/*
 * Copyright (c) 2010-2020 Belledonne Communications SARL.
 *
 * This file is part of linphone-android
 * (see https://www.linphone.org).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.linphone

import android.annotation.SuppressLint
import android.app.Application
import android.content.Context
import coil.ImageLoader
import coil.ImageLoaderFactory
import coil.decode.GifDecoder
import coil.decode.ImageDecoderDecoder
import coil.decode.SvgDecoder
import coil.decode.VideoFrameDecoder
import coil.disk.DiskCache
import coil.memory.MemoryCache
import org.linphone.core.*
import org.linphone.core.tools.Log
import org.linphone.mediastream.Version

class LinphoneApplication : Application(), ImageLoaderFactory {
    companion object {
        @SuppressLint("StaticFieldLeak")
        lateinit var corePreferences: CorePreferences
        @SuppressLint("StaticFieldLeak")
        lateinit var coreContext: CoreContext

        private fun createConfig(context: Context) {
            if (::corePreferences.isInitialized) {
                return
            }

            Factory.instance().setLogCollectionPath(context.filesDir.absolutePath)
            Factory.instance().enableLogCollection(LogCollectionState.Enabled)

            // For VFS
            Factory.instance().setCacheDir(context.cacheDir.absolutePath)

            corePreferences = CorePreferences(context)
            corePreferences.copyAssetsFromPackage()

            if (corePreferences.vfsEnabled) {
                CoreContext.activateVFS()
            }

            val config = Factory.instance().createConfigWithFactory(corePreferences.configPath, corePreferences.factoryConfigPath)
            corePreferences.config = config

            val appName = context.getString(R.string.app_name)
            Factory.instance().setLoggerDomain(appName)
            Factory.instance().enableLogcatLogs(corePreferences.logcatLogsOutput)
            if (corePreferences.debugLogs) {
                Factory.instance().loggingService.setLogLevel(LogLevel.Message)
            }

            Log.i("[Application] Core config & preferences created")
        }

        fun ensureCoreExists(
            context: Context,
            pushReceived: Boolean = false,
            service: CoreService? = null,
            useAutoStartDescription: Boolean = false
        ): Boolean {
            if (::coreContext.isInitialized && !coreContext.stopped) {
                Log.d("[Application] Skipping Core creation (push received? $pushReceived)")
                return false
            }

            Log.i("[Application] Core context is being created ${if (pushReceived) "from push" else ""}")
            coreContext = CoreContext(context, corePreferences.config, service, useAutoStartDescription)
            coreContext.start()
            return true
        }

        fun contextExists(): Boolean {
            return ::coreContext.isInitialized
        }
    }

    override fun onCreate() {
        super.onCreate()
        val appName = getString(R.string.app_name)
        android.util.Log.i("[$appName]", "Application is being created")
        createConfig(applicationContext)
        Log.i("[Application] Created")
    }

    override fun newImageLoader(): ImageLoader {
        return ImageLoader.Builder(this)
            .components {
                add(VideoFrameDecoder.Factory())
                add(SvgDecoder.Factory())
                if (Version.sdkAboveOrEqual(Version.API28_PIE_90)) {
                    add(ImageDecoderDecoder.Factory())
                } else {
                    add(GifDecoder.Factory())
                }
            }
            .memoryCache {
                MemoryCache.Builder(this)
                    .maxSizePercent(0.25)
                    .build()
            }
            .diskCache {
                DiskCache.Builder()
                    .directory(cacheDir.resolve("image_cache"))
                    .maxSizePercent(0.02)
                    .build()
            }
            .build()
    }
}