/*
 * Skytils - Hypixel Skyblock Quality of Life Mod
 * Copyright (C) 2021 Skytils
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package skytils.skytilsmod.tweaker

import SkytilsInstallerFrame
import net.minecraftforge.common.ForgeVersion
import net.minecraftforge.fml.relauncher.IFMLLoadingPlugin
import org.apache.hc.client5.http.classic.methods.HttpGet
import org.apache.hc.core5.http.io.entity.EntityUtils
import org.spongepowered.asm.launch.MixinBootstrap
import org.spongepowered.asm.mixin.MixinEnvironment
import skytils.skytilsmod.utils.APIUtil
import skytils.skytilsmod.utils.Utils
import skytils.skytilsmod.utils.startsWithAny
import java.awt.Desktop
import java.awt.Image
import java.awt.Toolkit
import java.awt.event.MouseAdapter
import java.awt.event.MouseEvent
import java.io.File
import java.net.URI
import java.net.URL
import javax.swing.*

/**
 * Fake loading plugin, called from the java loading plugin
 * @see skytils.skytilsmod.tweaker.SkytilsLoadingPlugin
 */
class SkytilsLoadingPluginKt : IFMLLoadingPlugin {

    init {
        if (System.getProperty("skytils.skipStartChecks") == null) {
            // Must use reflection otherwise the "constant" value will be inlined by compiler
            if (!runCatching {
                    MixinBootstrap::class.java.getDeclaredField("VERSION").also { it.isAccessible = true }
                        .get(null) as String
                }.getOrDefault("unknown").startsWithAny("0.7", "0.8")) {
                try {
                    Class.forName("com.mumfrey.liteloader.launch.LiteLoaderTweaker")
                    showMessage(SkytilsLoadingPlugin.liteloaderUserMessage)
                    SkytilsLoadingPlugin.exit()
                } catch (ignored: ClassNotFoundException) {
                    showMessage(
                        SkytilsLoadingPlugin.badMixinVersionMessage + "<br>The culprit seems to be " + File(
                            MixinEnvironment::class.java.protectionDomain.codeSource.location.toURI()
                        ).name + "</p></html>"
                    )
                    SkytilsLoadingPlugin.exit()
                }
            }

            // Must use reflection otherwise the "constant" value will be inlined by compiler
            val forgeVersion = runCatching {
                ForgeVersion::class.java.getDeclaredField("buildVersion").also { it.isAccessible = true }
                    .get(null) as Int
            }.onFailure { it.printStackTrace() }.getOrDefault(2318)
            // Asbyth's forge fork uses version 0
            if (!(forgeVersion >= 2318 || forgeVersion == 0)) {
                val forgeUrl =
                    URL("https://maven.minecraftforge.net/net/minecraftforge/forge/1.8.9-11.15.1.2318-1.8.9/forge-1.8.9-11.15.1.2318-1.8.9-installer.jar").toURI()
                val forgeButton = createButton("Get Forge") {
                    if (SkytilsInstallerFrame.getOperatingSystem() == SkytilsInstallerFrame.OperatingSystem.WINDOWS) {
                        runCatching {
                            val tempDir = System.getenv("TEMP")
                            val forgeFile = File(tempDir, "forge-1.8.9-11.15.1.2318-1.8.9-installer.jar")

                            val runtime = Utils.getJavaRuntime()

                            val client = APIUtil.builder.build()
                            client.execute(HttpGet(forgeUrl)) {
                                if (it.code == 200) {
                                    it.entity.writeTo(forgeFile.outputStream())
                                    EntityUtils.consume(it.entity)
                                    client.close()
                                    Runtime.getRuntime()
                                        .exec("\"$runtime\" -jar \"${forgeFile.canonicalPath}\"")
                                    exit()
                                } else {
                                    Desktop.getDesktop().browse(forgeUrl)
                                }
                            }
                        }.onFailure {
                            it.printStackTrace()
                            Desktop.getDesktop().browse(forgeUrl)
                        }
                    } else Desktop.getDesktop().browse(forgeUrl)
                }
                showMessage(
                    """
                #Skytils has detected that you are using an old version of Forge (build ${forgeVersion}).
                #In order to resolve this issue and launch the game,
                #please install Minecraft Forge build 2318 for Minecraft 1.8.9.
                #If you have already done this and are still getting this error,
                #ask for support in the Discord.
                """.trimMargin("#"),
                    forgeButton
                )
            }
            if (this::class.java.classLoader.getResource("patcher.mixins.json") == null && Package.getPackages()
                    .any { it.name.startsWith("club.sk1er.patcher") }
            ) {
                val sk1erClubButton = createButton("Go to Sk1er.Club") {
                    Desktop.getDesktop().browse(URL("https://sk1er.club/mods/patcher").toURI())
                }
                showMessage(
                    """
                #Skytils has detected that you are using an old version of Patcher.
                #You must update Patcher in order for your game to launch.
                #You can do so at https://sk1er.club/mods/patcher
                #If you have already done this and are still getting this error,
                #ask for support in the Discord.
                """.trimMargin("#"), sk1erClubButton
                )
                SkytilsLoadingPlugin.exit()
            }
        }
    }

    override fun getASMTransformerClass(): Array<String> {
        return arrayOf("skytils.skytilsmod.asm.SkytilsTransformer")
    }

    override fun getModContainerClass(): String? {
        return null
    }

    override fun getSetupClass(): String? {
        return null
    }

    override fun injectData(data: MutableMap<String, Any>?) {
    }

    override fun getAccessTransformerClass(): String? {
        return null
    }

    private fun showMessage(errorMessage: String, vararg options: Any) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName())
        } catch (e: Exception) {
            e.printStackTrace()
        }

        // This makes the JOptionPane show on taskbar and stay on top
        val frame = JFrame()
        frame.isUndecorated = true
        frame.isAlwaysOnTop = true
        frame.setLocationRelativeTo(null)
        frame.isVisible = true
        var icon: Icon? = null
        try {
            val url = SkytilsLoadingPlugin::class.java.getResource("/assets/skytils/sychicpet.gif")
            if (url != null) {
                icon = ImageIcon(
                    Toolkit.getDefaultToolkit().createImage(url).getScaledInstance(50, 50, Image.SCALE_DEFAULT)
                )
            }
        } catch (e: Exception) {
            e.printStackTrace()
        }
        val discordLink = createButton("Join the Discord") {
            Desktop.getDesktop().browse(URI("https://discord.gg/skytils"))
        }
        val close = createButton("Close") {
            exit()
        }
        val totalOptions = arrayOf(discordLink, close, *options)
        JOptionPane.showOptionDialog(
            frame,
            errorMessage,
            "Skytils Error",
            JOptionPane.DEFAULT_OPTION,
            JOptionPane.ERROR_MESSAGE,
            icon,
            totalOptions,
            totalOptions[0]
        )
        exit()
    }

    private fun exit() {
        SkytilsLoadingPlugin.exit()
    }
}

fun createButton(text: String, onClick: () -> Unit): JButton {
    return JButton(text).also {
        it.addMouseListener(object : MouseAdapter() {
            override fun mouseClicked(e: MouseEvent) {
                onClick()
            }
        })
    }
}