import { useDriverStore, useLocationStore } from "@/store";
import { calculateDriverTimes, calculateRegion, generateMarkersFromData } from "@/lib/map";
import MapView, { Marker, PROVIDER_DEFAULT } from "react-native-maps";
import MapViewDirections from "react-native-maps-directions";
import tw from "twrnc";
import { useEffect, useState } from "react";
import { Driver, MarkerData } from "@/types/type";
import { icons } from "@/constants";
import { useFetch } from "@/lib/fetch";
import { ActivityIndicator, Text, View } from "react-native";

const Map = () => {
  const { data: drivers, loading, error } = useFetch<Driver[]>("/api/driver");
  const { userLongitude, userLatitude, destinationLatitude, destinationLongitude } = useLocationStore();
  const { selectedDriver, setDrivers } = useDriverStore();
  const [markers, setMarkers] = useState<MarkerData[]>([]);
  const region = calculateRegion({
    userLongitude, userLatitude, destinationLatitude, destinationLongitude,
  });
  useEffect(() => {
    if (Array.isArray(drivers)) {
      if (!userLatitude || !userLongitude) return;
      const newMarkers = generateMarkersFromData({ data: drivers, userLatitude, userLongitude, });
      setMarkers(newMarkers);
    }
  }, [drivers,userLatitude,userLongitude]);
  useEffect(() => {
    if (markers.length > 0 && destinationLatitude && destinationLongitude) {
      calculateDriverTimes({ markers, userLongitude, userLatitude, destinationLatitude, destinationLongitude }).then((drivers) => {
        setDrivers(drivers as MarkerData[]);
      });
    }
  }, [markers, destinationLatitude, destinationLongitude]);
  if (loading || !userLatitude || !userLongitude) {
    return (
      <View style={tw`flex justify-between items-center w-full`}>
        <ActivityIndicator size="small" color="#000" />
      </View>
    );
  }
  if (error) {
    return (
      <View style={tw`flex justify-between items-center w-full`}>
        <Text>Error:{error}</Text>
      </View>
    );
  }
  return (
    <MapView provider={PROVIDER_DEFAULT} style={tw`w-full h-full rounded-2xl `} tintColor="black" mapType="standard" showsPointsOfInterest={false} initialRegion={region} showsUserLocation={true} userInterfaceStyle="light" >
      {markers?.map((marker) => (
        <Marker key={marker.id}
          coordinate={{
            latitude: marker.latitude,
            longitude: marker.longitude,
          }}
          title={marker.title}
          image={selectedDriver === marker.id ? icons.selectedMarker : icons.marker}
        />
      ))}
      {destinationLatitude && destinationLongitude && (
        <>
        <Marker key="destination" coordinate={{latitude:destinationLatitude,longitude:destinationLongitude}} title="Destination" image={icons.pin} />
        <MapViewDirections origin={{latitude:userLatitude!,longitude:userLongitude!,}} destination={{latitude:destinationLatitude,longitude:destinationLongitude,}} apikey={process.env.EXPO_PUBLIC_GOOGLE_API_KEY!} strokeColor="#0286ff" strokeWidth={2} />
        </>
      )}
    </MapView>
  )
}

export default Map;