From 8dde6a3f09acaca95fd08fb2d324484fdae6717e Mon Sep 17 00:00:00 2001
From: Matt Leong <mattleong91@gmail.com>
Date: Fri, 29 Oct 2021 13:02:18 -0700
Subject: [PATCH] feat(config): add ability to add custom lsp server options

---
 lua/cosmic/config/config.lua      | 10 +++++++++-
 lua/cosmic/lsp/providers/init.lua | 12 +++++++++---
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/lua/cosmic/config/config.lua b/lua/cosmic/config/config.lua
index 00bb2a2..4457f23 100644
--- a/lua/cosmic/config/config.lua
+++ b/lua/cosmic/config/config.lua
@@ -35,12 +35,20 @@ config.lsp = {
     -- enable/disable server + formatting
     eslint = false,
 
-    -- enable non-default servers (todo: support for custom server configs)
+    -- enable non-default servers, use default lsp config
+    -- check here for configs that will be used: https://github.com/williamboman/nvim-lsp-installer/tree/main/lua/nvim-lsp-installer/servers
     rust_analyzer = true,
 
     tsserver = {
       -- disable formatting
       format = false,
+      -- OR add/override server options
+      opts = {
+        on_attach = function(client, bufnr) end,
+        flags = {
+          debounce_text_changes = 150,
+        }
+      }
     },
 
     efm = {
diff --git a/lua/cosmic/lsp/providers/init.lua b/lua/cosmic/lsp/providers/init.lua
index 6dfd92c..68f288b 100644
--- a/lua/cosmic/lsp/providers/init.lua
+++ b/lua/cosmic/lsp/providers/init.lua
@@ -51,17 +51,16 @@ for _, requested_server in pairs(requested_servers) do
   end
 end
 
--- print(vim.inspect(requested_servers))
--- print(vim.inspect(disabled_servers))
-
 lsp_installer.on_server_ready(function(server)
   local opts = default_config
 
+  -- disable server if config disabled server list says so
   opts.autostart = true
   if vim.tbl_contains(disabled_servers, server.name) then
     opts.autostart = false
   end
 
+  -- set up default cosmic options
   if server.name == 'tsserver' then
     opts = vim.tbl_deep_extend('force', opts, require('cosmic.lsp.providers.tsserver'))
   elseif server.name == 'efm' then
@@ -72,6 +71,13 @@ lsp_installer.on_server_ready(function(server)
     opts = vim.tbl_deep_extend('force', opts, require('cosmic.lsp.providers.eslint'))
   end
 
+  -- override options if user definds them
+  if config.lsp.servers[server.name] then
+    if config.lsp.servers[server.name].opts ~= nil then
+      opts = config.lsp.servers[server.name].opts
+    end
+  end
+
   -- This setup() function is exactly the same as lspconfig's setup function (:help lspconfig-quickstart)
   server:setup(opts)
   vim.cmd([[ do User LspAttachBuffers ]])