local M = {}

function M.root(root)
  local f = debug.getinfo(1, 'S').source:sub(2)
  return vim.fn.fnamemodify(f, ':p:h:h') .. '/' .. (root or '')
end

---@param plugin string
function M.load(plugin)
  local name = plugin:match '.*/(.*)'
  local package_root = M.root '.tests/site/pack/deps/start/'
  if not vim.loop.fs_stat(package_root .. name) then
    print('Installing ' .. plugin)
    vim.fn.mkdir(package_root, 'p')
    vim.fn.system {
      'git',
      'clone',
      '--depth=1',
      'https://github.com/' .. plugin .. '.git',
      package_root .. '/' .. name,
    }
  end
end

function M.setup()
  vim.cmd [[set runtimepath=$VIMRUNTIME]]
  vim.opt.runtimepath:append(M.root())
  vim.opt.packpath = { M.root '.tests/site' }
  M.load 'nvim-lua/plenary.nvim'
  vim.env.XDG_CONFIG_HOME = M.root '.tests/config'
  vim.env.XDG_DATA_HOME = M.root '.tests/data'
  vim.env.XDG_STATE_HOME = M.root '.tests/state'
  vim.env.XDG_CACHE_HOME = M.root '.tests/cache'
end

M.setup()