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path: root/src/main/kotlin/cc/woverflow/chatting/Chatting.kt
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package cc.woverflow.chatting

import cc.woverflow.chatting.chat.ChatSearchingManager
import cc.woverflow.chatting.chat.ChatShortcuts
import cc.woverflow.chatting.chat.ChatTabs
import cc.woverflow.chatting.command.ChattingCommand
import cc.woverflow.chatting.config.ChattingConfig
import cc.woverflow.chatting.hook.GuiNewChatHook
import cc.woverflow.chatting.mixin.GuiNewChatAccessor
import cc.woverflow.chatting.updater.Updater
import cc.woverflow.chatting.utils.ModCompatHooks
import cc.woverflow.chatting.utils.RenderHelper
import com.google.gson.JsonParser
import gg.essential.api.EssentialAPI
import gg.essential.api.gui.buildConfirmationModal
import gg.essential.api.utils.Multithreading
import gg.essential.api.utils.WebUtil
import gg.essential.elementa.ElementaVersion
import gg.essential.elementa.WindowScreen
import gg.essential.elementa.dsl.childOf
import gg.essential.universal.UDesktop
import gg.essential.universal.UResolution
import net.minecraft.client.Minecraft
import net.minecraft.client.gui.*
import net.minecraft.client.renderer.GlStateManager
import net.minecraft.client.renderer.OpenGlHelper
import net.minecraft.client.settings.KeyBinding
import net.minecraft.client.shader.Framebuffer
import net.minecraft.util.MathHelper
import net.minecraftforge.common.MinecraftForge.EVENT_BUS
import net.minecraftforge.fml.client.registry.ClientRegistry
import net.minecraftforge.fml.common.Loader
import net.minecraftforge.fml.common.Mod
import net.minecraftforge.fml.common.event.*
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent
import net.minecraftforge.fml.common.gameevent.TickEvent
import org.lwjgl.input.Keyboard
import skytils.skytilsmod.core.Config
import java.awt.image.BufferedImage
import java.io.File
import java.text.SimpleDateFormat
import java.util.*


@Mod(
    modid = Chatting.ID,
    name = Chatting.NAME,
    version = Chatting.VER,
    modLanguageAdapter = "gg.essential.api.utils.KotlinAdapter"
)
object Chatting {

    val keybind = KeyBinding("Screenshot Chat", Keyboard.KEY_NONE, "Chatting")
    const val NAME = "@NAME@"
    const val VER = "@VER@"
    const val ID = "@ID@"
    var doTheThing = false
    lateinit var jarFile: File
        private set
    var isPatcher = false
        private set
    var isBetterChat = false
        private set
    var isSkyclientStupid = false
        private set
    var isSkytils = false
        private set
    var isHychat = false
        private set

    private val fileFormatter: SimpleDateFormat = SimpleDateFormat("yyyy-MM-dd_HH.mm.ss'.png'")

    val modDir = File(File(Minecraft.getMinecraft().mcDataDir, "W-OVERFLOW"), NAME)

    @Mod.EventHandler
    fun onFMLPreInitialization(event: FMLPreInitializationEvent) {
        if (!modDir.exists()) modDir.mkdirs()
        jarFile = event.sourceFile
    }

    @Mod.EventHandler
    fun onInitialization(event: FMLInitializationEvent) {
        ChattingConfig.preload()
        ChattingCommand.register()
        ClientRegistry.registerKeyBinding(keybind)
        EVENT_BUS.register(this)
        ChatTabs.initialize()
        ChatShortcuts.initialize()
        Updater.update()
    }

    @Mod.EventHandler
    fun onPostInitialization(event: FMLPostInitializationEvent) {
        isPatcher = Loader.isModLoaded("patcher")
        isBetterChat = Loader.isModLoaded("betterchat")
        isSkytils = Loader.isModLoaded("skytils")
        val date = Date(jarFile.lastModified())
        isSkyclientStupid = date.before(Date(1641985860)) && date.after(Date(1641956460)) && Loader.isModLoaded("skyblockclientupdater") && !isSkytils // between 10am gmt+7 and 6pm gmt+7 skyclient updater falsely detected skytils as chatting
        isHychat = Loader.isModLoaded("hychat")
    }

    @Mod.EventHandler
    fun onForgeLoad(event: FMLLoadCompleteEvent) {
        if (ChattingConfig.firstLaunch) {
            ChattingConfig.firstLaunch = false
            ChattingConfig.markDirty()
            ChattingConfig.writeData()
            if (isSkyclientStupid) {
                EssentialAPI.getGuiUtil().openScreen(object : WindowScreen(version = ElementaVersion.V1) {
                    override fun initScreen(width: Int, height: Int) {
                        super.initScreen(width, height)
                        EssentialAPI.getEssentialComponentFactory().buildConfirmationModal {
                            this.text = "You may have had Skytils accidentally update to Chatting. Do you want to install the latest version of Skytils?"
                            this.onConfirm = {
                                restorePreviousScreen()
                                Multithreading.runAsync {
                                    val json = JsonParser().parse(WebUtil.fetchString(
                                        "https://api.github.com/repos/Skytils/SkytilsMod/releases"
                                    )).asJsonArray[0].asJsonObject
                                    if (Updater.download(
                                            json["assets"].asJsonArray[0].asJsonObject["browser_download_url"].asString,
                                            File(
                                                "mods/Skytils-${
                                                    json["tag_name"].asString.substringAfter("v")
                                                }.jar"
                                            )
                                        )
                                    ) {
                                        EssentialAPI.getNotifications()
                                            .push(
                                                NAME,
                                                "The ingame updater has successfully installed Skytils."
                                            )
                                    } else {
                                        EssentialAPI.getNotifications().push(
                                            NAME,
                                            "The ingame updater has NOT installed Skytils as something went wrong."
                                        )
                                    }
                                }
                            }
                            this.onDeny = {
                                restorePreviousScreen()
                            }
                        } childOf this.window
                    }
                })
            }
        }
        if (ChattingConfig.informForAlternatives) {
            if (isHychat) {
                EssentialAPI.getNotifications().push(NAME, "Hychat can be removed at it is replaced by Chatting.")
            }
            if (isSkytils) {
                if (Config.chatTabs) {
                    EssentialAPI.getNotifications().push(NAME, "Skytils' chat tabs can be disabled as it is replace by Chatting.\nClick here to automatically do this.", 6F) {
                        Config.chatTabs = false
                        ChattingConfig.chatTabs = true
                        ChattingConfig.hypixelOnlyChatTabs = true
                        Config.markDirty()
                        Config.writeData()
                    }
                }
                if (Config.copyChat) {
                    EssentialAPI.getNotifications().push(NAME, "Skytils' copy chat messages can be disabled as it is replace by Chatting.\nClick here to automatically do this.", 6F) {
                        Config.copyChat = false
                        Config.markDirty()
                        Config.writeData()
                    }
                }
            }
        }
    }

    @SubscribeEvent
    fun onTickEvent(event: TickEvent.ClientTickEvent) {
        if (event.phase == TickEvent.Phase.START && Minecraft.getMinecraft().theWorld != null && Minecraft.getMinecraft().thePlayer != null && (Minecraft.getMinecraft().currentScreen == null || Minecraft.getMinecraft().currentScreen is GuiChat)) {
            if (doTheThing) {
                screenshotChat()
                doTheThing = false
            }
        }
    }

    fun getChatHeight(opened: Boolean): Int {
        var height = if (opened) ChattingConfig.focusedHeight else ChattingConfig.unfocusedHeight
        height = (height * Minecraft.getMinecraft().gameSettings.chatScale).toInt()
        val chatY = ModCompatHooks.yOffset + ModCompatHooks.chatPosition
        if (height + chatY + 27 > (UResolution.scaledHeight / Minecraft.getMinecraft().gameSettings.chatScale).toInt() - 27 - chatY) {
            height = (UResolution.scaledHeight / Minecraft.getMinecraft().gameSettings.chatScale).toInt() - 27 - chatY
        }
        return height
    }

    fun screenshotLine(line: ChatLine): BufferedImage? {
        val hud = Minecraft.getMinecraft().ingameGUI
        val chat = hud.chatGUI
        val i = MathHelper.floor_float(chat.chatWidth / chat.chatScale)
        return screenshot(GuiUtilRenderComponents.splitText(line.chatComponent, i, Minecraft.getMinecraft().fontRendererObj, false, false).map { it.formattedText }.reversed(), chat.chatWidth)
    }

    private fun screenshotChat() {
        screenshotChat(0)
    }

    fun screenshotChat(scrollPos: Int) {
        val hud = Minecraft.getMinecraft().ingameGUI
        val chat = hud.chatGUI
        val chatLines = ArrayList<String>()
        ChatSearchingManager.filterMessages((chat as GuiNewChatHook).prevText, (chat as GuiNewChatAccessor).drawnChatLines)?.let { drawnLines ->
            val chatHeight = if (ChattingConfig.customChatHeight) getChatHeight(true) / 9 else GuiNewChat.calculateChatboxHeight(Minecraft.getMinecraft().gameSettings.chatHeightFocused / 9)
            for (i in scrollPos until drawnLines.size.coerceAtMost(scrollPos + chatHeight)) {
                chatLines.add(drawnLines[i].chatComponent.formattedText)
            }

            screenshot(chatLines, chat.chatWidth)?.let {
                RenderHelper.copyBufferedImageToClipboard(it)
            }
        }
    }

    private fun screenshot(messages: List<String>, width: Int): BufferedImage? {
        if (messages.isEmpty()) {
            EssentialAPI.getNotifications().push("Chatting", "Chat window is empty.")
            return null
        }
        if (!OpenGlHelper.isFramebufferEnabled()) {
            EssentialAPI.getNotifications().push("Chatting", "Screenshot failed, please disable “Fast Render” in OptiFine’s “Performance” tab.")
            return null
        }

        val fr: FontRenderer = ModCompatHooks.fontRenderer
        val fb: Framebuffer = RenderHelper.createBindFramebuffer(width * 3, (messages.size * 9) * 3)
        val file = File(Minecraft.getMinecraft().mcDataDir, "screenshots/chat/" + fileFormatter.format(Date()))

        GlStateManager.scale(3f, 3f, 1f)
        val scale = Minecraft.getMinecraft().gameSettings.chatScale
        GlStateManager.scale(scale, scale, 1f)
        for (i in messages.indices) {
            fr.drawStringWithShadow(messages[i], 0f, (messages.size - 1 - i) * 9f, 0xffffff)
        }

        val image = RenderHelper.screenshotFramebuffer(fb, file)
        Minecraft.getMinecraft().entityRenderer.setupOverlayRendering()
        Minecraft.getMinecraft().framebuffer.bindFramebuffer(true)
        EssentialAPI.getNotifications()
            .push("Chatting", "Chat screenshotted successfully." + (if (ChattingConfig.copyMode != 1) "\nClick to open." else "")) {
                if (!UDesktop.open(file)) {
                    EssentialAPI.getNotifications().push("Chatting", "Could not browse!")
                }
            }
        return image
    }
}