"""
ArchStore Backend — Main Application
A lightweight package store API for Arch Linux.
"""

import sys
import os

# Add backend directory to path for imports
sys.path.insert(0, os.path.dirname(__file__))

from contextlib import asynccontextmanager
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from database.db import db
from api.routes import packages, updates, categories


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Application lifecycle: startup and shutdown."""
    # Startup
    await db.connect()
    print("✓ Database connected")
    print("✓ ArchStore backend ready")
    yield
    # Shutdown
    await db.close()
    print("✗ Database disconnected")


app = FastAPI(
    title="ArchStore API",
    description="A lightweight package store API for Arch Linux combining pacman and AUR.",
    version="1.0.0",
    lifespan=lifespan,
)

# CORS — allow frontend dev server
app.add_middleware(
    CORSMiddleware,
    allow_origins=[
        "http://localhost:5173",
        "http://127.0.0.1:5173",
        "http://localhost:3000",
    ],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Mount route modules
app.include_router(packages.router)
app.include_router(updates.router)
app.include_router(categories.router)


@app.get("/")
async def root():
    """Health check endpoint."""
    return {
        "name": "ArchStore API",
        "version": "1.0.0",
        "status": "running",
    }


@app.get("/api/health")
async def health():
    """Detailed health check."""
    return {
        "status": "healthy",
        "database": "connected",
        "version": "1.0.0",
    }


@app.post("/api/cache/clear")
async def clear_cache():
    """Clear all cached data."""
    await db.clear_cache()
    return {"status": "ok", "message": "Cache cleared"}