# card_data.gd
extends Resource
class_name CardData

enum Type { ATTACK, SKILL, POWER }
enum Target { ENEMY, SELF, ALL_ENEMIES }

@export var id: String
@export var name: String
@export_multiline var description: String
@export var cost: int
@export var type: Type
@export var target_type: Target
@export var icon: Texture2D
@export var effect_script: Script # Custom logic per card

# deck_manager.gd
var draw_pile: Array[CardData] = []
var hand: Array[CardData] = []
var discard_pile: Array[CardData] = []

func draw_cards(amount: int) -> void:
    for i in amount:
        if draw_pile.is_empty():
            reshuffle_discard()
            
        if draw_pile.is_empty(): 
            break # No cards left
            
        var card = draw_pile.pop_back()
        hand.append(card)
        card_drawn.emit(card)

func reshuffle_discard() -> void:
    draw_pile.append_array(discard_pile)
    discard_pile.clear()
    draw_pile.shuffle()

# card_ui.gd
extends Control

var card_data: CardData
var start_pos: Vector2
var is_dragging: bool = false

func _gui_input(event: InputEvent) -> void:
    if event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_LEFT:
        if event.pressed:
            start_drag()
        else:
            end_drag()

func _process(delta: float) -> void:
    if is_dragging:
        global_position = get_global_mouse_position() - size / 2
    else:
        # Hover effect or return to hand position
        pass

func play_card(card: CardData, target: Node) -> void:
    if current_energy < card.cost:
        show_error("Not enough energy")
        return
        
    current_energy -= card.cost
    
    # Execute effect
    var effect = card.effect_script.new()
    effect.execute(target)
    
    move_to_discard(card)

func update_hand_visuals() -> void:
    var center_x = screen_width / 2
    var radius = 1000.0
    var angle_step = 5.0
    
    for i in hand_visuals.size():
        var card = hand_visuals[i]
        var angle = deg_to_rad((i - hand_visuals.size() / 2.0) * angle_step)
        var target_pos = Vector2(
            center_x + sin(angle) * radius,
            screen_height + cos(angle) * radius
        )
        card.target_rotation = angle
        card.target_position = target_pos