package eu.owniidevelopment.quizwithfriends;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.facebook.Response;
import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.model.GraphUser;
import com.facebook.widget.LoginButton;

import eu.owniidevelopment.quizwithfriends.objects.Downloader;
import eu.owniidevelopment.quizwithfriends.objects.Me;
import eu.owniidevelopment.quizwithfriends.statics.MD5;

public class AccountActivity extends Activity implements View.OnClickListener {

    EditText etEmail, etPassword;
    Button bLogin, bLogout;
    TextView tvWelcomeRegister, tvRegister, tvForgotPassword;
    Me me;
    UiLifecycleHelper uiHelper;
    LoginButton bFacebookLogin;
    Session facebookSession;
    Session.StatusCallback callback = new Session.StatusCallback() {
        @Override
        public void call(Session session, SessionState state, Exception exception) {
            onSessionStateChange(session, state, exception);
        }
    };

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

        me = new Me(this);

        uiHelper = new UiLifecycleHelper(this, callback);
        uiHelper.onCreate(savedInstanceState);

        etEmail = (EditText) findViewById(R.id.etEmail);
        etPassword = (EditText) findViewById(R.id.etPassword);
        bLogin = (Button) findViewById(R.id.bLogin);
        bLogout = (Button)findViewById(R.id.bLogout);
        tvRegister = (TextView)findViewById(R.id.tvRegister);
        tvWelcomeRegister = (TextView)findViewById(R.id.tvWelcomeRegister);
        tvForgotPassword = (TextView)findViewById(R.id.tvForgotPassword);
        bFacebookLogin   = (LoginButton) findViewById(R.id.authButton);

        //Facebook Login Button
        bFacebookLogin.setReadPermissions(Arrays.asList("email","public_profile","read_friendlists","user_friends "));

        bLogin.setOnClickListener(this);
        tvRegister.setOnClickListener(this);
        tvForgotPassword.setOnClickListener(this);
        bLogout.setOnClickListener(this);

        getActionBar().setDisplayHomeAsUpEnabled(true);

        if(me.isLoggedIn())
        {
            etEmail.setVisibility(View.GONE);
            etPassword.setVisibility(View.GONE);
            bLogin.setVisibility(View.GONE);
            tvRegister.setVisibility(View.GONE);
            tvForgotPassword.setVisibility(View.GONE);
            bLogout.setVisibility(View.VISIBLE);
            tvWelcomeRegister.setText("Willst du dich wirklich abmelden?");

        }else{

            bLogout.setVisibility(View.GONE);
        }


    }



    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

        // LoginButton is clicked
        if( bLogin.getId() == v.getId() )
        {
            if(etEmail.getText().toString().length() > 0 && etPassword.getText().toString().length() > 0){



                List<NameValuePair> post = new ArrayList<NameValuePair>();

                post.add(new BasicNameValuePair("email", etEmail.getText().toString()));
                try {
                    post.add(new BasicNameValuePair("password", MD5.hash(etPassword.getText().toString())));
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

                Downloader.download(this, "login", post, new Downloader.DownloadListener() {

                    @Override
                    public void completed(JSONObject json) throws JSONException {

                        if(json.getBoolean("succeeded")){
                            int userid = json.getInt("userid");
                            String username = json.getString("username");
                            Toast.makeText(AccountActivity.this, "Eingeloggt", Toast.LENGTH_LONG).show();
                            me.logIn();
                            me.setId(userid);
                            me.setUsername(username);

                            finish();

                        }
                        else{
                            Toast.makeText(AccountActivity.this, "Falsche Email oder falsches Passwort", Toast.LENGTH_LONG).show();
                        }

                    }
                });
            }
        }

        // Register Text is clicked
        if( tvRegister.getId() == v.getId() )
        {
            Intent registerActivity = new Intent(this, RegisterActivity.class);
            startActivity(registerActivity);
        }

        // Forgot password Text is clicked
        if( tvForgotPassword.getId() == v.getId() )
        {
            Intent resetPasswordActivity = new Intent(this, ResetPasswordActivity.class);
            startActivity(resetPasswordActivity);
        }

        // Button Logout is clicked
        if( bLogout.getId() == v.getId() )
        {
            me.logout();
        }


    }


    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch(item.getItemId())
        {
            case android.R.id.home:
                finish();
            break;
        }

        return super.onOptionsItemSelected(item);

    }

    private void onSessionStateChange(Session session, SessionState state, Exception exception) {
        if (state.isOpened()) {

            facebookSession = session;

            if( !me.isFacebookLoggedIn() )
            {

                final ProgressDialog dialog = ProgressDialog.show(this, "Laden", "Anmelden...");
                com.facebook.Request request =  com.facebook.Request.newMeRequest(facebookSession, new com.facebook.Request.GraphUserCallback() {

                    @Override
                    public void onCompleted(GraphUser user, Response response) {
                        if( facebookSession == Session.getActiveSession() )
                        {
                            if( user != null )
                            {
                                final String user_id = user.getId();
                                Log.i("custom", "facebook ID: " + user_id);
                                final String user_name = user.getName();


                                List<NameValuePair> post = new ArrayList<NameValuePair>();
                                post.add(new BasicNameValuePair("fbID", user_id));
                                post.add(new BasicNameValuePair("userid", "" + me.getId()));
                                post.add(new BasicNameValuePair("fbName", user_name));

                                Downloader.download(AccountActivity.this, "fbLogin", post, new Downloader.DownloadListener() {

                                    @Override
                                    public void completed(JSONObject json) throws JSONException {
                                        if( json.getBoolean("succeeded") )
                                        {
                                            me.logInFacebook();
                                        }
                                        else
                                        {
                                            Toast.makeText(AccountActivity.this, "Fehlgeschlagen", Toast.LENGTH_SHORT).show();
                                            facebookSession.close();
                                        }
                                        dialog.dismiss();

                                    }
                                });
                            }
                        }
                    }
                });

                com.facebook.Request.executeBatchAsync(request);

            }

        } else if (state.isClosed()) {

            if( me.isFacebookLoggedIn() )
            {

                final ProgressDialog dialog = ProgressDialog.show(this, "Laden", "Abmelden...");

                List<NameValuePair> post = new ArrayList<NameValuePair>();
                post.add(new BasicNameValuePair("userid", ""+me.getId()));

                Downloader.download(this, "fbLogout", post, new Downloader.DownloadListener() {

                    @Override
                    public void completed(JSONObject json) throws JSONException {
                        dialog.dismiss();
                        me.logOutFacebook();

                    }
                });
            }

        }
    }

    @Override
    public void onResume() {
        super.onResume();
        Session session = Session.getActiveSession();
        if (session != null &&
                (session.isOpened() || session.isClosed()) ) {
             onSessionStateChange(session, session.getState(), null);
         }

         uiHelper.onResume();
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        uiHelper.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public void onPause() {
        super.onPause();
        uiHelper.onPause();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        uiHelper.onDestroy();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        uiHelper.onSaveInstanceState(outState);
    }

}