"""
会议管理 API 路由
接入 MeetingScheduler（栅栏同步）+ MeetingRecorder（会议记录）
"""
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
from typing import List, Optional
from dataclasses import asdict
from datetime import datetime

from ..services.meeting_scheduler import get_meeting_scheduler
from ..services.meeting_recorder import get_meeting_recorder

router = APIRouter()


class MeetingCreate(BaseModel):
    title: str
    agenda: Optional[str] = ""
    meeting_type: Optional[str] = "design_review"
    attendees: List[str] = []
    steps: Optional[List[str]] = None


class MeetingWaitRequest(BaseModel):
    agent_id: str
    timeout: Optional[int] = 300


class DiscussionRequest(BaseModel):
    agent_id: str
    agent_name: Optional[str] = ""
    content: str
    step: Optional[str] = ""


class ProgressRequest(BaseModel):
    step: str


class FinishRequest(BaseModel):
    consensus: Optional[str] = ""


def _meeting_to_dict(meeting) -> dict:
    """将 MeetingInfo 转为前端友好的 dict"""
    return {
        "meeting_id": meeting.meeting_id,
        "title": meeting.title,
        "date": meeting.date,
        "status": meeting.status,
        "attendees": meeting.attendees,
        "steps": [
            {"step_id": s.step_id, "label": s.label, "status": s.status}
            for s in meeting.steps
        ],
        "discussions": [
            {
                "agent_id": d.agent_id,
                "agent_name": d.agent_name,
                "content": d.content,
                "timestamp": d.timestamp,
                "step": d.step
            }
            for d in meeting.discussions
        ],
        "progress_summary": meeting.progress_summary,
        "consensus": meeting.consensus,
        "created_at": meeting.created_at,
        "ended_at": meeting.ended_at
    }


@router.get("")
@router.get("/")
async def list_meetings(date: Optional[str] = None):
    """获取会议列表（默认今天）"""
    recorder = get_meeting_recorder()
    meetings = await recorder.list_meetings(date)
    return {"meetings": [_meeting_to_dict(m) for m in meetings]}


@router.get("/today")
async def list_today_meetings():
    """获取今日会议"""
    recorder = get_meeting_recorder()
    meetings = await recorder.list_meetings()
    return {"meetings": [_meeting_to_dict(m) for m in meetings]}


@router.post("/")
async def create_meeting(meeting: MeetingCreate):
    """创建新会议（同时创建调度记录和会议记录）"""
    recorder = get_meeting_recorder()
    scheduler = get_meeting_scheduler()

    meeting_id = f"meeting-{int(datetime.now().timestamp())}"

    # 在调度器中创建（用于栅栏同步）
    await scheduler.create_meeting(
        meeting_id=meeting_id,
        title=meeting.title,
        expected_attendees=meeting.attendees
    )

    # 在记录器中创建（用于记录内容）
    meeting_info = await recorder.create_meeting(
        meeting_id=meeting_id,
        title=meeting.title,
        attendees=meeting.attendees,
        steps=meeting.steps
    )

    return _meeting_to_dict(meeting_info)


@router.post("/create")
async def create_meeting_alt(meeting: MeetingCreate):
    """创建会议 API（前端使用的端点，与 POST / 相同）"""
    return await create_meeting(meeting)


@router.get("/{meeting_id}")
async def get_meeting(meeting_id: str, date: Optional[str] = None):
    """获取会议详情"""
    recorder = get_meeting_recorder()
    meeting_info = await recorder.get_meeting(meeting_id, date)
    if not meeting_info:
        raise HTTPException(status_code=404, detail="Meeting not found")
    return _meeting_to_dict(meeting_info)


@router.get("/{meeting_id}/queue")
async def get_meeting_queue(meeting_id: str):
    """获取会议等待队列"""
    scheduler = get_meeting_scheduler()
    queue = await scheduler.get_queue(meeting_id)
    if not queue:
        raise HTTPException(status_code=404, detail="Meeting queue not found")
    return {
        "meeting_id": queue.meeting_id,
        "title": queue.title,
        "status": queue.status,
        "expected_attendees": queue.expected_attendees,
        "arrived_attendees": queue.arrived_attendees,
        "missing_attendees": queue.missing_attendees,
        "progress": queue.progress,
        "is_ready": queue.is_ready
    }


@router.post("/{meeting_id}/wait")
async def wait_for_meeting(meeting_id: str, request: MeetingWaitRequest):
    """栅栏同步等待（阻塞直到所有参会者到齐或超时）"""
    scheduler = get_meeting_scheduler()
    status = await scheduler.wait_for_meeting(
        agent_id=request.agent_id,
        meeting_id=meeting_id,
        timeout=request.timeout or 300
    )
    return {"meeting_id": meeting_id, "status": status}


@router.post("/{meeting_id}/end")
async def end_meeting(meeting_id: str):
    """结束会议（调度层）"""
    scheduler = get_meeting_scheduler()
    success = await scheduler.end_meeting(meeting_id)
    if not success:
        raise HTTPException(status_code=404, detail="Meeting not found")
    return {"success": True, "meeting_id": meeting_id}


@router.post("/{meeting_id}/join")
async def join_meeting(meeting_id: str, data: dict):
    """Agent 加入会议"""
    agent_id = data.get("agent_id", "")
    scheduler = get_meeting_scheduler()
    await scheduler.add_attendee(meeting_id, agent_id)
    return {"success": True, "meeting_id": meeting_id, "agent_id": agent_id}


@router.post("/{meeting_id}/discuss")
async def add_discussion(meeting_id: str, data: DiscussionRequest):
    """添加讨论内容"""
    recorder = get_meeting_recorder()
    await recorder.add_discussion(
        meeting_id=meeting_id,
        agent_id=data.agent_id,
        agent_name=data.agent_name or data.agent_id,
        content=data.content,
        step=data.step or ""
    )
    return {"success": True, "meeting_id": meeting_id}


@router.post("/{meeting_id}/finish")
async def finish_meeting(meeting_id: str, data: FinishRequest):
    """完成会议（记录层 - 保存共识并标记完成）"""
    recorder = get_meeting_recorder()
    success = await recorder.end_meeting(
        meeting_id=meeting_id,
        consensus=data.consensus or ""
    )
    if not success:
        raise HTTPException(status_code=404, detail="Meeting not found")

    # 同时结束调度
    scheduler = get_meeting_scheduler()
    await scheduler.end_meeting(meeting_id)

    return {"success": True, "meeting_id": meeting_id}


@router.post("/{meeting_id}/progress")
async def update_progress(meeting_id: str, data: ProgressRequest):
    """更新会议进度"""
    recorder = get_meeting_recorder()
    await recorder.update_progress(
        meeting_id=meeting_id,
        step_label=data.step
    )
    return {"success": True, "meeting_id": meeting_id}


@router.post("/record/create")
async def create_meeting_record(data: dict):
    """创建会议记录（前端使用的端点）"""
    recorder = get_meeting_recorder()
    meeting_id = data.get("meeting_id", f"meeting-{int(datetime.now().timestamp())}")
    meeting_info = await recorder.create_meeting(
        meeting_id=meeting_id,
        title=data.get("title", "未命名会议"),
        attendees=data.get("attendees", []),
        steps=data.get("steps", [])
    )

    # 同时在调度器中注册
    scheduler = get_meeting_scheduler()
    await scheduler.create_meeting(
        meeting_id=meeting_id,
        title=data.get("title", "未命名会议"),
        expected_attendees=data.get("attendees", [])
    )

    return _meeting_to_dict(meeting_info)


@router.post("/record/{meeting_id}/discussion")
async def add_meeting_discussion(meeting_id: str, data: dict):
    """添加会议讨论（前端使用的端点）"""
    recorder = get_meeting_recorder()
    await recorder.add_discussion(
        meeting_id=meeting_id,
        agent_id=data.get("agent_id", ""),
        agent_name=data.get("agent_name", data.get("agent_id", "")),
        content=data.get("content", ""),
        step=data.get("step", "")
    )
    return {"success": True, "meeting_id": meeting_id, "discussion": data}