"""
FastAPI application factory and middleware setup.

Configures CORS, authentication, and error handling.
"""
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
from app.core.settings import get_settings
from app.routers import auth, users, decks, rooms, games, admin

settings = get_settings()

app = FastAPI(
    title=settings.APP_NAME,
    version=settings.APP_VERSION,
    docs_url="/docs",
    redoc_url="/redoc",
)

# CORS configuration
app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.CORS_ORIGINS,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


# Global exception handlers
@app.exception_handler(Exception)
async def global_exception_handler(request, exc):
    """Handle unhandled exceptions gracefully."""
    return JSONResponse(
        status_code=500,
        content={"detail": "Internal server error"},
    )


# Include routers
app.include_router(auth.router, prefix="/api/v1/auth", tags=["Authentication"])
app.include_router(users.router, prefix="/api/v1/users", tags=["Users"])
app.include_router(decks.router, prefix="/api/v1/decks", tags=["Decks"])
app.include_router(rooms.router, prefix="/api/v1/rooms", tags=["Rooms"])
app.include_router(games.router, prefix="/api/v1/games", tags=["Games"])
app.include_router(admin.router, prefix="/api/v1/admin", tags=["Admin"])


@app.get("/health")
async def health_check():
    """Health check endpoint for monitoring."""
    return {"status": "healthy", "version": settings.APP_VERSION}