Develop slack bot in python using chat.postMessage

In the previous article, I created a bot that returns a specific string to a mention. https://qiita.com/tokoroten_346/items/0aa9c04d5d3f2a956cd2

This time, we will give the bot a little more functionality.

The structure of the file looks like this like last time

hello
 ├ hello.py              #File to launch the bot
 ├ slackbot_settings.py  #File to write bot settings(slack token etc.)。
 └─plugins
   └┬ __init__.py          #It seems that the sky is okay ...
    └ bot_module.py        #This time I will describe it here and add the functions of the bot

Immediately describe it in bot_module.py and add the bot's response. First, create the following functions. · Responses to specific words in mentions (using respond_to) · Responses to specific words in the channel (using listen_to)

The code looks like this

bot_module.py

from slackbot.bot import respond_to
from slackbot.bot import listen_to

# respond_to responds when mentioning
@respond_to('Hello')
def mention_function(message):
    #Return a response to slack
    message.reply('World')

# listen_to responds to words in the channel
@listen_to('Good morning')
def lesten_function(message):
    #Return a response to slack
   message.reply('Japanese Gowakarimasen')

Respond to mention with @respond_to. @listen_to describes the response to the channel.

Other codes are the same as last time

hello.py

from slackbot.bot import Bot

def main():
    bot = Bot()
    bot.run()

if __name__ == "__main__":
    print("Hello bot")
    main()

slackbot_settings.py

#Specify the token of the bot account you got earlier
API_TOKEN = "xxxx-xxxxxxxxxx-xxxxxxxxxx-xxxxxxxxxxxxxxxxx"

#Write the default response for this bot
DEFAULT_REPLY = "Good morning"

#List of subdirectory names where plugin scripts are located
PLUGINS = ['plugins']

When you run this bot, it will look like this:

"World" is returned for "Hello" mentions, "Nihongowakarimasen" is returned for "Good morning" in the channel, and "No reply ..." is returned for unregistered mentions. By the way, if the mention and the post in the channel are reversed, it will not respond well.

Now that we can reply with listen_to and respond_to, we will use the api of chat.postMessage next. https://api.slack.com/methods/chat.postMessage

Change bot_module.py as follows.

bot_module.py

from slackbot.bot import respond_to
from slackbot.bot import listen_to
import json
import requests

# respond_to responds when mentioning
@respond_to('Hello')
def mention_function(message):
    post_url = 'https://slack.com/api/chat.postMessage'
    token = 'xxxx-xxxxxxxxx…'  #Describe Bot User OAuth Access Token
    channel = 'xxxxxxx'        #The string at the end of the channel URL
    username = 'Greeting bot'       #bot name
    icon_emoji = ':ghost:'     #Display icon(This time I will make it a ghost)
    text       =  'Good morning ~'    #Return a response to slack

    #Described in json format
    attachments = [{
        'text': text,
    }]

    payload = {
        'token': token,
        'channel': channel,
        'username': username,
        'icon_emoji': icon_emoji,
        'attachments': json.dumps(attachments)
    }

    res = requests.post(post_url, data=payload)
    print (res.status_code)

# listen_to responds to words in the channel
@listen_to('Good morning')
def lesten_function(message):
    #Return a response to slack
   message.reply('Japanese Gowakarimasen')

Do this and send Hello and mention to slacktest

The icon is a ghost greeting bot and you will return good morning. By using chat.postMessage, you can change the icon and write in json.