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feat: add :CP login command for explicit credential management

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Problem: credentials were only set implicitly on first :CP submit.
There was no way to update wrong credentials, log out, or set
credentials ahead of time without editing the cache JSON manually.

Solution: add :CP login [platform] which always prompts for username
and password and overwrites any saved credentials for that platform.
Omitting the platform falls back to the active platform. Wire the
command through constants, parse_command, handle_command, and add
tab-completion (suggests platform names). Document in vimdoc under
the SUBMIT section and in the commands reference.
This commit is contained in:
Barrett Ruth 2026-03-03 16:26:48 -05:00 • committed by Barrett Ruth
parent a08d1f0c5e
commit 3e0b7beabf
5 changed files with 66 additions and 4 deletions
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27
doc/cp.nvim.txt
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@ -433,10 +433,20 @@ COMMANDS *cp-commands*
Cancel an active race countdown.
Submit Commands ~
:CP login [platform]
Set or update stored credentials for a platform.
Always prompts for username and password,
overwriting any previously saved credentials.
If [platform] is omitted, uses the active platform.
Examples: >
:CP login atcoder
:CP login codeforces
<
:CP submit [--lang {language}]
Submit the current solution to the online
judge. Prompts for credentials on first use
and stores them for subsequent submissions.
judge. Uses stored credentials (set via
:CP login). Prompts on first use if no
credentials are saved.
--lang: Submit solution for a specific language.
State Restoration ~
@ -947,9 +957,18 @@ SUBMIT *cp-submit*
Submit the current solution to the online judge.
:CP login [platform] *cp-login*
Set or update stored credentials for a platform. Always prompts for
username and password, overwriting any previously saved credentials.
Omit [platform] to use the currently active platform.
Credentials are stored in the main cache file under _credentials.
Use this command before submitting for the first time, or any time
you need to update stored credentials.
:CP submit [--lang {language}]
Submit the current solution. Prompts for credentials on first use
and stores them for subsequent submissions.
Submit the current solution. Uses stored credentials (set via
:CP login). Prompts on first use if no credentials are saved.
--lang: Override the language to submit.
Platform support: