From b84e46bda1d9671b7b0589e42c522a6a5cd02397 Mon Sep 17 00:00:00 2001
From: Tomas Mirchev <contact@tomastm.com>
Date: Sat, 31 Jan 2026 05:30:42 +0200
Subject: [PATCH] add helm lsp

---
 init.lua                       |  6 +++
 lsp/helm_ls.lua                | 25 +++++++++++
 lsp/yamlls.lua                 | 80 ++++++++++++++++++++++++++++++++++
 lua/modules/language-specs.lua | 19 ++++++++
 4 files changed, 130 insertions(+)
 create mode 100644 lsp/helm_ls.lua
 create mode 100644 lsp/yamlls.lua

diff --git a/init.lua b/init.lua
index 6ca8ece..b12d6e1 100644
--- a/init.lua
+++ b/init.lua
@@ -5,6 +5,12 @@ end
 
 vim.env.PATH = vim.fn.stdpath('data') .. '/mason/bin:' .. vim.env.PATH
 
+vim.filetype.add({
+  pattern = {
+    ['.*/templates/.*%.ya?ml'] = 'yaml.helm-values',
+  },
+})
+
 require('core.options')
 require('core.keymaps')
 require('core.events')
diff --git a/lsp/helm_ls.lua b/lsp/helm_ls.lua
new file mode 100644
index 0000000..a2deb89
--- /dev/null
+++ b/lsp/helm_ls.lua
@@ -0,0 +1,25 @@
+---@brief
+---
+--- https://github.com/mrjosh/helm-ls
+---
+--- Helm Language server. (This LSP is in early development)
+---
+--- `helm Language server` can be installed by following the instructions [here](https://github.com/mrjosh/helm-ls).
+---
+--- The default `cmd` assumes that the `helm_ls` binary can be found in `$PATH`.
+---
+--- If need Helm file highlight use [vim-helm](https://github.com/towolf/vim-helm) plugin.
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'helm_ls', 'serve' },
+  filetypes = { 'helm', 'yaml.helm-values' },
+  root_markers = { 'Chart.yaml' },
+  capabilities = {
+    workspace = {
+      didChangeWatchedFiles = {
+        dynamicRegistration = true,
+      },
+    },
+  },
+}
diff --git a/lsp/yamlls.lua b/lsp/yamlls.lua
new file mode 100644
index 0000000..9a3b8c4
--- /dev/null
+++ b/lsp/yamlls.lua
@@ -0,0 +1,80 @@
+---@brief
+---
+--- https://github.com/redhat-developer/yaml-language-server
+---
+--- `yaml-language-server` can be installed via `yarn`:
+--- ```sh
+--- yarn global add yaml-language-server
+--- ```
+---
+--- To use a schema for validation, there are two options:
+---
+--- 1. Add a modeline to the file. A modeline is a comment of the form:
+---
+--- ```
+--- # yaml-language-server: $schema=<urlToTheSchema|relativeFilePath|absoluteFilePath}>
+--- ```
+---
+--- where the relative filepath is the path relative to the open yaml file, and the absolute filepath
+--- is the filepath relative to the filesystem root ('/' on unix systems)
+---
+--- 2. Associated a schema url, relative , or absolute (to root of project, not to filesystem root) path to
+--- the a glob pattern relative to the detected project root. Check `:checkhealth vim.lsp` to determine the resolved project
+--- root.
+---
+--- ```lua
+--- vim.lsp.config('yamlls', {
+---   ...
+---   settings = {
+---     yaml = {
+---       ... -- other settings. note this overrides the lspconfig defaults.
+---       schemas = {
+---         ["https://json.schemastore.org/github-workflow.json"] = "/.github/workflows/*",
+---         ["../path/relative/to/file.yml"] = "/.github/workflows/*",
+---         ["/path/from/root/of/project"] = "/.github/workflows/*",
+---       },
+---     },
+---   }
+--- })
+--- ```
+---
+--- Currently, kubernetes is special-cased in yammls, see the following upstream issues:
+--- * [#211](https://github.com/redhat-developer/yaml-language-server/issues/211).
+--- * [#307](https://github.com/redhat-developer/yaml-language-server/issues/307).
+---
+--- To override a schema to use a specific k8s schema version (for example, to use 1.18):
+---
+--- ```lua
+--- vim.lsp.config('yamlls', {
+---   ...
+---   settings = {
+---     yaml = {
+---       ... -- other settings. note this overrides the lspconfig defaults.
+---       schemas = {
+---         ["https://raw.githubusercontent.com/yannh/kubernetes-json-schema/refs/heads/master/v1.32.1-standalone-strict/all.json"] = "/*.k8s.yaml",
+---         ... -- other schemas
+---       },
+---     },
+---   }
+--- })
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'yaml-language-server', '--stdio' },
+  filetypes = { 'helm', 'yaml', 'yaml.docker-compose', 'yaml.gitlab', 'yaml.helm-values' },
+  root_markers = { '.git' },
+  settings = {
+    -- https://github.com/redhat-developer/vscode-redhat-telemetry#how-to-disable-telemetry-reporting
+    redhat = { telemetry = { enabled = false } },
+    -- formatting disabled by default in yaml-language-server; enable it
+    yaml = { format = { enable = true } },
+  },
+  on_init = function(client)
+    --- https://github.com/neovim/nvim-lspconfig/pull/4016
+    --- Since formatting is disabled by default if you check `client:supports_method('textDocument/formatting')`
+    --- during `LspAttach` it will return `false`. This hack sets the capability to `true` to facilitate
+    --- autocmd's which check this capability
+    client.server_capabilities.documentFormattingProvider = true
+  end,
+}
diff --git a/lua/modules/language-specs.lua b/lua/modules/language-specs.lua
index 54d2f14..1f312a1 100644
--- a/lua/modules/language-specs.lua
+++ b/lua/modules/language-specs.lua
@@ -1,7 +1,26 @@
 local M = {}
 
+-- vim.filetype.add({
+--   pattern = {
+--     ['.*/templates/.*%.ya?ml'] = 'yaml.helm-values',
+--     ['.*/templates/.*%.tpl'] = 'yaml.helm-values',
+--   },
+-- })
+
+-- vim.api.nvim_create_autocmd({ 'BufNewFile', 'BufRead' }, {
+--   pattern = '**/templates/**/*.y?ml',
+--   callback = function()
+--     vim.bo.filetype = 'yaml.helm-values'
+--   end,
+-- })
+--
 function M.get()
   return {
+    {
+      ft = 'yaml.helm-values',
+      ts = 'helm',
+      lsp = 'helm-ls',
+    },
     {
       ft = 'yaml',
       ts = 'yaml',