Support leetcode.cn: login works, but GraphQL schema differs from leetcode.com

[dong-frank]

I’ve tried adding leetcode.cn support in the login flow, and authentication works correctly.

However, full leetcode.cn support is not a simple base URL switch.
The GraphQL schema appears to differ between leetcode.com and leetcode.cn, so some existing queries fail on .cn.

For example:

• On leetcode.com, daily challenge uses fields like [activeDailyCodingChallengeQuestion]
• On leetcode.cn, that field is not available, and related data seems to be exposed via different fields (e.g. todayRecord, dailyQuestionRecords).

Current impact:

Login works on leetcode.cn.
Some feature queries (such as daily challenge and possibly others) return GraphQL errors due to field mismatches.

BTW, I plan to continue working on full leetcode.cn support.
If anyone has bandwidth and is interested, contributions or guidance would be greatly appreciated.
Thanks again for building and open-sourcing this project.

[night-slayer18]

Thank you for working on this..i will also try and find some common ground info for this. Please open a PR if you are able to complete before that.
Thanks Again!

edit: https://github.com/JacobLinCool/LeetCode-Query/tree/main/src/graphql
found this see if it helps

[night-slayer18]

hey @dong-frank , i went ahead and added leetcode.cn support on the dev branch based on your findings from the PR and this issue.

the main thing was handling the different graphql schemas between the two sites - daily challenge uses todayRecord instead of activeDailyCodingChallengeQuestion, user profile is completely different, etc. so i split the queries into site-specific packs and added response adapters to normalize everything.

you can pick the site during leetcode login

if you get a chance, could you test it out?

git checkout dev
npm install
npm run build
node dist/index.js login # pick leetcode.cn
node dist/index.js daily
node dist/index.js stats

lmk if anything breaks on your end. once it's validated i'll merge into main.

[dong-frank]

Thanks for your work, @night-slayer18. I tested login, daily, and stat in the CLI with leetcode.cn, and they all worked on my side.

While testing, I noticed that the TUI login flow doesn't currently support switching sites yet, so I took a pass at adding that support and opened a PR here: #9

[dong-frank]

There are still a few issues left though, for example node dist/index.js list is still failing on leetcode.cn. So I think it may be a bit early to merge this into main just yet. I'm happy to keep looking into the remaining problems and help fix them.

[dong-frank]

Hi @night-slayer18, I’ve tried to fix the bugs mentioned above and opened a PR here: #10
The branch now works normally for me on leetcode.cn. I’ll be using this CLI for LeetCode, and I’m happy to recommend it to my friends in China. Thanks again for your great work!
If you notice anything wrong, please let me know.

[night-slayer18]

Hi @dong-frank I will check and update. Thanks!

[night-slayer18]

hi @dong-frank i have merged your changes, also i will be doing some more additions for the dynamic site switching which can be done by the CLI/TUI so i was thinking of prompting them that switching will invalidate session and will require logging in again. I will require your help with a final overall testing as i cant access the leetcode.cn site so will require some effort from your end. Will update once i am done

[dong-frank]

Yes, I am glad to help that.

[night-slayer18]

@dong-frank please checkout the dev branch and check if everything is working fine. Thanks!

[dong-frank]

Test Report For leetcode.cn Support

TUI

login: ✅

Problem List: The problem list can be displayed successfully, but there seem to be some minor issues with Acc%.

Daily Chanllenge: ✅

Random Problem: ❌ It seems the same problem about GraphQL schema differs

Bookmarks: ❌ There seem to be some issues. I tried using this feature on LeetCode.com, but there are still no bookmarks at all, which probably means I don’t know how to use this feature yet lol.

Statistics: ✅

CLI

I haven’t tested the CLI yet, but I think it might have some minor issues, similar to the TUI.

[night-slayer18]

The bookmark you need to bookmark it from the problem view screen after selecting a problem inside the listing screen.

as for the random problem need to find the exact query for leetcode.cn, will check on that