local E, L, V, P, G = unpack(ElvUI); --Import: Engine, Locales, PrivateDB, ProfileDB, GlobalDB
local M = E:GetModule("Misc");
local CH = E:GetModule("Chat");
local CC = E:GetModule("ClassCache");

--Cache global variables
--Lua functions
local select, unpack, type = select, unpack, type
local gsub, gmatch, format, lower, match = string.gsub, string.gmatch, string.format, string.lower, string.match
local strlower, split = strlower, string.split
--WoW API / Variables
local CreateFrame = CreateFrame
local WorldFrame = WorldFrame
local WorldGetChildren = WorldFrame.GetChildren
local RAID_CLASS_COLORS = RAID_CLASS_COLORS

--Message cache
local messageToSender = {}

function M:UpdateBubbleBorder()
	if not this.text then return end

	if E.private.general.chatBubbles == "backdrop" then
		if E.PixelMode then
			this:SetBackdropBorderColor(this.text:GetTextColor())
		else
			local r, g, b = this.text:GetTextColor()
			this.bordertop:SetTexture(r, g, b)
			this.borderbottom:SetTexture(r, g, b)
			this.borderleft:SetTexture(r, g, b)
			this.borderright:SetTexture(r, g, b)
		end
	end

	local text = this.text:GetText()
	if this.Name then
		this.Name:SetText("") --Always reset it
		if text and E.private.general.chatBubbleName then

			M:AddChatBubbleName(this, messageToSender[text])
		end
	end

	if E.private.chat.enable and E.private.general.classCache and E.private.general.classColorMentionsSpeech then
		local classColorTable, isFirstWord, rebuiltString, lowerCaseWord, tempWord, wordMatch, classMatch
		if text and match(text, "%s-%S+%s*") then
			for word in gmatch(text, "%s-%S+%s*") do
				tempWord = gsub(word, "^[%s%p]-([^%s%p]+)([%-]?[^%s%p]-)[%s%p]*$","%1%2")
				lowerCaseWord = lower(tempWord)

				classMatch = CC:GetCacheTable()[E.myrealm][tempWord]
				wordMatch = classMatch and lowerCaseWord

				if wordMatch and not E.global.chat.classColorMentionExcludedNames[wordMatch] then
					classColorTable = CUSTOM_CLASS_COLORS and CUSTOM_CLASS_COLORS[classMatch] or RAID_CLASS_COLORS[classMatch]
					word = gsub(word, gsub(tempWord, "%-","%%-"), format("\124cff%.2x%.2x%.2x%s\124r", classColorTable.r*255, classColorTable.g*255, classColorTable.b*255, tempWord))
				end

				if not isFirstWord then
					rebuiltString = word
					isFirstWord = true
				else
					rebuiltString = format("%s%s", rebuiltString, word)
				end
			end

			if rebuiltString ~= nil then
				this.text:SetText(rebuiltString)
			end
		end
	end
end

function M:AddChatBubbleName(chatBubble, name)
	if not name then return end

	local defaultColor, color = "|cffffffff"
	local name, realm = split("-", name)
	local class = CC:GetClassByName(name, realm)

	if class then
		color = (CUSTOM_CLASS_COLORS and CUSTOM_CLASS_COLORS[class] and E:RGBToHex(CUSTOM_CLASS_COLORS[class].r, CUSTOM_CLASS_COLORS[class].g, CUSTOM_CLASS_COLORS[class].b)) or (RAID_CLASS_COLORS[class] and E:RGBToHex(RAID_CLASS_COLORS[class].r, RAID_CLASS_COLORS[class].g, RAID_CLASS_COLORS[class].b))
	else
		color = defaultColor
	end

	chatBubble.Name:SetText(format("%s%s|r", color, name))
end

function M:SkinBubble(frame)
	local mult = E.mult * UIParent:GetScale()
	for i = 1, frame:GetNumRegions() do
		local region = select(i, frame:GetRegions())
		if region:GetObjectType() == "Texture" then
			region:SetTexture(nil)
		elseif region:GetObjectType() == "FontString" then
			frame.text = region
		end
	end

	local name = frame:CreateFontString(nil, "OVERLAY")
	if E.private.general.chatBubbles == "backdrop" then
		name:SetPoint("TOPLEFT", 5, 19)
	else
		name:SetPoint("TOPLEFT", 5, 6)
	end
	name:SetPoint("BOTTOMRIGHT", frame, "TOPRIGHT", -5, -5)
	name:SetJustifyH("LEFT")
	E:FontTemplate(name, E.LSM:Fetch("font", E.private.general.chatBubbleFont), E.private.general.chatBubbleFontSize * 0.85, E.private.general.chatBubbleFontOutline)
	frame.Name = name

	if E.private.general.chatBubbles == "backdrop" then
		if E.PixelMode then
			frame:SetBackdrop({
				bgFile = E.media.blankTex,
				edgeFile = E.media.blankTex,
				tile = false, tileSize = 0, edgeSize = mult,
				insets = {left = 0, right = 0, top = 0, bottom = 0}
			})
			frame:SetBackdropColor(unpack(E.media.backdropfadecolor))
			frame:SetBackdropBorderColor(0, 0, 0)
		else
			frame:SetBackdrop(nil)
		end

		local r, g, b = frame.text:GetTextColor()
		if not E.PixelMode then
			frame.backdrop = frame:CreateTexture(nil, "BACKGROUND")
			frame.backdrop:SetAllPoints(frame)
			frame.backdrop:SetTexture(unpack(E.media.backdropfadecolor))

			frame.bordertop = frame:CreateTexture(nil, "ARTWORK")
			frame.bordertop:SetPoint("TOPLEFT", frame, "TOPLEFT", -mult*2, mult*2)
			frame.bordertop:SetPoint("TOPRIGHT", frame, "TOPRIGHT", mult*2, mult*2)
			frame.bordertop:SetHeight(mult)
			frame.bordertop:SetTexture(r, g, b)

			frame.bordertop.backdrop = frame:CreateTexture(nil, "BORDER")
			frame.bordertop.backdrop:SetPoint("TOPLEFT", frame.bordertop, "TOPLEFT", -mult, mult)
			frame.bordertop.backdrop:SetPoint("TOPRIGHT", frame.bordertop, "TOPRIGHT", mult, mult)
			frame.bordertop.backdrop:SetHeight(mult * 3)
			frame.bordertop.backdrop:SetTexture(0, 0, 0)

			frame.borderbottom = frame:CreateTexture(nil, "ARTWORK")
			frame.borderbottom:SetPoint("BOTTOMLEFT", frame, "BOTTOMLEFT", -mult*2, -mult*2)
			frame.borderbottom:SetPoint("BOTTOMRIGHT", frame, "BOTTOMRIGHT", mult*2, -mult*2)
			frame.borderbottom:SetHeight(mult)
			frame.borderbottom:SetTexture(r, g, b)

			frame.borderbottom.backdrop = frame:CreateTexture(nil, "BORDER")
			frame.borderbottom.backdrop:SetPoint("BOTTOMLEFT", frame.borderbottom, "BOTTOMLEFT", -mult, -mult)
			frame.borderbottom.backdrop:SetPoint("BOTTOMRIGHT", frame.borderbottom, "BOTTOMRIGHT", mult, -mult)
			frame.borderbottom.backdrop:SetHeight(mult * 3)
			frame.borderbottom.backdrop:SetTexture(0, 0, 0)

			frame.borderleft = frame:CreateTexture(nil, "ARTWORK")
			frame.borderleft:SetPoint("TOPLEFT", frame, "TOPLEFT", -mult*2, mult*2)
			frame.borderleft:SetPoint("BOTTOMLEFT", frame, "BOTTOMLEFT", mult*2, -mult*2)
			frame.borderleft:SetWidth(mult)
			frame.borderleft:SetTexture(r, g, b)

			frame.borderleft.backdrop = frame:CreateTexture(nil, "BORDER")
			frame.borderleft.backdrop:SetPoint("TOPLEFT", frame.borderleft, "TOPLEFT", -mult, mult)
			frame.borderleft.backdrop:SetPoint("BOTTOMLEFT", frame.borderleft, "BOTTOMLEFT", -mult, -mult)
			frame.borderleft.backdrop:SetWidth(mult * 3)
			frame.borderleft.backdrop:SetTexture(0, 0, 0)

			frame.borderright = frame:CreateTexture(nil, "ARTWORK")
			frame.borderright:SetPoint("TOPRIGHT", frame, "TOPRIGHT", mult*2, mult*2)
			frame.borderright:SetPoint("BOTTOMRIGHT", frame, "BOTTOMRIGHT", -mult*2, -mult*2)
			frame.borderright:SetWidth(mult)
			frame.borderright:SetTexture(r, g, b)

			frame.borderright.backdrop = frame:CreateTexture(nil, "BORDER")
			frame.borderright.backdrop:SetPoint("TOPRIGHT", frame.borderright, "TOPRIGHT", mult, mult)
			frame.borderright.backdrop:SetPoint("BOTTOMRIGHT", frame.borderright, "BOTTOMRIGHT", mult, -mult)
			frame.borderright.backdrop:SetWidth(mult * 3)
			frame.borderright.backdrop:SetTexture(0, 0, 0)
		else
			frame:SetBackdropColor(unpack(E.media.backdropfadecolor))
			frame:SetBackdropBorderColor(r, g, b)
		end

		E:FontTemplate(frame.text, E.LSM:Fetch("font", E.private.general.chatBubbleFont), E.private.general.chatBubbleFontSize, E.private.general.chatBubbleFontOutline);
	elseif E.private.general.chatBubbles == "backdrop_noborder" then
		frame:SetBackdrop(nil)
		frame.backdrop = frame:CreateTexture(nil, "ARTWORK")
		E:SetInside(frame.backdrop, frame, 4, 4)
		frame.backdrop:SetTexture(unpack(E.media.backdropfadecolor))
		E:FontTemplate(frame.text, E.LSM:Fetch("font", E.private.general.chatBubbleFont), E.private.general.chatBubbleFontSize, E.private.general.chatBubbleFontOutline)
		frame:SetClampedToScreen(false)
	elseif E.private.general.chatBubbles == "nobackdrop" then
		frame:SetBackdrop(nil)
		E:FontTemplate(frame.text, E.LSM:Fetch("font", E.private.general.chatBubbleFont), E.private.general.chatBubbleFontSize, E.private.general.chatBubbleFontOutline)
		frame:SetClampedToScreen(false)
		frame.Name:Hide()
	end

	HookScript(frame, "OnShow", M.UpdateBubbleBorder)
	frame:SetFrameStrata("DIALOG")
	M.UpdateBubbleBorder(frame)

	frame.isSkinnedElvUI = true
end

function M:IsChatBubble(frame)
	for i = 1, frame:GetNumRegions() do
		local region = select(i, frame:GetRegions())
		if region.GetTexture and region:GetTexture() and type(region:GetTexture() == "string") and strlower(region:GetTexture()) == [[interface\tooltips\chatbubble-background]] then return true end
	end
	return false
end

local function ChatBubble_OnEvent()
	if not E.private.general.chatBubbleName then return end

	messageToSender[arg1] = arg2
end

local numChildren = 0
local function ChatBubble_OnUpdate()
	if not M.BubbleFrame.lastupdate then
		M.BubbleFrame.lastupdate = -2 -- wait 2 seconds before hooking frames
	end

	M.BubbleFrame.lastupdate = M.BubbleFrame.lastupdate + arg1
	if M.BubbleFrame.lastupdate < .1 then return end
	M.BubbleFrame.lastupdate = 0

	local count =  select("#", WorldGetChildren(WorldFrame))
	if count ~= numChildren then
		for i = numChildren + 1, count do
			local frame = select(i, WorldGetChildren(WorldFrame))

			if M:IsChatBubble(frame) then
				if not frame.isSkinnedElvUI then
					M:SkinBubble(frame)
				end
			end
		end
		numChildren = count
	end
end

function M:LoadChatBubbles()
	if E.private.general.chatBubbles == "disabled" then return end

	self.BubbleFrame = CreateFrame("Frame")

	self.BubbleFrame:RegisterEvent("CHAT_MSG_SAY")
	self.BubbleFrame:RegisterEvent("CHAT_MSG_YELL")
	self.BubbleFrame:RegisterEvent("CHAT_MSG_PARTY")
	self.BubbleFrame:RegisterEvent("CHAT_MSG_MONSTER_SAY")
	self.BubbleFrame:RegisterEvent("CHAT_MSG_MONSTER_YELL")
	self.BubbleFrame:SetScript("OnEvent", ChatBubble_OnEvent)
	self.BubbleFrame:SetScript("OnUpdate", ChatBubble_OnUpdate)
end
