local install_path = vim.fn.stdpath('data') ..
    '/site/pack/packer/start/packer.nvim'
local packer_bootstrap
if vim.fn.empty(vim.fn.glob(install_path)) > 0 then
    packer_bootstrap = vim.fn.system({
        'git',
        'clone',
        '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' }

    -- settings
    use { 'https://github.com/owozsh/amora' }
    use { 'https://github.com/editorconfig/editorconfig-vim' }
    use { 'https://github.com/antoinemadec/FixCursorHold.nvim' }

    -- filetypes
    use {
        'https://github.com/nvim-treesitter/nvim-treesitter',
        run = function()
            require('nvim-treesitter.install').update({ with_sync = true })
        end
    }
    use {
        'https://github.com/nvim-orgmode/orgmode',
        tag = '*',
        requires = 'https://github.com/nvim-treesitter/nvim-treesitter'
    }
    use {
        'https://github.com/JoosepAlviste/nvim-ts-context-commentstring',
        requires = 'https://github.com/nvim-treesitter/nvim-treesitter'
    }

    -- completion
    use {
        'https://github.com/hrsh7th/nvim-cmp',
        requires = {
            'https://github.com/hrsh7th/cmp-nvim-lsp',
            'https://github.com/hrsh7th/cmp-buffer',
            'https://github.com/hrsh7th/cmp-path',
            'https://github.com/hrsh7th/cmp-cmdline',
            {
                'https://github.com/saadparwaiz1/cmp_luasnip',
                requires = 'https://github.com/L3MON4D3/LuaSnip'
            },
            'https://github.com/hrsh7th/cmp-nvim-lua',
            'https://github.com/uga-rosa/cmp-dictionary',
        }
    }

    -- lsp
    use {
        'https://github.com/neovim/nvim-lspconfig',
        tag = '*',
        requires = 'https://github.com/hrsh7th/cmp-nvim-lsp'
    }
    use {
        'https://github.com/lukas-reineke/lsp-format.nvim',
        tag = '*'
    }
    use { 'https://github.com/ray-x/lsp_signature.nvim' }

    -- tools
    use {
        'https://github.com/folke/which-key.nvim',
        config = function()
            require('which-key').setup({})
        end
    }
    use {
        'https://github.com/nvim-telescope/telescope.nvim',
        tag = '*',
        requires = {
            'https://github.com/nvim-lua/plenary.nvim',
            'https://github.com/nvim-treesitter/nvim-treesitter',
        },
    }
    use {
        'https://github.com/kyazdani42/nvim-tree.lua',
        tag = '*'
    }

    -- coding
    use {
        'https://github.com/numToStr/Comment.nvim',
        tag = '*'
    }
    use {
        'https://github.com/TimUntersberger/neogit',
        requires = {
            'https://github.com/nvim-lua/plenary.nvim',
            'https://github.com/folke/which-key.nvim',
            'https://github.com/sindrets/diffview.nvim'
        },
    }
    use { 'https://github.com/gentoo/gentoo-syntax' }
    use {
        'https://github.com/windwp/nvim-autopairs',
        config = function() require("nvim-autopairs").setup {} end
    }
    use { 'https://github.com/L3MON4D3/LuaSnip' }
    use {
        'https://github.com/tpope/vim-fugitive',
        tag = '*'
    }
    use {
        'https://github.com/lewis6991/gitsigns.nvim',
        tag = '*'
    }
    use { 'https://github.com/ahmedkhalf/project.nvim' }

    -- net
    use { -- embed nvim in browsers
        'https://github.com/glacambre/firenvim',
        tag = '*',
        run = function()
            vim.fn['firenvim#install'](0)
        end
    }

    -- ensure plugins are installed and compiled
    if packer_bootstrap then
        require('packer').sync()
    elseif not io.open(vim.fn.stdpath('config') .. '/plugin') then
        require('packer').install()
    end
end)

-- source file, install and compile plugins when this file is written
vim.api.nvim_create_augroup('config_plugins', { clear = true })
vim.api.nvim_create_autocmd(
    { 'BufWritePost' },
    {
        group = 'config_plugins',
        pattern = { vim.fn.stdpath('config') .. '/lua/my/plugins.lua' },
        command = [[source <afile> | PackerInstall]]
    }
)
vim.api.nvim_create_autocmd(
    { 'User' },
    {
        group = 'config_plugins',
        pattern = 'PackerComplete',
        command = [[PackerCompile]]
    }
)
vim.api.nvim_create_autocmd(
    { 'User' },
    {
        group = 'config_plugins',
        pattern = 'PackerCompileDone',
        command = [[echo 'plugins compiled']]
    }
)