local function on_attach(bufnr)
    local api = require("nvim-tree.api")

    local function opts(desc)
        return { desc = "Tree: " .. desc, buffer = bufnr, noremap = true,
            silent = true, nowait = true }
    end

    vim.keymap.set("n", "<CR>", api.node.open.edit, opts("Open"))

end

local tree = {
	'nvim-tree/nvim-tree.lua',
	lazy = false,
	dependencies = { 'nvim-tree/nvim-web-devicons' },
	opts = {
        on_attach = on_attach,
        disable_netrw = true,
		sort_by = "case_sensitive",
		view = {
			adaptive_size = true,
            centralize_selection = true,
            number = true,
            relativenumber = true,
		},
		renderer = {
			group_empty = true,
            highlight_git = true,
		},
		filters = {
			dotfiles = true,
		},
        update_focused_file = {
            enable = true,
        },
        actions = {
            change_dir = {
                enable = false,
            },
        },
	},
}

local function is_modified_buffer_open(buffers)
    for _, v in pairs(buffers) do
        if v.name:match("NvimTree_") == nil then
            return true
        end
    end
    return false
end

-- [[
vim.api.nvim_create_autocmd("BufEnter", {
    nested = true,
    callback = function()
        if
            #vim.api.nvim_list_wins() == 1
            and vim.api.nvim_buf_get_name(0):match("NvimTree_") ~= nil
            and is_modified_buffer_open(vim.fn.getbufinfo({ bufmodified = 1 })) == false
        then
            vim.cmd("quit")
        end
    end,
})
-- ]]

return { tree }