"""
Main FastAPI application for Diagram PH API
"""
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.middleware.gzip import GZipMiddleware
from app.config import settings
from app.api.v1.endpoints import refrigerants, properties, diagrams, cycles
import logging

# Configure logging
logging.basicConfig(
    level=getattr(logging, settings.LOG_LEVEL),
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)

# Create FastAPI application
app = FastAPI(
    title=settings.APP_NAME,
    description="API REST pour génération de diagrammes PH et calculs frigorifiques",
    version=settings.VERSION,
    docs_url="/docs",
    redoc_url="/redoc",
)

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

# Add Gzip compression
app.add_middleware(GZipMiddleware, minimum_size=1000)

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

app.include_router(
    properties.router,
    prefix="/api/v1/properties",
    tags=["Properties"]
)

app.include_router(
    diagrams.router,
    prefix="/api/v1",
    tags=["Diagrams"]
)

app.include_router(
    cycles.router,
    prefix="/api/v1",
    tags=["Cycles"]
)


@app.on_event("startup")
async def startup_event():
    """Actions to perform on application startup"""
    logger.info(f"🚀 Starting {settings.APP_NAME} v{settings.VERSION}")
    logger.info(f"📝 Environment: {settings.ENV}")
    logger.info(f"📊 Log level: {settings.LOG_LEVEL}")
    logger.info(f"🌐 CORS origins: {settings.CORS_ORIGINS}")
    

@app.on_event("shutdown")
async def shutdown_event():
    """Actions to perform on application shutdown"""
    logger.info(f"🛑 Shutting down {settings.APP_NAME}")


@app.get("/", tags=["Root"])
def root():
    """Root endpoint - API information"""
    return {
        "message": f"Welcome to {settings.APP_NAME}",
        "version": settings.VERSION,
        "status": "running",
        "docs": "/docs",
        "redoc": "/redoc",
        "health": "/api/v1/health"
    }


@app.get("/api/v1/health", tags=["Health"])
def health_check():
    """Health check endpoint"""
    return {
        "status": "healthy",
        "service": settings.APP_NAME,
        "version": settings.VERSION,
        "environment": settings.ENV
    }


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(
        "app.main:app",
        host=settings.HOST,
        port=settings.PORT,
        reload=(settings.ENV == "development"),
        log_level=settings.LOG_LEVEL.lower()
    )