import { useEffect } from "react";
import { MapContainer, TileLayer, Marker, Popup, useMap } from "react-leaflet";
import L from "leaflet";
import type { MeterWithCoords } from "../../api/analytics";
import "leaflet/dist/leaflet.css";

// Fix Leaflet default icon issue
delete (L.Icon.Default.prototype as any)._getIconUrl;
L.Icon.Default.mergeOptions({
  iconRetinaUrl: "https://unpkg.com/leaflet@1.9.4/dist/images/marker-icon-2x.png",
  iconUrl: "https://unpkg.com/leaflet@1.9.4/dist/images/marker-icon.png",
  shadowUrl: "https://unpkg.com/leaflet@1.9.4/dist/images/marker-shadow.png",
});

function FitBounds({ meters }: { meters: MeterWithCoords[] }) {
  const map = useMap();

  useEffect(() => {
    if (meters.length > 0) {
      try {
        const bounds = L.latLngBounds(
          meters.map((m) => [Number(m.lat), Number(m.lng)] as L.LatLngTuple)
        );
        map.fitBounds(bounds, { padding: [50, 50], maxZoom: 15 });
      } catch (e) {
        console.error("Error fitting bounds:", e);
      }
    }
  }, [meters, map]);

  return null;
}

interface MapComponentsProps {
  meters: MeterWithCoords[];
}

export default function MapComponents({ meters }: MapComponentsProps) {
  const defaultCenter: [number, number] = meters.length > 0
    ? [Number(meters[0].lat), Number(meters[0].lng)]
    : [32.4724, -116.9498];

  return (
    <MapContainer
      center={defaultCenter}
      zoom={12}
      style={{ height: "100%", width: "100%" }}
      scrollWheelZoom={true}
    >
      <TileLayer
        attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>'
        url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
      />
      {meters.length > 0 && <FitBounds meters={meters} />}
      {meters.map((meter) => (
        <Marker
          key={meter.id}
          position={[Number(meter.lat), Number(meter.lng)]}
        >
          <Popup>
            <div className="min-w-[160px]">
              <p className="font-bold">{meter.name || meter.serial_number}</p>
              <p className="text-sm">Serial: {meter.serial_number}</p>
              <p className="text-sm">Proyecto: {meter.project_name || "N/A"}</p>
              <p className="text-sm">
                Estado:{" "}
                <span className={meter.status === "active" ? "text-green-600" : "text-red-600"}>
                  {meter.status === "active" ? "Activo" : "Inactivo"}
                </span>
              </p>
              {meter.last_reading != null && (
                <p className="text-sm">Lectura: {Number(meter.last_reading).toFixed(2)} m³</p>
              )}
            </div>
          </Popup>
        </Marker>
      ))}
    </MapContainer>
  );
}