Add ability to remove devices

data.go

@@ -1,5 +1,7 @@
 package main
 
+import "gitea.seeseepuff.be/seeseemelk/mysqlite"
+
 func (a *App) GetAllBrands() ([]string, error) {
 	var brands []string
 	var err error
@@ -59,3 +61,17 @@ func (a *App) GetTotalRamCapacity() (int, error) {
 	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
+}

main.go

@@ -67,6 +67,8 @@ func main() {
 	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)

templates/delete.gohtml

@@ -0,0 +1,9 @@
+{{- /*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}}

templates/device.gohtml

@@ -30,5 +30,6 @@
 		{{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}}

views.go

@@ -225,15 +225,7 @@ func (a *App) postCreateDeviceRam(c *gin.Context, qr int) error {
 		return err
 	}
 
-	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
-	}
+	err = a.DeleteAsset(tx, qr)
 
 	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")).
@@ -306,6 +298,46 @@ func (a *App) getBrowse(c *gin.Context) {
 	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 ""