package org.thoughtcrime.securesms;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.preference.CheckBoxPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.preference.PreferenceFragment;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

import org.thoughtcrime.securesms.color.MaterialColor;
import org.thoughtcrime.securesms.color.MaterialColors;
import org.thoughtcrime.securesms.components.AvatarImageView;
import org.thoughtcrime.securesms.crypto.IdentityKeyParcelable;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.database.GroupDatabase;
import org.thoughtcrime.securesms.database.RecipientPreferenceDatabase.VibrateState;
import org.thoughtcrime.securesms.jobs.MultiDeviceBlockedUpdateJob;
import org.thoughtcrime.securesms.jobs.MultiDeviceContactUpdateJob;
import org.thoughtcrime.securesms.preferences.AdvancedRingtonePreference;
import org.thoughtcrime.securesms.preferences.ColorPreference;
import org.thoughtcrime.securesms.recipients.RecipientFactory;
import org.thoughtcrime.securesms.recipients.Recipients;
import org.thoughtcrime.securesms.util.DirectoryHelper;
import org.thoughtcrime.securesms.util.DynamicLanguage;
import org.thoughtcrime.securesms.util.DynamicNoActionBarTheme;
import org.thoughtcrime.securesms.util.DynamicTheme;
import org.thoughtcrime.securesms.util.IdentityUtil;
import org.thoughtcrime.securesms.util.concurrent.ListenableFuture;
import org.whispersystems.libsignal.IdentityKey;
import org.whispersystems.libsignal.util.guava.Optional;

import java.util.concurrent.ExecutionException;

public class RecipientPreferenceActivity extends PassphraseRequiredActionBarActivity implements Recipients.RecipientsModifiedListener
{
  private static final String TAG = RecipientPreferenceActivity.class.getSimpleName();

  public static final String RECIPIENTS_EXTRA             = "recipient_ids";
  public static final String CAN_HAVE_SAFETY_NUMBER_EXTRA = "can_have_safety_number";

  private static final String PREFERENCE_MUTED    = "pref_key_recipient_mute";
  private static final String PREFERENCE_TONE     = "pref_key_recipient_ringtone";
  private static final String PREFERENCE_VIBRATE  = "pref_key_recipient_vibrate";
  private static final String PREFERENCE_BLOCK    = "pref_key_recipient_block";
  private static final String PREFERENCE_COLOR    = "pref_key_recipient_color";
  private static final String PREFERENCE_IDENTITY = "pref_key_recipient_identity";

  private final DynamicTheme    dynamicTheme    = new DynamicNoActionBarTheme();
  private final DynamicLanguage dynamicLanguage = new DynamicLanguage();

  private AvatarImageView   avatar;
  private Toolbar           toolbar;
  private TextView          title;
  private TextView          blockedIndicator;
  private BroadcastReceiver staleReceiver;

  @Override
  public void onPreCreate() {
    dynamicTheme.onCreate(this);
    dynamicLanguage.onCreate(this);
  }

  @Override
  public void onCreate(Bundle instanceState, @NonNull MasterSecret masterSecret) {
    setContentView(R.layout.recipient_preference_activity);

    long[]     recipientIds = getIntent().getLongArrayExtra(RECIPIENTS_EXTRA);
    Recipients recipients   = RecipientFactory.getRecipientsForIds(this, recipientIds, true);

    initializeToolbar();
    initializeReceivers();
    setHeader(recipients);
    recipients.addListener(this);

    Bundle bundle = new Bundle();
    bundle.putLongArray(RECIPIENTS_EXTRA, recipientIds);
    initFragment(R.id.preference_fragment, new RecipientPreferenceFragment(), masterSecret, null, bundle);
  }

  @Override
  public void onResume() {
    super.onResume();
    dynamicTheme.onResume(this);
    dynamicLanguage.onResume(this);
  }

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

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.preference_fragment);
    fragment.onActivityResult(requestCode, resultCode, data);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    super.onOptionsItemSelected(item);
    switch (item.getItemId()) {
      case android.R.id.home:
        super.onBackPressed();
        return true;
    }

    return false;
  }

  private void initializeToolbar() {
    this.toolbar = (Toolbar) findViewById(R.id.toolbar);
    this.toolbar.setLogo(null);

    setSupportActionBar(toolbar);

    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setDisplayShowTitleEnabled(false);

    this.avatar           = (AvatarImageView) toolbar.findViewById(R.id.avatar);
    this.title            = (TextView) toolbar.findViewById(R.id.name);
    this.blockedIndicator = (TextView) toolbar.findViewById(R.id.blocked_indicator);
  }

  private void initializeReceivers() {
    this.staleReceiver = new BroadcastReceiver() {
      @Override
      public void onReceive(Context context, Intent intent) {
        Recipients recipients = RecipientFactory.getRecipientsForIds(context, getIntent().getLongArrayExtra(RECIPIENTS_EXTRA), true);
        recipients.addListener(RecipientPreferenceActivity.this);
        onModified(recipients);
      }
    };

    IntentFilter staleFilter = new IntentFilter();
    staleFilter.addAction(GroupDatabase.DATABASE_UPDATE_ACTION);
    staleFilter.addAction(RecipientFactory.RECIPIENT_CLEAR_ACTION);

    registerReceiver(staleReceiver, staleFilter);
  }

  private void setHeader(Recipients recipients) {
    this.avatar.setAvatar(recipients, true);
    this.title.setText(recipients.toShortString());
    this.toolbar.setBackgroundColor(recipients.getColor().toActionBarColor(this));

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
      getWindow().setStatusBarColor(recipients.getColor().toStatusBarColor(this));
    }

    if (recipients.isBlocked()) this.blockedIndicator.setVisibility(View.VISIBLE);
    else                        this.blockedIndicator.setVisibility(View.GONE);
  }

  @Override
  public void onModified(final Recipients recipients) {
    title.post(new Runnable() {
      @Override
      public void run() {
        setHeader(recipients);
      }
    });
  }

  public static class RecipientPreferenceFragment
      extends    PreferenceFragment
      implements Recipients.RecipientsModifiedListener
  {

    private final Handler handler = new Handler();

    private Recipients        recipients;
    private BroadcastReceiver staleReceiver;
    private MasterSecret      masterSecret;
    private boolean           canHaveSafetyNumber;

    @Override
    public void onCreate(Bundle icicle) {
      super.onCreate(icicle);

      addPreferencesFromResource(R.xml.recipient_preferences);
      initializeRecipients();

      this.masterSecret        = getArguments().getParcelable("master_secret");
      this.canHaveSafetyNumber = getActivity().getIntent()
                                 .getBooleanExtra(RecipientPreferenceActivity.CAN_HAVE_SAFETY_NUMBER_EXTRA, false);

      this.findPreference(PREFERENCE_TONE)
          .setOnPreferenceChangeListener(new RingtoneChangeListener());
      this.findPreference(PREFERENCE_VIBRATE)
          .setOnPreferenceChangeListener(new VibrateChangeListener());
      this.findPreference(PREFERENCE_MUTED)
          .setOnPreferenceClickListener(new MuteClickedListener());
      this.findPreference(PREFERENCE_BLOCK)
          .setOnPreferenceClickListener(new BlockClickedListener());
      this.findPreference(PREFERENCE_COLOR)
          .setOnPreferenceChangeListener(new ColorChangeListener());
   }

    @Override
    public void onResume() {
      super.onResume();
      setSummaries(recipients);
    }

    @Override
    public void onDestroy() {
      super.onDestroy();
      this.recipients.removeListener(this);
      getActivity().unregisterReceiver(staleReceiver);
    }

    private void initializeRecipients() {
      this.recipients = RecipientFactory.getRecipientsForIds(getActivity(),
                                                             getArguments().getLongArray(RECIPIENTS_EXTRA),
                                                             true);

      this.recipients.addListener(this);

      this.staleReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
          recipients.removeListener(RecipientPreferenceFragment.this);
          recipients = RecipientFactory.getRecipientsForIds(getActivity(), getArguments().getLongArray(RECIPIENTS_EXTRA), true);
          onModified(recipients);
        }
      };

      IntentFilter intentFilter = new IntentFilter();
      intentFilter.addAction(GroupDatabase.DATABASE_UPDATE_ACTION);
      intentFilter.addAction(RecipientFactory.RECIPIENT_CLEAR_ACTION);

      getActivity().registerReceiver(staleReceiver, intentFilter);
    }

    private void setSummaries(Recipients recipients) {
      CheckBoxPreference         mutePreference     = (CheckBoxPreference) this.findPreference(PREFERENCE_MUTED);
      AdvancedRingtonePreference ringtonePreference = (AdvancedRingtonePreference) this.findPreference(PREFERENCE_TONE);
      ListPreference             vibratePreference  = (ListPreference) this.findPreference(PREFERENCE_VIBRATE);
      ColorPreference            colorPreference    = (ColorPreference) this.findPreference(PREFERENCE_COLOR);
      Preference                 blockPreference    = this.findPreference(PREFERENCE_BLOCK);
      final Preference           identityPreference = this.findPreference(PREFERENCE_IDENTITY);

      mutePreference.setChecked(recipients.isMuted());

      final Uri toneUri = recipients.getRingtone();

      if (toneUri == null) {
        ringtonePreference.setSummary(R.string.preferences__default);
        ringtonePreference.setCurrentRingtone(Settings.System.DEFAULT_NOTIFICATION_URI);
      } else if (toneUri.toString().isEmpty()) {
        ringtonePreference.setSummary(R.string.preferences__silent);
        ringtonePreference.setCurrentRingtone(null);
      } else {
        Ringtone tone = RingtoneManager.getRingtone(getActivity(), toneUri);

        if (tone != null) {
          ringtonePreference.setSummary(tone.getTitle(getActivity()));
          ringtonePreference.setCurrentRingtone(toneUri);
        }
      }

      if (recipients.getVibrate() == VibrateState.DEFAULT) {
        vibratePreference.setSummary(R.string.preferences__default);
        vibratePreference.setValueIndex(0);
      } else if (recipients.getVibrate() == VibrateState.ENABLED) {
        vibratePreference.setSummary(R.string.RecipientPreferenceActivity_enabled);
        vibratePreference.setValueIndex(1);
      } else {
        vibratePreference.setSummary(R.string.RecipientPreferenceActivity_disabled);
        vibratePreference.setValueIndex(2);
      }

      if (!recipients.isSingleRecipient() || recipients.isGroupRecipient()) {
        if (colorPreference    != null) getPreferenceScreen().removePreference(colorPreference);
        if (blockPreference    != null) getPreferenceScreen().removePreference(blockPreference);
        if (identityPreference != null) getPreferenceScreen().removePreference(identityPreference);
      } else {
        colorPreference.setChoices(MaterialColors.CONVERSATION_PALETTE.asConversationColorArray(getActivity()));
        colorPreference.setValue(recipients.getColor().toActionBarColor(getActivity()));

        if (recipients.isBlocked()) blockPreference.setTitle(R.string.RecipientPreferenceActivity_unblock);
        else                        blockPreference.setTitle(R.string.RecipientPreferenceActivity_block);

        IdentityUtil.getRemoteIdentityKey(getActivity(), masterSecret, recipients.getPrimaryRecipient()).addListener(new ListenableFuture.Listener<Optional<IdentityKey>>() {
          @Override
          public void onSuccess(Optional<IdentityKey> result) {
            if (result.isPresent()) {
              if (identityPreference != null) identityPreference.setOnPreferenceClickListener(new IdentityClickedListener(result.get()));
              if (identityPreference != null) identityPreference.setEnabled(true);
            } else if (canHaveSafetyNumber) {
              if (identityPreference != null) identityPreference.setSummary(R.string.RecipientPreferenceActivity_available_once_a_message_has_been_sent_or_received);
              if (identityPreference != null) identityPreference.setEnabled(false);
            } else {
              if (identityPreference != null) getPreferenceScreen().removePreference(identityPreference);
            }
          }

          @Override
          public void onFailure(ExecutionException e) {
            if (identityPreference != null) getPreferenceScreen().removePreference(identityPreference);
          }
        });
      }
    }

    @Override
    public void onModified(final Recipients recipients) {
      handler.post(new Runnable() {
        @Override
        public void run() {
          setSummaries(recipients);
        }
      });
    }

    private class RingtoneChangeListener implements Preference.OnPreferenceChangeListener {
      @Override
      public boolean onPreferenceChange(Preference preference, Object newValue) {
        String value = (String)newValue;

        final Uri uri;

        if (Settings.System.DEFAULT_NOTIFICATION_URI.toString().equals(value)) {
          uri = null;
        } else {
          uri = Uri.parse(value);
        }

        recipients.setRingtone(uri);

        new AsyncTask<Uri, Void, Void>() {
          @Override
          protected Void doInBackground(Uri... params) {
            DatabaseFactory.getRecipientPreferenceDatabase(getActivity())
                           .setRingtone(recipients, params[0]);
            return null;
          }
        }.execute(uri);

        return false;
      }
    }

    private class VibrateChangeListener implements Preference.OnPreferenceChangeListener {
      @Override
      public boolean onPreferenceChange(Preference preference, Object newValue) {
              int          value        = Integer.parseInt((String) newValue);
        final VibrateState vibrateState = VibrateState.fromId(value);

        recipients.setVibrate(vibrateState);

        new AsyncTask<Void, Void, Void>() {
          @Override
          protected Void doInBackground(Void... params) {
            DatabaseFactory.getRecipientPreferenceDatabase(getActivity())
                           .setVibrate(recipients, vibrateState);
            return null;
          }
        }.execute();

        return false;
      }
    }

    private class ColorChangeListener implements Preference.OnPreferenceChangeListener {

      @Override
      public boolean onPreferenceChange(Preference preference, Object newValue) {
        final int           value         = (Integer) newValue;
        final MaterialColor selectedColor = MaterialColors.CONVERSATION_PALETTE.getByColor(getActivity(), value);
        final MaterialColor currentColor  = recipients.getColor();

        if (selectedColor == null) return true;

        if (preference.isEnabled() && !currentColor.equals(selectedColor)) {
          recipients.setColor(selectedColor);

          new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(Void... params) {
              Context context = getActivity();
              DatabaseFactory.getRecipientPreferenceDatabase(context)
                             .setColor(recipients, selectedColor);

              if (DirectoryHelper.getUserCapabilities(context, recipients)
                                 .getTextCapability() == DirectoryHelper.UserCapabilities.Capability.SUPPORTED)
              {
                ApplicationContext.getInstance(context)
                                  .getJobManager()
                                  .add(new MultiDeviceContactUpdateJob(context, recipients.getPrimaryRecipient().getRecipientId()));
              }
              return null;
            }
          }.execute();
        }
        return true;
      }
    }

    private class MuteClickedListener implements Preference.OnPreferenceClickListener {
      @Override
      public boolean onPreferenceClick(Preference preference) {
        if (recipients.isMuted()) handleUnmute();
        else                      handleMute();

        return true;
      }

      private void handleMute() {
        MuteDialog.show(getActivity(), new MuteDialog.MuteSelectionListener() {
          @Override
          public void onMuted(long until) {
            setMuted(recipients, until);
          }
        });

        setSummaries(recipients);
      }

      private void handleUnmute() {
        setMuted(recipients, 0);
      }

      private void setMuted(final Recipients recipients, final long until) {
        recipients.setMuted(until);

        new AsyncTask<Void, Void, Void>() {
          @Override
          protected Void doInBackground(Void... params) {
            DatabaseFactory.getRecipientPreferenceDatabase(getActivity())
                           .setMuted(recipients, until);
            return null;
          }
        }.execute();
      }
    }

    private class IdentityClickedListener implements Preference.OnPreferenceClickListener {

      private final IdentityKey identityKey;

      private IdentityClickedListener(IdentityKey identityKey) {
        this.identityKey = identityKey;
      }

      @Override
      public boolean onPreferenceClick(Preference preference) {
        Intent verifyIdentityIntent = new Intent(getActivity(), VerifyIdentityActivity.class);
        verifyIdentityIntent.putExtra(VerifyIdentityActivity.RECIPIENT_ID, recipients.getPrimaryRecipient().getRecipientId());
        verifyIdentityIntent.putExtra(VerifyIdentityActivity.RECIPIENT_IDENTITY, new IdentityKeyParcelable(identityKey));
        startActivity(verifyIdentityIntent);

        return true;
      }
    }

    private class BlockClickedListener implements Preference.OnPreferenceClickListener {
      @Override
      public boolean onPreferenceClick(Preference preference) {
        if (recipients.isBlocked()) handleUnblock();
        else                        handleBlock();

        return true;
      }

      private void handleBlock() {
        new AlertDialog.Builder(getActivity())
            .setTitle(R.string.RecipientPreferenceActivity_block_this_contact_question)
            .setMessage(R.string.RecipientPreferenceActivity_you_will_no_longer_receive_messages_and_calls_from_this_contact)
            .setCancelable(true)
            .setNegativeButton(android.R.string.cancel, null)
            .setPositiveButton(R.string.RecipientPreferenceActivity_block, new DialogInterface.OnClickListener() {
              @Override
              public void onClick(DialogInterface dialog, int which) {
                setBlocked(recipients, true);
              }
            }).show();
      }

      private void handleUnblock() {
        new AlertDialog.Builder(getActivity())
            .setTitle(R.string.RecipientPreferenceActivity_unblock_this_contact_question)
            .setMessage(R.string.RecipientPreferenceActivity_you_will_once_again_be_able_to_receive_messages_and_calls_from_this_contact)
            .setCancelable(true)
            .setNegativeButton(android.R.string.cancel, null)
            .setPositiveButton(R.string.RecipientPreferenceActivity_unblock, new DialogInterface.OnClickListener() {
              @Override
              public void onClick(DialogInterface dialog, int which) {
                setBlocked(recipients, false);
              }
            }).show();
      }

      private void setBlocked(final Recipients recipients, final boolean blocked) {
        recipients.setBlocked(blocked);

        new AsyncTask<Void, Void, Void>() {
          @Override
          protected Void doInBackground(Void... params) {
            Context context = getActivity();

            DatabaseFactory.getRecipientPreferenceDatabase(context)
                           .setBlocked(recipients, blocked);

            ApplicationContext.getInstance(context)
                              .getJobManager()
                              .add(new MultiDeviceBlockedUpdateJob(context));
            return null;
          }
        }.execute();
      }
    }
  }
}