package io.nekohasekai.sagernet.ui

import android.content.Intent
import android.graphics.Color
import android.net.Uri
import android.os.Bundle
import android.os.SystemClock
import android.provider.OpenableColumns
import android.text.SpannableStringBuilder
import android.text.Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
import android.text.format.Formatter
import android.text.style.ForegroundColorSpan
import android.view.*
import android.widget.ImageView
import android.widget.LinearLayout
import android.widget.TextView
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.widget.PopupMenu
import androidx.appcompat.widget.SearchView
import androidx.appcompat.widget.Toolbar
import androidx.core.view.isGone
import androidx.core.view.isVisible
import androidx.core.view.size
import androidx.fragment.app.Fragment
import androidx.preference.PreferenceDataStore
import androidx.recyclerview.widget.ItemTouchHelper
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import androidx.viewpager2.adapter.FragmentStateAdapter
import androidx.viewpager2.widget.ViewPager2
import com.google.android.material.dialog.MaterialAlertDialogBuilder
import com.google.android.material.tabs.TabLayout
import com.google.android.material.tabs.TabLayoutMediator
import io.nekohasekai.sagernet.*
import io.nekohasekai.sagernet.aidl.TrafficData
import io.nekohasekai.sagernet.bg.BaseService
import io.nekohasekai.sagernet.bg.proto.UrlTest
import io.nekohasekai.sagernet.database.*
import io.nekohasekai.sagernet.database.preference.OnPreferenceDataStoreChangeListener
import io.nekohasekai.sagernet.databinding.LayoutAppsItemBinding
import io.nekohasekai.sagernet.databinding.LayoutProfileListBinding
import io.nekohasekai.sagernet.databinding.LayoutProgressListBinding
import io.nekohasekai.sagernet.fmt.AbstractBean
import io.nekohasekai.sagernet.fmt.toUniversalLink
import io.nekohasekai.sagernet.group.RawUpdater
import io.nekohasekai.sagernet.ktx.*
import io.nekohasekai.sagernet.plugin.PluginManager
import io.nekohasekai.sagernet.ui.profile.*
import io.nekohasekai.sagernet.utils.PackageCache
import io.nekohasekai.sagernet.widget.QRCodeDialog
import io.nekohasekai.sagernet.widget.UndoSnackbarManager
import kotlinx.coroutines.*
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.sync.withLock
import moe.matsuri.nb4a.Protocols
import moe.matsuri.nb4a.Protocols.getProtocolColor
import moe.matsuri.nb4a.plugin.NekoPluginManager
import moe.matsuri.nb4a.proxy.config.ConfigSettingActivity
import moe.matsuri.nb4a.proxy.neko.NekoJSInterface
import moe.matsuri.nb4a.proxy.neko.NekoSettingActivity
import moe.matsuri.nb4a.proxy.neko.canShare
import moe.matsuri.nb4a.proxy.shadowtls.ShadowTLSSettingsActivity
import okhttp3.internal.closeQuietly
import java.net.InetAddress
import java.net.InetSocketAddress
import java.net.Socket
import java.net.UnknownHostException
import java.util.*
import java.util.concurrent.ConcurrentLinkedQueue
import java.util.concurrent.atomic.AtomicInteger
import java.util.zip.ZipInputStream
import kotlin.collections.set

class ConfigurationFragment @JvmOverloads constructor(
    val select: Boolean = false, val selectedItem: ProxyEntity? = null, val titleRes: Int = 0
) : ToolbarFragment(R.layout.layout_group_list),
    PopupMenu.OnMenuItemClickListener,
    Toolbar.OnMenuItemClickListener,
    SearchView.OnQueryTextListener,
    OnPreferenceDataStoreChangeListener {

    interface SelectCallback {
        fun returnProfile(profileId: Long)
    }

    lateinit var adapter: GroupPagerAdapter
    lateinit var tabLayout: TabLayout
    lateinit var groupPager: ViewPager2

    val alwaysShowAddress by lazy { DataStore.alwaysShowAddress }

    fun getCurrentGroupFragment(): GroupFragment? {
        return childFragmentManager.findFragmentByTag("f" + DataStore.selectedGroup) as GroupFragment?
    }

    val updateSelectedCallback = object : ViewPager2.OnPageChangeCallback() {
        override fun onPageScrolled(
            position: Int, positionOffset: Float, positionOffsetPixels: Int
        ) {
            if (adapter.groupList.size > position) {
                DataStore.selectedGroup = adapter.groupList[position].id
            }
        }
    }

    override fun onQueryTextChange(query: String): Boolean {
        getCurrentGroupFragment()?.adapter?.filter(query)
        return false
    }

    override fun onQueryTextSubmit(query: String): Boolean = false

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        if (savedInstanceState != null) {
            parentFragmentManager.beginTransaction()
                .setReorderingAllowed(false)
                .detach(this)
                .attach(this)
                .commit()
        }
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        if (!select) {
            toolbar.inflateMenu(R.menu.add_profile_menu)
            toolbar.setOnMenuItemClickListener(this)
        } else {
            toolbar.setTitle(titleRes)
            toolbar.setNavigationIcon(R.drawable.ic_navigation_close)
            toolbar.setNavigationOnClickListener {
                requireActivity().finish()
            }
        }

        val searchView = toolbar.findViewById<SearchView>(R.id.action_search)
        if (searchView != null) {
            searchView.setOnQueryTextListener(this)
            searchView.maxWidth = Int.MAX_VALUE
        }

        groupPager = view.findViewById(R.id.group_pager)
        tabLayout = view.findViewById(R.id.group_tab)
        adapter = GroupPagerAdapter()
        ProfileManager.addListener(adapter)
        GroupManager.addListener(adapter)

        groupPager.adapter = adapter
        groupPager.offscreenPageLimit = 2

        TabLayoutMediator(tabLayout, groupPager) { tab, position ->
            if (adapter.groupList.size > position) {
                tab.text = adapter.groupList[position].displayName()
            }
            tab.view.setOnLongClickListener { // clear toast
                true
            }
        }.attach()

        toolbar.setOnClickListener {
            val fragment = getCurrentGroupFragment()

            if (fragment != null) {
                val selectedProxy = selectedItem?.id ?: DataStore.selectedProxy
                val selectedProfileIndex =
                    fragment.adapter!!.configurationIdList.indexOf(selectedProxy)
                if (selectedProfileIndex != -1) {
                    val layoutManager = fragment.layoutManager
                    val first = layoutManager.findFirstVisibleItemPosition()
                    val last = layoutManager.findLastVisibleItemPosition()

                    if (selectedProfileIndex !in first..last) {
                        fragment.configurationListView.scrollTo(selectedProfileIndex, true)
                        return@setOnClickListener
                    }

                }

                fragment.configurationListView.scrollTo(0)
            }

        }

        DataStore.profileCacheStore.registerChangeListener(this)
    }

    override fun onPreferenceDataStoreChanged(store: PreferenceDataStore, key: String) {
        runOnMainDispatcher {
            // editingGroup
            if (key == Key.PROFILE_GROUP) {
                val targetId = DataStore.editingGroup
                if (targetId > 0 && targetId != DataStore.selectedGroup) {
                    DataStore.selectedGroup = targetId
                    val targetIndex = adapter.groupList.indexOfFirst { it.id == targetId }
                    if (targetIndex >= 0) {
                        groupPager.setCurrentItem(targetIndex, false)
                    } else {
                        adapter.reload()
                    }
                }
            }
        }
    }

    override fun onDestroy() {
        DataStore.profileCacheStore.unregisterChangeListener(this)

        if (::adapter.isInitialized) {
            GroupManager.removeListener(adapter)
            ProfileManager.removeListener(adapter)
        }

        super.onDestroy()
    }

    override fun onKeyDown(ketCode: Int, event: KeyEvent): Boolean {
        val fragment = getCurrentGroupFragment()
        fragment?.configurationListView?.apply {
            if (!hasFocus()) requestFocus()
        }
        return super.onKeyDown(ketCode, event)
    }

    private val importFile =
        registerForActivityResult(ActivityResultContracts.GetContent()) { file ->
            if (file != null) runOnDefaultDispatcher {
                try {
                    val fileName =
                        requireContext().contentResolver.query(file, null, null, null, null)
                            ?.use { cursor ->
                                cursor.moveToFirst()
                                cursor.getColumnIndexOrThrow(OpenableColumns.DISPLAY_NAME)
                                    .let(cursor::getString)
                            }
                    val proxies = mutableListOf<AbstractBean>()
                    if (fileName != null && fileName.endsWith(".zip")) {
                        // try parse wireguard zip
                        val zip =
                            ZipInputStream(requireContext().contentResolver.openInputStream(file)!!)
                        while (true) {
                            val entry = zip.nextEntry ?: break
                            if (entry.isDirectory) continue
                            val fileText = zip.bufferedReader().readText()
                            RawUpdater.parseRaw(fileText, entry.name)
                                ?.let { pl -> proxies.addAll(pl) }
                            zip.closeEntry()
                        }
                        zip.closeQuietly()
                    } else {
                        val fileText =
                            requireContext().contentResolver.openInputStream(file)!!.use {
                                it.bufferedReader().readText()
                            }
                        RawUpdater.parseRaw(fileText, fileName ?: "")
                            ?.let { pl -> proxies.addAll(pl) }
                    }
                    if (proxies.isEmpty()) onMainDispatcher {
                        snackbar(getString(R.string.no_proxies_found_in_file)).show()
                    } else import(proxies)
                } catch (e: SubscriptionFoundException) {
                    (requireActivity() as MainActivity).importSubscription(Uri.parse(e.link))
                } catch (e: Exception) {
                    Logs.w(e)
                    onMainDispatcher {
                        snackbar(e.readableMessage).show()
                    }
                }
            }
        }

    suspend fun import(proxies: List<AbstractBean>) {
        val targetId = DataStore.selectedGroupForImport()
        for (proxy in proxies) {
            ProfileManager.createProfile(targetId, proxy)
        }
        onMainDispatcher {
            DataStore.editingGroup = targetId
            snackbar(
                requireContext().resources.getQuantityString(
                    R.plurals.added, proxies.size, proxies.size
                )
            ).show()
        }

    }

    override fun onMenuItemClick(item: MenuItem): Boolean {
        when (item.itemId) {
            R.id.action_scan_qr_code -> {
                startActivity(Intent(context, ScannerActivity::class.java))
            }
            R.id.action_import_clipboard -> {
                val text = SagerNet.getClipboardText()
                if (text.isBlank()) {
                    snackbar(getString(R.string.clipboard_empty)).show()
                } else runOnDefaultDispatcher {
                    try {
                        val proxies = RawUpdater.parseRaw(text)
                        if (proxies.isNullOrEmpty()) onMainDispatcher {
                            snackbar(getString(R.string.no_proxies_found_in_clipboard)).show()
                        } else import(proxies)
                    } catch (e: SubscriptionFoundException) {
                        (requireActivity() as MainActivity).importSubscription(Uri.parse(e.link))
                    } catch (e: Exception) {
                        Logs.w(e)

                        onMainDispatcher {
                            snackbar(e.readableMessage).show()
                        }
                    }
                }
            }
            R.id.action_import_file -> {
                startFilesForResult(importFile, "*/*")
            }
            R.id.action_new_socks -> {
                startActivity(Intent(requireActivity(), SocksSettingsActivity::class.java))
            }
            R.id.action_new_http -> {
                startActivity(Intent(requireActivity(), HttpSettingsActivity::class.java))
            }
            R.id.action_new_ss -> {
                startActivity(Intent(requireActivity(), ShadowsocksSettingsActivity::class.java))
            }
            R.id.action_new_vmess -> {
                startActivity(Intent(requireActivity(), VMessSettingsActivity::class.java))
            }
            R.id.action_new_vless -> {
                startActivity(Intent(requireActivity(), VMessSettingsActivity::class.java).apply {
                    putExtra("vless", true)
                })
            }
            R.id.action_new_trojan -> {
                startActivity(Intent(requireActivity(), TrojanSettingsActivity::class.java))
            }
            R.id.action_new_trojan_go -> {
                startActivity(Intent(requireActivity(), TrojanGoSettingsActivity::class.java))
            }
            R.id.action_new_naive -> {
                startActivity(Intent(requireActivity(), NaiveSettingsActivity::class.java))
            }
            R.id.action_new_hysteria -> {
                startActivity(Intent(requireActivity(), HysteriaSettingsActivity::class.java))
            }
            R.id.action_new_tuic -> {
                startActivity(Intent(requireActivity(), TuicSettingsActivity::class.java))
            }
            R.id.action_new_ssh -> {
                startActivity(Intent(requireActivity(), SSHSettingsActivity::class.java))
            }
            R.id.action_new_wg -> {
                startActivity(Intent(requireActivity(), WireGuardSettingsActivity::class.java))
            }
            R.id.action_new_shadowtls -> {
                startActivity(Intent(requireActivity(), ShadowTLSSettingsActivity::class.java))
            }
            R.id.action_new_config -> {
                startActivity(Intent(requireActivity(), ConfigSettingActivity::class.java))
            }
            R.id.action_new_chain -> {
                startActivity(Intent(requireActivity(), ChainSettingsActivity::class.java))
            }
            R.id.action_new_neko -> {
                val context = requireContext()
                lateinit var dialog: AlertDialog
                val linearLayout = LinearLayout(context).apply {
                    orientation = LinearLayout.VERTICAL

                    NekoPluginManager.getProtocols().forEach { obj ->
                        LayoutAppsItemBinding.inflate(layoutInflater, this, true).apply {
                            itemcheck.isGone = true
                            button.isGone = false
                            itemicon.setImageDrawable(
                                PackageCache.installedApps[obj.plgId]?.loadIcon(
                                    context.packageManager
                                )
                            )
                            title.text = obj.protocolId
                            desc.text = obj.plgId
                            button.setOnClickListener {
                                dialog.dismiss()
                                val intent = Intent(context, NekoSettingActivity::class.java)
                                intent.putExtra("plgId", obj.plgId)
                                intent.putExtra("protocolId", obj.protocolId)
                                startActivity(intent)
                            }
                        }
                    }
                }
                dialog = MaterialAlertDialogBuilder(context).setTitle(R.string.neko_plugin)
                    .setView(linearLayout)
                    .show()
            }
            R.id.action_clear_traffic_statistics -> {
                runOnDefaultDispatcher {
                    val profiles = SagerDatabase.proxyDao.getByGroup(DataStore.currentGroupId())
                    val toClear = mutableListOf<ProxyEntity>()
                    if (profiles.isNotEmpty()) for (profile in profiles) {
                        if (profile.tx != 0L || profile.rx != 0L) {
                            profile.tx = 0
                            profile.rx = 0
                            toClear.add(profile)
                        }
                    }
                    if (toClear.isNotEmpty()) {
                        ProfileManager.updateProfile(toClear)
                    }
                }
            }
            R.id.action_connection_test_clear_results -> {
                runOnDefaultDispatcher {
                    val profiles = SagerDatabase.proxyDao.getByGroup(DataStore.currentGroupId())
                    val toClear = mutableListOf<ProxyEntity>()
                    if (profiles.isNotEmpty()) for (profile in profiles) {
                        if (profile.status != 0) {
                            profile.status = 0
                            profile.ping = 0
                            profile.error = null
                            toClear.add(profile)
                        }
                    }
                    if (toClear.isNotEmpty()) {
                        ProfileManager.updateProfile(toClear)
                    }
                }
            }
            R.id.action_connection_test_delete_unavailable -> {
                runOnDefaultDispatcher {
                    val profiles = SagerDatabase.proxyDao.getByGroup(DataStore.currentGroupId())
                    val toClear = mutableListOf<ProxyEntity>()
                    if (profiles.isNotEmpty()) for (profile in profiles) {
                        if (profile.status != 0 && profile.status != 1) {
                            toClear.add(profile)
                        }
                    }
                    if (toClear.isNotEmpty()) {
                        onMainDispatcher {
                            MaterialAlertDialogBuilder(requireContext()).setTitle(R.string.confirm)
                                .setMessage(R.string.delete_confirm_prompt)
                                .setPositiveButton(R.string.yes) { _, _ ->
                                    for (profile in toClear) {
                                        adapter.groupFragments[DataStore.selectedGroup]?.adapter?.apply {
                                            val index = configurationIdList.indexOf(profile.id)
                                            if (index >= 0) {
                                                configurationIdList.removeAt(index)
                                                configurationList.remove(profile.id)
                                                notifyItemRemoved(index)
                                            }
                                        }
                                    }
                                    runOnDefaultDispatcher {
                                        for (profile in toClear) {
                                            ProfileManager.deleteProfile2(
                                                profile.groupId, profile.id
                                            )
                                        }
                                    }
                                }
                                .setNegativeButton(R.string.no, null)
                                .show()
                        }
                    }
                }
            }
            R.id.action_connection_icmp_ping -> {
                pingTest(true)
            }
            R.id.action_connection_tcp_ping -> {
                pingTest(false)
            }
            R.id.action_connection_url_test -> {
                urlTest()
            }
        }
        return true
    }

    inner class TestDialog {
        val binding = LayoutProgressListBinding.inflate(layoutInflater)
        val builder = MaterialAlertDialogBuilder(requireContext()).setView(binding.root)
            .setNegativeButton(android.R.string.cancel) { _, _ ->
                cancel()
            }
            .setOnDismissListener {
                cancel()
            }
            .setCancelable(false)

        lateinit var cancel: () -> Unit
        val fragment by lazy { getCurrentGroupFragment() }
        val results = Collections.synchronizedList(mutableListOf<ProxyEntity?>())
        var proxyN = 0
        val finishedN = AtomicInteger(0)

        suspend fun insert(profile: ProxyEntity?) {
            results.add(profile)
        }

        suspend fun update(profile: ProxyEntity) {
            fragment?.configurationListView?.post {
                var profileStatusText: String? = null
                var profileStatusColor = 0

                when (profile.status) {
                    -1 -> {
                        profileStatusText = profile.error
                        profileStatusColor =
                            requireContext().getColorAttr(android.R.attr.textColorSecondary)
                    }
                    0 -> {
                        profileStatusText = getString(R.string.connection_test_testing)
                        profileStatusColor =
                            requireContext().getColorAttr(android.R.attr.textColorSecondary)
                    }
                    1 -> {
                        profileStatusText = getString(R.string.available, profile.ping)
                        profileStatusColor = requireContext().getColour(R.color.material_green_500)
                    }
                    2 -> {
                        profileStatusText = profile.error
                        profileStatusColor = requireContext().getColour(R.color.material_red_500)
                    }
                    3 -> {
                        val err = profile.error ?: ""
                        val msg = Protocols.genFriendlyMsg(err)
                        profileStatusText = if (msg != err) msg else getString(R.string.unavailable)
                        profileStatusColor = requireContext().getColour(R.color.material_red_500)
                    }
                }

                val text = SpannableStringBuilder().apply {
                    append("\n" + profile.displayName())
                    append("\n")
                    append(
                        profile.displayType(),
                        ForegroundColorSpan(requireContext().getProtocolColor(profile.type)),
                        SPAN_EXCLUSIVE_EXCLUSIVE
                    )
                    append(" ")
                    append(
                        profileStatusText,
                        ForegroundColorSpan(profileStatusColor),
                        SPAN_EXCLUSIVE_EXCLUSIVE
                    )
                    append("\n")
                }

                binding.nowTesting.text = text
                binding.progress.text = "${finishedN.addAndGet(1)} / $proxyN"
            }
        }

    }

    fun stopService() {
        if (DataStore.serviceState.started) SagerNet.stopService()
    }

    @Suppress("EXPERIMENTAL_API_USAGE")
    fun pingTest(icmpPing: Boolean) {
        val test = TestDialog()
        val testJobs = mutableListOf<Job>()
        val dialog = test.builder.show()
        val mainJob = runOnDefaultDispatcher {
            if (DataStore.serviceState.started) {
                stopService()
                delay(500) // wait for service stop
            }
            val group = DataStore.currentGroup()
            val profilesUnfiltered = SagerDatabase.proxyDao.getByGroup(group.id)
            test.proxyN = profilesUnfiltered.size
            val profiles = ConcurrentLinkedQueue(profilesUnfiltered)
            val testPool = newFixedThreadPoolContext(5, "Connection test pool")
            repeat(5) {
                testJobs.add(launch(testPool) {
                    while (isActive) {
                        val profile = profiles.poll() ?: break

                        if (icmpPing) {
                            if (!profile.requireBean().canICMPing()) {
                                profile.status = -1
                                profile.error =
                                    app.getString(R.string.connection_test_icmp_ping_unavailable)
                                test.insert(profile)
                                continue
                            }
                        } else {
                            if (!profile.requireBean().canTCPing()) {
                                profile.status = -1
                                profile.error =
                                    app.getString(R.string.connection_test_tcp_ping_unavailable)
                                test.insert(profile)
                                continue
                            }
                        }

                        profile.status = 0
                        test.insert(profile)
                        var address = profile.requireBean().serverAddress
                        if (!address.isIpAddress()) {
                            try {
                                InetAddress.getAllByName(address).apply {
                                    if (isNotEmpty()) {
                                        address = this[0].hostAddress
                                    }
                                }
                            } catch (ignored: UnknownHostException) {
                            }
                        }
                        if (!isActive) break
                        if (!address.isIpAddress()) {
                            profile.status = 2
                            profile.error = app.getString(R.string.connection_test_domain_not_found)
                            test.update(profile)
                            continue
                        }
                        try {
                            if (icmpPing) {
                                // removed
                            } else {
                                val socket = Socket()
                                try {
                                    socket.soTimeout = 3000
                                    socket.bind(InetSocketAddress(0))
                                    val start = SystemClock.elapsedRealtime()
                                    socket.connect(
                                        InetSocketAddress(
                                            address, profile.requireBean().serverPort
                                        ), 3000
                                    )
                                    if (!isActive) break
                                    profile.status = 1
                                    profile.ping = (SystemClock.elapsedRealtime() - start).toInt()
                                    test.update(profile)
                                } finally {
                                    socket.closeQuietly()
                                }
                            }
                        } catch (e: Exception) {
                            if (!isActive) break
                            val message = e.readableMessage

                            if (icmpPing) {
                                profile.status = 2
                                profile.error = getString(R.string.connection_test_unreachable)
                            } else {
                                profile.status = 2
                                when {
                                    !message.contains("failed:") -> profile.error =
                                        getString(R.string.connection_test_timeout)
                                    else -> when {
                                        message.contains("ECONNREFUSED") -> {
                                            profile.error =
                                                getString(R.string.connection_test_refused)
                                        }
                                        message.contains("ENETUNREACH") -> {
                                            profile.error =
                                                getString(R.string.connection_test_unreachable)
                                        }
                                        else -> {
                                            profile.status = 3
                                            profile.error = message
                                        }
                                    }
                                }
                            }
                            test.update(profile)
                        }
                    }
                })
            }

            testJobs.joinAll()
            testPool.close()

            onMainDispatcher {
                dialog.dismiss()
            }
        }
        test.cancel = {
            runOnDefaultDispatcher {
                test.results.filterNotNull().forEach {
                    try {
                        ProfileManager.updateProfile(it)
                    } catch (e: Exception) {
                        Logs.w(e)
                    }
                }
                GroupManager.postReload(DataStore.currentGroupId())
                mainJob.cancel()
                testJobs.forEach { it.cancel() }
            }
        }
    }

    fun urlTest() {
        val test = TestDialog()
        val dialog = test.builder.show()
        val testJobs = mutableListOf<Job>()

        val mainJob = runOnDefaultDispatcher {
            if (DataStore.serviceState.started) {
                stopService()
                delay(500) // wait for service stop
            }
            val group = DataStore.currentGroup()
            val profilesUnfiltered = SagerDatabase.proxyDao.getByGroup(group.id)
            test.proxyN = profilesUnfiltered.size
            val profiles = ConcurrentLinkedQueue(profilesUnfiltered)
            val urlTest = UrlTest() // note: this is NOT in bg process

            repeat(5) {
                testJobs.add(launch {
                    while (isActive) {
                        val profile = profiles.poll() ?: break
                        profile.status = 0
                        test.insert(profile)

                        try {
                            val result = urlTest.doTest(profile)
                            profile.status = 1
                            profile.ping = result
                        } catch (e: PluginManager.PluginNotFoundException) {
                            profile.status = 2
                            profile.error = e.readableMessage
                        } catch (e: Exception) {
                            profile.status = 3
                            profile.error = e.readableMessage
                        }

                        test.update(profile)
                    }
                })
            }

            testJobs.joinAll()

            onMainDispatcher {
                dialog.dismiss()
            }
        }
        test.cancel = {
            runOnDefaultDispatcher {
                test.results.filterNotNull().forEach {
                    try {
                        ProfileManager.updateProfile(it)
                    } catch (e: Exception) {
                        Logs.w(e)
                    }
                }
                GroupManager.postReload(DataStore.currentGroupId())
                NekoJSInterface.Default.destroyAllJsi()
                mainJob.cancel()
                testJobs.forEach { it.cancel() }
            }
        }
    }

    inner class GroupPagerAdapter : FragmentStateAdapter(this),
        ProfileManager.Listener,
        GroupManager.Listener {

        var selectedGroupIndex = 0
        var groupList: ArrayList<ProxyGroup> = ArrayList()
        var groupFragments: HashMap<Long, GroupFragment> = HashMap()

        fun reload(now: Boolean = false) {

            if (!select) {
                groupPager.unregisterOnPageChangeCallback(updateSelectedCallback)
            }

            runOnDefaultDispatcher {
                var newGroupList = ArrayList(SagerDatabase.groupDao.allGroups())
                if (newGroupList.isEmpty()) {
                    SagerDatabase.groupDao.createGroup(ProxyGroup(ungrouped = true))
                    newGroupList = ArrayList(SagerDatabase.groupDao.allGroups())
                }
                newGroupList.find { it.ungrouped }?.let {
                    if (SagerDatabase.proxyDao.countByGroup(it.id) == 0L) {
                        newGroupList.remove(it)
                    }
                }

                var selectedGroup = selectedItem?.groupId ?: DataStore.currentGroupId()
                var set = false
                if (selectedGroup > 0L) {
                    selectedGroupIndex = newGroupList.indexOfFirst { it.id == selectedGroup }
                    set = true
                } else if (groupList.size == 1) {
                    selectedGroup = groupList[0].id
                    if (DataStore.selectedGroup != selectedGroup) {
                        DataStore.selectedGroup = selectedGroup
                    }
                }

                val runFunc = if (now) requireActivity()::runOnUiThread else groupPager::post
                runFunc {
                    groupList = newGroupList
                    notifyDataSetChanged()
                    if (set) groupPager.setCurrentItem(selectedGroupIndex, false)
                    val hideTab = groupList.size < 2
                    tabLayout.isGone = hideTab
                    toolbar.elevation = if (hideTab) 0F else dp2px(4).toFloat()
                    if (!select) {
                        groupPager.registerOnPageChangeCallback(updateSelectedCallback)
                    }
                }
            }
        }

        init {
            reload(true)
        }

        override fun getItemCount(): Int {
            return groupList.size
        }

        override fun createFragment(position: Int): Fragment {
            return GroupFragment().apply {
                proxyGroup = groupList[position]
                groupFragments[proxyGroup.id] = this
                if (position == selectedGroupIndex) {
                    selected = true
                }
            }
        }

        override fun getItemId(position: Int): Long {
            return groupList[position].id
        }

        override fun containsItem(itemId: Long): Boolean {
            return groupList.any { it.id == itemId }
        }

        override suspend fun groupAdd(group: ProxyGroup) {
            tabLayout.post {
                groupList.add(group)

                if (groupList.any { !it.ungrouped }) tabLayout.post {
                    tabLayout.visibility = View.VISIBLE
                }

                notifyItemInserted(groupList.size - 1)
                tabLayout.getTabAt(groupList.size - 1)?.select()
            }
        }

        override suspend fun groupRemoved(groupId: Long) {
            val index = groupList.indexOfFirst { it.id == groupId }
            if (index == -1) return

            tabLayout.post {
                groupList.removeAt(index)
                notifyItemRemoved(index)
            }
        }

        override suspend fun groupUpdated(group: ProxyGroup) {
            val index = groupList.indexOfFirst { it.id == group.id }
            if (index == -1) return

            tabLayout.post {
                tabLayout.getTabAt(index)?.text = group.displayName()
            }
        }

        override suspend fun groupUpdated(groupId: Long) = Unit

        override suspend fun onAdd(profile: ProxyEntity) {
            if (groupList.find { it.id == profile.groupId } == null) {
                DataStore.selectedGroup = profile.groupId
                reload()
            }
        }

        override suspend fun onUpdated(data: TrafficData) = Unit

        override suspend fun onUpdated(profile: ProxyEntity) = Unit

        override suspend fun onRemoved(groupId: Long, profileId: Long) {
            val group = groupList.find { it.id == groupId } ?: return
            if (group.ungrouped && SagerDatabase.proxyDao.countByGroup(groupId) == 0L) {
                reload()
            }
        }
    }

    class GroupFragment : Fragment() {

        lateinit var proxyGroup: ProxyGroup
        var selected = false

        override fun onCreateView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            savedInstanceState: Bundle?,
        ): View {
            return LayoutProfileListBinding.inflate(inflater).root
        }

        lateinit var undoManager: UndoSnackbarManager<ProxyEntity>
        var adapter: ConfigurationAdapter? = null

        override fun onSaveInstanceState(outState: Bundle) {
            super.onSaveInstanceState(outState)

            if (::proxyGroup.isInitialized) {
                outState.putParcelable("proxyGroup", proxyGroup)
            }
        }

        override fun onViewStateRestored(savedInstanceState: Bundle?) {
            super.onViewStateRestored(savedInstanceState)

            savedInstanceState?.getParcelable<ProxyGroup>("proxyGroup")?.also {
                proxyGroup = it
                onViewCreated(requireView(), null)
            }
        }

        private val isEnabled: Boolean
            get() {
                return DataStore.serviceState.let { it.canStop || it == BaseService.State.Stopped }
            }

        lateinit var layoutManager: LinearLayoutManager
        lateinit var configurationListView: RecyclerView

        val select by lazy {
            try {
                (parentFragment as ConfigurationFragment).select
            } catch (e: Exception) {
                Logs.e(e)
                false
            }
        }
        val selectedItem by lazy {
            try {
                (parentFragment as ConfigurationFragment).selectedItem
            } catch (e: Exception) {
                Logs.e(e)
                null
            }
        }

        override fun onResume() {
            super.onResume()

            if (::configurationListView.isInitialized && configurationListView.size == 0) {
                configurationListView.adapter = adapter
                runOnDefaultDispatcher {
                    adapter?.reloadProfiles()
                }
            } else if (!::configurationListView.isInitialized) {
                onViewCreated(requireView(), null)
            }
            checkOrderMenu()
            configurationListView.requestFocus()
        }

        fun checkOrderMenu() {
            if (select) return

            val pf = requireParentFragment() as? ToolbarFragment ?: return
            val menu = pf.toolbar.menu
            val origin = menu.findItem(R.id.action_order_origin)
            val byName = menu.findItem(R.id.action_order_by_name)
            val byDelay = menu.findItem(R.id.action_order_by_delay)
            when (proxyGroup.order) {
                GroupOrder.ORIGIN -> {
                    origin.isChecked = true
                }
                GroupOrder.BY_NAME -> {
                    byName.isChecked = true
                }
                GroupOrder.BY_DELAY -> {
                    byDelay.isChecked = true
                }
            }

            fun updateTo(order: Int) {
                if (proxyGroup.order == order) return
                runOnDefaultDispatcher {
                    proxyGroup.order = order
                    GroupManager.updateGroup(proxyGroup)
                }
            }

            origin.setOnMenuItemClickListener {
                it.isChecked = true
                updateTo(GroupOrder.ORIGIN)
                true
            }
            byName.setOnMenuItemClickListener {
                it.isChecked = true
                updateTo(GroupOrder.BY_NAME)
                true
            }
            byDelay.setOnMenuItemClickListener {
                it.isChecked = true
                updateTo(GroupOrder.BY_DELAY)
                true
            }
        }

        override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
            if (!::proxyGroup.isInitialized) return

            configurationListView = view.findViewById(R.id.configuration_list)
            layoutManager = FixedLinearLayoutManager(configurationListView)
            configurationListView.layoutManager = layoutManager
            adapter = ConfigurationAdapter()
            ProfileManager.addListener(adapter!!)
            GroupManager.addListener(adapter!!)
            configurationListView.adapter = adapter
            configurationListView.setItemViewCacheSize(20)

            if (!select) {

                undoManager = UndoSnackbarManager(activity as MainActivity, adapter!!)

                ItemTouchHelper(object : ItemTouchHelper.SimpleCallback(
                    ItemTouchHelper.UP or ItemTouchHelper.DOWN, ItemTouchHelper.START
                ) {
                    override fun getSwipeDirs(
                        recyclerView: RecyclerView,
                        viewHolder: RecyclerView.ViewHolder,
                    ): Int {
                        return 0
                    }

                    override fun getDragDirs(
                        recyclerView: RecyclerView,
                        viewHolder: RecyclerView.ViewHolder,
                    ) = if (isEnabled) super.getDragDirs(recyclerView, viewHolder) else 0

                    override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
                    }

                    override fun onMove(
                        recyclerView: RecyclerView,
                        viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder,
                    ): Boolean {
                        adapter?.move(
                            viewHolder.bindingAdapterPosition, target.bindingAdapterPosition
                        )
                        return true
                    }

                    override fun clearView(
                        recyclerView: RecyclerView,
                        viewHolder: RecyclerView.ViewHolder,
                    ) {
                        super.clearView(recyclerView, viewHolder)
                        adapter?.commitMove()
                    }
                }).attachToRecyclerView(configurationListView)

            }

        }

        override fun onDestroy() {
            adapter?.let {
                ProfileManager.removeListener(it)
                GroupManager.removeListener(it)
            }

            super.onDestroy()

            if (!::undoManager.isInitialized) return
            undoManager.flush()
        }

        inner class ConfigurationAdapter : RecyclerView.Adapter<ConfigurationHolder>(),
            ProfileManager.Listener,
            GroupManager.Listener,
            UndoSnackbarManager.Interface<ProxyEntity> {

            init {
                setHasStableIds(true)
            }

            var configurationIdList: MutableList<Long> = mutableListOf()
            val configurationList = HashMap<Long, ProxyEntity>()

            private fun getItem(profileId: Long): ProxyEntity {
                var profile = configurationList[profileId]
                if (profile == null) {
                    profile = ProfileManager.getProfile(profileId)
                    if (profile != null) {
                        configurationList[profileId] = profile
                    }
                }
                return profile!!
            }

            private fun getItemAt(index: Int) = getItem(configurationIdList[index])

            override fun onCreateViewHolder(
                parent: ViewGroup,
                viewType: Int,
            ): ConfigurationHolder {
                return ConfigurationHolder(
                    LayoutInflater.from(parent.context)
                        .inflate(R.layout.layout_profile, parent, false)
                )
            }

            override fun getItemId(position: Int): Long {
                return configurationIdList[position]
            }

            override fun onBindViewHolder(holder: ConfigurationHolder, position: Int) {
                try {
                    holder.bind(getItemAt(position))
                } catch (ignored: NullPointerException) { // when group deleted
                }
            }

            override fun getItemCount(): Int {
                return configurationIdList.size
            }

            private val updated = HashSet<ProxyEntity>()

            fun filter(name: String) {
                if (name.isEmpty()) {
                    reloadProfiles()
                    return
                }
                configurationIdList.clear()
                val lower = name.lowercase()
                configurationIdList.addAll(configurationList.filter {
                    it.value.displayName().lowercase().contains(lower) ||
                            it.value.displayType().lowercase().contains(lower) ||
                            it.value.displayAddress().lowercase().contains(lower)
                }.keys)
                notifyDataSetChanged()
            }

            fun move(from: Int, to: Int) {
                val first = getItemAt(from)
                var previousOrder = first.userOrder
                val (step, range) = if (from < to) Pair(1, from until to) else Pair(
                    -1, to + 1 downTo from
                )
                for (i in range) {
                    val next = getItemAt(i + step)
                    val order = next.userOrder
                    next.userOrder = previousOrder
                    previousOrder = order
                    configurationIdList[i] = next.id
                    updated.add(next)
                }
                first.userOrder = previousOrder
                configurationIdList[to] = first.id
                updated.add(first)
                notifyItemMoved(from, to)
            }

            fun commitMove() = runOnDefaultDispatcher {
                updated.forEach { SagerDatabase.proxyDao.updateProxy(it) }
                updated.clear()
            }

            fun remove(pos: Int) {
                if (pos < 0) return
                configurationIdList.removeAt(pos)
                notifyItemRemoved(pos)
            }

            override fun undo(actions: List<Pair<Int, ProxyEntity>>) {
                for ((index, item) in actions) {
                    configurationListView.post {
                        configurationList[item.id] = item
                        configurationIdList.add(index, item.id)
                        notifyItemInserted(index)
                    }
                }
            }

            override fun commit(actions: List<Pair<Int, ProxyEntity>>) {
                val profiles = actions.map { it.second }
                runOnDefaultDispatcher {
                    for (entity in profiles) {
                        ProfileManager.deleteProfile(entity.groupId, entity.id)
                    }
                }
            }

            override suspend fun onAdd(profile: ProxyEntity) {
                if (profile.groupId != proxyGroup.id) return

                configurationListView.post {
                    if (::undoManager.isInitialized) {
                        undoManager.flush()
                    }
                    val pos = itemCount
                    configurationList[profile.id] = profile
                    configurationIdList.add(profile.id)
                    notifyItemInserted(pos)
                }
            }

            override suspend fun onUpdated(profile: ProxyEntity) {
                if (profile.groupId != proxyGroup.id) return
                val index = configurationIdList.indexOf(profile.id)
                if (index < 0) return
                configurationListView.post {
                    if (::undoManager.isInitialized) {
                        undoManager.flush()
                    }
                    val oldProfile = configurationList[profile.id]
                    configurationList[profile.id] = profile
                    notifyItemChanged(index)
                }
            }

            override suspend fun onUpdated(data: TrafficData) {
                val index = configurationIdList.indexOf(data.id)
                if (index != -1) {
                    val holder = layoutManager.findViewByPosition(index)
                        ?.let { configurationListView.getChildViewHolder(it) } as ConfigurationHolder?
                    if (holder != null) {
                        onMainDispatcher {
                            holder.bind(holder.entity, data)
                        }
                    }
                }
            }

            override suspend fun onRemoved(groupId: Long, profileId: Long) {
                if (groupId != proxyGroup.id) return
                val index = configurationIdList.indexOf(profileId)
                if (index < 0) return

                configurationListView.post {
                    configurationIdList.removeAt(index)
                    configurationList.remove(profileId)
                    notifyItemRemoved(index)
                }
            }

            override suspend fun groupAdd(group: ProxyGroup) = Unit
            override suspend fun groupRemoved(groupId: Long) = Unit

            override suspend fun groupUpdated(group: ProxyGroup) {
                if (group.id != proxyGroup.id) return
                proxyGroup = group
                reloadProfiles()
            }

            override suspend fun groupUpdated(groupId: Long) {
                if (groupId != proxyGroup.id) return
                proxyGroup = SagerDatabase.groupDao.getById(groupId)!!
                reloadProfiles()
            }

            fun reloadProfiles() {
                var newProfiles = SagerDatabase.proxyDao.getByGroup(proxyGroup.id)
                val subscription = proxyGroup.subscription
                when (proxyGroup.order) {
                    GroupOrder.BY_NAME -> {
                        newProfiles = newProfiles.sortedBy { it.displayName() }

                    }
                    GroupOrder.BY_DELAY -> {
                        newProfiles =
                            newProfiles.sortedBy { if (it.status == 1) it.ping else 114514 }
                    }
                }

                configurationList.clear()
                configurationList.putAll(newProfiles.associateBy { it.id })
                val newProfileIds = newProfiles.map { it.id }

                var selectedProfileIndex = -1

                if (selected) {
                    val selectedProxy = selectedItem?.id ?: DataStore.selectedProxy
                    selectedProfileIndex = newProfileIds.indexOf(selectedProxy)
                }

                configurationListView.post {
                    configurationIdList.clear()
                    configurationIdList.addAll(newProfileIds)
                    notifyDataSetChanged()

                    if (selectedProfileIndex != -1) {
                        configurationListView.scrollTo(selectedProfileIndex, true)
                    } else if (newProfiles.isNotEmpty()) {
                        configurationListView.scrollTo(0, true)
                    }

                }
            }

        }

        val profileAccess = Mutex()
        val reloadAccess = Mutex()

        inner class ConfigurationHolder(val view: View) : RecyclerView.ViewHolder(view),
            PopupMenu.OnMenuItemClickListener {

            lateinit var entity: ProxyEntity

            val profileName: TextView = view.findViewById(R.id.profile_name)
            val profileType: TextView = view.findViewById(R.id.profile_type)
            val profileAddress: TextView = view.findViewById(R.id.profile_address)
            val profileStatus: TextView = view.findViewById(R.id.profile_status)

            val trafficText: TextView = view.findViewById(R.id.traffic_text)
            val selectedView: LinearLayout = view.findViewById(R.id.selected_view)
            val editButton: ImageView = view.findViewById(R.id.edit)
            val shareLayout: LinearLayout = view.findViewById(R.id.share)
            val shareLayer: LinearLayout = view.findViewById(R.id.share_layer)
            val shareButton: ImageView = view.findViewById(R.id.shareIcon)
            val removeButton: ImageView = view.findViewById(R.id.remove)

            fun bind(proxyEntity: ProxyEntity, trafficData: TrafficData? = null) {
                val pf = parentFragment as? ConfigurationFragment ?: return

                entity = proxyEntity

                if (select) {
                    view.setOnClickListener {
                        (requireActivity() as SelectCallback).returnProfile(proxyEntity.id)
                    }
                } else {
                    view.setOnClickListener {
                        runOnDefaultDispatcher {
                            var update: Boolean
                            var lastSelected: Long
                            profileAccess.withLock {
                                update = DataStore.selectedProxy != proxyEntity.id
                                lastSelected = DataStore.selectedProxy
                                DataStore.selectedProxy = proxyEntity.id
                                onMainDispatcher {
                                    selectedView.visibility = View.VISIBLE
                                }
                            }

                            if (update) {
                                ProfileManager.postUpdate(lastSelected)
                                if (DataStore.serviceState.canStop && reloadAccess.tryLock()) {
                                    SagerNet.reloadService()
                                    reloadAccess.unlock()
                                }
                            } else if (SagerNet.isTv) {
                                if (DataStore.serviceState.started) {
                                    SagerNet.stopService()
                                } else {
                                    SagerNet.startService()
                                }
                            }
                        }

                    }
                }

                profileName.text = proxyEntity.displayName()
                profileType.text = proxyEntity.displayType()
                profileType.setTextColor(requireContext().getProtocolColor(proxyEntity.type))

                var rx = proxyEntity.rx
                var tx = proxyEntity.tx
                if (trafficData != null) {
                    // use new data
                    tx = trafficData.tx
                    rx = trafficData.rx
                }

                val showTraffic = rx + tx != 0L
                trafficText.isVisible = showTraffic
                if (showTraffic) {
                    trafficText.text = view.context.getString(
                        R.string.traffic,
                        Formatter.formatFileSize(view.context, tx),
                        Formatter.formatFileSize(view.context, rx)
                    )
                }

                var address = proxyEntity.displayAddress()
                if (showTraffic && address.length >= 30) {
                    address = address.substring(0, 27) + "..."
                }

                if (proxyEntity.requireBean().name.isBlank() || !pf.alwaysShowAddress) {
                    address = ""
                }

                profileAddress.text = address
                (trafficText.parent as View).isGone =
                    (!showTraffic || proxyEntity.status <= 0) && address.isBlank()

                if (proxyEntity.status <= 0) {
                    if (showTraffic) {
                        profileStatus.text = trafficText.text
                        profileStatus.setTextColor(requireContext().getColorAttr(android.R.attr.textColorSecondary))
                        trafficText.text = ""
                    } else {
                        profileStatus.text = ""
                    }
                } else if (proxyEntity.status == 1) {
                    profileStatus.text = getString(R.string.available, proxyEntity.ping)
                    profileStatus.setTextColor(requireContext().getColour(R.color.material_green_500))
                } else {
                    profileStatus.setTextColor(requireContext().getColour(R.color.material_red_500))
                    if (proxyEntity.status == 2) {
                        profileStatus.text = proxyEntity.error
                    }
                }

                if (proxyEntity.status == 3) {
                    val err = proxyEntity.error ?: "<?>"
                    val msg = Protocols.genFriendlyMsg(err)
                    profileStatus.text = if (msg != err) msg else getString(R.string.unavailable)
                    profileStatus.setOnClickListener {
                        alert(err).show()
                    }
                } else {
                    profileStatus.setOnClickListener(null)
                }

                editButton.setOnClickListener {
                    it.context.startActivity(
                        proxyEntity.settingIntent(
                            it.context, proxyGroup.type == GroupType.SUBSCRIPTION
                        )
                    )
                }

                removeButton.setOnClickListener {
                    adapter?.let {
                        val index = it.configurationIdList.indexOf(proxyEntity.id)
                        it.remove(index)
                        undoManager.remove(index to proxyEntity)
                    }
                }

                val selectOrChain = select || proxyEntity.type == ProxyEntity.TYPE_CHAIN
                shareLayout.isGone = selectOrChain
                editButton.isGone = select
                removeButton.isGone = select

                proxyEntity.nekoBean?.apply {
                    shareLayout.isGone = !canShare()
                }

                runOnDefaultDispatcher {
                    val selected = (selectedItem?.id ?: DataStore.selectedProxy) == proxyEntity.id
                    val started =
                        selected && DataStore.serviceState.started && DataStore.currentProfile == proxyEntity.id
                    onMainDispatcher {
                        editButton.isEnabled = !started
                        removeButton.isEnabled = !started
                        selectedView.visibility = if (selected) View.VISIBLE else View.INVISIBLE
                    }

                    fun showShare(anchor: View) {
                        val popup = PopupMenu(requireContext(), anchor)
                        popup.menuInflater.inflate(R.menu.profile_share_menu, popup.menu)

                        when {
                            !proxyEntity.haveStandardLink() -> {
                                popup.menu.findItem(R.id.action_group_qr).subMenu?.removeItem(R.id.action_standard_qr)
                                popup.menu.findItem(R.id.action_group_clipboard).subMenu?.removeItem(
                                    R.id.action_standard_clipboard
                                )
                            }
                            !proxyEntity.haveLink() -> {
                                popup.menu.removeItem(R.id.action_group_qr)
                                popup.menu.removeItem(R.id.action_group_clipboard)
                            }
                        }

                        if (proxyEntity.nekoBean != null) {
                            popup.menu.removeItem(R.id.action_group_configuration)
                        }

                        popup.setOnMenuItemClickListener(this@ConfigurationHolder)
                        popup.show()
                    }

                    if (!(select || proxyEntity.type == ProxyEntity.TYPE_CHAIN)) {
                        onMainDispatcher {
                            shareLayer.setBackgroundColor(Color.TRANSPARENT)
                            shareButton.setImageResource(R.drawable.ic_social_share)
                            shareButton.setColorFilter(Color.GRAY)
                            shareButton.isVisible = true

                            shareLayout.setOnClickListener {
                                showShare(it)
                            }
                        }
                    }
                }

            }

            var currentName = ""
            fun showCode(link: String) {
                QRCodeDialog(link, currentName).showAllowingStateLoss(parentFragmentManager)
            }

            fun export(link: String) {
                val success = SagerNet.trySetPrimaryClip(link)
                (activity as MainActivity).snackbar(if (success) R.string.action_export_msg else R.string.action_export_err)
                    .show()
            }

            override fun onMenuItemClick(item: MenuItem): Boolean {
                try {
                    currentName = entity.displayName()!!
                    when (item.itemId) {
                        R.id.action_standard_qr -> showCode(entity.toStdLink()!!)
                        R.id.action_standard_clipboard -> export(entity.toStdLink()!!)
                        R.id.action_universal_qr -> showCode(entity.requireBean().toUniversalLink())
                        R.id.action_universal_clipboard -> export(
                            entity.requireBean().toUniversalLink()
                        )
                        R.id.action_config_export_clipboard -> export(entity.exportConfig().first)
                        R.id.action_config_export_file -> {
                            val cfg = entity.exportConfig()
                            DataStore.serverConfig = cfg.first
                            startFilesForResult(
                                (parentFragment as ConfigurationFragment).exportConfig, cfg.second
                            )
                        }
                    }
                } catch (e: Exception) {
                    Logs.w(e)
                    (activity as MainActivity).snackbar(e.readableMessage).show()
                    return true
                }
                return true
            }
        }

    }

    private val exportConfig =
        registerForActivityResult(ActivityResultContracts.CreateDocument()) { data ->
            if (data != null) {
                runOnDefaultDispatcher {
                    try {
                        (requireActivity() as MainActivity).contentResolver.openOutputStream(data)!!
                            .bufferedWriter()
                            .use {
                                it.write(DataStore.serverConfig)
                            }
                        onMainDispatcher {
                            snackbar(getString(R.string.action_export_msg)).show()
                        }
                    } catch (e: Exception) {
                        Logs.w(e)
                        onMainDispatcher {
                            snackbar(e.readableMessage).show()
                        }
                    }

                }
            }
        }

}