package com.forgerock.authenticator;

import android.Manifest;

import android.app.ActionBar;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.database.DataSetObserver;

import android.net.Uri;

import android.os.AsyncTask;

import android.os.Bundle;

import android.support.annotation.NonNull;

import android.support.annotation.VisibleForTesting;

import android.support.v4.app.ActivityCompat;

import android.support.v4.content.ContextCompat;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.WindowManager.LayoutParams;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.Toast;

import com.forgerock.authenticator.add.CreateMechanismFromUriTask;

import com.forgerock.authenticator.add.ScanActivity;

import com.forgerock.authenticator.baseactivities.BaseActivity;

import com.forgerock.authenticator.identity.IdentityAdapter;

import com.forgerock.authenticator.mechanisms.CoreMechanismFactory;

import com.forgerock.authenticator.mechanisms.DuplicateMechanismException;

import com.forgerock.authenticator.mechanisms.MechanismCreationException;

import com.forgerock.authenticator.mechanisms.URIMappingException;

import com.forgerock.authenticator.mechanisms.base.Mechanism;

import com.forgerock.authenticator.storage.IdentityModel;

import com.forgerock.authenticator.storage.IdentityModelListener;

import com.squareup.picasso.Callback;

import com.squareup.picasso.Picasso;

import roboguice.RoboGuice;

import roboguice.activity.RoboActivity;

public class IdentityActivity extends BaseActivity implements ActivityCompat.OnRequestPermissionsResultCallback{

private IdentityAdapter identityAdapter;

private DataSetObserver dataSetObserver;

private IdentityModelListener listener;

private Menu menu;

private final int PERMISSION_REQUEST_SCAN = 0;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

ActionBar actionBar = getActionBar();

if (actionBar != null) {

actionBar.setTitle(R.string.identity_title);

actionBar.setDisplayUseLogoEnabled(false);

}

onNewIntent(getIntent());

setContentView(R.layout.identity);

// Don't permit screenshots since these might contain secret information.

getWindow().setFlags(LayoutParams.FLAG_SECURE, LayoutParams.FLAG_SECURE);

identityAdapter = new IdentityAdapter(this);

final GridView identityView = ((GridView) findViewById(R.id.grid));

identityView.setAdapter(identityAdapter);

dataSetObserver = new DataSetObserver() {

@Override

public void onChanged() {

super.onChanged();

if (identityAdapter.getCount() == 0) {

findViewById(R.id.empty).setVisibility(View.VISIBLE);

} else {

findViewById(R.id.empty).setVisibility(View.GONE);

}

}

};

identityAdapter.registerDataSetObserver(dataSetObserver);

listener = new IdentityModelListener() {

@Override

public void notificationChanged() {

runOnUiThread(new Runnable() {

@Override

public void run() {

identityAdapter.notifyDataSetChanged();

}

});

}

};

identityModel.addListener(listener);

}

@Override

protected void onResume() {

super.onResume();

identityAdapter.notifyDataSetChanged();

if (menu != null) {

menu.findItem(R.id.action_scan).setVisible(settings.isCameraEnabled());

}

}

@Override

protected void onPause() {

super.onPause();

identityAdapter.notifyDataSetChanged();

}

@Override

protected void onDestroy() {

super.onDestroy();

identityAdapter.unregisterDataSetObserver(dataSetObserver);

identityModel.removeListener(listener);

}

@VisibleForTesting

public Menu getMenu() {

return menu;

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

super.onCreateOptionsMenu(menu);

this.menu = menu;

getMenuInflater().inflate(R.menu.main, menu);

menu.findItem(R.id.action_scan).setVisible(settings.isCameraEnabled());

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

switch (item.getItemId()) {

case R.id.action_scan:

if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)

!= PackageManager.PERMISSION_GRANTED) {

ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, PERMISSION_REQUEST_SCAN);

} else {

startActivity(new Intent(this, ScanActivity.class));

overridePendingTransition(R.anim.fadein, R.anim.fadeout);

}

return true;

case R.id.action_about:

startActivity(new Intent(this, AboutActivity.class));

return true;

}

return false;

}

@Override

protected void onNewIntent(Intent intent) {

super.onNewIntent(intent);

Uri uri = intent.getData();

if (uri != null) {

new CreateMechanismFromUriTask(this, null).execute(uri.toString());

}

}

@Override

public void onRequestPermissionsResult (int requestCode,

@NonNull String[] permissions,

@NonNull int[] grantResults) {

if (requestCode == PERMISSION_REQUEST_SCAN && permissions.length > 0 && Manifest.permission.CAMERA.equals(permissions[0])) {

if (PackageManager.PERMISSION_GRANTED == grantResults[0]) {

startActivity(new Intent(this, ScanActivity.class));

overridePendingTransition(R.anim.fadein, R.anim.fadeout);

}

}

}

}