re-add per-lsp format on save config

lua/lsp/servers.lua

@@ -1,9 +1,15 @@
 return {
-  'rust_analyzer',
-  'erlangls',
-  'lua_ls',
-  'cssls',
-  'eslint',
-  'ts_ls',
-  'svelte',
+  rust_analyzer = true,
+  erlangls = true,
+  lua_ls = {
+    format_on_save = false,
+  },
+  cssls = {
+    format_on_save = false,
+  },
+  eslint = true,
+  ts_ls = {
+    format_on_save = false,
+  },
+  svelte = true,
 }

lua/lsp/servers/defaults.lua

@@ -2,6 +2,7 @@ local M = {}
 local augroup_name = 'CosmicNvimLspFormat'
 local config = require('config')
 local u = require('utils')
+local lsp_utils = require('utils.lsp')
 local lsp_mappings = require('lsp.mappings')
 
 M.augroup = vim.api.nvim_create_augroup(augroup_name, { clear = true })
@@ -31,10 +32,15 @@ function M.on_attach(client, bufnr)
     })
     vim.api.nvim_create_autocmd('BufWritePre', {
       callback = function()
+        if lsp_utils.format_on_save_enabled then
           vim.lsp.buf.format({
             timeout_ms = config.lsp.format_timeout,
             bufnr = bufnr,
+            filter = function(cl)
+              return lsp_utils.can_client_format_on_save(cl)
+            end,
           })
+        end
       end,
       buffer = bufnr,
       group = M.augroup,

lua/plugins/auto-session/init.lua

@@ -1,8 +1,8 @@
 local config = {
+  auto_restore = true,
+  auto_session = true,
+  enabled = true,
   pre_save_cmds = { 'cclose', 'lua vim.notify.dismiss()' },
-  auto_session_enabled = true,
-  auto_restore_enabled = true,
-  auto_save_enabled = true,
 }
 
 return {

lua/plugins/null-ls.lua

@@ -13,7 +13,6 @@ return {
     local config_opts = {
       sources = {
         null_ls.builtins.code_actions.gitsigns,
-        null_ls.builtins.diagnostics.markdownlint,
         null_ls.builtins.formatting.prettierd.with({
           env = {
             PRETTIERD_LOCAL_PRETTIER_ONLY = 1,
@@ -21,7 +20,7 @@ return {
           extra_filetypes = { 'astro' },
         }),
         null_ls.builtins.formatting.stylua,
-      }
+      },
     }
 
     null_ls.setup(u.merge(defaults, config_opts))

lua/plugins/nvim-lspconfig.lua

@@ -18,7 +18,7 @@ return {
       lspconfig[server].setup(server_config)
     end
 
-    for _, server in pairs(require('lsp.servers')) do
+    for server, _ in pairs(require('lsp.servers')) do
       start_server(server)
     end
   end,

lua/utils/lsp.lua

@@ -1,4 +1,5 @@
 local config = require('config')
+local servers = require('lsp.servers')
 local M = {}
 
 M.format_on_save_enabled = true
@@ -8,6 +9,24 @@ function M.toggle_format_on_save()
   vim.notify(string.format('Format on save: %s', M.format_on_save_enabled))
 end
 
+function M.can_client_format_on_save(client)
+  local server_config = servers[client.name]
+
+  if server_config == true then
+    return true
+  end
+
+  if server_config then
+    if server_config.format_on_save == nil then
+      return true
+    end
+
+    return server_config.format_on_save == true
+  end
+
+  return true
+end
+
 function M.buf_format(bufnr, timeout)
   if timeout == '' or timeout == nil then
     timeout = config.lsp.format_timeout