---@brief
---
--- https://github.com/sveltejs/language-tools/tree/master/packages/language-server
---
--- Note: assuming that [ts_ls](#ts_ls) is setup, full JavaScript/TypeScript support (find references, rename, etc of symbols in Svelte files when working in JS/TS files) requires per-project installation and configuration of [typescript-svelte-plugin](https://github.com/sveltejs/language-tools/tree/master/packages/typescript-plugin#usage).
---
--- `svelte-language-server` can be installed via `npm`:
--- ```sh
--- npm install [-g] svelte-language-server
--- ```

---@type vim.lsp.Config
return {
  cmd = function(dispatchers, config)
    local cmd = 'svelteserver'
    if (config or {}).root_dir then
      local local_cmd = vim.fs.joinpath(config.root_dir, 'node_modules/.bin', cmd)
      if vim.fn.executable(local_cmd) == 1 then
        cmd = local_cmd
      end
    end
    return vim.lsp.rpc.start({ cmd, '--stdio' }, dispatchers)
  end,
  filetypes = { 'svelte' },
  settings = {
    typescript = {
      inlayHints = {
        parameterNames = {
          enabled = 'literals',
          suppressWhenArgumentMatchesName = true,
        },
        parameterTypes = { enabled = true },
        variableTypes = { enabled = true },
        propertyDeclarationTypes = { enabled = true },
        functionLikeReturnTypes = { enabled = true },
        enumMemberValues = { enabled = true },
      },
    },
  },
  root_dir = function(bufnr, on_dir)
    local fname = vim.api.nvim_buf_get_name(bufnr)
    -- Svelte LSP only supports file:// schema. https://github.com/sveltejs/language-tools/issues/2777
    if vim.uv.fs_stat(fname) ~= nil then
      local root_markers = { 'package-lock.json', 'yarn.lock', 'pnpm-lock.yaml', 'bun.lockb', 'bun.lock', 'deno.lock' }
      root_markers = vim.fn.has('nvim-0.11.3') == 1 and { root_markers, { '.git' } }
        or vim.list_extend(root_markers, { '.git' })
      -- We fallback to the current working directory if no project root is found
      local project_root = vim.fs.root(bufnr, root_markers) or vim.fn.getcwd()
      on_dir(project_root)
    end
  end,
  on_attach = function(client, bufnr)
    -- Workaround to trigger reloading JS/TS files
    -- See https://github.com/sveltejs/language-tools/issues/2008
    vim.api.nvim_create_autocmd('BufWritePost', {
      pattern = { '*.js', '*.ts' },
      group = vim.api.nvim_create_augroup('lspconfig.svelte', {}),
      callback = function(ctx)
        -- internal API to sync changes that have not yet been saved to the file system
        ---@diagnostic disable-next-line: param-type-mismatch
        client:notify('$/onDidChangeTsOrJsFile', { uri = ctx.match })
      end,
    })
    vim.api.nvim_buf_create_user_command(bufnr, 'LspMigrateToSvelte5', function()
      client:exec_cmd({
        title = 'Migrate Component to Svelte 5 Syntax',
        command = 'migrate_to_svelte_5',
        arguments = { vim.uri_from_bufnr(bufnr) },
      })
    end, { desc = 'Migrate Component to Svelte 5 Syntax' })
  end,
}
