extends Node

@export var full_deck: Dictionary[int, Card]
@export var card_fallback_texture: Texture

enum CardStyle {
	STICKMAN,
}

func get_shuffled_cards(client_ids: Array[String], cards_to_pick: int) -> Dictionary: # Dictionary[String, Array[int]]
	var dict: Dictionary = {}
	var deck: Array[int] = full_deck.keys()
	deck.shuffle()
	var card_index = 0
	for client_id in client_ids:
		var player_deck: Array[int] = []
		for j in cards_to_pick:
			player_deck.append(deck[card_index])
			card_index += 1
		dict[client_id] = player_deck
	
	# Add trump card, if there are cards left in the deck
	if card_index == 60:
		dict["trump"] = -1
	else:
		dict["trump"] = deck[card_index]
	
	return dict

func get_card_texture(card_id: int, style: CardStyle = CardStyle.STICKMAN) -> Texture:
	var style_name: String = ""
	match style:
		CardStyle.STICKMAN:
			style_name = "stickman"
	return load("res://cards/textures/" + style_name + "/" + _get_card_name(card_id) + ".webp")

func get_winning_card(card_ids: Array[int], trump: int) -> int:
	print("ids: " + str(card_ids) + ", trump: " + str(trump))
	if card_ids.has(56) or card_ids.has(57) or card_ids.has(58) or card_ids.has(59):
		# cards contain magician
		print("checking magician route")
		for card_id in card_ids:
			if full_deck[card_id].card_type == Card.CardType.MAGICIAN:
				print("picked magician")
				return card_id
		return -1 # should not happen
	elif not trump == -1:
		# trump exists, determine winner from this
		print("trump route")
		var largest_trump_card_id: int = -1
		var trump_color: Card.CardColor = full_deck[trump].color
		for card_id in card_ids:
			if full_deck[card_id].color == trump_color and card_id > largest_trump_card_id:
				largest_trump_card_id = card_id
		if not largest_trump_card_id == -1:
			print("picked " + str(largest_trump_card_id))
			return largest_trump_card_id
		
		# no trump played; determine from highest played card
		return _get_largest_non_trump_card(card_ids)
	else:
		# no trump exists
		return _get_largest_non_trump_card(card_ids)

func _get_largest_non_trump_card(card_ids: Array[int]) -> int:
	var largest_card_id: int = -1
	print("nontrump route")
	var first_color: Card.CardColor = _get_first_color_card(card_ids)
	if first_color == Card.CardColor.WHITE:
		print("all white")
		return card_ids[0] # first one wins if all played cards are white
	else:
		for card_id in card_ids:
			if full_deck[card_id].color == first_color and card_id > largest_card_id:
				largest_card_id = card_id
		print("picked " + str(largest_card_id))
		return largest_card_id

## Returns the color of the first non-white card played.
## Returns WHITE if all cards played are white.
func _get_first_color_card(card_ids: Array[int]) -> Card.CardColor:
	for card_id in card_ids:
		if not full_deck[card_id].color == Card.CardColor.WHITE:
			return full_deck[card_id].color
	return Card.CardColor.WHITE

func _get_card_name(card_id: int) -> String:
	var color: String
	var suffix: String
	
	if card_id > 51 and card_id < 56:
		return "jester"
	elif card_id > 55:
		return "magician"
	
	elif card_id < 13:
		color = "blue"
	elif card_id < 26:
		color = "green"
	elif card_id < 39:
		color = "violet"
	else:
		color = "orange"
	
	match card_id:
		0, 13, 26, 39:
			suffix = "1"
		1, 14, 27, 40:
			suffix = "2"
		2, 15, 28, 41:
			suffix = "3"
		3, 16, 29, 42:
			suffix = "4"
		4, 17, 30, 43:
			suffix = "5"
		5, 18, 31, 44:
			suffix = "6"
		6, 19, 32, 45:
			suffix = "7"
		7, 20, 33, 46:
			suffix = "8"
		8, 21, 34, 47:
			suffix = "9"
		9, 22, 35, 48:
			suffix = "10"
		10, 23, 36, 49:
			suffix = "11"
		11, 24, 37, 50:
			suffix = "12"
		12, 25, 38, 51:
			suffix = "13"
		52, 53, 54, 55:
			suffix = "joker"
		56, 57, 58, 59:
			suffix = "magician"
	
	return color + "_" + suffix

func get_card_color(card_id: int) -> Card.CardColor:
	if card_id < 13:
		return Card.CardColor.BLUE
	elif card_id < 26:
		return Card.CardColor.GREEN
	elif card_id < 39:
		return Card.CardColor.RED
	elif card_id < 52:
		return Card.CardColor.YELLOW
	else:
		return Card.CardColor.WHITE