"""
C-Stone Invoice Check — Hauptanwendung
FastAPI Backend für Email-Filterung und Rechnungsverarbeitung
"""

from fastapi import FastAPI, Depends, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
from sqlalchemy.orm import Session

from backend.database import get_db, engine, Base
from backend import auth

# Models importieren für Alembic
from backend.models import Invoice, InvoiceDetail

# Routers
from backend.routers import emails, invoices

# App erstellen
app = FastAPI(
    title="C-Stone Invoice Check API",
    description="Email-Filterung und Rechnungsverarbeitung",
    version="1.0.0",
    docs_url="/docs",
    redoc_url="/redoc"
)

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

# Health Check
@app.get("/health")
async def health_check(db: Session = Depends(get_db)):
    """Health Check Endpoint"""
    try:
        db.execute("SELECT 1")
        return {"status": "healthy", "database": "connected"}
    except Exception as e:
        return {"status": "unhealthy", "database": "disconnected", "error": str(e)}

# Initialisierung
@app.on_event("startup")
async def startup_event():
    """Datenbank erstellen bei Start"""
    Base.metadata.create_all(bind=engine)

# Router einbinden
app.include_router(auth.router, prefix="/auth", tags=["authentication"])
app.include_router(emails.router, prefix="/emails", tags=["emails"])
app.include_router(invoices.router, prefix="/invoices", tags=["invoices"])

if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8001)