add tars slash command

requirements.txt

@@ -3,3 +3,4 @@ Flask
 gunicorn
 requests
 cryptography
+redis

webhooks.py

@@ -5,6 +5,7 @@ import hashlib
 import requests
 import yaml
 import os
+import redis
 
 from cryptography.hazmat.primitives.asymmetric.ed25519 import Ed25519PublicKey
 from flask import Flask, jsonify, request, abort
@@ -15,6 +16,8 @@ app = Flask(__name__)
 SNAP_USER_DATA = os.environ.get('SNAP_USER_DATA')
 CONFIG_FILE = os.environ.get('CONFIG_FILE')
 LOG_FILE = os.environ.get('LOG_FILE')
+REDIS_HOST = os.environ.get('REDIS_HOST', 'localhost')
+REDIS_PORT = os.environ.get('REDIS_PORT', 6379)
 if SNAP_USER_DATA is None:
     if CONFIG_FILE is None:
         filename = 'config.yaml'
@@ -34,6 +37,8 @@ logging.basicConfig(level=logging.DEBUG, filename=log_file)
 with open(filename, "rb") as config_file:
     config = yaml.load(config_file, Loader=yaml.SafeLoader)
 
+rs = redis.Redis(host=REDIS_HOST, port=REDIS_PORT)
+
 srht_public_key = Ed25519PublicKey.from_public_bytes(
         base64.b64decode(config['srht_payload_sig']))
 # GitHub webhooks
@@ -335,3 +340,40 @@ def srht_event(user, repo, gateway):
         logging.exception('SRHT')
 
     return '', 200
+
+@app.route('/tars/', methods=['POST'])
+def feedbot_cmd():
+    token = request.headers['Authorization']
+    user_id = request.form['user_id']
+    reply = {"username": "tars"}
+    cmd_text = request.form['text']
+    cmd_help = '''
+    The following commands are available:
+
+    xpost-on:   turn on cross posts from mastodon to pnut
+    xpost-off:  turn off cross posts from mastodon to pnut
+    '''
+
+    if token != "Token " + config['mm_tars_token']:
+        logging.debug("INVALID TOKEN")
+        abort(401)
+
+    if user_id != config['mm_user_id']:
+        logging.debug("UNAUTHORIZED USER")
+        abort(403)
+
+    if cmd_text == "xpost-on":
+        logging.debug("enable crossposts")
+        rs.rpush('TARS', "feedbot_enable")
+        reply['text'] = "crossposts will be enabled"
+
+    elif cmd_text == "xpost-off":
+        logging.debug("disable crossposts")
+        rs.rpush('TARS', "feedbot_disable")
+        reply['text'] = "crossposts will be disabled"
+
+    else:
+        logging.debug("SHOW HELP?")
+        reply['text'] = cmd_help
+
+    return reply, 200