(untested!) added temp backup api scaffoldings before introducing autobackups and rotations

forms/backup_create.go

@@ -0,0 +1,76 @@
+package forms
+
+import (
+	"context"
+	"regexp"
+
+	validation "github.com/go-ozzo/ozzo-validation/v4"
+	"github.com/pocketbase/pocketbase/core"
+)
+
+var backupNameRegex = regexp.MustCompile(`^[a-z0-9_-]+\.zip$`)
+
+// BackupCreate is a request form for creating a new app backup.
+type BackupCreate struct {
+	app core.App
+	ctx context.Context
+
+	Name string `form:"name" json:"name"`
+}
+
+// NewBackupCreate creates new BackupCreate request form.
+func NewBackupCreate(app core.App) *BackupCreate {
+	return &BackupCreate{
+		app: app,
+		ctx: context.Background(),
+	}
+}
+
+// SetContext replaces the default form context with the provided one.
+func (form *BackupCreate) SetContext(ctx context.Context) {
+	form.ctx = ctx
+}
+
+// Validate makes the form validatable by implementing [validation.Validatable] interface.
+func (form *BackupCreate) Validate() error {
+	return validation.ValidateStruct(form,
+		validation.Field(
+			&form.Name,
+			validation.Length(1, 100),
+			validation.Match(backupNameRegex),
+			validation.By(form.checkUniqueName),
+		),
+	)
+}
+
+func (form *BackupCreate) checkUniqueName(value any) error {
+	v, _ := value.(string)
+
+	fsys, err := form.app.NewBackupsFilesystem()
+	if err != nil {
+		return err
+	}
+	defer fsys.Close()
+
+	fsys.SetContext(form.ctx)
+
+	if exists, err := fsys.Exists(v); err != nil || exists {
+		return validation.NewError("validation_backup_name_exists", "The backup file name is invalid or already exists.")
+	}
+
+	return nil
+}
+
+// Submit validates the form and creates the app backup.
+//
+// You can optionally provide a list of InterceptorFunc to further
+// modify the form behavior before creating the backup.
+func (form *BackupCreate) Submit(interceptors ...InterceptorFunc[string]) error {
+	if err := form.Validate(); err != nil {
+		return err
+	}
+
+	return runInterceptors(form.Name, func(name string) error {
+		return form.app.CreateBackup(form.ctx, name)
+	}, interceptors...)
+}