--[[
	sortBtn.lua
		imagine a button that sorts your inventory in Bagnon, crazy am I right?!1
--]]

local Bagnon = LibStub('AceAddon-3.0'):GetAddon('Bagnon')
local L = LibStub('AceLocale-3.0'):GetLocale('Bagnon')
local SortBtn = Bagnon.Classy:New('Button')
Bagnon.SortBtn = SortBtn

local SIZE = 20
local NORMAL_TEXTURE_SIZE = 64 * (SIZE / 36)

-- Bag Sorter code from Sushi Regular
local moves = {};
local frame = CreateFrame("Frame");
local t = 0;
local current = nil;
local isGuildBankSort = false;

local function GetIDFromLink(link)
	return link and tonumber(string.match(link, "item:(%d+)"));
end

local function GetAscensionBankType()
	-- The logic doesn't work because GuildBankFrame is not loaded
	-- However the sort still works because it can sort using 'guild' as a fallback
	-- but personal and realm branches are never reached
	if GuildBankFrame and GuildBankFrame.IsPersonalBank then
		return "personal"
	elseif GuildBankFrame and GuildBankFrame.IsRealmBank then
		return "realm"
	else
		return "guild"
	end
end

local function DoGuildBankMoves()
	while (current ~= nil or #moves > 0) do
		if current ~= nil then
			if CursorHasItem() then
				local _, id = GetCursorInfo();
				if (current ~= nil and current.id == id) then
					if (current.sourcetab ~= nil) then
						PickupGuildBankItem(current.targettab, current.targetslot);
						local link = GetGuildBankItemLink(current.targettab, current.targetslot);
						if (current.id ~= GetIDFromLink(link)) then
							return;
						end
					end
				else
					moves = {};
					current = nil;
					frame:Hide();
					return;
				end
			else
				if (current.sourcetab ~= nil) then
					local link = GetGuildBankItemLink(current.targettab, current.targetslot);
					if (current.id ~= GetIDFromLink(link)) then
						return;
					end
				end
				current = nil;
			end
		else
			if (#moves > 0) then
				current = table.remove(moves, 1);
				if (current.sourcetab ~= nil) then
					PickupGuildBankItem(current.sourcetab, current.sourceslot);
					if CursorHasItem() == false then
						return;
					end
					PickupGuildBankItem(current.targettab, current.targetslot);
					local link = GetGuildBankItemLink(current.targettab, current.targetslot);
					if (current.id == GetIDFromLink(link)) then
						current = nil;
					else
						return;
					end
				end
			end
		end
	end
	frame:Hide();
	isGuildBankSort = false;
end

local function DoContainerMoves()
	while (current ~= nil or #moves > 0) do
		if current ~= nil then
			if CursorHasItem() then
				local _, id = GetCursorInfo();
				if (current ~= nil and current.id == id) then
					if (current.sourcebag ~= nil) then
						PickupContainerItem(current.targetbag, current.targetslot);
						local link = select(7, GetContainerItemInfo(current.targetbag, current.targetslot));
						if (current.id ~= GetIDFromLink(link)) then
							return;
						end
					end
				else
					moves = {};
					current = nil;
					frame:Hide();
					return;
				end
			else
				if (current.sourcebag ~= nil) then
					local link = select(7, GetContainerItemInfo(current.targetbag, current.targetslot));
					if (current.id ~= GetIDFromLink(link)) then
						return;
					end
				end
				current = nil;
			end
		else
			if (#moves > 0) then
				current = table.remove(moves, 1);
				if (current.sourcebag ~= nil) then
					PickupContainerItem(current.sourcebag, current.sourceslot);
					if CursorHasItem() == false then
						return;
					end
					PickupContainerItem(current.targetbag, current.targetslot);
					local link = select(7, GetContainerItemInfo(current.targetbag, current.targetslot));
					if (current.id == GetIDFromLink(link)) then
						current = nil;
					else
						return;
					end
				end

			end
		end
	end
	frame:Hide();
end

local function DoMoves()
	if isGuildBankSort then
		DoGuildBankMoves()
	else
		DoContainerMoves()
	end
end

local function CompareItems(lItem, rItem)
	if (rItem.id == nil) then
		return true;
	elseif (lItem.id == nil) then
		return false;
	elseif (lItem.class ~= rItem.class) then
		if lItem.class == "Weapon" or rItem.class == "Weapon" then
			return lItem.class == "Weapon"
		end
		return (lItem.class < rItem.class);
	elseif (lItem.subclass ~= rItem.subclass) then
		return (lItem.subclass < rItem.subclass);
	elseif (lItem.quality ~= rItem.quality) then
		return (lItem.quality > rItem.quality);
	elseif (lItem.name ~= rItem.name) then
		return (lItem.name < rItem.name);
	elseif ((lItem.count) ~= (rItem.count)) then
		return ((lItem.count) >= (rItem.count));
	else
		return true;
	end
end

local function BeginSort()
	current = nil;
	moves = {};
	ClearCursor();
end

local function SortGuildBankTab(tabItems)
	for i = 1, #tabItems, 1 do
		local lowest = i;
		for j = #tabItems, i + 1, -1 do
			if (CompareItems(tabItems[lowest], tabItems[j]) == false) then
				lowest = j;
			end
		end
		if (i ~= lowest) then
			local move = {};
			move.id = tabItems[lowest].id;
			move.name = tabItems[lowest].name;
			move.sourcetab = tabItems[lowest].tab;
			move.sourceslot = tabItems[lowest].slot;
			move.targettab = tabItems[i].tab;
			move.targetslot = tabItems[i].slot;
			table.insert(moves, move);

			local tmp = tabItems[i];
			tabItems[i] = tabItems[lowest];
			tabItems[lowest] = tmp;

			tmp = tabItems[i].slot;
			tabItems[i].slot = tabItems[lowest].slot;
			tabItems[lowest].slot = tmp;
			tmp = tabItems[i].tab;
			tabItems[i].tab = tabItems[lowest].tab;
			tabItems[lowest].tab = tmp;
		end
	end
end

local function SortBag(bag)
	for i = 1, #bag, 1 do
		local lowest = i;
		for j = #bag, i + 1, -1 do
			if (CompareItems(bag[lowest], bag[j]) == false) then
				lowest = j;
			end
		end
		if (i ~= lowest) then
			-- store move
			local move = {};
			move.id = bag[lowest].id;
			move.name = bag[lowest].name;
			move.sourcebag = bag[lowest].bag;
			move.sourcetab = bag[lowest].tab;
			move.sourceslot = bag[lowest].slot;
			move.targetbag = bag[i].bag;
			move.targettab = bag[i].tab;
			move.targetslot = bag[i].slot;
			table.insert(moves, move);

			-- swap items
			local tmp = bag[i];
			bag[i] = bag[lowest];
			bag[lowest] = tmp;

			-- swap slots
			tmp = bag[i].slot;
			bag[i].slot = bag[lowest].slot;
			bag[lowest].slot = tmp;
			tmp = bag[i].bag;
			bag[i].bag = bag[lowest].bag;
			bag[lowest].bag = tmp;
			tmp = bag[i].tab;
			bag[i].tab = bag[lowest].tab;
			bag[lowest].tab = tmp;
		end
	end
end

local function CreateBagFromID(bagID)
	local items = GetContainerNumSlots(bagID);
	local bag = {};

	for i = 1, items, 1 do
		local item = {};
		local _, count, _, _, _, _, link = GetContainerItemInfo(bagID, i);
		item.bag = bagID;
		item.slot = i;
		item.name = "<EMPTY>";
		item.id = GetIDFromLink(link);
		if (item.id ~= nil) then
			item.count = count;
			item.name, _, item.quality, _, _, item.class, item.subclass, _, item.type, _, item.price = GetItemInfo(item.id);
		end
		table.insert(bag, item);
	end
	return bag;
end

local function CreateGuildBankTabItems(tabID)
	local items = {};
	local numSlots = 98;

	for i = 1, numSlots, 1 do
		local item = {};
		local texture, count, locked = GetGuildBankItemInfo(tabID, i);
		local link = GetGuildBankItemLink(tabID, i);

		item.tab = tabID;
		item.slot = i;
		item.name = "<EMPTY>";
		item.id = GetIDFromLink(link);
		if (item.id ~= nil) then
			item.count = count or 1;
			item.name, _, item.quality, _, _, item.class, item.subclass, _, item.type, _, item.price = GetItemInfo(item.id);
		end
		table.insert(items, item);
	end
	return items;
end

frame:SetScript("OnUpdate", function()
	t = t + arg1;
	if t > 0.03 then
		t = 0
		DoMoves();
	end
end)
frame:Hide();
--

--[[ Constructor ]] --
function SortBtn:New(frameID, parent)
	local b = self:Bind(CreateFrame('Button', nil, parent))
	b:SetWidth(SIZE)
	b:SetHeight(SIZE)
	b:RegisterForClicks('anyUp')

	local nt = b:CreateTexture()
	nt:SetTexture([[Interface\Buttons\UI-Quickslot2]])
	nt:SetWidth(NORMAL_TEXTURE_SIZE)
	nt:SetHeight(NORMAL_TEXTURE_SIZE)
	nt:SetPoint('CENTER', 0, -1)
	b:SetNormalTexture(nt)

	local pt = b:CreateTexture()
	pt:SetTexture([[Interface\Buttons\UI-Quickslot-Depress]])
	pt:SetAllPoints(b)
	b:SetPushedTexture(pt)

	local ht = b:CreateTexture()
	ht:SetTexture([[Interface\Buttons\ButtonHilight-Square]])
	ht:SetAllPoints(b)
	b:SetHighlightTexture(ht)

	local icon = b:CreateTexture()
	icon:SetAllPoints(b)
	icon:SetTexture([[Interface\Icons\ability_racial_bagoftricks]])

	b:SetScript('OnClick', b.OnClick)
	b:SetScript('OnEnter', b.OnEnter)
	b:SetScript('OnLeave', b.OnLeave)
	b:SetFrameID(frameID)

	return b
end

--[[ Frame Events ]] --
function SortBtn:OnClick()
	local bags = {};

	if self.frameID == "inventory" then
		isGuildBankSort = false;
		for i = 0, NUM_BAG_FRAMES, 1 do
			local bag = CreateBagFromID(i);
			local type = select(2, GetContainerNumFreeSlots(i));
			if type == nil then
				type = "ALL"
			else
				type = tostring(type);
			end
			if bags[type] == nil then
				bags[type] = bag;
			else
				for j = 1, #bag, 1 do
					table.insert(bags[type], bag[j]);
				end
			end
		end
	elseif self.frameID == "bank" then
		isGuildBankSort = false;
		local i = -1
		local bag = CreateBagFromID(i);
		local type = select(2, GetContainerNumFreeSlots(i));
		if type == nil then
			type = "ALL"
		else
			type = tostring(type);
		end
		if bags[type] == nil then
			bags[type] = bag;
		else
			for j = 1, #bag, 1 do
				table.insert(bags[type], bag[j]);
			end
		end

		for i = NUM_BAG_FRAMES+1, NUM_BAG_FRAMES + NUM_BANKBAGSLOTS, 1 do
			local bag = CreateBagFromID(i);
			local type = select(2, GetContainerNumFreeSlots(i));
			if type == nil then
				type = "ALL"
			else
				type = tostring(type);
			end
			if bags[type] == nil then
				bags[type] = bag;
			else
				for j = 1, #bag, 1 do
					table.insert(bags[type], bag[j]);
				end
			end
		end
	elseif self.frameID == "guildbank" then
		isGuildBankSort = true;

		local currentTab = GetCurrentGuildBankTab and GetCurrentGuildBankTab() or 0

		if currentTab and currentTab > 0 then
			local bankType = GetAscensionBankType()
			local canSort = false

			if bankType == "personal" or bankType == "realm" then
				canSort = true
			else
				local _, _, canView, canDeposit, _, remainingWithdrawals = GetGuildBankTabInfo(currentTab)
				if canDeposit and (remainingWithdrawals == -1 or remainingWithdrawals > 0) then
					canSort = true
				end
			end

			if canSort then
				local tabItems = CreateGuildBankTabItems(currentTab)
				bags["GUILDBANK"] = tabItems
			else
				return
			end
		else
			return
		end
	end

	local bagCount = 0
	for k, v in pairs(bags) do
		if v ~= nil then
			bagCount = bagCount + 1
		end
	end

	if bagCount == 0 then
		return
	end

	BeginSort();

	for k, v in pairs(bags) do
		if v ~= nil then
			if isGuildBankSort then
				SortGuildBankTab(v);
			else
				SortBag(v);
			end
		end
	end

	frame:Show();
end

function SortBtn:OnEnter()
	if self:GetRight() > (GetScreenWidth() / 2) then
		GameTooltip:SetOwner(self, 'ANCHOR_LEFT')
	else
		GameTooltip:SetOwner(self, 'ANCHOR_RIGHT')
	end
	self:UpdateTooltip()
end

function SortBtn:OnLeave()
	if GameTooltip:IsOwned(self) then
		GameTooltip:Hide()
	end
end

--[[ Update Methods ]] --

function SortBtn:UpdateTooltip()
	if GameTooltip:IsOwned(self) then
		GameTooltip:SetText(L.TipShowSortBtn)
	end
end

--[[ Properties ]] --

function SortBtn:SetFrameID(frameID)
	if self:GetFrameID() ~= frameID then
		self.frameID = frameID
	end
end

function SortBtn:GetFrameID()
	return self.frameID
end