spigot-chunkmaster/src/main/kotlin/net/trivernis/chunkmaster/commands/CmdGetCenter.kt

package net.trivernis.chunkmaster.commands

import net.trivernis.chunkmaster.Chunkmaster
import net.trivernis.chunkmaster.lib.Subcommand
import org.bukkit.command.Command
import org.bukkit.command.CommandSender
import org.bukkit.entity.Player

class CmdGetCenter(private val chunkmaster: Chunkmaster) : Subcommand {
    override val name = "getCenter"

    override fun onTabComplete(
        sender: CommandSender,
        command: Command,
        alias: String,
        args: List<String>
    ): MutableList<String> {
        if (args.size == 1) {
            return sender.server.worlds.filter { it.name.indexOf(args[0]) == 0 }
                .map { it.name }.toMutableList()
        }
        return emptyList<String>().toMutableList()
    }

    override fun execute(sender: CommandSender, args: List<String>): Boolean {
        val worldName: String = if (sender is Player) {
            if (args.isNotEmpty()) {
                args[0]
            } else {
                sender.world.name
            }
        } else {
            if (args.isEmpty()) {
                sender.sendMessage(chunkmaster.langManager.getLocalized("WORLD_NAME_REQUIRED"))
                return false
            } else {
                args[0]
            }
        }
        sendCenterInfo(sender, worldName)
        return true
    }

    /**
     * Sends the center information
     */
    private fun sendCenterInfo(sender: CommandSender, worldName: String) {
        chunkmaster.generationManager.worldProperties.getWorldCenter(worldName).thenAccept { worldCenter ->
            var center = worldCenter
            if (center == null) {
                val world = sender.server.worlds.find { it.name == worldName }
                if (world == null) {
                    sender.sendMessage(chunkmaster.langManager.getLocalized("WORLD_NOT_FOUND", worldName))
                    return@thenAccept
                }
                center = Pair(world.spawnLocation.chunk.x, world.spawnLocation.chunk.z)
            }
            sender.sendMessage(
                chunkmaster.langManager.getLocalized(
                    "CENTER_INFO",
                    worldName,
                    center.first,
                    center.second
                )
            )
        }
    }
}