#!/usr/bin/env python3
"""
Cron script: fetch daily USD/VND exchange rate.
Run by systemd timer pfm-fxrate.timer at 8AM daily.
"""

import sys
import os
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from app import create_app
from app.services.fx_service import get_today_rate

app = create_app()

if __name__ == '__main__':
    with app.app_context():
        result = get_today_rate()
        if result:
            status = '(stale)' if result.get('is_stale') else ''
            print(f"[fx_rate] 1 USD = {result['rate']:,.0f} VND "
                  f"[{result['source']}] {result['date']} {status}")
        else:
            print("[fx_rate] Failed to fetch rate.")
            sys.exit(1)