Reservation Management

enum EstadoReserva {
  pendiente,   // Awaiting confirmation
  confirmada,  // Confirmed by system
  cancelada,   // Cancelled by customer or restaurant
}

class Reserva {
  final String id;                  // Unique identifier
  final String mesaId;              // Table assignment
  final DateTime fechaHora;         // Reservation date and time
  final int numeroPersonas;         // Party size
  final int duracionMinutos;        // Duration (default: 60)
  EstadoReserva estado;             // Current status
  final String? contactoCliente;    // Customer email
  final String? nombreCliente;      // Customer name
  final String? telefonoCliente;    // Verified phone number
  final String? negocioId;          // Restaurant ID
}

final cubit = context.read<PantallaDuenoCubit>();
final reservas = await cubit.obtenerReservasDelNegocio(negocioId);

print('Total reservations: ${reservas.length}');

final mesas = await mesaRepositorio.obtenerMesasPorNegocio(negocioId);
final mesaIds = mesas.map((m) => m.id).toSet();

final todasReservas = await reservaRepositorio.obtenerReserva();
return todasReservas.where((r) => mesaIds.contains(r.mesaId)).toList();

// Confirming a reservation
void confirmar() {
  if (estado == EstadoReserva.cancelada) {
    throw Exception('Cannot confirm a cancelled reservation.');
  }
  if (estado == EstadoReserva.confirmada) {
    throw Exception('Reservation is already confirmed.');
  }
  estado = EstadoReserva.confirmada;
}

final success = await cubit.cancelarReservaAdmin(
  reservaId,
  motivo: 'Table unavailable due to maintenance',
);

if (success) {
  print('Reservation cancelled and customer notified');
}

<!-- Header with restaurant branding -->
<div style="background-color: #27AE60; padding: 30px;">
  <h1 style="color: white;">Reservation Confirmed</h1>
</div>

<!-- Content with reservation details -->
<div style="padding: 30px;">
  <table>
    <tr><td>👤 Name:</td><td>John Doe</td></tr>
    <tr><td>🏪 Restaurant:</td><td>La Cocina</td></tr>
    <tr><td>📍 Table:</td><td>Mesa 5</td></tr>
    <tr><td>📅 Date:</td><td>Friday, March 15, 2026</td></tr>
    <tr><td>🕐 Time:</td><td>19:00 hs</td></tr>
    <tr><td>👥 Guests:</td><td>4</td></tr>
  </table>
</div>

<!-- Footer -->
<div style="background-color: #f5f5f5;">
  <p>© 2026 Sistema de Reservas</p>
</div>

final metricas = await cubit.obtenerMetricasReservas(negocioId);

print('Total reservations: ${metricas['totalReservas']}');
print('Reservations today: ${metricas['reservasHoy']}');
print('This month: ${metricas['reservasMesActual']}');

// Group reservations by hour
Map<int, int> reservasPorHora = {};
for (var reserva in reservasActivas) {
  final hora = reserva.fechaHora.hour;
  reservasPorHora[hora] = (reservasPorHora[hora] ?? 0) + 1;
}

// Sort and get top 3
final horariosOrdenados = reservasPorHora.entries.toList()
  ..sort((a, b) => b.value.compareTo(a.value));

final horariosPico = horariosOrdenados.take(3).map((e) => {
  'hora': '${e.key.toString().padLeft(2, '0')}:00',
  'reservas': e.value,
}).toList();

class Reserva {
  final int duracionMinutos;
  
  Reserva({
    this.duracionMinutos = 60,
    // ...
  });
  
  DateTime get horaFin => fechaHora.add(Duration(minutes: duracionMinutos));
}

final negocio = negocio.copyWith(
  duracionPromedioMinutos: 90, // 1.5 hours
);

// Check if reservation A conflicts with reservation B
bool hasConflict(Reserva a, Reserva b) {
  if (a.mesaId != b.mesaId) return false;
  if (a.estado == EstadoReserva.cancelada || 
      b.estado == EstadoReserva.cancelada) return false;
  
  return a.fechaHora.isBefore(b.horaFin) && 
         b.fechaHora.isBefore(a.horaFin);
}

final allReservations = await cubit.obtenerReservasDelNegocio(negocioId);

final today = DateTime.now();
final startOfDay = DateTime(today.year, today.month, today.day);
final endOfDay = startOfDay.add(Duration(days: 1));

final todayReservations = allReservations.where((r) => 
  r.fechaHora.isAfter(startOfDay) && 
  r.fechaHora.isBefore(endOfDay)
).toList();

final confirmedReservations = allReservations.where((r) => 
  r.estado == EstadoReserva.confirmada
).toList();

final pendingReservations = allReservations.where((r) => 
  r.estado == EstadoReserva.pendiente
).toList();

final tableReservations = allReservations.where((r) => 
  r.mesaId == specificTableId
).toList();

reservas/
  {reservaId}/
    id: "reserva_abc123"
    mesaId: "mesa_xyz789"
    fechaHora: Timestamp(2026-03-15 19:00:00)
    numeroPersonas: 4
    duracionMinutos: 60
    estado: "confirmada"
    contactoCliente: "[email protected]"
    nombreCliente: "John Doe"
    telefonoCliente: "+54 9 261 123-4567"
    negocioId: "restaurant_xyz"