/*
    This file is part of the Diaspora Native WebApp.

    Diaspora Native WebApp is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Diaspora Native WebApp is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with the Diaspora Native WebApp.

    If not, see <http://www.gnu.org/licenses/>.
 */

package com.github.dfa.diaspora_android.activity;

import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Build;
import android.os.Bundle;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.text.SpannableString;
import android.text.TextWatcher;
import android.text.util.Linkify;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.CookieManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;

import com.github.dfa.diaspora_android.App;
import com.github.dfa.diaspora_android.R;
import com.github.dfa.diaspora_android.task.GetPodsService;
import com.github.dfa.diaspora_android.util.Helpers;

import java.util.ArrayList;
import java.util.Collections;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;


public class PodSelectionActivity extends AppCompatActivity {
    private BroadcastReceiver podListReceiver;
    private App app;

    @BindView(R.id.podselection__edit_filter)
    public EditText filter;

    @BindView(R.id.podselection__listpods)
    public ListView lv;

    private String podSelected = "";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.podselection_activity);
        ButterKnife.bind(this);
        app = (App) getApplication();
        lv.setTextFilterEnabled(true);

        podListReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                if (intent.hasExtra("pods")) {
                    Bundle extras = intent.getExtras();
                    String[] pods = extras.getStringArray("pods");

                    if (pods != null && pods.length > 0)
                        updateListview(pods);
                    else {
                        Snackbar.make(lv, R.string.podlist_error, Snackbar.LENGTH_LONG).show();
                    }
                }
            }
        };

        registerReceiver(podListReceiver, new IntentFilter(GetPodsService.MESSAGE));

        if (!Helpers.isOnline(PodSelectionActivity.this)) {
            Snackbar.make(lv, R.string.no_internet, Snackbar.LENGTH_LONG).show();
        }
    }

    @OnClick(R.id.podselection__button_select_pod)
    public void onButtonSelectPodClicked(View view) {
        if (filter.getText().length() > 4 && filter.getText().toString().contains("")) {
            askConfirmation(filter.getText().toString());
        } else {
            Snackbar.make(lv, R.string.valid_pod, Snackbar.LENGTH_LONG).show();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        Intent i = new Intent(PodSelectionActivity.this, GetPodsService.class);
        startService(i);
    }


    private void updateListview(String[] allPods) {
        final ArrayList<String> podList = new ArrayList<>();

        for (String pod : allPods) {
            podList.add(pod.toLowerCase());
        }
        //Collections.sort(podList);

        final ArrayAdapter<String> adapter = new ArrayAdapter<>(
                PodSelectionActivity.this,
                android.R.layout.simple_list_item_1,
                podList);
        lv.setAdapter(adapter);
        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                askConfirmation(((TextView) view).getText().toString());
            }
        });

        adapter.getFilter().filter(filter.getText());
        filter.addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                (adapter).getFilter().filter(s.toString());
            }
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }
            public void afterTextChanged(Editable s) {
            }
        });
    }

    private void askConfirmation(final String podDomain) {
        podSelected = podDomain;

        // Make link clickable
        final SpannableString dialogMessage = new SpannableString(getString(R.string.confirm_pod, podDomain));
        Linkify.addLinks(dialogMessage, Linkify.ALL);

        if (Helpers.isOnline(PodSelectionActivity.this)) {
            new AlertDialog.Builder(PodSelectionActivity.this)
                    .setTitle(getString(R.string.confirmation))
                    .setMessage(dialogMessage)
                    .setPositiveButton(R.string.yes,
                            new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int id) {
                                    dialog.cancel();
                                    onPodSelectionConfirmed();
                                }
                            })
                    .setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
                        @TargetApi(11)
                        public void onClick(DialogInterface dialog, int id) {
                            dialog.cancel();
                            podSelected = "";
                        }
                    }).show();

        } else {
            Snackbar.make(lv, R.string.no_internet, Snackbar.LENGTH_LONG).show();
        }
    }

    public void onPodSelectionConfirmed(){
        app.getSettings().setPodDomain(podSelected);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            try {
                CookieManager.getInstance().removeAllCookies(null);
                CookieManager.getInstance().removeSessionCookies(null);
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            try {
                CookieManager.getInstance().removeAllCookie();
                CookieManager.getInstance().removeSessionCookie();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        Intent intent = new Intent(PodSelectionActivity.this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
        startActivity(intent);
        overridePendingTransition(R.anim.fadein, R.anim.fadeout);
        finish();
    }


    @Override
    public void onBackPressed() {
        Snackbar.make(lv, R.string.confirm_exit, Snackbar.LENGTH_LONG)
                .setAction(R.string.yes, new View.OnClickListener() {
                    public void onClick(View view) {
                        moveTaskToBack(true);
                    }
                })
                .show();
    }

    @Override
    protected void onDestroy() {
        unregisterReceiver(podListReceiver);
        super.onDestroy();
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.action_reload: {
                if (Helpers.isOnline(PodSelectionActivity.this)) {
                    Intent i = new Intent(PodSelectionActivity.this, GetPodsService.class);
                    startService(i);
                    return true;
                } else {
                    Snackbar.make(lv, R.string.no_internet, Snackbar.LENGTH_LONG).show();
                    return false;
                }
            }
        }
        return super.onOptionsItemSelected(item);
    }


}