Refactor Preprocessing

lua/fittencode/actions/identify_programming_language.lua

@@ -7,12 +7,12 @@ local Log = require('fittencode.log')
 
 local M = {}
 
-local DEFER = 1000
+local DEFER = 2000
 
 -- milliseconds
-local IPL_DEBOUNCE_TIME = 500
+local IPL_DEBOUNCE_TIME = 1000
 
----@type uv_timer_t
+---@type uv_timer_t?
 local ipl_timer = nil
 
 local function _identify_current_buffer()
@@ -46,19 +46,26 @@ local function _identify_current_buffer()
   API.identify_programming_language({
     headless = true,
     content = content,
+    preprocess_format = {
+      condense_blank_line = {
+        convert_whitespace_to_blank = true,
+      },
+      trim_trailing_whitespace = true,
+      filter = {
+        count = 1,
+        exclude_markdown_code_blocks_marker = true,
+        remove_blank_lines = true,
+      }
+    },
     on_success = function(suggestions)
       if not suggestions or #suggestions == 0 then
         return
       end
       local lang = suggestions[1]
-      if #lang == 0 then
+      if #lang > 10 then
         return
       end
       lang = lang:lower()
-      lang = lang:gsub('^%s*(.-)%s*$', '%1')
-      if #lang == 0 then
-        return
-      end
       lang = lang:gsub('c%+%+', 'cpp')
       lang = lang:match('^(%w+)')
       api.nvim_set_option_value('filetype', lang, {
@@ -70,7 +77,7 @@ local function _identify_current_buffer()
 end
 
 local function _ipl_wrap()
-  Base.debounce(ipl_timer, function()
+  ipl_timer = Base.debounce(ipl_timer, function()
     _identify_current_buffer()
   end, IPL_DEBOUNCE_TIME)
 end
@@ -79,7 +86,7 @@ local function register_identify_current_buffer()
   api.nvim_create_autocmd({ 'TextChangedI', 'BufReadPost' }, {
     group = Base.augroup('Actions', 'IdentifyProgrammingLanguage'),
     pattern = '*',
-    callback = function(params)
+    callback = function()
       if not API.ready_for_generate() then
         vim.defer_fn(function()
           _ipl_wrap()

lua/fittencode/base.lua

@@ -73,22 +73,18 @@ function M.get_cursor(window)
 end
 
 -- Debounce a function call.
--- * If a timer is already running, reset it.
--- * If a timer is not running, start a new timer with the given `wait` time.
--- * When the timer expires, call the `callback` function.
--- * If an error occurs, call `on_error` with the error message.
----@param timer uv_timer_t|nil
+---@param timer? uv_timer_t
 ---@param callback function
 ---@param wait integer
----@param on_error function|nil
+---@param on_error? function
 function M.debounce(timer, callback, wait, on_error)
   if type(wait) ~= 'number' or wait < 0 then
     return
   elseif wait == 0 then
     callback()
     return
   end
-  local function destroy_timer()
+  local _destroy_timer = function()
     if timer then
       if timer:has_ref() then
         timer:stop()
@@ -99,7 +95,7 @@ function M.debounce(timer, callback, wait, on_error)
       timer = nil
     end
   end
-  if not timer then
+  local _create_timer = function()
     timer = uv.new_timer()
     if timer == nil then
       if on_error then
@@ -111,13 +107,18 @@ function M.debounce(timer, callback, wait, on_error)
       wait,
       0,
       vim.schedule_wrap(function()
-        destroy_timer()
+        _destroy_timer()
         callback()
       end)
     )
+  end
+  if not timer then
+    _create_timer()
   else
-    timer:again()
+    _destroy_timer()
+    _create_timer()
   end
+  return timer
 end
 
 local function sysname()

lua/fittencode/commands.lua

@@ -174,7 +174,7 @@ function M.setup()
       table.remove(actions, 1)
       return cmd(unpack(actions))
     end
-    Log.debug('Invalid command fargs: {}', line.fargs)
+    -- Log.debug('Invalid command fargs: {}', line.fargs)
   end, {
     complete = function(_, line)
       local args = vim.split(vim.trim(line), '%s+')