@tool
extends CanvasLayer
class_name VendingMachine

enum State {CHOOSE,PAY,FETCH}
enum ChooseState {NONE,FIRST,SECOND}

@export_tool_button("Update", "Callable") var update_action = update

@export var state : State = State.CHOOSE : set = set_state
@export var choose_state : ChooseState = ChooseState.NONE : set = set_choose_state
@export var artefact_1 : Artefact = null : set = set_artifact_1
@export var artefact_2 : Artefact = null : set = set_artifact_2

func _ready():
    update()

func update():
    set_artifact_1()
    set_artifact_2()
    set_state()

func set_state(s := state):
    state = s
    if is_node_ready():
       %PayButton.visible = state == State.PAY
       %FetchButton.visible = state == State.FETCH

       match state:
            State.CHOOSE:
                %IndicationLabel.text = "CHOOSE_AN_ITEM"
            State.PAY:
                %IndicationLabel.text = "PAY_THE_PRICE"
            State.FETCH:
                %IndicationLabel.text = "GET_YOUR_ITEM"

func set_choose_state(s := choose_state):
    choose_state = s
    if is_node_ready():
        %VendingMachine3d.screen_1_hide = s != ChooseState.FIRST
        %VendingMachine3d.screen_2_hide = s != ChooseState.SECOND

func set_artifact_1(a := artefact_1):
    artefact_1 = a
    if is_node_ready() and a:
        %SelectButton1.text = a.get_artefact_name()
        %VendingMachine3d.object_1_scene = a.get_3d_scene()

func set_artifact_2(a := artefact_2):
    artefact_2 = a
    if is_node_ready() and a:
        %SelectButton2.text = a.get_artefact_name()
        %VendingMachine3d.object_2_scene = a.get_3d_scene()


func _on_fetch_button_button_down():
    pass # TODO : Adding the artifacts


func _on_pay_button_button_down():
    # TODO : The payment
    if state == State.PAY and choose_state != ChooseState.NONE:
        state = State.FETCH

        if choose_state == ChooseState.FIRST:
            %VendingMachine3d.fall_object_1()
        else :
            %VendingMachine3d.fall_object_2()

func _on_select_button_1_button_down():
    choose_state = ChooseState.FIRST
    if state == State.CHOOSE:
        state = State.PAY

func _on_select_button_2_button_down():
    choose_state = ChooseState.SECOND
    if state == State.CHOOSE:
        state = State.PAY

func _on_select_button_bis_1_button_down():
    choose_state = ChooseState.FIRST
    if state == State.CHOOSE:
        state = State.PAY

func _on_select_button_bis_2_button_down():
    choose_state = ChooseState.SECOND
    if state == State.CHOOSE:
        state = State.PAY