"""
Bot Detector Dashboard - API Backend
FastAPI application pour servir le dashboard web
"""
import logging
from contextlib import asynccontextmanager
from fastapi import FastAPI, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from fastapi.responses import FileResponse
import os

from .config import settings
from .database import db
from .routes import metrics, detections, variability, attributes, analysis, entities, incidents, audit

# Configuration logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Gestion du cycle de vie de l'application"""
    # Startup
    logger.info("Démarrage du Bot Detector Dashboard API...")
    logger.info(f"ClickHouse: {settings.CLICKHOUSE_HOST}:{settings.CLICKHOUSE_PORT}")
    logger.info(f"Database: {settings.CLICKHOUSE_DB}")
    
    # Tester la connexion ClickHouse
    try:
        client = db.connect()
        client.ping()
        logger.info("Connexion ClickHouse établie avec succès")
    except Exception as e:
        logger.error(f"Échec de connexion ClickHouse: {e}")
        raise
    
    yield
    
    # Shutdown
    logger.info("Arrêt du Bot Detector Dashboard API...")
    db.close()


# Création de l'application FastAPI
app = FastAPI(
    title="Bot Detector Dashboard API",
    description="API pour le dashboard de visualisation des détections Bot Detector",
    version="1.0.0",
    lifespan=lifespan
)

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

# Enregistrement des routes
app.include_router(metrics.router)
app.include_router(detections.router)
app.include_router(variability.router)
app.include_router(attributes.router)
app.include_router(analysis.router)
app.include_router(entities.router)
app.include_router(incidents.router)
app.include_router(audit.router)


# Route pour servir le frontend
@app.get("/")
async def serve_frontend():
    """Sert l'application React"""
    frontend_path = os.path.join(os.path.dirname(__file__), "..", "frontend", "dist", "index.html")
    if os.path.exists(frontend_path):
        return FileResponse(frontend_path)
    return {"message": "Dashboard API - Frontend non construit. Voir /docs pour l'API."}


# Servir les assets statiques
assets_path = os.path.join(os.path.dirname(__file__), "..", "frontend", "dist", "assets")
if os.path.exists(assets_path):
    app.mount("/assets", StaticFiles(directory=assets_path), name="assets")


# Health check
@app.get("/health")
async def health_check():
    """Endpoint de santé pour le health check Docker"""
    try:
        db.connect().ping()
        return {"status": "healthy", "clickhouse": "connected"}
    except Exception as e:
        return {"status": "unhealthy", "clickhouse": "disconnected", "error": str(e)}


# Route catch-all pour le routing SPA (React Router) - DOIT ÊTRE EN DERNIER
# Sauf pour /api/* qui doit être géré par les routers
@app.get("/{full_path:path}")
async def serve_spa(full_path: str):
    """Redirige toutes les routes vers index.html pour le routing React"""
    # Ne pas intercepter les routes API
    if full_path.startswith("api/"):
        raise HTTPException(status_code=404, detail="API endpoint not found")
    
    frontend_path = os.path.join(os.path.dirname(__file__), "..", "frontend", "dist", "index.html")
    if os.path.exists(frontend_path):
        return FileResponse(frontend_path)
    return {"message": "Dashboard API - Frontend non construit"}


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(
        "main:app",
        host=settings.API_HOST,
        port=settings.API_PORT,
        reload=True
    )