from fastapi import FastAPI, Request
from datetime import datetime, timezone, timedelta

app = FastAPI()

@app.post("/webhook")
async def receive_webhook(request: Request):
    payload = await request.json()
    print("📥 Webhook received:")

    # Define GMT+3 offset
    gmt_plus_3 = timezone(timedelta(hours=3))

    # Top-level fields
    print(f"Request ID: {payload.get('request_id')}")
    print(f"Object: {payload.get('object')}")
    print(f"Time (Unix): {payload.get('time')}")
    try:
        formatted_time = datetime.fromtimestamp(payload.get('time'), gmt_plus_3).strftime('%Y-%m-%d %H:%M:%S GMT+3')
        print(f"Time (Formatted): {formatted_time}")
    except Exception:
        print("Time (Formatted): Invalid timestamp")
    print("----")

    # Loop through entries
    for entry in payload.get('entry', []):
        print(f"Lead ID: {entry.get('id')}")
        print(f"Page ID: {entry.get('page_id')}")
        print(f"Page Name: {entry.get('page_name')}")
        print(f"Campaign ID: {entry.get('campaign_id')}")
        print(f"Campaign Name: {entry.get('campaign_name')}")
        print(f"Ad Group ID: {entry.get('adgroup_id')}")
        print(f"Ad Group Name: {entry.get('adgroup_name')}")
        print(f"Ad ID: {entry.get('ad_id')}")
        print(f"Ad Name: {entry.get('ad_name')}")
        
        create_ts = entry.get('create_time')
        print(f"Create Time (Unix): {create_ts}")
        try:
            formatted_create_time = datetime.fromtimestamp(create_ts, gmt_plus_3).strftime('%Y-%m-%d %H:%M:%S GMT+3')
            print(f"Create Time (Formatted): {formatted_create_time}")
        except Exception:
            print("Create Time (Formatted): Invalid timestamp")

        print(f"Advertiser ID: {entry.get('advertiser_id')}")
        print(f"Advertiser Name: {entry.get('advertiser_name')}")
        print(f"Library ID: {entry.get('library_id')}")
        print(f"Lead Source: {entry.get('lead_source')}")
        print("----")

        # Lead field values
        for change in entry.get('changes', []):
            print(f"{change.get('field').capitalize()}: {change.get('value')}")
        print("----")

    return {"status": "ok"}