Searching for availability by room

internal/repository/dbrepo/postgres.go

@@ -64,3 +64,26 @@ func (m *postgresDBRepo) InsertRoomRestriction(r models.RoomRestriction) error {
 
 	return nil
 }
+
+// SearchAvailabilityByDates returns true if availability exists for roomID, and false if no availability
+func (m *postgresDBRepo) SearchAvailabilityByDates(start, end time.Time, roomID int) (bool, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	var numRows int
+	stmt := `select count(id) from room_restrictions
+             where room_id = $1 and
+             $2 < end_date and $3> start_date`
+
+	row := m.DB.QueryRowContext(ctx, stmt, roomID, start, end)
+	err := row.Scan(&numRows)
+	if err != nil {
+		return false, err
+	}
+
+	if numRows == 0 {
+		return true, nil
+	}
+
+	return false, nil
+}