Add support for duplicating assets

build.gradle.kts

@@ -29,6 +29,7 @@ dependencies {
     implementation("org.springframework.boot:spring-boot-starter-web")
     implementation("org.springframework.boot:spring-boot-starter-actuator")
     implementation("org.springdoc:springdoc-openapi-starter-webmvc-ui:2.8.8")
+    implementation("org.modelmapper:modelmapper:3.2.3")
     compileOnly("org.projectlombok:lombok")
     developmentOnly("org.springframework.boot:spring-boot-devtools")
     runtimeOnly("org.postgresql:postgresql")

src/main/java/be/seeseepuff/pcinv/controllers/WebController.java

@@ -226,6 +226,27 @@ public class WebController {
         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("/duplicate/{qr}")
+    public String duplicate(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, "duplicate");
+        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.
      *

src/main/java/be/seeseepuff/pcinv/meta/AssetProperty.java

@@ -99,7 +99,7 @@ public class AssetProperty {
                 .setter((obj, value) -> {
                     try {
                         property.setAccessible(true);
-                        property.set(obj, value);
+                        property.set(obj, Converters.convert(value, property.getType()));
                     } catch (IllegalAccessException e) {
                         throw new RuntimeException(e);
                     }

src/main/java/be/seeseepuff/pcinv/meta/Converters.java

@@ -0,0 +1,66 @@
+package be.seeseepuff.pcinv.meta;
+
+import lombok.experimental.UtilityClass;
+
+/**
+ * Utility class for converting values to different types.
+ */
+@UtilityClass
+public class Converters {
+    /**
+     * Converts a value to the specified target type.
+     *
+     * @param value  The value to convert.
+     * @param target The target class to convert the value to.
+     * @return The converted value, or null if conversion is not possible.
+     */
+    public static Object convert(Object value, Class<?> target) {
+        if (value == null) {
+            return null;
+        }
+        if (target.isInstance(value)) {
+            return value; // No conversion needed
+        }
+        if (value instanceof Long longValue) {
+            return convertLong(longValue, target);
+        }
+        if (value instanceof Integer intValue) {
+            return convertInteger(intValue, target);
+        }
+        throw new ClassCastException("Cannot convert " + value.getClass().getName() + " to " + target.getName());
+    }
+
+    /**
+     * Converts a Long value to the specified target type.
+     *
+     * @param value  The Long value to convert.
+     * @param target The target class to convert the value to.
+     * @return The converted value, or throws ClassCastException if conversion is not possible.
+     */
+    private static Object convertLong(Long value, Class<?> target) {
+        if (target == Long.class || target == long.class) {
+            return value; // No conversion needed
+        }
+        if (target == Integer.class || target == int.class) {
+            return value.intValue();
+        }
+        throw new ClassCastException("Cannot convert " + value.getClass().getName() + " to " + target.getName());
+    }
+
+    /**
+     * Converts an Integer value to the specified target type.
+     *
+     * @param value  The Integer value to convert.
+     * @param target The target class to convert the value to.
+     * @return The converted value, or throws ClassCastException if conversion is not possible.
+     */
+    private static Object convertInteger(Integer value, Class<?> target) {
+        if (target == Integer.class || target == int.class) {
+            return value; // No conversion needed
+        }
+        if (target == Long.class || target == long.class) {
+            return value.longValue();
+        }
+        throw new ClassCastException("Cannot convert " + value.getClass().getName() + " to " + target.getName());
+    }
+}

src/main/java/be/seeseepuff/pcinv/services/AssetService.java

@@ -12,6 +12,8 @@ import be.seeseepuff.pcinv.repositories.GenericAssetRepository;
 import be.seeseepuff.pcinv.repositories.WorkLogRepository;
 import jakarta.persistence.EntityManager;
 import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
+import org.modelmapper.ModelMapper;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -54,6 +56,30 @@ public class AssetService {
         return getRepositoryFor(genericAsset.getType()).findByAsset(genericAsset);
     }
 
+    /**
+     * Retrieves an asset by its QR code and duplicates the object.
+     *
+     * @param qr the QR code of the asset to retrieve
+     * @return the Asset associated with the given QR code, or null if no duplicate is found
+     */
+    @SneakyThrows
+    public Asset getAssetDuplicateByQr(long qr) {
+        var mapper = new ModelMapper();
+        var originalGenericAsset = genericRepository.findByQr(qr);
+        if (originalGenericAsset == null) {
+            throw new IllegalArgumentException("No asset found with QR code: " + qr);
+        }
+        var originalAsset = getRepositoryFor(originalGenericAsset.getType()).findByAsset(originalGenericAsset);
+
+        var genericAsset = mapper.map(originalGenericAsset, GenericAsset.class);
+        genericAsset.setId(0); // Reset ID to create a new instance
+        genericAsset.setQr(0);
+        var asset = mapper.map(originalAsset, originalAsset.getClass());
+        asset.setAsset(genericAsset);
+
+        return asset;
+    }
+
     /**
      * Retrieves all assets of a specific type.
      *

src/main/resources/templates/browse_type.html

@@ -14,6 +14,7 @@
             <td>
                 <a th:href="'/view/'+${a.getQr()}">View</a>
                 <a th:href="'/edit/'+${a.getQr()}">Edit</a>
+                <a th:href="'/duplicate/'+${a.getQr()}">Duplicate</a>
             </td>
         </tr>
     </table>

src/main/resources/templates/create_asset.html

@@ -1,7 +1,7 @@
 <body th:replace="~{fragments :: base(title='Create '+${descriptor.displayName}, content=~{::content})}">
 <div th:fragment="content">
 	<h2>Create a <span th:text="${descriptor.displayName}"></span></h2>
-	<form th:action="'/'+${action}+'/'+${asset != null ? asset.getQr() : descriptor.getType()}" method="post">
+	<form th:action="'/'+${(action == 'duplicate') ? 'create' : action}+'/'+${(asset != null && action != 'duplicate') ? asset.getQr() : descriptor.getType()}" method="post">
 		<div th:each="d : ${descriptors}">
 			<h2 th:text="${d.displayName}"></h2>
 			<table border="1" cellpadding="4">
@@ -17,7 +17,7 @@
 							<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}"/>
+						<input th:case="INTEGER" type="number" th:id="${d.asString(p)}" th:name="${d.asString(p)}" th:value="${(p.name == 'qr' && action == 'duplicate') ? null : p.getValue(asset)}" th:required="${p.required}"/>
 <!--						<input th:case="BOOLEAN" type="checkbox" th:id="${d.asString(p)}" th:name="${d.asString(p)}" th:value="true" th:checked="${asset != null ? p.getValue(asset) : p.defaultValue}"/>-->
 						<span th:case="BOOLEAN">
 							<input th:name="${d.asString(p)}" th:id="${d.asString(p)}+'-null'" type="radio" value="null" th:checked="${asset == null || (p.getValue(asset) == null)}">
@@ -50,7 +50,7 @@
 			</table>
 		</div>
 		<p>
-			<input th:if="${action == 'create'}" type="submit" value="Create">
+			<input th:if="${action == 'create' || action == 'duplicate'}" type="submit" value="Create">
 			<input th:if="${action == 'edit'}" type="submit" value="Save Changes">
 		</p>
 	</form>

src/main/resources/templates/view.html

@@ -15,7 +15,8 @@
     <ul th:if="${action == 'view'}">
       <li><a th:href="'/edit/'+${asset.getQr()}">Edit</a></li>
       <li><a th:href="'/delete/'+${asset.getQr()}">Delete</a></li>
-      <li><a th:href="'/create/'+${asset.getAsset().type}">Create another <span th:text="${descriptor.displayName}">Hard Drive</span> </a></li>
+      <li><a th:href="'/create/'+${asset.getAsset().type}">Create another <span th:text="${descriptor.displayName}">Hard Drive</span></a></li>
+      <li><a th:href="'/duplicate/'+${asset.getQr()}">Duplicate this <span th:text="${descriptor.displayName}">Hard Drive</span></a></li>
       <li><a th:href="'/browse/'+${descriptor.type}">Browse all <span th:text="${descriptor.pluralName}">Hard Drives</span></a></li>
     </ul>
     <ul th:if="${action == 'delete'}">