from fastapi import FastAPI
from apscheduler.schedulers.background import BackgroundScheduler
from apscheduler.triggers.cron import CronTrigger
from app.database import init_db, cleanup_old_cache_entries
from app.config import CLEANUP_CRON, CACHE_EXPIRY_HOURS
from app.routes import health, browser, cache

# Create FastAPI app
app = FastAPI()

# Include routers
app.include_router(health.router)
app.include_router(browser.router)
app.include_router(cache.router)

# Initialize scheduler for periodic cache cleanup
scheduler = BackgroundScheduler()
scheduler.add_job(
    cleanup_old_cache_entries,
    CronTrigger.from_crontab(CLEANUP_CRON),
    id='cache_cleanup_job',
    replace_existing=True
)

# Initialize database on startup
init_db()

# Start the scheduler when the application starts
@app.on_event("startup")
def start_scheduler():
    scheduler.start()
    print(f"Cache cleanup scheduler started with cron: {CLEANUP_CRON}")
    print(f"Cache entries will expire after {CACHE_EXPIRY_HOURS} hours")

# Shutdown the scheduler when the application stops
@app.on_event("shutdown")
def shutdown_scheduler():
    scheduler.shutdown(wait=False)
    print("Cache cleanup scheduler stopped")