class_name Planter

extends Node2D

signal seed_list_updated

const QUEUE_LENGTH := 6 # ENORME

@onready var plant_scene = preload("res://objects/Plant.tscn")
@onready var timer: Timer = $Timer

@export var plants: Array[PlantType]

@export var camera: Camera2D

# index of the PlantType in plants
var seed_queue: Array[int]
var can_plant := true

func get_plant_from_queue(index: int = -1) -> PlantType:
	if index == -1:
		return plants[seed_queue.back()]
	return plants[seed_queue[index]]

func _ready() -> void:
	for i in range(QUEUE_LENGTH):
		seed_queue.push_front(randi_range(0, plants.size() - 1))
	seed_list_updated.emit()

func _process(delta: float) -> void:
	var space := get_world_2d().direct_space_state
	var parameters = PhysicsPointQueryParameters2D.new()
	parameters.position = camera.get_global_mouse_position()
	parameters.collide_with_areas = true
	parameters.collide_with_bodies = false
	var result := space.intersect_point(parameters, 1)
	can_plant = result.size() == 0

func take_next_seed() -> PlantType:
	var plant_ind: int = seed_queue.pop_back()
	seed_queue.push_front(randi_range(0, plants.size() - 1))
	seed_list_updated.emit()
	return plants[plant_ind]

func _unhandled_input(_event: InputEvent) -> void:
	if can_plant and Input.is_action_just_pressed("plant") and timer.is_stopped():
		var chosen_type: PlantType = take_next_seed()
		var plant = plant_scene.instantiate()
		add_child(plant)
		plant.init(chosen_type)
		plant.plant(camera.get_global_mouse_position())
		timer.start()