/**
 * ETA Progress Bar
 * ERP Transportistas
 * Sprint S7 - TASK-007
 *
 * Visual progress indicator for trip ETA.
 */

import { TipoEventoTracking } from '../types';

interface ETAProgressBarProps {
  progreso: number;
  etaOriginal: string;
  etaActual: string;
  ultimoEvento?: TipoEventoTracking;
}

const etapaLabels: Record<TipoEventoTracking, string> = {
  [TipoEventoTracking.POSICION]: 'En ruta',
  [TipoEventoTracking.SALIDA]: 'Salida',
  [TipoEventoTracking.ARRIBO_ORIGEN]: 'En origen',
  [TipoEventoTracking.INICIO_CARGA]: 'Cargando',
  [TipoEventoTracking.FIN_CARGA]: 'Carga lista',
  [TipoEventoTracking.ARRIBO_DESTINO]: 'En destino',
  [TipoEventoTracking.INICIO_DESCARGA]: 'Descargando',
  [TipoEventoTracking.FIN_DESCARGA]: 'Descarga lista',
  [TipoEventoTracking.ENTREGA_POD]: 'Entregado',
  [TipoEventoTracking.DESVIO]: 'Desvío',
  [TipoEventoTracking.PARADA]: 'Detenido',
  [TipoEventoTracking.INCIDENTE]: 'Incidente',
  [TipoEventoTracking.GPS_POSICION]: 'En ruta',
  [TipoEventoTracking.GEOCERCA_ENTRADA]: 'Entrando zona',
  [TipoEventoTracking.GEOCERCA_SALIDA]: 'Saliendo zona',
};

export function ETAProgressBar({
  progreso,
  etaOriginal,
  etaActual,
  ultimoEvento,
}: ETAProgressBarProps) {
  const etaOriginalDate = new Date(etaOriginal);
  const etaActualDate = new Date(etaActual);
  const diferenciaMinutos = Math.round(
    (etaActualDate.getTime() - etaOriginalDate.getTime()) / 60000
  );

  const getStatusColor = () => {
    if (diferenciaMinutos <= 0) return 'bg-green-500';
    if (diferenciaMinutos <= 30) return 'bg-yellow-500';
    return 'bg-red-500';
  };

  const getStatusText = () => {
    if (diferenciaMinutos <= 0) return 'A tiempo';
    if (diferenciaMinutos <= 30) return `+${diferenciaMinutos} min`;
    const horas = Math.floor(diferenciaMinutos / 60);
    const mins = diferenciaMinutos % 60;
    return horas > 0 ? `+${horas}h ${mins}m` : `+${mins} min`;
  };

  const milestones = [
    { label: 'Salida', position: 0 },
    { label: 'Carga', position: 25 },
    { label: 'En ruta', position: 50 },
    { label: 'Descarga', position: 75 },
    { label: 'POD', position: 100 },
  ];

  return (
    <div className="space-y-2">
      {/* Status row */}
      <div className="flex items-center justify-between">
        <div className="flex items-center gap-2">
          <span className="text-sm font-medium text-gray-700">Progreso:</span>
          {ultimoEvento && (
            <span className="rounded-full bg-blue-100 px-2 py-0.5 text-xs font-medium text-blue-700">
              {etapaLabels[ultimoEvento] || ultimoEvento}
            </span>
          )}
        </div>
        <div className="flex items-center gap-2">
          <span
            className={`rounded-full px-2 py-0.5 text-xs font-medium ${
              diferenciaMinutos <= 0
                ? 'bg-green-100 text-green-700'
                : diferenciaMinutos <= 30
                ? 'bg-yellow-100 text-yellow-700'
                : 'bg-red-100 text-red-700'
            }`}
          >
            {getStatusText()}
          </span>
        </div>
      </div>

      {/* Progress bar */}
      <div className="relative">
        <div className="h-3 overflow-hidden rounded-full bg-gray-200">
          <div
            className={`h-full transition-all duration-500 ${getStatusColor()}`}
            style={{ width: `${Math.min(progreso, 100)}%` }}
          />
        </div>

        {/* Milestone markers */}
        <div className="absolute inset-0 flex items-center">
          {milestones.map((milestone, index) => (
            <div
              key={milestone.label}
              className="absolute flex flex-col items-center"
              style={{
                left: `${milestone.position}%`,
                transform: 'translateX(-50%)',
              }}
            >
              <div
                className={`h-3 w-3 rounded-full border-2 ${
                  progreso >= milestone.position
                    ? 'border-white bg-white'
                    : 'border-gray-400 bg-gray-200'
                }`}
              />
            </div>
          ))}
        </div>
      </div>

      {/* Milestone labels */}
      <div className="relative h-4">
        {milestones.map((milestone) => (
          <div
            key={`label-${milestone.label}`}
            className="absolute text-xs text-gray-500"
            style={{
              left: `${milestone.position}%`,
              transform: 'translateX(-50%)',
            }}
          >
            {milestone.label}
          </div>
        ))}
      </div>

      {/* ETA comparison */}
      <div className="flex items-center justify-between text-xs text-gray-500">
        <div>
          <span className="text-gray-400">ETA Original: </span>
          <span className="font-medium text-gray-600">
            {etaOriginalDate.toLocaleString('es-MX', {
              dateStyle: 'short',
              timeStyle: 'short',
            })}
          </span>
        </div>
        <div>
          <span className="text-gray-400">ETA Actual: </span>
          <span className={`font-medium ${diferenciaMinutos > 0 ? 'text-red-600' : 'text-green-600'}`}>
            {etaActualDate.toLocaleString('es-MX', {
              dateStyle: 'short',
              timeStyle: 'short',
            })}
          </span>
        </div>
      </div>
    </div>
  );
}