package org.mjdev.desktop.context

import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.unit.DpSize
import androidx.compose.ui.unit.dp
import coil3.Bitmap
import coil3.ImageLoader
import coil3.PlatformContext
import coil3.compose.LocalPlatformContext
import coil3.request.ImageRequest
import coil3.toBitmap
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import okio.Path
import org.mjdev.desktop.data.Category
import org.mjdev.desktop.data.User
import org.mjdev.desktop.extensions.Compose.isDesign
import org.mjdev.desktop.helpers.application.ApplicationScope
import org.mjdev.desktop.helpers.image.ImageLoader.asyncImageLoader
import org.mjdev.desktop.managers.palette.Palette
import org.mjdev.desktop.helpers.system.shell.Shell
import org.mjdev.desktop.interfaces.IApp
import org.mjdev.desktop.managers.connectivity.IConnectivityManager
import org.mjdev.desktop.interfaces.IDesktopContext
import org.mjdev.desktop.interfaces.IPalette
import org.mjdev.desktop.interfaces.ITheme
import org.mjdev.desktop.interfaces.IUser
import org.mjdev.desktop.managers.language.Translator
import org.mjdev.desktop.log.Log
import org.mjdev.desktop.managers.ai.AiManager
import org.mjdev.desktop.managers.ai.base.IAiManager
import org.mjdev.desktop.managers.ai.plugins.AiPluginGemini
import org.mjdev.desktop.managers.ai.stt.STTPluginEmpty
import org.mjdev.desktop.managers.ai.tts.TTSPluginDesktop
import org.mjdev.desktop.managers.ai.tts.TTSPluginSwift
import org.mjdev.desktop.managers.apps.IAppsManager
import org.mjdev.desktop.managers.os.IOSManager
import org.mjdev.desktop.managers.process.IProcessManager
import org.mjdev.desktop.managers.theme.IThemeManager
import org.mjdev.desktop.managers.translations.ITranslator
import org.mjdev.desktop.managers.apps.AppsManager
import org.mjdev.desktop.managers.base.IDelegate
import org.mjdev.desktop.managers.connectivity.ConnectivityManager
import org.mjdev.desktop.managers.keys.IKeyManager
import org.mjdev.desktop.managers.os.OsManager
import org.mjdev.desktop.managers.processes.ProcessManager
import org.mjdev.desktop.managers.theme.ThemeManager
import java.awt.Desktop
import java.awt.Toolkit
import java.io.File
import java.net.URI
import kotlin.coroutines.CoroutineContext
import kotlin.reflect.KClass
import kotlin.reflect.full.companionObject
import org.mjdev.desktop.managers.keys.KeysManager

class DesktopContext(
    val application: ApplicationScope? = null,
    override val scope: CoroutineScope = CoroutineScope(Dispatchers.Default),
    override val imageLoader: ImageLoader? = null,
    val isInDesign: Boolean = false,
    override val platformContext: PlatformContext? = null
) : IDesktopContext() {
    private val toolkit: Toolkit by lazy { Toolkit.getDefaultToolkit() }
    private val desktopUtils: Desktop by lazy { Desktop.getDesktop() }
    //    val windowsManager by lazy { WindowsManager(this) }
    //    val dbus: DBus by lazy { DBus() }

    override var isFirstStart: Boolean = true // todo
    override var isInstalled: Boolean = false // todo
    override val appArgs: List<String>
        get() = application?.args ?: emptyList()

    override val isDebug: Boolean
        get() = appArgs.contains(APP_PARAM_DEBUG) || isInDesign

    val allUsers
        get() = User.allUsers(this)
    override val currentLocale
        get() = appsManager.currentLocale
    override val machineName
        get() = osManager.machineName
    override val allApps: List<IApp>
        get() = appsManager.allApps
    override val appCategories: List<Category>
        get() = appsManager.categories
    override val favoriteApps: List<IApp>
        get() = appsManager.favoriteApps

    override suspend fun open(what: Any?) {
        open(what.toString())
    }

    // todo state
    override val currentUser: IUser
        get() = allUsers.firstOrNull { u -> u.isLoggedIn } ?: User.DEFAULT
    override val theme: ITheme
        get() = currentUser.theme
    override val containerSize: DpSize
        get() = runCatching {
            toolkit.screenSize.let { screen -> DpSize(screen.width.dp, screen.height.dp) }
        }.getOrNull() ?: DpSize.Zero
    override val isLandscapeMode: Boolean
        get() = containerSize.let { it.width > it.height }

//    init {
//        Log.i("Got app args: $args")
//        runCatching {
//            windowsManager.init()
//        }
//        runCatching {
//            mounts.init()
//        }
//        runCatching {
//            dbus.updateEnvironment()
//        }
//    }

    override fun dispose() {
        Log.i("Cleaning up resources.")
        processManager.dispose()
        palette.dispose()
        theme.dispose()
//        runCatching {
//            mounts.dispose()
//        }
//        runCatching {
//            kcefHelper.dispose()
//        }
//        runCatching {
//            windowsManager.dispose()
//        }
    }

    fun runAsync(
        context: CoroutineContext = Dispatchers.Default,
        block: suspend () -> Unit
    ) {
        scope.launch(context) { block() }
    }

    suspend fun openMail(emailAddress: String) = runCatching {
        desktopUtils.mail(URI.create("mailto:$emailAddress"))
    }

    suspend fun openBrowser(url: String) = runCatching {
        desktopUtils.browse(URI.create(url))
    }

    suspend fun openDirectoryForFile(path: String) = runCatching {
        desktopUtils.browseFileDirectory(File(path))
    }

    suspend fun moveToTrash(file: File) = runCatching {
        desktopUtils.moveToTrash(file)
    }

    suspend fun moveToTrash(filePath: String) = runCatching {
        moveToTrash(File(filePath))
    }

    // todo, may be need another function
    suspend fun open(what: String) {
        Shell.executeAndRead("xdg-open", what)
    }

    suspend fun openFileInAssociated(file: File) = runCatching {
        desktopUtils.open(file)
    }

    suspend fun openFileInAssociated(filePath: String) = runCatching {
        openFileInAssociated(File(filePath))
    }

//    suspend fun beep() = runCatching {
//        toolkit.beep()
//    }

//    suspend fun sync() = runCatching {
//        toolkit.sync()
//    }

//    suspend fun createCustomCursor(cursor: Image, hotSpot: Point, name: String): Cursor? = runCatching {
//        toolkit.createCustomCursor(cursor, hotSpot, name)
//    }.getOrNull()

//    suspend fun createCustomCursor(cursor: Bitmap, hotSpot: Point, name: String): Cursor? = runCatching {
//        toolkit.createCustomCursor(cursor.image, hotSpot, name)
//    }.getOrNull()

//    suspend fun createCustomCursor(cursor: ImageBitmap, hotSpot: Point, name: String): Cursor? = runCatching {
//        toolkit.createCustomCursor(cursor.toAwtImage(), hotSpot, name)
//    }.getOrNull()

//    suspend fun createCustomCursor(cursor: ImageVector, hotSpot: Point, name: String) =
//        toolkit.createCustomCursor(cursor, hotSpot, name)

//    @Suppress("UNUSED_PARAMETER")
//    override suspend fun login(
//        uname: String,
//        upasswd: String
//    ): Boolean = true  // todo

//    override suspend fun logout() : Boolean = true // todo


    fun lock() = runAsync {
        Shell.executeAndRead("/usr/bin/loginctl", "lock-sessions")
    }

    override suspend fun logOut(): Unit = runAsync {
        application?.exitApplication()
    }

    override suspend fun suspend() {
        Shell.executeAndRead("/usr/bin/systemctl", "suspend")
    }

    override suspend fun shutdown() {
        Shell.executeAndRead("/usr/sbin/halt", "--poweroff")
    }

    override suspend fun login(uName: String, uPasswd: String): Boolean {
        return false // todo
    }

    override suspend fun logout(): Boolean {
        return false // todo
    }

    override fun createManager(cls: KClass<*>): IDelegate? = when (cls) {
        IOSManager::class -> OsManager(this)
        IPalette::class -> Palette(this)
        ITranslator::class -> Translator(this)
        IConnectivityManager::class -> ConnectivityManager(this)
        IAiManager::class -> AiManager(
            context = this,
            // todo user can configure
            pluginAI = AiPluginGemini(this@DesktopContext),
            pluginTTS = TTSPluginSwift(this@DesktopContext),
            pluginSTT = STTPluginEmpty(this@DesktopContext)
        )
        IAppsManager::class -> AppsManager(this)
        IThemeManager::class -> ThemeManager(this)
        IProcessManager::class -> ProcessManager(this)
        IKeyManager::class -> KeysManager(this)
        else -> cls.companionObject?.members?.first { it.name == "EMPTY" }?.call() as IDelegate
    }

    override suspend fun restart() {
        Shell.executeAndRead("/usr/sbin/halt", "--reboot")
    }

//    suspend fun Desktop.startApp(app: App) {
//        startApp(app.desktopFile)
//    }

//    suspend fun Desktop.startApp(
//        desktopFile: DesktopFile?
//    ) = withContext(Dispatchers.Default) {
//        open(desktopFile?.file)
//    }

    companion object {
        // todo application
        @Composable
        fun rememberDesktopContext(
            application: ApplicationScope?,
            imageLoader: ImageLoader = asyncImageLoader(),
            platformContext: PlatformContext = LocalPlatformContext.current,
            scope: CoroutineScope = rememberCoroutineScope(),
            isInDesign: Boolean = isDesign,
        ) = remember {
            Log.i("default initialized desktop provider created")
            DesktopContext(
                application = application,
                scope = scope,
                imageLoader = imageLoader,
                isInDesign = isInDesign,
                platformContext = platformContext
            )
        }

        suspend fun IDesktopContext.loadPicture(
            src: Any?
        ): Bitmap? = runCatching {
            ImageRequest.Builder(platformContext!!)
                .data(
                    when (src) {
                        is Path -> src.toFile()
                        else -> src.toString()
                    }
                )
                .build().let { req ->
                    imageLoader?.execute(req)?.image?.toBitmap()
                }
        }.getOrNull()
    }
}