"""Discord Bot 어댑터.

사용자 명령을 받아 FastAPI API를 호출하고 결과를 디스코드로 보고합니다.
"""

import asyncio
import logging

import discord
from discord.ext import commands

import config

logger = logging.getLogger("variet.discord")

# Bot 설정
intents = discord.Intents.default()
intents.message_content = True  # MESSAGE CONTENT INTENT 필요

bot = commands.Bot(
    command_prefix=config.DISCORD_COMMAND_PREFIX,
    intents=intents,
    help_command=commands.DefaultHelpCommand(no_category="명령어"),
)

# In-memory: Discord 채널 ↔ Task 매핑
_channel_tasks: dict[int, list[str]] = {}


@bot.event
async def on_ready():
    """봇 접속 완료."""
    logger.info(f"Discord Bot 접속 완료: {bot.user} (ID: {bot.user.id})")
    logger.info(f"서버 {len(bot.guilds)}개 연결됨")
    await bot.change_presence(
        activity=discord.Activity(
            type=discord.ActivityType.listening,
            name=f"{config.DISCORD_COMMAND_PREFIX}agent",
        )
    )


@bot.command(name="agent", help="AI Agent에게 작업 요청\n예: !agent README에 설치 방법 추가해줘")
async def agent_command(ctx: commands.Context, *, request: str):
    """작업 요청 → Pipeline 실행 → 결과 보고."""

    # 1. 접수 메시지
    embed = discord.Embed(
        title="📋 작업 접수",
        description=f"```{request[:200]}```",
        color=0x3498DB,
    )
    embed.set_footer(text="분석 중...")
    status_msg = await ctx.send(embed=embed)

    try:
        # 2. Pipeline 직접 실행 (같은 프로세스)
        from core.task_pipeline import TaskPipeline
        import uuid

        task_id = uuid.uuid4().hex[:8]

        # Planning
        embed.color = 0xF39C12
        embed.set_footer(text=f"🔍 작업 분해 중... (ID: {task_id})")
        await status_msg.edit(embed=embed)

        pipeline = TaskPipeline(
            project_path=str(config.PROJECT_ROOT),
        )
        pipeline.setup()

        # Plan 단계
        plan = await pipeline.plan(request)

        tasks = plan.get("tasks", [])
        plan_text = plan.get("summary", str(plan))[:500]

        plan_embed = discord.Embed(
            title="📝 작업 계획",
            description=f"```{plan_text}```",
            color=0x2ECC71,
        )
        if tasks:
            task_list = "\n".join(
                f"• {t.get('title', t.get('description', '?'))}"
                for t in tasks[:10]
            )
            plan_embed.add_field(
                name=f"태스크 ({len(tasks)}개)",
                value=task_list[:1000],
                inline=False,
            )
        plan_embed.set_footer(text=f"ID: {task_id}")
        await ctx.send(embed=plan_embed)

        # Code + Review 단계
        if tasks:
            for i, task in enumerate(tasks, 1):
                progress_embed = discord.Embed(
                    title=f"⚙️ 실행 중 ({i}/{len(tasks)})",
                    description=task.get("title", task.get("description", ""))[:200],
                    color=0xE67E22,
                )
                await ctx.send(embed=progress_embed)

                code_output = await pipeline.code(task)
                review = await pipeline.review(task, code_output)

                passed = review.get("passed", True)
                review_emoji = "✅" if passed else "⚠️"
                review_embed = discord.Embed(
                    title=f"{review_emoji} 리뷰 결과 ({i}/{len(tasks)})",
                    description=review.get("summary", str(review))[:500],
                    color=0x2ECC71 if passed else 0xE74C3C,
                )
                await ctx.send(embed=review_embed)

        # 완료
        done_embed = discord.Embed(
            title="✅ 작업 완료",
            description=f"총 {len(tasks)}개 태스크 처리 완료",
            color=0x2ECC71,
        )
        done_embed.set_footer(text=f"ID: {task_id}")
        await ctx.send(embed=done_embed)

        # 채널 태스크 기록
        _channel_tasks.setdefault(ctx.channel.id, []).append(task_id)

    except Exception as e:
        logger.error(f"작업 실행 오류: {e}", exc_info=True)
        error_embed = discord.Embed(
            title="❌ 오류 발생",
            description=f"```{str(e)[:500]}```",
            color=0xE74C3C,
        )
        await ctx.send(embed=error_embed)


@bot.command(name="ping", help="봇 응답 테스트")
async def ping_command(ctx: commands.Context):
    """연결 상태 확인."""
    latency = round(bot.latency * 1000)
    await ctx.send(f"🏓 Pong! ({latency}ms)")


@bot.command(name="info", help="시스템 정보")
async def info_command(ctx: commands.Context):
    """시스템 정보 표시."""
    embed = discord.Embed(
        title="🤖 Variet Agent",
        description="AI Agent Team — Gemini CLI 기반 자동화 개발 에이전트",
        color=0x9B59B6,
    )
    embed.add_field(name="프로젝트", value=str(config.PROJECT_ROOT), inline=False)
    embed.add_field(name="명령어 접두사", value=config.DISCORD_COMMAND_PREFIX, inline=True)
    embed.add_field(name="서버 수", value=str(len(bot.guilds)), inline=True)
    await ctx.send(embed=embed)


async def start_bot():
    """Discord Bot 시작 (async)."""
    token = config.DISCORD_BOT_TOKEN
    if not token:
        logger.error("DISCORD_BOT_TOKEN이 설정되지 않았습니다. .env 파일을 확인하세요.")
        return

    logger.info("Discord Bot 시작 중...")
    try:
        await bot.start(token)
    except discord.LoginFailure:
        logger.error("Discord 로그인 실패 — 토큰을 확인하세요.")
    except Exception as e:
        logger.error(f"Discord Bot 오류: {e}")


async def stop_bot():
    """Discord Bot 정지."""
    if not bot.is_closed():
        await bot.close()