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
    packer_bootstrap = fn.system({'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim', install_path})
    vim.cmd [[packadd packer.nvim]]
end

require('packer').startup(function(use)
    use 'https://github.com/wbthomason/packer.nvim'
    use 'https://github.com/owozsh/amora'
    -- file formats
    use {
        'https://github.com/nvim-orgmode/orgmode',
        config = function()
            require('orgmode').setup{}
        end
    }
    -- source code
    use 'https://github.com/tpope/vim-commentary'
    ---- lsp
    use {
        'https://github.com/nvim-treesitter/nvim-treesitter',
        run = function()
            require('nvim-treesitter.install').update({ with_sync = true })
        end
    }
    use 'https://github.com/neovim/nvim-lspconfig'
    ---- completion
    use 'https://github.com/L3MON4D3/LuaSnip'
    use 'https://github.com/hrsh7th/cmp-nvim-lsp'
    use 'https://github.com/hrsh7th/cmp-buffer'
    use 'https://github.com/hrsh7th/cmp-path'
    use 'https://github.com/hrsh7th/cmp-cmdline'
    use 'https://github.com/hrsh7th/cmp-nvim-lua'
    use 'https://github.com/hrsh7th/nvim-cmp'

    if packer_bootstrap then
        require('packer').sync()
    end
end)

vim.cmd([[
    augroup packer_user_config
        autocmd!
        autocmd User PackerComplete PackerCompile
        autocmd BufWritePost plugins.lua source <afile> | PackerInstall
    augroup end
]])