-- module independent variables --
----------------------------------
local addon, ns = ...
local C, L, I = ns.LC.color, ns.L, ns.I


-- module own local variables and local cached functions --
-----------------------------------------------------------
local name = "Mail" -- BUTTON_LAG_MAIL L["ModDesc-Mail"]
local ttName, tooltip, tt, module = name.."TT"
local alertLocked,onUpdateLocked,hookOn = false,false,false;
local storedMailLineFaction = "%s%s |TInterface\\PVPFrame\\PVP-Currency-%s:16:16:0:-1:16:16:0:16:0:16|t";
local storedMailLineNeutral = "%s%s";
local icons = {}


-- register icon names and default files --
-------------------------------------------
I[name] = {iconfile="interface\\icons\\inv_letter_15",coords={0.05,0.95,0.05,0.95}}					--IconName::Mail--
I[name..'_new'] = {iconfile="interface\\icons\\inv_letter_"..(ns.client_version<2 and 16 or 18),coords={0.05,0.95,0.05,0.95}}			--IconName::Mail_new--
I[name..'_stored'] = {iconfile="interface\\icons\\inv_letter_03",coords={0.05,0.95,0.05,0.95}}		--IconName::Mail_stored--


-- some local functions --
--------------------------
local function clearAllStoredMails()
	for i=1, #Broker_Everything_CharacterDB.order do
		local toonName = Broker_Everything_CharacterDB.order[i];
		if toonName and toonName~=ns.player.name_realm then
			ns.tablePath(Broker_Everything_CharacterDB,toonName,"mail");
			Broker_Everything_CharacterDB[toonName].mail = {new={},stored={}};
		end
	end
	module.onevent({},"BE_DUMMY_EVENT");
end

local function toonHasMails(toonMails,key,counter)
	local has,t,sender,oldest,returns = false,time();
	local mails = toonMails[key];
	if mails and #mails>0 then
		for i=1, #mails do
			if type(mails[i])=="table" then
				sender,returns = mails[i].sender,mails[i].returns;
			else
				sender,returns = strsplit(";",mails[i]);
			end
			returns = tonumber(returns);
			if returns then
				if returns<t then
					counter.returned = counter.returned + 1;
				else
					has = true;
					counter[key] = (counter[key] or 0) + 1;
					if (not oldest) or (oldest and returns<oldest) then
						oldest = returns;
					end
				end
			end
		end
	end
	return has,oldest;
end

local function sortStoredMails(a,b)
	return (a.returns or 0)<(b.returns or 0);
end

local function UpdateStatus(event)
	if ns.toon.mail==nil then
		ns.toon.mail = { new={}, stored={} };
	end

	local mailNew, _time = HasNewMail(), time();
	local sender,daysLeft,dt,ht,_;
	local returns,mailState,next1,next2,next3,tmp = (99*86400),0;

	if (_G.MailFrame:IsShown()) or (event=="MAIL_CLOSED") then
		ns.toon.mail.num, ns.toon.mail.total = GetInboxNumItems();
		ns.toon.mail.num, ns.toon.mail.total = ns.toon.mail.num or 0, ns.toon.mail.total or 0;
		if ns.toon.mail.stored==nil then
			ns.toon.mail.stored={};
		else
			wipe(ns.toon.mail.stored);
		end
		for i=1, ns.toon.mail.num do
			local _, _, sender_realm, _, _, _, daysLeft = GetInboxHeaderInfo(i);
			if sender_realm then
				local returns = _time + floor(daysLeft * 86400);
				if not sender_realm:find("%-") then
					sender_realm = sender_realm.."-"..ns.realm_short;
				end
				tinsert(ns.toon.mail.stored,sender_realm..";"..returns);
			end
		end
		wipe(ns.toon.mail.new);
	else
		local names = {};
		if ns.toon.mail.stored then
			for i=1, #ns.toon.mail.stored do
				local sender = strsplit(";",ns.toon.mail.stored[i]);
				names[sender]=true;
			end
		end
		if ns.toon.mail.new then
			for i=1, #ns.toon.mail.new do
				if type(ns.toon.mail.new[i])=="string" then
					local sender = strsplit(";",ns.toon.mail.new[i]);
					names[sender]=true;
				else
					ns.toon.mail.new[i] = nil;
				end
			end
		end
		local latest = {GetLatestThreeSenders()};
		for i=1, #latest do
			if type(latest[i])=="string" then
				latest[i] = ns.realmCheckOrAppend(latest[i]);
				if not names[latest[i]] then
					tinsert(ns.toon.mail.new,latest[i]);
				end
			end
		end
	end

	local mailStored,counter,_time,oldest = false,{stored=0,new=0,returned=0},time();
	for i=1, #Broker_Everything_CharacterDB.order do
		local toonName = Broker_Everything_CharacterDB.order[i];
		if toonName and toonName~=ns.player.name_realm then
			local toonMails = Broker_Everything_CharacterDB[toonName].mail or {};
			for _,key in pairs({"stored","new"}) do
				local has,_oldest = toonHasMails(toonMails,key,counter);
				if has then
					if (not oldest) or (oldest and oldest>_oldest) then
						oldest = _oldest;
					end
					mailStored = true;
				end
			end
		end
	end

	local icon,text,obj = I(name), L["No Mail"],ns.LDB:GetDataObjectByName(module.ldbName);

	if #ns.toon.mail.new>0 then
		icon, text = I(name.."_new"), C("green",L["New mail"]);
	elseif mailStored then
		icon, text = I(name.."_stored"), C("yellow",L["Stored mails"]);
	end

	obj.iconCoords,obj.icon,obj.text = icon.coords or {0,1,0,1},icon.iconfile,text;
end

local function AddStoredMailsLine(tt,toon)
	local hasData,toonName,_time = false,{strsplit("-",toon,2)},time();
	local faction,class = Broker_Everything_CharacterDB[toon].faction, Broker_Everything_CharacterDB[toon].class;
	if Broker_Everything_CharacterDB[toon].mail and ns.showThisChar(name,toonName[2],faction) then
		local toonMails = Broker_Everything_CharacterDB[toon].mail or {};
		local counter,key,oldest,has={stored=0,new=0,returned=0};
		for _,key in pairs({"stored","new"}) do
			local has,_oldest = toonHasMails(toonMails,key,counter);
			if has then
				oldest = _oldest;
			end
		end

		if counter.new>0 or counter.stored>0 then
			local str="";
			if counter.stored==0 and counter.new>0 then
				str = C("green",L["New mails"]..CHAT_HEADER_SUFFIX..counter.new);
			elseif counter.stored>0 or counter.new>0 then
				str = L["Mails"]..CHAT_HEADER_SUFFIX..counter.stored;
				if counter.new>0 then
					str = str.." "..C("green","("..NEW..CHAT_HEADER_SUFFIX..counter.new..")");
				end
			end
			local l=tt:AddLine(
				(faction=="Neutral" and storedMailLineNeutral or storedMailLineFaction):format(C(class,ns.scm(toonName[1])),ns.showRealmName(name,toonName[2]),faction),
				str
			);
			if toon==ns.toon.name_realm then
				tt:SetLineColor(l, .5, .5, .5);
			end
			hasData = true;
		end

		if oldest then
			local returnsIn = oldest-_time;
			tt:AddLine("  "..C("ltgray",L["Oldest:"]), C((returnsIn<86400 and "red") or (returnsIn<(3*86400) and "orange") or (returnsIn<(7*86400) and "yellow") or "ltgray",SecondsToTime(returnsIn)));
		end
	end
	return hasData;
end

local function createTooltip(tt)
	if not (tt and tt.key and tt.key==ttName) then return end -- don't override other LibQTip tooltips...

	local newMails = {};
	if HasNewMail() then
		newMails = {GetLatestThreeSenders()}; -- this function is unreliable after clearing and closing mail box. must be captured by HasNewMail().
	end
	local l,c
	if tt.lines~=nil then tt:Clear(); end

	local l = tt:AddLine();
	tt:SetCell(l,1,C("dkyellow",BUTTON_LAG_MAIL),tt:GetHeaderFont(),"LEFT");
	tt:AddSeparator(3,0,0,0,0);
	if #newMails>0 then
		tt:SetCell(l,2,C("green",L["You have new mails"]),nil,"RIGHT");
		tt:AddLine(C("ltblue",L["Lastest senders:"]));
		tt:AddSeparator()
		for i,v in ipairs(newMails) do
			tt:AddLine("   "..ns.scm(v));
		end
	else
		tt:SetCell(l,2,C("gray",L["No new mails"]),nil,"RIGHT");
	end

	if (ns.profile[name].showDaysLeft) then

		tt:AddSeparator(3,0,0,0,0);
		tt:SetCell(tt:AddLine(),1,C("dkyellow",L["Left in mailbox"]),nil,"LEFT",0);
		tt:AddSeparator();

		local hasData,t = false;

		if AddStoredMailsLine(tt,ns.player.name_realm) then
			hasData=true;
		end

		for i=1, #Broker_Everything_CharacterDB.order do
			if Broker_Everything_CharacterDB.order[i]~=ns.player.name_realm then
				if AddStoredMailsLine(tt,Broker_Everything_CharacterDB.order[i]) then
					hasData = true;
				end
			end
		end

		if not hasData then
			tt:AddLine(C("gray",L["No data"]));
		end
	end

	if (ns.profile.GeneralOptions.showHints) then
		tt:AddSeparator(4,0,0,0,0)
		ns.ClickOpts.ttAddHints(tt,name);
	end
	ns.roundupTooltip(tt);
end

local function SendMailHook(targetName)
	if debugstack():find("?") and type(targetName)~="string" then return end -- ignore double executed function

	local t = time()+30*86400;
	if targetName:find("-") then
		local tn,r = strsplit("-",targetName,2);
		if type(r)=="string" and r:len()>0 and type(ns.realms[r])=="string" then
			targetName = tn.."-"..ns.realms[r];
		end
	else
		targetName = targetName.."-"..ns.realm;
	end
	if Broker_Everything_CharacterDB[targetName] then
		if Broker_Everything_CharacterDB[targetName].mail==nil then
			Broker_Everything_CharacterDB[targetName].mail = { new={}, stored={} };
		end
		tinsert(Broker_Everything_CharacterDB[targetName].mail.new,ns.player.name..";"..t);
	end
end


-- module functions and variables --
------------------------------------
module = {
	events = {
		"PLAYER_LOGIN",
		"UPDATE_PENDING_MAIL",
		"MAIL_CLOSED",
		"MAIL_SHOW"
	},
	config_defaults = {
		enabled = false,
		playsound = false,
		showDaysLeft = true,
		hideMinimapMail = false,
		showAllFactions=true,
		showRealmNames=true,
		showCharsFrom="2"
	},
	clickOptionsRename = {
		["menu"] = "open_menu"
	},
	clickOptions = {
		["menu"] = "OptionMenu"
	}
}

ns.ClickOpts.addDefaults(module,{
	menu = "_RIGHT"
});

function module.options()
	return {
		broker = nil,
		tooltip = {
			showDaysLeft={ type="toggle", order=1, name=L["List mails on chars"], desc=L["Display a list of chars on all realms with there mail counts and 3 lowest days before return to sender. Chars with empty mail box aren't displayed."] },
			showAllFactions=2,
			showRealmNames=3,
			showCharsFrom=4,
		},
		misc = {
			playsound={ type="toggle", order=1, name=L["Play sound on new mail"], desc=L["Enable to play a sound on receiving a new mail message. Default is off"], width="full" },
			hideMinimapMail={ type="toggle", order=2, name=L["Hide minimap mail icon"], desc=L["Hide minimap mail icon"], width="full", disabled=ns.coexist.IsNotAlone },
			hideMinimapMailInfo = { type="description", order=3, name=ns.coexist.optionInfo, fontSize="medium", hidden=ns.coexist.IsNotAlone }
		},
	},
	{
		hideMinimapMail = "BE_HIDE_MINIMAPMAIL",
	}
end

function module.init()
	for i=1, 22 do
		local I = ("inv_letter_%02d"):format(i);
		icons[I] = "|Tinterface\\icons\\"..I..":16:16:0:0|t";
	end
	if (not ns.coexist.IsNotAlone()) and ns.profile[name].hideMinimapMail then
		ns.hideFrames("MiniMapMailFrame",true);
	end
end

function module.onevent(self,event,msg)
	if event=="BE_UPDATE_CFG" and msg and msg:find("^ClickOpt") then
		ns.ClickOpts.update(name);
	elseif event=="BE_UPDATE_CFG" then
		if not ns.coexist.IsNotAlone() then
			ns.hideFrames("MiniMapMailFrame",ns.profile[name].hideMinimapMail);
		end
	elseif event=="PLAYER_LOGIN" then
		hooksecurefunc("SendMail",SendMailHook);
		for i=1, #Broker_Everything_CharacterDB.order do
			local toonName = Broker_Everything_CharacterDB.order[i];
			if toonName then
				ns.tablePath(Broker_Everything_CharacterDB,toonName,"mail","new");
				ns.tablePath(Broker_Everything_CharacterDB,toonName,"mail","store");
				if Broker_Everything_CharacterDB[toonName].mail.count~=nil then -- deprecated counter
					Broker_Everything_CharacterDB[toonName].mail.count=nil;
				end
			end
		end
	end
	if ns.eventPlayerEnteredWorld then
		if (HasNewMail()) and (ns.profile[name].playsound) and (not alertLocked) then
			PlaySoundFile("Interface\\Addons\\"..addon.."\\media\\mailalert.mp3", "Master"); -- or SFX?
			alertLocked=true;
		elseif (not HasNewMail()) then
			alertLocked=false;
		end
		if event=="MAIL_SHOW" and ns.IsRetailClient() and not self.MailFrameOnHideHooked then
			_G.MailFrame:HookScript("OnHide",function()
				UpdateStatus("MAIL_CLOSED")
			end);
			self.MailFrameOnHideHooked = true;
		end
		UpdateStatus(event);
	end
end

-- function module.optionspanel(panel) end
-- function module.onmousewheel(self,direction) end
-- function module.ontooltip(tooltip) end

function module.onenter(self)
	if (ns.tooltipChkOnShowModifier(false)) then return; end
	tt = ns.acquireTooltip({ttName, 2, "LEFT", "RIGHT"},{true},{self});
	createTooltip(tt);
end

-- function module.onleave(self) end
-- function module.onclick(self,button) end
-- function module.ondblclick(self,button) end


-- final module registration --
-------------------------------
ns.modules[name] = module;