"""
BMC Hub - FastAPI Application
Main application entry point
"""

import logging
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from fastapi.responses import RedirectResponse
from contextlib import asynccontextmanager

from app.core.config import settings
from app.core.database import init_db
from app.routers import (
    customers,
    hardware,
    billing,
    system,
)

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
    handlers=[
        logging.StreamHandler(),
        logging.FileHandler('logs/app.log')
    ]
)

logger = logging.getLogger(__name__)

@asynccontextmanager
async def lifespan(app: FastAPI):
    """Lifecycle management - startup and shutdown"""
    # Startup
    logger.info("🚀 Starting BMC Hub...")
    logger.info(f"Database: {settings.DATABASE_URL}")
    
    init_db()
    
    logger.info("✅ System initialized successfully")
    yield
    # Shutdown
    logger.info("👋 Shutting down...")

# Create FastAPI app
app = FastAPI(
    title="BMC Hub API",
    description="""
    Central management system for BMC Networks.
    
    **Key Features:**
    - Customer management
    - Hardware tracking
    - Service management
    - Billing integration
    """,
    version="1.0.0",
    lifespan=lifespan,
    docs_url="/api/docs",
    redoc_url="/api/redoc",
    openapi_url="/api/openapi.json"
)

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

# Include routers
app.include_router(customers.router, prefix="/api/v1", tags=["Customers"])
app.include_router(hardware.router, prefix="/api/v1", tags=["Hardware"])
app.include_router(billing.router, prefix="/api/v1", tags=["Billing"])
app.include_router(system.router, prefix="/api/v1", tags=["System"])

# Serve static files (UI)
app.mount("/static", StaticFiles(directory="static", html=True), name="static")

@app.get("/")
async def root():
    """Redirect to dashboard"""
    return RedirectResponse(url="/static/index.html")

@app.get("/health")
async def health_check():
    """Health check endpoint"""
    return {
        "status": "healthy",
        "service": "BMC Hub",
        "version": "1.0.0"
    }

if __name__ == "__main__":
    import uvicorn
    import os
    
    # Only enable reload in local development (not in Docker)
    enable_reload = os.getenv("ENABLE_RELOAD", "false").lower() == "true"
    
    if enable_reload:
        uvicorn.run(
            "main:app",
            host="0.0.0.0",
            port=8000,
            reload=True,
            reload_includes=["*.py"],
            reload_dirs=["app"],
            log_level="info"
        )
    else:
        uvicorn.run(
            "main:app",
            host="0.0.0.0",
            port=8000,
            reload=False
        )