-- Some language servers are distributed only as npm packages, and Node on Arch
-- ships without npm. Without this guard you get two separate rounds of errors:
--
--   1. mason-lspconfig retries the install on every startup and fails, once per
--      server ("failed to install yamlls" ...).
--   2. LazyVim still enables the server, so opening any matching file fails with
--      "Spawning language server with cmd: { "yaml-language-server", ... } failed".
--
-- So each server below is disabled unless its binary can actually be found.
-- Nothing is hardcoded to this host: the check is a PATH lookup plus Mason's own
-- bin directory, so the moment the server exists it enables itself again.
--
-- To get them: sudo pacman -S npm
--              nvim +"MasonInstall yaml-language-server dockerfile-language-server" +qa

-- LazyVim server name -> the executable Mason/npm installs for it.
local npm_servers = {
  yamlls = "yaml-language-server",
  dockerls = "docker-langserver",
  docker_compose_language_service = "docker-compose-langserver",
}

local mason_bin = vim.fs.joinpath(vim.fn.stdpath("data"), "mason", "bin")

---@param bin string
---@return boolean
local function available(bin)
  if vim.fn.executable(bin) == 1 then
    return true
  end
  -- Mason prepends its bin dir to PATH only after setup, so look there directly.
  return vim.uv.fs_stat(vim.fs.joinpath(mason_bin, bin)) ~= nil
end

local missing = {}
for server, bin in pairs(npm_servers) do
  if not available(bin) then
    missing[#missing + 1] = server
  end
end

if #missing == 0 then
  return {}
end

return {
  {
    "neovim/nvim-lspconfig",
    opts = function(_, opts)
      opts.servers = opts.servers or {}
      for _, server in ipairs(missing) do
        opts.servers[server] = vim.tbl_deep_extend("force", opts.servers[server] or {}, {
          enabled = false, -- do not try to spawn a binary that is not there
          mason = false, -- and do not retry the impossible install every startup
        })
      end
      return opts
    end,
  },
}