-- Neovim plugin to manage the file system and other tree like structures.
-- https://github.com/nvim-neo-tree/neo-tree.nvim
--
vim.api.nvim_create_autocmd("VimEnter", {
	desc = "Loads neo-tree when opening nvim with a directory",
	callback = function(data)
		-- If nvim was started with a directory
		local directory = vim.fn.isdirectory(data.file) == 1
		if directory then
			vim.cmd("Neotree reveal")
		end
	end,
})

-- vim.api.nvim_create_autocmd("BufEnter", {
-- 	group = vim.api.nvim_create_augroup("load_neo_tree", {}),
-- 	desc = "Loads neo-tree when opening a buffer",
-- 	callback = function()
-- 		-- Only run if Neo-tree is open
-- 		if vim.fn.exists("#neo-tree#") == 1 then
-- 			pcall(function()
-- 				vim.cmd("Neotree reveal")
-- 			end)
-- 		end
-- 	end,
-- })

return {
	"neo-tree.nvim",
	cmd = { "Neotree" },
	after = function()
		require("neo-tree").setup({
			add_blank_line_at_top = false,
			auto_clean_after_session_restore = false,
			sort_case_insensitive = true,
			sort_function = function(a, b)
				-- Explanation: sort only using the path, not the type,
				-- but put a prefix path after if it's a directory
				if string.find(a.path, b.path, 1, true) == 1 and b.type == "directory" and a.path ~= b.path then
					return true
				elseif string.find(b.path, a.path, 1, true) == 1 and a.type == "directory" and a.path ~= b.path then
					return false
				else
					return a.path:lower() < b.path:lower()
				end
			end,
			buffers = {
				follow_current_file = { enabled = true, leave_dirs_open = true },
				group_empty_dirs = false,
				show_unloaded = true,
			},
			-- https://github.com/nvim-neo-tree/neo-tree.nvim/wiki/FAQ#bdelete-makes-the-tree-spans-the-whole-window-how-do-i-prevent-it
			close_if_last_window = false,
			default_source = "buffers",
			enable_cursor_hijack = true,
			enable_diagnostics = true,
			enable_git_status = true,
			enable_modified_markers = true,
			enable_opened_markers = true,
			enable_refresh_on_write = true,
			sources = {
				"buffers",
				"filesystem",
				--"git_status",
				-- "document_symbols",
			},
			filesystem = {
				filtered_items = { visible = true },
				group_empty_dirs = false,
				hijack_netrw_behavior = "open_default",
				use_libuv_file_watcher = true,
			},
			git_status_async = true,
			hide_root_node = false,
			log_level = "info",
			log_to_file = false,
			open_files_do_not_replace_types = { "terminal", "Trouble", "qf", "edgy" },
			open_files_in_last_window = true,
			retain_hidden_root_indent = false,
			signs = true,
			window = {
				position = "right",
				mappings = {
					-- ["i"] = "move_cursor_up",
					["I"] = function(state)
						local tree = state.tree
						local node = tree:get_node()
						local siblings = tree:get_nodes(node:get_parent_id())
						local renderer = require("neo-tree.ui.renderer")
						renderer.focus_node(state, siblings[1]:get_id())
					end,
					["K"] = function(state)
						local tree = state.tree
						local node = tree:get_node()
						local siblings = tree:get_nodes(node:get_parent_id())
						local renderer = require("neo-tree.ui.renderer")
						renderer.focus_node(state, siblings[#siblings]:get_id())
					end,
				},
			},
		})
	end,
}