class_name CardDisplay extends Control

# Base card dimensions
const BASE_CARD_WIDTH = 150
const BASE_CARD_HEIGHT = 250
const CARD_MARGIN = 10
const MAX_HAND_WIDTH_RATIO = 0.7  # Maximum portion of screen width to use for hand

var cardDisplays = []  # Array of {panel: Node, card: Card}
var selectedCard = null
var container: HBoxContainer
var cardPreviewScene = preload("res://card_preview_panel.tscn")
var currently_hovered_card = null
# Preview card panel instance for hovering
var hoveredPreview: CardPreviewPanel = null
var isPreviewVisible = false

func _ready():
    # Create the container for the hand
    container = HBoxContainer.new()
    container.name = "Hand"
    container.position = Vector2(10, 500)
    container.size_flags_horizontal = SIZE_EXPAND_FILL
    add_child(container)
    
    # Create a hover preview panel that will follow the mouse
    hoveredPreview = cardPreviewScene.instantiate()
    hoveredPreview.visible = false
    add_child(hoveredPreview)

func update_hand(hand: Array):
    clear_cards()
    
    # Calculate card sizes based on hand size and screen width
    var card_size = calculate_card_size(hand.size())
    
    for card in hand:
        add_card_display(card, card_size)

func calculate_card_size(hand_size: int) -> Vector2:
    # Get screen dimensions
    var screen_width = get_viewport_rect().size.x
    var screen_height = get_viewport_rect().size.y
    
    var max_hand_width = screen_width * MAX_HAND_WIDTH_RATIO
    var width_per_card = max_hand_width / max(hand_size, 1)
    
    # Ensure minimum size and preserve aspect ratio
    var card_width = clamp(width_per_card - CARD_MARGIN, 80, BASE_CARD_WIDTH)
    var card_height = card_width * (BASE_CARD_HEIGHT / BASE_CARD_WIDTH)
    
    # Ensure cards don't extend off the bottom of the screen
    var max_height = screen_height * 0.4  # Use at most 40% of screen height
    if card_height > max_height:
        card_height = max_height
        card_width = card_height * (BASE_CARD_WIDTH / BASE_CARD_HEIGHT)
    
    return Vector2(card_width, card_height)

func add_card_display(card, card_size: Vector2 = Vector2(BASE_CARD_WIDTH, BASE_CARD_HEIGHT)):
    # Create a container for the card
    var cardContainer = PanelContainer.new()
    cardContainer.custom_minimum_size = card_size
    
    # Create a stylebox for selection highlighting
    var style = StyleBoxFlat.new()
    style.bg_color = Utils.DARK_CELL
    style.corner_radius_top_left = 5
    style.corner_radius_top_right = 5
    style.corner_radius_bottom_left = 5
    style.corner_radius_bottom_right = 5
    cardContainer.add_theme_stylebox_override("panel", style)
    
    # Create compact card display
    var compact_card = CompactCardDisplay.new()
    compact_card.set_anchors_preset(Control.PRESET_FULL_RECT)
    compact_card.mouse_filter = Control.MOUSE_FILTER_PASS
    
    # Add to container
    cardContainer.add_child(compact_card)
    compact_card.set_card(card)
    
    # Connect signals
    cardContainer.gui_input.connect(func(event): _on_card_clicked(event, card))
    cardContainer.mouse_entered.connect(func(): _on_card_mouse_entered(card))
    cardContainer.mouse_exited.connect(func(): _on_card_mouse_exited())
    
    # Add to hand container
    container.add_child(cardContainer)
    
    # Add to display list
    cardDisplays.append({
        "panel": cardContainer,
        "card": card
    })

func _on_card_clicked(event: InputEvent, card: Card):
    if event is InputEventMouseButton and event.pressed:
        if selectedCard == null || selectedCard.id != card.id:
            selectedCard = card
            container.emit_signal("card_pressed", card)
        elif selectedCard.id == card.id:
            selectedCard = null
        highlight_selectedCard(selectedCard)

func _on_card_mouse_entered(    card: Card):
    # Show card preview when hovering
    # print("_on_card_mouse_entered")
    currently_hovered_card = card
    hoveredPreview.preview_card(card)
    hoveredPreview.visible = true
    
    # Position it above the hand area
    var mouse_pos = get_viewport().get_mouse_position()
    hoveredPreview.position = Vector2(mouse_pos.x - hoveredPreview.size.x/2, mouse_pos.y - hoveredPreview.size.y - 20)
    
    # Make sure it's visible within screen bounds
    hoveredPreview.position.x = clamp(hoveredPreview.position.x, 10, get_viewport_rect().size.x - hoveredPreview.size.x - 10)
    hoveredPreview.position.y = clamp(hoveredPreview.position.y, 10, get_viewport_rect().size.y - hoveredPreview.size.y - 10)
    
    isPreviewVisible = true

func _on_card_mouse_exited():
    # Only hide the preview after a delay and if we're not hovering over a new card
    var exited_card = currently_hovered_card
    currently_hovered_card = null
    
    # Wait a bit before hiding
    await get_tree().create_timer(0.2).timeout
    
    # Only hide if we're not hovering over a new card
    if exited_card == currently_hovered_card or currently_hovered_card == null:
        hoveredPreview.visible = false
        isPreviewVisible = false

func _process(delta):
    # If preview is visible, update its position to follow the mouse
    if isPreviewVisible:
        var mouse_pos = get_viewport().get_mouse_position()
        hoveredPreview.position = Vector2(mouse_pos.x - hoveredPreview.size.x/2, mouse_pos.y - hoveredPreview.size.y - 20)
        hoveredPreview.position.x = clamp(hoveredPreview.position.x, 10, get_viewport_rect().size.x - hoveredPreview.size.x - 10)
        hoveredPreview.position.y = clamp(hoveredPreview.position.y, 10, get_viewport_rect().size.y - hoveredPreview.size.y - 10)

func highlight_selectedCard(selected: Card) -> void:
    for card_data in cardDisplays:
        var panel = card_data.panel
        var compact_card = panel.get_child(0) as CompactCardDisplay
        
        if selected && card_data.card.id == selected.id:
            
            # Apply highlighting to the CompactCardDisplay
            if compact_card:
                compact_card.set_selected(true)
        else:
            # Reset highlighting
            if compact_card:
                compact_card.set_selected(false)

func get_card_by_uuid(uuid: String) -> Card:
    for card_data in cardDisplays:
        if card_data.card.id == uuid:
            return card_data.card
    return null

func getSelectedCard() -> Card:
    return selectedCard

func clear_cards():
    for card_data in cardDisplays:
        card_data.panel.queue_free()
    cardDisplays.clear()
    selectedCard = null