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feat: race countdown support and language version selection (#346)

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## Problem

Two gaps in the plugin: (1) contest pickers have no way to know whether
a contest supports countdown (race), so the UI can't surface that
affordance; (2) `:CP submit` hardcodes a single language ID per platform
with no way to choose C++ standard or override the platform ID.

## Solution

**Race countdown** (`4e709c8`): Add `supports_countdown` boolean to
`ContestListResult` and wire it through CSES/USACO scrapers, cache, race
module, and pickers.

**Language version selection** (`b90ac67`): Add `LANGUAGE_VERSIONS` and
`DEFAULT_VERSIONS` tables in `constants.lua`. Config gains `version` and
`submit_id` fields validated at setup time. `submit.lua` resolves the
effective config to a platform ID (priority: `submit_id` > `version` >
default). Helpdocs add `*cp-submit-language*` section. Tests cover
`LANGUAGE_IDS` completeness.
This commit is contained in:
Barrett Ruth 2026-03-06 18:18:21 -05:00 • committed by GitHub
parent 592f977296
commit 58b6840815
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13 changed files with 265 additions and 46 deletions
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22
plugin/cp.lua
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@ -109,6 +109,9 @@ end, {
end
return filter_candidates(candidates)
elseif args[2] == 'race' then
if require('cp.race').status().active then
return filter_candidates({ 'stop' })
end
local candidates = { 'stop' }
vim.list_extend(candidates, platforms)
return filter_candidates(candidates)
@ -126,7 +129,11 @@ end, {
if args[2] == 'stress' then
local utils = require('cp.utils')
return filter_candidates(utils.cwd_executables())
elseif args[2] == 'race' and vim.tbl_contains(platforms, args[3]) then
elseif
args[2] == 'race'
and not require('cp.race').status().active
and vim.tbl_contains(platforms, args[3])
then
local cache = require('cp.cache')
cache.load()
local contests = cache.get_cached_contest_ids(args[3])
@ -153,7 +160,11 @@ end, {
return filter_candidates(candidates)
end
elseif num_args == 5 then
if args[2] == 'race' and vim.tbl_contains(platforms, args[3]) then
if
args[2] == 'race'
and not require('cp.race').status().active
and vim.tbl_contains(platforms, args[3])
then
return filter_candidates({ '--lang' })
elseif args[2] == 'cache' and args[3] == 'clear' and vim.tbl_contains(platforms, args[4]) then
local cache = require('cp.cache')
@ -168,7 +179,12 @@ end, {
end
end
elseif num_args == 6 then
if args[2] == 'race' and vim.tbl_contains(platforms, args[3]) and args[5] == '--lang' then
if
args[2] == 'race'
and not require('cp.race').status().active
and vim.tbl_contains(platforms, args[3])
and args[5] == '--lang'
then
return filter_candidates(get_enabled_languages(args[3]))
elseif vim.tbl_contains(platforms, args[2]) and args[5] == '--lang' then
return filter_candidates(get_enabled_languages(args[2]))