main.py

from fastapi import FastAPI, Request, Response
import os
import requests
import json
import logging

# Set up logging
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

# Configurations
SLACK_WEBHOOK_URL = os.environ.get("SLACK_WEBHOOK_URL")

MODEL_CATALOG_WEBHOOK = os.environ.get("MODEL_CATALOG_WEBHOOK")
MODEL_CATALOG_WEBHOOK_SECRET = os.environ.get("MODEL_CATALOG_WEBHOOK_SECRET")

SIMSHIP_WEBHOOK = os.environ.get("SIMSHIP_WEBHOOK")
SIMSHIP_WEBHOOK_SECRET = os.environ.get("SIMSHIP_WEBHOOK_SECRET")

def send_slack_message(message: str):
    """Send a message to Slack using webhook URL"""
    if not SLACK_WEBHOOK_URL:
        logger.warning(f"No Slack webhook URL configured. Message: {message}")
        return
    
    payload = {"text": message}
    try:
        response = requests.post(SLACK_WEBHOOK_URL, json=payload)
        response.raise_for_status()
        logger.info(f"Slack message sent successfully: {message}")
    except requests.exceptions.RequestException as e:
        logger.error(f"Failed to send Slack message: {e}")

def process_model_catalog_webhook(data: dict):
    """
    Process model catalog webhook
    """

    event = data.get("event", {})
    repo = data.get("repo", {})
    movedTo = data.get("movedTo", {})
    
    # repo name changed
    if (
        repo.get("type") == "model" and
        event.get("scope") == "repo" and
        event.get("action") == "move"
    ):
        message = f"🔄 Model in the catalog renamed: {repo.get('name', '')} → https://hf.co/{movedTo.get('name', '')}"
        send_slack_message(message)

    # repo deleted
    elif (
        repo.get("type") == "model" and
        event.get("scope") == "repo" and
        event.get("action") == "delete"
    ):
        message = f"🗑️ Model in the catalog deleted: https://hf.co/{repo.get('name', '')}"
        send_slack_message(message)

    # other events
    else:
        pass

def process_simship_webhook(data: dict):
    """
    Process simship webhook
    """
    event = data.get("event", {})
    repo = data.get("repo", {})
    updatedConfig = data.get("updatedConfig", {})
    
    # repo creation
    if (
        repo.get("type") == "model" and
        event.get("scope") == "repo" and
        event.get("action") == "create"
    ):
        message = f"🆕 SimShip Model created: https://hf.co/{repo.get('name', '')}"
        send_slack_message(message)

    # repo visibility update
    elif (
        repo.get("type") == "model" and
        event.get("scope") == "repo.config" and
        event.get("action") == "update" and
        updatedConfig.get("private") is False
    ):
        message = f"🆕 SimShip Model made public: https://hf.co/{repo.get('name', '')}"
        send_slack_message(message)

    # other events
    else:
        pass


app = FastAPI()

@app.post("/webhook")
async def webhook(request: Request):
    logger.info(f"Received webhook request from {request.client.host}")
    if request.headers.get("X-Webhook-Secret") not in {MODEL_CATALOG_WEBHOOK_SECRET, SIMSHIP_WEBHOOK_SECRET}:
        logger.warning("Invalid webhook secret received")
        return Response("Invalid secret", status_code=401)
    
    data = await request.json()
    logger.info(f"Webhook payload: {json.dumps(data, indent=2)}")

    webhook_id = data.get("webhook", {}).get("id", None)
    
    if webhook_id == MODEL_CATALOG_WEBHOOK:
        logger.info("Processing model catalog webhook")
        process_model_catalog_webhook(data)
    elif webhook_id == SIMSHIP_WEBHOOK:
        logger.info("Processing simship webhook")
        process_simship_webhook(data)
    else:
        logger.warning("Invalid webhook ID received")
        return Response("Invalid webhook ID", status_code=401)
    
    return Response("Webhook notification received and processed!", status_code=200)