minecraft-mod/Essentials/src/main/kotlin/com/beemer/essentials/nickname/NicknameCommand.kt

package com.beemer.essentials.nickname

import com.mojang.brigadier.arguments.StringArgumentType
import net.minecraft.ChatFormatting
import net.minecraft.commands.Commands
import net.minecraft.network.chat.Component
import net.minecraft.server.level.ServerPlayer
import net.neoforged.bus.api.SubscribeEvent
import net.neoforged.neoforge.event.RegisterCommandsEvent

/**
 * 닉네임 명령어
 * /닉네임 변경 <닉네임>
 * /닉네임 초기화
 */
object NicknameCommand {
    @SubscribeEvent
    fun onRegisterCommands(event: RegisterCommandsEvent) {
        // 한글 명령어
        event.dispatcher.register(
            Commands.literal("닉네임")
                .then(
                    Commands.literal("변경")
                        .then(
                            Commands.argument("닉네임", StringArgumentType.greedyString())
                                .executes { context ->
                                    val player = context.source.entity as? ServerPlayer
                                        ?: return@executes 0
                                    
                                    val nickname = StringArgumentType.getString(context, "닉네임").trim()
                                    executeSet(player, nickname)
                                }
                        )
                )
                .then(
                    Commands.literal("초기화")
                        .executes { context ->
                            val player = context.source.entity as? ServerPlayer
                                ?: return@executes 0
                            
                            executeReset(player)
                        }
                )
        )
        
        // 영어 명령어
        event.dispatcher.register(
            Commands.literal("nickname")
                .then(
                    Commands.literal("set")
                        .then(
                            Commands.argument("name", StringArgumentType.greedyString())
                                .executes { context ->
                                    val player = context.source.entity as? ServerPlayer
                                        ?: return@executes 0
                                    
                                    val nickname = StringArgumentType.getString(context, "name").trim()
                                    executeSet(player, nickname)
                                }
                        )
                )
                .then(
                    Commands.literal("reset")
                        .executes { context ->
                            val player = context.source.entity as? ServerPlayer
                                ?: return@executes 0
                            
                            executeReset(player)
                        }
                )
        )
    }
    
    private fun executeSet(player: ServerPlayer, nickname: String): Int {
        // 유효성 검사: 길이
        if (nickname.length < 2 || nickname.length > 16) {
            player.sendSystemMessage(
                Component.literal("닉네임은 2~16자 사이여야 합니다.")
                    .withStyle { it.withColor(ChatFormatting.RED) }
            )
            return 0
        }
        
        // 유효성 검사: 중복
        if (NicknameDataStore.isNicknameTaken(nickname, player.uuid)) {
            player.sendSystemMessage(
                Component.literal("이미 사용 중인 닉네임입니다.")
                    .withStyle { it.withColor(ChatFormatting.RED) }
            )
            return 0
        }
        
        // 닉네임 저장 및 적용
        NicknameDataStore.setNickname(player.uuid, nickname)
        NicknameManager.applyNickname(player, nickname)
        
        player.sendSystemMessage(
            Component.literal("닉네임이 ")
                .withStyle { it.withColor(ChatFormatting.GOLD) }
                .append(Component.literal(nickname).withStyle { it.withColor(ChatFormatting.AQUA) })
                .append(Component.literal("(으)로 변경되었습니다.").withStyle { it.withColor(ChatFormatting.GOLD) })
        )
        
        return 1
    }
    
    private fun executeReset(player: ServerPlayer): Int {
        if (!NicknameDataStore.hasNickname(player.uuid)) {
            player.sendSystemMessage(
                Component.literal("설정된 닉네임이 없습니다.")
                    .withStyle { it.withColor(ChatFormatting.RED) }
            )
            return 0
        }
        
        NicknameDataStore.removeNickname(player.uuid)
        NicknameManager.removeNickname(player)
        
        player.sendSystemMessage(
            Component.literal("닉네임이 초기화되었습니다.")
                .withStyle { it.withColor(ChatFormatting.GOLD) }
        )
        
        return 1
    }
}