[#2599] added option to upload a backup file from the Admin UI

forms/backup_upload.go

@@ -0,0 +1,85 @@
+package forms
+
+import (
+	"context"
+
+	validation "github.com/go-ozzo/ozzo-validation/v4"
+	"github.com/pocketbase/pocketbase/core"
+	"github.com/pocketbase/pocketbase/forms/validators"
+	"github.com/pocketbase/pocketbase/tools/filesystem"
+)
+
+// BackupUpload is a request form for uploading a new app backup.
+type BackupUpload struct {
+	app core.App
+	ctx context.Context
+
+	File *filesystem.File `json:"file"`
+}
+
+// NewBackupUpload creates new BackupUpload request form.
+func NewBackupUpload(app core.App) *BackupUpload {
+	return &BackupUpload{
+		app: app,
+		ctx: context.Background(),
+	}
+}
+
+// SetContext replaces the default form upload context with the provided one.
+func (form *BackupUpload) SetContext(ctx context.Context) {
+	form.ctx = ctx
+}
+
+// Validate makes the form validatable by implementing [validation.Validatable] interface.
+func (form *BackupUpload) Validate() error {
+	return validation.ValidateStruct(form,
+		validation.Field(
+			&form.File,
+			validation.Required,
+			validation.By(validators.UploadedFileMimeType([]string{"application/zip"})),
+			validation.By(form.checkUniqueName),
+		),
+	)
+}
+
+func (form *BackupUpload) checkUniqueName(value any) error {
+	v, _ := value.(*filesystem.File)
+	if v == nil {
+		return nil // nothing to check
+	}
+
+	fsys, err := form.app.NewBackupsFilesystem()
+	if err != nil {
+		return err
+	}
+	defer fsys.Close()
+
+	fsys.SetContext(form.ctx)
+
+	if exists, err := fsys.Exists(v.OriginalName); err != nil || exists {
+		return validation.NewError("validation_backup_name_exists", "Backup file with the specified name already exists.")
+	}
+
+	return nil
+}
+
+// Submit validates the form and upload the backup file.
+//
+// You can optionally provide a list of InterceptorFunc to further
+// modify the form behavior before uploading the backup.
+func (form *BackupUpload) Submit(interceptors ...InterceptorFunc[*filesystem.File]) error {
+	if err := form.Validate(); err != nil {
+		return err
+	}
+
+	return runInterceptors(form.File, func(file *filesystem.File) error {
+		fsys, err := form.app.NewBackupsFilesystem()
+		if err != nil {
+			return err
+		}
+
+		fsys.SetContext(form.ctx)
+
+		return fsys.UploadFile(file, file.OriginalName)
+	}, interceptors...)
+}