package io.delilaheve

import io.delilaheve.util.ConfigOptions
import org.bukkit.Bukkit
import org.bukkit.configuration.file.YamlConfiguration
import org.bukkit.plugin.java.JavaPlugin
import xyz.alexcrea.cuanvil.api.event.CAConfigReadyEvent
import xyz.alexcrea.cuanvil.api.event.CAEnchantRegistryReadyEvent
import xyz.alexcrea.cuanvil.command.EditConfigExecutor
import xyz.alexcrea.cuanvil.command.ReloadExecutor
import xyz.alexcrea.cuanvil.config.ConfigHolder
import xyz.alexcrea.cuanvil.dependency.DependencyManager
import xyz.alexcrea.cuanvil.dependency.util.PlatformUtil
import xyz.alexcrea.cuanvil.enchant.CAEnchantmentRegistry
import xyz.alexcrea.cuanvil.gui.config.MainConfigGui
import xyz.alexcrea.cuanvil.gui.util.GuiSharedConstant
import xyz.alexcrea.cuanvil.listener.AnvilCloseListener
import xyz.alexcrea.cuanvil.listener.AnvilResultListener
import xyz.alexcrea.cuanvil.listener.ChatEventListener
import xyz.alexcrea.cuanvil.listener.PrepareAnvilListener
import xyz.alexcrea.cuanvil.update.PluginSetDefault
import xyz.alexcrea.cuanvil.update.UpdateHandler
import xyz.alexcrea.cuanvil.util.Metrics
import java.io.File
import java.io.FileReader
import java.util.logging.Level

/**
 * Bukkit/Spigot/Paper plugin to alter anvil feature
 */
open class CustomAnvil : JavaPlugin() {

    companion object {
        // bstats plugin id
        private const val bstatsPluginId = 20923

        // Permission string required to use the plugin's features
        const val affectedByPluginPermission = "ca.affected"

        // Permission string required to bypass enchantment conflicts test
        const val bypassFusePermission = "ca.bypass.fuse"

        // Permission string required to bypass enchantment conflicts test
        const val bypassLevelPermission = "ca.bypass.level"

        // Permission string required to reload the config
        const val commandReloadPermission = "ca.command.reload"

        // Permission string required to edit the plugin's config
        const val editConfigPermission = "ca.config.edit"

        // Command Name to reload the config
        const val commandReloadName = "anvilconfigreload"

        // Config command name
        const val commandConfigName = "customanvilconfig"

        // Current plugin instance
        lateinit var instance: CustomAnvil

        // Chat message listener
        lateinit var chatListener: ChatEventListener

        /**
         * Logging handler
         */
        @JvmStatic fun log(message: String) {
            if (ConfigOptions.debugLog) {
                instance.logger.info(message)
            }
        }

        /**
         * Vebose Logging handler
         */
        fun verboseLog(message: String) {
            if (ConfigOptions.verboseDebugLog) {
                instance.logger.info(message)
            }
        }

    }

    /**
     * Setup plugin for use
     */
    override fun onEnable() {
        instance = this

        // Disable old plugin name if exist
        val potentialPlugin = Bukkit.getPluginManager().getPlugin("UnsafeEnchantsPlus")
        if (potentialPlugin != null) {
            Bukkit.getPluginManager().disablePlugin(potentialPlugin)
            logger.warning("An old version of this plugin was detected")
            logger.warning("Please note CustomAnvil is a more recent version of UnsafeEnchantsPlus")
        }

        if(!PlatformUtil.isPaper) {
            logger.warning("It seems you are using spigot")
            logger.warning("Please take notice that spigot is less supported than paper and derivatives")
        }

        // Add commands
        prepareCommand()

        // Load chat listener
        chatListener = ChatEventListener()
        server.pluginManager.registerEvents(chatListener, this)

        // Load default configuration
        if (!ConfigHolder.loadDefaultConfig()) {
            logger.log(Level.SEVERE,"could not load default config.")
            return
        }

        // Load dependency
        DependencyManager.loadDependency()

        // Register anvil events
        server.pluginManager.registerEvents(PrepareAnvilListener(), this)
        server.pluginManager.registerEvents(AnvilResultListener(), this)
        server.pluginManager.registerEvents(AnvilCloseListener(DependencyManager.packetManager), this)

        // Load metrics
        Metrics(this, bstatsPluginId)

        // Load other thing later.
        // It is so other dependent plugins can implement there event listener before we fire them.
        DependencyManager.scheduler.scheduleGlobally(this, {loadEnchantmentSystem()})
    }

    private fun loadEnchantmentSystem(){
        // Register enchantments
        CAEnchantmentRegistry.getInstance().registerBukkit()
        DependencyManager.registerEnchantments()

        val enchantReadyEvent = CAEnchantRegistryReadyEvent()
        server.pluginManager.callEvent(enchantReadyEvent)

        // Load config
        if (!ConfigHolder.loadNonDefaultConfig()) {
            logger.log(Level.SEVERE,"could not load non default config.")
            return
        }

        // Handle minecraft and plugin updates
        UpdateHandler.handleUpdates()

        // Register enchantment of compatible plugin and load configuration change.
        DependencyManager.handleCompatibilityConfig()

        // Call config event
        val configReadyEvent = CAConfigReadyEvent()
        server.pluginManager.callEvent(configReadyEvent)

        // Load gui constants //TODO maybe something better later
        MainConfigGui.getInstance().init(DependencyManager.packetManager)
        GuiSharedConstant.loadConstants()

        // Finally, re add default we may be missing
        PluginSetDefault.reAddMissingDefault()

    }

    fun reloadResource(
        resourceName: String,
        hardFailSafe: Boolean = true
    ): YamlConfiguration? {
        // Save default resource
        val file = File(dataFolder, resourceName)
        if (!file.exists()) {
            saveResource(resourceName, false)
        }

        return reloadResource(file, hardFailSafe)
    }

    // Unlike above function. this function will not clone default from jar.
    fun reloadResource(
        resourceFile: File,
        hardFailSafe: Boolean = true
    ): YamlConfiguration? {
        // Test if file exist
        if (!resourceFile.exists()) {
            return null
        }

        // Load resource
        val yamlConfig = YamlConfiguration()
        try {
            val configReader = FileReader(resourceFile)
            yamlConfig.load(configReader)
        } catch (test: Exception) {
            if (hardFailSafe) {
                // This is important and may impact gameplay if it does not load.
                // Failsafe is to stop the plugin
                logger.severe("Resource ${resourceFile.path} Could not be load or reload.")
                logger.severe("Disabling plugin.")
                Bukkit.getPluginManager().disablePlugin(this)
            } else {
                logger.warning("Resource ${resourceFile.path} Could not be load or reload.")
            }
            return null
        }
        return yamlConfig
    }

    fun prepareCommand() {
        var command = getCommand(commandReloadName)
        command?.setExecutor(ReloadExecutor())

        command = getCommand(commandConfigName)
        command?.setExecutor(EditConfigExecutor())
    }

}