"""FastAPI 入口。挂载路由,放行前端跨域,启动时建表。

启动:  uv run --with-requirements requirements.txt uvicorn app:app --reload --port 8000

路由分组(对齐 dograh 的 routes/ 结构):
  /health              健康检查
  /api/assistants      助手 CRUD
  /api/credentials     模型凭证 CRUD(key 打码)
  /ws/voice            WebRTC 输出(浏览器)
  /ws/stream           WS 输出(裸音频流)
"""

from contextlib import asynccontextmanager

import config
import uvicorn
from db.session import init_db
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from routes import (
    assistants,
    credentials,
    health,
    knowledge_bases,
    voice_webrtc,
    voice_ws,
)


@asynccontextmanager
async def lifespan(_app: FastAPI):
    await init_db()  # MVP:启动建表;表稳定后切 alembic
    yield


app = FastAPI(title="AI Video Assistant 平台 - 后端", lifespan=lifespan)

app.add_middleware(
    CORSMiddleware,
    allow_origins=config.CORS_ORIGINS,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(health.router)
app.include_router(assistants.router)
app.include_router(credentials.router)
app.include_router(knowledge_bases.router)
app.include_router(voice_webrtc.router)
app.include_router(voice_ws.router)


if __name__ == "__main__":
    uvicorn.run("app:app", host=config.HOST, port=config.PORT, reload=True)