--[[
	
	xMerchant
	Copyright (c) 2011, Nils Ruesch
	All rights reserved.
	
]]

local addonName, xm = ...;
local L = xm.L;
local buttons = {};
local knowns = {};
local errors = {};
local currencies = {};
local merchantItems = {};
local searching = "";
local repairspam = false;
local RECIPE = select(7, GetAuctionItemClasses());
local REQUIRES_LEVEL = L["Requires Level (%d+)"];
local LEVEL = L["Level %d"];
local REQUIRES_REPUTATION = L["Requires .+ %- (.+)"];
local REQUIRES_SKILL = L["Requires (.+) %((%d+)%)"];
local SKILL = L["%1$s (%2$d)"];
local REQUIRES = L["Requires (.+)"];
local AUTO_REPAIR = L["Auto repair"];
local tooltip = CreateFrame("GameTooltip", "NuuhMerchantTooltip", UIParent, "GameTooltipTemplate");

local function GetError(link, isRecipe)
	if ( not link ) then
		return false;
	end
	
	local id = link:match("item:(%d+)");
	if ( errors[id] ) then
		return errors[id];
	end
	
	tooltip:SetOwner(UIParent, "ANCHOR_NONE");
	tooltip:SetHyperlink(link);
	
	local errormsg = "";
	for i=2, tooltip:NumLines(), 1 do
		local text = _G["NuuhMerchantTooltipTextLeft"..i];
		local r, g, b = text:GetTextColor();
		local gettext = text:GetText();
		if ( gettext and r >= 0.9 and g <= 0.2 and b <= 0.2 and gettext ~= RETRIEVING_ITEM_INFO ) then
			if ( errormsg ~= "" ) then
				errormsg = errormsg..", ";
			end
			
			local level = gettext:match(REQUIRES_LEVEL);
			if ( level ) then
				errormsg = errormsg..LEVEL:format(level);
			end
			
			local reputation = gettext:match(REQUIRES_REPUTATION);
			if ( reputation ) then
				errormsg = errormsg..reputation;
			end
			
			local skill, slevel = gettext:match(REQUIRES_SKILL);
			if ( skill and slevel ) then
				errormsg = errormsg..SKILL:format(skill, slevel);
			end
			
			local requires = gettext:match(REQUIRES);
			if ( not level and not reputation and not skill and requires ) then
				errormsg = errormsg..requires;
			end
			
			if ( not level and not reputation and not skill and not requires ) then
				if ( errormsg ~= "" ) then
					errormsg = gettext..", "..errormsg;
				else
					errormsg = errormsg..gettext;
				end
			end
		end
		
		local text = _G["NuuhMerchantTooltipTextRight"..i];
		local r, g, b = text:GetTextColor();
		local gettext = text:GetText();
		if ( gettext and r >= 0.9 and g <= 0.2 and b <= 0.2 ) then
			if ( errormsg ~= "" ) then
				errormsg = errormsg..", ";
			end
			errormsg = errormsg..gettext;
		end
		
		if ( isRecipe and i == 5 ) then
			break;
		end
	end
	
	if ( errormsg == "" ) then
		return false;
	end
	
	errors[id] = errormsg;
	return errormsg;
end

local function GetKnown(link)
	if ( not link ) then
		return false;
	end
	
	local id = link:match("item:(%d+)");
	if ( knowns[id] ) then
		return true;
	end
	
	tooltip:SetOwner(UIParent, "ANCHOR_NONE");
	tooltip:SetHyperlink(link);
	
	for i=1, tooltip:NumLines() do
		if ( _G["NuuhMerchantTooltipTextLeft"..i]:GetText() == ITEM_SPELL_KNOWN ) then
			knowns[id] = true;
			return true;
		end
	end
	
	return false;
end

local function CurrencyUpdate()
	wipe(currencies);
	
	for i=1, GetCurrencyListSize(), 1 do
		local name, isHeader, _, _, _, count, _, _, itemID = GetCurrencyListInfo(i);
		if ( not isHeader and itemID ) then
			currencies[tonumber(itemID)] = count;
		elseif ( not isHeader and not itemID ) then
			currencies[name] = count;
		end
	end
	
	for i=INVSLOT_FIRST_EQUIPPED, INVSLOT_LAST_EQUIPPED, 1 do
		local itemID = GetInventoryItemID("player", i);
		if ( itemID ) then
			currencies[tonumber(itemID)] = 1;
		end
	end
	
	for bagID=0, NUM_BAG_SLOTS, 1 do
		local numSlots = GetContainerNumSlots(bagID);
		for slotID=1, numSlots, 1 do
			local itemID = GetContainerItemID(bagID, slotID);
			if ( itemID ) then
				local count = select(2, GetContainerItemInfo(bagID, slotID));
				itemID = tonumber(itemID);
				local currency = currencies[itemID];
				if ( currency ) then
					currencies[itemID] = currency+count;
				else
					currencies[itemID] = count;
				end
			end
		end
	end
end

local function AltCurrencyFrame_Update(item, texture, cost, itemID, currencyName)
	if ( itemID ~= 0 or currencyName) then
		local currency = currencies[itemID] or currencies[currencyName];
		if ( currency and currency < cost or not currency ) then
			item.count:SetTextColor(1, 0, 0);
		else
			item.count:SetTextColor(1, 1, 1);
		end
	end
	
	item.count:SetText(cost);
	item.icon:SetTexture(texture);
	local iconWidth = 17;
	item.icon:SetSize(iconWidth, iconWidth);
	item:SetSize(item.count:GetWidth()+iconWidth+4, item.count:GetHeight()+4);
end

local function UpdateAltCurrency(button, index)
	local lastFrame;
	local itemCount = GetMerchantItemCostInfo(index);
	
	if ( itemCount > 0 ) then
		for i=1, MAX_ITEM_COST, 1 do
			local itemTexture, itemValue, itemLink, currencyName = GetMerchantItemCostItem(index, i);
			local item = button.item[i];
			item.index = index;
			item.item = i;
			if( currencyName ) then
				item.pointType = "CurrencyName";
				item.itemLink = currencyName;
			else
				item.pointType = "ItemLink";
				item.itemLink = itemLink;
			end
			
			local itemID = tonumber((itemLink or "item:0"):match("item:(%d+)"));
			AltCurrencyFrame_Update(item, itemTexture, itemValue, itemID, currencyName);

			if ( not itemTexture ) then
				item:Hide();
			else
				lastFrame = item;
				item:Show();
			end
		end
	else
		for i=1, MAX_ITEM_COST, 1 do
			button.item[i]:Hide();
		end
	end
	
	if ( lastFrame ) then
		button.money:SetPoint("RIGHT", lastFrame, "LEFT", -2, 0);
	else
		button.money:SetPoint("RIGHT", -2, 0);
	end
end

local function MerchantUpdate()
	local self = NuuhMerchantFrame;
	if ( not next(merchantItems) ) then
		for i=1, GetMerchantNumItems(), 1 do
			local name, texture, price, quantity, numAvailable, isUsable, extendedCost = GetMerchantItemInfo(i);
			local link = GetMerchantItemLink(i);
			local _, itemRarity, itemType, itemSubType, itemEquipLoc;
			if ( link ) then
				_, _, itemRarity, _, _, itemType, itemSubType, _ , itemEquipLoc = GetItemInfo(link);
			end
			
			local add = true;
			for string, value in next, xMerchantCharDB.Filter do
				if ( (string == itemSubType or string == _G[itemEquipLoc]) and not value ) then
					add = false;
					break;
				end
			end
			
			if ( add ) then
				local alpha = 0.3;
				if ( searching == "" or searching == SEARCH:lower() or name:lower():match(searching) or tostring(itemRarity):lower():match(searching) or _G["ITEM_QUALITY"..tostring(itemRarity).."_DESC"]:lower():match(searching) or itemType:lower():match(searching) or itemSubType:lower():match(searching) ) then
					alpha = 1;
				elseif ( self.tooltipsearching ) then
					tooltip:SetOwner(UIParent, "ANCHOR_NONE");
					tooltip:SetHyperlink(link);
					for i=1, tooltip:NumLines() do
						if ( _G["NuuhMerchantTooltipTextLeft"..i]:GetText():lower():match(searching) ) then
							alpha = 1;
							break;
						end
					end
				end
				
				if ( alpha == 1 ) then
					table.insert(merchantItems, {
						id = i,
						name = name,
						link = link,
						texture = texture,
						price = price,
						quantity = quantity,
						numAvailable = numAvailable,
						isUsable = isUsable,
						extendedCost = extendedCost,
						itemRarity = itemRarity,
						itemType = itemType,
						itemSubType = itemSubType
					});
				end
			end
		end
	end

	local numMerchantItems = #merchantItems;
	FauxScrollFrame_Update(self.scrollframe, numMerchantItems, 10, 29.4, nil, nil, nil, nil, nil, nil, 1);
	for i=1, 10, 1 do
		local offset = i+FauxScrollFrame_GetOffset(self.scrollframe);
		local button = buttons[i];
		button.hover = nil;
		if ( offset <= numMerchantItems ) then
			local merchantItem = merchantItems[offset];
			local name, texture, price, quantity, numAvailable, isUsable, extendedCost = merchantItem.name, merchantItem.texture, merchantItem.price, merchantItem.quantity, merchantItem.numAvailable, merchantItem.isUsable, merchantItem.exendedCost;
			local link = merchantItem.link;
			local r, g, b = 0.5, 0.5, 0.5;
			local itemRarity, itemType, itemSubType;
			if ( link ) then
				itemRarity, itemType, itemSubType = merchantItem.itemRarity, merchantItem.itemType, merchantItem.itemSubType;
				r, g, b = GetItemQualityColor(itemRarity);
				button.itemname:SetTextColor(r, g, b);
				button.iteminfo:SetText(itemSubType:gsub("%(OBSOLETE%)", ""));
			end
			button.itemname:SetText((numAvailable >= 0 and "|cffffffff["..numAvailable.."]|r " or "")..(quantity > 1 and "|cffffffff"..quantity.."x|r " or "")..(name or "|cffff0000"..RETRIEVING_ITEM_INFO));
			button.icon:SetTexture(texture);
			
			UpdateAltCurrency(button, merchantItem.id);
			if ( extendedCost and price <= 0 ) then
				button.price = nil;
				button.extendedCost = true;
				button.money:SetText("");
			elseif ( extendedCost and price > 0 ) then
				button.price = price;
				button.extendedCost = true;
				button.money:SetText(GetCoinTextureString(price));
			else
				button.price = price;
				button.extendedCost = nil;
				button.money:SetText(price > 0 and GetCoinTextureString(price) or "");
			end
			
			if ( GetMoney() < price ) then
				button.money:SetTextColor(1, 0, 0);
			else
				button.money:SetTextColor(1, 1, 1);
			end
			
			if ( numAvailable == 0 ) then
				button.highlight:SetVertexColor(0.5, 0.5, 0.5, 0.5);
				button.highlight:Show();
				button.isShown = 1;
			elseif ( not isUsable ) then
				button.highlight:SetVertexColor(1, 0.2, 0.2, 0.5);
				button.highlight:Show();
				button.isShown = 1;
				
				local errors = GetError(link, itemType and itemType == RECIPE);
				if ( errors ) then
					button.iteminfo:SetText("|cffff0000"..errors.."|r");
				end
			elseif ( itemType and itemType == RECIPE and not GetKnown(link) ) then
				button.highlight:SetVertexColor(0.2, 1, 0.2, 0.5);
				button.highlight:Show();
				button.isShown = 1;
			else
				button.highlight:SetVertexColor(r, g, b, 0.5);
				button.highlight:Hide();
				button.isShown = nil;
			end
			
			button.r = r;
			button.g = g;
			button.b = b;
			button.link = link;
			button.hasItem = true;
			button.texture = texture;
			button:SetID(merchantItem.id);
			button:Show();
		else
			button.price = nil;
			button.hasItem = nil;
			button:Hide();
		end
		if ( button.hasStackSplit == 1 ) then
			StackSplitFrame:Hide();
		end
	end
end

local function OnVerticalScroll(self, offset)
	FauxScrollFrame_OnVerticalScroll(self, offset, 29.4, MerchantUpdate);
end

local function OnClick(self, button)
	if ( IsModifiedClick() ) then
		MerchantItemButton_OnModifiedClick(self, button);
	else
		MerchantItemButton_OnClick(self, button);
	end
end

local function OnEnter(self)
	if ( self.isShown and not self.hover ) then
		self.oldr, self.oldg, self.oldb, self.olda = self.highlight:GetVertexColor();
		self.highlight:SetVertexColor(self.r, self.g, self.b, self.olda);
		self.hover = 1;
	else
		self.highlight:Show();
	end
	MerchantItemButton_OnEnter(self);
end

local function OnLeave(self)
	if ( self.isShown ) then
		self.highlight:SetVertexColor(self.oldr, self.oldg, self.oldb, self.olda);
		self.hover = nil;
	else
		self.highlight:Hide();
	end
	GameTooltip:Hide();
	ResetCursor();
	MerchantFrame.itemHover = nil;
end

local function SplitStack(button, split)
	if ( button.extendedCost ) then
		MerchantFrame_ConfirmExtendedItemCost(button, split)
	elseif ( split > 0 ) then
		BuyMerchantItem(button:GetID(), split);
	end
end

local function Item_OnClick(self)
	HandleModifiedItemClick(self.itemLink);
end

local function Item_OnEnter(self)
	local parent = self:GetParent();
	if ( parent.isShown and not parent.hover ) then
		parent.oldr, parent.oldg, parent.oldb, parent.olda = parent.highlight:GetVertexColor();
		parent.highlight:SetVertexColor(parent.r, parent.g, parent.b, parent.olda);
		parent.hover = 1;
	else
		parent.highlight:Show();
	end
	
	GameTooltip:SetOwner(self, "ANCHOR_RIGHT");
	GameTooltip:SetMerchantCostItem(parent:GetID(), self:GetID());
	
	if ( IsModifiedClick("DRESSUP") ) then
		ShowInspectCursor();
	else
		ResetCursor();
	end
end

local function Item_OnLeave(self)
	local parent = self:GetParent();
	if ( parent.isShown ) then
		parent.highlight:SetVertexColor(parent.oldr, parent.oldg, parent.oldb, parent.olda);
		parent.hover = nil;
	else
		parent.highlight:Hide();
	end
	GameTooltip:Hide();
	ResetCursor();
end

local function OnEvent(self, event, ...)
	if ( addonName == select(1, ...) ) then
		self:UnregisterEvent("ADDON_LOADED");
		
		local x = 0;
		if ( IsAddOnLoaded("SellOMatic") ) then
			x = 20;
		elseif ( IsAddOnLoaded("DropTheCheapestThing") ) then
			x = 14;
		end
		if ( x ~= 0 ) then
			self.search:SetWidth(200-x);
			self.search:SetPoint("BOTTOM", self, "TOP", 25-x, 9);
		end
		
		xMerchantDB = xMerchantDB or {
			FONT_MODE = 3
		};
		xMerchantCharDB = xMerchantCharDB or {
			AUTO_REPAIR = false,
			Filter = {}
		};
		
		if ( xMerchantDB.FONT_MODE == 2 or xMerchantDB.FONT_MODE == 3 ) then
			for i=1, 10, 1 do
				local button = buttons[i];
				button.itemname:SetFontObject("GameFontHighlight");
				if ( xMerchantDB.FONT_MODE == 2 ) then
					button.iteminfo:SetFontObject("GameFontDisable");
				end
			end
		end
		return;
	end
end

local frame = CreateFrame("Frame", "NuuhMerchantFrame", MerchantFrame);
frame:RegisterEvent("ADDON_LOADED");
frame:SetScript("OnEvent", OnEvent);
frame:SetSize(295, 294);
frame:SetPoint("TOPLEFT", 21, -76);

local function CheckBox_OnEnter(self)
	self.text:SetTextColor(1, 1, 1);
end

local function CheckBox_OnLeave(self)
	self.text:SetTextColor(1, 0.82, 0);
end

local function CheckBox_OnShow(self)
	self:SetChecked(xMerchantCharDB.AUTO_REPAIR);
end

local function CheckBox_OnClick(self)
	if ( self:GetChecked() ) then
		xMerchantCharDB.AUTO_REPAIR = true;
		PlaySound("igMainMenuOptionCheckBoxOn");
		local repairAllCost, canRepair = GetRepairAllCost();
		if ( canRepair and repairAllCost > 0 and not repairspam ) then
			print("|cffff00ffNuuh|r|cffffffffMerchant|r:\n"..REPAIR_ALL_ITEMS.."\n"..GetCoinTextureString(repairAllCost));
			RepairAllItems();
			repairspam = true;
		end
	else
		xMerchantCharDB.AUTO_REPAIR = false;
		PlaySound("igMainMenuOptionCheckBoxOff");
	end
end

local autorepair = CreateFrame("CheckButton", "$parentAutoRepairCheckBox", frame, "OptionsCheckButtonTemplate");
frame.autorepair = autorepair;
autorepair:SetPoint("BOTTOMLEFT", MerchantFrame, 18, 62);
local text = _G[autorepair:GetName().."Text"];
autorepair.text = text;
text:SetText(AUTO_REPAIR);
text:SetTextColor(1, 0.82, 0);
text:SetJustifyH("LEFT");
text:ClearAllPoints();
text:SetPoint("LEFT", autorepair, "RIGHT");
autorepair:SetHitRectInsets(0, -(text:GetWidth()+5), 0, 0);
autorepair:SetScript("OnEnter", CheckBox_OnEnter);
autorepair:SetScript("OnLeave", CheckBox_OnLeave);
autorepair:SetScript("OnShow", CheckBox_OnShow);
autorepair:SetScript("OnClick", CheckBox_OnClick);

local function OnTextChanged(self)
	searching = self:GetText():trim():lower();
	wipe(merchantItems);
	MerchantUpdate();
end

local function OnShow(self)
	self:SetText(SEARCH);
	searching = "";
	self:SetFontObject("GameFontDisable");
	self.icon:SetVertexColor(0.6, 0.6, 0.6);
end

local function OnEnterPressed(self)
	self:ClearFocus();
end

local function OnEscapePressed(self)
	self:ClearFocus();
	self:SetText(SEARCH);
	searching = "";
	self:SetFontObject("GameFontDisable");
	self.icon:SetVertexColor(0.6, 0.6, 0.6);
end

local function OnEditFocusLost(self)
	self:HighlightText(0, 0);
	if ( strtrim(self:GetText()) == "" ) then
		self:SetText(SEARCH);
		searching = "";
		self:SetFontObject("GameFontDisable");
		self.icon:SetVertexColor(0.6, 0.6, 0.6);
	end
end

local function OnEditFocusGained(self)
	self:HighlightText();
	if ( self:GetText():trim():lower() == SEARCH:lower() ) then
		self:SetText("");
		self:SetFontObject("ChatFontSmall");
		self.icon:SetVertexColor(1.0, 1.0, 1.0);
	end
end

local search = CreateFrame("EditBox", "$parentSearch", frame, "InputBoxTemplate");
frame.search = search;
search:SetSize(200, 24);
search:SetPoint("BOTTOM", frame, "TOP", 25, 9);
search:SetAutoFocus(false);
search:SetScript("OnTextChanged", OnTextChanged);
search:SetScript("OnShow", OnShow);
search:SetScript("OnEnterPressed", OnEnterPressed);
search:SetScript("OnEscapePressed", OnEscapePressed);
search:SetScript("OnEditFocusLost", OnEditFocusLost);
search:SetScript("OnEditFocusGained", OnEditFocusGained);
search:SetTextInsets(16, 0, 0, 0);

local searchicon = search:CreateTexture("$parentIcon", "OVERLAY");
search.icon = searchicon;
searchicon:SetSize(14, 14);
searchicon:SetPoint("LEFT", 0, -2);
searchicon:SetTexture("Interface\\Common\\UI-Searchbox-Icon");

local function Search_OnClick(self)
	if ( self:GetChecked() ) then
		PlaySound("igMainMenuOptionCheckBoxOn");
		frame.tooltipsearching = 1;
	else
		PlaySound("igMainMenuOptionCheckBoxOff");
		frame.tooltipsearching = nil;
	end
	if ( searching ~= "" and searching ~= SEARCH:lower() ) then
		wipe(merchantItems);
		MerchantUpdate();
	end
end

local function Search_OnEnter(self)
	GameTooltip:SetOwner(self, "ANCHOR_RIGHT");
	GameTooltip:SetText(L["To browse item tooltips, too"]);
end

local tooltipsearching = CreateFrame("CheckButton", "$parentTooltipSearching", frame, "InterfaceOptionsSmallCheckButtonTemplate");
search.tooltipsearching = tooltipsearching;
tooltipsearching:SetSize(21, 21);
tooltipsearching:SetPoint("LEFT", search, "RIGHT", 5, 0);
tooltipsearching:SetHitRectInsets(0, 0, 0, 0);
tooltipsearching:SetScript("OnClick", Search_OnClick);
tooltipsearching:SetScript("OnEnter", Search_OnEnter);
tooltipsearching:SetScript("OnLeave", GameTooltip_Hide);
tooltipsearching:SetChecked(false);

local scrollframe = CreateFrame("ScrollFrame", "NuuhMerchantScrollFrame", frame, "FauxScrollFrameTemplate");
frame.scrollframe = scrollframe;
scrollframe:SetSize(295, 298);
scrollframe:SetPoint("TOPLEFT", MerchantFrame, 22, -74);
scrollframe:SetScript("OnVerticalScroll", OnVerticalScroll);

local top = frame:CreateTexture("$parentTop", "ARTWORK");
frame.top = top
top:SetSize(31, 256);
top:SetPoint("TOPRIGHT", 30, 6);
top:SetTexture("Interface\\PaperDollInfoFrame\\UI-Character-ScrollBar");
top:SetTexCoord(0, 0.484375, 0, 1);

local bottom = frame:CreateTexture("$parentBottom", "ARTWORK");
frame.bottom = bottom
bottom:SetSize(31, 108);
bottom:SetPoint("BOTTOMRIGHT", 30, -6);
bottom:SetTexture("Interface\\PaperDollInfoFrame\\UI-Character-ScrollBar");
bottom:SetTexCoord(0.515625, 1, 0, 0.421875);

for i=1, 10, 1 do
	local button = CreateFrame("Button", "NuuhMerchantFrame"..i, frame);
	button:SetSize(frame:GetWidth(), 29.4);
	if ( i == 1 ) then
		button:SetPoint("TOPLEFT", 0, -1);
	else
		button:SetPoint("TOP", buttons[i-1], "BOTTOM");
	end
	button:RegisterForClicks("LeftButtonUp","RightButtonUp");
	button:RegisterForDrag("LeftButton");
	button.UpdateTooltip = OnEnter;
	button.SplitStack = SplitStack;
	button:SetScript("OnClick", OnClick);
	button:SetScript("OnDragStart", MerchantItemButton_OnClick);
	button:SetScript("OnEnter", OnEnter);
	button:SetScript("OnLeave", OnLeave);
	button:SetScript("OnHide", OnHide);
	
	local highlight = button:CreateTexture("$parentHighlight", "BACKGROUND"); -- better highlight
	button.highlight = highlight;
	highlight:SetAllPoints();
	highlight:SetBlendMode("ADD");
	highlight:SetTexture("Interface\\Buttons\\UI-Listbox-Highlight2");
	highlight:Hide();
	
	local itemname = button:CreateFontString("ARTWORK", "$parentItemName", "GameFontHighlightSmall");
	button.itemname = itemname;
	itemname:SetPoint("TOPLEFT", 30.4, -3);
	itemname:SetJustifyH("LEFT");
	
	local iteminfo = button:CreateFontString("ARTWORK", "$parentItemInfo", "GameFontDisableSmall");
	button.iteminfo = iteminfo;
	iteminfo:SetPoint("BOTTOMLEFT", 30.4, 3);
	iteminfo:SetJustifyH("LEFT");
	
	local icon = button:CreateTexture("$parentIcon", "BORDER");
	button.icon = icon;
	icon:SetSize(25.4, 25.4);
	icon:SetPoint("LEFT", 2, 0);
	icon:SetTexture("Interface\\Icons\\temp");
	
	local money = button:CreateFontString("ARTWORK", "$parentMoney", "GameFontHighlight");
	button.money = money;
	money:SetPoint("RIGHT", -2, 0);
	money:SetJustifyH("RIGHT");
	itemname:SetPoint("RIGHT", money, "LEFT", -2, 0);
	iteminfo:SetPoint("RIGHT", money, "LEFT", -2, 0);
	
	button.item = {};
	for j=1, MAX_ITEM_COST, 1 do
		local item = CreateFrame("Button", "$parentItem"..j, button);
		button.item[j] = item;
		item:SetID(j);
		item:SetSize(17, 17);
		if ( j == 1 ) then
			item:SetPoint("RIGHT", -2, 0);
		else
			item:SetPoint("RIGHT", button.item[j-1], "LEFT", -2, 0);
		end
		item:RegisterForClicks("LeftButtonUp","RightButtonUp");
		item:SetScript("OnClick", Item_OnClick);
		item:SetScript("OnEnter", Item_OnEnter);
		item:SetScript("OnLeave", Item_OnLeave);
		item.hasItem = true;
		item.UpdateTooltip = Item_OnEnter;
		
		local icon = item:CreateTexture("$parentIcon", "BORDER");
		item.icon = icon;
		icon:SetSize(17, 17);
		icon:SetPoint("RIGHT");
		
		local count = item:CreateFontString("ARTWORK", "$parentCount", "GameFontHighlight");
		item.count = count;
		count:SetPoint("RIGHT", icon, "LEFT", -2, 0);
	end
	
	buttons[i] = button;
end

local function Update()
	if ( MerchantFrame.selectedTab == 1 ) then
		for i=1, 12, 1 do
			_G["MerchantItem"..i]:Hide();
		end
		frame:Show();
		CurrencyUpdate();
		wipe(merchantItems);
		MerchantUpdate();
		
		if ( CanMerchantRepair() ) then
			local repairAllCost, canRepair = GetRepairAllCost();
			if ( canRepair and repairAllCost > 0 and xMerchantCharDB.AUTO_REPAIR and not repairspam ) then
				print("|cffff00ffNuuh|r|cffffffffMerchant|r:\n"..REPAIR_ALL_ITEMS.."\n"..GetCoinTextureString(repairAllCost));
				RepairAllItems();
				repairspam = true;
			end
			frame.autorepair:Show();
		else
			frame.autorepair:Hide();
		end
	else
		frame:Hide();
		for i=1, 12, 1 do
			_G["MerchantItem"..i]:Show();
		end
		if ( StackSplitFrame:IsShown() ) then
			StackSplitFrame:Hide();
		end
	end
end
hooksecurefunc("MerchantFrame_Update", Update);


local function OnHide()
	wipe(errors);
	wipe(currencies);
	wipe(merchantItems);
	repairspam = false;
end
MerchantFrame:HookScript("OnHide", OnHide);

MerchantBuyBackItem:ClearAllPoints();
MerchantBuyBackItem:SetPoint("BOTTOMLEFT", 189, 90);

for _, frame in next, { MerchantNextPageButton, MerchantPrevPageButton, MerchantPageText } do
	frame:Hide()
	frame.Show = function() end;
end