Notifies when loot arrives

loot.py

#!/usr/bin/env python
from argparse import ArgumentParser
import os
import time

from slackclient import SlackClient


def modified(cache, current):
    modified = []
    for key, value in current.iteritems():
        if key in cache and cache[key] >= value:
            continue
        modified.append(key)
        cache[key] = value
    return modified


if __name__ == "__main__":
    parser = ArgumentParser(description="watch some files")
    parser.add_argument('--seconds',
                        type=int,
                        default=300, help="seconds to check for change")
    parser.add_argument('path',
                        type=str,
                        default='.',
                        help="path to watch files")

    args = parser.parse_args()

    print "Watching: {} for updates every {}s".format(
        args.path,
        args.seconds)
    cache = {}

    def update():
        current = {}
        for file in os.listdir(args.path):
            current[file] = os.lstat(os.path.join(args.path, file)).st_mtime
        return modified(cache, current)

    update()

    while True:
        time.sleep(args.seconds)
        changes = update()
        if len(changes) > 0:
            client = SlackClient(os.environ['SLACK_API_TOKEN'])
            text = ":moneybag: has arrived: {}".format(
                ",".join(changes)
            )
            client.api_call(
                "chat.postMessage",
                channel="#loot",
                username="Money Bot",
                icon_emoji="banana",
                text=text
            )