-- ------------------------------------------------------------------------------ --
--                                TradeSkillMaster                                --
--                          https://tradeskillmaster.com                          --
--    All Rights Reserved - Detailed license information included with addon.     --
-- ------------------------------------------------------------------------------ --

local _, TSM = ...
local AuctionUI = TSM.UI:NewPackage("AuctionUI")
local L = TSM.Include("Locale").GetTable()
local Delay = TSM.Include("Util.Delay")
local Event = TSM.Include("Util.Event")
local Log = TSM.Include("Util.Log")
local ScriptWrapper = TSM.Include("Util.ScriptWrapper")
local Settings = TSM.Include("Service.Settings")
local ItemLinked = TSM.Include("Service.ItemLinked")
local UIElements = TSM.Include("UI.UIElements")
local private = {
	settings = nil,
	topLevelPages = {},
	frame = nil,
	hasShown = false,
	isSwitching = false,
	scanningPage = nil,
	updateCallbacks = {},
	defaultFrame = nil,
}
local MIN_FRAME_SIZE = { width = 750, height = 450 }



-- ============================================================================
-- Module Functions
-- ============================================================================

function AuctionUI.OnInitialize()
	private.settings = Settings.NewView()
		:AddKey("global", "auctionUIContext", "showDefault")
		:AddKey("global", "auctionUIContext", "frame")
	UIParent:UnregisterEvent("AUCTION_HOUSE_SHOW")
	Event.Register("AUCTION_HOUSE_SHOW", private.AuctionFrameInit)
	Event.Register("AUCTION_HOUSE_CLOSED", private.HideAuctionFrame)
	if TSM.IsWowClassic() then
		Delay.AfterTime(1, function() LoadAddOn("Blizzard_AuctionUI") end)
	else
		Delay.AfterTime(1, function() LoadAddOn("Blizzard_AuctionHouseUI") end)
	end
	ItemLinked.RegisterCallback(private.ItemLinkedCallback)
end

function AuctionUI.OnDisable()
	if private.frame then
		-- hide the frame
		private.frame:Hide()
		assert(not private.frame)
	end
end

function AuctionUI.RegisterTopLevelPage(name, callback, itemLinkedHandler)
	tinsert(private.topLevelPages, { name = name, callback = callback, itemLinkedHandler = itemLinkedHandler })
end

function AuctionUI.StartingScan(pageName)
	if private.scanningPage and private.scanningPage ~= pageName then
		Log.PrintfUser(L["A scan is already in progress. Please stop that scan before starting another one."])
		return false
	end
	private.scanningPage = pageName
	Log.Info("Starting scan %s", pageName)
	if private.frame then
		private.frame:SetPulsingNavButton(private.scanningPage)
	end
	for _, callback in ipairs(private.updateCallbacks) do
		callback()
	end
	return true
end

function AuctionUI.EndedScan(pageName)
	if private.scanningPage == pageName then
		Log.Info("Ended scan %s", pageName)
		private.scanningPage = nil
		if private.frame then
			private.frame:SetPulsingNavButton()
		end
		for _, callback in ipairs(private.updateCallbacks) do
			callback()
		end
	end
end

function AuctionUI.SetOpenPage(name)
	private.frame:SetSelectedNavButton(name, true)
end

function AuctionUI.IsPageOpen(name)
	if not private.frame then
		return false
	end
	return private.frame:GetSelectedNavButton() == name
end

function AuctionUI.IsScanning()
	return private.scanningPage and true or false
end

function AuctionUI.RegisterUpdateCallback(callback)
	tinsert(private.updateCallbacks, callback)
end

function AuctionUI.IsVisible()
	return private.frame and true or false
end



-- ============================================================================
-- Main Frame
-- ============================================================================

function private.AuctionFrameInit()
	local tabTemplateName = nil
	if TSM.IsWowClassic() then
		private.defaultFrame = AuctionFrame
		tabTemplateName = "AuctionTabTemplate"
	else
		private.defaultFrame = AuctionHouseFrame
		tabTemplateName = "AuctionHouseFrameTabTemplate"
	end
	if not private.hasShown then
		private.hasShown = true
		local tabId = private.defaultFrame.numTabs + 1
		local tab = CreateFrame("Button", "AuctionFrameTab"..tabId, private.defaultFrame, tabTemplateName)
		tab:Hide()
		tab:SetID(tabId)
		tab:SetText(Log.ColorUserAccentText("TSM4"))
		tab:SetNormalFontObject(GameFontHighlightSmall)
		if TSM.IsWowClassic() then
			tab:SetPoint("LEFT", _G["AuctionFrameTab"..tabId - 1], "RIGHT", -8, 0)
		else
			tab:SetPoint("LEFT", AuctionHouseFrame.Tabs[tabId - 1], "RIGHT", -15, 0)
			tinsert(AuctionHouseFrame.Tabs, tab)
		end
		tab:Show()
		PanelTemplates_SetNumTabs(private.defaultFrame, tabId)
		PanelTemplates_EnableTab(private.defaultFrame, tabId)
		ScriptWrapper.Set(tab, "OnClick", private.TSMTabOnClick)
	end
	if private.settings.showDefault then
		UIParent_OnEvent(UIParent, "AUCTION_HOUSE_SHOW")
	else
		PlaySound(SOUNDKIT.AUCTION_WINDOW_OPEN)
		private.ShowAuctionFrame()
	end
end

function private.ShowAuctionFrame()
	if private.frame then
		return
	end
	private.frame = private.CreateMainFrame()
	private.frame:Show()
	private.frame:Draw()
	for _, callback in ipairs(private.updateCallbacks) do
		callback()
	end
end

function private.HideAuctionFrame()
	if not private.frame then
		return
	end
	private.frame:Hide()
	assert(not private.frame)
	for _, callback in ipairs(private.updateCallbacks) do
		callback()
	end
end

function private.CreateMainFrame()
	TSM.UI.AnalyticsRecordPathChange("auction")
	local frame = UIElements.New("LargeApplicationFrame", "base")
		:SetParent(UIParent)
		:SetSettingsContext(private.settings, "frame")
		:SetMinResize(MIN_FRAME_SIZE.width, MIN_FRAME_SIZE.height)
		:SetStrata("HIGH")
		:SetProtected(TSM.db.global.coreOptions.protectAuctionHouse)
		:AddPlayerGold()
		:AddAppStatusIcon()
		:AddSwitchButton(private.SwitchBtnOnClick)
		:SetScript("OnHide", private.BaseFrameOnHide)
	for _, info in ipairs(private.topLevelPages) do
		frame:AddNavButton(info.name, info.callback)
	end
	local whatsNewDialog = TSM.UI.WhatsNew.GetDialog()
	if whatsNewDialog then
		frame:ShowDialogFrame(whatsNewDialog)
	end
	return frame
end



-- ============================================================================
-- Local Script Handlers
-- ============================================================================

function private.BaseFrameOnHide(frame)
	assert(frame == private.frame)
	frame:Release()
	private.frame = nil
	if not private.isSwitching then
		PlaySound(SOUNDKIT.AUCTION_WINDOW_CLOSE)
		if TSM.IsWowClassic() then
			CloseAuctionHouse()
		else
			C_AuctionHouse.CloseAuctionHouse()
		end
	end
	TSM.UI.AnalyticsRecordClose("auction")
end

function private.SwitchBtnOnClick(button)
	private.isSwitching = true
	private.settings.showDefault = true
	private.HideAuctionFrame()
	UIParent_OnEvent(UIParent, "AUCTION_HOUSE_SHOW")
	private.isSwitching = false
end

local function NoOp()
	-- do nothing - what did you expect?
end

function private.TSMTabOnClick()
	private.settings.showDefault = false
	if TSM.IsWowClassic() then
		ClearCursor()
		ClickAuctionSellItemButton(AuctionsItemButton, "LeftButton")
	end
	ClearCursor()
	-- Replace CloseAuctionHouse() with a no-op while hiding the AH frame so we don't stop interacting with the AH NPC
	if TSM.IsWowClassic() then
		local origCloseAuctionHouse = CloseAuctionHouse
		CloseAuctionHouse = NoOp
		AuctionFrame_Hide()
		CloseAuctionHouse = origCloseAuctionHouse
	else
		local origCloseAuctionHouse = C_AuctionHouse.CloseAuctionHouse
		C_AuctionHouse.CloseAuctionHouse = NoOp
		HideUIPanel(private.defaultFrame)
		C_AuctionHouse.CloseAuctionHouse = origCloseAuctionHouse
	end
	private.ShowAuctionFrame()
end

function private.ItemLinkedCallback(name, itemLink)
	if not private.frame then
		return
	end
	local path = private.frame:GetSelectedNavButton()
	for _, info in ipairs(private.topLevelPages) do
		if info.name == path then
			if info.itemLinkedHandler(name, itemLink) then
				return true
			else
				return
			end
		end
	end
	error("Invalid frame path")
end