nvim-config/lua/core/autocmd.lua

local autocmd = vim.api.nvim_create_autocmd
local cmd = vim.cmd

local function get_path(str, sep)
  sep = sep or '/'
  return str:match("(.*" .. sep .. ")")
end

local function file_exists(name)
  local f = io.open(name, "r")
  if f ~= nil then
    io.close(f)
    return true
  else
    return false
  end
end

autocmd(
  'VimEnter',
  {
    pattern = '*',
    callback = function(ev)
      local opened = ev.file
      local folder_opened = string.find(opened, 'NERD_tree')
      if folder_opened then
        local folder = get_path(opened)
        local exist = file_exists(folder .. '.env.lua')
        if exist then
          cmd('source ' .. folder .. '.env.lua')
        end
      end
    end,
  }
)

autocmd(
  'BufWritePre',
  {
    pattern = '*',
    command = ':%s/\\s\\+$//e'
  }
)

-- local function reload_plugins()
-- cmd':Reload'
-- cmd':Restart'
-- cmd':PackerCompile'
-- cmd':PackerSync'
-- end

-- autocmd(
--     'BufWritePost',
--     {
--         pattern = '*/plugins.lua',
--         callback = reload_plugins,
--     }
-- )