package com.example.cosmosclient.services;

import android.Manifest;
import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.support.annotation.Nullable;
import android.support.annotation.RequiresApi;
import android.support.v4.app.ActivityCompat;
import android.util.Log;

import com.example.cosmosclient.R;
import com.example.cosmosclient.app.Cosmos;
import com.example.cosmosclient.entities.Group;
import com.example.cosmosclient.entities.GroupListResponse;
import com.example.cosmosclient.entities.RequestList;
import com.example.cosmosclient.entities.jsons.GroupJson;
import com.example.cosmosclient.resources.GroupsRest;

import java.io.FileDescriptor;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.TimeZone;
import java.util.Timer;
import java.util.TimerTask;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.jackson.JacksonConverterFactory;


public class CosmosBackgroundService extends IntentService implements LocationListener {
    private Context context;
    private LocationManager locationManager;
    private static final int MinTime = 1000;/*最小時間間隔*/
    private static final float MinDistance = 1;/*最小距離間隔*/
    private boolean isServiceRunning = false; //サービスが起動しているかを確認
    private String TAG = CosmosBackgroundService.class.getSimpleName();
    private List<Notification> notifications =null;


    public CosmosBackgroundService() {
        super("CosmosBackgroundService");
        Log.d(TAG, "Constructor");
    }

    @Override
    public void setIntentRedelivery(boolean enabled) {
        Log.d(TAG, "setIntentRedelivery");
        super.setIntentRedelivery(enabled);
    }

    @Override
    public void onCreate() {
        Log.d(TAG, "onCreate");
        super.onCreate();
        context = getApplicationContext();
        // LocationManager インスタンス生成
        locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    }

    @Override
    public void onStart(@Nullable Intent intent, int startId) {
        Log.d(TAG, "onStart");
        super.onStart(intent, startId);
    }

    @RequiresApi(api = Build.VERSION_CODES.O)
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG, "onStartCommand");
        if(!isServiceRunning) {
            int requestCode = 0;
            String channelId = "default";
            String title = context.getString(R.string.app_name);
            PendingIntent pendingIntent =
                    PendingIntent.getActivity(context, requestCode,
                            intent, PendingIntent.FLAG_UPDATE_CURRENT);
            // ForegroundにするためNotificationが必要、Contextを設定
            NotificationManager notificationManager =
                    (NotificationManager) context.
                            getSystemService(Context.NOTIFICATION_SERVICE);
            // Notification　Channel 設定
            NotificationChannel channel = new NotificationChannel(
                    channelId, title, NotificationManager.IMPORTANCE_DEFAULT);
            channel.setDescription("Silent Notification");
            // 通知音を消さないと毎回通知音が出てしまう
            // この辺りの設定はcleanにしてから変更
            channel.setSound(null, null);
            // 通知ランプを消す
            channel.enableLights(false);
            channel.setLightColor(Color.BLUE);
            // 通知バイブレーション無し
            channel.enableVibration(false);
            if (notificationManager != null) {
                notificationManager.createNotificationChannel(channel);
                Notification notification = new Notification.Builder(context, channelId)
                        .setContentTitle(title)
                        // 本来なら衛星のアイコンですがandroid標準アイコンを設定
                        .setSmallIcon(android.R.drawable.btn_star)
                        .setContentText("GPS")
                        .setAutoCancel(true)
                        .setContentIntent(pendingIntent)
                        .setWhen(System.currentTimeMillis())
                        .build();

                // startForeground
                startForeground(1, notification);
            }

            startGPS();
            Timer timer = new Timer();
            TimerTask task = new TimerTask() {
                @Override
                public void run() {
                    startUpdateRequest();
                }
            };
            //timer.scheduleAtFixedRate(定期的に実行したいタスク,初回のタスク実行までの時間(ms),実行するタスクの間隔(ms));
            timer.scheduleAtFixedRate(task, 10000, 30000);
            isServiceRunning = true;
        }

        return START_NOT_STICKY;
    }

    @RequiresApi(api = Build.VERSION_CODES.O)
    @Override
    protected void onHandleIntent(Intent intent) {
        Log.d(TAG, "onHandleIntent");
    }

    protected void startGPS() {
        Log.d(TAG, "startGPS");
        final boolean gpsEnabled
                = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);

        if (!gpsEnabled) {
            // GPSを設定するように促す
            enableLocationSettings();
        }

        if (locationManager != null) {
            try {
                if (ActivityCompat.checkSelfPermission(this,
                        Manifest.permission.ACCESS_FINE_LOCATION) !=
                        PackageManager.PERMISSION_GRANTED) {
                    return;
                }
//                Log.d(TAG, "requestLocationUpdates:");

                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                        MinTime, MinDistance, this);
            } catch (Exception e) {
//                Log.d(TAG, "Exception:");

                e.printStackTrace();
            }
        } else {
        }
    }

    @Override
    public void onDestroy() {
        Log.d(TAG, "onDestroy");
        super.onDestroy();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        Log.d(TAG, "onConfigurationChanged");
        super.onConfigurationChanged(newConfig);
    }

    @Override
    public void onLowMemory() {
        Log.d(TAG, "onLowMemory");
        super.onLowMemory();
    }

    @Override
    public void onTrimMemory(int level) {
        Log.d(TAG, "onTrimMemory");
        super.onTrimMemory(level);
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Log.d(TAG, "onBind");
        return super.onBind(intent);
    }

    @Override
    public boolean onUnbind(Intent intent) {
        Log.d(TAG, "onUnbind");
        return super.onUnbind(intent);
    }

    @Override
    public void onRebind(Intent intent) {
        Log.d(TAG, "onRebind");
        super.onRebind(intent);
    }

    @Override
    public void onTaskRemoved(Intent rootIntent) {
        Log.d(TAG, "onTaskRemoved");
        super.onTaskRemoved(rootIntent);
    }

    @Override
    protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
        Log.d(TAG, "dump");
        super.dump(fd, writer, args);
    }

    @Override
    public void onLocationChanged(Location location) {
        final Cosmos cosmos = (Cosmos) getApplication();
//        Log.d(TAG, "onLocationChanged");
        Log.d(TAG, "lat:" + location.getLatitude());
        Log.d(TAG, "lon:" + location.getLongitude());
        
        updateAreaInformation(location);
        this.notifications=searchNotifications(cosmos,location);


    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        Log.d(TAG, "onStatusChanged");
    }

    @Override
    public void onProviderEnabled(String provider) {
        Log.d(TAG, "onProviderEnabled");
    }

    @Override
    public void onProviderDisabled(String provider) {
        Log.d(TAG, "onProviderDisabled");

    }

    private void startUpdateRequest() {
        final Cosmos app = (Cosmos) getApplication();
        if(app.getuId() != null) {
            final String uId, token;
            uId = app.getuId();
            token = app.getToken();

            //retrofitの処理
            final Retrofit retrofit = new Retrofit.Builder()
                    .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/cosmos/rest/")
                    .addConverterFactory(JacksonConverterFactory.create())
                    .build();
            //interfaceから実装を取得
            final GroupsRest getGroupsService = retrofit.create(GroupsRest.class);
            final GroupsRest getRequestsService = retrofit.create(GroupsRest.class);

            //API呼び出しのための値入力
            final Call<GroupListResponse> call = getGroupsService.getGroups(uId, token);

            //サーバからデータ受け取り
            call.enqueue(new Callback<GroupListResponse>() {
                //成功時
                @Override
                public void onResponse(Call<GroupListResponse> call, Response<GroupListResponse> response) {
                    if (response.isSuccessful()) {
                        final GroupListResponse groupListresult = response.body();
                        Log.d(TAG, "GroupListResponseグループ情報通信取得しました");

                        new Thread(new Runnable() {
                            public void run() {
                                for (GroupJson groupJson : groupListresult.getGroups()) {
                                    app.setGroup(new Group(groupJson));
                                    if (groupJson.getRequestHash() != app.getGroup(groupJson.getgId()).getRequestHash()) {
                                        //RequestList取得するための必要な情報
                                        final String gId = groupJson.getgId();
                                        final boolean detail = true;
                                        int quantity = 20;

                                        final Call<RequestList> requestsListByGidCall = getRequestsService.getRequestsListByGid(gId, token, detail, quantity);
                                        Response<RequestList> requestListResponse;
                                        try {
                                            requestListResponse = requestsListByGidCall.execute();
                                            if (requestListResponse.isSuccessful()) {
                                                TimeZone.setDefault(TimeZone.getTimeZone("Asia/Tokyo"));
                                                RequestList requestList = requestListResponse.body();
                                                app.getGroup(groupJson.getgId()).setRequestList(requestList);
                                                app.getGroup(groupJson.getgId()).setRequestHash(groupJson.getRequestHash());
                                                Log.d(TAG, groupJson.getName() + "のRequestListを取得しました");
                                            } else {
                                                // onFailure
                                                try {
                                                    System.out.println(requestListResponse.errorBody().string());
                                                } catch (IOException e) {
                                                    e.printStackTrace();
                                                }

                                                //onFailureでキャッチできないエラーの処理
                                                Log.d(TAG, groupJson.getName() + "の通信エラー");
                                            }
                                        } catch (IOException e) {
                                            e.printStackTrace();
                                            Log.d(TAG, groupJson.getName() + "のRequestListの取得失敗しました");
                                        }
                                    }
                                }
                            }
                        }).start();
                    } else {
                        //onFailureでキャッチできないエラー用
                        Log.d(TAG, "GroupListResponseグループ情報通信エラー");
                    }
                }

                //失敗時
                @Override
                public void onFailure(Call<GroupListResponse> call, Throwable t) {
                    t.printStackTrace();
                    Log.d(TAG, "GroupListResponseグループ情報取得失敗");
                }
            });
        } else {
            Log.d(TAG, "app.getuId()がnull");
        }

    }

    private void enableLocationSettings() {
        Intent settingsIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
        settingsIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(settingsIntent);
    }

    private void updateAreaInformation(Location location){

    }
    public List<Notification> searchNotifications(Cosmos cosmos, Location location){

        return null;
    }

}