package cn.flightfeather.thirdappmodule.activity;

import android.content.Intent;
import android.graphics.Point;
import android.location.Location;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;

import com.amap.api.location.AMapLocationClient;
import com.amap.api.location.AMapLocationClientOption;
import com.amap.api.maps.AMap;
import com.amap.api.maps.CameraUpdateFactory;
import com.amap.api.maps.MapView;
import com.amap.api.maps.model.BitmapDescriptorFactory;
import com.amap.api.maps.model.CameraPosition;
import com.amap.api.maps.model.LatLng;
import com.amap.api.maps.model.Marker;
import com.amap.api.maps.model.MarkerOptions;
import com.amap.api.maps.model.MyLocationStyle;

import cn.flightfeather.thirdappmodule.R;

/**
 * @author riku
 * Date: 2019/8/1
 * 修改场景位置
 */
public class MapActivity extends AppCompatActivity implements View.OnClickListener,AMap.OnMyLocationChangeListener {

    //定位
    //AMap是地图控制器对象
    private AMap aMap;
    //MapView时地图容器
    private MapView mapView;

    private TextView TV_start_location;
    private AMapLocationClient mLocationClient = null;
    private AMapLocationClientOption mLocationOption = null;
    private double latCurrent =0;
    private double lngCurrent =0;
    private boolean firstMove = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_map);

        initUI();
        initMap(savedInstanceState);
        initLocation();

        TV_start_location = (TextView) findViewById(R.id.TV_start_location);
        TV_start_location.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (latCurrent!=0&&lngCurrent!=0){
                    Intent intent = new Intent();
                    intent.putExtra("Latitude",latCurrent);
                    intent.putExtra("Longitude",lngCurrent);
                    setResult(RESULT_OK,intent);
                    finish();
                }
            }
        });


    }
    //初始化地图
    private void initMap(Bundle savedInstanceState) {
        mapView.onCreate(savedInstanceState);

        if(aMap == null){
            aMap = mapView.getMap();
            aMap.setRenderFps(60);
            aMap.getUiSettings().setZoomControlsEnabled(false);
            aMap.getUiSettings().setScaleControlsEnabled(true);

            aMap.setOnCameraChangeListener(new AMap.OnCameraChangeListener() {
                @Override
                public void onCameraChange(CameraPosition cameraPosition) {
                    latCurrent = cameraPosition.target.latitude;
                    lngCurrent = cameraPosition.target.longitude;

                }

                @Override
                public void onCameraChangeFinish(CameraPosition cameraPosition) {
                    latCurrent = cameraPosition.target.latitude;
                    lngCurrent = cameraPosition.target.longitude;

                }
            });

            aMap.setOnMapLoadedListener(new AMap.OnMapLoadedListener() {
                @Override
                public void onMapLoaded() {
                    addMarkerInScreenCenter(null);
                }
            });
        }
    }

    private void initUI(){
        mapView = (MapView) findViewById(R.id.MV_map);
        ((TextView)findViewById(R.id.actionbar_title)).setText("定位");
        findViewById(R.id.img_left).setOnClickListener(this);
        findViewById(R.id.img_right).setVisibility(View.GONE);
        findViewById(R.id.spinner_topclass_task).setVisibility(View.GONE);
    }

    //在屏幕中心添加一个固定的marker
    private void addMarkerInScreenCenter(LatLng locationLatLng) {
        LatLng latLng = aMap.getCameraPosition().target;
        Point screenPosition = aMap.getProjection().toScreenLocation(latLng);
        Marker locationMarker = aMap.addMarker(new MarkerOptions()
                .anchor(0.5f, 0.5f)
                .icon(BitmapDescriptorFactory.fromResource(R.drawable.purple_pin)));
        //设置Marker在屏幕上,不跟随地图移动
        locationMarker.setPositionByPixels(screenPosition.x, screenPosition.y);
        locationMarker.setZIndex(1);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        aMap.setMyLocationEnabled(false);
        mapView.onDestroy();
    }


    @Override
    public void onResume() {
        super.onResume();
        //在activity执行onResume时执行mMapView.onResume ()，重新绘制加载地图
        mapView.onResume();

        initLocation();
    }

    @Override
    public void onPause() {
        super.onPause();
        //在activity执行onPause时执行mMapView.onPause ()，暂停地图的绘制
        aMap.setMyLocationEnabled(false);
        mapView.onPause();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        //在activity执行onSaveInstanceState时执行mMapView.onSaveInstanceState (outState)，保存地图当前的状态
        mapView.onSaveInstanceState(outState);
    }

    //初始化位置
    public void initLocation() {
        MyLocationStyle myLocationStyle;
        myLocationStyle = new MyLocationStyle();//初始化定位蓝点样式类myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE);//连续定位、且将视角移动到地图中心点，定位点依照设备方向旋转，并且会跟随设备移动。（1秒1次定位）如果不设置myLocationType，默认也会执行此种模式。
        //   myLocationStyle.interval(2000); //设置连续定位模式下的定位间隔，只在连续定位模式下生效，单次定位模式下不会生效。单位为毫秒。
        myLocationStyle.showMyLocation(true);
        myLocationStyle.radiusFillColor(getResources().getColor(R.color.transparent));
        myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE_NO_CENTER);//连续定位、蓝点不会移动到地图中心点，定位点依照设备方向旋转，并且蓝点会跟随设备移动
        aMap.setMyLocationStyle(myLocationStyle);//设置定位蓝点的Style
        aMap.getUiSettings().setMyLocationButtonEnabled(false);//设置默认定位按钮是否显示，非必需设置。
        aMap.setMyLocationEnabled(true);// 设置为true表示启动显示定位蓝点，false表示隐藏定位蓝点并不进行定位，默认是false。
        aMap.setOnMyLocationChangeListener(this);
    }


    @Override
    public void onClick(View v) {
        //返回键
        if (v.getId() == R.id.img_left){
            this.finish();
        }
    }

    @Override
    public void onMyLocationChange(Location location) {
        if (location!=null&&firstMove){
            LatLng desLatLng = new LatLng(location.getLatitude(),location.getLongitude());
            aMap.moveCamera(CameraUpdateFactory.newLatLngZoom(desLatLng, 15f));
            firstMove = false;
        }
    }
}