import logging
import os
from logging.handlers import RotatingFileHandler
from pathlib import Path

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from app.routers import ingest, query
from app.core.config import get_settings

# Configure logging before app initialization
LOG_DIR = Path(__file__).parent / "log"
LOG_DIR.mkdir(exist_ok=True)

LOG_FILE = LOG_DIR / "backend.log"
LOG_FORMAT = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"

# Root logger configuration
logging.basicConfig(
    level=logging.INFO,
    format=LOG_FORMAT,
    handlers=[
        RotatingFileHandler(
            LOG_FILE,
            maxBytes=10 * 1024 * 1024,  # 10MB per file
            backupCount=5,  # Keep 5 backup files
            encoding="utf-8",
        ),
        logging.StreamHandler(),  # Also keep console output
    ],
)

settings = get_settings()
app = FastAPI(title="RAG Video Q&A", version="1.0.0")

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

app.include_router(ingest.router, prefix="/api/v1")
app.include_router(query.router, prefix="/api/v1")


@app.get("/health")
def health_check():
    return {"status": "ok"}