jamesbvaughan · March 7, 2017 08:29 · Mar 7, 2017
diff --git a/postmates.py b/postmates.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+from bs4 import BeautifulSoup
+from twilio.rest import TwilioRestClient
+import json
+import os
+import re
+import requests
+
+
+url = 'https://postmates.com/los-angeles'
+
+
+def sendText(body):
+    account_sid = os.environ['TWILIO_ACCOUNT_SID']
+    auth_token = os.environ['TWILIO_AUTH_TOKEN']
+    twilio_number = os.environ['TWILIO_PHONE_NUMBER']
+    number_file = os.environ['POSTMATES_NUMBERS']
+
+    client = TwilioRestClient(account_sid, auth_token)
+
+    with open(number_file, 'r') as numbers:
+        for number in numbers:
+            client.messages.create(body=body, to=number, from_=twilio_number)
+
+
+def extractFreeFoodFromSoup(soup):
+    regex = re.compile('free')
+    strings = list(soup.stripped_strings)
+    freeFood = [s for s in strings if regex.match(s.lower())]
+    return freeFood
+
+
+def hasNewFreeFood(freeFood):
+    try:
+        foodFile = open('/tmp/freefood', 'r+')
+        previousFreeFood = json.load(foodFile)
+    except (FileNotFoundError, json.decoder.JSONDecodeError):
+        foodFile = open('/tmp/freefood', 'w+')
+        previousFreeFood = []
+
+    foodFile.seek(0)
+    foodFile.truncate()
+    json.dump(freeFood, foodFile)
+    foodFile.close()
+
+    return freeFood != previousFreeFood
+
+
+def main():
+    postmatesPage = requests.get(url)
+    soup = BeautifulSoup(postmatesPage.text, 'html.parser')
+
+    freeFood = extractFreeFoodFromSoup(soup)
+
+    if hasNewFreeFood(freeFood):
+        sendText('Free Postmates!\n\n' + '\n'.join(freeFood))
+
+
+if __name__ == '__main__':
+    main()
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