helper.lua

local function t(s)
  return vim.api.nvim_replace_termcodes(s, true, true, true)
end

local function feedkey(key)
  vim.api.nvim_feedkeys(t('a' .. key), 'x', false)
end

local function join_paths(...)
  local result = table.concat({ ... }, '/')
  return result
end

local function test_dir()
  local data_path = vim.fn.stdpath('data')
  local package_root = join_paths(data_path, 'test')
  return os.getenv('SAGATEST') or package_root
end

local function treesitter_dep()
  local package_root = test_dir()
  local treesitter_path = join_paths(package_root, 'nvim-treesitter')
  vim.opt.runtimepath:append(treesitter_path)
  if vim.fn.isdirectory(treesitter_path) ~= 1 then
    vim.fn.system({
      'git',
      'clone',
      'https://github.com/nvim-treesitter/nvim-treesitter',
      treesitter_path,
    })
  end
  local parser_dir = join_paths(treesitter_path, 'parser')
  require('nvim-treesitter').setup({
    ensure_installed = { 'rust' },
    sync_install = true,
    highlight = { enable = true },
    parser_install_dir = parser_dir,
  })
  if vim.fn.filereadable(join_paths(parser_dir, 'lua.so')) == 0 then
    vim.cmd('TSInstallSync rust')
  end
end

local function lspconfig_dep()
  local package_root = test_dir()
  local lspconfig_path = join_paths(package_root, 'nvim-lspconfig')
  vim.opt.runtimepath:append(lspconfig_path)
  if vim.fn.isdirectory(lspconfig_path) ~= 1 then
    vim.fn.system({
      'git',
      'clone',
      'https://github.com/neovim/nvim-lspconfig',
      lspconfig_path,
    })
  end
  local lspconfig = require('lspconfig')
  lspconfig.lua_ls.setup({})
end

local function extract_winbar_value(input, arg)
  local pattern = '%%#' .. arg .. '#([^%%#]+)'
  local winbar_value = string.match(input, pattern)
  return winbar_value or ''
end

return {
  test_dir = test_dir,
  feedkey = feedkey,
  treesitter_dep = treesitter_dep,
  lspconfig_dep = lspconfig_dep,
  join_paths = join_paths,
  extract_winbar_value = extract_winbar_value,
}