from contextlib import asynccontextmanager
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
import logging

from app.config import settings
from app.routers import auth, chatbots, documents, chat, marketplace, billing, models

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


# BUG-13 FIX: Replace deprecated @app.on_event("startup") with lifespan
@asynccontextmanager
async def lifespan(app: FastAPI):
    # Startup
    logger.info("Contexta API starting up...")
    logger.info(f"Environment: {settings.app_env}")
    logger.info(f"Allowed origins: {settings.allowed_origins_list}")
    yield
    # Shutdown
    logger.info("Contexta API shutting down...")


# ── App ──────────────────────────────────────────────────────────────────────────
app = FastAPI(
    title="Contexta API",
    description="AI Chatbot Platform - Create, deploy and share custom AI chatbots powered by your data",
    version="1.0.0",
    docs_url="/docs",
    redoc_url="/redoc",
    lifespan=lifespan,
)

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

# ── Routers ────────────────────────────────────────────────────────────────────
app.include_router(auth.router, prefix="/api/v1")
app.include_router(chatbots.router, prefix="/api/v1")
app.include_router(documents.router, prefix="/api/v1")
app.include_router(chat.router, prefix="/api/v1")
app.include_router(marketplace.router, prefix="/api/v1")
app.include_router(billing.router, prefix="/api/v1")
app.include_router(models.router, prefix="/api/v1")

# ── Health & Info ──────────────────────────────────────────────────────────────
@app.get("/")
async def root():
    return {
        "name": "Contexta API",
        "version": "1.0.0",
        "status": "running",
        "docs": "/docs",
    }


@app.get("/health")
async def health():
    return {"status": "healthy", "environment": settings.app_env}


# ── Sentry ─────────────────────────────────────────────────────────────────────
if settings.sentry_dsn:
    import sentry_sdk
    sentry_sdk.init(dsn=settings.sentry_dsn, traces_sample_rate=0.1)
    logger.info("Sentry initialized")


if __name__ == "__main__":
    import uvicorn
    uvicorn.run("app.main:app", host="0.0.0.0", port=8000, reload=True)