tool
extends PanelContainer

signal importer_state_changed
signal close_requested

var result_code = preload("../config/result_codes.gd")
var _sf_creator = preload("./sprite_frames_creator.gd").new()

var _config
var _file_system: EditorFileSystem

var _file_dialog_aseprite: FileDialog
var _output_folder_dialog: FileDialog
var _warning_dialog: AcceptDialog


func _ready():
	_file_dialog_aseprite = _create_aseprite_file_selection()
	_output_folder_dialog = _create_outuput_folder_selection()
	_warning_dialog = AcceptDialog.new()

	_sf_creator.init(_config, _file_system)

	get_parent().add_child(_file_dialog_aseprite)
	get_parent().add_child(_output_folder_dialog)
	get_parent().add_child(_warning_dialog)

	_load_persisted_config()

func _exit_tree():
	_file_dialog_aseprite.queue_free()
	_output_folder_dialog.queue_free()
	_warning_dialog.queue_free()


func init(config, editor_file_system: EditorFileSystem):
	_config = config
	_file_system = editor_file_system


func _load_persisted_config():
	_split_mode_field().pressed = _config.should_split_layers()
	_only_visible_layers_field().pressed = _config.should_include_only_visible_layers()
	_exception_pattern_field().text = _config.get_exception_pattern()
	_custom_name_field().text = _config.get_last_custom_name()
	_file_location_field().text = _config.get_last_source_path()
	_do_not_create_res_field().pressed = _config.should_not_create_resource()

	var output_folder = _config.get_last_output_path()
	_output_folder_field().text = output_folder if output_folder != "" else "res://"


func _open_aseprite_file_selection_dialog():
	var current_selection = _file_location_field().text
	if current_selection != "":
		_file_dialog_aseprite.current_dir = current_selection.get_base_dir()
	_file_dialog_aseprite.popup_centered_ratio()


func _open_output_folder_selection_dialog():
	var current_selection = _output_folder_field().text
	if current_selection != "":
		_output_folder_dialog.current_dir = current_selection
	_output_folder_dialog.popup_centered_ratio()


func _create_aseprite_file_selection():
	var file_dialog = FileDialog.new()
	file_dialog.mode = FileDialog.MODE_OPEN_FILE
	file_dialog.access = FileDialog.ACCESS_FILESYSTEM
	file_dialog.connect("file_selected", self, "_on_aseprite_file_selected")
	file_dialog.set_filters(PoolStringArray(["*.ase","*.aseprite"]))
	return file_dialog


func _create_outuput_folder_selection():
	var file_dialog = FileDialog.new()
	file_dialog.mode = FileDialog.MODE_OPEN_DIR
	file_dialog.access = FileDialog.ACCESS_RESOURCES
	file_dialog.connect("dir_selected", self, "_on_output_folder_selected")
	return file_dialog


func _on_aseprite_file_selected(path):
	_file_location_field().text = path
	_config.set_last_source_path(path)


func _on_output_folder_selected(path):
	_output_folder_field().text = path
	_config.set_last_output_path(path)


func _on_next_btn_up():
	var aseprite_file = _file_location_field().text
	var output_location = _output_folder_field().text
	var split_layers = _split_mode_field().pressed

	var export_mode = _sf_creator.LAYERS_EXPORT_MODE if split_layers else _sf_creator.FILE_EXPORT_MODE
	var options = {
		"export_mode": export_mode,
		"exception_pattern": _exception_pattern_field().text,
		"only_visible_layers": _only_visible_layers_field().pressed,
		"output_filename": _custom_name_field().text,
		"do_not_create_resource": _do_not_create_res_field().pressed,
		"remove_source_files_allowed": true
	}
	var exit_code = _sf_creator.create_resource(aseprite_file, output_location, options)
	if exit_code is GDScriptFunctionState:
		exit_code = yield(exit_code, "completed")

	if exit_code != 0:
		_show_error(exit_code)
		return
	_show_import_success_message()


func _on_close_btn_up():
	_close_window()


func _close_window():
	_save_config()
	self.emit_signal("close_requested")


func _save_config():
	_config.set_split_layers(_split_mode_field().pressed)
	_config.set_exception_pattern(_exception_pattern_field().text)
	_config.set_custom_name(_custom_name_field().text)
	_config.set_include_only_visible_layers(_only_visible_layers_field().pressed)
	_config.set_do_not_create_resource(_do_not_create_res_field().pressed)
	_config.save()


func _show_error(code: int):
	_show_error_message(result_code.get_error_message(code))


func _show_error_message(message: String):
	_warning_dialog.dialog_text = "Error: %s" % message
	_warning_dialog.popup_centered()


func _show_import_success_message():
	_warning_dialog.dialog_text = "Aseprite import succeeded"
	_warning_dialog.popup_centered()
	_save_config()


func _file_location_field() -> LineEdit:
	return $container/options/file_location/HBoxContainer/file_location_path as LineEdit


func _output_folder_field() -> LineEdit:
	return $container/options/output_folder/HBoxContainer/file_location_path as LineEdit


func _exception_pattern_field() -> LineEdit:
	return $container/options/exclude_pattern/pattern as LineEdit


func _split_mode_field() -> CheckBox:
	return $container/options/layer_importing_mode/split_layers/field as CheckBox


func _only_visible_layers_field() -> CheckBox:
	return $container/options/layer_importing_mode/visible_layers/field as CheckBox


func _custom_name_field() -> LineEdit:
	return $container/options/custom_filename/pattern as LineEdit


func _do_not_create_res_field() -> CheckBox:
	return $container/options/layer_importing_mode/disable_resource_creation/field as CheckBox