package de.pixart.messenger.ui;

import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender.SendIntentException;
import android.content.res.Resources;
import android.databinding.DataBindingUtil;
import android.graphics.Bitmap;
import android.graphics.PorterDuff;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import org.openintents.openpgp.util.OpenPgpUtils;

import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Collections;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.atomic.AtomicInteger;

import de.pixart.messenger.Config;
import de.pixart.messenger.R;
import de.pixart.messenger.crypto.PgpEngine;
import de.pixart.messenger.databinding.ActivityMucDetailsBinding;
import de.pixart.messenger.databinding.ContactBinding;
import de.pixart.messenger.entities.Account;
import de.pixart.messenger.entities.Bookmark;
import de.pixart.messenger.entities.Contact;
import de.pixart.messenger.entities.Conversation;
import de.pixart.messenger.entities.MucOptions;
import de.pixart.messenger.entities.MucOptions.User;
import de.pixart.messenger.services.XmppConnectionService;
import de.pixart.messenger.services.XmppConnectionService.OnConversationUpdate;
import de.pixart.messenger.services.XmppConnectionService.OnMucRosterUpdate;
import de.pixart.messenger.utils.MenuDoubleTabUtil;
import de.pixart.messenger.utils.TimeframeUtils;
import de.pixart.messenger.utils.UIHelper;
import de.pixart.messenger.utils.XmppUri;
import rocks.xmpp.addr.Jid;

public class ConferenceDetailsActivity extends XmppActivity implements OnConversationUpdate, OnMucRosterUpdate, XmppConnectionService.OnAffiliationChanged, XmppConnectionService.OnRoleChanged, XmppConnectionService.OnConfigurationPushed {
    public static final String ACTION_VIEW_MUC = "view_muc";
    private static final float INACTIVE_ALPHA = 0.4684f; //compromise between dark and light theme
    private Conversation mConversation;
    private OnClickListener inviteListener = new OnClickListener() {

        @Override
        public void onClick(View v) {
            inviteToConversation(mConversation);
        }
    };
    private OnClickListener destroyListener = new OnClickListener() {
        @Override
        public void onClick(View v) {
            final AlertDialog.Builder DestroyMucDialog = new AlertDialog.Builder(ConferenceDetailsActivity.this);
            DestroyMucDialog.setNegativeButton(getString(R.string.cancel), null);
            DestroyMucDialog.setTitle(getString(R.string.destroy_muc));
            DestroyMucDialog.setMessage(getString(R.string.destroy_muc_text, mConversation.getName()));
            DestroyMucDialog.setPositiveButton(getString(R.string.delete), (dialogInterface, i) -> {
                Intent intent = new Intent(xmppConnectionService, ConversationsActivity.class);
                intent.setAction(ConversationsActivity.ACTION_DESTROY_MUC);
                intent.putExtra("MUC_UUID", mConversation.getUuid());
                Log.d(Config.LOGTAG, "Sending DESTROY intent for " + mConversation.getName());
                startActivity(intent);
                overridePendingTransition(R.animator.fade_in, R.animator.fade_out);
                deleteBookmark();
                finish();
            });
            DestroyMucDialog.create().show();
        }
    };
    private ActivityMucDetailsBinding binding;
    private String uuid = null;
    private User mSelectedUser = null;

    private boolean mAdvancedMode = false;

    private UiCallback<Conversation> renameCallback = new UiCallback<Conversation>() {
        @Override
        public void success(Conversation object) {
            runOnUiThread(() -> {
                Toast.makeText(ConferenceDetailsActivity.this, getString(R.string.your_nick_has_been_changed), Toast.LENGTH_SHORT).show();
                updateView();
            });

        }

        @Override
        public void error(final int errorCode, Conversation object) {
            runOnUiThread(() -> Toast.makeText(ConferenceDetailsActivity.this, getString(errorCode), Toast.LENGTH_SHORT).show());
        }

        @Override
        public void userInputRequried(PendingIntent pi, Conversation object) {

        }
    };

    private OnClickListener mNotifyStatusClickListener = new OnClickListener() {
        @Override
        public void onClick(View v) {
            AlertDialog.Builder builder = new AlertDialog.Builder(ConferenceDetailsActivity.this);
            builder.setTitle(R.string.pref_notification_settings);
            String[] choices = {
                    getString(R.string.notify_on_all_messages),
                    getString(R.string.notify_only_when_highlighted),
                    getString(R.string.notify_never)
            };
            final AtomicInteger choice;
            if (mConversation.getLongAttribute(Conversation.ATTRIBUTE_MUTED_TILL, 0) == Long.MAX_VALUE) {
                choice = new AtomicInteger(2);
            } else {
                choice = new AtomicInteger(mConversation.alwaysNotify() ? 0 : 1);
            }
            builder.setSingleChoiceItems(choices, choice.get(), (dialog, which) -> choice.set(which));
            builder.setNegativeButton(R.string.cancel, null);
            builder.setPositiveButton(R.string.ok, (dialog, which) -> {
                if (choice.get() == 2) {
                    AlertDialog.Builder builder1 = new AlertDialog.Builder(ConferenceDetailsActivity.this);
                    builder1.setTitle(R.string.disable_notifications);
                    final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
                    final CharSequence[] labels = new CharSequence[durations.length];
                    for (int i = 0; i < durations.length; ++i) {
                        if (durations[i] == -1) {
                            labels[i] = getString(R.string.until_further_notice);
                        } else {
                            labels[i] = TimeframeUtils.resolve(ConferenceDetailsActivity.this, 1000L * durations[i]);
                        }
                    }
                    builder1.setItems(labels, (dialog1, which1) -> {
                        final long till;
                        if (durations[which1] == -1) {
                            till = Long.MAX_VALUE;
                        } else {
                            till = System.currentTimeMillis() + (durations[which1] * 1000);
                        }
                        mConversation.setMutedTill(till);
                        xmppConnectionService.updateConversation(mConversation);
                        updateView();
                    });
                    builder1.create().show();
                } else {
                    mConversation.setMutedTill(0);
                    mConversation.setAttribute(Conversation.ATTRIBUTE_ALWAYS_NOTIFY, String.valueOf(choice.get() == 0));
                }
                xmppConnectionService.updateConversation(mConversation);
                updateView();
            });
            builder.create().show();
        }
    };

    private OnClickListener mChangeConferenceSettings = new OnClickListener() {
        @Override
        public void onClick(View v) {
            final MucOptions mucOptions = mConversation.getMucOptions();
            AlertDialog.Builder builder = new AlertDialog.Builder(ConferenceDetailsActivity.this);
            builder.setTitle(R.string.conference_options);
            final String[] options;
            final boolean[] values;
            if (mAdvancedMode) {
                options = new String[]{
                        getString(R.string.members_only),
                        getString(R.string.moderated),
                        getString(R.string.non_anonymous)
                };
                values = new boolean[]{
                        mucOptions.membersOnly(),
                        mucOptions.moderated(),
                        mucOptions.nonanonymous()
                };
            } else {
                options = new String[]{
                        getString(R.string.members_only),
                        getString(R.string.non_anonymous)
                };
                values = new boolean[]{
                        mucOptions.membersOnly(),
                        mucOptions.nonanonymous()
                };
            }
            builder.setMultiChoiceItems(options, values, (dialog, which, isChecked) -> values[which] = isChecked);
            builder.setNegativeButton(R.string.cancel, null);
            builder.setPositiveButton(R.string.confirm, (dialog, which) -> {
                if (!mucOptions.membersOnly() && values[0]) {
                    xmppConnectionService.changeAffiliationsInConference(mConversation,
                            MucOptions.Affiliation.NONE,
                            MucOptions.Affiliation.MEMBER);
                }
                Bundle options1 = new Bundle();
                options1.putString("muc#roomconfig_membersonly", values[0] ? "1" : "0");
                if (values.length == 2) {
                    options1.putString("muc#roomconfig_whois", values[1] ? "anyone" : "moderators");
                } else if (values.length == 3) {
                    options1.putString("muc#roomconfig_moderatedroom", values[1] ? "1" : "0");
                    options1.putString("muc#roomconfig_whois", values[2] ? "anyone" : "moderators");
                }
                options1.putString("muc#roomconfig_persistentroom", "1");
                xmppConnectionService.pushConferenceConfiguration(mConversation,
                        options1,
                        ConferenceDetailsActivity.this);
            });
            builder.create().show();
        }
    };
    private OnValueEdited onSubjectEdited = new OnValueEdited() {

        @Override
        public String onValueEdited(String value) {
            xmppConnectionService.pushSubjectToConference(mConversation, value);
            return null;
        }
    };

    public static boolean cancelPotentialWork(User user, ImageView imageView) {
        final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);

        if (bitmapWorkerTask != null) {
            final User old = bitmapWorkerTask.o;
            if (old == null || user != old) {
                bitmapWorkerTask.cancel(true);
            } else {
                return false;
            }
        }
        return true;
    }

    private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
        if (imageView != null) {
            final Drawable drawable = imageView.getDrawable();
            if (drawable instanceof AsyncDrawable) {
                final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
                return asyncDrawable.getBitmapWorkerTask();
            }
        }
        return null;
    }

    @Override
    public void onConversationUpdate() {
        refreshUi();
    }

    @Override
    public void onMucRosterUpdate() {
        refreshUi();
    }

    @Override
    protected void refreshUiReal() {
        updateView();
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.binding = DataBindingUtil.setContentView(this, R.layout.activity_muc_details);
        this.binding.changeConferenceButton.setOnClickListener(this.mChangeConferenceSettings);
        this.binding.invite.setOnClickListener(inviteListener);
        this.binding.invite.setVisibility(View.GONE);
        this.binding.invite.setOnClickListener(inviteListener);
        this.binding.destroy.setVisibility(View.GONE);
        this.binding.destroy.setOnClickListener(destroyListener);
        this.binding.leaveMuc.setVisibility(View.GONE);
        this.binding.addContactButton.setVisibility(View.GONE);
        this.binding.mucMoreDetails.setVisibility(View.GONE);
        setSupportActionBar((Toolbar) binding.toolbar);
        configureActionBar(getSupportActionBar());
        this.binding.editNickButton.setOnClickListener(v -> quickEdit(mConversation.getMucOptions().getActualNick(),
                0,
                value -> {
                    if (xmppConnectionService.renameInMuc(mConversation, value, renameCallback)) {
                        return null;
                    } else {
                        return getString(R.string.invalid_username);
                    }
                }));
        this.mAdvancedMode = getPreferences().getBoolean("advanced_muc_mode", false);
        this.binding.mucInfoMore.setVisibility(this.mAdvancedMode ? View.VISIBLE : View.GONE);
        this.binding.notificationStatusButton.setOnClickListener(this.mNotifyStatusClickListener);
        this.binding.notificationStatusButton.setOnClickListener(this.mNotifyStatusClickListener);
    }

    @Override
    protected void onStart() {
        super.onStart();
        final int theme = findTheme();
        if (this.mTheme != theme) {
            recreate();
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem menuItem) {
        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
            return false;
        }
        switch (menuItem.getItemId()) {
            case android.R.id.home:
                finish();
                break;
            case R.id.action_edit_subject:
                if (mConversation != null) {
                    quickEdit(mConversation.getMucOptions().getSubject(),
                            R.string.edit_subject_hint,
                            this.onSubjectEdited);
                }
                break;
            case R.id.action_share_http:
                shareLink(true);
                break;
            case R.id.action_share_uri:
                shareLink(false);
                break;
            case R.id.action_advanced_mode:
                this.mAdvancedMode = !menuItem.isChecked();
                menuItem.setChecked(this.mAdvancedMode);
                getPreferences().edit().putBoolean("advanced_muc_mode", mAdvancedMode).apply();
                final boolean online = mConversation != null && mConversation.getMucOptions().online();
                this.binding.mucInfoMore.setVisibility(this.mAdvancedMode && online ? View.VISIBLE : View.GONE);
                invalidateOptionsMenu();
                updateView();
                break;
        }
        return super.onOptionsItemSelected(menuItem);
    }

    @Override
    protected String getShareableUri(boolean http) {
        if (mConversation != null) {
            if (http) {
                return Config.inviteMUCURL + XmppUri.lameUrlEncode(mConversation.getJid().asBareJid().toEscapedString());
            } else {
                return "xmpp:" + mConversation.getJid().asBareJid().toEscapedString() + "?join";
            }
        } else {
            return null;
        }
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        MenuItem menuItemAdvancedMode = menu.findItem(R.id.action_advanced_mode);
        MenuItem menuItemChangeSubject = menu.findItem(R.id.action_edit_subject);
        menuItemAdvancedMode.setChecked(mAdvancedMode);
        if (mConversation == null) {
            return true;
        }
        menuItemChangeSubject.setVisible(mConversation.getMucOptions().canChangeSubject());
        return true;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.muc_details, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        Object tag = v.getTag();
        if (tag instanceof User) {
            getMenuInflater().inflate(R.menu.muc_details_context, menu);
            final User user = (User) tag;
            final User self = mConversation.getMucOptions().getSelf();
            final Jid jid = user.getFullJid();
            this.mSelectedUser = user;
            String name;
            final Contact contact = user.getContact();
            if (contact != null && contact.showInRoster()) {
                name = contact.getDisplayName();
            } else if (user.getRealJid() != null){
                name = user.getRealJid().asBareJid().toString();
            } else {
                name = user.getName();
            }
            menu.setHeaderTitle(name);
            MenuItem sendPrivateMessage = menu.findItem(R.id.send_private_message);
            MenuItem highlightInMuc = menu.findItem(R.id.highlight_in_muc);
            highlightInMuc.setVisible(true);
            if (user.getRealJid() != null) {
                MenuItem startConversation = menu.findItem(R.id.start_conversation);
                MenuItem giveMembership = menu.findItem(R.id.give_membership);
                MenuItem removeMembership = menu.findItem(R.id.remove_membership);
                MenuItem giveAdminPrivileges = menu.findItem(R.id.give_admin_privileges);
                MenuItem removeAdminPrivileges = menu.findItem(R.id.remove_admin_privileges);
                MenuItem removeFromRoom = menu.findItem(R.id.remove_from_room);
                MenuItem banFromConference = menu.findItem(R.id.ban_from_conference);
                MenuItem invite = menu.findItem(R.id.invite);
                startConversation.setVisible(true);
                if (user.getRole() == MucOptions.Role.NONE) {
                    invite.setVisible(true);
                }
                if (jid != null && !jid.isBareJid()) {
                    if (mConversation.getMucOptions().isUserInRoom(jid)) {
                        sendPrivateMessage.setVisible(true);
                    } else {
                        sendPrivateMessage.setVisible(false);
                    }
                }
                if (self.getAffiliation().ranks(MucOptions.Affiliation.ADMIN) &&
                        self.getAffiliation().outranks(user.getAffiliation())) {
                    if (mAdvancedMode) {
                        if (user.getAffiliation() != MucOptions.Affiliation.ADMIN) {
                            giveAdminPrivileges.setVisible(true);
                        } else {
                            removeAdminPrivileges.setVisible(true);
                        }
                    } else {
                        if (!Config.DISABLE_BAN || mConversation.getMucOptions().membersOnly()) {
                            removeFromRoom.setVisible(true);
                        }
                    }
                    if (user.getAffiliation() == MucOptions.Affiliation.NONE) {
                        giveMembership.setVisible(true);
                    } else {
                        removeMembership.setVisible(true);
                    }
                    if (!Config.DISABLE_BAN) {
                        banFromConference.setVisible(true);
                    }
                }
            } else {

                sendPrivateMessage.setVisible(user.getRole().ranks(MucOptions.Role.VISITOR));
            }

        }
        super.onCreateContextMenu(menu, v, menuInfo);
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        Jid jid = mSelectedUser.getRealJid();
        switch (item.getItemId()) {
            case R.id.highlight_in_muc:
                highlightInMuc(mConversation, mSelectedUser.getName());
                return true;
            case R.id.send_private_message:
                if (mConversation.getMucOptions().allowPm()) {
                    privateMsgInMuc(mConversation, mSelectedUser.getName());
                } else {
                    Toast.makeText(this, R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
                }
                return true;
            case R.id.start_conversation:
                startConversation(mSelectedUser);
                return true;
            case R.id.give_admin_privileges:
                xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.ADMIN, this);
                return true;
            case R.id.give_membership:
                xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.MEMBER, this);
                return true;
            case R.id.remove_membership:
                xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.NONE, this);
                return true;
            case R.id.remove_admin_privileges:
                xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.MEMBER, this);
                return true;
            case R.id.remove_from_room:
                removeFromRoom(mSelectedUser);
                return true;
            case R.id.ban_from_conference:
                xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.OUTCAST, this);
                if (mSelectedUser.getRole() != MucOptions.Role.NONE) {
                    xmppConnectionService.changeRoleInConference(mConversation, mSelectedUser.getName(), MucOptions.Role.NONE, this);
                }
                return true;
            case R.id.invite:
                xmppConnectionService.directInvite(mConversation, jid);
                return true;
            default:
                return super.onContextItemSelected(item);
        }
    }

    private void removeFromRoom(final User user) {
        if (mConversation.getMucOptions().membersOnly()) {
            xmppConnectionService.changeAffiliationInConference(mConversation, user.getRealJid(), MucOptions.Affiliation.NONE, this);
            if (user.getRole() != MucOptions.Role.NONE) {
                xmppConnectionService.changeRoleInConference(mConversation, mSelectedUser.getName(), MucOptions.Role.NONE, ConferenceDetailsActivity.this);
            }
        } else {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle(R.string.ban_from_conference);
            builder.setMessage(getString(R.string.removing_from_public_conference, user.getName()));
            builder.setNegativeButton(R.string.cancel, null);
            builder.setPositiveButton(R.string.ban_now, (dialog, which) -> {
                xmppConnectionService.changeAffiliationInConference(mConversation, user.getRealJid(), MucOptions.Affiliation.OUTCAST, ConferenceDetailsActivity.this);
                if (user.getRole() != MucOptions.Role.NONE) {
                    xmppConnectionService.changeRoleInConference(mConversation, mSelectedUser.getName(), MucOptions.Role.NONE, ConferenceDetailsActivity.this);
                }
            });
            builder.create().show();
        }
    }

    protected void startConversation(User user) {
        if (user.getRealJid() != null) {
            Conversation conversation = xmppConnectionService.findOrCreateConversation(this.mConversation.getAccount(), user.getRealJid().asBareJid(), false, true);
            switchToConversation(conversation);
        }
    }

    protected void saveAsBookmark() {
        xmppConnectionService.saveConversationAsBookmark(mConversation,
                mConversation.getMucOptions().getSubject());
        updateView();
    }

    protected void deleteBookmark() {
        Account account = mConversation.getAccount();
        Bookmark bookmark = mConversation.getBookmark();
        if (bookmark != null) {
            account.getBookmarks().remove(bookmark);
            bookmark.setConversation(null);
        }
        xmppConnectionService.pushBookmarks(account);
        updateView();
    }

    @Override
    void onBackendConnected() {
        if (mPendingConferenceInvite != null) {
            mPendingConferenceInvite.execute(this);
            mPendingConferenceInvite = null;
        }
        if (getIntent().getAction().equals(ACTION_VIEW_MUC)) {
            this.uuid = getIntent().getExtras().getString("uuid");
        }
        if (uuid != null) {
            this.mConversation = xmppConnectionService.findConversationByUuid(uuid);
            if (this.mConversation != null) {
                updateView();
            }
        }
        this.binding.detailsMucAvatar.setImageBitmap(avatarService().get(mConversation, getPixel(Config.AVATAR_SIZE)));
    }

    private void updateView() {
        invalidateOptionsMenu();
        if (mConversation == null) {
            return;
        }
        final MucOptions mucOptions = mConversation.getMucOptions();
        final User self = mucOptions.getSelf();
        String account;
        if (Config.DOMAIN_LOCK != null) {
            account = mConversation.getAccount().getJid().getLocal();
        } else {
            account = mConversation.getAccount().getJid().asBareJid().toString();
        }
        if (getSupportActionBar() != null) {
            final ActionBar ab = getSupportActionBar();
            if (ab != null) {
                ab.setCustomView(R.layout.ab_title);
                ab.setDisplayShowCustomEnabled(true);
                TextView abtitle = findViewById(android.R.id.text1);
                TextView absubtitle = findViewById(android.R.id.text2);
                abtitle.setText(mConversation.getName());
                abtitle.setSelected(true);
                abtitle.setClickable(false);
                absubtitle.setVisibility(View.GONE);
                absubtitle.setClickable(false);
            }
        }
        this.binding.conferenceName.setText(mConversation.getName());
        this.binding.detailsAccount.setText(getString(R.string.using_account, account));
        if (xmppConnectionService.multipleAccounts()) {
            this.binding.detailsAccount.setVisibility(View.VISIBLE);
        } else {
            this.binding.detailsAccount.setVisibility(View.GONE);
        }
        this.binding.yourPhoto.setImageBitmap(avatarService().get(mConversation.getAccount(), getPixel(48)));
        setTitle(mConversation.getName());
        this.binding.mucJabberid.setText(mConversation.getJid().asBareJid().toString());
        this.binding.mucYourNick.setText(mucOptions.getActualNick());
        if (mucOptions.online()) {
            this.binding.mucMoreDetails.setVisibility(View.VISIBLE);
            this.binding.mucSettings.setVisibility(View.VISIBLE);
            this.binding.mucInfoMore.setVisibility(this.mAdvancedMode ? View.VISIBLE : View.GONE);
            final String status = getStatus(self);
            if (status != null) {
                this.binding.mucRole.setVisibility(View.VISIBLE);
                this.binding.mucRole.setText(status);
            } else {
                this.binding.mucRole.setVisibility(View.GONE);
            }
            if (mucOptions.membersOnly()) {
                this.binding.mucConferenceType.setText(R.string.private_conference);
            } else {
                this.binding.mucConferenceType.setText(R.string.public_conference);
            }
            if (mucOptions.mamSupport()) {
                this.binding.mucInfoMam.setText(R.string.server_info_available);
            } else {
                this.binding.mucInfoMam.setText(R.string.server_info_unavailable);
            }
            if (self.getAffiliation().ranks(MucOptions.Affiliation.OWNER)) {
                if (mAdvancedMode) {
                    this.binding.destroy.getBackground().setColorFilter(getWarningButtonColor(), PorterDuff.Mode.MULTIPLY);
                    this.binding.destroy.setVisibility(View.VISIBLE);
                } else {
                    this.binding.destroy.setVisibility(View.GONE);
                }
                this.binding.changeConferenceButton.setVisibility(View.VISIBLE);
            } else {
                this.binding.destroy.setVisibility(View.GONE);
                this.binding.changeConferenceButton.setVisibility(View.GONE);
            }
            this.binding.leaveMuc.setVisibility(View.VISIBLE);
            this.binding.leaveMuc.setOnClickListener(v1 -> {
                final AlertDialog.Builder LeaveMucDialog = new AlertDialog.Builder(ConferenceDetailsActivity.this);
                LeaveMucDialog.setTitle(getString(R.string.action_end_conversation_muc));
                LeaveMucDialog.setMessage(getString(R.string.leave_conference_warning));
                LeaveMucDialog.setNegativeButton(getString(R.string.cancel), null);
                LeaveMucDialog.setPositiveButton(getString(R.string.action_end_conversation_muc),
                        (dialog, which) -> {
                            startActivity(new Intent(xmppConnectionService, ConversationsActivity.class));
                            overridePendingTransition(R.animator.fade_in, R.animator.fade_out);
                            this.xmppConnectionService.archiveConversation(mConversation);
                            finish();
                        });
                LeaveMucDialog.create().show();
            });
            this.binding.leaveMuc.getBackground().setColorFilter(getWarningButtonColor(), PorterDuff.Mode.MULTIPLY);
            this.binding.addContactButton.setVisibility(View.VISIBLE);
            if (mConversation.getBookmark() != null) {
                this.binding.addContactButton.setText(R.string.delete_bookmark);
                this.binding.addContactButton.getBackground().setColorFilter(getWarningButtonColor(), PorterDuff.Mode.MULTIPLY);
                this.binding.addContactButton.setOnClickListener(v2 -> {
                    final AlertDialog.Builder deleteFromRosterDialog = new AlertDialog.Builder(ConferenceDetailsActivity.this);
                    deleteFromRosterDialog.setNegativeButton(getString(R.string.cancel), null);
                    deleteFromRosterDialog.setTitle(getString(R.string.action_delete_contact));
                    deleteFromRosterDialog.setMessage(getString(R.string.remove_bookmark_text, mConversation.getJid().toString()));
                    deleteFromRosterDialog.setPositiveButton(getString(R.string.delete),
                            (dialog, which) -> {
                                deleteBookmark();
                            });
                    deleteFromRosterDialog.create().show();
                });
            } else {
                this.binding.addContactButton.setText(R.string.save_as_bookmark);
                this.binding.addContactButton.getBackground().clearColorFilter();
                this.binding.addContactButton.setOnClickListener(v2 -> {
                    saveAsBookmark();
                });
            }
        } else {
            this.binding.mucMoreDetails.setVisibility(View.GONE);
            this.binding.mucInfoMore.setVisibility(View.GONE);
            this.binding.mucSettings.setVisibility(View.GONE);
        }

        int ic_notifications = getThemeResource(R.attr.icon_notifications, R.drawable.ic_notifications_black_24dp);
        int ic_notifications_off = getThemeResource(R.attr.icon_notifications_off, R.drawable.ic_notifications_off_black_24dp);
        int ic_notifications_paused = getThemeResource(R.attr.icon_notifications_paused, R.drawable.ic_notifications_paused_black_24dp);
        int ic_notifications_none = getThemeResource(R.attr.icon_notifications_none, R.drawable.ic_notifications_none_black_24dp);
        long mutedTill = mConversation.getLongAttribute(Conversation.ATTRIBUTE_MUTED_TILL, 0);
        if (mutedTill == Long.MAX_VALUE) {
            this.binding.notificationStatusText.setText(R.string.notify_never);
            this.binding.notificationStatusButton.setImageResource(ic_notifications_off);
        } else if (System.currentTimeMillis() < mutedTill) {
            this.binding.notificationStatusText.setText(R.string.notify_paused);
            this.binding.notificationStatusButton.setImageResource(ic_notifications_paused);
        } else if (mConversation.alwaysNotify()) {
            this.binding.notificationStatusText.setText(R.string.notify_on_all_messages);
            this.binding.notificationStatusButton.setImageResource(ic_notifications);
        } else {
            this.binding.notificationStatusText.setText(R.string.notify_only_when_highlighted);
            this.binding.notificationStatusButton.setImageResource(ic_notifications_none);
        }

        final LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        this.binding.mucMembers.removeAllViews();
        if (inflater == null) {
            return;
        }
        final ArrayList<User> users = mucOptions.getUsers();
        Collections.sort(users);
        for (final User user : users) {
            ContactBinding binding = DataBindingUtil.inflate(inflater, R.layout.contact, this.binding.mucMembers, false);
            final Contact contact = user.getContact();
            final String name = user.getName();
            this.setListItemBackgroundOnView(binding.getRoot());
            if (contact != null && contact.showInRoster()) {
                binding.getRoot().setOnClickListener((OnClickListener) view -> switchToContactDetails(contact));
            }
            registerForContextMenu(binding.getRoot());
            binding.getRoot().setTag(user);
            if (mAdvancedMode && user.getPgpKeyId() != 0) {
                binding.key.setVisibility(View.VISIBLE);
                binding.key.setOnClickListener(v -> viewPgpKey(user));
                binding.key.setText(OpenPgpUtils.convertKeyIdToHex(user.getPgpKeyId()));
            }
            if (contact != null) {
                binding.contactDisplayName.setText(contact.getDisplayName());
                binding.contactJid.setText((name != null ? name + " \u2022 " : "") + getStatus(user));
            } else {
                binding.contactDisplayName.setText(name == null ? "" : name);
                binding.contactJid.setText(getStatus(user));

            }
            loadAvatar(user, binding.contactPhoto);
            if (user.getRole() == MucOptions.Role.NONE) {
                binding.contactDisplayName.setAlpha(INACTIVE_ALPHA);
                binding.key.setAlpha(INACTIVE_ALPHA);
                binding.contactJid.setAlpha(INACTIVE_ALPHA);
                binding.contactPhoto.setAlpha(INACTIVE_ALPHA);
            }
            this.binding.mucMembers.addView(binding.getRoot());
            if (mConversation.getMucOptions().canInvite()) {
                this.binding.invite.setVisibility(View.VISIBLE);
            } else {
                this.binding.invite.setVisibility(View.GONE);
            }
        }
    }

    private String getStatus(User user) {
        if (mAdvancedMode) {
            return getString(user.getAffiliation().getResId()) +
                    " (" + getString(user.getRole().getResId()) + ')';
        } else {
            return getString(user.getAffiliation().getResId());
        }
    }

    private void viewPgpKey(User user) {
        PgpEngine pgp = xmppConnectionService.getPgpEngine();
        if (pgp != null) {
            PendingIntent intent = pgp.getIntentForKey(user.getPgpKeyId());
            if (intent != null) {
                try {
                    startIntentSenderForResult(intent.getIntentSender(), 0, null, 0, 0, 0);
                } catch (SendIntentException ignored) {

                }
            }
        }
    }

    @Override
    public void onAffiliationChangedSuccessful(Jid jid) {
        refreshUi();
    }

    @Override
    public void onAffiliationChangeFailed(Jid jid, int resId) {
        displayToast(getString(resId, jid.asBareJid().toString()));
    }

    @Override
    public void onRoleChangedSuccessful(String nick) {

    }

    @Override
    public void onRoleChangeFailed(String nick, int resId) {
        displayToast(getString(resId, nick));
    }

    @Override
    public void onPushSucceeded() {
        displayToast(getString(R.string.modified_conference_options));
    }

    @Override
    public void onPushFailed() {
        displayToast(getString(R.string.could_not_modify_conference_options));
    }

    private void displayToast(final String msg) {
        runOnUiThread(() -> Toast.makeText(ConferenceDetailsActivity.this, msg, Toast.LENGTH_SHORT).show());
    }

    public void loadAvatar(User user, ImageView imageView) {
        if (cancelPotentialWork(user, imageView)) {
            final Bitmap bm = avatarService().get(user, getPixel(48), true);
            if (bm != null) {
                cancelPotentialWork(user, imageView);
                imageView.setImageBitmap(bm);
                imageView.setBackgroundColor(0x00000000);
            } else {
                String seed = user.getRealJid() != null ? user.getRealJid().asBareJid().toString() : null;
                imageView.setBackgroundColor(UIHelper.getColorForName(seed == null ? user.getName() : seed));
                imageView.setImageDrawable(null);
                final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
                final AsyncDrawable asyncDrawable = new AsyncDrawable(getResources(), null, task);
                imageView.setImageDrawable(asyncDrawable);
                try {
                    task.execute(user);
                } catch (final RejectedExecutionException ignored) {
                }
            }
        }
    }

    static class AsyncDrawable extends BitmapDrawable {
        private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;

        AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
            super(res, bitmap);
            bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
        }

        BitmapWorkerTask getBitmapWorkerTask() {
            return bitmapWorkerTaskReference.get();
        }
    }

    class BitmapWorkerTask extends AsyncTask<User, Void, Bitmap> {
        private final WeakReference<ImageView> imageViewReference;
        private User o = null;

        private BitmapWorkerTask(ImageView imageView) {
            imageViewReference = new WeakReference<>(imageView);
        }

        @Override
        protected Bitmap doInBackground(User... params) {
            this.o = params[0];
            if (imageViewReference.get() == null) {
                return null;
            }
            return avatarService().get(this.o, getPixel(48), isCancelled());
        }

        @Override
        protected void onPostExecute(Bitmap bitmap) {
            if (bitmap != null && !isCancelled()) {
                final ImageView imageView = imageViewReference.get();
                if (imageView != null) {
                    imageView.setImageBitmap(bitmap);
                    imageView.setBackgroundColor(0x00000000);
                }
            }
        }
    }
}