package com.example.boutiquenet;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;

public class Login extends Activity 
{
  EditText inputEmail;
  EditText inputPassword;
  CheckBox checkBox;
  Button btnLogin;
  Button btnLinkToRegister;  

  /****************/
  /* Réponse JSON */
  /****************/

  private static String KEY_SUCCESS = "success";
  private static String KEY_UID = "code";
  private static String KEY_NAME = "name";
  private static String KEY_EMAIL = "email";
  

  /**********************************/
  /* Enregistrement des préférences */
  /**********************************/

  public static final String PREFS_NAME = ".Preferences";   
  private static final String PREF_EMAIL = "email";
  private static final String PREF_PASSWORD = "password";
  private static final String PREF_CHECKED = "checked";

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.login);

    /********************************/
    /* Définit le nom de l'Activity */
    /********************************/

      setTitle("Login");

    /**********************************************************/
    /* Importation des caractéristiques des champs et boutons */
    /**********************************************************/

    inputEmail = (EditText) findViewById(R.id.loginEmail);
    inputPassword = (EditText) findViewById(R.id.loginPassword);
    checkBox = (CheckBox)findViewById(R.id.cbRememberMe);
    btnLogin = (Button) findViewById(R.id.btnLogin);
    btnLinkToRegister = (Button) findViewById(R.id.btnLinkToRegisterScreen);

    /***********************************************************************/
    /* Restauration des préférences sauvegardées si la checkbox est cochée */
    /***********************************************************************/    

    SharedPreferences pref = getSharedPreferences(PREFS_NAME,MODE_PRIVATE);  
    String email = pref.getString(PREF_EMAIL, "");
    String password = pref.getString(PREF_PASSWORD, "");
    String checked = pref.getString(PREF_CHECKED, "");

    inputEmail.setText(email);
    inputPassword.setText(password);
    checkBox.setChecked(Boolean.parseBoolean(checked));

    /****************************/
    /* Clic sur le bouton Login */
    /****************************/

    btnLogin.setOnClickListener(new View.OnClickListener() 
    {      
      public void onClick(View view) 
      {
        /************************************************************/
        /* Enregistrement des préférences si la checkbox est cochée */
        /************************************************************/  

        if(checkBox.isChecked())
        {
          getSharedPreferences(PREFS_NAME,MODE_PRIVATE)
            .edit()
            .putString(PREF_EMAIL, inputEmail.getText().toString())
            .putString(PREF_PASSWORD, inputPassword.getText().toString())
            .putString(PREF_CHECKED,"TRUE")
            .commit();
        }

        /***********************/
        /* Sinon on les efface */ 
        /***********************/  

        else if(!checkBox.isChecked())
        {
          getSharedPreferences(PREFS_NAME,MODE_PRIVATE).edit().clear().commit();
        }

        /***************************************/
        /* On récupère le contenu des EditText */
        /***************************************/  

        String email = inputEmail.getText().toString();
        String password = inputPassword.getText().toString();

        /******************************************************/
        /* On construit la liste des paramètres de la requête */
        /******************************************************/

        ArrayList nameValuePairs = new ArrayList();
        nameValuePairs.add(new BasicNameValuePair("tag", "login"));
        nameValuePairs.add(new BasicNameValuePair("email", email));
        nameValuePairs.add(new BasicNameValuePair("password", password));

        try
        {
          /********************************************/
          /* Exécute la requête vers le serveur local */
          /********************************************/

          HttpClient httpclient = new DefaultHttpClient();
          HttpPost httppost = new HttpPost("http://10.0.2.2/test/DBB1.php");   // IMPORTANT ici localhost = 10.0.2.2
          httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
          HttpResponse response = httpclient.execute(httppost);
          HttpEntity entity = response.getEntity();
          InputStream is = entity.getContent();
          BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
          StringBuilder sb = new StringBuilder();
          String line = reader.readLine();
          sb.append(line + "\n");
          is.close();

          /***************************/
          /* Résultats de la requête */
          /***************************/

          String result = sb.toString();
          JSONObject jObj = new JSONObject(result);  

          /**********************************************/
          /* Si le résultat de la requête n'est pas nul */
          /**********************************************/

          if (jObj.getString(KEY_SUCCESS) != null) 
          {
            String res = jObj.getString(KEY_SUCCESS); 

            /********************************************/
            /* Si il vaut 1, l'utilisateur est connecté */
            /********************************************/

            if(Integer.parseInt(res) == 1)
            {
              /***************************************/
              /* Stocke les infos dans la BDD SQLite */
              /***************************************/

              DatabaseHandler db = new DatabaseHandler(getApplicationContext());
              db.resetTables();
              db.addUser(jObj.getString(KEY_NAME), jObj.getString(KEY_EMAIL), jObj.getString(KEY_UID));
              Toast.makeText(getApplicationContext(), "Success Login", Toast.LENGTH_SHORT).show();

              /***************************************/
              /* Lancement de l'Activity "DashBoard" */
              /***************************************/

              Intent dashboard = new Intent(getApplicationContext(), MainActivity.class);
              dashboard.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
              startActivity(dashboard);

              /****************************/
              /* Ferme l'Activity "Login" */
              /****************************/

              finish();
            }
            /*************************************/
            /* Si il vaut 0, erreur de connexion */
            /*************************************/

            else
            {
              Toast.makeText(getApplicationContext(), jObj.get("error_msg").toString(), Toast.LENGTH_SHORT).show();
            }
          }

        } 
        catch(Exception e)
        {

        }
      }
    });

    /*****************************/
    /* Clic sur le lien Register */
    /*****************************/
    btnLinkToRegister.setOnClickListener(new View.OnClickListener()
    {
      public void onClick(View view) 
      {
        /**************************************/
        /* Lancement de l'Activity "Register" */
        /**************************************/
        Intent i = new Intent(getApplicationContext(), register.class);
        startActivity(i);

        /****************************/
        /* Ferme l'Activity "Login" */
        /****************************/
        finish();
      }
    });
  }
}