extends Node2D

@onready var health_bar: HealthBar = $HealthBar
@onready var overlay: CanvasLayer = $Overlay
@onready var transition: Transition = $Overlay/Transition
@onready var spawn_timer: Timer = $Timer
@onready var ui_root: Control = $UI/Root
@onready var wave_label: Label = $UI/Root/WaveLabel

@onready var main_menu: PackedScene = load("res://screens/main_menu.tscn")
@onready var bot_scene: PackedScene = load("res://assets/scenes/bot.tscn")
@onready var game_over_scene: PackedScene = load("res://assets/scenes/game_over.tscn")

@onready var spawn_points: Array[Marker2D] = [
	$EnemySpawns/EnemySpawn_1,
	$EnemySpawns/EnemySpawn_2,
	$EnemySpawns/EnemySpawn_3,
]

enum Phase {
	PHASE_SETUP,
	PHASE_COMBAT,
	PHASE_LOOT,
}

var phase: Phase = Phase.PHASE_SETUP
var waves_completed: int = 0:
	set(new_value):
		waves_completed = new_value
		wave_label.text = "WAVE: %d" % (new_value + 1)

func _ready() -> void:
	waves_completed = 0
	overlay.visible = true
	transition.slide_out()
	await transition.game_fully_visible
	spawn_bot()

func _process(_delta: float) -> void:
	if Input.is_action_pressed("ui_cancel"):
		go_to_main_menu()
		
func go_to_main_menu() -> void:
	var tree = get_tree()
	transition.text = ""
	tree.paused = true
	transition.slide_in()
	await transition.game_fully_hidden
	tree.change_scene_to_packed(main_menu)
	tree.paused = false
		
func spawn_bot() -> void:
	var spawn = spawn_points.pick_random()
	var bot = bot_scene.instantiate()
	bot.global_position = spawn.global_position
	add_child(bot)

func _on_timer_timeout() -> void:
	spawn_bot()

func base_hit() -> void:
	health_bar.health -= 1
	if health_bar.health == 0:
		game_over()

func game_over() -> void:
	spawn_timer.stop()
	var foes = get_tree().get_nodes_in_group("foe")
	for foe in foes:
		foe.queue_free()
	
	var gos: GameOver = game_over_scene.instantiate()
	gos.message = "YOU DIED AFTER\nCOMPLETING %d WAVES!" % waves_completed
	ui_root.add_child(gos)
	await gos.closed
	
	go_to_main_menu()

func _on_base_area_entered(area: Area2D) -> void:
	if area.is_in_group("foe") || area.is_in_group("foe_weapons"):
		base_hit()