Stricter datetime input

datapoint.go

@@ -120,8 +120,12 @@ func (dp Datapoint) Update() (err error) { // {{{
 } // }}}
 
 func DatapointAdd[T any](name string, value T) (err error) { // {{{
-	row := service.Db.Conn.QueryRow(`SELECT id, datatype FROM datapoint WHERE name=$1`, name)
+	type dpRequest = struct {
+		ID    int
+		value any
+	}
 
+	row := service.Db.Conn.QueryRow(`SELECT id, datatype FROM datapoint WHERE name=$1`, name)
 	var dpID int
 	var dpType DatapointType
 
@@ -140,13 +144,21 @@ func DatapointAdd[T any](name string, value T) (err error) { // {{{
 	case STRING:
 		_, err = service.Db.Conn.Exec(`INSERT INTO datapoint_value(datapoint_id, value_string) VALUES($1, $2)`, dpID, value)
 	case DATETIME:
-		_, err = service.Db.Conn.Exec(`INSERT INTO datapoint_value(datapoint_id, value_datetime) VALUES($1, $2)`, dpID, value)
+		// Time value is required to be a RFC 3339 formatted time string
+		var t time.Time
+		valueStr, ok := any(value).([]byte)
+		if !ok {
+			return werr.New("DATETIME value not a string").WithData(dpRequest{dpID, value})
+		}
+		t, err = stringToTime(string(valueStr))
+		if err != nil {
+			return werr.Wrap(err).WithData(dpRequest{dpID, value}).Log()
+		}
+
+		_, err = service.Db.Conn.Exec(`INSERT INTO datapoint_value(datapoint_id, value_datetime) VALUES($1, $2)`, dpID, t)
 	}
 	if err != nil {
-		err = werr.Wrap(err).WithData(struct {
-			ID    int
-			value any
-		}{dpID, value})
+		err = werr.Wrap(err).WithData(dpRequest{dpID, value})
 		return
 	}