from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
import uvicorn
from contextlib import asynccontextmanager

from api.routes import scan, health
from api import dependencies


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Load models on startup, cleanup on shutdown"""
    await dependencies.initialize_models()
    yield
    dependencies.cleanup_models()


app = FastAPI(
    title="XSS Detection API",
    description="CodeBERT-based XSS vulnerability detection for PHP and JavaScript",
    version="1.0.0",
    lifespan=lifespan
)

# CORS configuration
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # In production, replace with your frontend URL
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include routers
app.include_router(scan.router, prefix="/api/v1", tags=["scan"])
app.include_router(health.router, prefix="/api/v1", tags=["health"])


@app.get("/")
async def root():
    return {
        "service": "XSS Detection API",
        "version": "1.0.0",
        "status": "running",
        "docs": "/docs"
    }


if __name__ == "__main__":
    uvicorn.run(
        "api.main:app",
        host="0.0.0.0",
        port=8080,
        reload=True,
        log_level="info"
    )