Add an example for #62

Author: seratch

example/working_with_proxy/example.py

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+# ------------------
+# Only for running this script here
+import logging
+import sys
+from os.path import dirname
+
+sys.path.insert(1, f"{dirname(__file__)}/../..")
+logging.basicConfig(level=logging.DEBUG)
+# ------------------
+
+from slackeventsapi import SlackEventAdapter
+from slack import WebClient
+import os
+
+slack_signing_secret = os.environ["SLACK_SIGNING_SECRET"]
+slack_events_adapter = SlackEventAdapter(slack_signing_secret, "/slack/events")
+
+# pip install proxy.py
+# proxy --port 9000 --log-level d
+proxy_info = "http://localhost:9000"
+slack_bot_token = os.environ["SLACK_BOT_TOKEN"]
+slack_client = WebClient(token=slack_bot_token, proxy=proxy_info)
+
+@slack_events_adapter.on("message")
+def handle_message(event_data):
+    message = event_data["event"]
+    if message.get("subtype") is None and "hi" in message.get('text'):
+        channel = message["channel"]
+        message = "Hello <@%s>! :tada:" % message["user"]
+        slack_client.chat_postMessage(channel=channel, text=message)
+
+
+@slack_events_adapter.on("reaction_added")
+def reaction_added(event_data):
+    event = event_data["event"]
+    emoji = event["reaction"]
+    channel = event["item"]["channel"]
+    text = ":%s:" % emoji
+    slack_client.chat_postMessage(channel=channel, text=text)
+
+@slack_events_adapter.on("error")
+def error_handler(err):
+    print("ERROR: " + str(err))
+
+if __name__ == '__main__':
+    slack_events_adapter.start(port=3000)
+
+# -------------------------------
+
+# (Terminal A)
+# source env/bin/activate
+# (env) $ export SLACK_BOT_TOKEN=xoxb-***
+# (env) $ export SLACK_SIGNING_SECRET=**
+# (env) $ FLASK_ENV=development python example/working_with_proxy/example.py
+
+# (Terminal B)
+# source env/bin/activate
+# (env) $ proxy --port 9000 --log-level d
+
+# (Terminal C)
+# ngrok http 3000
+
+# in Slack
+# /invite @{your app's bot user}
+# post a message "hi" in the channel

example/working_with_proxy/requirements.txt

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+slackclient>=2.7.1
+slackeventsapi>=2.1.0
+flask>=1
+proxy.py>=2.1.2