package org.thoughtcrime.securesms.home

import android.app.AlertDialog
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import android.database.Cursor
import android.os.Bundle
import android.text.SpannableString
import android.widget.Toast
import androidx.activity.viewModels
import androidx.core.os.bundleOf
import androidx.core.view.isVisible
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.Observer
import androidx.lifecycle.lifecycleScope
import androidx.loader.app.LoaderManager
import androidx.loader.content.Loader
import androidx.localbroadcastmanager.content.LocalBroadcastManager
import androidx.recyclerview.widget.LinearLayoutManager
import com.google.android.material.bottomsheet.BottomSheetDialogFragment
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.flow.filter
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import network.loki.messenger.R
import network.loki.messenger.databinding.ActivityHomeBinding
import org.greenrobot.eventbus.EventBus
import org.greenrobot.eventbus.Subscribe
import org.greenrobot.eventbus.ThreadMode
import org.session.libsession.messaging.jobs.JobQueue
import org.session.libsession.messaging.sending_receiving.MessageSender
import org.session.libsession.messaging.utilities.WebRtcUtils
import org.session.libsession.utilities.Util
import org.session.libsignal.protos.SignalServiceProtos
import org.session.libsession.utilities.Address
import org.session.libsession.utilities.GroupUtil
import org.session.libsession.utilities.ProfilePictureModifiedEvent
import org.session.libsession.utilities.TextSecurePreferences
import org.session.libsession.utilities.recipients.Recipient
import org.session.libsignal.utilities.Log
import org.session.libsignal.utilities.ThreadUtils
import org.session.libsignal.utilities.toHexString
import org.thoughtcrime.securesms.ApplicationContext
import org.thoughtcrime.securesms.MuteDialog
import org.thoughtcrime.securesms.PassphraseRequiredActionBarActivity
import org.thoughtcrime.securesms.calls.WebRtcCallActivity
import org.thoughtcrime.securesms.conversation.v2.ConversationActivityV2
import org.thoughtcrime.securesms.conversation.v2.utilities.NotificationUtils
import org.thoughtcrime.securesms.crypto.IdentityKeyUtil
import org.thoughtcrime.securesms.database.GroupDatabase
import org.thoughtcrime.securesms.database.MmsSmsDatabase
import org.thoughtcrime.securesms.database.RecipientDatabase
import org.thoughtcrime.securesms.database.ThreadDatabase
import org.thoughtcrime.securesms.database.model.ThreadRecord
import org.thoughtcrime.securesms.dependencies.DatabaseComponent
import org.thoughtcrime.securesms.dms.CreatePrivateChatActivity
import org.thoughtcrime.securesms.groups.CreateClosedGroupActivity
import org.thoughtcrime.securesms.groups.JoinPublicChatActivity
import org.thoughtcrime.securesms.groups.OpenGroupManager
import org.thoughtcrime.securesms.home.search.GlobalSearchAdapter
import org.thoughtcrime.securesms.home.search.GlobalSearchInputLayout
import org.thoughtcrime.securesms.home.search.GlobalSearchViewModel
import org.thoughtcrime.securesms.mms.GlideApp
import org.thoughtcrime.securesms.mms.GlideRequests
import org.thoughtcrime.securesms.onboarding.SeedActivity
import org.thoughtcrime.securesms.onboarding.SeedReminderViewDelegate
import org.thoughtcrime.securesms.preferences.SettingsActivity
import org.thoughtcrime.securesms.util.ConfigurationMessageUtilities
import org.thoughtcrime.securesms.util.IP2Country
import org.thoughtcrime.securesms.util.UiModeUtilities
import org.thoughtcrime.securesms.util.disableClipping
import org.thoughtcrime.securesms.util.push
import org.thoughtcrime.securesms.util.show
import org.thoughtcrime.securesms.webrtc.CallBottomSheet

import java.io.IOException
import javax.inject.Inject

@AndroidEntryPoint
class HomeActivity : PassphraseRequiredActionBarActivity(),
        ConversationClickListener,
        SeedReminderViewDelegate,
        NewConversationButtonSetViewDelegate,
        LoaderManager.LoaderCallbacks<Cursor>,
        GlobalSearchInputLayout.GlobalSearchInputLayoutListener {

    private lateinit var binding: ActivityHomeBinding
    private lateinit var glide: GlideRequests
    private var broadcastReceiver: BroadcastReceiver? = null

    @Inject lateinit var threadDb: ThreadDatabase
    @Inject lateinit var mmsSmsDatabase: MmsSmsDatabase
    @Inject lateinit var recipientDatabase: RecipientDatabase
    @Inject lateinit var groupDatabase: GroupDatabase
    @Inject lateinit var textSecurePreferences: TextSecurePreferences

    private val globalSearchViewModel by viewModels<GlobalSearchViewModel>()

    private val publicKey: String
        get() = TextSecurePreferences.getLocalNumber(this)!!

    private val homeAdapter: HomeAdapter by lazy {
        HomeAdapter(context = this, cursor = threadDb.conversationList, listener = this)
    }

    private val globalSearchAdapter = GlobalSearchAdapter { model ->
        when (model) {
            is GlobalSearchAdapter.Model.Message -> {
                val threadId = model.messageResult.threadId
                val timestamp = model.messageResult.receivedTimestampMs
                val author = model.messageResult.messageRecipient.address

                val intent = Intent(this, ConversationActivityV2::class.java)
                intent.putExtra(ConversationActivityV2.THREAD_ID, threadId)
                intent.putExtra(ConversationActivityV2.SCROLL_MESSAGE_ID, timestamp)
                intent.putExtra(ConversationActivityV2.SCROLL_MESSAGE_AUTHOR, author)
                push(intent)
            }
            is GlobalSearchAdapter.Model.SavedMessages -> {
                val intent = Intent(this, ConversationActivityV2::class.java)
                intent.putExtra(ConversationActivityV2.ADDRESS, Address.fromSerialized(model.currentUserPublicKey))
                push(intent)
            }
            is GlobalSearchAdapter.Model.Contact -> {
                val address = model.contact.sessionID

                val intent = Intent(this, ConversationActivityV2::class.java)
                intent.putExtra(ConversationActivityV2.ADDRESS, Address.fromSerialized(address))
                push(intent)
            }
            is GlobalSearchAdapter.Model.GroupConversation -> {
                val groupAddress = Address.fromSerialized(model.groupRecord.encodedId)
                val threadId = threadDb.getThreadIdIfExistsFor(Recipient.from(this, groupAddress, false))
                if (threadId >= 0) {
                    val intent = Intent(this, ConversationActivityV2::class.java)
                    intent.putExtra(ConversationActivityV2.THREAD_ID, threadId)
                    push(intent)
                }
            }
            else -> {
                Log.d("Loki", "callback with model: $model")
            }
        }
    }

    // region Lifecycle
    override fun onCreate(savedInstanceState: Bundle?, isReady: Boolean) {
        super.onCreate(savedInstanceState, isReady)
        // Set content view
        binding = ActivityHomeBinding.inflate(layoutInflater)
        setContentView(binding.root)
        // Set custom toolbar
        setSupportActionBar(binding.toolbar)
        // Set up Glide
        glide = GlideApp.with(this)
        // Set up toolbar buttons
        binding.profileButton.glide = glide
        binding.profileButton.setOnClickListener { openSettings() }
        binding.searchViewContainer.setOnClickListener {
            binding.globalSearchInputLayout.requestFocus()
        }
        binding.sessionToolbar.disableClipping()
        // Set up seed reminder view
        val hasViewedSeed = TextSecurePreferences.getHasViewedSeed(this)
        if (!hasViewedSeed) {
            binding.seedReminderView.isVisible = true
            binding.seedReminderView.title = SpannableString("You're almost finished! 80%") // Intentionally not yet translated
            binding.seedReminderView.subtitle = resources.getString(R.string.view_seed_reminder_subtitle_1)
            binding.seedReminderView.setProgress(80, false)
            binding.seedReminderView.delegate = this@HomeActivity
        } else {
            binding.seedReminderView.isVisible = false
        }
        setupHeaderImage()
        // Set up recycler view
        binding.globalSearchInputLayout.listener = this
        homeAdapter.setHasStableIds(true)
        homeAdapter.glide = glide
        binding.recyclerView.adapter = homeAdapter
        binding.globalSearchRecycler.adapter = globalSearchAdapter
        // Set up empty state view
        binding.createNewPrivateChatButton.setOnClickListener { createNewPrivateChat() }
        IP2Country.configureIfNeeded(this@HomeActivity)
        // This is a workaround for the fact that CursorRecyclerViewAdapter doesn't actually auto-update (even though it says it will)
        LoaderManager.getInstance(this).restartLoader(0, null, this)
        // Set up new conversation button set
        binding.newConversationButtonSet.delegate = this
        // Observe blocked contacts changed events
        val broadcastReceiver = object : BroadcastReceiver() {
            override fun onReceive(context: Context, intent: Intent) {
                binding.recyclerView.adapter!!.notifyDataSetChanged()
            }
        }
        this.broadcastReceiver = broadcastReceiver
        LocalBroadcastManager.getInstance(this).registerReceiver(broadcastReceiver, IntentFilter("blockedContactsChanged"))

        lifecycleScope.launchWhenStarted {
            launch(Dispatchers.IO) {
                // Double check that the long poller is up
                (applicationContext as ApplicationContext).startPollingIfNeeded()
                // update things based on TextSecurePrefs (profile info etc)
                // Set up typing observer
                withContext(Dispatchers.Main) {
                    ApplicationContext.getInstance(this@HomeActivity).typingStatusRepository.typingThreads.observe(this@HomeActivity, Observer<Set<Long>> { threadIDs ->
                        val adapter = binding.recyclerView.adapter as HomeAdapter
                        adapter.typingThreadIDs = threadIDs ?: setOf()
                    })
                    updateProfileButton()
                    TextSecurePreferences.events.filter { it == TextSecurePreferences.PROFILE_NAME_PREF }.collect {
                        updateProfileButton()
                    }
                }
                // Set up remaining components if needed
                val application = ApplicationContext.getInstance(this@HomeActivity)
                application.registerForFCMIfNeeded(false)
                val userPublicKey = TextSecurePreferences.getLocalNumber(this@HomeActivity)
                if (userPublicKey != null) {
                    OpenGroupManager.startPolling()
                    JobQueue.shared.resumePendingJobs()
                }
            }
            // monitor the global search VM query
            launch {
                binding.globalSearchInputLayout.query
                        .onEach(globalSearchViewModel::postQuery)
                        .collect()
            }
            // Get group results and display them
            launch {
                globalSearchViewModel.result.collect { result ->
                    val currentUserPublicKey = publicKey
                    val contactAndGroupList = result.contacts.map { GlobalSearchAdapter.Model.Contact(it) } +
                            result.threads.map { GlobalSearchAdapter.Model.GroupConversation(it) }

                    val contactResults = contactAndGroupList.toMutableList()

                    if (contactResults.isEmpty()) {
                        contactResults.add(GlobalSearchAdapter.Model.SavedMessages(currentUserPublicKey))
                    }

                    val userIndex = contactResults.indexOfFirst { it is GlobalSearchAdapter.Model.Contact && it.contact.sessionID == currentUserPublicKey }
                    if (userIndex >= 0) {
                        contactResults[userIndex] = GlobalSearchAdapter.Model.SavedMessages(currentUserPublicKey)
                    }

                    if (contactResults.isNotEmpty()) {
                        contactResults.add(0, GlobalSearchAdapter.Model.Header(R.string.global_search_contacts_groups))
                    }

                    val unreadThreadMap = result.messages
                            .groupBy { it.threadId }.keys
                            .map { it to mmsSmsDatabase.getUnreadCount(it) }
                            .toMap()

                    val messageResults: MutableList<GlobalSearchAdapter.Model> = result.messages
                            .map { messageResult ->
                                GlobalSearchAdapter.Model.Message(
                                        messageResult,
                                        unreadThreadMap[messageResult.threadId] ?: 0
                                )
                            }.toMutableList()

                    if (messageResults.isNotEmpty()) {
                        messageResults.add(0, GlobalSearchAdapter.Model.Header(R.string.global_search_messages))
                    }

                    val newData = contactResults + messageResults

                    globalSearchAdapter.setNewData(result.query, newData)
                }
            }
        }
        EventBus.getDefault().register(this@HomeActivity)
    }

    private fun setupHeaderImage() {
        val isDayUiMode = UiModeUtilities.isDayUiMode(this)
        val headerTint = if (isDayUiMode) R.color.black else R.color.accent
        binding.sessionHeaderImage.setColorFilter(getColor(headerTint))
    }

    override fun onInputFocusChanged(hasFocus: Boolean) {
        if (hasFocus) {
            setSearchShown(true)
        } else {
            setSearchShown(!binding.globalSearchInputLayout.query.value.isNullOrEmpty())
        }
    }

    private fun setSearchShown(isShown: Boolean) {
        binding.searchToolbar.isVisible = isShown
        binding.sessionToolbar.isVisible = !isShown
        binding.recyclerView.isVisible = !isShown
        binding.emptyStateContainer.isVisible = (binding.recyclerView.adapter as HomeAdapter).itemCount == 0 && binding.recyclerView.isVisible
        binding.seedReminderView.isVisible = !TextSecurePreferences.getHasViewedSeed(this) && !isShown
        binding.gradientView.isVisible = !isShown
        binding.globalSearchRecycler.isVisible = isShown
        binding.newConversationButtonSet.isVisible = !isShown
    }

    override fun onCreateLoader(id: Int, bundle: Bundle?): Loader<Cursor> {
        return HomeLoader(this@HomeActivity)
    }

    override fun onLoadFinished(loader: Loader<Cursor>, cursor: Cursor?) {
        homeAdapter.changeCursor(cursor)
        updateEmptyState()
    }

    override fun onLoaderReset(cursor: Loader<Cursor>) {
        homeAdapter.changeCursor(null)
    }

    override fun onResume() {
        super.onResume()
        ApplicationContext.getInstance(this).messageNotifier.setHomeScreenVisible(true)
        if (TextSecurePreferences.getLocalNumber(this) == null) { return; } // This can be the case after a secondary device is auto-cleared
        IdentityKeyUtil.checkUpdate(this)
        binding.profileButton.recycle() // clear cached image before update tje profilePictureView
        binding.profileButton.update()
        val hasViewedSeed = TextSecurePreferences.getHasViewedSeed(this)
        if (hasViewedSeed) {
            binding.seedReminderView.isVisible = false
        }
        if (TextSecurePreferences.getConfigurationMessageSynced(this)) {
            lifecycleScope.launch(Dispatchers.IO) {
                ConfigurationMessageUtilities.syncConfigurationIfNeeded(this@HomeActivity)
            }
        }
    }

    override fun onPause() {
        super.onPause()
        ApplicationContext.getInstance(this).messageNotifier.setHomeScreenVisible(false)
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (resultCode == CreateClosedGroupActivity.closedGroupCreatedResultCode) {
            createNewPrivateChat()
        }
    }

    override fun onDestroy() {
        val broadcastReceiver = this.broadcastReceiver
        if (broadcastReceiver != null) {
            LocalBroadcastManager.getInstance(this).unregisterReceiver(broadcastReceiver)
        }
        super.onDestroy()
        EventBus.getDefault().unregister(this)
    }
    // endregion

    // region Updating
    private fun updateEmptyState() {
        val threadCount = (binding.recyclerView.adapter as HomeAdapter).itemCount
        binding.emptyStateContainer.isVisible = threadCount == 0 && binding.recyclerView.isVisible
    }

    @Subscribe(threadMode = ThreadMode.MAIN)
    fun onUpdateProfileEvent(event: ProfilePictureModifiedEvent) {
        if (event.recipient.isLocalNumber) {
            updateProfileButton()
        }
    }

    private fun updateProfileButton() {
        binding.profileButton.publicKey = publicKey
        binding.profileButton.displayName = TextSecurePreferences.getProfileName(this)
        binding.profileButton.recycle()
        binding.profileButton.update()
    }
    // endregion

    // region Interaction
    override fun onBackPressed() {
        if (binding.globalSearchRecycler.isVisible) {
            binding.globalSearchInputLayout.clearSearch(true)
            return
        }
        super.onBackPressed()
    }

    override fun handleSeedReminderViewContinueButtonTapped() {
        val intent = Intent(this, SeedActivity::class.java)
        show(intent)
    }

    override fun onConversationClick(thread: ThreadRecord) {
        val intent = Intent(this, ConversationActivityV2::class.java)
        intent.putExtra(ConversationActivityV2.THREAD_ID, thread.threadId)
        push(intent)
    }

    override fun onLongConversationClick(thread: ThreadRecord) {
        val bottomSheet = ConversationOptionsBottomSheet()
        bottomSheet.thread = thread
        bottomSheet.onViewDetailsTapped = {
            bottomSheet.dismiss()
            val userDetailsBottomSheet = UserDetailsBottomSheet()
            val bundle = bundleOf(
                    UserDetailsBottomSheet.ARGUMENT_PUBLIC_KEY to thread.recipient.address.toString(),
                    UserDetailsBottomSheet.ARGUMENT_THREAD_ID to thread.threadId
            )
            userDetailsBottomSheet.arguments = bundle
            userDetailsBottomSheet.show(supportFragmentManager, userDetailsBottomSheet.tag)
        }
        bottomSheet.onBlockTapped = {
            bottomSheet.dismiss()
            if (!thread.recipient.isBlocked) {
                blockConversation(thread)
            }
        }
        bottomSheet.onUnblockTapped = {
            bottomSheet.dismiss()
            if (thread.recipient.isBlocked) {
                unblockConversation(thread)
            }
        }
        bottomSheet.onDeleteTapped = {
            bottomSheet.dismiss()
            deleteConversation(thread)
        }
        bottomSheet.onSetMuteTapped = { muted ->
            bottomSheet.dismiss()
            setConversationMuted(thread, muted)
        }
        bottomSheet.onNotificationTapped = {
            bottomSheet.dismiss()
            NotificationUtils.showNotifyDialog(this, thread.recipient) { notifyType ->
                setNotifyType(thread, notifyType)
            }
        }
        bottomSheet.onPinTapped = {
            bottomSheet.dismiss()
            setConversationPinned(thread.threadId, true)
        }
        bottomSheet.onUnpinTapped = {
            bottomSheet.dismiss()
            setConversationPinned(thread.threadId, false)
        }
        bottomSheet.onMarkAllAsReadTapped = {
            bottomSheet.dismiss()
            markAllAsRead(thread)
        }
        bottomSheet.show(supportFragmentManager, bottomSheet.tag)
    }

    private fun blockConversation(thread: ThreadRecord) {
        AlertDialog.Builder(this)
                .setTitle(R.string.RecipientPreferenceActivity_block_this_contact_question)
                .setMessage(R.string.RecipientPreferenceActivity_you_will_no_longer_receive_messages_and_calls_from_this_contact)
                .setNegativeButton(android.R.string.cancel, null)
                .setPositiveButton(R.string.RecipientPreferenceActivity_block) { dialog, _ ->
                    lifecycleScope.launch(Dispatchers.IO) {
                        recipientDatabase.setBlocked(thread.recipient, true)
                        withContext(Dispatchers.Main) {
                            binding.recyclerView.adapter!!.notifyDataSetChanged()
                            dialog.dismiss()
                        }
                    }
                }.show()
    }

    private fun unblockConversation(thread: ThreadRecord) {
        AlertDialog.Builder(this)
                .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)
                .setNegativeButton(android.R.string.cancel, null)
                .setPositiveButton(R.string.RecipientPreferenceActivity_unblock) { dialog, _ ->
                    lifecycleScope.launch(Dispatchers.IO) {
                        recipientDatabase.setBlocked(thread.recipient, false)
                        withContext(Dispatchers.Main) {
                            binding.recyclerView.adapter!!.notifyDataSetChanged()
                            dialog.dismiss()
                        }
                    }
                }.show()
    }

    private fun setConversationMuted(thread: ThreadRecord, isMuted: Boolean) {
        if (!isMuted) {
            lifecycleScope.launch(Dispatchers.IO) {
                recipientDatabase.setMuted(thread.recipient, 0)
                withContext(Dispatchers.Main) {
                    binding.recyclerView.adapter!!.notifyDataSetChanged()
                }
            }
        } else {
            MuteDialog.show(this) { until: Long ->
                lifecycleScope.launch(Dispatchers.IO) {
                    recipientDatabase.setMuted(thread.recipient, until)
                    withContext(Dispatchers.Main) {
                        binding.recyclerView.adapter!!.notifyDataSetChanged()
                    }
                }
            }
        }
    }

    private fun setNotifyType(thread: ThreadRecord, newNotifyType: Int) {
        lifecycleScope.launch(Dispatchers.IO) {
            recipientDatabase.setNotifyType(thread.recipient, newNotifyType)
            withContext(Dispatchers.Main) {
                binding.recyclerView.adapter!!.notifyDataSetChanged()
            }
        }
    }

    private fun setConversationPinned(threadId: Long, pinned: Boolean) {
        lifecycleScope.launch(Dispatchers.IO) {
            threadDb.setPinned(threadId, pinned)
            withContext(Dispatchers.Main) {
                LoaderManager.getInstance(this@HomeActivity).restartLoader(0, null, this@HomeActivity)
            }
        }
    }

    private fun markAllAsRead(thread: ThreadRecord) {
        ThreadUtils.queue {
            threadDb.markAllAsRead(thread.threadId, thread.recipient.isOpenGroupRecipient)
        }
    }

    private fun deleteConversation(thread: ThreadRecord) {
        val threadID = thread.threadId
        val recipient = thread.recipient
        val message = if (recipient.isGroupRecipient) {
            val group = groupDatabase.getGroup(recipient.address.toString()).orNull()
            if (group != null && group.admins.map { it.toString() }.contains(TextSecurePreferences.getLocalNumber(this))) {
                "Because you are the creator of this group it will be deleted for everyone. This cannot be undone."
            } else {
                resources.getString(R.string.activity_home_leave_group_dialog_message)
            }
        } else {
            resources.getString(R.string.activity_home_delete_conversation_dialog_message)
        }
        val dialog = AlertDialog.Builder(this)
        dialog.setMessage(message)
        dialog.setPositiveButton(R.string.yes) { _, _ ->
            lifecycleScope.launch(Dispatchers.Main) {
                val context = this@HomeActivity as Context
                // Cancel any outstanding jobs
                DatabaseComponent.get(context).sessionJobDatabase().cancelPendingMessageSendJobs(threadID)
                // Send a leave group message if this is an active closed group
                if (recipient.address.isClosedGroup && DatabaseComponent.get(context).groupDatabase().isActive(recipient.address.toGroupString())) {
                    var isClosedGroup: Boolean
                    var groupPublicKey: String?
                    try {
                        groupPublicKey = GroupUtil.doubleDecodeGroupID(recipient.address.toString()).toHexString()
                        isClosedGroup = DatabaseComponent.get(context).lokiAPIDatabase().isClosedGroup(groupPublicKey)
                    } catch (e: IOException) {
                        groupPublicKey = null
                        isClosedGroup = false
                    }
                    if (isClosedGroup) {
                        MessageSender.explicitLeave(groupPublicKey!!, false)
                    }
                }
                // Delete the conversation
                val v2OpenGroup = DatabaseComponent.get(this@HomeActivity).lokiThreadDatabase().getOpenGroupChat(threadID)
                if (v2OpenGroup != null) {
                    OpenGroupManager.delete(v2OpenGroup.server, v2OpenGroup.room, this@HomeActivity)
                } else {
                    lifecycleScope.launch(Dispatchers.IO) {
                        threadDb.deleteConversation(threadID)
                    }
                }
                // Update the badge count
                ApplicationContext.getInstance(context).messageNotifier.updateNotification(context)
                // Notify the user
                val toastMessage = if (recipient.isGroupRecipient) R.string.MessageRecord_left_group else R.string.activity_home_conversation_deleted_message
                Toast.makeText(context, toastMessage, Toast.LENGTH_LONG).show()
            }
        }
        dialog.setNegativeButton(R.string.no) { _, _ ->
            // Do nothing
        }
        dialog.create().show()
    }

    private fun openSettings() {
        val intent = Intent(this, SettingsActivity::class.java)
        show(intent, isForResult = true)
    }

    private fun showPath() {
        val intent = Intent(this, PathActivity::class.java)
        show(intent)
    }

    override fun createNewPrivateChat() {
        val intent = Intent(this, CreatePrivateChatActivity::class.java)
        show(intent)
    }

    override fun createNewClosedGroup() {
        val intent = Intent(this, CreateClosedGroupActivity::class.java)
        show(intent, true)
    }

    override fun joinOpenGroup() {
        val intent = Intent(this, JoinPublicChatActivity::class.java)
        show(intent)
    }
    // endregion
}