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


@export var spawnTimerValue = 10.0

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

var middleX
var playerPos


func _ready() -> void:
    if Globals.debug:
        %DebugMenu.show()
        Engine.time_scale = 10.0
        
    SignalBus.quest_completed.connect(_on_quest_completed)
    SignalBus.enemy_damaged_player.connect(_on_enemy_damaged_player)
    
    _generate_quest()

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

    $SpawnTimer.start(spawnTimerValue)
    _spawn_enemies(randi_range(1, 5))
    # _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:
    %DebugMenu/ButtonTest.text = "pass"
    pass
    

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


func _on_spawn_timer_timeout() -> void:
    _spawn_enemies(randi_range(1, 5))
    

func _get_player_current_health() -> void:
    var playerCurrHeath = PlayerState.player_currenthealth
    %PlayerInfo/PlayerHealthBar/PlayerHealthCurrent.text = str(playerCurrHeath)
    %PlayerInfo/PlayerHealthBar.value = playerCurrHeath
    if playerCurrHeath <= 0:
        Engine.time_scale = 0.0001
    

func _set_player_display() -> void:
    var playerMaxHeath = PlayerState.player_maxhealth
    var playerCurrHeath = PlayerState.player_currenthealth
    %PlayerInfo/PlayerHealthBar/PlayerHealthMax.text = str(playerMaxHeath)
    %PlayerInfo/PlayerHealthBar/PlayerHealthCurrent.text = str(playerCurrHeath)
    %PlayerInfo/PlayerHealthBar.value = playerCurrHeath


# 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()


func _on_enemy_damaged_player() -> void:
    _get_player_current_health()