local E, L, V, P, G = unpack(ElvUI); --Import: Engine, Locales, PrivateDB, ProfileDB, GlobalDB
local DT = E:GetModule("DataTexts");

--Cache global variables
--Lua functions
local unpack = unpack
local format, join = string.format, string.join
local sort, wipe = table.sort, wipe
--WoW API / Variables
local EasyMenu = EasyMenu
local GetGuildInfo = GetGuildInfo
local GetGuildRosterInfo = GetGuildRosterInfo
local GetGuildRosterMOTD = GetGuildRosterMOTD
local GetMouseFocus = GetMouseFocus
local GetNumGuildMembers = GetNumGuildMembers
local GetQuestDifficultyColor = GetQuestDifficultyColor
local GetRealZoneText = GetRealZoneText
local GuildRoster = GuildRoster
local InviteUnit = InviteUnit
local IsInGuild = IsInGuild
local IsShiftKeyDown = IsShiftKeyDown
local LoadAddOn = LoadAddOn
local SetItemRef = SetItemRef
local ToggleFriendsFrame = ToggleFriendsFrame
local UnitInParty = UnitInParty
local UnitInRaid = UnitInRaid
local CUSTOM_CLASS_COLORS = CUSTOM_CLASS_COLORS
local RAID_CLASS_COLORS = RAID_CLASS_COLORS
local MOTD_COLON = MOTD_COLON

local FRIENDS_LIST_ONLINE = "FRIENDS_LIST_ONLINE"

local tthead, ttsubh, ttoff = {r=0.4, g=0.78, b=1}, {r=0.75, g=0.9, b=1}, {r=.3,g=1,b=.3}
local activezone, inactivezone = {r=0.3, g=1.0, b=0.3}, {r=0.65, g=0.65, b=0.65}
local displayString = ""
local noGuildString = ""
local guildInfoString = "%s"
local guildInfoString2 = join("", GUILD, ": %d/%d")
local guildMotDString = "%s |cffaaaaaa |cffffffff%s"
local levelNameString = "|cff%02x%02x%02x%d|r |cff%02x%02x%02x%s|r %s"
local levelNameStatusString = "|cff%02x%02x%02x%d|r %s "
local nameRankString = "%s |cff999999-|cffffffff %s"
local moreMembersOnlineString = join("", "+ %d ", FRIENDS_LIST_ONLINE, "...")
local noteString = join("", "|cff999999   ", LABEL_NOTE, ":|r %s")
local officerNoteString = join("", "|cff999999   ", GUILD_RANK1_DESC, ":|r %s")
local guildTable, guildMotD = {}, ""
local lastPanel

local function SortGuildTable(shift)
	sort(guildTable, function(a, b)
		if a and b then
			if shift then
				return a[9] < b[9]
			else
				return a[1] < b[1]
			end
		end
	end)
end

local function BuildGuildTable()
	wipe(guildTable)
	local _, name, rank, level, zone, note, officernote, connected, status, class

	local totalMembers = GetNumGuildMembers()
	for i = 1, totalMembers do
		name, rank, _, level, class, zone, note, officernote, connected, status = GetGuildRosterInfo(i)

		if connected then
			guildTable[getn(guildTable) + 1] = {name, rank, level, zone, note, officernote, connected, status, string.upper(class)}
		end
	end
end

local function UpdateGuildMessage()
	guildMotD = GetGuildRosterMOTD()
end

local eventHandlers = {
	["CHAT_MSG_SYSTEM"] = function()
		GuildRoster()
	end,
	-- when we enter the world and guildframe is not available then
	-- load guild frame, update guild message and guild xp
	["PLAYER_ENTERING_WORLD"] = function()
		if IsInGuild() then
			GuildRoster()
		end
	end,
	-- Guild Roster updated, so rebuild the guild table
	["GUILD_ROSTER_UPDATE"] = function(self)
		GuildRoster()
		BuildGuildTable()
		UpdateGuildMessage()
		if GetMouseFocus() == self then
			self:GetScript("OnEnter")(self, nil, true)
		end
	end,
	["PLAYER_GUILD_UPDATE"] = function()
		GuildRoster()
	end,
	-- our guild message of the day changed
	["GUILD_MOTD"] = function(_, arg1)
		guildMotD = arg1
	end,
	["ELVUI_FORCE_RUN"] = E.noop,
	["ELVUI_COLOR_UPDATE"] = E.noop,
}

local function OnEvent(self, event, ...)
	lastPanel = self

	if IsInGuild() then
		eventHandlers[event](self, unpack(arg))
		self.text:SetText(format(displayString, getn(guildTable)))
	else
		self.text:SetText(noGuildString)
	end
end

local menuFrame = CreateFrame("Frame", "GuildDatatTextRightClickMenu", E.UIParent, "L_UIDropDownMenuTemplate")
local menuList = {
	{ text = OPTIONS_MENU, isTitle = true, notCheckable = true},
	{ text = INVITE, hasArrow = true, notCheckable = true,},
	{ text = CHAT_MSG_WHISPER_INFORM, hasArrow = true, notCheckable=true,}
}

local function inviteClick(_, playerName)
	menuFrame:Hide()
	InviteUnit(playerName)
end

local function whisperClick(_, playerName)
	menuFrame:Hide()
	SetItemRef("player:"..playerName, ("|Hplayer:%1$s|h[%1$s]|h"):format(playerName), "LeftButton")
end

local function OnClick(_, btn)
	if btn == "RightButton" and IsInGuild() then
		DT.tooltip:Hide()

		local classc, levelc, grouped, info
		local menuCountWhispers = 0
		local menuCountInvites = 0

		menuList[2].menuList = {}
		menuList[3].menuList = {}

		for i = 1, getn(guildTable) do
			info = guildTable[i]
			if info[7] and info[1] ~= E.myname then
				classc, levelc = (CUSTOM_CLASS_COLORS or RAID_CLASS_COLORS)[info[9]], GetQuestDifficultyColor(info[3])
				--if UnitInParty(info[1]) or UnitInRaid(info[1]) then
				--	grouped = "|cffaaaaaa*|r"
				--elseif not info[11] then
					menuCountInvites = menuCountInvites + 1
					grouped = ""
					menuList[2].menuList[menuCountInvites] = {text = format(levelNameString, levelc.r*255,levelc.g*255,levelc.b*255, info[3], classc.r*255,classc.g*255,classc.b*255, info[1], ""), arg1 = info[1],notCheckable=true, func = inviteClick}
				--end
				menuCountWhispers = menuCountWhispers + 1
				if not grouped then grouped = "" end
				menuList[3].menuList[menuCountWhispers] = {text = format(levelNameString, levelc.r*255,levelc.g*255,levelc.b*255, info[3], classc.r*255,classc.g*255,classc.b*255, info[1], grouped), arg1 = info[1],notCheckable=true, func = whisperClick}
			end
		end

		L_EasyMenu(menuList, menuFrame, "cursor", 0, 0, "MENU", 2)
	else
		ToggleFriendsFrame(3)
	end
end

local function OnEnter(self, _, noUpdate)
	if not IsInGuild() then return end

	DT:SetupTooltip(self)

	local online, total = 0, GetNumGuildMembers(true)
	for i = 0, total do
		local _, _, _, _, _, _, _, _, _, status = GetGuildRosterInfo(i)
		if status then
			online = online + 1
		end
	end
	if getn(guildTable) == 0 then BuildGuildTable() end

	SortGuildTable(IsShiftKeyDown())

	local guildName, guildRank = GetGuildInfo("player")

	if guildName and guildRank then
		DT.tooltip:AddDoubleLine(format(guildInfoString, guildName), format(guildInfoString2, online, total),tthead.r,tthead.g,tthead.b,tthead.r,tthead.g,tthead.b)
		DT.tooltip:AddLine(guildRank, unpack(tthead))
	end

	if guildMotD ~= "" then
		DT.tooltip:AddLine(" ")
		DT.tooltip:AddLine(format(guildMotDString, GUILD_MOTD_LABEL, guildMotD), ttsubh.r, ttsubh.g, ttsubh.b, 1)
	end

	local zonec, classc, levelc, info
	local shown = 0

	DT.tooltip:AddLine(" ")
	for i = 1, getn(guildTable) do
		-- if more then 30 guild members are online, we don't Show any more, but inform user there are more
		if 30 - shown <= 1 then
			if online - 30 > 1 then DT.tooltip:AddLine(format(moreMembersOnlineString, online - 30), ttsubh.r, ttsubh.g, ttsubh.b) end
			break
		end

		info = guildTable[i]
		if GetRealZoneText() == info[4] then zonec = activezone else zonec = inactivezone end

		classc, levelc = (CUSTOM_CLASS_COLORS or RAID_CLASS_COLORS)[info[9]], GetQuestDifficultyColor(info[3])

		if IsShiftKeyDown() then
			DT.tooltip:AddDoubleLine(format(nameRankString, info[1], info[2]), info[4], classc.r, classc.g, classc.b, zonec.r, zonec.g, zonec.b)
			if info[5] ~= "" then DT.tooltip:AddLine(format(noteString, info[5]), ttsubh.r, ttsubh.g, ttsubh.b, 1) end
			if info[6] ~= "" then DT.tooltip:AddLine(format(officerNoteString, info[6]), ttoff.r, ttoff.g, ttoff.b, 1) end
		else
			DT.tooltip:AddDoubleLine(format(levelNameStatusString, levelc.r*255, levelc.g*255, levelc.b*255, info[3], info[1], info[4]), info[4], classc.r,classc.g,classc.b, zonec.r,zonec.g,zonec.b)
		end
		shown = shown + 1
	end

	DT.tooltip:Show()

	if not noUpdate then
		GuildRoster()
	end
end

local function ValueColorUpdate(hex)
	displayString = join("", GUILD, ": ", hex, "%d|r")
	noGuildString = join("", hex, L["No Guild"])

	if lastPanel ~= nil then
		OnEvent(lastPanel, "ELVUI_COLOR_UPDATE")
	end
end
E["valueColorUpdateFuncs"][ValueColorUpdate] = true

DT:RegisterDatatext("Guild", {"PLAYER_ENTERING_WORLD", "CHAT_MSG_SYSTEM", "GUILD_ROSTER_UPDATE", "PLAYER_GUILD_UPDATE", "GUILD_MOTD"}, OnEvent, nil, OnClick, OnEnter, nil, GUILD)