class_name QuestProgressBar extends Control

const waypoint_template = preload("res://waypoint.tscn")
var length : float
var waypoints : Array = []
@onready var hero_offset : Vector2 = %Hero.position
@onready var hero : HeroIcon = %Hero
@onready var startpoint : Endpoint = %Start
@onready var endpoint : Endpoint = %End
@onready var bar : TextureProgressBar = $ProgressBar
var quest : Quest = null
#signal value_changed(value : float)
#var min_value
#var max_value
#var step
#var page
#var value
#var exp_edit
#var rounded
#var allow_greater
func _ready() -> void:
	length = size.x
	if quest:
		#Generate the waypoints
		generate_waypoints()
		#TODO: Change the hero's portrait
		bar.value = quest.progress
	hero.position = hero_offset + Vector2(length * bar.value / bar.max_value, 0)

func generate_waypoints():
	if len(waypoints) > 0:
		for wp in waypoints:
			wp.queue_free()
	waypoints = []
	
	for i in range(1,quest.steps):
		var pct : float = i / float(quest.steps)
		add_waypoint( pct, quest.step_outcomes[i])
	
func add_waypoint(pct : float, msgs : Dictionary):
		var wp = waypoint_template.instantiate()
		waypoints.append(wp)
		wp.percent = pct
		%Waypoints.add_child(wp)
		wp.global_position = global_position + Vector2(pct * length - 16, -9)
		if bar.value / bar.max_value >= pct:
			wp.fill = true

func update_waypoints(value : float) -> void:
	startpoint.fill = (bar.value / bar.max_value >= startpoint.percent)
	for wp : Waypoint in waypoints:
		wp.fill = (bar.value / bar.max_value >= wp.percent)
	endpoint.fill = (bar.value / bar.max_value >= endpoint.percent)

func setup(quest : Quest) -> void:
	self.quest = quest
	

			
func _on_value_changed(value : float) -> void:
	hero.position = hero_offset + Vector2(length * bar.value / bar.max_value, 0)
	update_waypoints(value)