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

from core.config import settings
from core.database import connect_to_mongo, close_mongo_connection
from routers import auth, plants, scans, alerts, care, chat, ai

# Lifespan context manager for startup/shutdown events
@asynccontextmanager
async def lifespan(app: FastAPI):
    # Startup
    await connect_to_mongo()
    yield
    # Shutdown
    await close_mongo_connection()


# Create FastAPI app
app = FastAPI(
    title="GreenBuddy API",
    description="Backend API for the GreenBuddy plant care application",
    version="1.0.0",
    lifespan=lifespan
)

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

# Include routers
app.include_router(auth.router)
app.include_router(plants.router)
app.include_router(scans.router)
app.include_router(alerts.router)
app.include_router(care.router)
app.include_router(chat.router)
app.include_router(ai.router)


# Health check endpoint
@app.get("/health")
async def health_check():
    """Health check endpoint."""
    return {"status": "ok"}


# Root endpoint
@app.get("/")
async def root():
    """Root endpoint with API information."""
    return {
        "message": "GreenBuddy API",
        "version": "1.0.0",
        "docs": "/docs",
        "openapi": "/openapi.json"
    }


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