package com.example.app_10p5;
  
  import android.app.Activity;

  import android.app.PendingIntent;
  import android.content.Intent;

  import android.nfc.NfcAdapter;
  import android.nfc.Tag;
  import android.nfc.tech.MifareClassic;

  import android.os.Bundle;

  import android.widget.Toast;
  

  import org.json.JSONObject;
  

  import java.io.IOException;

  import java.net.URL;
  import java.util.HashMap;

  
  /**
   * Created by beaus on 24/04/2016.
   */

  public class CarteActivite extends Activity implements ASyncResponse {

  
      private NfcAdapter mNfcAdapter;

      private HashMap<String, String> mParam;
      private String mAPI;
  
      public static final String HOST = "https://10p5.clubinfo.frogeye.fr/";

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

          switch (getIntent().getIntExtra("state", MainActivite.STATE_RIEN)) {
  
              case MainActivite.STATE_COMMANDE:
                  mParam.put("quantite", String.valueOf(getIntent().getIntExtra("quantite", -1)));
                  mParam.put("montant", String.valueOf(getIntent().getFloatExtra("montant", -1)));
                  mParam.put("token", getIntent().getStringExtra("token"));
                  mAPI = "api/client/payer";
                  break;
              case MainActivite.STATE_CREATION_COMPTE:
                  //TODO: param
                  mAPI = "api/client/ajouter";
                  break;
              case MainActivite.STATE_RECHARGEMENT:
                  //TODO: param
                  mAPI = "api/client/recharger";
                  break;
              case MainActivite.STATE_VIDANGE:
                  //TODO: param
                  mAPI = "api/client/vidange";
                  break;
              case MainActivite.STATE_CONNEXION:
              case MainActivite.STATE_RIEN:
              default:
                  Toast.makeText(this, "WTF, le cancer est dans l'application!!", Toast.LENGTH_LONG).show();
                  finish();
                  return;
          }
  

          mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
  

          if (mNfcAdapter == null) {
              // Stop here, we definitely need NFC
              Toast.makeText(this, "This device doesn't support NFC.", Toast.LENGTH_LONG).show();
              finish();
              return;

          }

          handleIntent(getIntent());

      }
  

      @Override
      protected void onResume() {

          super.onResume();

          setupForegroundDispatch(this, mNfcAdapter);

      }
  
      // Convertit l'array de byte en chaîne hexadécimale (si le byte = 0x63, str = "63").
      private String ByteArrayToHexString(byte [] inarray) {
          int i, j, in;
          String [] hex = {"0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"};
          String out= "";
          for(j = 0 ; j < inarray.length ; ++j)
          {
              in = (int) inarray[j] & 0xff;
              i = (in >> 4) & 0x0f;
              out += hex[i];
              i = in & 0x0f;
              out += hex[i];
          }
          return out;
      }
  
      @Override

      protected void onNewIntent(Intent intent) {
          handleIntent(intent);
      }
  

      @Override
      protected void onPause() {
          stopForegroundDispatch(this, mNfcAdapter);
          super.onPause();
      }
  
      private void handleIntent(Intent intent){
          if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) {
              Toast toast;

              String id_carte = ByteArrayToHexString(intent.getByteArrayExtra(NfcAdapter.EXTRA_ID));

              mParam.put("ID", id_carte);

              toast = Toast.makeText(getApplicationContext(), "ID Carte : " + id_carte, Toast.LENGTH_SHORT);
              toast.show();

  
              //Lecture des données
              Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
              MifareClassic mfc = MifareClassic.get(tag);
              byte[] data;
              String prenom = null, nom = null, login = null;
  
              if (mfc != null) {
                  try {
                      mfc.connect();

  
                      //Clé A
                      byte[] cleA = new byte[]{(byte) 0xa0, (byte) 0xa1, (byte) 0xa2,
                              (byte) 0xa3, (byte) 0xa4, (byte) 0xa5};

                      //On veut juste lire le secteur 12
                      boolean estConnecte = mfc.authenticateSectorWithKeyA(12, cleA);

                      if (estConnecte) {
                          //Il y a 4 blocs dans le secteur 12 -> INE, numéro étudiant, prénom, nom
                          //On ne veut que prénom et nom, donc on passe les deux premiers
                          for (int i = 2, bIndex = mfc.sectorToBlock(12) + i; i < 4; i++, bIndex++) {
                              //sectorToBlock : Renvoie l'indice (global, parmis tous les blocs de
                              // tous les secteurs) du premier bloc du secteur 12
                              //Lit les données du bloc
                              data = mfc.readBlock(bIndex);
  
                              //Convertit les bytes en String
                              String dataStr = new String(data);
                              if (i == 2) //Prénom
                                  prenom = dataStr;
                              else if (i == 3) //Nom
                                  nom = dataStr;

                              toast = Toast.makeText(getApplicationContext(), "Données lues : " + dataStr, Toast.LENGTH_SHORT);
                              toast.show();

                          }
                      } else {

                          toast = Toast.makeText(getApplicationContext(), "Erreur lors de la connection au secteur 12.", Toast.LENGTH_SHORT);
                          toast.show();

                      }
                      mfc.close();
                  } catch (IOException e) {
                      System.out.println(e.getLocalizedMessage());
                  }
  
                  //Concaténation des données récupérées en login
                  login = prenom;
                  login.concat(".");
                  login.concat(nom);

              } else {

                  toast = Toast.makeText(getApplicationContext(), "Pas de connection possible à la technologie Mifare Classic.", Toast.LENGTH_SHORT);
                  toast.show();

              }
  

              toast = Toast.makeText(getApplicationContext(), "Login Lille 1 : " + login, Toast.LENGTH_SHORT);
              toast.show();

  
              //Éxécution de la fonction

              clientAPI();
              }

          }

      public static void setupForegroundDispatch(final Activity activity, NfcAdapter adapter){
          final Intent intent = new Intent(activity.getApplicationContext(), activity.getClass());
          intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
          final PendingIntent pendingIntent = PendingIntent.getActivity(activity.getApplicationContext(), 0, intent, 0);
          adapter.enableForegroundDispatch(activity, pendingIntent, null, null);

      }
  

      public static void stopForegroundDispatch(final Activity activity, NfcAdapter adapter) {
          adapter.disableForegroundDispatch(activity);

      }

  
      public void clientAPI() {
          try {
              URL url = new URL(HOST + mAPI);
              NetworkThread nt = new NetworkThread(url, mParam);
              nt.execute();
          }
          catch (Throwable t){
              Toast.makeText(this, "WTF, le cancer est dans l'application!!", Toast.LENGTH_LONG).show();
              finish();
              return;
          }
      }
  
  
      /* Retour du NetworkThread */
      @Override
      public void processFinish(JSONObject output) {
          //TODO: faire un retour vers l'activity parente des données reçues.
      }

  }