package cc.pogoda.mobile.meteosystem;

import android.app.Application;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;
import android.os.StrictMode;
import android.os.strictmode.Violation;

import com.jakewharton.threetenabp.AndroidThreeTen;

import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
import org.tinylog.Logger;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

import cc.pogoda.mobile.meteosystem.activity.handler.MainActImageButtonFavouritesClickEvent;
import cc.pogoda.mobile.meteosystem.config.AppConfiguration;
import cc.pogoda.mobile.meteosystem.dao.AllStationsDao;
import cc.pogoda.mobile.meteosystem.file.ConfigurationFile;
import cc.pogoda.mobile.meteosystem.file.FavouritiesFile;
import cc.pogoda.mobile.meteosystem.file.FileNames;
import cc.pogoda.mobile.meteosystem.type.ParceableStationsList;
import cc.pogoda.mobile.meteosystem.type.WeatherStation;
import cc.pogoda.mobile.meteosystem.type.WeatherStationListEvent;

public class Main extends Application {

    private File directory;

    private File directoryForLogs;

    private Context ctx;

    private ConfigurationFile confFile;

    private FileNames fileNames;

    private FavouritiesFile favouritiesFile;

    public List<WeatherStation> getListOfAllStations() {
        return listOfAllStations;
    }

    private List<WeatherStation> listOfAllStations;

    public List<WeatherStation> getFavs() {
        return favs;
    }

    private List<WeatherStation> favs;

    public File getDirectory() {
        return directory;
    }

    public File getDirectoryForLogs() {
        return directoryForLogs;
    }

    public ConfigurationFile getConfFile() {
        return confFile;
    }

    @Override
    public void onCreate() {
        super.onCreate();

        ctx = this.getApplicationContext();

        confFile = new ConfigurationFile(ctx);

        StrictMode.VmPolicy.Builder b = new StrictMode.VmPolicy.Builder();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            StrictMode.VmPolicy policy = b.detectAll().detectNonSdkApiUsage().penaltyListener((Runnable r) -> r.run(), (Violation v) -> {v.printStackTrace();}).build();
            StrictMode.setVmPolicy(policy);
        }

        directory = getApplicationContext().getDir("meteosystem", Context.MODE_PRIVATE);

        directoryForLogs = new File(directory.getAbsolutePath() + "/logs/");

        System.setProperty("tinylog.directory", directoryForLogs.getAbsolutePath());

        Logger.info("Application starting...");

        AndroidThreeTen.init(this);

        EventBus.getDefault().register(this);

        ConfigurationFile confFile = new ConfigurationFile(ctx);

        confFile.restoreFromFile();

        fileNames = new FileNames(ctx);

        favouritiesFile = new FavouritiesFile(fileNames);

        // download all stations from API
        listOfAllStations = new AllStationsDao().getAllStations();

        Logger.info("[Main][onCreate][listOfAllStations.size() = " + listOfAllStations.size() +  "]");

        // recreate list of favorites
        recreateListOfFavs();

        if (AppConfiguration.locale != null && !AppConfiguration.locale.equals("default") ) {
            Logger.debug("[Main][onCreate][AppConfiguration.locale = " + AppConfiguration.locale +  "]");
            Locale locale = new Locale(AppConfiguration.locale);
            Locale.setDefault(locale);
            Resources resources = this.getResources();
            Configuration config = resources.getConfiguration();
            config.setLocale(locale);
            Logger.debug("[Main][onCreate][locale = " + locale.toLanguageTag() +  "]");
            resources.updateConfiguration(config, resources.getDisplayMetrics());
        }
    }

    private void recreateListOfFavs() {

        // check if this is a first call after application start
        if (favs == null) {
            favs = favouritiesFile.loadFavourites();
        }

        // if favs is still null it means that favourites file doesn't even exists
        // so and user hasn't added any station to it yet
        if (favs == null) {
            favs = new ArrayList<>();
        }
        else {
            // update values for the fav list with listOfAllStations
            //for (WeatherStation f : favs) {
            for (int i = 0; i < favs.size(); i++) {

                //
                WeatherStation fromFavs = favs.get(i);

                // find an index of updated station
                int idx = listOfAllStations.indexOf(fromFavs);

                // get the station
                WeatherStation fromAllStations = listOfAllStations.get(idx);

                // update all parameters
                fromFavs.setAvailableParameters(fromAllStations.getAvailableParameters());
                fromFavs.setMoreInfo(fromAllStations.getMoreInfo());
                fromFavs.setImageAlign(fromAllStations.getImageAlign());
                fromFavs.setImageUrl(fromAllStations.getImageUrl());
                fromFavs.setSponsorUrl(fromAllStations.getSponsorUrl());
                fromFavs.setMoreInfo(fromAllStations.getMoreInfo());
                fromFavs.setLon(fromAllStations.getLon());
                fromFavs.setLat(fromAllStations.getLat());
                fromFavs.setDisplayedName(fromAllStations.getDisplayedName());
                fromFavs.setDisplayedLocation(fromAllStations.getDisplayedLocation());
                fromFavs.setTimezone(fromAllStations.getTimezone());
                fromFavs.setCallsignSsid(fromAllStations.getCallsignSsid());
                fromFavs.setStationNameTextColor(fromAllStations.getStationNameTextColor());

                // there is no need to delete and put object on the list once again
                // as a list does not make a copy of the object. It (ArrayList) keeps
                // only a reference to an object


            }
        }
    }

    @Subscribe(threadMode = ThreadMode.MAIN)
    public void weatherStationListHandler(WeatherStationListEvent serviceEvent) {
        Logger.info("[Main][weatherStationListHandler][serviceEvent = " + serviceEvent +  "]");

        switch (serviceEvent.getEventReason()) {

            case ADD:
                // check of list consist this station
                if (favs.contains(serviceEvent.getStation())) {
                    return;
                }

                // add favourites to list
                favs.add(serviceEvent.getStation());

                try {
                    // save the list into JSON file
                    favouritiesFile.persistFavourities(favs);
                } catch (IOException e) {
                    e.printStackTrace();
                }

                break;
            case DELETE:
                favs.remove(serviceEvent.getStation());

                try {
                    // save the list into JSON file
                    favouritiesFile.persistFavourities(favs);
                } catch (IOException e) {
                    e.printStackTrace();
                }

                break;
        }

        // recreate parceable object and pass it everywhere
        recreateListOfFavs();
        //Toast.makeText(this, intentServiceResult.getResultValue(), Toast.LENGTH_SHORT).show();
    }

}