extends Panel;

const ItemClass = preload("res://Item.gd");
const ItemSlotClass = preload("res://ItemSlot.gd");
const TooltipClass = preload("res://Tooltip.gd");

const MAX_SLOTS = 45;

const itemImages = [
	preload("res://images/Ac_Ring05.png"),
	preload("res://images/A_Armor05.png"),
	preload("res://images/A_Armour02.png"),
	preload("res://images/A_Shoes03.png"),
	preload("res://images/C_Elm03.png"),
	preload("res://images/E_Wood02.png"),
	preload("res://images/P_Red02.png"),
	preload("res://images/W_Sword001.png"),
	preload("res://images/Ac_Necklace03.png"),
];

const itemDictionary = {
	0: {
		"itemName": "Capsule",
		"itemValue": 456,
		"itemIcon": itemImages[0],
		"slotType": Global.SlotType.SLOT_DEFAULT
	},
	1: {
		"itemName": "Cube",
		"itemValue": 832,
		"itemIcon": itemImages[7],
		"slotType": Global.SlotType.SLOT_DEFAULT
	}
};

var slotList = Array();

var holdingItem = null;
var itemOffset = Vector2(0, 0);

onready var tooltip = get_node("../Tooltip");
onready var characterPanel = get_node("../CharacterPanel");

func _ready():
	var slots = get_node("SlotsContainer/Slots");
	for _i in range(MAX_SLOTS):
		var slot = ItemSlotClass.new();
		slot.connect("mouse_entered", self, "mouse_enter_slot", [slot]);
		slot.connect("mouse_exited", self, "mouse_exit_slot", [slot]);
		slot.connect("gui_input", self, "slot_gui_input", [slot]);
		slotList.append(slot);
		slots.add_child(slot);

	for i in range(10):
		if i == 0:
			continue;
		var panelSlot = characterPanel.slots[i];
		if panelSlot:
			panelSlot.connect("mouse_entered", self, "mouse_enter_slot", [panelSlot]);
			panelSlot.connect("mouse_exited", self, "mouse_exit_slot", [panelSlot]);
			panelSlot.connect("gui_input", self, "slot_gui_input", [panelSlot]);

func mouse_enter_slot(_slot : ItemSlotClass):
	if _slot.item:
		tooltip.display(_slot.item, get_global_mouse_position());

func mouse_exit_slot(_slot : ItemSlotClass):
	if tooltip.visible:
		tooltip.hide();

func slot_gui_input(event : InputEvent, slot : ItemSlotClass):
	if event is InputEventMouseButton:
		if event.button_index == BUTTON_LEFT && event.pressed:
			if holdingItem:
				if slot.slotType != Global.SlotType.SLOT_DEFAULT:
					if canEquip(holdingItem, slot):
						if !slot.item:
							slot.equipItem(holdingItem, false);
							holdingItem = null;
						else:
							var tempItem = slot.item;
							slot.pickItem();
							tempItem.rect_global_position = event.global_position - itemOffset;
							slot.equipItem(holdingItem, false);
							holdingItem = tempItem;
				elif slot.item:
					var tempItem = slot.item;
					slot.pickItem();
					tempItem.rect_global_position = event.global_position - itemOffset;
					slot.putItem(holdingItem);
					holdingItem = tempItem;
				else:
					slot.putItem(holdingItem);
					holdingItem = null;
			elif slot.item:
				holdingItem = slot.item;
				itemOffset = event.global_position - holdingItem.rect_global_position;
				slot.pickItem();
				holdingItem.rect_global_position = event.global_position - itemOffset;
		elif event.button_index == BUTTON_RIGHT && !event.pressed:
			if slot.slotType != Global.SlotType.SLOT_DEFAULT:
				if slot.item:
					var freeSlot = getFreeSlot();
					if freeSlot:
						var item = slot.item;
						slot.removeItem();
						freeSlot.setItem(item);
			else:
				if slot.item:
					var itemSlotType = slot.item.slotType;
					var panelSlot = characterPanel.getSlotByType(slot.item.slotType);
					if itemSlotType == Global.SlotType.SLOT_RING:
						if panelSlot[0].item && panelSlot[1].item:
							var panelItem = panelSlot[0].item;
							panelSlot[0].removeItem();
							var slotItem = slot.item;
							slot.removeItem();
							slot.setItem(panelItem);
							panelSlot[0].setItem(slotItem);
							pass
						elif !panelSlot[0].item && panelSlot[1].item || !panelSlot[0].item && !panelSlot[1].item:
							var tempItem = slot.item;
							slot.removeItem();
							panelSlot[0].equipItem(tempItem);
						elif panelSlot[0].item && !panelSlot[1].item:
							var tempItem = slot.item;
							slot.removeItem();
							panelSlot[1].equipItem(tempItem);
							pass
					else:
						if panelSlot.item:
							var panelItem = panelSlot.item;
							panelSlot.removeItem();
							var slotItem = slot.item;
							slot.removeItem();
							slot.setItem(panelItem);
							panelSlot.setItem(slotItem);
						else:
							var tempItem = slot.item;
							slot.removeItem();
							panelSlot.equipItem(tempItem);

func _input(event : InputEvent):
	if holdingItem && holdingItem.picked:
		holdingItem.rect_global_position = event.global_position - itemOffset;

func getFreeSlot():
	for slot in slotList:
		if !slot.item:
			return slot;

func canEquip(item, slot):
	var ring = Global.SlotType.SLOT_RING;
	var ring2 = Global.SlotType.SLOT_RING2;
	return item.slotType == slot.slotType || item.slotType == ring && (slot.slotType == ring || slot.slotType == ring2);

func _on_SortRarityButton_pressed():
	var items = Array();
	for slot in slotList:
		if slot.item:
			items.append(slot.item);
			slot.removeItem();
	items.sort_custom(self, "sortItemsByRarity");
	for i in range(items.size()):
		var item = items[i];
		var slot = slotList[i];
		slot.setItem(item);

func sortItemsByRarity(itemA : ItemClass, itemB : ItemClass):
	return itemA.rarity > itemB.rarity;

func AddToInventory(itemName, itemIcon):
	var slot = getFreeSlot()
	if not slot:
		return false
	slot.setItem(ItemClass.new(itemName, itemIcon, null, 100, Global.SlotType.SLOT_DEFAULT))
	return true