from fastapi import FastAPI, HTTPException, Depends
from fastapi.middleware.cors import CORSMiddleware
from db import MongoDB, get_database
from config import get_settings
from routers import entries, users
from contextlib import asynccontextmanager

settings = get_settings()


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Startup
    MongoDB.connect_db()
    yield
    # Shutdown
    MongoDB.close_db()

app = FastAPI(
    title="Grateful Journal API",
    description="Backend API for Grateful Journal - private journaling app",
    version="0.1.0",
    lifespan=lifespan
)

# CORS middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=[settings.frontend_url,
                   "http://localhost:8000", "http://127.0.0.1:8000"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include routers
app.include_router(users.router, prefix="/api/users", tags=["users"])
app.include_router(entries.router, prefix="/api/entries", tags=["entries"])


@app.get("/health")
async def health_check():
    return {
        "status": "ok",
        "environment": settings.environment,
        "api_version": "0.1.0"
    }


@app.get("/")
async def root():
    return {
        "message": "Grateful Journal API",
        "version": "0.1.0",
        "docs": "/docs"
    }

if __name__ == "__main__":
    import uvicorn
    uvicorn.run(
        "main:app",
        host="0.0.0.0",
        port=settings.api_port,
        reload=settings.environment == "development"
    )