// ── Activity ──────────────────────────────────────────────────────────────────

class BookingActivity {
  final int id;
  final String name;

  const BookingActivity({required this.id, required this.name});

  factory BookingActivity.fromJson(Map<String, dynamic> json) =>
      BookingActivity(
        id: json['pk_i_id'] ?? 0,
        name: json['s_name'] ?? '',
      );
}

// ── Grid ──────────────────────────────────────────────────────────────────────

class BookingCell {
  final String raw;
  const BookingCell(this.raw);

  bool get isEmpty => raw.isEmpty;
  bool get isPaid => raw.isNotEmpty && raw.endsWith('+');
  bool get isBooked => raw.isNotEmpty;

  int? get memberId {
    final m = RegExp(r'^(\d+)\.').firstMatch(raw);
    return m != null ? int.tryParse(m.group(1)!) : null;
  }

  int? get familyId {
    final m = RegExp(r'\.(\d+)[+\-]?$').firstMatch(raw);
    return m != null ? int.tryParse(m.group(1)!) : null;
  }
}

class BookingRow {
  final int slotIndex;
  final String timeLabel;
  final List<BookingCell> cells; // one per court

  const BookingRow({
    required this.slotIndex,
    required this.timeLabel,
    required this.cells,
  });
}

class BookingGrid {
  final List<BookingRow> rows;
  final List<String> courtTitles; // ["01", "02", ...]
  final String activityName;
  final int light;
  final int extra;
  final String? celebrations;

  const BookingGrid({
    required this.rows,
    required this.courtTitles,
    required this.activityName,
    required this.light,
    required this.extra,
    this.celebrations,
  });

  factory BookingGrid.fromJson(Map<String, dynamic> json) {
    final aoColumns = json['aoColumns'] as List<dynamic>? ?? [];
    final aaData = json['aaData'] as List<dynamic>? ?? [];

    final courtTitles = aoColumns
        .skip(1)
        .map((c) => (c as Map<String, dynamic>)['sTitle'] as String? ?? '')
        .toList();

    final rows = aaData.map((rowData) {
      final row = rowData as List<dynamic>;
      final firstCell = row[0] as String? ?? '';
      final idMatch = RegExp(r'id="(\d+)"').firstMatch(firstCell);
      final slotIndex = idMatch != null ? int.parse(idMatch.group(1)!) : 0;
      final timeMatch = RegExp(r'>([^<]+)<').firstMatch(firstCell);
      final timeLabel = timeMatch?.group(1) ?? firstCell;

      final cells = row
          .skip(1)
          .map((c) => BookingCell(c as String? ?? ''))
          .toList();

      return BookingRow(slotIndex: slotIndex, timeLabel: timeLabel, cells: cells);
    }).toList();

    final ac = json['ac'] as Map<String, dynamic>? ?? {};

    return BookingGrid(
      rows: rows,
      courtTitles: courtTitles,
      activityName: ac['s_name'] as String? ?? '',
      light: (json['light'] as num?)?.toInt() ?? 0,
      extra: (json['extra'] as num?)?.toInt() ?? 0,
      celebrations: json['celebrations'] as String?,
    );
  }
}

// ── Booking detail (single cell) ──────────────────────────────────────────────

class TicketLine {
  final String concepto;
  final double precio;

  const TicketLine({required this.concepto, required this.precio});

  factory TicketLine.fromJson(Map<String, dynamic> json) => TicketLine(
        concepto: json['concepto'] ?? '',
        precio: (json['precio'] as num?)?.toDouble() ?? 0,
      );
}

class TicketPreview {
  final String concepto;
  final double base;
  final double iva;
  final double total;
  final List<TicketLine> lines;

  const TicketPreview({
    required this.concepto,
    required this.base,
    required this.iva,
    required this.total,
    required this.lines,
  });

  factory TicketPreview.fromJson(Map<String, dynamic> json) => TicketPreview(
        concepto: json['concepto'] ?? '',
        base: (json['base'] as num?)?.toDouble() ?? 0,
        iva: (json['iva'] as num?)?.toDouble() ?? 0,
        total: (json['total'] as num?)?.toDouble() ?? 0,
        lines: (json['lines'] as List<dynamic>? ?? [])
            .map((l) => TicketLine.fromJson(l as Map<String, dynamic>))
            .toList(),
      );
}

class BookingDetail {
  final int id;
  final int memberId;
  final int familyId;
  final String date;
  final bool paid;
  final TicketPreview? ticket;

  const BookingDetail({
    required this.id,
    required this.memberId,
    required this.familyId,
    required this.date,
    required this.paid,
    this.ticket,
  });

  factory BookingDetail.fromJson(Map<String, dynamic> json) {
    final book = json['book'] as Map<String, dynamic>? ?? {};
    final ticketJson = json['ticket'] as Map<String, dynamic>?;
    return BookingDetail(
      id: book['pk_i_id'] ?? 0,
      memberId: book['fk_i_member_id'] ?? 0,
      familyId: book['fk_i_family'] ?? 1,
      date: book['d_date'] ?? '',
      paid: (book['b_paid'] ?? 0) == 1,
      ticket: ticketJson != null ? TicketPreview.fromJson(ticketJson) : null,
    );
  }
}