From 70c8eade7c8708dd562d34e1efff364121db6736 Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.dev>
Date: Tue, 9 Jul 2024 19:54:45 +0100
Subject: [PATCH] cssls: exclude `@tailwind` and `@apply` at rule

...diagnostic errors
---
 lua/opdavies/lsp/handlers.lua | 33 +++++++++++++++++++++++++++++++++
 lua/opdavies/lsp/init.lua     | 16 +++++++++++++++-
 2 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/lua/opdavies/lsp/handlers.lua b/lua/opdavies/lsp/handlers.lua
index 0fd582c..5c0c235 100644
--- a/lua/opdavies/lsp/handlers.lua
+++ b/lua/opdavies/lsp/handlers.lua
@@ -1,5 +1,15 @@
 local M = {}
 
+local function should_remove_diagnostic(messages_to_filter, message)
+  for _, filter_message in ipairs(messages_to_filter) do
+    if message:match(filter_message) then
+      return true
+    end
+  end
+
+  return false
+end
+
 M.definition = function()
   local params = vim.lsp.util.make_position_params()
 
@@ -32,4 +42,27 @@ M.definition = function()
   end)
 end
 
+M.on_publish_diagnostics = function(_, result, ctx, config)
+  local client = vim.lsp.get_client_by_id(ctx.client_id)
+
+  if client.name == "cssls" then
+    local filtered_diagnostics = {}
+
+    local messages_to_filter = {
+      "Unknown at rule @apply",
+      "Unknown at rule @tailwind",
+    }
+
+    for _, diagnostic in ipairs(result.diagnostics) do
+      if not should_remove_diagnostic(messages_to_filter, diagnostic.message) then
+        table.insert(filtered_diagnostics, diagnostic)
+      end
+    end
+
+    result.diagnostics = filtered_diagnostics
+  end
+
+  vim.lsp.diagnostic.on_publish_diagnostics(_, result, ctx, config)
+end
+
 return M
diff --git a/lua/opdavies/lsp/init.lua b/lua/opdavies/lsp/init.lua
index 0c67994..6ae90f7 100644
--- a/lua/opdavies/lsp/init.lua
+++ b/lua/opdavies/lsp/init.lua
@@ -1,16 +1,26 @@
 local lspconfig = require "lspconfig"
 local nvim_status = require "lsp-status"
 
+local handlers = require "opdavies.lsp.handlers"
+
 require("neodev").setup {}
 
 local servers = {
   bashls = true,
-  cssls = true,
+
+  cssls = {
+    on_attach = function(client, bufnr)
+      vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(handlers.on_publish_diagnostics, {})
+    end,
+  },
+
   gopls = true,
   html = true,
+
   intelephense = {
     filetypes = { "php", "module", "test", "inc" },
   },
+
   lua_ls = {
     settings = {
       Lua = {
@@ -36,8 +46,10 @@ local servers = {
       },
     },
   },
+
   marksman = true,
   nil_ls = true,
+
   tailwindcss = {
     filetypes = { "html", "javascript", "twig", "typescript", "vue" },
 
@@ -49,9 +61,11 @@ local servers = {
       },
     },
   },
+
   terraformls = true,
   tsserver = true,
   vuels = true,
+
   yamlls = {
     settings = {
       yaml = {