#!/usr/bin/env python3

"""
This mirror status checker determines whether CSC mirror is up-to-date with upstream
"""

from datetime import datetime, timedelta
import requests

SUCCESS = "Success: {} up-to-date"
FAILURE = "Failure: {} out-of-sync"
ERROR = "Error: {}\n{}"

if __name__ == "__main__":
    # Arch
    try:
        arch_json = requests.get("https://archlinux.org/mirrors/status/json/").json()
        last_check_str = arch_json["last_check"]
        last_sync_str = [url for url in arch_json["urls"] if url["url"] == \
                         "http://mirror.csclub.uwaterloo.ca/archlinux/"][0]["last_sync"]
        last_check_dt = datetime.strptime(last_check_str, "%Y-%m-%dT%H:%M:%S.%fZ")
        last_sync_dt = datetime.strptime(last_sync_str, "%Y-%m-%dT%H:%M:%SZ")
        # According to https://archlinux.org/mirrors/status/:
        # Due to the timing of mirror checks, any value under one hour should be viewed as ideal
        OUTPUT = SUCCESS if last_check_dt < last_sync_dt + timedelta(hours = 1) else FAILURE
        print(OUTPUT.format("Arch"))
    except requests.exceptions.RequestException as err:
        print(ERROR.format("Arch", err))