# TODO: convert to just combat UI, instancing appropriate zone
extends Control


@export var debug = false
@export var spawnTimerValue = 5.0

var deltaCount := 0
var enemyMoveSpeed := 5.0
# var questComplete := false
var canContinue := false

var middleX
var playerPos


func _ready() -> void:
    if debug:
        $MarginContainer/UIBottom/UIBottomCenter/MenuButtons/DebugMenu.show()
        Engine.time_scale = 3.0
        
    SignalBus.quest_completed.connect(_on_quest_completed)
    
    _generate_quest()

    middleX = get_viewport_rect().size.x / 2
    playerPos = Vector2(middleX, get_viewport_rect().size.y * (0.75))

    $SpawnTimer.start(spawnTimerValue)
    _spawn_enemies(1)
    # _spawn_enemies(5)
    

func _process(_delta: float) -> void:
    deltaCount += 1
    playerPos = Vector2(middleX, get_viewport_rect().size.y * (0.75))
        

func _generate_quest() -> void:
    var quest = load("res://scenes/quest.tscn").instantiate()
    %QuestsContainer.add_child(quest)

    
func _create_enemy():
    var enemy = load("res://scenes/enemy.tscn").instantiate()
    enemy.scale = Vector2.ONE * 0.5
    enemy.position = Vector2(randi_range(0, get_viewport_rect().size.x), -50)
    enemy.speed *= randf_range(0.67, 1.5)
    enemy.target = playerPos
    
    return enemy
    
func _get_enemies() -> Array:
    var enemies := get_tree().get_nodes_in_group("enemies")
    return enemies
    
    
func _get_num_enemies() -> int:
    var enemies := get_tree().get_nodes_in_group("enemies")
    return len(enemies)
    

func _spawn_enemies(numEnemies: int) -> void:
    #await get_tree().create_timer(time).timeout
    # var numEnemies = randi_range(1, maxEnemies)
    for i in range(numEnemies):
        var enemy = _create_enemy()
        %WorldArea.add_child(enemy)
        # var randEnemyMoveSpeed := randf_range(0.5, 2.0)*enemyMoveSpeed
        # create_tween().tween_property(enemy, "position", playerPos, randEnemyMoveSpeed)


func _on_button_test_pressed() -> void:
    pass
    

func _on_button_exit_pressed() -> void:
    get_tree().quit()


func _on_spawn_timer_timeout() -> void:
    _spawn_enemies(1)


# TODO: move all quest stuff to quest class?
func _on_quest_completed() -> void:
    $SpawnTimer.stop()
    # questComplete = true
    if _get_enemies().is_empty(): # and questComplete:
        canContinue = true
        # print("Area Complete!")
        # get_tree().quit()