minecraft-mod/Essentials/src/main/kotlin/com/beemer/essentials/command/HelpCommand.kt

package com.beemer.essentials.command

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

object HelpCommand {
    @SubscribeEvent
    fun onRegisterCommands(event: RegisterCommandsEvent) {
        listOf("도움말", "help", "essentials").forEach { command ->
            event.dispatcher.register(
                    Commands.literal(command).executes { context ->
                        val player = context.source.entity as? ServerPlayer ?: return@executes 0
                        showHelp(player)
                        1
                    }
            )
        }
    }

    private fun showHelp(player: ServerPlayer) {
        val header =
                Component.literal("══════════ ")
                        .withStyle { it.withColor(ChatFormatting.DARK_GRAY) }
                        .append(
                                Component.literal("도움말").withStyle {
                                    it.withColor(ChatFormatting.GOLD).withBold(true)
                                }
                        )
                        .append(
                                Component.literal(" ══════════").withStyle {
                                    it.withColor(ChatFormatting.DARK_GRAY)
                                }
                        )

        player.sendSystemMessage(header)
        player.sendSystemMessage(Component.empty())

        // 좌표 관리
        sendCategory(player, "좌표 관리", ChatFormatting.YELLOW)
        sendCommand(player, "/좌표", "저장된 좌표 목록 (GUI)")
        sendCommand(player, "/좌표추가 <이름>", "현재 위치 저장")
        sendCommand(player, "/좌표이동 <이름>", "해당 좌표로 이동")
        sendCommand(player, "/좌표제거 <이름>", "저장된 좌표 삭제")
        player.sendSystemMessage(Component.empty())

        // 스폰
        sendCategory(player, "스폰", ChatFormatting.GREEN)
        sendCommand(player, "/스폰", "스폰으로 이동")
        sendCommand(player, "/스폰설정", "현재 위치를 스폰으로 설정")
        sendCommand(player, "/스폰삭제", "커스텀 스폰 삭제")
        player.sendSystemMessage(Component.empty())

        // 텔레포트
        sendCategory(player, "텔레포트", ChatFormatting.AQUA)
        sendCommand(player, "/tpa", "플레이어 선택 (GUI)")
        sendCommand(player, "/back", "이전 위치로 이동")
        player.sendSystemMessage(Component.empty())

        // 닉네임
        sendCategory(player, "닉네임", ChatFormatting.LIGHT_PURPLE)
        sendCommand(player, "/닉네임 변경 <닉네임>", "닉네임 설정")
        sendCommand(player, "/닉네임 초기화", "닉네임 초기화")
        player.sendSystemMessage(Component.empty())

        // 머리
        sendCategory(player, "머리", ChatFormatting.GOLD)
        sendCommand(player, "/머리", "내 머리 아이템 받기")
        sendCommand(player, "/머리 <닉네임>", "해당 플레이어 머리 받기")
        player.sendSystemMessage(Component.empty())

        // 제작대
        sendCategory(player, "제작대", ChatFormatting.WHITE)
        sendCommand(player, "/제작대", "제작대 열기")
        player.sendSystemMessage(Component.empty())

        // 메뉴
        sendCategory(player, "메뉴", ChatFormatting.LIGHT_PURPLE)
        sendCommand(player, "/메뉴", "메뉴 GUI 열기")
        sendCommand(player, "Shift + F", "메뉴 GUI 열기 (단축키)")

        val footer =
                Component.literal("═══════════════════════════════").withStyle {
                    it.withColor(ChatFormatting.DARK_GRAY)
                }
        player.sendSystemMessage(footer)
    }

    private fun sendCategory(player: ServerPlayer, name: String, color: ChatFormatting) {
        val message =
                Component.literal("▸ ")
                        .withStyle { it.withColor(color) }
                        .append(
                                Component.literal(name).withStyle {
                                    it.withColor(color).withBold(true)
                                }
                        )
        player.sendSystemMessage(message)
    }

    private fun sendCommand(player: ServerPlayer, cmd: String, desc: String) {
        val message =
                Component.literal("  ")
                        .append(
                                Component.literal(cmd).withStyle {
                                    it.withColor(ChatFormatting.WHITE)
                                }
                        )
                        .append(
                                Component.literal(" - ").withStyle {
                                    it.withColor(ChatFormatting.DARK_GRAY)
                                }
                        )
                        .append(
                                Component.literal(desc).withStyle {
                                    it.withColor(ChatFormatting.GRAY)
                                }
                        )
        player.sendSystemMessage(message)
    }
}