"""FastAPI application entry point."""

from __future__ import annotations

import logging
from pathlib import Path

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

from app.api.routes import router
from app.core.config import get_settings
from app.core.logging import setup_logging

settings = get_settings()
setup_logging(settings.debug)

logger = logging.getLogger(__name__)

app = FastAPI(
    title=settings.app_name,
    version=settings.app_version,
    docs_url="/docs",
    redoc_url="/redoc",
    openapi_url="/openapi.json",
)

# CORS — mirrors PHP cors.php allowed origins
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=False,
    allow_methods=["GET", "POST", "OPTIONS"],
    allow_headers=["*"],
    expose_headers=["Content-Disposition", "Content-Length", "Content-Type"],
)

# Serve static assets (CSS, images) for Playwright to load via file://
# Also accessible at /static/ for debugging
_static_dir = Path(__file__).resolve().parent / "static"
if _static_dir.is_dir():
    app.mount("/static", StaticFiles(directory=str(_static_dir)), name="static")

app.include_router(router)


@app.on_event("startup")
async def startup_event():
    logger.info(
        "%s v%s starting on port %d (debug=%s, renderer=playwright)",
        settings.app_name,
        settings.app_version,
        settings.port,
        settings.debug,
    )


@app.on_event("shutdown")
async def shutdown_event():
    """Gracefully close the Playwright browser on shutdown."""
    from app.services.pdf_renderer import shutdown_browser
    await shutdown_browser()
    logger.info("Application shutdown complete")