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path: root/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java
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package de.pixart.messenger.ui;

import android.app.AlertDialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.text.Html;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.TextView;

import java.util.Collections;
import java.util.List;
import java.util.concurrent.atomic.AtomicReference;

import de.pixart.messenger.R;
import de.pixart.messenger.databinding.ActivityChannelDiscoveryBinding;
import de.pixart.messenger.entities.Account;
import de.pixart.messenger.entities.Bookmark;
import de.pixart.messenger.entities.Conversation;
import de.pixart.messenger.http.services.MuclumbusService;
import de.pixart.messenger.services.ChannelDiscoveryService;
import de.pixart.messenger.ui.adapter.ChannelSearchResultAdapter;
import de.pixart.messenger.ui.util.PendingItem;
import de.pixart.messenger.ui.util.SoftKeyboardUtils;
import de.pixart.messenger.utils.AccountUtils;
import rocks.xmpp.addr.Jid;

public class ChannelDiscoveryActivity extends XmppActivity implements MenuItem.OnActionExpandListener, TextView.OnEditorActionListener, ChannelDiscoveryService.OnChannelSearchResultsFound, ChannelSearchResultAdapter.OnChannelSearchResultSelected {
    private static final String CHANNEL_DISCOVERY_OPT_IN = "channel_discovery_opt_in";
    private final ChannelSearchResultAdapter adapter = new ChannelSearchResultAdapter();
    private ActivityChannelDiscoveryBinding binding;
    private final PendingItem<String> mInitialSearchValue = new PendingItem<>();
    private MenuItem mMenuSearchView;
    private EditText mSearchEditText;
    private boolean optedIn = false;

    @Override
    protected void refreshUiReal() {

    }

    @Override
    void onBackendConnected() {
        if (optedIn) {
            String query;
            if (mMenuSearchView != null && mMenuSearchView.isActionViewExpanded()) {
                query = mSearchEditText.getText().toString();
            } else {
                query = mInitialSearchValue.peek();
            }
            xmppConnectionService.discoverChannels(query, this);
        }
    }

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = DataBindingUtil.setContentView(this, R.layout.activity_channel_discovery);
        setSupportActionBar((Toolbar) binding.toolbar);
        configureActionBar(getSupportActionBar(), true);
        binding.list.setAdapter(this.adapter);
        this.adapter.setOnChannelSearchResultSelectedListener(this);
        optedIn = getPreferences().getBoolean(CHANNEL_DISCOVERY_OPT_IN, false);

        final String search = savedInstanceState == null ? null : savedInstanceState.getString("search");
        if (search != null) {
            mInitialSearchValue.push(search);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(final Menu menu) {
        getMenuInflater().inflate(R.menu.muc_users_activity, menu);
        mMenuSearchView = menu.findItem(R.id.action_search);
        final View mSearchView = mMenuSearchView.getActionView();
        mSearchEditText = mSearchView.findViewById(R.id.search_field);
        mSearchEditText.setHint(R.string.search_channels);
        String initialSearchValue = mInitialSearchValue.pop();
        if (initialSearchValue != null) {
            mMenuSearchView.expandActionView();
            mSearchEditText.append(initialSearchValue);
            mSearchEditText.requestFocus();
            if (optedIn) {
                xmppConnectionService.discoverChannels(initialSearchValue, this);
            }
        }
        mSearchEditText.setOnEditorActionListener(this);
        mMenuSearchView.setOnActionExpandListener(this);
        return true;
    }

    @Override
    public boolean onMenuItemActionExpand(MenuItem item) {
        mSearchEditText.post(() -> {
            mSearchEditText.requestFocus();
            final InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.showSoftInput(mSearchEditText, InputMethodManager.SHOW_IMPLICIT);
        });
        return true;
    }

    @Override
    public boolean onMenuItemActionCollapse(MenuItem item) {
        final InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(mSearchEditText.getWindowToken(), InputMethodManager.HIDE_IMPLICIT_ONLY);
        mSearchEditText.setText("");
        toggleLoadingScreen();
        if (optedIn) {
            xmppConnectionService.discoverChannels(null, this);
        }
        return true;
    }

    private void toggleLoadingScreen() {
        adapter.submitList(Collections.emptyList());
        binding.progressBar.setVisibility(View.VISIBLE);
    }

    @Override
    public void onStart() {
        super.onStart();
        if (!optedIn) {
            final AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle(R.string.channel_discovery_opt_in_title);
            builder.setMessage(Html.fromHtml(getString(R.string.channel_discover_opt_in_message)));
            builder.setNegativeButton(R.string.cancel, (dialog, which) -> finish());
            builder.setPositiveButton(R.string.confirm, (dialog, which) -> optIn());
            builder.setOnCancelListener(dialog -> finish());
            final AlertDialog dialog = builder.create();
            dialog.setCanceledOnTouchOutside(false);
            dialog.show();
        }
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
        if (mMenuSearchView != null && mMenuSearchView.isActionViewExpanded()) {
            savedInstanceState.putString("search", mSearchEditText != null ? mSearchEditText.getText().toString() : null);
        }
        super.onSaveInstanceState(savedInstanceState);
    }

    private void optIn() {
        SharedPreferences preferences = getPreferences();
        preferences.edit().putBoolean(CHANNEL_DISCOVERY_OPT_IN, true).apply();
        optedIn = true;
        xmppConnectionService.discoverChannels(null, this);
    }

    @Override
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        if (optedIn) {
            xmppConnectionService.discoverChannels(v.getText().toString(), this);
        }
        toggleLoadingScreen();
        SoftKeyboardUtils.hideSoftKeyboard(this);
        return true;
    }

    @Override
    public void onChannelSearchResultsFound(List<MuclumbusService.Room> results) {
        runOnUiThread(() -> {
            adapter.submitList(results);
            binding.list.setVisibility(View.VISIBLE);
            binding.progressBar.setVisibility(View.GONE);
        });
    }

    @Override
    public void onChannelSearchResult(final MuclumbusService.Room result) {
        List<String> accounts = AccountUtils.getEnabledAccounts(xmppConnectionService);
        if (accounts.size() == 1) {
            joinChannelSearchResult(accounts.get(0), result);
        } else if (accounts.size() > 0) {
            final AtomicReference<String> account = new AtomicReference<>(accounts.get(0));
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle(R.string.choose_account);
            builder.setSingleChoiceItems(accounts.toArray(new CharSequence[0]), 0, (dialog, which) -> account.set(accounts.get(which)));
            builder.setPositiveButton(R.string.join, (dialog, which) -> joinChannelSearchResult(account.get(), result));
            builder.setNegativeButton(R.string.cancel, null);
            builder.create().show();
        }
    }

    public void joinChannelSearchResult(String accountJid, MuclumbusService.Room result) {
        final boolean syncAutojoin = getBooleanPreference("autojoin", R.bool.autojoin);
        Account account = xmppConnectionService.findAccountByJid(Jid.of(accountJid));
        final Conversation conversation = xmppConnectionService.findOrCreateConversation(account, result.getRoom(), true, true, true);
        if (conversation.getBookmark() != null) {
            if (!conversation.getBookmark().autojoin() && syncAutojoin) {
                conversation.getBookmark().setAutojoin(true);
                xmppConnectionService.pushBookmarks(account);
            }
        } else {
            final Bookmark bookmark = new Bookmark(account, conversation.getJid().asBareJid());
            bookmark.setAutojoin(syncAutojoin);
            account.getBookmarks().add(bookmark);
            xmppConnectionService.pushBookmarks(account);
        }
        switchToConversation(conversation);
    }
}