I successfully add this bot to the server, but the bot is offline and I am trying to connect with DMOJ but the bot does not respond.
Can anyone tell me the steps to get the bot online?

spamming the same contest for more than two days
its 220 messages till now

Users currently store a country, so it would be helpful to list all users in a country in a server. Example of the command could be
ls <country name or iso code>

Which then returns (probably in embed so the users don't get pinged) the users of that country alphabetically ordered.

• Country class
• Toggle country command

Future Implementation

• Get the users in order of rank (DMOJ/Codeforces). Relates to #6.

Currently, users can only link their DMOJ and Codeforces account. Linking AtCoder as well would be useful.

As AtCoder does not have API tokens, the connection would likely be similar to the method used to link Codeforces accounts (submit to a problem with a token in the submission and verify via DM to the bot)

• Tutorial on how to link Codeforces
• Source code for linking Codeforces
• Third party AtCoder API

Some way to announce USACO contests when they are posted? Not sure how to do this as USACO doesn't allow access to the site without an account. If it is done, will likely require some type of web scraping

When the min-max parameters are given for the $r command for codeforces, please make the bot select a problem on the basis of "rating" instead of "points" which is a much better metric for determining the difficulty of a problem.

Sent anonymously via bot suggestion command

I was trying this bot today, nice work! thanks!

Noticed the other judges support points and points ranges like $random cf POINTS
Would be nice to have something similar for LC, perhaps easy/medium/hard instead of numeric values.

what do you think? would be a desirable feature?

requests is not async, and thous slows down the bot, you should use aiohttp instead.

The Practice Bot has been sending the message of the same LeetCode contest (Weekly Contest 242) from 29 May 2021 (More than 20 Messages till now). This contest has already ended.

Background Info:
The bot has been set up in a channel with the command: $sub #channel-name

Screenshot:

Users may have noticed in the past that some contest notifications are sent multiple times during maintenance. This issue has been resolved and should not occur again.

problems for acsl

Sent anonymously via bot suggestion command

This is just so that there is a way to keep track of the prefix of the bot when it is changed

• When setprefix sets the prefix to some prefix that is not the default prefix, the nickname should be set to Display Name [prefix]. (E.g. Practice [!] or Some Nickname [&])
• If the bot's nickname already indicates another prefix and the prefix is changed to something else, the current prefix in the name should be replaced. (E.g. Practice [!] --> !setprefix & --> Practice [&]
• If the prefix is set back to the default, the prefix in the nickname should be removed. (E.g. Practice [&] --> &setprefix or &setprefix $ --> Practice

Memory usage needs to be improved, more data should be stored in the database and not in the program to prevent the program from exceeding memory limits and getting force killed.

Everywhere where data from the database is stored when pulling from the database directly could work instead should be fixed.

When searching for generic terms, the bot may sometimes break, (e.g, $whatis cheese returns https://en.wikipedia.org/wiki/Chess ). Need to find a way to do a more exact search.

Its not working too, what I need to do to set it up?

Right now contests are announced when a contest is posted, regardless of when it starts. Contests should also be announced ~20 minutes before they start in contest notifications.

Add a functionality that allows the bot to send a random problem every time a specified period of time has passed (e.g. send a random problem every day)

Some command to get the top users in a server ranked (for DMOJ/Codeforces). Likely in a text format, possibly an embed.

DMOJ will be trivial as it has Cloudflare #4, will likely have to find a way to store user rankings or regulate how many calls can be done periodically (may have to make it an event instead of a command, where the leaderboard is posted after every contest)

While cloudflare is prevented for problem/contest fetching due to local caching, the bot may be captcha'd by DMOJ's Cloudflare during login and submission, as submission must be done with a call to DMOJ per command and storing login data locally may be a security issue.

TODO:

• Enable method to prevent high volume of calls
• Figure out secure way to store logins

This issue is low for now due to small amount of users, but may need to be addressed if number of users increases significantly.

This bot is awesome, it would really be great if CodeChef is also there in the list of contest sites.
Thanks :)

Have yet to diagnose reason, but the bot periodically uses >90% of AWS EC2 Instance CPU (about once every week) causing the instance to crash and bot to go offline until manually rebooted. Nothing is logged as the bot simply just uses too much CPU. Removing HTTP requests seems to make this time between crashes longer but doing so removes key features and only delays the crash.

Crashes from last 2 months

• Sunday 03 January, 2021 15:38:15 UTC; 98.9% CPU Usage
• Thursday 07 January, 2021 17:23:15 UTC; 99.2% CPU Usage
• Monday 18 January, 2021 10:03:15 UTC; 92.4% CPU Usage
• Monday 25 January, 2021 14:18:15 UTC; 99.2% CPU Usage
• Wednesday 03 February, 2021 08:08:15 UTC; 99.7% CPU Usage
• Tuesday 09 February, 2021 08:08:15 UTC; 99.3% CPU Usage

AWS CloudWatch CPU Usage Screenshot

Due to the privacy policy I have not logged any exact commands executed before each crash as doing so would require me to log every command executed by the bot at all times, so I am unsure if it is a certain command error causing these crashes. If the bot goes offline after running a command or event, please report it here.

Get the rating (or rating history) of a DMOJ or Codeforces account linked to a user.

DMOJ may be trivial due to Cloudflare #4.

TODO:

• API calls to get rating
• Graph rating using matplotlib

The prefix can currently be changed to invalid prefixes. Need to make it so prefix can only be set to ASCII characters.