add some bugs

lua/custom/utils.lua

@@ -66,4 +66,60 @@ end
 
 return {
   pick_executable = pick_executable,
+  clangd_base_cmd = {
+    'clangd',
+    '--background-index',
+    '--clang-tidy',
+    '--header-insertion=never',
+    '--query-driver=' .. vim.fn.trim(vim.fn.system 'which clang++'),
+    '--resource-dir=' .. vim.fn.trim(vim.fn.system 'clang++ --print-resource-dir'),
+  },
+
+  make_clangd_cmd = function(self, compile_commands_dir)
+    local cmd = vim.deepcopy(self.clangd_base_cmd)
+    table.insert(cmd, '--compile-commands-dir=' .. compile_commands_dir)
+    return cmd
+  end,
+
+  find_targets = function()
+    return vim.fn.systemlist 'fd -u compile_commands.json -x dirname {}'
+  end,
+
+  get_target = function(self)
+    return vim.g.current_target_dir or 'build/debug'
+  end,
+
+  set_target = function(self, dir)
+    vim.g.current_target_dir = dir
+    self:reload_clangd()
+  end,
+
+  pick_target = function(self)
+    local targets = self.find_targets()
+    if vim.tbl_isempty(targets) then
+      vim.notify('No build targets found.', vim.log.WARN)
+      return
+    end
+    vim.ui.select(targets, { prompt = 'Select build target:' }, function(choice)
+      if choice then
+        self:set_target(choice)
+      end
+    end)
+  end,
+
+  reload_clangd = function(self)
+    local lspconfig = require 'lspconfig'
+    local clients = vim.lsp.get_active_clients { name = 'clangd' }
+
+    for _, cliet in ipairs(clients) do
+      client.stop()
+    end
+
+    vim.defer_fn(function()
+      lspconfig.clangd.setup {
+        cmd = self:make_clangd_cmd(self:get_target()),
+      }
+      vim.cmd 'edit'
+    end, 200)
+  end,
 }