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

    local function opts(desc)
      return { desc = "nvim-tree: " .. desc, buffer = bufnr, noremap = true, silent = true, nowait = true }
    end
  
    -- default mappings
    api.config.mappings.default_on_attach(bufnr)
  
    -- custom mappings
    vim.keymap.set('n', '<C-t>', api.tree.change_root_to_parent,        opts('Up'))
    vim.keymap.set('n', '?',     api.tree.toggle_help,                  opts('Help'))
    vim.keymap.set('n', 'l',     api.node.open.edit,                  opts('Edit'))
    vim.keymap.set('n', 'h',     api.node.navigate.parent_close,              opts('Parent Close'))
    vim.keymap.set('n', 's',     api.node.open.horizontal,                  opts('Horizontal Split'))
    vim.keymap.set('n', 'v',     api.node.open.vertical,                  opts('Vertical Split'))
end

vim.g.nvim_tree_indent_markers = 1 -- "0 by default, this option shows indent markers when folders are open
vim.g.nvim_tree_auto_ignore_ft = 'startify' --empty by default, don't auto open tree on specific filetypes.

vim.g.nvim_tree_icons = {
    default = '',
    symlink = '',
    git = {unstaged = "", staged = "✓", unmerged = "", renamed = "➜", untracked = ""},
    folder = {default = "", open = "", empty = "", empty_open = "", symlink = ""}
}


return {
	{
		'nvim-tree/nvim-tree.lua',
		dependencies = {
			'nvim-tree/nvim-web-devicons', -- optional
		},
		opts = {
			on_attach = my_on_attach,
			disable_netrw = true,
			hijack_netrw = true,
			--auto_close = false,
			filters = {
				dotfiles = false,
				custom = {}
			},
			git = {
				enable = true,
				ignore = false,
				timeout = 500,
			},
			update_focused_file = {
				-- enables the feature
				enable      = true,
				-- update the root directory of the tree to the one of the folder containing the file if the file is not under the current root directory
				-- only relevant when `update_focused_file.enable` is true
				update_cwd  = false,
				-- list of buffer names / filetypes that will not update the cwd if the file isn't found under the current root directory
				-- only relevant when `update_focused_file.update_cwd` is true and `update_focused_file.enable` is true
				ignore_list = {}
			},
		},
	},
	{
		"telescope.nvim",
		dependencies = {
			{
				"nvim-telescope/telescope-fzf-native.nvim",
				build = "make",
			},
			"nvim-telescope/telescope-file-browser.nvim",
		},
		keys = {
			{
				"<leader>fP",
				function()
					require("telescope.builtin").find_files({
						cwd = require("lazy.core.config").options.root,
					})
				end,
				desc = "Find Plugin File",
			},
			{
				";f",
				function()
					local builtin = require("telescope.builtin")
					builtin.find_files({
						no_ignore = false,
						hidden = true,
					})
				end,
				desc = "Lists files in your current working directory, respects .gitignore",
			},
			{
				";r",
				function()
					local builtin = require("telescope.builtin")
					builtin.live_grep({
						additional_args = { "--hidden" },
					})
				end,
				desc = "Search for a string in your current working directory and get results live as you type, respects .gitignore",
			},
			{
				"\\\\",
				function()
					local builtin = require("telescope.builtin")
					builtin.buffers()
				end,
				desc = "Lists open buffers",
			},
			{
				";t",
				function()
					local builtin = require("telescope.builtin")
					builtin.help_tags()
				end,
				desc = "Lists available help tags and opens a new window with the relevant help info on <cr>",
			},
			{
				";;",
				function()
					local builtin = require("telescope.builtin")
					builtin.resume()
				end,
				desc = "Resume the previous telescope picker",
			},
			{
				";e",
				function()
					local builtin = require("telescope.builtin")
					builtin.diagnostics()
				end,
				desc = "Lists Diagnostics for all open buffers or a specific buffer",
			},
			{
				";s",
				function()
					local builtin = require("telescope.builtin")
					builtin.treesitter()
				end,
				desc = "Lists Function names, variables, from Treesitter",
			},
			{
				"sf",
				function()
					local telescope = require("telescope")

					local function telescope_buffer_dir()
						return vim.fn.expand("%:p:h")
					end

					telescope.extensions.file_browser.file_browser({
						path = "%:p:h",
						cwd = telescope_buffer_dir(),
						respect_gitignore = false,
						hidden = true,
						grouped = true,
						previewer = false,
						initial_mode = "normal",
						layout_config = { height = 40 },
					})
				end,
				desc = "Open File Browser with the path of the current buffer",
			},
		},
		config = function(_, opts)
			local telescope = require("telescope")
			local actions = require("telescope.actions")
			local fb_actions = require("telescope").extensions.file_browser.actions

			opts.defaults = vim.tbl_deep_extend("force", opts.defaults, {
				wrap_results = true,
				layout_strategy = "horizontal",
				layout_config = { prompt_position = "top" },
				sorting_strategy = "ascending",
				winblend = 0,
				mappings = {
					n = {},
				},
			})
			opts.pickers = {
				diagnostics = {
					theme = "ivy",
					initial_mode = "normal",
					layout_config = {
						preview_cutoff = 9999,
					},
				},
			}
			opts.extensions = {
				file_browser = {
					theme = "dropdown",
					-- disables netrw and use telescope-file-browser in its place
					hijack_netrw = true,
					mappings = {
						-- your custom insert mode mappings
						["n"] = {
							-- your custom normal mode mappings
							["N"] = fb_actions.create,
							["h"] = fb_actions.goto_parent_dir,
							["/"] = function()
								vim.cmd("startinsert")
							end,
							["<C-u>"] = function(prompt_bufnr)
								for i = 1, 10 do
									actions.move_selection_previous(prompt_bufnr)
								end
							end,
							["<C-d>"] = function(prompt_bufnr)
								for i = 1, 10 do
									actions.move_selection_next(prompt_bufnr)
								end
							end,
							["<PageUp>"] = actions.preview_scrolling_up,
							["<PageDown>"] = actions.preview_scrolling_down,
						},
					},
				},
			}
			telescope.setup(opts)
			require("telescope").load_extension("fzf")
			require("telescope").load_extension("file_browser")
		end,
	},
}