tool
extends Control

const DataManagerAddonSettings = preload("res://addons/data_manager/resources/data_manager_addon_settings.gd")

signal inspect_data

export(PackedScene) var resource_scene : PackedScene
export(PackedScene) var folder_entry_button_scene : PackedScene
export(String) var base_folder : String = "res://"
export(NodePath) var main_container : NodePath
export(NodePath) var folder_entry_container_path : NodePath

var _main_container : Node
var _resource_scene : Node
var _folder_entry_container : Node

var _modules : Array = Array()
var _settings : DataManagerAddonSettings = null

var _initialized : bool = false
var _plugin : EditorPlugin = null

func _enter_tree():
	if !is_connected("visibility_changed", self, "on_visibility_changed"):
		connect("visibility_changed", self, "on_visibility_changed")

func on_visibility_changed():
	if _plugin && is_visible_in_tree() && !_initialized:
		_initialized = true
		load_data()

func load_data():
	var dir : Directory = Directory.new()
	
	_settings = _plugin.settings
	
	_main_container = get_node(main_container)
	
	_resource_scene = resource_scene.instance()
	_main_container.add_child(_resource_scene)
	_resource_scene.owner = _main_container
	_resource_scene.connect("inspect_data", self, "inspect_data")
	
	_folder_entry_container = get_node(folder_entry_container_path)
	
	for ch in _folder_entry_container.get_children():
		ch.queue_free()
	
	var index = 0
	for f in _settings.folders:
		if f.header != "":
			var h : Label = Label.new()
			
			_folder_entry_container.add_child(h)
			h.owner = _folder_entry_container
			
			h.text = f.header
		
		var fe : Node = folder_entry_button_scene.instance()
		
		_folder_entry_container.add_child(fe)
		fe.owner = _folder_entry_container
		
		fe.text = f.name
		fe.tab = index
		
		fe.set_main_panel(self)
		
		index += 1
	
	set_tab(0)


func initialize_modules() -> void:
	_modules.clear()
	
	load_modules_at("res://")
	
	_modules.sort_custom(ModulePathSorter, "sort_ascending")
	
	for module in _modules:
		if module.has_method("load_module"):
			module.load_module()
	
func load_modules_at(path : String) -> void:
	var dir = Directory.new()
	if dir.open(path) == OK:
		dir.list_dir_begin()
		var file_name = dir.get_next()
		while file_name != "":
			if file_name == "." or file_name == "..":
				file_name = dir.get_next()
				continue

			if dir.current_is_dir():
				if path == "res://":
					load_modules_at(path + file_name)
				else:
					load_modules_at(path + "/" + file_name)
			else:
				if file_name == "game_module.tres":
					var res : Resource = null
					
					if path == "res://":
						res = ResourceLoader.load(path + file_name)
					else:
						res = ResourceLoader.load(path + "/" + file_name)
						
					if res.enabled:
						_modules.append(res)
					
			file_name = dir.get_next()
	else:
		print("An error occurred when trying to access the path: " + path)


class ModulePathSorter:
	static func sort_ascending(a, b):
		if a.resource_path < b.resource_path:
			return true
		return false


func set_tab(tab_index : int) -> void:
	hide_all()
	
	_resource_scene.show()
	_resource_scene.set_resource_type(_settings.folder_get_folder(tab_index), _settings.folder_get_type(tab_index))
	
func hide_all() -> void:
	_resource_scene.hide()

func inspect_data(var data : Resource) -> void:
	emit_signal("inspect_data", data)

func set_plugin(plugin : EditorPlugin) -> void:
	_plugin = plugin