feat(lsp): add golang autocmd on save

Auto organize imports and format on save.

lua/plugins/lsp/config.lua

@@ -13,6 +13,38 @@ lspconfig.lua_ls.setup({
 	},
 })
 
+lspconfig.gopls.setup({
+    on_attach = function(_, bufnr)
+		-- autcmd format on save
+        vim.api.nvim_create_autocmd("BufWritePre", {
+            buffer = bufnr,
+            callback = function()
+                vim.lsp.buf.format()
+            end,
+        })
+
+        -- autocmd Organize Imports on save
+        vim.api.nvim_create_autocmd("BufWritePre", {
+            buffer = bufnr,
+            callback = function()
+                local params = vim.lsp.util.make_range_params()
+                params.context = {only = {"source.organizeImports"}}
+                local result = vim.lsp.buf_request_sync(bufnr, "textDocument/codeAction", params, 1000)
+                for _, res in pairs(result or {}) do
+                    for _, r in pairs(res.result or {}) do
+                        if r.edit then
+                            vim.lsp.util.apply_workspace_edit(r.edit, "utf-8")
+                        else
+                            vim.lsp.buf.execute_command(r.command)
+                        end
+                    end
+                end
+            end,
+        })
+    end,
+})
+
+
 lspconfig.eslint.setup({
 	on_attach = function(_, bufnr)
 		vim.api.nvim_create_autocmd("BufWritePre", {