fix: improve error handling

lua/cp/commands/cache.lua

@@ -43,18 +43,12 @@ function M.handle_cache_command(cmd)
       if vim.tbl_contains(platforms, cmd.platform) then
         cache.clear_platform(cmd.platform)
         logger.log(
-          ('Cache cleared for platform %s'):format(cmd.platform),
+          ("Cache cleared for platform '%s'"):format(constants.PLATFORM_DISPLAY_NAMES[cmd.platform]),
           vim.log.levels.INFO,
           true
         )
       else
-        logger.log(
-          ("Unknown platform: '%s'. Available: %s"):format(
-            cmd.platform,
-            table.concat(platforms, ', ')
-          ),
-          vim.log.levels.ERROR
-        )
+        logger.log(("Unknown platform '%s'."):format(cmd.platform), vim.log.levels.ERROR)
       end
     else
       cache.clear_all()

lua/cp/commands/init.lua

@@ -136,7 +136,11 @@ function M.handle_command(opts)
 
     if not (contest_data and contest_data.index_map and contest_data.index_map[problem_id]) then
       logger.log(
-        ("%s contest '%s' has no problem '%s'."):format(platform, contest_id, problem_id),
+        ("%s contest '%s' has no problem '%s'."):format(
+          constants.PLATFORM_DISPLAY_NAMES[platform],
+          contest_id,
+          problem_id
+        ),
         vim.log.levels.ERROR
       )
       return

lua/cp/pickers/fzf_lua.lua

@@ -4,13 +4,13 @@ local M = {}
 
 local function contest_picker(platform, refresh)
   local constants = require('cp.constants')
-  local platform_display_name = constants.PLATFORM_DISPLAY_NAMES[platform] or platform
+  local platform_display_name = constants.PLATFORM_DISPLAY_NAMES[platform]
   local fzf = require('fzf-lua')
   local contests = picker_utils.get_platform_contests(platform, refresh)
 
   if vim.tbl_isempty(contests) then
     vim.notify(
-      ('No contests found for platform: %s'):format(platform_display_name),
+      ("No contests found for platform '%s'"):format(platform_display_name),
       vim.log.levels.WARN
     )
     return

lua/cp/scraper.lua

@@ -1,4 +1,6 @@
 local M = {}
+
+local constants = require('cp.log')
 local logger = require('cp.log')
 local utils = require('cp.utils')
 
@@ -113,7 +115,10 @@ function M.scrape_contest_metadata(platform, contest_id, callback)
     on_exit = function(result)
       if not result or not result.success then
         logger.log(
-          ("Failed to scrape metadata for %s contest '%s'."):format(platform, contest_id),
+          ("Failed to scrape metadata for %s contest '%s'."):format(
+            constants.PLATFORM_DISPLAY_NAMES[platform],
+            contest_id
+          ),
           vim.log.levels.ERROR
         )
         return
@@ -121,7 +126,10 @@ function M.scrape_contest_metadata(platform, contest_id, callback)
       local data = result.data or {}
       if not data.problems or #data.problems == 0 then
         logger.log(
-          ("No problems returned for %s contest '%s'."):format(platform, contest_id),
+          ("No problems returned for %s contest '%s'."):format(
+            constants.PLATFORM_DISPLAY_NAMES[platform],
+            contest_id
+          ),
           vim.log.levels.ERROR
         )
         return

lua/cp/setup.lua

@@ -11,10 +11,7 @@ local platforms = constants.PLATFORMS
 
 function M.set_platform(platform)
   if not vim.tbl_contains(platforms, platform) then
-    logger.log(
-      ('unknown platform: %s. supported: %s'):format(platform, table.concat(platforms, ', ')),
-      vim.log.levels.ERROR
-    )
+    logger.log(("Unknown platform '%s'"):format(platform), vim.log.levels.ERROR)
     return false
   end
   state.set_platform(platform)

lua/cp/ui/panel.lua

@@ -4,6 +4,7 @@ local M = {}
 ---@field debug? boolean
 
 local config_module = require('cp.config')
+local constants = require('cp.constants')
 local layouts = require('cp.ui.layouts')
 local logger = require('cp.log')
 local state = require('cp.state')
@@ -58,7 +59,10 @@ function M.toggle_interactive(interactor_cmd)
   end
   if not contest_id then
     logger.log(
-      ('No contest %s configured for platform %s.'):format(contest_id, platform),
+      ("No contest %s configured for platform '%s'."):format(
+        contest_id,
+        constants.PLATFORM_DISPLAY_NAMES[platform]
+      ),
       vim.log.levels.ERROR
     )
     return
@@ -107,7 +111,10 @@ function M.toggle_interactive(interactor_cmd)
       interactor = './' .. interactor
     end
     if vim.fn.executable(interactor) ~= 1 then
-      logger.log(('Interactor not executable: %s'):format(interactor_cmd), vim.log.levels.ERROR)
+      logger.log(
+        ("Interactor '%s' is not executable."):format(interactor_cmd),
+        vim.log.levels.ERROR
+      )
       if state.saved_interactive_session then
         vim.cmd(('source %s'):format(state.saved_interactive_session))
         vim.fn.delete(state.saved_interactive_session)
@@ -231,18 +238,15 @@ function M.toggle_run_panel(run_opts)
 
   if not contest_id then
     logger.log(
-      ('No contest %s configured for platform %s.'):format(contest_id, platform),
+      ("No contest '%s' configured for platform '%s'."):format(
+        contest_id,
+        constants.PLATFORM_DISPLAY_NAMES[platform]
+      ),
       vim.log.levels.ERROR
     )
     return
   end
 
-  local problem_id = state.get_problem_id()
-  if not problem_id then
-    logger.log(('No problem found for the current problem id %s'):format(problem_id))
-    return
-  end
-
   local cache = require('cp.cache')
   cache.load()
   local contest_data = cache.get_contest_data(platform, contest_id)