tech.carcadex.kotlinbukkitkit.extensions.ExCommand.kt Maven / Gradle / Ivy

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kotlinbukkitkit-extensions

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/*
ORIGINAL PACKAGE: package br.com.devsrsouza.kotlinbukkitapi.extensions
ORIGINAL REPOSITORY: https://github.com/DevSrSouza/KotlinBukkitAPI
AUTHOR: https://github.com/DevSrSouza

Thanks DevSrSouza for KotlinBukkitAPI
 */

package tech.carcadex.kotlinbukkitkit.extensions

import org.bukkit.Bukkit
import org.bukkit.command.Command
import org.bukkit.command.SimpleCommandMap
import org.bukkit.plugin.Plugin
import java.lang.reflect.Field

private val serverCommands: SimpleCommandMap by lazy {
    val server = Bukkit.getServer()
    server::class.java.getDeclaredField("commandMap").apply {
        isAccessible = true
    }.get(server) as SimpleCommandMap
}

private val knownCommandsField: Field by lazy {
    SimpleCommandMap::class.java.getDeclaredField("knownCommands").apply {
        isAccessible = true
    }
}

public fun Command.register(plugin: Plugin) {
    serverCommands.register(plugin.name, this)
}

public fun Command.unregister() {
    try {
        val knownCommands = knownCommandsField.get(serverCommands) as MutableMap
        val toRemove = ArrayList()
        for ((key, value) in knownCommands) {
            if (value === this) {
                toRemove.add(key)
            }
        }
        for (str in toRemove) {
            knownCommands.remove(str)
        }
    } catch (e: Exception) {
        e.printStackTrace()
    }
}