extends Control


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

var deltaCount := 0
var enemyMoveSpeed := 5.0
var questsComplete := false

var middleX
var playerPos


func _ready() -> void:
    middleX = get_viewport_rect().size.x/2
    playerPos = Vector2(middleX, get_viewport_rect().size.y*(0.75))
    if not debug:
        $MarginContainer/Menus/MenuButtons/DebugMenu.hide()
    $SpawnTimer.start(spawnTimerValue)
    
func _create_enemy():
    var enemy = load("res://scenes/npc.tscn").instantiate()
    enemy.scale = Vector2.ONE*0.5
    enemy.position = Vector2(randi_range(0, get_viewport_rect().size.x), -50)
    #enemy.get_node("%NPCNameLabel").text = "Test"
    
    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 _get_distance_to_player(enemy: Node) -> float:
    return enemy.position.distance_squared_to(playerPos)

    
func _get_target() -> Node:
    # arrays of enemies by difficulty
    var enemies := _get_enemies()
    var numEnemies := _get_num_enemies()
    #var highestDifficulty
    var enemyDists
    var closestEnemy
    # get array of difficulties using map
    if not enemies.is_empty():
        # get index of largest non-zero val in numEnemies array, ignoring minions
        #highestDifficulty = numEnemies.find(0, 1) - 1
        enemyDists = enemies.map(_get_distance_to_player)
        closestEnemy = enemies[enemyDists.find(enemyDists.min())]
    #var closestDist = INF
    #for enemy in enemies:
        #var enemyPos = enemy.position
        #var enemyDist = playerPos.distance_squared_to(enemyPos)
        #if enemyDist < closestDist:
            #closestEnemy = enemy
    print(enemies)
    #print(highestDifficulty)
    print(enemyDists)
    print(closestEnemy)
            
    return closestEnemy


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

func _process(delta: float) -> void:
    #var closestEnemy = _get_closest_enemy()
    deltaCount += 1
    #if numEnemies != 0:
        #print(playerPos.distance_squared_to(closestEnemy.position))
        # change movement test, not sure it's working right...
        #create_tween().tween_property(enemies[randi_range(0, numEnemies-1)], "position", Vector2(100, 100), 1.0)
        #if deltaCount % 200 == 0:
            #%SpawnArea.remove_child(closestEnemy)
    if not _get_enemies().is_empty() and deltaCount % 100 == 0:
        var targetEnemy = _get_target()
        $SpawnArea.remove_child(targetEnemy)
    # change to signal
    if questsComplete:
        $SpawnTimer.stop()
        if _get_enemies().is_empty():
            print("Area Complete!")


func _on_button_test_pressed() -> void:
    # remove all existing enemies from scene and array
    #for enemy in enemies:
        #remove_child(enemy)
    #enemies = []
    
    questsComplete = true
    

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


func _on_spawn_timer_timeout() -> void:
    _spawn_enemies(5)