from fastapi import Depends, FastAPI
from fastapi.middleware.cors import CORSMiddleware
from slowapi import Limiter, _rate_limit_exceeded_handler
from slowapi.errors import RateLimitExceeded
from slowapi.util import get_remote_address

from app.config import settings
from app.middleware import verify_api_key
from app.routers import avm, moderation, nlp

limiter = Limiter(key_func=get_remote_address, default_limits=[settings.rate_limit])

app = FastAPI(
    title=settings.app_name,
    version="0.1.0",
    docs_url="/docs",
    redoc_url="/redoc",
    dependencies=[Depends(verify_api_key)],
)
app.state.limiter = limiter
app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)

if not settings.cors_origin_list:
    raise RuntimeError("AI_CORS_ORIGINS must be set (comma-separated list of allowed origins)")

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

app.include_router(avm.router)
app.include_router(moderation.router)
app.include_router(nlp.router)


@app.get("/health")
def health() -> dict:
    return {"status": "ok", "service": settings.app_name}