local ensure_packer = function()
  local fn = vim.fn
  local install_path = fn.stdpath('data')..'/site/pack/packer/start/packer.nvim'
  if fn.empty(fn.glob(install_path)) > 0 then
    fn.system({'git', 'clone', '--depth', '1', 'https://git.voronind.com/mirror/packer.nvim.git', install_path})
    vim.cmd [[packadd packer.nvim]]
    return true
  end
  return false
end

local packer_bootstrap = ensure_packer()

local available = function(commands)
  for _, command in ipairs(commands) do
    if vim.fn.executable(command) ~= 1 then
      return false
    end
  end
  return true
end

return require('packer').startup(function(use)
  --[[ 
    host requirements
      - gcc-c++
  ]]--

  use 'https://git.voronind.com/mirror/packer.nvim.git'
  use 'https://git.voronind.com/mirror/nvim-web-devicons.git'
  use 'https://git.voronind.com/mirror/nvim-tree.lua.git'
  use 'https://git.voronind.com/mirror/nvim-lspconfig.git'
  use 'https://git.voronind.com/mirror/which-key.nvim.git'
  use 'https://git.voronind.com/mirror/bufferline.nvim.git'
  -- use 'https://git.voronind.com/mirror/Comment.nvim.git' -- TODO: remove mirror before deleting.
  use 'https://git.voronind.com/mirror/SingleComment.nvim.git'
  use 'https://git.voronind.com/mirror/lualine.nvim.git'
  use 'https://git.voronind.com/mirror/autoclose.nvim.git'
  use 'https://git.voronind.com/mirror/winshift.nvim.git'
  use 'https://git.voronind.com/mirror/mason.nvim.git'
  use 'https://git.voronind.com/mirror/mason-lspconfig.nvim.git'
  use 'https://git.voronind.com/mirror/gitsigns.nvim.git'
  -- use 'https://git.voronind.com/mirror/nvim-scrollbar.git' -- TODO: remove mirror before deleting.
  use 'https://git.voronind.com/mirror/trouble.nvim.git'
  use 'https://git.voronind.com/mirror/tokyonight.nvim.git'
  use 'https://git.voronind.com/mirror/close-buffers.nvim.git'
  use 'https://git.voronind.com/mirror/plenary.nvim.git'
  use 'https://git.voronind.com/mirror/telescope.nvim.git'
  use 'https://git.voronind.com/mirror/nvim-treesitter.git'
  use 'https://git.voronind.com/mirror/todo-comments.nvim.git'
  use 'https://git.voronind.com/mirror/align.nvim.git'
  use 'https://git.voronind.com/mirror/gruvbox-material.git'

  -- Automatically set up your configuration after cloning packer.nvim
  -- Put this at the end after all plugins
  if packer_bootstrap then
    require('packer').sync()
  end

  -- plugin toggles.
  local treesitter = true

  -- plugin setup.
  require('plugin/mason')
  require('plugin/lsp/init')
  require('plugin/filetree')
  require('plugin/bufferline')
  require('plugin/lualine')
  require('plugin/autoclose')
  require('plugin/winshift')
  require('plugin/gitsigns')
  -- require('plugin/scrollbar') -- TODO: remove mirror before deleting.
  require('plugin/trouble')
  require('plugin/tokyonight')
  require('plugin/gruvbox')
  require('plugin/closebuffers')
  require('plugin/telescope')
  require('plugin/todo')

  if available({'g++'}) then
    if treesitter then
      require('plugin/treesitter')
      require('plugin/fold')
    end
  end
end)