func CreateDashboardSnapshot(cmd *m.CreateDashboardSnapshotCommand) error {
	return inTransaction(func(sess *xorm.Session) error {

		// never
		var expires = time.Now().Add(time.Hour * 24 * 365 * 50)
		if cmd.Expires > 0 {
			expires = time.Now().Add(time.Second * time.Duration(cmd.Expires))
		}

		snapshot := &m.DashboardSnapshot{
			Name:      cmd.Name,
			Key:       cmd.Key,
			DeleteKey: cmd.DeleteKey,
			OrgId:     cmd.OrgId,
			UserId:    cmd.UserId,
			External:  cmd.External,
			Dashboard: cmd.Dashboard,
			Expires:   expires,
			Created:   time.Now(),
			Updated:   time.Now(),
		}

		_, err := sess.Insert(snapshot)
		cmd.Result = snapshot

		return err
	})
}

func CreateDashboardSnapshot(c *middleware.Context, cmd m.CreateDashboardSnapshotCommand) {
	if cmd.Name == "" {
		cmd.Name = "Unnamed snapshot"
	}

	if cmd.External {
		// external snapshot ref requires key and delete key
		if cmd.Key == "" || cmd.DeleteKey == "" {
			c.JsonApiErr(400, "Missing key and delete key for external snapshot", nil)
			return
		}

		cmd.OrgId = -1
		cmd.UserId = -1
		metrics.M_Api_Dashboard_Snapshot_External.Inc(1)
	} else {
		cmd.Key = util.GetRandomString(32)
		cmd.DeleteKey = util.GetRandomString(32)
		cmd.OrgId = c.OrgId
		cmd.UserId = c.UserId
		metrics.M_Api_Dashboard_Snapshot_Create.Inc(1)
	}

	if err := bus.Dispatch(&cmd); err != nil {
		c.JsonApiErr(500, "Failed to create snaphost", err)
		return
	}

	c.JSON(200, util.DynMap{
		"key":       cmd.Key,
		"deleteKey": cmd.DeleteKey,
		"url":       setting.ToAbsUrl("dashboard/snapshot/" + cmd.Key),
		"deleteUrl": setting.ToAbsUrl("api/snapshots-delete/" + cmd.DeleteKey),
	})
}