extends CenterContainer

#fixme INI is probably redundant.
enum {
    INI,
    CARDS,
    CARDS_SELECTED,
    TRANSITION,
    POSTS,
    POSTS_SELECTED,
    DONE
}

@onready var debug_board:Control = $"board of devs"

var has_stage = false: 
    set(focus):
        if not focus == has_stage:
            if focus:
                if selection_state == INI or CARDS:
                    for player in anim_players: player.play("reveal")
                self.show()
                self.mouse_filter = Control.MOUSE_FILTER_IGNORE
            else:
                self.mouse_filter = Control.MOUSE_FILTER_STOP
                self.hide()
        has_stage = focus
        
var _input_locked = true
var selection_state = INI:
    set(state):
        selection_state = state
        _input_locked = !(state == CARDS or state == POSTS)
        
        if state == DONE:
            reset()

var anim_players:Array = []
var curr_selection_id: int = -1:
    set(new_id):
        if selection_state == CARDS or selection_state == POSTS:
            if not curr_selection_id == -1: options[curr_selection_id].highlighted = false
            
            if new_id > options.size() -1: curr_selection_id = 0
            elif new_id < 0: curr_selection_id = options.size() - 1
            else: curr_selection_id = new_id
            
            options[curr_selection_id].highlighted = true
        else:
            curr_selection_id = new_id
            
        print(curr_selection_id)

var output:Array = []
var options:Array = []

signal cards_picked(Array)

# Called when the node enters the scene tree for the first time.
func _ready():
    if get_parent() == get_tree().root: selection_state = CARDS
    
    reset()
    
func reset():
    output = []
    options = []
    anim_players = []
    curr_selection_id = -1
    var card_controls = $cards.get_children()
    for control in card_controls:
        options.append(control.get_child(1))
        anim_players.append(control.get_child(0))

func fill_card_slots(id: int):
    for i in range($cards.get_child_count()):
        var card:Card = $cards.get_child(i).get_child(1)
        card.replace_with(debug_board.get_child(id).get_child(i) as Card)
        card.connect("mouse_entered", Callable(self, "get_highlight"))
        card.owner = self

func fill_post_slots():
    var post_its: Array[PostIt] = []
    for card in output:
        post_its.append_array(card.own_postits)
        print(card.own_postits)
    
    for i in range(post_its.size()):
        options[i].replace_with(post_its[i])
        options[i].owner = self
    
func _input(event):
    if event.is_action_pressed("ui_end"):
        scene_finished(1, false)
    
    if has_stage and not _input_locked:
        if event.is_action_pressed("ui_up") or event.is_action_pressed("ui_left") or event.is_action_pressed("ui_focus_next"):
            curr_selection_id -= 1
        elif event.is_action_pressed("ui_down") or event.is_action_pressed("ui_right") or event.is_action_pressed("ui_focus_prev"):
            curr_selection_id += 1
        if event.is_action_pressed("ui_accept"):
            pick(curr_selection_id)

func pick(id: int):
    if id == -1:
        curr_selection_id = 0
        return
    
    if selection_state == CARDS:
        selection_state = CARDS_SELECTED
    elif selection_state == POSTS:
        selection_state = POSTS_SELECTED
        
    anim_players[id].play("pick")
    var yield_to = anim_players[id].animation_finished
    output.append(options[id])
    
    var sibling_id = -1
    if selection_state == POSTS:
        
        sibling_id = options.find(options[id].sibling)
        
        print("yeet sibling ", sibling_id)
    
    options.remove_at(id)
    anim_players.remove_at(id)
    
    randomize()
    var winning_id = randi() % options.size()
    
    print("Winning ID ", id)
    
    if winning_id == sibling_id:
        winning_id = (winning_id + 1) % options.size()
    
    output.append(options.pop_at(winning_id))
    anim_players.pop_at(winning_id).play("shuffle")
    
    for anim in anim_players:
        anim.play("unshuffle")
    
    await yield_to

    if selection_state == CARDS_SELECTED:
        selection_state = TRANSITION
        options = []
        anim_players = []
        for control in $postIts.get_children():
            options.append(control.get_child(1))
            anim_players.append(control.get_child(0))
            control.get_child(0).play("post")
        curr_selection_id = -1
        
        fill_post_slots()
        
        await anim_players[0].animation_finished
        selection_state = POSTS
    elif selection_state == POSTS_SELECTED:
        var out_str:Array[String] = []
        for card in output:
            out_str.append(card.name)
        emit_signal("cards_picked", out_str)
        print(out_str)
        selection_state = DONE
        State.leave_stage(self)

func handle_hover(new_highlight):
    if not _input_locked:
        curr_selection_id = options.find(new_highlight)

func handle_mouse_button(new_selection: Node, button_event: InputEventMouseButton):
    if not _input_locked:
        if button_event.button_index == MOUSE_BUTTON_LEFT and button_event.pressed:
            pick(options.find(new_selection))

func scene_finished(id: int, repeat):
    print(name, id, repeat)
    if not repeat:
        fill_card_slots(id)
        State.transition_stage_to(self)
        selection_state = CARDS

func play_scene(_id, _repeat):
    pass