parseStrings static method

List<List<Seat?>> parseStrings(List<String> stringMap, { int deckIndex = 0, String seatNoBuilder(int row, int col, int deck)?, })

Parses a list of strings into a 2D matrix of List<List<Seat?>>.

Implementation

static List<List<Seat?>> parseStrings(
  List<String> stringMap, {
  int deckIndex = 0,
  String Function(int row, int col, int deck)? seatNoBuilder,
}) {
  final matrix = <List<Seat?>>[];

  for (int r = 0; r < stringMap.length; r++) {
    final line = stringMap[r].trimRight();
    final rowSeats = <Seat?>[];
    int seatColIndex = 0;

    for (int c = 0; c < line.length; c++) {
      final char = line[c].toLowerCase();

      if (char == '_' || char == ' ' || char == '-') {
        rowSeats.add(null);
        continue;
      }

      final seatId = '${deckIndex}_${r + 1}_${c + 1}';
      final seatLabel = seatNoBuilder != null
          ? seatNoBuilder(r + 1, seatColIndex + 1, deckIndex)
          : defaultSeatLabel(r, seatColIndex, deckIndex);

      seatColIndex++;

      SeatStatus status = SeatStatus.available;
      SeatType type = SeatType.standard;

      switch (char) {
        case 's':
        case '1':
        case 'a':
          status = SeatStatus.available;
          type = SeatType.standard;
          break;
        case 'v':
          status = SeatStatus.available;
          type = SeatType.vip;
          break;
        case 'l':
          status = SeatStatus.available;
          type = SeatType.sleeper;
          break;
        case 'u':
          status = SeatStatus.available;
          type = SeatType.sleeper;
          break;
        case 'm':
          status = SeatStatus.available;
          type = SeatType.semiSleeper;
          break;
        case 'b':
        case 'x':
          status = SeatStatus.booked;
          type = SeatType.standard;
          break;
        case 'r':
          status = SeatStatus.reserved;
          type = SeatType.standard;
          break;
        case 'd':
          status = SeatStatus.disabled;
          type = SeatType.standard;
          break;
        case 'f':
          status = SeatStatus.femaleOnly;
          type = SeatType.standard;
          break;
        default:
          status = SeatStatus.available;
          type = SeatType.standard;
          break;
      }

      rowSeats.add(
        Seat(
          id: seatId,
          label: seatLabel,
          row: r,
          column: c,
          deckIndex: deckIndex,
          status: status,
          type: type,
        ),
      );
    }

    matrix.add(List.unmodifiable(rowSeats));
  }

  return List.unmodifiable(matrix);
}