implement user triggered backups

app/app.go

@@ -35,6 +35,8 @@ func Run() {
 	router.GET("/config/nets", routes.HandleGETConfigNetsFragment)
 	router.GET("/config/devices", routes.HandleGETConfigDevicesFragment)
 	router.GET("/config/boot", routes.HandleGETConfigBootFragment)
+	router.GET("/backups", routes.HandleGETBackups)
+	router.GET("/backups/backups", routes.HandleGETBackupsFragment)
 	router.GET("/login", routes.HandleGETLogin)
 	router.GET("/settings", routes.HandleGETSettings)
 

app/routes/backups.go

@@ -0,0 +1,110 @@
+package routes
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"proxmoxaas-dashboard/app/common"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-viper/mapstructure/v2"
+)
+
+type InstanceBackup struct {
+	Volid         string `json:"volid"`
+	Notes         string `json:"notes"`
+	Size          int64  `json:"size"`
+	CTime         int64  `json:"ctime"`
+	SizeFormatted string
+	TimeFormatted string
+}
+
+func HandleGETBackups(c *gin.Context) {
+	auth, err := common.GetAuth(c)
+	if err == nil {
+		vm_path, err := common.ExtractVMPath(c)
+		if err != nil {
+			common.HandleNonFatalError(c, err)
+		}
+
+		backups, err := GetInstanceBackups(vm_path, auth)
+		if err != nil {
+			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance backups: %s", err.Error()))
+		}
+
+		config, err := GetInstanceConfig(vm_path, auth) // only used for the VM's name
+		if err != nil {
+			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance config: %s", err.Error()))
+		}
+
+		log.Printf("%+v", backups)
+
+		c.HTML(http.StatusOK, "html/backups.html", gin.H{
+			"global":  common.Global,
+			"page":    "backups",
+			"backups": backups,
+			"config":  config,
+		})
+	} else {
+		c.Redirect(http.StatusFound, "/login")
+	}
+}
+
+func HandleGETBackupsFragment(c *gin.Context) {
+	auth, err := common.GetAuth(c)
+	if err == nil { // user should be authed, try to return index with population
+		vm_path, err := common.ExtractVMPath(c)
+		if err != nil {
+			common.HandleNonFatalError(c, err)
+		}
+
+		backups, err := GetInstanceBackups(vm_path, auth)
+		if err != nil {
+			common.HandleNonFatalError(c, fmt.Errorf("error encountered getting instance backups: %s", err.Error()))
+		}
+
+		c.Header("Content-Type", "text/plain")
+		common.TMPL.ExecuteTemplate(c.Writer, "html/backups-backups.go.tmpl", gin.H{
+			"backups": backups,
+		})
+		c.Status(http.StatusOK)
+	} else { // return 401
+		c.Status(http.StatusUnauthorized)
+	}
+}
+
+func GetInstanceBackups(vm common.VMPath, auth common.Auth) ([]InstanceBackup, error) {
+	backups := []InstanceBackup{}
+	path := fmt.Sprintf("/cluster/%s/%s/%s/backup", vm.Node, vm.Type, vm.VMID)
+	ctx := common.RequestContext{
+		Cookies: map[string]string{
+			"username":            auth.Username,
+			"PVEAuthCookie":       auth.Token,
+			"CSRFPreventionToken": auth.CSRF,
+		},
+	}
+	body := []any{}
+	res, code, err := common.RequestGetAPI(path, ctx, &body)
+	if err != nil {
+		return backups, err
+	}
+	if code != 200 {
+		return backups, fmt.Errorf("request to %s resulted in %+v", path, res)
+	}
+
+	err = mapstructure.Decode(body, &backups)
+	if err != nil {
+		return backups, err
+	}
+
+	for i := range backups {
+		size, prefix := common.FormatNumber(backups[i].Size, 1024)
+		backups[i].SizeFormatted = fmt.Sprintf("%.3g %sB", size, prefix)
+
+		t := time.Unix(backups[i].CTime, 0)
+		backups[i].TimeFormatted = t.Format("02-01-06 15:04:05")
+	}
+
+	return backups, nil
+}