fix: only display configured platforms in pickers

lua/cp/pickers/init.lua

@@ -1,6 +1,7 @@
 local M = {}
 
 local cache = require('cp.cache')
+local config = require('cp.config').get_config()
 local logger = require('cp.log')
 local utils = require('cp.utils')
 
@@ -18,26 +19,28 @@ local utils = require('cp.utils')
 ---@field name string Problem name (e.g. "Two Permutations", "Painting Walls")
 ---@field display_name string Formatted display name for picker
 
----Get list of available competitive programming platforms
 ---@return cp.PlatformItem[]
 local function get_platforms()
   local constants = require('cp.constants')
-  return vim.tbl_map(function(platform)
-    return {
-      id = platform,
-      display_name = constants.PLATFORM_DISPLAY_NAMES[platform] or platform,
-    }
-  end, constants.PLATFORMS)
+  local result = {}
+
+  for _, platform in ipairs(constants.PLATFORMS) do
+    if config.contests[platform] then
+      table.insert(result, {
+        id = platform,
+        display_name = constants.PLATFORM_DISPLAY_NAMES[platform] or platform,
+      })
+    end
+  end
+
+  return result
 end
 
 ---Get list of contests for a specific platform
 ---@param platform string Platform identifier (e.g. "codeforces", "atcoder")
 ---@return cp.ContestItem[]
 local function get_contests_for_platform(platform)
-  local constants = require('cp.constants')
-  local platform_display_name = constants.PLATFORM_DISPLAY_NAMES[platform] or platform
-
-  logger.log(('loading %s contests...'):format(platform_display_name), vim.log.levels.INFO, true)
+  logger.log('loading contests...', vim.log.levels.INFO, true)
 
   cache.load()
   local cached_contests = cache.get_contest_list(platform)
@@ -131,11 +134,7 @@ local function get_problems_for_contest(platform, contest_id)
     return problems
   end
 
-  logger.log(
-    ('loading %s %s problems...'):format(platform_display_name, contest_id),
-    vim.log.levels.INFO,
-    true
-  )
+  logger.log('loading contest problems...', vim.log.levels.INFO, true)
 
   if not utils.setup_python_env() then
     return problems

lua/cp/setup.lua

@@ -136,7 +136,7 @@ function M.setup_problem(contest_id, problem_id, language)
 
       local source_file = state.get_source_file(language)
       if not source_file then
-        error('Failed to generate source file path')
+        return
       end
       vim.cmd.e(source_file)
       local source_buf = vim.api.nvim_get_current_buf()

lua/cp/ui/panel.lua

@@ -9,10 +9,6 @@ local state = require('cp.state')
 local current_diff_layout = nil
 local current_mode = nil
 
-local function get_current_problem()
-  return state.get_problem_id()
-end
-
 function M.toggle_run_panel(is_debug)
   if state.is_run_panel_active() then
     if current_diff_layout then
@@ -39,7 +35,7 @@ function M.toggle_run_panel(is_debug)
     return
   end
 
-  local problem_id = get_current_problem()
+  local problem_id = state.get_problem_id()
   if not problem_id then
     return
   end
@@ -49,9 +45,9 @@ function M.toggle_run_panel(is_debug)
 
   logger.log(
     ('run panel: platform=%s, contest=%s, problem=%s'):format(
-      platform or 'nil',
-      contest_id or 'nil',
-      problem_id or 'nil'
+      tostring(platform),
+      tostring(contest_id),
+      tostring(problem_id)
     )
   )
 
@@ -124,12 +120,7 @@ function M.toggle_run_panel(is_debug)
       return
     end
 
-    test_state.current_index = test_state.current_index + delta
-    if test_state.current_index < 1 then
-      test_state.current_index = #test_state.test_cases
-    elseif test_state.current_index > #test_state.test_cases then
-      test_state.current_index = 1
-    end
+    test_state.current_index = (test_state.current_index + delta) % #test_state.test_cases
 
     refresh_run_panel()
   end