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

from app.config import settings
from app.routers import auth, chatbots, documents, chat, marketplace, billing, models, analytics, inbox, leads, upload
from app.routers.documents import router_url_sources
from app.routers.leads import leads_public_router
from app.routers.channels import router as channels_router, webhook_router as channels_webhook_router

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


@asynccontextmanager
async def lifespan(app: FastAPI):
    logger.info("Contexta API starting up...")
    logger.info(f"Environment: {settings.app_env}")
    logger.info(f"Allowed origins: {settings.allowed_origins_list}")
    yield
    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")
app.include_router(analytics.router, prefix="/api/v1")
app.include_router(inbox.router, prefix="/api/v1")
app.include_router(leads.router, prefix="/api/v1")
app.include_router(upload.router, prefix="/api/v1")
app.include_router(router_url_sources, prefix="/api/v1")
app.include_router(leads_public_router, prefix="/api/v1")
app.include_router(channels_router, prefix="/api/v1")
app.include_router(channels_webhook_router, prefix="/api/v1")


# ── Widget ─────────────────────────────────────────────────────────────────────
@app.get("/widget.js")
async def serve_widget():
    from app.services.widget import generate_widget_js
    return Response(generate_widget_js(settings.app_url), media_type="application/javascript")


# ── 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)