import os
from contextlib import asynccontextmanager
from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.responses import JSONResponse

from routers import health, embeddings, classification, daily_report, rag
from db.vector_store import vector_store
from db.metadata_store import metadata_store
from services.ollama_client import ollama_client
from middlewares.auth import verify_token

PUBLIC_PATHS = {"/", "/api/ai/health", "/api/ai/models"}


class AuthMiddleware(BaseHTTPMiddleware):
    async def dispatch(self, request: Request, call_next):
        if request.method == "OPTIONS" or request.url.path in PUBLIC_PATHS:
            return await call_next(request)
        try:
            request.state.user = await verify_token(request)
        except Exception as e:
            return JSONResponse(status_code=401, content={"detail": str(e.detail) if hasattr(e, "detail") else "인증 실패"})
        return await call_next(request)


@asynccontextmanager
async def lifespan(app: FastAPI):
    vector_store.initialize()
    metadata_store.initialize()
    yield
    await ollama_client.close()


app = FastAPI(
    title="TK AI Service",
    description="AI 서비스 (유사 검색, 분류, 보고서)",
    version="1.0.0",
    lifespan=lifespan,
)

ALLOWED_ORIGINS = [
    "https://tkfb.technicalkorea.net",
    "https://tkreport.technicalkorea.net",
    "https://tkqc.technicalkorea.net",
    "https://tkuser.technicalkorea.net",
]
if os.getenv("ENV", "production") == "development":
    ALLOWED_ORIGINS += ["http://localhost:30080", "http://localhost:30180", "http://localhost:30280"]

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

app.add_middleware(AuthMiddleware)

app.include_router(health.router, prefix="/api/ai")
app.include_router(embeddings.router, prefix="/api/ai")
app.include_router(classification.router, prefix="/api/ai")
app.include_router(daily_report.router, prefix="/api/ai")
app.include_router(rag.router, prefix="/api/ai")


@app.get("/")
async def root():
    return {"message": "TK AI Service", "version": "1.0.0"}