/*
 * Copyright 2019-2023 Mamoe Technologies and contributors.
 *
 * 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
 * Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
 *
 * https://github.com/mamoe/mirai/blob/dev/LICENSE
 */

@file:Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE", "CANNOT_OVERRIDE_INVISIBLE_MEMBER")

package net.mamoe.mirai.mock.internal.contact

import kotlinx.serialization.Serializable
import net.mamoe.mirai.Bot
import net.mamoe.mirai.contact.Contact
import net.mamoe.mirai.contact.Group
import net.mamoe.mirai.contact.Member
import net.mamoe.mirai.contact.PermissionDeniedException
import net.mamoe.mirai.internal.contact.uin
import net.mamoe.mirai.internal.message.data.OnlineAudioImpl
import net.mamoe.mirai.internal.message.image.DeferredOriginUrlAware
import net.mamoe.mirai.message.data.*
import net.mamoe.mirai.mock.MockBot
import net.mamoe.mirai.mock.contact.MockGroup
import net.mamoe.mirai.mock.utils.mock
import net.mamoe.mirai.mock.utils.plusHttpSubpath
import net.mamoe.mirai.utils.ExternalResource
import net.mamoe.mirai.utils.ExternalResource.Companion.toExternalResource
import net.mamoe.mirai.utils.Services
import net.mamoe.mirai.utils.cast
import net.mamoe.mirai.utils.toUHexString


internal fun Member.requireBotPermissionHigherThanThis(msg: String) {
    if (this.permission < this.group.botPermission) return

    throw PermissionDeniedException("bot current permission ${group.botPermission} can't modify $id($permission), $msg")
}

internal fun MessageSource.withMessage(msg: Message): MessageChain = buildMessageChain {
    add(this@withMessage)
    if (msg is MessageChain) {
        msg.forEach { sub ->
            if (sub !is MessageSource) {
                add(sub)
            }
        }
    } else if (msg !is MessageSource) {
        add(msg)
    }
}

@Suppress("UNUSED_PARAMETER")
internal suspend fun ExternalResource.mockUploadAudio(bot: MockBot): OfflineAudio {
    val md5 = md5 // calculate before using resource
    return inResource {
        OfflineAudio(
            filename = md5.toUHexString() + ".amr",
            fileMd5 = md5,
            fileSize = size,
            codec = AudioCodec.SILK,
            extraData = null,
        )
    }
}

internal suspend fun ExternalResource.mockUploadVoice(bot: MockBot) = kotlin.run {
    val md5 = this.md5
    val size = this.size
    @Suppress("DEPRECATION_ERROR")
    net.mamoe.mirai.message.data.Voice(
        fileName = md5.toUHexString() + ".amr",
        md5 = md5,
        fileSize = size,
        _url = bot.tmpResourceServer.uploadResourceAndGetUrl(this)
    )
}

internal const val AQQ_RECALL_FAILED_MESSAGE: String = "No message meets the requirements"

internal val Group.mockUin: Long
    get() = when (this) {
        is MockGroup -> this.uin
        else -> this.uin
    }


internal suspend fun ExternalResource.mockImplUploadAudioAsOnline(bot: MockBot): OnlineAudio {
    val md5 = this.md5
    val size = this.size
    return OnlineAudioImpl(
        filename = md5.toUHexString() + ".amr",
        fileMd5 = md5,
        fileSize = size,
        codec = AudioCodec.SILK,
        url = bot.tmpResourceServer.uploadResourceAndGetUrl(this),
        length = size,
        originalPtt = null,
    )
}

@Suppress("SERIALIZER_TYPE_INCOMPATIBLE")
@Serializable(MockImage.Serializer::class)
internal class MockImage(
    override val imageId: String,
    private val urlPath: String,
    override val width: Int = 0,
    override val height: Int = 0,
    override val size: Long = 0,
    override val imageType: ImageType = ImageType.UNKNOWN,
) : DeferredOriginUrlAware, Image {

    companion object {
        // create a mockImage with random content
        internal suspend fun random(bot: MockBot): MockImage {
            val text = bot.avatarGenerator.generateRandomAvatar()
            return bot.uploadMockImage(text.toExternalResource().toAutoCloseable()).cast()
        }

        internal suspend fun randomForPerson(bot: MockBot, id: Long): MockImage {
            val text = bot.avatarGenerator.generateAvatarForPerson(id)
            return bot.uploadMockImage(text.toExternalResource().toAutoCloseable()).cast()
        }

        internal suspend fun randomForGroup(bot: MockBot, id: Long): MockImage {
            val text = bot.avatarGenerator.generateAvatarForGroup(id)
            return bot.uploadMockImage(text.toExternalResource().toAutoCloseable()).cast()
        }
    }

    object Serializer : Image.FallbackSerializer("MockImage")

    private val _stringValue: String? by lazy(LazyThreadSafetyMode.NONE) { "[mirai:image:$imageId]" }

    override fun getUrl(bot: Bot): String {
        if (urlPath.startsWith("http"))
            return urlPath
        return bot.mock().tmpResourceServer.storageRoot.toString().plusHttpSubpath(urlPath)
    }

    override fun toString(): String = _stringValue!!
    override fun contentToString(): String = if (isEmoji) {
        "[动画表情]"
    } else {
        "[图片]"
    }

    override fun appendMiraiCodeTo(builder: StringBuilder) {
        builder.append("[mirai:image:").append(imageId).append("]")
    }

    override fun hashCode(): Int = imageId.hashCode()
    override fun equals(other: Any?): Boolean {
        if (other === this) return true
        if (other !is Image) return false
        return this.imageId == other.imageId
    }
}

internal object MockInternalImageProtocolImpl : InternalImageProtocol {

    override fun createImage(
        imageId: String,
        size: Long,
        type: ImageType,
        width: Int,
        height: Int,
        isEmoji: Boolean
    ): Image = MockImage(imageId, "images/" + imageId.substring(1..36), width, height, size, type)

    override suspend fun isUploaded(
        bot: Bot,
        md5: ByteArray,
        size: Long,
        context: Contact?,
        type: ImageType,
        width: Int,
        height: Int
    ): Boolean = bot.cast<MockBot>().tmpResourceServer.isImageUploaded(md5, size)

}

internal fun registerMockServices() {
    Services.registerAsOverride(
        Services.qualifiedNameOrFail(InternalImageProtocol::class),
        "net.mamoe.mirai.mock.internal.contact.MockInternalImageProtocolImpl"
    ) {
        MockInternalImageProtocolImpl
    }
}