[API] Extend times API (#9200)

Extensively extend the times API.

close #8833; close #8513; close #8559

models/migrations/v116.go

@@ -0,0 +1,30 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package migrations
+
+import (
+	"code.gitea.io/gitea/models"
+
+	"xorm.io/xorm"
+)
+
+func extendTrackedTimes(x *xorm.Engine) error {
+	sess := x.NewSession()
+	defer sess.Close()
+
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+
+	if _, err := sess.Exec("DELETE FROM tracked_time WHERE time IS NULL"); err != nil {
+		return err
+	}
+
+	if err := sess.Sync2(new(models.TrackedTime)); err != nil {
+		return err
+	}
+
+	return sess.Commit()
+}