class_name ProgressStepTracker
extends Object

var _step_name: String = ""
var _message: String = ""
var _subset_index: int = 0
var _subset_count: int = 0

var _tracker: ProgressTracker = null


func _init(tracker: ProgressTracker, step_name: String):
	self._tracker = tracker
	self._step_name = step_name


## Sets the number of substeps for this step
func set_substeps(substeps: int):
	self._subset_count = substeps


## Progresses to the next substep
func substep(message: String = ""):
	self._subset_index += 1
	self._message = message
	self._tracker.progress_update.emit()


## Completes this step
func complete():
	self._tracker.step_complete.emit()


## Returns the name of this step
func get_step_name() -> String:
	return self._step_name


## Returns the message for this step
func get_message() -> String:
	return self._message


## Returns the index of the current substep
func get_substep_index() -> int:
	return self._subset_index


## Returns the number of substeps for this step
func get_substep_count() -> int:
	return self._subset_count


## Returns the progress of this step
func get_progress() -> float:
	if self._subset_count == 0:
		return 0.0
	return float(self._subset_index) / float(self._subset_count)