Merge pull request 'Rewrite in Java' (#1) from java into master

Reviewed-on: #1
2025-06-08 16:10:20 +02:00
parent ff1d95edab bbb3448994
commit 6cda1f5bde
72 changed files with 2283 additions and 1335 deletions
--- a/.gitattributes
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+/gradlew text eol=lf
+*.bat text eol=crlf
+*.jar binary
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -7,13 +7,12 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4

-      - name: Setup Go
-        uses: actions/setup-go@v5
+      - name: Setup Java
+        uses: actions/setup-java@v4
        with:
-          go-version: '>=1.24'
+          distribution: 'temurin' # See 'Supported distributions' for available options
+          java-version: '21'
+          cache: 'gradle'

      - name: Build
-        run: go build .
-
-      - name: Test
-        run: go test . -v
+        run: ./gradlew build --no-daemon
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,41 @@
-*.db3
-*.db3-*
-*.db3.*
-*.iml
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
 .idea
-pcinv
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Old SQLite DB files ###
+*.db
+*.db3*
--- a/18
+++ b/18
@@ -1,13 +1,9 @@
-FROM golang:1.24.1-alpine3.21
-
+FROM eclipse-temurin:21-jdk-alpine AS builder
 WORKDIR /app
-COPY go.mod go.sum ./
-RUN go mod download
+COPY . /app
+RUN ./gradlew jar --no-daemon

-COPY migrations ./migrations
-COPY static ./static
-COPY templates ./templates
-COPY *.go ./
-RUN go build -o /pcinv
-
-CMD ["/pcinv"]
+FROM eclipse-temurin:21-alpine
+COPY --from=builder /app/build/libs/pcinv-0.0.1-SNAPSHOT.jar ./
+ENTRYPOINT ["java", "-jar", "pcinv-0.0.1-SNAPSHOT.jar"]
+EXPOSE 8088/tcp
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -0,0 +1,42 @@
+plugins {
+    java
+    id("org.springframework.boot") version "3.5.0"
+    id("io.spring.dependency-management") version "1.1.7"
+}
+
+group = "be.seeseepuff"
+version = "0.0.1-SNAPSHOT"
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
+configurations {
+    compileOnly {
+        extendsFrom(configurations.annotationProcessor.get())
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation("org.springframework.boot:spring-boot-starter-data-jpa")
+    implementation("org.springframework.boot:spring-boot-starter-thymeleaf")
+    implementation("org.springframework.boot:spring-boot-starter-web")
+    implementation("org.springframework.boot:spring-boot-starter-actuator")
+    compileOnly("org.projectlombok:lombok")
+    developmentOnly("org.springframework.boot:spring-boot-devtools")
+    runtimeOnly("org.postgresql:postgresql")
+    annotationProcessor("org.springframework.boot:spring-boot-configuration-processor")
+    annotationProcessor("org.projectlombok:lombok")
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+}
+
+tasks.withType<Test> {
+    useJUnitPlatform()
+}
--- a/data.go
+++ b/data.go
@@ -1,124 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"gitea.seeseepuff.be/seeseemelk/mysqlite"
-)
-
-func (a *App) getAllTypes(column, table string) ([]string, error) {
-	var types []string
-	var err error
-	for row := range a.db.Query(fmt.Sprintf("SELECT %s FROM %s GROUP BY %s ORDER BY %s ASC", column, table, column, column)).Range(&err) {
-		var name string
-		err := row.Scan(&name)
-		if err != nil {
-			return nil, err
-		}
-		types = append(types, name)
-	}
-	return types, err
-}
-
-func (a *App) GetAllBrands() ([]string, error) {
-	return a.getAllTypes("brand", "assets")
-}
-
-func (a *App) GetAllRamTypes() ([]string, error) {
-	return a.getAllTypes("type", "info_ram")
-}
-
-func (a *App) GetAllHddTypes() ([]string, error) {
-	return a.getAllTypes("type", "info_hdd")
-}
-
-func (a *App) GetAllHddFormFactors() ([]string, error) {
-	return a.getAllTypes("form_factor", "info_hdd")
-}
-
-func (a *App) GetAllHddConnections() ([]string, error) {
-	return a.getAllTypes("connection", "info_hdd")
-}
-
-func (a *App) GetAllHddSpeeds() ([]string, error) {
-	return a.getAllTypes("rpm", "info_hdd")
-}
-
-func (a *App) GetAllGroups(vm *CreateDeviceVM) error {
-	var err error
-	vm.AssetBrands, err = a.GetAllBrands()
-	if err != nil {
-		return err
-	}
-
-	vm.RamTypes, err = a.GetAllRamTypes()
-	if err != nil {
-		return err
-	}
-
-	vm.HddTypes, err = a.GetAllHddTypes()
-	if err != nil {
-		return err
-	}
-
-	vm.HddFormFactors, err = a.GetAllHddFormFactors()
-	if err != nil {
-		return err
-	}
-
-	vm.HddFormFactors, err = a.GetAllHddConnections()
-	if err != nil {
-		return err
-	}
-
-	vm.HddRpms, err = a.GetAllHddSpeeds()
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-func (a *App) GetAllTypes() ([]string, error) {
-	var types []string
-	var err error
-	for row := range a.db.Query("SELECT type FROM assets GROUP BY type ORDER BY type ASC").Range(&err) {
-		var name string
-		err := row.Scan(&name)
-		if err != nil {
-			return nil, err
-		}
-		types = append(types, name)
-	}
-	return types, err
-}
-
-func (a *App) GetAssetCount() (int, error) {
-	var count int
-	err := a.db.Query("SELECT COUNT(*) FROM assets").ScanSingle(&count)
-	return count, err
-}
-
-func (a *App) GetBrandCount() (int, error) {
-	var count int
-	err := a.db.Query("SELECT COUNT(DISTINCT brand) FROM assets").ScanSingle(&count)
-	return count, err
-}
-
-func (a *App) GetTotalRamCapacity() (int, error) {
-	var capacity int
-	err := a.db.Query("SELECT SUM(capacity) FROM info_ram").ScanSingle(&capacity)
-	return capacity, err
-}
-
-func (a *App) DeleteAsset(tx *mysqlite.Tx, qr int) error {
-	err := tx.Query("DELETE FROM assets WHERE qr=?").Bind(qr).Exec()
-	if err != nil {
-		return err
-	}
-
-	err = tx.Query("DELETE FROM info_ram WHERE asset=?").Bind(qr).Exec()
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -0,0 +1,9 @@
+services:
+  database:
+    image: postgres:latest
+    environment:
+      POSTGRES_USER: pcinv
+      POSTGRES_PASSWORD: pcinv
+      POSTGRES_DB: pcinv
+    ports:
+      - "5432:5432"
--- a/go.mod
+++ b/go.mod
@@ -1,47 +0,0 @@
-module pcinv
-
-go 1.24
-
-toolchain go1.24.1
-
-require (
-	gitea.seeseepuff.be/seeseemelk/mysqlite v0.9.0
-	github.com/gin-gonic/gin v1.10.0
-)
-
-require (
-	github.com/bytedance/sonic v1.13.1 // indirect
-	github.com/bytedance/sonic/loader v0.2.4 // indirect
-	github.com/cloudwego/base64x v0.1.5 // indirect
-	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
-	github.com/gin-contrib/sse v1.0.0 // indirect
-	github.com/go-playground/locales v0.14.1 // indirect
-	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.25.0 // indirect
-	github.com/goccy/go-json v0.10.5 // indirect
-	github.com/google/uuid v1.6.0 // indirect
-	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.10 // indirect
-	github.com/leodido/go-urn v1.4.0 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/ncruces/go-strftime v0.1.9 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
-	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
-	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.2.12 // indirect
-	golang.org/x/arch v0.15.0 // indirect
-	golang.org/x/crypto v0.36.0 // indirect
-	golang.org/x/net v0.37.0 // indirect
-	golang.org/x/sys v0.31.0 // indirect
-	golang.org/x/text v0.23.0 // indirect
-	google.golang.org/protobuf v1.36.5 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
-	modernc.org/libc v1.55.3 // indirect
-	modernc.org/mathutil v1.6.0 // indirect
-	modernc.org/memory v1.8.0 // indirect
-	modernc.org/sqlite v1.33.1 // indirect
-	zombiezen.com/go/sqlite v1.4.0 // indirect
-)
--- a/go.sum
+++ b/go.sum
@@ -1,126 +0,0 @@
-gitea.seeseepuff.be/seeseemelk/mysqlite v0.9.0 h1:GaU2DSrgDfZEqST3HdnNgfKSI4sNXvMm8SSfeMvBxA4=
-gitea.seeseepuff.be/seeseemelk/mysqlite v0.9.0/go.mod h1:cgswydOxJjMlNwfcBIXnKjr47LwXnMT9BInkiHb0tXE=
-github.com/bytedance/sonic v1.13.1 h1:Jyd5CIvdFnkOWuKXr+wm4Nyk2h0yAFsr8ucJgEasO3g=
-github.com/bytedance/sonic v1.13.1/go.mod h1:o68xyaF9u2gvVBuGHPlUVCy+ZfmNNO5ETf1+KgkJhz4=
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-github.com/bytedance/sonic/loader v0.2.4 h1:ZWCw4stuXUsn1/+zQDqeE7JKP+QO47tz7QCNan80NzY=
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-github.com/cloudwego/base64x v0.1.5 h1:XPciSp1xaq2VCSt6lF0phncD4koWyULpl5bUxbfCyP4=
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-github.com/gin-contrib/sse v1.0.0/go.mod h1:zNuFdwarAygJBht0NTKiSi3jRf6RbqeILZ9Sp6Slhe0=
-github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=
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-github.com/goccy/go-json v0.10.5/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
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-github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
-github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
-github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
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-golang.org/x/arch v0.15.0/go.mod h1:JmwW7aLIoRUKgaTzhkiEFxvcEiQGyOg9BMonBJUS7EE=
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-golang.org/x/crypto v0.36.0/go.mod h1:Y4J0ReaxCR1IMaabaSMugxJES1EpwhBHhv2bDHklZvc=
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-golang.org/x/net v0.37.0/go.mod h1:ivrbrMbzFq5J41QOQh0siUuly180yBYtLp+CKbEaFx8=
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-golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
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-golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4=
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-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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-modernc.org/cc/v4 v4.21.4 h1:3Be/Rdo1fpr8GrQ7IVw9OHtplU4gWbb+wNgeoBMmGLQ=
-modernc.org/cc/v4 v4.21.4/go.mod h1:HM7VJTZbUCR3rV8EYBi9wxnJ0ZBRiGE5OeGXNA0IsLQ=
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-modernc.org/fileutil v1.3.0/go.mod h1:XatxS8fZi3pS8/hKG2GH/ArUogfxjpEKs3Ku3aK4JyQ=
-modernc.org/gc/v2 v2.4.1 h1:9cNzOqPyMJBvrUipmynX0ZohMhcxPtMccYgGOJdOiBw=
-modernc.org/gc/v2 v2.4.1/go.mod h1:wzN5dK1AzVGoH6XOzc3YZ+ey/jPgYHLuVckd62P0GYU=
-modernc.org/libc v1.55.3 h1:AzcW1mhlPNrRtjS5sS+eW2ISCgSOLLNyFzRh/V3Qj/U=
-modernc.org/libc v1.55.3/go.mod h1:qFXepLhz+JjFThQ4kzwzOjA/y/artDeg+pcYnY+Q83w=
-modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
-modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
-modernc.org/memory v1.8.0 h1:IqGTL6eFMaDZZhEWwcREgeMXYwmW83LYW8cROZYkg+E=
-modernc.org/memory v1.8.0/go.mod h1:XPZ936zp5OMKGWPqbD3JShgd/ZoQ7899TUuQqxY+peU=
-modernc.org/opt v0.1.3 h1:3XOZf2yznlhC+ibLltsDGzABUGVx8J6pnFMS3E4dcq4=
-modernc.org/opt v0.1.3/go.mod h1:WdSiB5evDcignE70guQKxYUl14mgWtbClRi5wmkkTX0=
-modernc.org/sortutil v1.2.0 h1:jQiD3PfS2REGJNzNCMMaLSp/wdMNieTbKX920Cqdgqc=
-modernc.org/sortutil v1.2.0/go.mod h1:TKU2s7kJMf1AE84OoiGppNHJwvB753OYfNl2WRb++Ss=
-modernc.org/sqlite v1.33.1 h1:trb6Z3YYoeM9eDL1O8do81kP+0ejv+YzgyFo+Gwy0nM=
-modernc.org/sqlite v1.33.1/go.mod h1:pXV2xHxhzXZsgT/RtTFAPY6JJDEvOTcTdwADQCCWD4k=
-modernc.org/strutil v1.2.0 h1:agBi9dp1I+eOnxXeiZawM8F4LawKv4NzGWSaLfyeNZA=
-modernc.org/strutil v1.2.0/go.mod h1:/mdcBmfOibveCTBxUl5B5l6W+TTH1FXPLHZE6bTosX0=
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-modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
-nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
-zombiezen.com/go/sqlite v1.4.0 h1:N1s3RIljwtp4541Y8rM880qgGIgq3fTD2yks1xftnKU=
-zombiezen.com/go/sqlite v1.4.0/go.mod h1:0w9F1DN9IZj9AcLS9YDKMboubCACkwYCGkzoy3eG5ik=
--- a/gradle/wrapper/gradle-wrapper.jar
+++ b/gradle/wrapper/gradle-wrapper.jar
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/251
+++ b/251
@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/main.go
+++ b/main.go
@@ -1,94 +0,0 @@
-package main
-
-import (
-	"embed"
-	"html/template"
-	"log"
-	"net/http"
-	"os"
-
-	"gitea.seeseepuff.be/seeseemelk/mysqlite"
-	"github.com/gin-gonic/gin"
-)
-
-//go:embed migrations/*.sql
-var migrations embed.FS
-
-//go:embed templates/*.gohtml
-var templateFS embed.FS
-
-func main() {
-	log.Println("Starting...")
-
-	// Get database path from environment variable or use default
-	dbPath := os.Getenv("PCINV_DB")
-	if dbPath == "" {
-		dbPath = "pcinv.db3"
-	}
-
-	db, err := mysqlite.OpenDb(dbPath)
-	if err != nil {
-		log.Fatalf("error opening db: %v", err)
-	}
-	defer db.MustClose()
-
-	err = db.MigrateDb(migrations, "migrations")
-	if err != nil {
-		log.Fatalf("error migrating db: %v", err)
-	}
-
-	app := &App{
-		db: db,
-	}
-
-	templates, err := template.New("undefined.gohtml").
-		Funcs(template.FuncMap{
-			"statusText":              http.StatusText,
-			"createDeviceLink":        createDeviceLink,
-			"formatMemorySize":        formatMemorySize,
-			"formatMemoryPlainSize":   formatMemoryPlainSize,
-			"formatType":              formatType,
-			"isRamType":               isRamType,
-			"createSelectMenu":        createSelectMenu,
-			"createSelectMenuDefault": createSelectMenuDefault,
-		}).
-		ParseFS(templateFS, "templates/*.gohtml")
-
-	if err != nil {
-		log.Fatalf("error parsing templates: %v", err)
-	}
-
-	gin.DebugPrintFunc = log.Printf
-	gin.SetMode(gin.ReleaseMode)
-	r := gin.Default()
-	r.SetHTMLTemplate(templates)
-	r.StaticFS("/static", staticFiles)
-	r.Use(errorHandler)
-	r.GET("/", app.getIndex)
-	r.GET("/device", app.getDevice)
-	r.GET("/create", app.getCreateDevice)
-	r.POST("/create", app.postCreateDevice)
-	r.GET("/browse", app.getBrowse)
-	r.GET("/delete", app.getDelete)
-	r.POST("/delete", app.postDelete)
-	err = r.Run()
-	if err != nil {
-		log.Fatalf("error serving website: %v", err)
-	}
-}
-
-type ErrorVM struct {
-	Errors     []*gin.Error
-	StatusCode int
-}
-
-func errorHandler(c *gin.Context) {
-	c.Next()
-	if len(c.Errors) != 0 {
-		vm := ErrorVM{
-			Errors:     c.Errors,
-			StatusCode: c.Writer.Status(),
-		}
-		c.HTML(vm.StatusCode, "errors", vm)
-	}
-}
--- a/migrations/1_initial.sql
+++ b/migrations/1_initial.sql
@@ -1,19 +0,0 @@
-create table assets (
-    qr integer unique,
-    type text not null,
-    brand text,
-    name text,
-    description text
-) strict;
-
-create table worklog (
-    asset integer not null,
-    timestamp integer not null,
-    action text not null
-) strict;
-
-create table info_ram (
-    asset integer not null unique,
-    capacity integer,
-    type text
-) strict;
--- a/migrations/2_add_harddrives.sql
+++ b/migrations/2_add_harddrives.sql
@@ -1,8 +0,0 @@
-create table info_hdd (
-    asset integer not null unique,
-    capacity integer,
-    type text,
-    form_factor text,
-    connection text,
-    rpm integer
-);
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -0,0 +1 @@
+rootProject.name = "pcinv"
--- a/src/main/java/be/seeseepuff/pcinv/PcinvApplication.java
+++ b/src/main/java/be/seeseepuff/pcinv/PcinvApplication.java
@@ -0,0 +1,13 @@
+package be.seeseepuff.pcinv;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class PcinvApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(PcinvApplication.class, args);
+    }
+
+}
--- a/src/main/java/be/seeseepuff/pcinv/controllers/StartupController.java
+++ b/src/main/java/be/seeseepuff/pcinv/controllers/StartupController.java
@@ -0,0 +1,23 @@
+package be.seeseepuff.pcinv.controllers;
+
+import be.seeseepuff.pcinv.services.AssetService;
+import jakarta.annotation.PostConstruct;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@RequiredArgsConstructor
+@Service
+public class StartupController {
+    private final AssetService assetService;
+
+    @PostConstruct
+    public void init() {
+        var descriptors = assetService.getAssetDescriptors();
+        log.info("Asset descriptors loaded:\n{}", descriptors);
+
+        var assets = assetService.countAssets();
+        log.info("The repository contains {} assets.", assets);
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/controllers/WebController.java
+++ b/src/main/java/be/seeseepuff/pcinv/controllers/WebController.java
@@ -0,0 +1,227 @@
+package be.seeseepuff.pcinv.controllers;
+
+import be.seeseepuff.pcinv.services.AssetService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.repository.query.Param;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+
+import java.util.HashMap;
+
+/**
+ * Controller for handling web requests related to assets.
+ * Provides endpoints for viewing and creating assets.
+ */
+@RequiredArgsConstructor
+@Controller
+public class WebController {
+    /// The name of the model attribute that holds the global asset descriptors.
+    private static final String DESCRIPTORS = "descriptors";
+    /// The name of the model attribute that holds the asset descriptor for the current view.
+    private static final String DESCRIPTOR = "descriptor";
+    /// The name of the model attribute that holds the list of assets.
+    private static final String ASSETS = "assets";
+    /// The name of the model attribute that holds the asset being viewed or edited.
+    private static final String ASSET = "asset";
+    /// The name of the model attribute that holds a list of all properties of all descriptors.
+    private static final String PROPERTIES = "properties";
+    /// The name of the model attribute that holds the action to be performed.
+    private static final String ACTION = "action";
+    /// The name of the model attribute that holds the current time in milliseconds.
+    private static final String TIME = "time";
+    /// The name of the model attribute that holds the input lists for creating or editing assets.
+    private static final String INPUT_LIST = "inputLists";
+
+    private final AssetService assetService;
+
+    /**
+     * Handles the root URL and returns the index page with asset descriptors and asset count.
+     */
+    @GetMapping("/")
+    public String index(Model model) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        model.addAttribute(DESCRIPTORS, assetService.getAssetDescriptors());
+        model.addAttribute("asset_count", assetService.countAssets());
+        return "index";
+    }
+
+    /**
+     * Shows a view where a user can select the type of asset to browse.
+     */
+    @GetMapping("/browse")
+    public String browse(Model model) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        model.addAttribute(DESCRIPTORS, assetService.getAssetDescriptors());
+        return "browse";
+    }
+
+    /**
+     * Handles the browsing of assets by type.
+     * Displays the asset descriptor tree and the specific descriptor for the given type.
+     *
+     * @param model The model to add attributes to.
+     * @param type  The type of asset to browse.
+     * @return The view name for browsing assets by type.
+     */
+    @GetMapping("/browse/{type}")
+    public String browseType(Model model, @PathVariable String type) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        var tree = assetService.getAssetDescriptorTree(type);
+        model.addAttribute(DESCRIPTOR, assetService.getAssetDescriptor(type));
+        model.addAttribute(DESCRIPTORS, tree);
+        model.addAttribute(PROPERTIES, tree.stream().flatMap(d -> d.getProperties().stream()).toList());
+        model.addAttribute(ASSETS, assetService.getAssetsByType(type));
+        return "browse_type";
+    }
+
+    /**
+     * Handles the view of an asset by its QR code.
+     * If the asset does not exist, it redirects to the index page.
+     *
+     * @param qr    The QR code of the asset to view.
+     */
+    @GetMapping("/view/{qr}")
+    public String view(Model model, @PathVariable long qr) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        model.addAttribute(ACTION, "view");
+        return renderView(model, qr);
+    }
+
+    /**
+     * Show a page asking if the user wants to delete an asset.
+     *
+     * @param qr The QR code of the asset to delete.
+     */
+    @GetMapping("/delete/{qr}")
+    public String delete(Model model, @PathVariable long qr, @Param("confirm") boolean confirm) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        model.addAttribute(ACTION, "delete");
+        if (confirm) {
+            var asset = assetService.getAssetByQr(qr);
+            if (asset == null) {
+                return "redirect:/";
+            }
+            var type = asset.getAsset().getType();
+            assetService.deleteAsset(qr);
+            return "redirect:/browse/" + type;
+        }
+        return renderView(model, qr);
+    }
+
+    /**
+     * Renders the view for an asset based on its QR code.
+     * If the asset does not exist, it redirects to the index page.
+     *
+     * @param model The model to add attributes to.
+     * @param qr    The QR code of the asset to view.
+     * @return The view name for viewing the asset.
+     */
+    private String renderView(Model model, long qr) {
+        var asset = assetService.getAssetByQr(qr);
+        if (asset == null) {
+            return "redirect:/";
+        }
+        model.addAttribute(ASSET, asset);
+        model.addAttribute(DESCRIPTORS, assetService.getAssetDescriptorTree(asset.getAsset().getType()));
+        model.addAttribute(DESCRIPTOR, assetService.getAssetDescriptor(asset.getAsset().getType()));
+        return "view";
+    }
+
+    @GetMapping("/search")
+    public String search(@Param("qr") long qr) {
+        return "redirect:/view/" + qr;
+    }
+
+    /**
+     * Shows a view where the user can create the type of asset to create.
+     */
+    @GetMapping("/create")
+    public String create(Model model) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        model.addAttribute(DESCRIPTORS, assetService.getAssetDescriptors());
+        return "create_select";
+    }
+
+    /**
+     * Shows a view where the user can create a specific type of asset.
+     *
+     * @param type  The type of asset to create.
+     */
+    @GetMapping("/create/{type}")
+    public String createType(Model model, @PathVariable String type) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        model.addAttribute(ACTION, "create");
+        model.addAttribute(DESCRIPTORS, assetService.getAssetDescriptorTree(type));
+        model.addAttribute(DESCRIPTOR, assetService.getAssetDescriptor(type));
+        model.addAttribute(INPUT_LIST, assetService.getInputList(type));
+        return "create_asset";
+    }
+
+    /**
+     * Shows a view where the user can edit an existing asset.
+     *
+     * @param qr The QR code of the asset to edit.
+     */
+    @GetMapping("/edit/{qr}")
+    public String edit(Model model, @PathVariable long qr) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        var asset = assetService.getAssetByQr(qr);
+        if (asset == null) {
+            throw new RuntimeException("Asset not found");
+        }
+        String assetType = asset.getAsset().getType();
+        model.addAttribute(ACTION, "edit");
+        model.addAttribute(ASSET, asset);
+        model.addAttribute(DESCRIPTORS, assetService.getAssetDescriptorTree(assetType));
+        model.addAttribute(DESCRIPTOR, assetService.getAssetDescriptor(assetType));
+        model.addAttribute(INPUT_LIST, assetService.getInputList(assetType));
+        return "create_asset";
+    }
+
+    /**
+     * Actually edits an asset based on the form data submitted.
+     *
+     * @param qr The QR code of the asset to edit.
+     */
+    @PostMapping("/edit/{qr}")
+    public String editPost(Model model, @PathVariable long qr, @RequestBody MultiValueMap<String, String> formData) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        var formMap = new HashMap<String, String>();
+        formData.forEach((key, values) -> {
+            if (!values.isEmpty()) {
+                formMap.put(key, values.getFirst());
+            }
+        });
+        var asset = assetService.editAsset(qr, formMap);
+        return "redirect:/view/" + asset.getQr();
+    }
+
+    /**
+     * Handles the form submission for creating an asset.
+     *
+     * @param model The model to add attributes to.
+     * @param type  The type of asset to create.
+     * @return The view name for creating the asset.
+     */
+    @PostMapping(
+            value = "/create/{type}",
+            consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE
+    )
+    public String createTypePost(Model model, @PathVariable String type, @RequestBody MultiValueMap<String, String> formData) {
+        model.addAttribute(TIME, System.currentTimeMillis());
+        var formMap = new HashMap<String, String>();
+        formData.forEach((key, values) -> {
+            if (!values.isEmpty()) {
+                formMap.put(key, values.getFirst());
+            }
+        });
+        var asset = assetService.createAsset(type, formMap);
+        return "redirect:/view/" + asset.getQr();
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/AssetDescriptor.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/AssetDescriptor.java
@@ -0,0 +1,113 @@
+package be.seeseepuff.pcinv.meta;
+
+import be.seeseepuff.pcinv.models.Asset;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Objects;
+import java.util.function.Supplier;
+
+/**
+ * Describes the properties of an asset
+ */
+@Getter
+@Builder
+public class AssetDescriptor {
+    /// The type of property, e.g.: ram, asset, etc...
+    private final String type;
+
+    /// The displayable name of the property, e.g.: "Random Access Memory"
+    private final String displayName;
+
+    /// The plural name of the property, e.g.: "Random Access Memories"
+    private final String pluralName;
+
+    /// Whether the asset is visible in the user interface.
+    private final boolean visible;
+
+    /// The properties of the asset, such as "brand", "model", etc.
+    @lombok.Singular
+    private Collection<AssetProperty> properties;
+
+    /// A supplier that can be used to create a new instance of the asset type described by this descriptor.
+    private Supplier<Asset> instanceProducer;
+
+    /**
+     * Loads the asset properties from a given asset class.
+     *
+     * @param assetType The class of the asset to load properties for.
+     * @return An AssetProperties instance containing the loaded properties.
+     */
+    public static AssetDescriptor loadFrom(Class<?> assetType) {
+        var assetInfo = assetType.getAnnotation(AssetInfo.class);
+        Objects.requireNonNull(assetInfo, "Asset class must be annotated with @AssetInfo");
+        var builder = AssetDescriptor.builder()
+                .type(assetInfo.type())
+                .displayName(assetInfo.displayName())
+                .pluralName(assetInfo.pluralName())
+                .visible(assetInfo.isVisible())
+                .properties(Arrays.stream(assetType.getDeclaredFields())
+                        .map(field -> AssetProperty.loadFrom(field, assetInfo.type()))
+                        .filter(Objects::nonNull)
+                        .toList());
+        if (Asset.class.isAssignableFrom(assetType)) {
+            builder.instanceProducer(() -> {
+                try {
+                    return (Asset) assetType.getConstructor().newInstance();
+                } catch (NoSuchMethodException | InstantiationException | IllegalAccessException |
+                         InvocationTargetException e) {
+                    throw new RuntimeException(e);
+                }
+            });
+        }
+        return builder.build();
+    }
+
+    /**
+     * Returns a string representation of the asset properties with the specified indentation.
+     *
+     * @param indent The indentation to use for formatting.
+     * @return A formatted string representation of the asset properties.
+     */
+    public String toString(String indent) {
+        var builder = new StringBuilder();
+        builder.append(indent).append("AssetProperties {\n");
+        builder.append(indent).append("    type='").append(type).append("',\n");
+        builder.append(indent).append("    displayName='").append(displayName).append("',\n");
+        if (!visible) {
+            builder.append(indent).append("    hidden").append(",\n");
+        }
+        builder.append(indent).append("    properties=[\n");
+        for (var property : properties) {
+            builder.append(indent).append("        ").append(property.toString()).append("\n");
+        }
+        builder.append(indent).append("    ]\n");
+        builder.append(indent).append('}');
+        return builder.toString();
+    }
+
+    /**
+     * Returns a string representation of the asset property in the format "type-propertyName".
+     *
+     * @param property The asset property to format.
+     * @return A string representation of the asset property.
+     */
+    public String asString(AssetProperty property) {
+        return String.format("%s-%s", type, property.getName());
+    }
+
+    /**
+     * Creates a new instance of the asset type described by this descriptor.
+     *
+     * @return A new instance of the asset type.
+     */
+    public Asset newInstance() {
+        if (instanceProducer == null) {
+            throw new IllegalStateException("Instance producer is not set for asset descriptor: " + type);
+        }
+        return instanceProducer.get();
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/AssetDescriptors.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/AssetDescriptors.java
@@ -0,0 +1,35 @@
+package be.seeseepuff.pcinv.meta;
+
+import lombok.Getter;
+
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.TreeSet;
+
+/**
+ * Holds the descriptors for all possible asset types.
+ */
+@Getter
+public class AssetDescriptors {
+    /// A collection of all types of assets.
+    private final Collection<AssetDescriptor> assets = new TreeSet<>(Comparator.comparing(AssetDescriptor::getDisplayName));
+
+    /**
+     * Loads the asset properties from a given asset type.
+     *
+     * @param assetType The type of the asset to load properties for.
+     */
+    public void loadFrom(Class<?> assetType) {
+        var property = AssetDescriptor.loadFrom(assetType);
+        assets.add(property);
+    }
+
+    @Override
+    public String toString() {
+        var builder = new StringBuilder();
+        builder.append("AssetDescriptors [\n");
+        assets.forEach(assetDescriptor -> builder.append(assetDescriptor.toString("    ")).append('\n'));
+        builder.append("]");
+        return builder.toString();
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/AssetEnum.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/AssetEnum.java
@@ -0,0 +1,15 @@
+package be.seeseepuff.pcinv.meta;
+
+/**
+ * An interface that should be implemented by all asset enums.
+ */
+public interface AssetEnum {
+    /// Get the internal value of the enum.
+    String getValue();
+
+    /// Get the display name of the enum.
+    String getDisplayName();
+
+    /// Get the default value of the enum that should be selected when the user creates a device.
+    boolean isDefaultValue();
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/AssetInfo.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/AssetInfo.java
@@ -0,0 +1,41 @@
+package be.seeseepuff.pcinv.meta;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Provides metadata about an asset type itself.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface AssetInfo {
+    /**
+     * The displayable name of the asset type.
+     *
+     * @return the display name of the asset type
+     */
+    String displayName();
+
+    /**
+     * The plural name of the asset type, used for display purposes.
+     *
+     * @return the plural name of the asset type
+     */
+    String pluralName();
+
+    /**
+     * The type of the asset, which can be a string or an integer.
+     *
+     * @return the type of the asset
+     */
+    String type();
+
+    /**
+     * Indicates whether the asset type should be visible in the UI.
+     *
+     * @return true if the asset type is visible, false otherwise
+     */
+    boolean isVisible() default true;
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/AssetOption.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/AssetOption.java
@@ -0,0 +1,20 @@
+package be.seeseepuff.pcinv.meta;
+
+import lombok.Builder;
+import lombok.Getter;
+
+/**
+ * Represents an option for an asset property enum.
+ */
+@Getter
+@Builder
+public class AssetOption {
+    /// The internal value of the option.
+    private final String value;
+    /// The display name of the option.
+    private final String displayName;
+    /// The actual enum value associated with this option.
+    private final Object enumConstant;
+    /// Whether this option is the default value for the property.
+    private final boolean isDefaultValue;
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/AssetProperty.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/AssetProperty.java
@@ -0,0 +1,222 @@
+package be.seeseepuff.pcinv.meta;
+
+import be.seeseepuff.pcinv.models.Asset;
+import be.seeseepuff.pcinv.models.AssetCondition;
+import be.seeseepuff.pcinv.models.GenericAsset;
+import jakarta.annotation.Nonnull;
+import jakarta.annotation.Nullable;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.Singular;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.function.BiConsumer;
+import java.util.function.Function;
+
+/**
+ * Represents a property of an asset, such as its name or type.
+ * This class is used to define the metadata for assets in the system.
+ */
+@Getter
+@Builder
+public class AssetProperty {
+    /// The name of the property, e.g., "brand", "model", etc.
+    private final String name;
+    /// The name of the property as it should be displayed, e.g., "Brand", "Model", etc.
+    private final String displayName;
+    /// The type of the property, which can be a string or an integer.
+    private final Type type;
+    /// Whether the property is required for the asset.
+    private final boolean required;
+    /// A set of options for the property, used for enum types.
+    @Singular
+    private final List<AssetOption> options;
+    /// Whether the capacity should be displayed in SI units (e.g., GB, MB).
+    private final boolean capacityAsSI;
+    /// Whether the capacity should be displayed in IEC units (e.g., GiB, MiB).
+    private final boolean capacityAsIEC;
+    /// A setter function that can be used to set the value of the property on an asset.
+    private final BiConsumer<Object, Object> setter;
+    /// A getter function that can be used to get the value of the property from an asset.
+    private final Function<Object, Object> getter;
+    /// Whether the property is an input list.
+    private final boolean inputList;
+    /// Whether the property should be hidden in the overview.
+    private final boolean hideInOverview;
+    /// A description of the property, if any.
+    private final String description;
+
+    /**
+     * Enum representing the possible types of asset properties.
+     */
+    @AllArgsConstructor
+    public enum Type {
+        STRING(false),
+        INTEGER(false),
+        CAPACITY(false),
+        CONDITION(true),
+        ;
+        /// Set to `true` if the type is an enum, `false` otherwise.
+        public final boolean isEnum;
+
+        /**
+         * Returns the name of the type, or "enum" if it is an enum type.
+         *
+         * @return The name of the type or "enum" if it is an enum.
+         */
+        public String nameOrEnum() {
+            return isEnum ? "enum" : name();
+        }
+    }
+
+    /**
+     * Loads an AssetProperty from a given field.
+     *
+     * @param property The field representing the property.
+     * @return An AssetProperty instance with the name, display name, and type determined from the field.
+     */
+    @Nullable
+    public static AssetProperty loadFrom(Field property, @Nonnull  String assetType) {
+        var annotation = property.getAnnotation(Property.class);
+        if (annotation == null) {
+            return null;
+        }
+
+        var type = determineType(property);
+        var builder = AssetProperty.builder()
+                .name(property.getName())
+                .displayName(annotation.value())
+                .type(type)
+                .required(annotation.required())
+                .inputList(property.isAnnotationPresent(InputList.class))
+                .hideInOverview(property.isAnnotationPresent(HideInOverview.class))
+                .description(property.isAnnotationPresent(Description.class) ? property.getAnnotation(Description.class).value() : "")
+                .setter((obj, value) -> {
+                    try {
+                        property.setAccessible(true);
+                        property.set(obj, value);
+                    } catch (IllegalAccessException e) {
+                        throw new RuntimeException(e);
+                    }
+                })
+                .getter(obj -> {
+                    try {
+                        if (assetType.equals(GenericAsset.TYPE) && obj instanceof Asset asset) {
+                            obj = asset.getAsset();
+                        }
+                        property.setAccessible(true);
+                        return property.get(obj);
+                    } catch (IllegalAccessException e) {
+                        throw new RuntimeException(e);
+                    }
+                });
+
+        if (type.isEnum) {
+            var enumConstants = property.getType().getEnumConstants();
+            for (var enumConstant : enumConstants) {
+                if (!(enumConstant instanceof AssetEnum assetEnum)) {
+                    throw new IllegalArgumentException("Property " + enumConstant.getClass().getName() + " does not implement AssetEnum");
+                }
+                var option = AssetOption.builder()
+                        .value(assetEnum.getValue())
+                        .displayName(assetEnum.getDisplayName())
+                        .isDefaultValue(assetEnum.isDefaultValue())
+                        .enumConstant(enumConstant)
+                        .build();
+                builder.option(option);
+            }
+        }
+        if (type == Type.CAPACITY) {
+            var capacityAnnotation = property.getAnnotation(Capacity.class);
+            builder.capacityAsSI(capacityAnnotation.si());
+            builder.capacityAsIEC(capacityAnnotation.iec());
+        }
+        return builder.build();
+    }
+
+    /**
+     * Determines the type of the property based on its field type.
+     *
+     * @param property The field representing the property.
+     * @return The type of the property.
+     * @throws IllegalArgumentException if the property type is unsupported.
+     */
+    private static Type determineType(Field property) {
+        if (property.getType() == String.class) {
+            return Type.STRING;
+        } else if (property.isAnnotationPresent(Capacity.class)) {
+            return Type.CAPACITY;
+        } else if (property.getType() == Integer.class || property.getType() == int.class || property.getType() == Long.class || property.getType() == long.class) {
+            return Type.INTEGER;
+        } else if (property.getType() == AssetCondition.class) {
+            return Type.CONDITION;
+        } else {
+            throw new IllegalArgumentException("Unsupported property type: " + property.getType());
+        }
+    }
+
+    /**
+     * Sets the value of the property on the given asset.
+     *
+     * @param asset The asset to set the property on.
+     * @param value The value to set for the property.
+     */
+    public void setValue(Object asset, Object value) {
+        if (value == null && required) {
+            throw new IllegalArgumentException("Property '" + name + "' is required but received null value.");
+        }
+        setter.accept(asset, value);
+    }
+
+    /**
+     * Gets the value of the property from the given asset.
+     *
+     * @param asset The asset to get the property value from.
+     * @return The value of the property.
+     */
+    @Nullable
+    public Object getValue(@Nullable Object asset) {
+        if (asset == null) {
+            return null;
+        }
+        return getter.apply(asset);
+    }
+
+    /**
+     * Renders the value of the property as a string.
+     *
+     * @return The rendered value as a string.
+     */
+    @Nullable
+    public String renderValue(@Nullable Object asset) {
+        if (asset == null) {
+            return null;
+        }
+        var value = getValue(asset);
+        if (value == null) {
+            return "Unknown";
+        } else if (type == Type.INTEGER || type == Type.STRING) {
+            return value.toString();
+        } else if (type == Type.CAPACITY) {
+            return String.format("%s bytes", value);
+        } else if (type.isEnum) {
+            if (value instanceof AssetEnum assetEnum) {
+                return assetEnum.getDisplayName();
+            }
+            throw new IllegalArgumentException("Expected value to be an instance of AssetEnum, but got: " + value.getClass().getName());
+        } else {
+            return value.toString();
+        }
+    }
+
+    @Override
+    public String toString() {
+        var enumOptions = "";
+        if (type.isEnum) {
+            enumOptions = " [" + String.join(", ", options.stream().map(AssetOption::getValue).toList()) + "]";
+        }
+        return String.format("%s:%s (%s)%s", name, type.name(), displayName, enumOptions);
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/Capacity.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/Capacity.java
@@ -0,0 +1,20 @@
+package be.seeseepuff.pcinv.meta;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation to mark a property descriptor as representing some sort of capacity.
+ * It is used to render the capacity in the UI as bytes, kilobytes, megabytes, etc.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface Capacity {
+    /// Set to `true` if the capacity should include SI units (e.g., 1 KB = 1000 bytes).
+    boolean si() default false;
+
+    /// Set to `true` if the capacity should be displayed in IEC units (e.g., 1 KiB = 1024 bytes).
+    boolean iec() default true;
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/Description.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/Description.java
@@ -0,0 +1,20 @@
+package be.seeseepuff.pcinv.meta;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Annotation to provide a description for an asset.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface Description {
+    /**
+     * The description of the asset.
+     *
+     * @return The description text.
+     */
+    String value() default "";
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/HideInOverview.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/HideInOverview.java
@@ -0,0 +1,14 @@
+package be.seeseepuff.pcinv.meta;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Indicates that the field should not be included in the overview of an asset.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface HideInOverview {
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/InputList.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/InputList.java
@@ -0,0 +1,15 @@
+package be.seeseepuff.pcinv.meta;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Indicates that any form for the given field should be rendered as a dropdown
+ * list with optional manual text input.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface InputList {
+}
--- a/src/main/java/be/seeseepuff/pcinv/meta/Property.java
+++ b/src/main/java/be/seeseepuff/pcinv/meta/Property.java
@@ -0,0 +1,27 @@
+package be.seeseepuff.pcinv.meta;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation to mark a property descriptor of an asset.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface Property {
+    /**
+     * The displayable name of the property.
+     *
+     * @return the display name of the property
+     */
+    String value();
+
+    /**
+     * Whether the property is required for the asset.
+     *
+     * @return true if the property is required, false otherwise
+     */
+    boolean required() default false;
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/Asset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/Asset.java
@@ -0,0 +1,13 @@
+package be.seeseepuff.pcinv.models;
+
+public interface Asset {
+    long getId();
+
+    GenericAsset getAsset();
+
+    default long getQr() {
+        return getAsset().getQr();
+    }
+
+    void setAsset(GenericAsset asset);
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/AssetCondition.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/AssetCondition.java
@@ -0,0 +1,32 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.AssetEnum;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+/**
+ * Represents the condition of an asset in the inventory system.
+ */
+@Getter
+@RequiredArgsConstructor
+public enum AssetCondition implements AssetEnum
+{
+	/// The asset is in perfect working order.
+	HEALTHY("healthy", "Healthy"),
+	///  The condition of the asset is unknown. E.g.: it is untested.
+	UNKNOWN("unknown", "Not known"),
+	/// The asset generally works, but has some known issues.
+	PARTIAL("partial", "Partially working"),
+	/// The asset is in need of repair, but is not completely broken.
+	REPAIR("repair", "Requires repairs"),
+	/// The asset is completely broken and cannot be used.
+	BORKED("borked", "Borked"),
+	;
+	private final String value;
+	private final String displayName;
+
+	@Override
+	public boolean isDefaultValue() {
+		return this == UNKNOWN;
+	}
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/ChassisAsset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/ChassisAsset.java
@@ -0,0 +1,53 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.AssetInfo;
+import be.seeseepuff.pcinv.meta.Description;
+import be.seeseepuff.pcinv.meta.HideInOverview;
+import be.seeseepuff.pcinv.meta.Property;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Entity
+@AssetInfo(
+		displayName = "Chassis",
+		pluralName = "Chassis",
+		type = "chassis"
+)
+@Table(name = "chassis_assets")
+public class ChassisAsset implements Asset
+{
+	@Id
+	@GeneratedValue
+	private long id;
+
+	/// The generic asset associated with this RAM.
+	@OneToOne(orphanRemoval = true)
+	private GenericAsset asset;
+
+	@Description("The number of 5.25\" drive bays in the chassis.")
+	@Property("5.25\" Bays")
+	@HideInOverview
+	private Long bay5_25Count;
+
+	@Description("The number of 3.5\" drive bays in the chassis.")
+	@Property("3.5\" Bays")
+	@HideInOverview
+	private Long bay3_5Count;
+
+	@Description("The number of internal 3.5\" drive bays in the chassis.")
+	@Property("Internal 3.5\" Bays")
+	@HideInOverview
+	private Long internalBay3_5Count;
+
+	@Description("The number of 2.5\" drive bays in the chassis.")
+	@Property("2.5\" Bays")
+	@HideInOverview
+	private Long bay2_5Count;
+
+	@Description("The number of expansion slots in the chassis.")
+	@Property("Expansion Slots")
+	private Long expansionSlotCount;
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/DisplayAdapterAsset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/DisplayAdapterAsset.java
@@ -0,0 +1,48 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.*;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Entity
+@AssetInfo(
+		displayName = "Display Adapter",
+		pluralName = "Display Adapters",
+		type = "gpu"
+)
+@Table(name = "gpu_assets")
+public class DisplayAdapterAsset implements Asset
+{
+	@Id
+	@GeneratedValue
+	private long id;
+
+	/// The generic asset associated with this RAM.
+	@OneToOne(orphanRemoval = true)
+	private GenericAsset asset;
+
+	@Property("VRAM Capacity")
+	@Capacity
+	private Long vramCapacity;
+
+	@Description("The type of interface. E.g.: AGP, PCIe, ISA-8, etc...")
+	@Property("Interface")
+	@HideInOverview
+	@InputList
+	private String interfaceType;
+
+	@Description("The highest version of DirectX supported by this display adapter.")
+	@Property("DirectX Version")
+	@HideInOverview
+	@InputList
+	private String directXVersion;
+
+	@Description("The highest version of OpenGL supported by this display adapter.")
+	@Property("OpenGL Version")
+	@HideInOverview
+	@InputList
+	private String openGLVersion;
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/GenericAsset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/GenericAsset.java
@@ -0,0 +1,68 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.*;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * Represents a generic asset in the inventory system.
+ */
+@Getter
+@Setter
+@Entity
+@AssetInfo(
+		displayName = "Asset",
+		pluralName = "Assets",
+		type = "asset",
+		isVisible = false
+)
+@Table(
+		name = "assets",
+		uniqueConstraints = @UniqueConstraint(columnNames = "qr")
+)
+public class GenericAsset
+{
+	public static final String TYPE = "asset";
+
+	@Id @GeneratedValue
+	private long id;
+
+	/// The QR code attached to the asset, used for identification.
+	@Property(value = "QR", required = true)
+	@Description("The QR code attached to the asset, used for identification.")
+	private long qr;
+
+	/// The type of asset
+	private String type;
+
+	@Property("Brand")
+	@InputList
+	private String brand;
+
+	@Property("Model")
+	private String model;
+
+	@Property("Serial Number")
+	@HideInOverview
+	private String serialNumber;
+
+	@Property("Description")
+	@HideInOverview
+	private String description;
+
+	@Property("Condition")
+	private AssetCondition condition;
+
+	@Property("Manufacture Date")
+	@HideInOverview
+	private String manufactureDate;
+
+	@Property("Purchase Date")
+	@HideInOverview
+	private String purchaseDate;
+
+	@Property("Warranty Expiration Date")
+	@HideInOverview
+	private String warrantyExpirationDate;
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/HddAsset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/HddAsset.java
@@ -0,0 +1,57 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.*;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * Represents a hard drive or similar device.
+ */
+@Getter
+@Setter
+@Entity
+@AssetInfo(
+		displayName = "Hard Drive",
+		pluralName = "Hard Drives",
+		type = "hdd"
+)
+@Table(name = "hdd_assets")
+public class HddAsset implements Asset
+{
+	@Id
+	@GeneratedValue
+	private long id;
+
+	@OneToOne(orphanRemoval = true)
+	private GenericAsset asset;
+
+	@Property("Capacity")
+	@Capacity(si = true, iec = true)
+	private Long capacity;
+
+	@Description("The drive's interface type, such as SATA, IDE, ISA-16, ...")
+	@Property("Interface Type")
+	@InputList
+	private String interfaceType;
+
+	@Description("The drive's form factor, such as 2.5\", 3.5\", etc.")
+	@Property("Form Factor")
+	@InputList
+	private String formFactor;
+
+	@Description("The drive's RPM (Revolutions Per Minute) speed, if applicable.")
+	@Property("RPM Speed")
+	@HideInOverview
+	private Long rpmSpeed;
+
+	@Description("The drive's cache size, if applicable.")
+	@Property("Cache Size")
+	@HideInOverview
+	private Long cacheSize;
+
+	@Description("The drive's type, such as HDD, SSD, etc.")
+	@Property("Drive Type")
+	@InputList
+	private String driveType;
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/MotherboardAsset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/MotherboardAsset.java
@@ -0,0 +1,108 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.*;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Entity
+@AssetInfo(
+		displayName = "Motherboard",
+		pluralName = "Motherboards",
+		type = "motherboard"
+)
+@Table(name = "motherboard_assets")
+public class MotherboardAsset implements Asset
+{
+	@Id
+	@GeneratedValue
+	private long id;
+
+	/// The generic asset associated with this RAM.
+	@OneToOne(orphanRemoval = true)
+	private GenericAsset asset;
+
+	@Description("The number of 16-bit ISA slots on the motherboard.")
+	@Property("ISA-16 Slots")
+	@HideInOverview
+	private Long isa16Count;
+
+	@Description("The number of 8-bit ISA slots on the motherboard.")
+	@Property("ISA-8 Slots")
+	@HideInOverview
+	private Long isa8Count;
+
+	@Description("The number of PCI slots on the motherboard.")
+	@Property("PCI Slots")
+	@HideInOverview
+	private Long pciCount;
+
+	@Description("The number of PCIe x1 slots on the motherboard.")
+	@Property("PCIe x1 Slots")
+	@HideInOverview
+	private Long pcieX1Count;
+
+	@Description("The number of PCIe x4 slots on the motherboard.")
+	@Property("PCIe x4 Slots")
+	@HideInOverview
+	private Long pcieX4Count;
+
+	@Description("The number of PCIe x8 slots on the motherboard.")
+	@Property("PCIe x8 Slots")
+	@HideInOverview
+	private Long pcieX8Count;
+
+	@Description("The number of PCIe x16 slots on the motherboard.")
+	@Property("PCIe x16 Slots")
+	@HideInOverview
+	private Long pcieX16Count;
+
+	@Description("The number of AGP slots on the motherboard.")
+	@Property("AGP Slots")
+	@HideInOverview
+	private Long agpCount;
+
+	@Description("The number of RAM slots on the motherboard.")
+	@Property("RAM Slots")
+	@HideInOverview
+	private Long ramSlotCount;
+
+	@Description("The maximum amount of RAM supported by the motherboard, in bytes.")
+	@Property("Max RAM Capacity")
+	@HideInOverview
+	@Capacity
+	private Long maxRamCapacity;
+
+	@Description("The type of memory supported by the motherboard. E.g.: DDR2, SDRAM, etc...")
+	@Property("Memory Type")
+	@HideInOverview
+	@InputList
+	private String memoryType;
+
+	@Description("The type of CPU socket on the motherboard. E.g.: Socket 370, Socket A, etc...")
+	@Property("CPU Socket Type")
+	@InputList
+	private String cpuSocketType;
+
+	@Description("The chipset used by the motherboard.")
+	@Property("Chipset")
+	@InputList
+	private String chipset;
+
+	@Description("The type of BIOS used by the motherboard. E.g.: AMI, Phoenix, etc...")
+	@Property("BIOS Type")
+	@InputList
+	private String biosType;
+
+	@Description("The version of the BIOS used by the motherboard.")
+	@Property("BIOS Version")
+	@HideInOverview
+	private String biosVersion;
+
+	@Description("The form factor of the motherboard. E.g.: ATX, Micro-ATX, Mini-ITX, etc...")
+	@Property("Form Factor")
+	@InputList
+	private String formFactor;
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/RamAsset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/RamAsset.java
@@ -0,0 +1,41 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.*;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * Represents a RAM DIMM or similar memory asset in the inventory system.
+ */
+@Getter
+@Setter
+@Entity
+@AssetInfo(
+		displayName = "Random Access Memory",
+		pluralName = "Random Access Memories",
+		type = "ram"
+)
+@Table(name = "ram_assets")
+public class RamAsset implements Asset
+{
+	@Id
+	@GeneratedValue
+	private long id;
+
+	@OneToOne(orphanRemoval = true)
+	private GenericAsset asset;
+
+	@Property("Capacity")
+	@Capacity
+	private Long capacity;
+
+	@Description("The type of memory. E.g.: DDR2, SDRAM, ISA-8, etc...")
+	@Property("Type")
+	@InputList
+	private String type;
+
+	@Description("The speed of the memory in MHz.")
+	@Property("Speed")
+	private Long speed;
+}
--- a/src/main/java/be/seeseepuff/pcinv/models/SoundAdapterAsset.java
+++ b/src/main/java/be/seeseepuff/pcinv/models/SoundAdapterAsset.java
@@ -0,0 +1,30 @@
+package be.seeseepuff.pcinv.models;
+
+import be.seeseepuff.pcinv.meta.*;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Entity
+@AssetInfo(
+		displayName = "Sound Adapter",
+		pluralName = "Sound Adapters",
+		type = "sound"
+)
+@Table(name = "sound_assets")
+public class SoundAdapterAsset implements Asset
+{
+	@Id
+	@GeneratedValue
+	private long id;
+
+	/// The generic asset associated with this RAM.
+	@OneToOne(orphanRemoval = true)
+	private GenericAsset asset;
+
+	@Property("Chipset")
+	@InputList
+	private String chipset;
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/AssetRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/AssetRepository.java
@@ -0,0 +1,31 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.Asset;
+import be.seeseepuff.pcinv.models.GenericAsset;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface AssetRepository<T extends Asset> {
+    T saveAndFlush(T entity);
+
+    default Asset saveAndFlushAsset(Asset entity) {
+        if (getAssetType().isInstance(entity)) {
+            //noinspection unchecked
+            return saveAndFlush((T) entity);
+        } else {
+            throw new ClassCastException("Entity is not of type " + getAssetType().getName());
+        }
+    }
+
+    T findByAsset(GenericAsset asset);
+
+    void deleteByAsset(GenericAsset asset);
+
+    void flush();
+
+    List<T> findAll();
+
+    Class<T> getAssetType();
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/ChassisRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/ChassisRepository.java
@@ -0,0 +1,12 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.ChassisAsset;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+@SuppressWarnings("unused")
+public interface ChassisRepository extends JpaRepository<ChassisAsset, Long>, AssetRepository<ChassisAsset> {
+    @Override
+    default Class<ChassisAsset> getAssetType() {
+        return ChassisAsset.class;
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/DisplayAdapterRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/DisplayAdapterRepository.java
@@ -0,0 +1,12 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.DisplayAdapterAsset;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+@SuppressWarnings("unused")
+public interface DisplayAdapterRepository extends JpaRepository<DisplayAdapterAsset, Long>, AssetRepository<DisplayAdapterAsset> {
+    @Override
+    default Class<DisplayAdapterAsset> getAssetType() {
+        return DisplayAdapterAsset.class;
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/GenericAssetRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/GenericAssetRepository.java
@@ -0,0 +1,9 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.GenericAsset;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+@SuppressWarnings("unused")
+public interface GenericAssetRepository extends JpaRepository<GenericAsset, Long> {
+    GenericAsset findByQr(long qr);
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/HddRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/HddRepository.java
@@ -0,0 +1,12 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.HddAsset;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+@SuppressWarnings("unused")
+public interface HddRepository extends JpaRepository<HddAsset, Long>, AssetRepository<HddAsset> {
+    @Override
+    default Class<HddAsset> getAssetType() {
+        return HddAsset.class;
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/MotherboardRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/MotherboardRepository.java
@@ -0,0 +1,12 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.MotherboardAsset;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+@SuppressWarnings("unused")
+public interface MotherboardRepository extends JpaRepository<MotherboardAsset, Long>, AssetRepository<MotherboardAsset> {
+    @Override
+    default Class<MotherboardAsset> getAssetType() {
+        return MotherboardAsset.class;
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/RamRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/RamRepository.java
@@ -0,0 +1,12 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.RamAsset;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+@SuppressWarnings("unused")
+public interface RamRepository extends JpaRepository<RamAsset, Long>, AssetRepository<RamAsset> {
+    @Override
+    default Class<RamAsset> getAssetType() {
+        return RamAsset.class;
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/repositories/SoundAdapterRepository.java
+++ b/src/main/java/be/seeseepuff/pcinv/repositories/SoundAdapterRepository.java
@@ -0,0 +1,12 @@
+package be.seeseepuff.pcinv.repositories;
+
+import be.seeseepuff.pcinv.models.SoundAdapterAsset;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+@SuppressWarnings("unused")
+public interface SoundAdapterRepository extends JpaRepository<SoundAdapterAsset, Long>, AssetRepository<SoundAdapterAsset> {
+    @Override
+    default Class<SoundAdapterAsset> getAssetType() {
+        return SoundAdapterAsset.class;
+    }
+}
--- a/src/main/java/be/seeseepuff/pcinv/services/AssetService.java
+++ b/src/main/java/be/seeseepuff/pcinv/services/AssetService.java
@@ -0,0 +1,290 @@
+package be.seeseepuff.pcinv.services;
+
+import be.seeseepuff.pcinv.meta.AssetDescriptor;
+import be.seeseepuff.pcinv.meta.AssetDescriptors;
+import be.seeseepuff.pcinv.meta.AssetInfo;
+import be.seeseepuff.pcinv.meta.AssetProperty;
+import be.seeseepuff.pcinv.models.Asset;
+import be.seeseepuff.pcinv.models.GenericAsset;
+import be.seeseepuff.pcinv.repositories.AssetRepository;
+import be.seeseepuff.pcinv.repositories.GenericAssetRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.*;
+
+/**
+ * Service for managing assets in the repository.
+ * Provides methods to interact with the asset repositories.
+ */
+@Service
+@RequiredArgsConstructor
+public class AssetService {
+    private final GenericAssetRepository genericRepository;
+    private final Collection<AssetRepository<?>> repositories;
+
+    /**
+     * Returns the count of all assets in the repository.
+     *
+     * @return the total number of assets
+     */
+    public long countAssets() {
+        return genericRepository.count();
+    }
+
+    /**
+     * Retrieves an asset by its QR code.
+     *
+     * @param qr the QR code of the asset to retrieve
+     * @return the Asset associated with the given QR code
+     * @throws IllegalArgumentException if no asset is found with the given QR code
+     */
+    public Asset getAssetByQr(long qr) {
+        var genericAsset = genericRepository.findByQr(qr);
+        if (genericAsset == null) {
+            throw new IllegalArgumentException("No asset found with QR code: " + qr);
+        }
+        return getRepositoryFor(genericAsset.getType()).findByAsset(genericAsset);
+    }
+
+    /**
+     * Retrieves all assets of a specific type.
+     *
+     * @param type the type of asset to retrieve
+     * @return a list of assets of the specified type
+     */
+    public List<? extends Asset> getAssetsByType(String type) {
+        return getRepositoryFor(type).findAll();
+    }
+
+    /**
+     * Retrieves the global asset descriptors for all asset types.
+     *
+     * @return the AssetProperties for the specified type
+     */
+    public AssetDescriptors getAssetDescriptors() {
+        var descriptors = new AssetDescriptors();
+        descriptors.loadFrom(GenericAsset.class);
+        for (var repository : repositories) {
+            descriptors.loadFrom(repository.getAssetType());
+        }
+        return descriptors;
+    }
+
+    /**
+     * Retrieves the asset properties for a specific type.
+     *
+     * @param type the type of asset to retrieve properties for
+     * @return the AssetProperties for the specified type
+     */
+    public AssetDescriptor getAssetDescriptor(String type) {
+        return getAssetDescriptors().getAssets().stream()
+                .filter(asset -> asset.getType().equals(type))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unknown asset type: " + type));
+    }
+
+    /**
+     * Retrieves a tree of asset descriptors for the specified type.
+     *
+     * @param type the type of asset to retrieve descriptors for
+     * @return a list of AssetDescriptors for the specified type
+     */
+    public List<AssetDescriptor> getAssetDescriptorTree(String type) {
+        if (type.equals(GenericAsset.TYPE)) {
+            return List.of(getAssetDescriptor(GenericAsset.TYPE));
+        }
+        return List.of(getAssetDescriptor(GenericAsset.TYPE), getAssetDescriptor(type));
+    }
+
+    /**
+     * Creates a new asset of the specified type with the provided form data.
+     *
+     * @param type The type of asset to create.
+     * @param formData The form data containing the asset properties.
+     * @return The created asset.
+     */
+    @Transactional
+    public Asset createAsset(String type, Map<String, String> formData) {
+        var genericDescriptor = getAssetDescriptor(GenericAsset.TYPE);
+        var assetDescriptor = getAssetDescriptor(type);
+
+        var genericAsset = new GenericAsset();
+        genericAsset.setType(type);
+        fillIn(genericAsset, genericDescriptor, formData);
+
+        var asset = assetDescriptor.newInstance();
+        fillIn(asset, assetDescriptor, formData);
+
+        genericAsset = genericRepository.saveAndFlush(genericAsset);
+        asset.setAsset(genericAsset);
+        asset = getRepositoryFor(type).saveAndFlushAsset(asset);
+        return asset;
+    }
+
+    /**
+     * Edits an existing asset with the provided form data.
+     *
+     * @param qr The QR code of the asset to edit.
+     * @param formData The form data containing the updated asset properties.
+     * @return The updated asset.
+     */
+    @Transactional
+    public Asset editAsset(long qr, Map<String, String> formData) {
+        var genericAsset = genericRepository.findByQr(qr);
+        if (genericAsset == null) {
+            throw new IllegalArgumentException("No asset found with QR code: " + qr);
+        }
+
+        var assetType = genericAsset.getType();
+        var assetDescriptor = getAssetDescriptor(assetType);
+        var asset = getRepositoryFor(assetType).findByAsset(genericAsset);
+
+        fillIn(genericAsset, getAssetDescriptor(GenericAsset.TYPE), formData);
+        fillIn(asset, assetDescriptor, formData);
+
+        genericRepository.saveAndFlush(genericAsset);
+        return getRepositoryFor(assetType).saveAndFlushAsset(asset);
+    }
+
+    /**
+     * Gets the asset repository for the specified type.
+     *
+     * @param type the type of asset to get the repository for
+     * @return the AssetRepository for the specified type
+     */
+    private AssetRepository<?> getRepositoryFor(String type) {
+        return repositories.stream()
+                .filter(repo -> repo.getAssetType().getAnnotation(AssetInfo.class).type().equals(type))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("No repository found for type: " + type));
+    }
+
+    /**
+     * Fills in the properties of a generic asset from the form data.
+     *
+     * @param asset The generic asset to fill in.
+     * @param assetDescriptor The descriptor containing the properties to fill in.
+     * @param formData The form data containing the property values.
+     */
+    private void fillIn(Object asset, AssetDescriptor assetDescriptor, Map<String, String> formData) {
+        for (var property : assetDescriptor.getProperties()) {
+            var value = parseValue(assetDescriptor, property, formData);
+            if (property.isInputList()) {
+                var selectedItem = formData.get(assetDescriptor.asString(property) + "-list");
+                if (selectedItem != null && !selectedItem.isBlank() && !selectedItem.equals("__new__")) {
+                    value = selectedItem;
+                }
+            }
+            if (value == null && property.isRequired()) {
+                throw new IllegalArgumentException("Property '" + property.getName() + "' is required but not provided.");
+            }
+            property.setValue(asset, value);
+        }
+    }
+
+    /**
+     * Parses the string value into the appropriate type based on the asset property.
+     *
+     * @param descriptor The asset descriptor containing the property.
+     * @param property The asset property to determine the type.
+     * @param values The map of values from the form data.
+     * @return The parsed value as an Object.
+     */
+    private Object parseValue(AssetDescriptor descriptor, AssetProperty property, Map<String, String> values) {
+        if (property.getType() == AssetProperty.Type.CAPACITY) {
+            var value = values.get(descriptor.asString(property) + "-value");
+            var unit = values.get(descriptor.asString(property) + "-unit");
+            if (value == null || value.isBlank() || unit == null || unit.isBlank()) {
+                return null;
+            }
+
+            try {
+                return Long.parseLong(value) * Long.parseLong(unit);
+            } catch (NumberFormatException e) {
+                throw new IllegalArgumentException("Invalid numeric value for property '" + property.getName() + "': " + value, e);
+            }
+        }
+
+        var stringValue = values.get(descriptor.asString(property));
+        if (stringValue == null || stringValue.isBlank()) {
+            return null;
+        }
+
+        if (property.getType() == AssetProperty.Type.INTEGER) {
+            return Integer.parseInt(stringValue);
+        } else if (property.getType() == AssetProperty.Type.STRING) {
+            return stringValue;
+        } else if (property.getType().isEnum) {
+            for (var option : property.getOptions()) {
+                if (option.getValue().equals(stringValue)) {
+                    return option.getEnumConstant();
+                }
+            }
+            throw new IllegalArgumentException("Invalid value for enum property '" + property.getName() + "': " + stringValue);
+        } else {
+            throw new IllegalArgumentException("Unsupported property type: " + property.getType());
+        }
+    }
+
+    @Transactional
+    public void deleteAsset(long qr) {
+        var genericAsset = genericRepository.findByQr(qr);
+        if (genericAsset == null) {
+            throw new IllegalArgumentException("No asset found with QR code: " + qr);
+        }
+        var assetType = genericAsset.getType();
+        var assetRepository = getRepositoryFor(assetType);
+        assetRepository.deleteByAsset(genericAsset);
+        assetRepository.flush();
+        genericRepository.delete(genericAsset);
+        genericRepository.flush();
+    }
+
+    /**
+     * Retrieves the input list mapping for a specific asset type.
+     *
+     * @param type the type of asset to retrieve the input list for
+     * @return a map of input names to their corresponding list
+     */
+    public Map<String, Set<String>> getInputList(String type) {
+        var map = new HashMap<String, Set<String>>();
+        var tree = getAssetDescriptorTree(type);
+        for (var descriptor : tree) {
+            for (var property : descriptor.getProperties()) {
+                if (property.isInputList()) {
+                    var inputList = getInputList(descriptor, property);
+                    map.put(descriptor.asString(property), inputList);
+                }
+            }
+        }
+        return map;
+    }
+
+    /**
+     * Retrieves the input list for a specific asset descriptor and property.
+     *
+     * @param descriptor the asset descriptor containing the property
+     * @param property the asset property to retrieve the input list for
+     * @return a set of input values for the specified property
+     */
+    private Set<String> getInputList(AssetDescriptor descriptor, AssetProperty property) {
+        List<?> entries;
+        if (descriptor.getType().equals(GenericAsset.TYPE)) {
+            entries = genericRepository.findAll();
+        } else {
+            var repository = getRepositoryFor(descriptor.getType());
+            entries = repository.findAll();
+        }
+
+        Set<String> inputList = new TreeSet<>();
+        for (var entry : entries) {
+            var value = property.getValue(entry);
+            if (value != null) {
+                inputList.add(value.toString());
+            }
+        }
+        return inputList;
+    }
+}
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -0,0 +1,6 @@
+spring.application.name=pcinv
+server.port=8088
+spring.datasource.url=jdbc:postgresql://localhost:5432/pcinv
+spring.datasource.username=pcinv
+spring.datasource.password=pcinv
+spring.jpa.hibernate.ddl-auto=update
--- a/src/main/resources/templates/browse.html
+++ b/src/main/resources/templates/browse.html
@@ -0,0 +1,10 @@
+<body th:replace="~{fragments :: base(title='Browse assets', content=~{::content})}">
+<div th:fragment="content">
+  View device details
+  <ul>
+    <li th:each="d : ${descriptors.getAssets()}" th:if="${d.visible}">
+      <a th:href="'/browse/'+${d.getType()}" th:text="${d.pluralName}"></a>
+    </li>
+  </ul>
+</div>
+</body>
--- a/src/main/resources/templates/browse_type.html
+++ b/src/main/resources/templates/browse_type.html
@@ -0,0 +1,21 @@
+<body th:replace="~{fragments :: base(title='View '+${descriptor.pluralName}, content=~{::content})}">
+<div th:fragment="content">
+  There are <span th:text="${assets.size()}"></span> <span th:text="${descriptor.pluralName}"></span> in the database.
+  <table border="1" cellpadding="4">
+    <tr bgcolor="#d3d3d3">
+      <th th:each="p : ${properties}" th:if="${!p.hideInOverview}" th:text="${p.displayName}"></th>
+      <th>Actions</th>
+    </tr>
+    <tr th:each="a : ${assets}">
+        <td th:each="p : ${properties}" th:if="${!p.hideInOverview}">
+          <a th:if="${p.name == 'qr'}" th:href="'/view/'+${a.getQr()}" th:text="${p.renderValue(a)}"></a>
+          <span th:if="${p.name != 'qr'}" th:text="${p.renderValue(a)}"></span>
+        </td>
+        <td>
+          <a th:href="'/view/'+${a.getQr()}">View</a>
+          <a th:href="'/edit/'+${a.getQr()}">Edit</a>
+        </td>
+    </tr>
+  </table>
+</div>
+</body>
--- a/src/main/resources/templates/create_asset.html
+++ b/src/main/resources/templates/create_asset.html
@@ -0,0 +1,49 @@
+<body th:replace="~{fragments :: base(title='Create '+${descriptor.displayName}, content=~{::content})}">
+<div th:fragment="content">
+	Create a <span th:text="${descriptor.displayName}"></span>
+	<form th:action="'/'+${action}+'/'+${asset != null ? asset.getQr() : descriptor.getType()}" method="post">
+		<div th:each="d : ${descriptors}">
+			<h2 th:text="${d.displayName}"></h2>
+			<table border="1" cellpadding="4">
+				<tr th:each="p : ${d.getProperties()}">
+					<td bgcolor="#d3d3d3"><b><label th:text="${p.displayName}" th:for="${d.asString(p)}" th:title="${p.description}"></label></b></td>
+					<td th:switch="${p.type.nameOrEnum()}">
+						<span th:case="STRING">
+							<select th:if="${p.inputList}" th:id="${d.asString(p)+'-list'}" th:name="${d.asString(p)+'-list'}">
+								<option value="__new__">New...</option>
+								<option th:each="e : ${inputLists.get(d.asString(p))}" th:text="${e}" th:value="${e}"></option>
+							</select>
+							<span th:if="${p.inputList}"> or </span>
+							<input type="text" th:id="${d.asString(p)}" th:name="${d.asString(p)}" th:value="${p.getValue(asset)}" th:placeholder="${p.displayName}" th:required="${p.required}"/>
+						</span>
+						<input th:case="STRING" type="text" th:id="${d.asString(p)}" th:name="${d.asString(p)}" th:value="${p.getValue(asset)}" th:placeholder="${p.displayName}" th:required="${p.required}"/>
+						<input th:case="INTEGER" type="number" th:id="${d.asString(p)}" th:name="${d.asString(p)}" th:value="${p.getValue(asset)}" th:required="${p.required}"/>
+						<select th:case="enum" th:id="${d.asString(p)}" th:name="${d.asString(p)}">
+							<option th:each="o : ${p.options}" th:value="${o.value}" th:text="${o.displayName}" th:selected="${asset != null ? (p.getValue(asset) == o.enumConstant) : o.defaultValue}">Good</option>
+						</select>
+						<span th:case="CAPACITY">
+							<input type="number" th:id="${d.asString(p)+'-value'}" th:name="${d.asString(p)+'-value'}" th:required="${p.required}"/>
+							<select th:id="${d.asString(p)}+'-unit'" th:name="${d.asString(p)}+'-unit'">
+								<option value="1">Bytes</option>
+								<option th:if="${p.capacityAsSI}">kB</option>
+								<option th:if="${p.capacityAsIEC}">KiB</option>
+								<option th:if="${p.capacityAsSI}">MB</option>
+								<option th:if="${p.capacityAsIEC}">MiB</option>
+								<option th:if="${p.capacityAsSI}">GB</option>
+								<option th:if="${p.capacityAsIEC}">GiB</option>
+								<option th:if="${p.capacityAsSI}">TB</option>
+								<option th:if="${p.capacityAsIEC}">TiB</option>
+							</select>
+						</span>
+						<b th:case="*">Bad input type for <span th:text="${d.type}+'-'+${p.type}"></span></b>
+					</td>
+				</tr>
+			</table>
+		</div>
+		<p>
+			<input th:if="${action == 'create'}" type="submit" value="Create">
+			<input th:if="${action == 'edit'}" type="submit" value="Save Changes">
+		</p>
+	</form>
+</div>
+</body>
--- a/src/main/resources/templates/create_select.html
+++ b/src/main/resources/templates/create_select.html
@@ -0,0 +1,8 @@
+<body th:replace="~{fragments :: base(title='Select type to create', content=~{::content})}">
+  <div th:fragment="content">
+    Create a new device
+    <ul>
+      <li th:each="d : ${descriptors.getAssets()}" th:if="${d.visible}"><a th:href="'/create/'+${d.getType()}" th:text="${d.displayName}"></a></li>
+    </ul>
+  </div>
+</body>
--- a/src/main/resources/templates/fragments.html
+++ b/src/main/resources/templates/fragments.html
@@ -0,0 +1,21 @@
+<html lang="en" xmlns:th="http://www.thymeleaf.org" th:fragment="base(title, content)">
+<head>
+    <meta charset="UTF-8">
+    <title>PC Inventory</title>
+</head>
+<body>
+<h1>PC Inventory - <span th:text="${title}"></span>
+</h1>
+<hr>
+    <a href="/">Home</a>
+    <a href="/browse">Browse</a>
+    <a href="/create">Create</a>
+<hr>
+<div th:replace="${content}">
+</div>
+<hr>
+<p>
+    <small>Rendered in <span th:text="${#execInfo.getNow().getTimeInMillis() - time}">25</span>ms on <span th:text="${#dates.format(#execInfo.getNow(), 'dd/MM/yyyy HH:mm')}"></span>.</small>
+</p>
+</body>
+</html>
--- a/src/main/resources/templates/index.html
+++ b/src/main/resources/templates/index.html
@@ -0,0 +1,12 @@
+<div th:replace="fragments :: base(title='Home', content=~{::content})">
+	<div th:fragment="content">
+		<p>This system holds <span th:text="${asset_count}">5</span> assets.</p>
+		<form action="/search" method="get">
+			<label>
+				Find an asset via QR code:
+				<input type="number" name="qr" placeholder="Find by QR..." />
+			</label>
+			<input type="submit" value="Search" />
+		</form>
+	</div>
+</div>
--- a/src/main/resources/templates/view.html
+++ b/src/main/resources/templates/view.html
@@ -0,0 +1,26 @@
+<body th:replace="~{fragments :: base(title='View asset information', content=~{::content})}">
+<div th:fragment="content">
+  <h2 th:if="${action == 'view'}">Details of <span th:text="${descriptor.displayName}">Hard Disk Drive</span> <span th:text="${asset.getQr()}">21</span></h2>
+  <h2 th:if="${action == 'delete'}">Are you sure you want to delete <span th:text="${descriptor.displayName}">Hard Disk Drive</span> <span th:text="${asset.getQr()}">21</span></h2>
+  <div th:each="d : ${descriptors}">
+    <h2 th:text="${d.displayName}"></h2>
+    <table border="1" cellpadding="4">
+      <tr th:each="p : ${d.properties}">
+        <td bgcolor="lightgray"><b th:text="${p.displayName}"></b></td>
+        <td th:text="${p.renderValue(asset)}"></td>
+      </tr>
+    </table>
+  </div>
+  <p>
+    <ul th:if="${action == 'view'}">
+      <li><a th:href="'/edit/'+${asset.getQr()}">Edit</a></li>
+      <li><a th:href="'/delete/'+${asset.getQr()}">Delete</a></li>
+      <li><a th:href="'/browse/'+${descriptor.type}">Browse all <span th:text="${descriptor.pluralName}">Hard Drives</span></a></li>
+    </ul>
+    <ul th:if="${action == 'delete'}">
+      <li><a th:href="'/view/'+${asset.getQr()}">No</a></li>
+      <li><a th:href="'/delete/'+${asset.getQr()}+'?confirm=true'">Yes, delete it</a></li>
+    </ul>
+  </p>
+</div>
+</body>
--- a/src/test/java/be/seeseepuff/pcinv/PcinvApplicationTests.java
+++ b/src/test/java/be/seeseepuff/pcinv/PcinvApplicationTests.java
@@ -0,0 +1,13 @@
+package be.seeseepuff.pcinv;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class PcinvApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}
--- a/static/scripts.js
+++ b/static/scripts.js
@@ -1,16 +0,0 @@
-function newOption(elementId, name) {
-    var el = document.getElementById(elementId)
-    if (el.value !== "New...") {
-        return
-    }
-
-    var newValue = window.prompt("Enter " + name + " Name")
-    if (newValue === null) {
-        return;
-    }
-    var child = document.createElement("option")
-    child.value = newValue
-    child.innerText = newValue
-    el.prepend(child)
-    el.value = newValue
-}
--- a/template_debug.go
+++ b/template_debug.go
@@ -1,8 +0,0 @@
-// / +build !release
-package main
-
-import (
-	"net/http"
-)
-
-const staticFiles = http.Dir("./static")
--- a/template_funcs.go
+++ b/template_funcs.go
@@ -1,121 +0,0 @@
-package main
-
-import (
-	"fmt"
-)
-
-func createDeviceLink(deviceType, name string, qr *int) CreateDeviceLink {
-	return CreateDeviceLink{
-		Type: deviceType,
-		Name: name,
-		Qr:   qr,
-	}
-}
-
-type CreateDeviceLink struct {
-	Type string
-	Name string
-	Qr   *int
-}
-
-func formatMemoryUnit(size int) string {
-	const (
-		KB = 1024
-		MB = KB * 1024
-		GB = MB * 1024
-	)
-
-	switch {
-	case size >= GB:
-		return "GB"
-	case size >= MB:
-		return "MB"
-	case size >= KB:
-		return "KB"
-	default:
-		return "B"
-	}
-}
-
-func formatMemorySize(size int) string {
-	const (
-		KB = 1024
-		MB = KB * 1024
-		GB = MB * 1024
-	)
-
-	switch formatMemoryUnit(size) {
-	case "GB":
-		return fmt.Sprintf("%.2f GB", float64(size)/GB)
-	case "MB":
-		return fmt.Sprintf("%.2f MB", float64(size)/MB)
-	case "KB":
-		return fmt.Sprintf("%.2f KB", float64(size)/KB)
-	case "B":
-		return fmt.Sprintf("%d B", size)
-	default:
-		panic("invalid memory size")
-	}
-}
-
-func formatMemoryPlainSize(size int) int {
-	const (
-		KB = 1024
-		MB = KB * 1024
-		GB = MB * 1024
-	)
-
-	switch formatMemoryUnit(size) {
-	case "GB":
-		return size / GB
-	case "MB":
-		return size / MB
-	case "KB":
-		return size / KB
-	case "B":
-		return size
-	default:
-		panic("invalid memory size")
-	}
-}
-
-func isRamType(size int, unit string) bool {
-	if size == 0 && unit == "MB" {
-		return true
-	}
-	actualUnit := formatMemoryUnit(size)
-	return unit == actualUnit
-}
-
-func formatType(t string) string {
-	switch t {
-	case "ram":
-		return "Random Access Memory"
-	case "hdd":
-		return "Hard Disk Drive"
-	default:
-		return t
-	}
-}
-
-type SelectMenu struct {
-	Name         string
-	Label        string
-	Selected     string
-	Options      []string
-	DefaultValue string
-}
-
-func createSelectMenu(name, label, selected string, options []string) SelectMenu {
-	return createSelectMenuDefault(name, label, selected, options, "Unknown")
-}
-
-func createSelectMenuDefault(name, label, selected string, options []string, defaultValue string) SelectMenu {
-	return SelectMenu{
-		Name:         name,
-		Label:        label,
-		Selected:     selected,
-		Options:      options,
-		DefaultValue: defaultValue,
-	}
-}
--- a/templates/browse.gohtml
+++ b/templates/browse.gohtml
@@ -1,31 +0,0 @@
-{{- /*gotype: main.BrowseVM */}}
-{{define "browse"}}
-{{template "header" "Search Results"}}
-	<table border="1">
-		<tr>
-			<th>QR</th>
-			<th>Type</th>
-			<th>Name</th>
-			<th>Brand</th>
-			<th>Description</th>
-			{{if .HasRam}}
-				<th>RAM Type</th>
-				<th>RAM Capacity</th>
-			{{end}}
-		</tr>
-		{{range .Assets}}
-		<tr>
-			<td><a href="/device?id={{.Qr}}">{{.Qr}}</a></td>
-			<td><a href="/device?id={{.Qr}}">{{.Type | formatType}}</a></td>
-			<td>{{.Name}}</td>
-			<td>{{.Brand}}</td>
-			<td>{{.Description}}</td>
-			{{if $.HasRam}}
-				<td>{{.RamType}}</td>
-				<td>{{.RamCapacity | formatMemorySize}}</td>
-			{{end}}
-		</tr>
-		{{end}}
-	</table>
-{{template "footer"}}
-{{end}}
--- a/templates/create_device.gohtml
+++ b/templates/create_device.gohtml
@@ -1,8 +0,0 @@
-{{- /*gotype: main.CreateDeviceVM */}}
-{{define "create_device"}}
-	{{if .Type}}
-		{{template "create_device_step2" .}}
-	{{else}}
-		{{template "create_device_step1" .}}
-	{{end}}
-{{end}}
--- a/templates/create_device_step1.gohtml
+++ b/templates/create_device_step1.gohtml
@@ -1,18 +0,0 @@
-{{- /*gotype: main.CreateDeviceVM */}}
-{{define "create_device_step1"}}
-{{template "header" "Create Device - Choose Device Type"}}
-	<ul>
-		{{template "create_device_link" createDeviceLink "ram" "Random Access Memory" .Qr}}
-	</ul>
-{{template "footer"}}
-{{end}}
-
-{{define "create_device_link"}}
-    {{if .Qr}}
-		<li><a href="/create?type=ram&qr={{.Qr}}">{{"ram" | formatType}}</a></li>
-		<li><a href="/create?type=hdd&qr={{.Qr}}">{{"hdd" | formatType}}</a></li>
-    {{- else}}
-		<li><a href="/create?type=ram">{{"ram" | formatType}}</a></li>
-		<li><a href="/create?type=hdd">{{"hdd" | formatType}}</a></li>
-    {{- end}}
-{{end}}
--- a/templates/create_device_step2.gohtml
+++ b/templates/create_device_step2.gohtml
@@ -1,130 +0,0 @@
-{{- /*gotype: pcinv.CreateDeviceVM*/}}
-{{define "create_device_step2"}}
-{{template "header" "Create Device - Enter Device Data"}}
-	<form action="/create" method="post">
-		<h2>General Information</h2>
-		<table>
-			<tr>
-				<td><label for="qr">QR Code:</label></td>
-				{{if .Qr}}
-					<td><input type="number" id="qr" name="qr" value="{{.Qr}}" required readonly></td>
-				{{else}}
-					<td><input type="number" id="qr" name="qr" required></td>
-				{{end}}
-			</tr>
-			<tr>
-				<td><label for="asset_type">Type:</label></td>
-				<td><input type="text" id="asset_type" name="asset_type" required readonly value="{{.Type}}"></td>
-			</tr>
-			<tr>
-				<td><label for="asset_brand">Brand:</label></td>
-				<td>
-					<select id="asset_brand" name="asset_brand" onchange="newOption('asset_brand', 'Brand')">
-						<option value="Unknown" {{if eq .AssetBrand "Unknown"}}selected{{end}}>Unknown</option>
-						{{range .AssetBrands}}
-							{{if ne . "Unknown"}}
-								<option value="{{.}}" {{if eq . $.AssetBrand}}selected{{end}}>{{.}}</option>
-							{{end}}
-						{{end}}
-						<option>New...</option>
-					</select>
-				</td>
-			</tr>
-			<tr>
-				<td><label for="asset_name">Name:</label></td>
-				<td><input type="text" id="asset_name" name="asset_name" value="{{.AssetName}}"></td>
-			</tr>
-			<tr>
-				<td><label for="asset_description">Description:</label></td>
-				<td><textarea id="asset_description" name="asset_description">{{.AssetDescription}}</textarea></td>
-			</tr>
-		</table>
-
-        {{if eq .Type "ram"}}
-			<h2>Memory Information</h2>
-			<table>
-				<tr>
-					<td><label for="ram_type">Type:</label></td>
-					<td>
-						<select id="ram_type" name="ram_type" onchange="newOption('ram_type', 'Memory Type')">
-							<option value="Unknown" {{if eq .RamType "Unknown"}}selected{{end}}>Unknown</option>
-							{{range .RamTypes}}
-								{{if ne . "Unknown"}}
-									<option value="{{.}}" {{if eq . $.RamType}}selected{{end}}>{{.}}</option>
-								{{end}}
-							{{end}}
-							<option>New...</option>
-						</select>
-					</td>
-				</tr>
-				<tr>
-					<td><label for="ram_capacity">Capacity:</label></td>
-					<td>
-						<input type="number" id="ram_capacity" name="ram_capacity" value="{{if .RamCapacity}}{{.RamCapacity | formatMemoryPlainSize}}{{end}}">
-						<select id="ram_capacity_unit" name="ram_capacity_unit">
-							<option value="B" {{if isRamType .RamCapacity "B"}}selected{{end}}>B</option>
-							<option value="KB" {{if isRamType .RamCapacity "KB"}}selected{{end}}>KB</option>
-							<option value="MB" {{if isRamType .RamCapacity "MB"}}selected{{end}} selected>MB</option>
-							<option value="GB" {{if isRamType .RamCapacity "GB"}}selected{{end}}>GB</option>
-							<option value="TB" {{if isRamType .RamCapacity "TB"}}selected{{end}}>TB</option>
-						</select>
-					</td>
-				</tr>
-			</table>
-		{{end}}
-
-		{{if eq .Type "hdd"}}
-			<h2>Hard Drive Information</h2>
-			<table>
-				<tr>
-					<td><label for="hdd_capacity">Capacity:</label></td>
-					<td>
-						<input type="number" id="hdd_capacity" name="hdd_capacity" value="{{if .HddCapacity}}{{.HddCapacity | formatMemoryPlainSize}}{{end}}">
-						<select id="hdd_capacity_unit" name="hdd_capacity_unit">
-							<option value="B" {{if isRamType .HddCapacity "B"}}selected{{end}}>B</option>
-							<option value="KB" {{if isRamType .HddCapacity "KB"}}selected{{end}}>KB</option>
-							<option value="MB" {{if isRamType .HddCapacity "MB"}}selected{{end}} selected>MB</option>
-							<option value="GB" {{if isRamType .HddCapacity "GB"}}selected{{end}}>GB</option>
-							<option value="TB" {{if isRamType .HddCapacity "TB"}}selected{{end}}>TB</option>
-						</select>
-					</td>
-				</tr>
-				<tr>
-					<td><label for="hdd_type">Type:</label></td>
-					<td>{{template "create_device_select" createSelectMenu "hdd_type" "HDD Type" .HddType .HddTypes}}</td>
-				</tr>
-				<tr>
-					<td><label for="hdd_form_factor">Form Factor:</label></td>
-					<td>{{template "create_device_select" createSelectMenu "hdd_form_factor" "HDD Form Factor" .HddFormFactor .HddFormFactors}}</td>
-				</tr>
-				<tr>
-					<td><label for="hdd_connection">Connection:</label></td>
-					<td>{{template "create_device_select" createSelectMenu "hdd_connection" "HDD Connection" .HddConnection .HddConnections}}</td>
-				</tr>
-				<tr>
-					<td><label for="hdd_rpm">RPM:</label></td>
-					<td>{{template "create_device_select" createSelectMenuDefault "hdd_rpm" "HDD RPM" .HddRpm .HddRpms "Not Applicable"}}</td>
-				</tr>
-			</table>
-		{{end}}
-
-		{{if .IsEdit}}
-			<button type="submit">Edit</button>
-		{{else}}
-			<button type="submit">Create</button>
-		{{end}}
-	</form>
-{{template "footer"}}
-{{end}}
-
-{{define "create_device_select"}}
-	<select id="{{.Name}}" name="{{.Name}}" onchange="newOption('{{.Name}}', '{{.Label}}')">
-		<option value="Unknown" {{if eq .Selected "Unknown"}}selected{{end}}>{{.DefaultValue}}</option>
-		{{range .Options}}
-			{{if ne . "Unknown"}}
-				<option value="{{.}}" {{if eq . $.Selected}}selected{{end}}>{{.}}</option>
-			{{end}}
-		{{end}}
-		<option>New...</option>
-	</select>
-{{end}}
--- a/templates/delete.gohtml
+++ b/templates/delete.gohtml
@@ -1,9 +0,0 @@
-{{- /*gotype: pcinv.DeleteVM*/ -}}
-{{define "delete"}}
-{{template "header" "Delete Device"}}
-	<h2>Are you sure you want to delete this device?</h2>
-	<form id="confirmForm" method="post" action="/delete?id={{.Qr}}"></form>
-	<a href="/device?id={{.Qr}}"><button><b>No</b></button></a>
-	<button form="confirmForm">Yes</button>
-{{template "footer"}}
-{{end}}
--- a/templates/device.gohtml
+++ b/templates/device.gohtml
@@ -1,57 +0,0 @@
-{{- /*gotype: main.DeviceVM */}}
-{{define "device"}}
-{{template "header" "Device Details"}}
-	<table border="1">
-		<tr>
-			<td>Name:</td>
-			<td>{{.Name}}</td>
-		</tr>
-		<tr>
-			<td>Brand:</td>
-			<td>{{.Brand}}</td>
-		</tr>
-		<tr>
-			<td>Type:</td>
-			<td>{{.Type}}</td>
-		</tr>
-		<tr>
-			<td>Description:</td>
-			<td>{{.Description}}</td>
-		</tr>
-		{{if eq .Type "ram"}}
-			<tr>
-				<td>RAM Type:</td>
-				<td>{{.RamType}}</td>
-			</tr>
-			<tr>
-				<td>RAM Capacity:</td>
-				<td>{{.RamCapacity | formatMemorySize}}</td>
-			</tr>
-		{{end}}
-		{{if eq .Type "hdd"}}
-			<tr>
-				<td>HDD Capacity:</td>
-				<td>{{.HddCapacity}}</td>
-			</tr>
-			<tr>
-				<td>HDD Type:</td>
-				<td>{{.HddType}}</td>
-			</tr>
-			<tr>
-				<td>Form Factor:</td>
-				<td>{{.HddFormFactor}}</td>
-			</tr>
-			<tr>
-				<td>Connection:</td>
-				<td>{{.HddConnection}}</td>
-			</tr>
-			<tr>
-				<td>RPM:</td>
-				<td>{{.HddRpm}}</td>
-			</tr>
-		{{end}}
-	</table>
-	<a href="/create?id={{.Qr}}&edit=true"><button>Edit</button></a>
-	<a href="/delete?id={{.Qr}}"><button>Delete</button></a>
-{{template "footer"}}
-{{end}}
--- a/templates/errors.gohtml
+++ b/templates/errors.gohtml
@@ -1,12 +0,0 @@
-{{- /*gotype: main.ErrorVM*/}}
-{{define "errors"}}
-{{template "header" .StatusCode | statusText}}
-
-<ul>
-    {{range .Errors}}
-		<li>{{.}}</li>
-    {{end}}
-</ul>
-
-{{template "footer"}}
-{{end}}
--- a/templates/footer.gohtml
+++ b/templates/footer.gohtml
@@ -1,4 +0,0 @@
-{{define "footer"}}
-</body>
-</html>
-{{end}}
--- a/templates/header.gohtml
+++ b/templates/header.gohtml
@@ -1,16 +0,0 @@
-{{define "header"}}
-<html>
-<head>
-	<title>PC Inventory{{if .}} - {{.}}{{end}}</title>
-	<script src="/static/scripts.js" type="application/javascript"></script>
-</head>
-<body>
-<h1><a href="/">PC Inventory</a>{{if .}} - <i>{{.}}{{end}}</i></h1>
-<form action="/device" method="get">
-	<label for="id">Device ID:</label>
-	<input type="text" id="id" name="id">
-	<button type="submit">Search</button>
-	<a href="/create">Create Device</a>
-</form>
-<hr>
-{{end}}
--- a/templates/index.gohtml
+++ b/templates/index.gohtml
@@ -1,34 +0,0 @@
-{{- /*gotype: main.IndexVM*/}}
-{{define "index"}}
-{{template "header"}}
-	<h2>Statistics</h2>
-	The inventory contains:
-	<ul>
-		<li><b>{{.AssetCount}}</b> assets in total.</li>
-		<li><b>{{.BrandCount}}</b> unique brands.</li>
-		<li>a combined <b>{{.TotalRamCapacity | formatMemorySize}}</b> of RAM.</li>
-	</ul>
-
-	<h2>Filter Devices</h2>
-	<form action="/browse" method="get">
-		<h3>Select Brands:</h3>
-		{{range .Brands}}
-		<label>
-			<input type="checkbox" name="brand" checked value="{{.}}">
-			{{.}}
-		</label><br>
-		{{end}}
-
-		<h3>Select Types:</h3>
-		{{range .Types}}
-		<label>
-			<input type="checkbox" name="type" checked value="{{.}}">
-			{{. | formatType}}
-		</label><br>
-		{{end}}
-
-		<button type="submit">Browse</button>
-	</form>
-
-{{template "footer"}}
-{{end}}
--- a/views.go
+++ b/views.go
@@ -1,430 +0,0 @@
-package main
-
-import (
-	"errors"
-	"fmt"
-	"net/http"
-	"strconv"
-
-	"gitea.seeseepuff.be/seeseemelk/mysqlite"
-	"github.com/gin-gonic/gin"
-)
-
-type App struct {
-	db *mysqlite.Db
-}
-
-type IndexVM struct {
-	AssetCount       int
-	BrandCount       int
-	TotalRamCapacity int
-	Brands           []string
-	Types            []string
-}
-
-func (a *App) getIndex(c *gin.Context) {
-	vm := &IndexVM{}
-	var err error
-	vm.AssetCount, err = a.GetAssetCount()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	vm.BrandCount, err = a.GetBrandCount()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	vm.TotalRamCapacity, err = a.GetTotalRamCapacity()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	vm.Brands, err = a.GetAllBrands()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	vm.Types, err = a.GetAllTypes()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	c.HTML(http.StatusOK, "index", vm)
-}
-
-type DeviceVM struct {
-	Qr            int
-	Name          string
-	Brand         string
-	Type          string
-	Description   string
-	RamType       string
-	RamCapacity   int
-	HddCapacity   int
-	HddType       string
-	HddFormFactor string
-	HddConnection string
-	HddRpm        int
-}
-
-func (a *App) getDevice(c *gin.Context) {
-	qr, err := strconv.Atoi(c.Query("id"))
-	if err != nil {
-		c.AbortWithError(http.StatusBadRequest, err)
-		return
-	}
-
-	var count int
-	err = a.db.Query("SELECT COUNT(*) FROM assets WHERE qr = ?").
-		Bind(qr).
-		ScanSingle(&count)
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	if count == 0 {
-		c.Redirect(http.StatusTemporaryRedirect, "/create?id="+strconv.Itoa(qr))
-		return
-	}
-
-	vm := &DeviceVM{Qr: qr}
-	err = a.db.Query("SELECT name, brand, type, description FROM assets WHERE qr = ?").
-		Bind(qr).
-		ScanSingle(&vm.Name, &vm.Brand, &vm.Type, &vm.Description)
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	if vm.Type == "ram" {
-		err = a.db.Query("SELECT type, capacity FROM info_ram WHERE asset = ?").
-			Bind(qr).
-			ScanSingle(&vm.RamType, &vm.RamCapacity)
-		if err != nil {
-			c.AbortWithError(http.StatusInternalServerError, err)
-			return
-		}
-	} else if vm.Type == "hdd" {
-		err = a.db.Query("SELECT capacity, type, form_factor, connection, rpm FROM info_hdd WHERE asset = ?").
-			Bind(qr).
-			ScanSingle(&vm.HddCapacity, &vm.HddType, &vm.HddFormFactor, &vm.HddConnection, &vm.HddRpm)
-		if err != nil {
-			c.AbortWithError(http.StatusInternalServerError, err)
-			return
-		}
-	}
-
-	c.HTML(http.StatusOK, "device", vm)
-}
-
-type CreateDeviceVM struct {
-	IsEdit bool
-
-	// Assets
-	Qr   *int
-	Type string
-
-	AssetBrand  string
-	AssetBrands []string
-
-	AssetName        string
-	AssetDescription string
-
-	// RAM
-	RamType  string
-	RamTypes []string
-
-	RamCapacity int
-
-	// HDD
-	HddCapacity int
-
-	HddType        string
-	HddTypes       []string
-	HddFormFactor  string
-	HddFormFactors []string
-	HddConnection  string
-	HddConnections []string
-	HddRpm         string
-	HddRpms        []string
-}
-
-func (a *App) getCreateDevice(c *gin.Context) {
-	var err error
-	vm := &CreateDeviceVM{}
-	vm.Type = c.Query("type")
-
-	qr := c.Query("id")
-	if qr != "" {
-		qrInt, err := strconv.Atoi(qr)
-		if err != nil {
-			c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("invalid qr: %v", err))
-			return
-		}
-		vm.Qr = &qrInt
-	}
-
-	err = a.GetAllGroups(vm)
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	if c.Query("edit") != "" && vm.Qr != nil {
-		vm.IsEdit = true
-		err = a.db.Query("SELECT name, type, brand, description FROM assets WHERE qr = ?").
-			Bind(*vm.Qr).
-			ScanSingle(&vm.AssetName, &vm.Type, &vm.AssetBrand, &vm.AssetDescription)
-		if err != nil {
-			c.AbortWithError(http.StatusInternalServerError, err)
-			return
-		}
-		if vm.Type == "ram" {
-			err = a.db.Query("SELECT type, capacity FROM info_ram WHERE asset = ?").
-				Bind(*vm.Qr).
-				ScanSingle(&vm.RamType, &vm.RamCapacity)
-			if err != nil {
-				c.AbortWithError(http.StatusInternalServerError, err)
-				return
-			}
-		} else if vm.Type == "hdd" {
-			err = a.db.Query("SELECT capacity, type, form_factor, connection, rpm FROM info_hdd WHERE asset = ?").
-				Bind(*vm.Qr).
-				ScanSingle(&vm.HddCapacity, &vm.HddType, &vm.HddFormFactor, &vm.HddConnection, &vm.HddRpm)
-			if err != nil {
-				c.AbortWithError(http.StatusInternalServerError, err)
-				return
-			}
-		}
-	}
-
-	c.HTML(http.StatusOK, "create_device", vm)
-}
-
-func (a *App) postCreateDevice(c *gin.Context) {
-	qr, err := strconv.Atoi(c.PostForm("qr"))
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("invalid qr: %v", err))
-	}
-	assetType := c.PostForm("asset_type")
-
-	tx, err := a.db.Begin()
-	defer tx.MustRollback()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("error beginning tx: %v", err))
-		return
-	}
-
-	err = a.DeleteAsset(tx, qr)
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("error removing assets: %v", err))
-		return
-	}
-	err = tx.Query("INSERT INTO assets (qr, type, brand, name, description) VALUES (?, ?, ?, ?, ?)").
-		Bind(qr, c.PostForm("asset_type"), c.PostForm("asset_brand"), c.PostForm("asset_name"), c.PostForm("asset_description")).
-		Exec()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("error inserting assets: %v", err))
-		return
-	}
-
-	if assetType == "ram" {
-		err = a.postCreateDeviceRam(c, qr, tx)
-	} else if assetType == "hdd" {
-		err = a.postCreateDeviceHdd(c, qr, tx)
-	} else {
-		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("invalid type: %s", assetType))
-		return
-	}
-
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-	c.Redirect(http.StatusSeeOther, "/")
-}
-
-func (a *App) postCreateDeviceRam(c *gin.Context, qr int, tx *mysqlite.Tx) error {
-	var err error
-	capacity := 0
-	capacityString := c.PostForm("ram_capacity")
-	if capacityString != "" {
-		capacity, err = strconv.Atoi(c.PostForm("ram_capacity"))
-		if err != nil {
-			return err
-		}
-	}
-	switch c.PostForm("ram_capacity_unit") {
-	case "B":
-	case "KB":
-		capacity *= 1024
-	case "MB":
-		capacity *= 1024 * 1024
-	case "GB":
-		capacity *= 1024 * 1024 * 1024
-	default:
-		return errors.New("invalid ram_capacity_unit")
-	}
-
-	err = tx.Query("INSERT INTO info_ram (asset, type, capacity) VALUES (?, ?, ?)").
-		Bind(qr, c.PostForm("ram_type"), capacity).Exec()
-	return err
-}
-
-func (a *App) postCreateDeviceHdd(c *gin.Context, qr int, tx *mysqlite.Tx) error {
-	var err error
-	capacity := 0
-	capacityString := c.PostForm("hdd_capacity")
-	if capacityString != "" {
-		capacity, err = strconv.Atoi(c.PostForm("hdd_capacity"))
-		if err != nil {
-			return err
-		}
-	}
-	switch c.PostForm("hdd_capacity_unit") {
-	case "B":
-	case "KB":
-		capacity *= 1024
-	case "MB":
-		capacity *= 1024 * 1024
-	case "GB":
-		capacity *= 1024 * 1024 * 1024
-	default:
-		return errors.New("invalid hdd_capacity_unit")
-	}
-
-	err = tx.Query("INSERT INTO info_hdd (asset, capacity, type, form_factor, connection, rpm) VALUES (?, ?, ?, ?, ?, ?)").
-		Bind(qr, capacity, c.PostForm("hdd_type"), c.PostForm("hdd_form_factor"), c.PostForm("hdd_connection"), c.PostForm("hdd_rpm")).
-		Exec()
-	return err
-}
-
-type BrowseVM struct {
-	Assets []Asset
-	HasRam bool
-}
-
-type Asset struct {
-	Qr            int
-	Name          string
-	Brand         string
-	Type          string
-	Description   string
-	RamType       string
-	RamCapacity   int
-	HddCapacity   int
-	HddType       string
-	HddFormFactor string
-	HddConnection string
-	HddRpm        int
-}
-
-func (a *App) getBrowse(c *gin.Context) {
-	brands := c.QueryArray("brand")
-	types := c.QueryArray("type")
-
-	query := `SELECT assets.qr, assets.name, assets.brand, assets.type, assets.description,
-    			info_ram.type, info_ram.capacity,
-				info_hdd.capacity, info_hdd.type, info_hdd.form_factor, info_hdd.connection, info_hdd.rpm
-				FROM assets 
-				LEFT JOIN info_ram ON info_ram.asset = assets.qr
-				LEFT JOIN info_hdd ON info_hdd.asset = assets.qr
-				WHERE 1=1`
-	if len(brands) > 0 {
-		query += " AND assets.brand IN (" + placeholders(len(brands)) + ")"
-	}
-	if len(types) > 0 {
-		query += " AND assets.type IN (" + placeholders(len(types)) + ")"
-	}
-	query += "ORDER BY assets.type, assets.brand, assets.name, assets.qr"
-
-	vm := &BrowseVM{}
-
-	var err error
-	q := a.db.Query(query).Bind(brands, types)
-	for row := range q.Range(&err) {
-		var asset Asset
-		err := row.Scan(&asset.Qr, &asset.Name, &asset.Brand, &asset.Type, &asset.Description,
-			&asset.RamType, &asset.RamCapacity,
-			&asset.HddCapacity, &asset.HddType, &asset.HddFormFactor, &asset.HddConnection, &asset.HddRpm)
-		if err != nil {
-			c.AbortWithError(http.StatusInternalServerError, err)
-			return
-		}
-		vm.Assets = append(vm.Assets, asset)
-		if asset.Type == "ram" {
-			vm.HasRam = true
-		}
-	}
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	c.HTML(http.StatusOK, "browse", vm)
-}
-
-type DeleteVM struct {
-	Qr int
-}
-
-func (a *App) getDelete(c *gin.Context) {
-	qr, err := strconv.Atoi(c.Query("id"))
-	if err != nil {
-		c.AbortWithError(http.StatusBadRequest, fmt.Errorf("invalid qr: %v", err))
-		return
-	}
-	vm := &DeleteVM{Qr: qr}
-	c.HTML(http.StatusOK, "delete", vm)
-}
-
-func (a *App) postDelete(c *gin.Context) {
-	qr, err := strconv.Atoi(c.Query("id"))
-	if err != nil {
-		c.AbortWithError(http.StatusBadRequest, fmt.Errorf("invalid qr: %v", err))
-		return
-	}
-	tx, err := a.db.Begin()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	err = a.DeleteAsset(tx, qr)
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-	c.Redirect(http.StatusSeeOther, "/")
-}
-
-func placeholders(count int) string {
-	if count == 0 {
-		return ""
-	}
-	placeholder := "?"
-	for count > 1 {
-		placeholder += ", ?"
-		count--
-	}
-	return placeholder
-}