package info.nightscout.androidaps;

import android.Manifest;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.preference.PreferenceManager;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

import com.joanzapata.iconify.Iconify;
import com.joanzapata.iconify.fonts.FontAwesomeModule;
import com.squareup.otto.Subscribe;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.Iterator;

import info.nightscout.androidaps.Services.AlertService;
import info.nightscout.androidaps.events.EventAppExit;
import info.nightscout.androidaps.events.EventRefreshGui;
import info.nightscout.androidaps.interfaces.PluginBase;
import info.nightscout.androidaps.plugins.Careportal.CareportalFragment;
import info.nightscout.androidaps.plugins.ConfigBuilder.ConfigBuilderFragment;
import info.nightscout.androidaps.plugins.DanaR.DanaRFragment;
import info.nightscout.androidaps.plugins.Loop.LoopFragment;
import info.nightscout.androidaps.plugins.LowSuspend.LowSuspendFragment;
import info.nightscout.androidaps.plugins.NSProfileViewer.NSProfileViewerFragment;
import info.nightscout.androidaps.plugins.OpenAPSMA.OpenAPSMAFragment;
import info.nightscout.androidaps.plugins.Overview.OverviewFragment;
import info.nightscout.androidaps.plugins.SafetyFragment.SafetyFragment;
import info.nightscout.androidaps.plugins.SimpleProfile.SimpleProfileFragment;
import info.nightscout.androidaps.plugins.SourceNSClient.SourceNSClientFragment;
import info.nightscout.androidaps.plugins.SourceXdrip.SourceXdripFragment;
import info.nightscout.androidaps.plugins.TempBasals.TempBasalsFragment;
import info.nightscout.androidaps.plugins.Treatments.TreatmentsFragment;
import info.nightscout.androidaps.plugins.VirtualPump.VirtualPumpFragment;
import info.nightscout.androidaps.receivers.KeepAliveReceiver;
import info.nightscout.androidaps.tabs.*;
import info.nightscout.androidaps.plugins.Objectives.ObjectivesFragment;
import info.nightscout.utils.ImportExportPrefs;
import info.nightscout.utils.LocaleHelper;

public class MainActivity extends AppCompatActivity {
    private static Logger log = LoggerFactory.getLogger(MainActivity.class);

    private Toolbar toolbar;
    private SlidingTabLayout mTabs;
    private ViewPager mPager;
    private static TabPageAdapter pageAdapter;
    private static KeepAliveReceiver keepAliveReceiver;

    private static ArrayList<PluginBase> pluginsList = null;

    private static ConfigBuilderFragment configBuilderFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Iconify.with(new FontAwesomeModule());
        LocaleHelper.onCreate(this, "en");
        checkEula();
        setContentView(R.layout.activity_main);
        if (Config.logFunctionCalls)
            log.debug("onCreate");

        // show version in toolbar
        try {
            setTitle(getString(R.string.app_name) + " v" + getPackageManager().getPackageInfo(getPackageName(), 0).versionName);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        if (pluginsList == null) {
            pluginsList = new ArrayList<PluginBase>();
            // Register all tabs in app here
            pluginsList.add(OverviewFragment.newInstance());
            if (Config.DANAR) pluginsList.add(DanaRFragment.newInstance());
            pluginsList.add(VirtualPumpFragment.newInstance());
            if (Config.CAREPORTALENABLED) pluginsList.add(CareportalFragment.newInstance());
            if (Config.LOOPENABLED) pluginsList.add(LoopFragment.newInstance());
            if (Config.LOWSUSPEDENABLED) pluginsList.add(LowSuspendFragment.newInstance());
            if (Config.OPENAPSMAENABLED) pluginsList.add(OpenAPSMAFragment.newInstance());
            pluginsList.add(NSProfileViewerFragment.newInstance());
            pluginsList.add(SimpleProfileFragment.newInstance());
            pluginsList.add(TreatmentsFragment.newInstance());
            pluginsList.add(TempBasalsFragment.newInstance());
            pluginsList.add(SafetyFragment.newInstance());
            if (Config.OBJECTIVESENABLED) pluginsList.add(ObjectivesFragment.newInstance());
            pluginsList.add(SourceXdripFragment.newInstance());
            pluginsList.add(SourceNSClientFragment.newInstance());
            pluginsList.add(configBuilderFragment = ConfigBuilderFragment.newInstance());

            registerBus();
            keepAliveReceiver = new KeepAliveReceiver();
            keepAliveReceiver.setAlarm(this);

            configBuilderFragment.initialize();
            MainApp.setConfigBuilder(configBuilderFragment);
        }
        setUpTabs(false);
    }

    @Subscribe
    public void onStatusEvent(final EventRefreshGui ev) {
        SharedPreferences SP = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
        String lang = SP.getString("language", "en");
        LocaleHelper.setLocale(getApplicationContext(), lang);
        recreate();
        try { // activity may be destroyed
            setUpTabs(true);
        } catch (IllegalStateException e) {
        }
    }

    private void setUpTabs(boolean switchToLast) {
        pageAdapter = new TabPageAdapter(getSupportFragmentManager());
        for (PluginBase f : pluginsList) {
            pageAdapter.registerNewFragment((Fragment) f);
        }
        mPager = (ViewPager) findViewById(R.id.pager);
        mPager.setAdapter(pageAdapter);
        mTabs = (SlidingTabLayout) findViewById(R.id.tabs);
        mTabs.setViewPager(mPager);
        if (switchToLast)
            mPager.setCurrentItem(pageAdapter.getCount() - 1, false);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        switch (id) {
            case R.id.nav_preferences:
                Intent i = new Intent(getApplicationContext(), PreferencesActivity.class);
                startActivity(i);
                break;
            case R.id.nav_resetdb:
                MainApp.getDbHelper().resetDatabases();
                break;
            case R.id.nav_export:
                ImportExportPrefs.verifyStoragePermissions(this);
                ImportExportPrefs.exportSharedPreferences(this);
                break;
            case R.id.nav_import:
                ImportExportPrefs.verifyStoragePermissions(this);
                ImportExportPrefs.importSharedPreferences(this);
                break;
            case R.id.nav_test_alarm:
                final int REQUEST_CODE_ASK_PERMISSIONS = 2355;
                int permission = ActivityCompat.checkSelfPermission(this, Manifest.permission.SYSTEM_ALERT_WINDOW);
                if (permission != PackageManager.PERMISSION_GRANTED) {
                    // We don't have permission so prompt the user
                    // On Android 6 give permission for alarming in Settings -> Apps -> Draw over other apps
                    ActivityCompat.requestPermissions(
                            this,
                            new String[]{Manifest.permission.SYSTEM_ALERT_WINDOW},
                            REQUEST_CODE_ASK_PERMISSIONS
                    );
                }
                Intent alarmServiceIntent = new Intent(getApplicationContext(), AlertService.class);
                alarmServiceIntent.putExtra("alarmText", getString(R.string.nav_test_alarm));
                getApplicationContext().startService(alarmServiceIntent);
                break;
            case R.id.nav_exit:
                log.debug("Exiting");
                keepAliveReceiver.cancelAlarm(this);

                MainApp.bus().post(new EventAppExit());
                MainApp.closeDbHelper();
                finish();
                System.runFinalization();
                System.exit(0);
                break;
        }
        return super.onOptionsItemSelected(item);
    }


    private void registerBus() {
        try {
            MainApp.bus().unregister(this);
        } catch (RuntimeException x) {
            // Ignore
        }
        MainApp.bus().register(this);
    }

    private void checkEula() {
        boolean IUnderstand = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getBoolean("I_understand", false);
        if (!IUnderstand) {
            Intent intent = new Intent(getApplicationContext(), AgreementActivity.class);
            startActivity(intent);
            finish();
        }
    }

    public static ArrayList<PluginBase> getPluginsList() {
        return pluginsList;
    }

    public static ArrayList<PluginBase> getSpecificPluginsList(int type) {
        ArrayList<PluginBase> newList = new ArrayList<PluginBase>();

        if (pluginsList != null) {
            Iterator<PluginBase> it = pluginsList.iterator();
            while (it.hasNext()) {
                PluginBase p = it.next();
                if (p.getType() == type)
                    newList.add(p);
            }
        } else {
            log.error("pluginsList=null");
        }
        return newList;
    }

    public static ArrayList<PluginBase> getSpecificPluginsListByInterface(Class interfaceClass) {
        ArrayList<PluginBase> newList = new ArrayList<PluginBase>();

        if (pluginsList != null) {
            Iterator<PluginBase> it = pluginsList.iterator();
            while (it.hasNext()) {
                PluginBase p = it.next();
                if (p.getClass() != ConfigBuilderFragment.class && interfaceClass.isAssignableFrom(p.getClass()))
                    newList.add(p);
            }
        } else {
            log.error("pluginsList=null");
        }
        return newList;
    }

    @Nullable
    public static PluginBase getSpecificPlugin(Class pluginClass) {
        if (pluginsList != null) {
            Iterator<PluginBase> it = pluginsList.iterator();
            while (it.hasNext()) {
                PluginBase p = it.next();
                if (p.getClass() == pluginClass)
                    return p;
            }
        } else {
            log.error("pluginsList=null");
        }
        return null;
    }
}