"""
Agent 管理 API 路由
接入 AgentRegistry 服务，提供 Agent 注册、查询、状态管理
"""
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
from typing import Optional
from dataclasses import asdict

from ..services.agent_registry import get_agent_registry

router = APIRouter()


class AgentCreate(BaseModel):
    agent_id: str
    name: str
    role: str = "developer"
    model: str
    description: Optional[str] = None


class AgentStateUpdate(BaseModel):
    task: Optional[str] = ""
    progress: Optional[int] = 0
    working_files: Optional[list] = None
    status: Optional[str] = "idle"


@router.get("")
@router.get("/")
async def list_agents():
    """获取所有 Agent 列表"""
    registry = get_agent_registry()
    agents = await registry.list_agents()
    return {
        "agents": [asdict(agent) for agent in agents]
    }


@router.post("/register")
async def register_agent(agent: AgentCreate):
    """注册新 Agent"""
    registry = get_agent_registry()
    agent_info = await registry.register_agent(
        agent_id=agent.agent_id,
        name=agent.name,
        role=agent.role,
        model=agent.model,
        description=agent.description or ""
    )
    return asdict(agent_info)


@router.get("/{agent_id}")
async def get_agent(agent_id: str):
    """获取指定 Agent 信息"""
    registry = get_agent_registry()
    agent_info = await registry.get_agent(agent_id)
    if not agent_info:
        raise HTTPException(status_code=404, detail="Agent not found")
    return asdict(agent_info)


@router.delete("/{agent_id}")
async def delete_agent(agent_id: str):
    """删除 Agent"""
    registry = get_agent_registry()
    success = await registry.unregister_agent(agent_id)
    if not success:
        raise HTTPException(status_code=404, detail="Agent not found")
    return {"message": "Agent deleted"}


@router.get("/{agent_id}/state")
async def get_agent_state(agent_id: str):
    """获取 Agent 状态"""
    registry = get_agent_registry()
    state = await registry.get_state(agent_id)
    if not state:
        raise HTTPException(status_code=404, detail="Agent state not found")
    return asdict(state)


@router.post("/{agent_id}/state")
async def update_agent_state(agent_id: str, data: AgentStateUpdate):
    """更新 Agent 状态"""
    registry = get_agent_registry()
    agent_info = await registry.get_agent(agent_id)
    if not agent_info:
        raise HTTPException(status_code=404, detail="Agent not found")

    await registry.update_state(
        agent_id=agent_id,
        task=data.task or "",
        progress=data.progress or 0,
        working_files=data.working_files
    )
    return {"success": True}