class_name PlayerHand
extends Node3D

## Distance cards will be apart when there is a small amount of them
var card_distance_max: float = 0.18

## Distance cards will be apart when there is a large amount of them
var card_distance_min: float = 0.09

# Card distances for hands of other players
var _card_distance_max_others: float = 0.03
var _card_distance_min_others: float = 0.01

var _is_owned: bool

## How many test cards to add
@export var card_scene: PackedScene
@export var card_container: Node3D
@export_range(0, 20, 0.1, "radians_as_degrees") var card_angle: float

@export var name_label: Label3D
@export var rank_label: Label3D
@export var hide_client_name: bool = false
@export var card_disallowed_label: Label

var _selected_card: PlayingCard = null
var _cards_in_hand_ids: Array[int] = []

var _trump_id: int = -1
var _first_played_card_id: int = -1

signal card_selected(card_id: int)
signal card_played(card_id: int)

func _ready() -> void:
	# tests!
	# tries playing same color
	assert(_is_card_allowed(1, 3, [1, 15]) == true)
	# tries playing trump while having same color
	assert(_is_card_allowed(15, 3, [1, 15]) == false)
	# tries playing trump while not having the same color
	assert(_is_card_allowed(15, 3, [19, 15]) == true)
	# tries playing first card
	assert(_is_card_allowed(27, -1, [27, 1, 15]) == true)
	# tries playing wizard as first
	assert(_is_card_allowed(59, -1, [59, 1, 15]) == true)
	# tries playing wizard as non-first
	assert(_is_card_allowed(59, 3, [59, 1, 15]) == true)
	# tries playing wizard after first is wizard
	assert(_is_card_allowed(59, 58, [59, 1, 15]) == true)
	# tries playing numbered after first is jester
	assert(_is_card_allowed(3, 54, [3, 1, 15]) == true)
	
	assert(_is_card_allowed(13, 48, [13]) == true)
	
	
	if hide_client_name:
		name_label.hide()

func set_player_name(player_name: String) -> void:
	name_label.text = player_name

func add_card(card: PlayingCard) -> void:
	card_container.add_child(card)
	_arrange_cards()

func add_cards(card_ids: Array[int], is_owned: bool) -> void:
	_is_owned = is_owned
	card_ids.sort()
	for card_id in card_ids:
		var card: PlayingCard = card_scene.instantiate()
		if is_owned:
			card.card_clicked.connect(_on_card_clicked)
		card.setup_card_details(card_id)
		add_card(card)
		_cards_in_hand_ids.append(card_id)
		if card_ids.size() == 1:
			card.rotate_y(PI)
		await get_tree().create_timer(0.16).timeout

func remove_card_by_id(card_id: int) -> void:
	for card in card_container.get_children():
		if card.card_details.card_id == card_id:
			remove_card(card)
			return

func remove_card(card: PlayingCard) -> void:
	card_container.remove_child(card)
	card.queue_free()
	_cards_in_hand_ids.erase(card.card_details.card_id)
	_arrange_cards()

func _arrange_cards() -> void:
	var cards = card_container.get_children()
	# Only arrange cards if there are any!
	if cards.size() > 0:
		var card_distance: float = _get_card_distance(cards.size() - 1)
		var desired_width: float = (card_distance * (cards.size() - 1))
		var card_position = -desired_width / 2.0
		for card in cards:
			card.move_to(card_position)
			card_position += card_distance
			card.rotation.y = card_angle

func _get_card_distance(card_count: int) -> float:
	if _is_owned:
		return card_distance_min + ((card_distance_max - card_distance_min) * (1.0 - (float(card_count) / 19.0)))
	else:
		return _card_distance_min_others + ((_card_distance_max_others - _card_distance_min_others) * (1.0 - (float(card_count) / 19.0)))

func _on_card_clicked(playing_card: PlayingCard) -> void:
	print("check card is " + str(_first_played_card_id))
	if not _is_card_allowed(
		playing_card.card_details.card_id,
		_first_played_card_id,
		_cards_in_hand_ids,
	):
		_notify_disallowed_card()
		return
	
	if _selected_card:
		_selected_card.unselect()
	if _selected_card == playing_card:
		_selected_card = null
	else:
		_selected_card = playing_card
		playing_card.select()
	
	if _selected_card:
		card_selected.emit(_selected_card.card_details.card_id)
	else:
		card_selected.emit(-1)

func _on_play_card_button_pressed() -> void:
	if not _selected_card:
		return
	
	card_played.emit(_selected_card.card_details.card_id)
	remove_card(_selected_card)
	_selected_card = null
	card_selected.emit(-1)

func display_rank(rank: int, score: int) -> void:
	rank_label.text = "#{rank} ({pts} pts)".format({
		"rank": rank,
		"pts": score,
	})

func _is_card_allowed(requested_card_id: int, first_played_card_id: int, hand_card_ids: Array[int]) -> bool:
	var card_color: Card.CardColor = CardManager.get_card_color(requested_card_id)
	var first_played_color = CardManager.get_card_color(first_played_card_id)
	
	print("card details: req: {r}, play: {p}, hand: {han}".format({
		"r": requested_card_id,
		"p": first_played_card_id,
		"han": hand_card_ids,
	}))
	
	# no card played yet, everything is allowed
	if first_played_card_id == -1:
		print("no first played")
		return true
	
	if first_played_color == Card.CardColor.WHITE:
		print("first is white")
		return true
	
	# card is white, may play
	if card_color == Card.CardColor.WHITE:
		print("yours is white, may play")
		return true
	
	# requested card is same color as laid card; may play
	if first_played_color == card_color:
		print("colors match")
		return true
	# requested card is of different color
	else:
		var colors_in_hand: Array[Card.CardColor] = []
		for id in hand_card_ids:
			colors_in_hand.append(CardManager.get_card_color(id))
		
		# player has played color, must play requested color
		if colors_in_hand.has(first_played_color):
			print("has played color, must not play")
			return false
		# player does not have played color, may play anything
		else:
			print("does not have played color, may play")
			return true

func _notify_disallowed_card() -> void:
	if card_disallowed_label:
		card_disallowed_label.show()
		await get_tree().create_timer(1.0).timeout
		card_disallowed_label.hide()

func _on_web_client_tcp_trump_received(trump_id: int) -> void:
	_trump_id = trump_id

func _on_web_client_tcp_received_first_card(card_id: int) -> void:
	_first_played_card_id = card_id

func _on_web_client_tcp_reset_first_card() -> void:
	_first_played_card_id = -1