import React, {createContext, useState, useEffect} from 'react';
import Geolocation from 'react-native-geolocation-service';
import {Platform, PermissionsAndroid} from 'react-native';

export const MapContext = createContext();

// //위치 정보 수집 권한 요청
async function requestPermission() {
  try {
    if (Platform.OS === 'ios') {
      return await Geolocation.requestAuthorization('always');
    }
    if (Platform.OS === 'android') {
      return await PermissionsAndroid.request(
        PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,
      );
    }
  } catch (e) {
    console.log(e);
  }
}

export default function MapProvider({children}) {
  //현위치, marker 위치 검색내용 state
  const [location, setLocation] = useState();
  const [searchQuery, setSearchQuery] = useState(null);

  //backedn 받아온 node
  const [startPoint, setStartPoint] = useState();
  const [endPoint, setEndPoint] = useState({latitude: 0, longitude: 0});
  const [nodes, setNodes] = useState([]);

  // 거리 환산
  const [km, setKm] = useState();

  //현위치 받아오기기

  useEffect(() => {
    requestPermission().then(result => {
      console.log({result});
      if (result === 'granted') {
        Geolocation.watchPosition(
          position => {
            setLocation(position.coords);
          },
          error => {
            console.log(error);
          },
          {
            fastestInterval: 1000,
          },
        );
      }
    });
  }, []);

  //두좌표 거리 구하는 함수

  //목적지 send
  const onQuery = query => {
    const {latitude, longitude} = location;
  };

  const value = React.useMemo(() => ({
    onQuery,
    location,
    searchQuery,
    setSearchQuery,
    startPoint,
    endPoint,
    nodes,
    setNodes,
    km,
  }));

  return <MapContext.Provider value={value}>{children}</MapContext.Provider>;
}