MaxGoldtBot

This is a Reddit bot. It reads all submissions and comments from a subreddit and checks if they contain any links to bild.de. If so, the bot responds with the following quote from German writer Max Goldt:

Diese Zeitung ist ein Organ der Niedertracht. Es ist falsch, sie zu lesen. Jemand, der zu dieser Zeitung beiträgt, ist gesellschaftlich absolut inakzeptabel. Es wäre verfehlt, zu einem ihrer Redakteure freundlich oder auch nur höflich zu sein. Man muß so unfreundlich zu ihnen sein, wie es das Gesetz gerade noch zuläßt. Es sind schlechte Menschen, die Falsches tun.

The response comment will also contain archive.is versions of the linked bild.de articles, so that future readers are not forced to visit bild.de if they want to read the article.

This program is licensed under the MIT license, see the LICENSE file. To see what has changed over time, have a look at CHANGELOG.md.

Prerequisites

To run this bot, you will need:

• Python 3 (tested with 3.5.2 and 3.4.2 on Ubuntu and Debian)
• The following packages (install via pip / pip3):
  • archiveis (a simple wrapper for archive.is)
  • praw (the Python Reddit wrapper)

Setup

Rename the MaxGoldtBot.ini.sample file to MaxGoldtBot.ini. In this file, store the configuration values for your bot. See section Configuration for more information.

Running the Bot

To run the bot, simply call it with the name of a subreddit as an argument:

$ ./MaxGoldtBot.py MySubreddit

Running the bot as a systemd service

If you wish to run this bot as a systemd user service, modify MaxGoldtBot@.service and fill in the relevant paths. Then copy the file to ~/.config/systemd/user/:

$ mkdir -pv ~/.config/systemd/user && cp MaxGoldtBot@.service ~/.config/systemd/user/

If you wish to run this service on boot (e.g. not only when you are logged in), you need to enable lingering (see loginctl man page):

# loginctl enable-linger YOURUSERNAME

After that, you can enable the bot service for any subreddit with the following command:

$ systemctl --user enable MaxGoldtBot@SUBREDDIT.service

To start the bot immediately, run:

$ systemctl --user start MaxGoldtBot@SUBREDDIT.service

Command-line options

Configuration file

By default, the bot reads its configuration from MaxGoldtBot.ini in the current directory. However, you can pass any configuration file name you like to the --config option.

Logging

By default, the bot will log to standard output and only display messages with a loglevel of WARNING or above. Use --loglevel to change the minimum loglevel (possible values are DEBUG, INFO, WARNING, ERROR, CRITICAL).

If you wish to log messages into a file instead of standard output, you can pass a filename to the --logfile option.

Processed comments

The bot keeps a list of already processed comments to avert responding to any comments twice. By default, this list is stored in a file called processed_comments_SUBREDDIT.txt in the current directory. You can override the path to this file with the --procfile option.

Processed submissions

The bot also keeps a list of already processed submissions to avert responding to any submissions twice. By default, this list is stored in a file called processed_submissions_SUBREDDIT.txt in the current directory. You can override the path to this file with the --prosfile option.

Sleep time

When the bot gets an API exception from Reddit (e.g. because the bot is trying too hard or because there are connectivity issues), it will go to sleep for a while. By default, this sleep time is 15 minutes. However, you can override this time with --sleeptime SECONDS.

Configuration

The sample configuration file (MaxGoldtBot.ini.sample) should give you a good idea of what you need to configure to make this bot work. The configuration file should contain the following items in a section called [MaxGoldtBot]:

• client_id -- this is the ID of your Reddit application. To obtain one, go to reddit.com > preferences > apps and create a new app of type "script". The client ID is displayed beneath your application's name.
• client_secret -- this is the secret key of your Reddit application. Never let anyone see this! You can find it in the details of your app under reddit.com > preferences > apps.
• user_agent -- this is a User-Agent string that the bot will provide to Reddit when making requests. The default sample is a good idea. Generally, the User-Agent string should have the following format: platform:tld.yourdomain.yourapp:vX.Y.Z (by /u/YourUsername)
• username -- this is the username of your Reddit bot.
• password -- this is your Reddit bot's password. Without it, the bot can read Reddit comments, but cannot reply to them.

Subreddit

This bot has its own subreddit where you can ask questions and make suggestions: /r/MaxGoldtBot