MAX_PARTY_MEMBERS = 4;
MAX_PARTY_DEBUFFS = 4;
MAX_PARTY_TOOLTIP_BUFFS = 16;
MAX_PARTY_TOOLTIP_DEBUFFS = 8;

function HidePartyFrame()
	for i=1, MAX_PARTY_MEMBERS, 1 do
		getglobal("PartyMemberFrame"..i):Hide();
	end
end

function ShowPartyFrame()
	for i=1, MAX_PARTY_MEMBERS, 1 do
		if GetPartyMember(i) then
			getglobal("PartyMemberFrame"..i):Show();
		end
	end
end

function PartyMemberFrame_ToPlayerArt(self)
	self.state = "player";
	local prefix = self:GetName();
	_G[prefix.."VehicleTexture"]:Hide();
	_G[prefix.."Texture"]:Show();
	_G[prefix.."Portrait"]:SetPoint("TOPLEFT", 7, -6);
	_G[prefix.."LeaderIcon"]:SetPoint("TOPLEFT", 0, 0);
	_G[prefix.."MasterIcon"]:SetPoint("TOPLEFT", 32, 0);
	_G[prefix.."PVPIcon"]:SetPoint("TOPLEFT", -9, -15);
	_G[prefix.."Disconnect"]:SetPoint("LEFT", -7, -1);
	
	self.overrideName = nil;
	
	UnitFrame_SetUnit(self, "party"..self:GetID(), _G[prefix.."HealthBar"], _G[prefix.."ManaBar"]);
	UnitFrame_SetUnit(_G[prefix.."PetFrame"], "partypet"..self:GetID(), _G[prefix.."PetFrameHealthBar"], nil);
	PartyMemberFrame_UpdateMember(self);
	
	UnitFrame_Update(self)
end

function PartyMemberFrame_ToVehicleArt(self, vehicleType)
	self.state = "vehicle";
	local prefix = self:GetName();
	_G[prefix.."Texture"]:Hide();
	if vehicleType == "Natural" then
		_G[prefix.."VehicleTexture"]:SetTexture("Interface\\Vehicles\\UI-Vehicles-PartyFrame-Organic");
	else
		_G[prefix.."VehicleTexture"]:SetTexture("Interface\\Vehicles\\UI-Vehicles-PartyFrame");
	end
	_G[prefix.."VehicleTexture"]:Show();
	_G[prefix.."Portrait"]:SetPoint("TOPLEFT", 4, -9);
	_G[prefix.."LeaderIcon"]:SetPoint("TOPLEFT", -3, 0);
	_G[prefix.."MasterIcon"]:SetPoint("TOPLEFT", 29, 0);
	_G[prefix.."PVPIcon"]:SetPoint("TOPLEFT", -12, -15);
	_G[prefix.."Disconnect"]:SetPoint("LEFT", -10, -1);
	
	self.overrideName = "party"..self:GetID();
	
	UnitFrame_SetUnit(self, "partypet"..self:GetID(), _G[prefix.."HealthBar"], _G[prefix.."ManaBar"]);
	UnitFrame_SetUnit(_G[prefix.."PetFrame"], "party"..self:GetID(), _G[prefix.."PetFrameHealthBar"], nil);
	PartyMemberFrame_UpdateMember(self);
	
	UnitFrame_Update(self)
end

function PartyMemberFrame_OnLoad (self)
	self.statusCounter = 0;
	self.statusSign = -1;
	self.unitHPPercent = 1;
	PartyMemberFrame_UpdateMember(self);
	PartyMemberFrame_UpdateLeader(self);
	self:RegisterEvent("PLAYER_ENTERING_WORLD");
	self:RegisterEvent("PARTY_MEMBERS_CHANGED");
	self:RegisterEvent("PARTY_LEADER_CHANGED");
	self:RegisterEvent("PARTY_LOOT_METHOD_CHANGED");
	self:RegisterEvent("MUTELIST_UPDATE");
	self:RegisterEvent("IGNORELIST_UPDATE");
	self:RegisterEvent("UNIT_FACTION");
	self:RegisterEvent("UNIT_AURA");
	self:RegisterEvent("UNIT_PET");
	self:RegisterEvent("VOICE_START");
	self:RegisterEvent("VOICE_STOP");
	self:RegisterEvent("VARIABLES_LOADED");
	self:RegisterEvent("VOICE_STATUS_UPDATE");
	self:RegisterEvent("READY_CHECK");
	self:RegisterEvent("READY_CHECK_CONFIRM");
	self:RegisterEvent("READY_CHECK_FINISHED");
	self:RegisterEvent("UNIT_ENTERED_VEHICLE");
	self:RegisterEvent("UNIT_EXITED_VEHICLE");
	self:RegisterEvent("UNIT_HEALTH");

	local showmenu = function()
		ToggleDropDownMenu(1, nil, getglobal("PartyMemberFrame"..self:GetID().."DropDown"), self:GetName(), 47, 15);
	end
	SecureUnitButton_OnLoad(self, "party"..self:GetID(), showmenu);
	
	if UnitHasVehicleUI("party"..self:GetID()) then
		local vehicleType = UnitVehicleSkin("party"..self:GetID());
		PartyMemberFrame_ToVehicleArt(self, vehicleType);
	else
		PartyMemberFrame_ToPlayerArt(self);
	end
end

function PartyMemberFrame_UpdateMember (self)
	if HIDE_PARTY_INTERFACE == "1" and GetNumRaidMembers() > 0 then
		self:Hide();
		return;
	end
	local id = self:GetID();
	if GetPartyMember(id) then
		self:Show();

		UnitFrame_Update(self);

		local masterIcon = getglobal(self:GetName().."MasterIcon");
		local lootMethod;
		local lootMaster;
		lootMethod, lootMaster = GetLootMethod();
		if id == lootMaster then
			masterIcon:Show();
		else
			masterIcon:Hide();
		end
	else
		self:Hide();
	end
	PartyMemberFrame_UpdatePvPStatus(self);
	RefreshBuffs(self, 0, "party"..id);
	PartyMemberFrame_UpdateVoiceStatus(self);
	PartyMemberFrame_UpdatePet(self);
	PartyMemberFrame_UpdateReadyCheck(self);
	PartyMemberFrame_UpdateOnlineStatus(self);
	UpdatePartyMemberBackground();
end

function PartyMemberFrame_UpdatePet (self, id)
	if not id then
		id = self:GetID();
	end
	
	local frameName = "PartyMemberFrame"..id;
	local petFrame = getglobal("PartyMemberFrame"..id.."PetFrame");
	
	if UnitIsConnected("party"..id) and UnitExists("partypet"..id) and SHOW_PARTY_PETS == "1" then
		petFrame:Show();
		petFrame:SetPoint("TOPLEFT", frameName, "TOPLEFT", 23, -43);
	else
		petFrame:Hide();
		petFrame:SetPoint("TOPLEFT", frameName, "TOPLEFT", 23, -27);
	end
	
	PartyMemberFrame_RefreshPetBuffs(self, id);
	UpdatePartyMemberBackground();
end

function PartyMemberFrame_UpdateMemberHealth (self, elapsed)
	if (self.unitHPPercent > 0) and (self.unitHPPercent <= 0.2) then
		local alpha = 255;
		local counter = self.statusCounter + elapsed;
		local sign    = self.statusSign;

		if counter > 0.5 then
			sign = -sign;
			self.statusSign = sign;
		end
		counter = mod(counter, 0.5);
		self.statusCounter = counter;

		if sign == 1 then
			alpha = (127  + (counter * 256)) / 255;
		else
			alpha = (255 - (counter * 256)) / 255;
		end
		getglobal(self:GetName().."Portrait"):SetAlpha(alpha);
	end
end

function PartyMemberFrame_UpdateLeader (self)
	local id = self:GetID();
	local icon = getglobal("PartyMemberFrame"..id.."LeaderIcon");
	if GetPartyLeaderIndex() == id then
		icon:Show();
	else
		icon:Hide();
	end
end

function PartyMemberFrame_UpdatePvPStatus (self)
	local id = self:GetID();
	local unit = "party"..id;
	local icon = getglobal("PartyMemberFrame"..id.."PVPIcon");
	local factionGroup = UnitFactionGroup(unit);
	if UnitIsPVPFreeForAll(unit) then
		icon:SetTexture("Interface\\TargetingFrame\\UI-PVP-FFA");
		icon:Show();	
	elseif factionGroup and UnitIsPVP(unit) then
		icon:SetTexture("Interface\\GroupFrame\\UI-Group-PVP-"..factionGroup);
		icon:Show();
	else
		icon:Hide();
	end
end

function PartyMemberFrame_UpdateVoiceStatus (self)
	local id = self:GetID();
	if not UnitName("party"..id) then
		--No need to update if the frame doesn't have a unit.
		return;
	end
	
	local mode;
	local inInstance, instanceType = IsInInstance();
	
	if (instanceType == "pvp") or (instanceType == "arena") then
		mode = "Battleground";
	elseif GetNumRaidMembers() > 0 then
		mode = "raid";
	else
		mode = "party";
	end
	local status = GetVoiceStatus("party"..id, mode);
	local statusIcon = getglobal("PartyMemberFrame"..id.."Speaker");
	local muted = GetMuteStatus("party"..id, mode);
	local mutedIcon = getglobal("PartyMemberFrame"..id.."SpeakerMuted");

	getglobal("PartyMemberFrame"..id.."SpeakerOn"):SetVertexColor(0.7, 0.7, 0.7);
	if status then
		statusIcon:Show();
	else
		statusIcon:Hide();
	end
	if muted then
		mutedIcon:Show();
	else
		mutedIcon:Hide();
	end
	-- Update the talking speaker thingie if they are talking or not.
	local speaker = getglobal("PartyMemberFrame"..id.."SpeakerFrame");
	local state = UnitIsTalking(UnitName("party"..id));
	if state then
		VoiceChat_Animate(speaker, 1);
		speaker:Show();
	else
		VoiceChat_Animate(speaker, nil);
		speaker:Hide();
	end
end

function PartyMemberFrame_UpdateReadyCheck (self)
	local id = self:GetID();
	local partyID = "party"..id;

	local readyCheckFrame = getglobal("PartyMemberFrame"..id.."ReadyCheck");
	local readyCheckStatus = GetReadyCheckStatus(partyID);
	if UnitName(partyID) and UnitIsConnected(partyID) and readyCheckStatus then
		if readyCheckStatus == "ready" then
			ReadyCheck_Confirm(readyCheckFrame, 1);
		elseif readyCheckStatus == "notready" then
			ReadyCheck_Confirm(readyCheckFrame, 0);
		else -- "waiting"
			ReadyCheck_Start(readyCheckFrame);
		end
	else
		readyCheckFrame:Hide();
	end
end

function PartyMemberFrame_OnEvent(self, event, ...)
	UnitFrame_OnEvent(self, event, ...);
	
	local arg1, arg2, arg3 = ...;
	local selfID = self:GetID();
	
	if event == "PLAYER_ENTERING_WORLD" then
		if GetPartyMember(self:GetID()) then
			PartyMemberFrame_UpdateMember(self);
			PartyMemberFrame_UpdateOnlineStatus(self);
			return;
		end
	end

	if event == "PARTY_MEMBERS_CHANGED" then
		PartyMemberFrame_UpdateMember(self);
		return;
	end
	
	if event == "PARTY_LEADER_CHANGED" then
		PartyMemberFrame_UpdateLeader(self);
		return;
	end

	if event == "PARTY_LOOT_METHOD_CHANGED" then
		local lootMethod;
		local lootMaster;
		lootMethod, lootMaster = GetLootMethod();
		if selfID == lootMaster then
			getglobal(self:GetName().."MasterIcon"):Show();
		else
			getglobal(self:GetName().."MasterIcon"):Hide();
		end
		return;
	end

	if event == "MUTELIST_UPDATE" or event == "IGNORELIST_UPDATE" then
		PartyMemberFrame_UpdateVoiceStatus(self);
	end

	local unit = "party"..self:GetID();
	local unitPet = "partypet"..self:GetID();

	if event == "UNIT_FACTION" then
		if arg1 == unit then
			PartyMemberFrame_UpdatePvPStatus(self);
		end
		return;
	end

	if event =="UNIT_AURA" then
		if arg1 == unit then
			RefreshBuffs(self, 0, unit);
			if ( PartyMemberBuffTooltip:IsShown() and
				selfID == PartyMemberBuffTooltip:GetID() ) then
				PartyMemberBuffTooltip_Update(self);
			end
		else
			if arg1 == unitPet then
				PartyMemberFrame_RefreshPetBuffs(self);
			end
		end
		return;
	end

	if event =="UNIT_PET" then
		if arg1 == unit then
			PartyMemberFrame_UpdatePet(self);
		end
		return;
	end

	if ( event == "READY_CHECK" or
		 event == "READY_CHECK_CONFIRM" ) then
		PartyMemberFrame_UpdateReadyCheck(self);
		return;
	elseif event == "READY_CHECK_FINISHED" then
		if GetPartyMember(self:GetID()) then
			ReadyCheck_Finish(getglobal("PartyMemberFrame"..self:GetID().."ReadyCheck"));
		end
		return;
	end

	local speaker = getglobal(self:GetName().."SpeakerFrame");
	if event == "VOICE_START" then
		if arg1 == unit then
			speaker.timer = nil;
			UIFrameFadeIn(speaker, 0.2, speaker:GetAlpha(), 1);
			VoiceChat_Animate(speaker, 1);
		end
	elseif event == "VOICE_STOP" then
		if arg1 == unit then
			speaker.timer = VOICECHAT_DELAY;
			VoiceChat_Animate(speaker, nil);
		end
	elseif event == "VARIABLES_LOADED" then
		PartyMemberFrame_UpdatePet(self);
		PartyMemberFrame_UpdateVoiceStatus(self);
	elseif event == "VOICE_STATUS_UPDATE" then
		PartyMemberFrame_UpdateVoiceStatus(self);
	elseif event == "UNIT_ENTERED_VEHICLE" then
		if arg1 == "party"..selfID then
			if arg2 then
				PartyMemberFrame_ToVehicleArt(self, arg3);
			else
				PartyMemberFrame_ToPlayerArt(self);
			end
		end
	elseif event == "UNIT_EXITED_VEHICLE" then
		if arg1 == "party"..selfID then
			PartyMemberFrame_ToPlayerArt(self);
		end
	elseif ( event == "UNIT_HEALTH" ) and ( arg1 == "party"..selfID ) then
		PartyMemberFrame_UpdateOnlineStatus(self);
	end
end

function PartyMemberFrame_OnUpdate (self, elapsed)
	PartyMemberFrame_UpdateMemberHealth(self, elapsed);
	local partyStatus = getglobal(self:GetName().."Status");
	if self.hasDispellable then
		partyStatus:Show();
		partyStatus:SetAlpha(BuffFrame.BuffAlphaValue);
		if self.debuffCountdown and self.debuffCountdown > 0 then
			self.debuffCountdown = self.debuffCountdown - elapsed;
		else
			partyStatus:Hide();
		end
	else
		partyStatus:Hide();
	end
end

function PartyMemberFrame_RefreshPetBuffs (self, id)
	if not id then
		id = self:GetID();
	end
	RefreshBuffs(getglobal("PartyMemberFrame"..id.."PetFrame"), 0, "partypet"..id)
end

function PartyMemberBuffTooltip_Update (self)
	local name, rank, icon;
	local numBuffs = 0;
	local numDebuffs = 0;
	local index = 1;
	
	PartyMemberBuffTooltip:SetID(self:GetID());
	
	for i=1, MAX_PARTY_TOOLTIP_BUFFS do
		name, rank, icon = UnitBuff(self.unit, i);
		if icon then
			getglobal("PartyMemberBuffTooltipBuff"..index.."Icon"):SetTexture(icon);
			getglobal("PartyMemberBuffTooltipBuff"..index.."Border"):Hide();
			getglobal("PartyMemberBuffTooltipBuff"..index):Show();
			index = index + 1;
			numBuffs = numBuffs + 1;
		end
	end
	for i=index, MAX_PARTY_TOOLTIP_BUFFS do
		getglobal("PartyMemberBuffTooltipBuff"..i):Hide();
	end

	if numBuffs == 0 then
		PartyMemberBuffTooltipDebuff1:SetPoint("TOP", "PartyMemberBuffTooltipBuff1", "TOP", 0, 0);
	elseif numBuffs <= 8 then
		PartyMemberBuffTooltipDebuff1:SetPoint("TOP", "PartyMemberBuffTooltipBuff1", "BOTTOM", 0, -2);
	else
		PartyMemberBuffTooltipDebuff1:SetPoint("TOP", "PartyMemberBuffTooltipBuff9", "BOTTOM", 0, -2);
	end

	index = 1;

	local debuffButton, debuffStack, debuffType, color, countdown;
	for i=1, MAX_PARTY_TOOLTIP_DEBUFFS do
		local debuffBorder = getglobal("PartyMemberBuffTooltipDebuff"..index.."Border")
		local partyDebuff = getglobal("PartyMemberBuffTooltipDebuff"..index.."Icon");
		name, rank, icon, debuffStack, debuffType = UnitDebuff(self.unit, i);		
		if icon then
			partyDebuff:SetTexture(icon);
			if debuffType then
				color = DebuffTypeColor[debuffType];
			else
				color = DebuffTypeColor["none"];
			end
			debuffBorder:SetVertexColor(color.r, color.g, color.b);
			getglobal("PartyMemberBuffTooltipDebuff"..index):Show();
			numDebuffs = numDebuffs + 1;
			index = index + 1;
		end
	end
	for i=index, MAX_PARTY_TOOLTIP_DEBUFFS do
		getglobal("PartyMemberBuffTooltipDebuff"..i):Hide();
	end

	-- Size the tooltip
	local rows = ceil(numBuffs / 8) + ceil(numDebuffs / 8);
	local columns = min(8, max(numBuffs, numDebuffs));
	if (rows > 0) and (columns > 0) then
		PartyMemberBuffTooltip:SetWidth( (columns * 17) + 15 );
		PartyMemberBuffTooltip:SetHeight( (rows * 17) + 15 );
		PartyMemberBuffTooltip:Show();
	else
		PartyMemberBuffTooltip:Hide();
	end
end

function PartyMemberHealthCheck (self, value)
	local prefix = self:GetParent():GetName();
	local unitHPMin, unitHPMax, unitCurrHP;
	unitHPMin, unitHPMax = self:GetMinMaxValues();
	local parentName = self:GetParent():GetName();
	
	unitCurrHP = self:GetValue();
	if unitHPMax > 0 then
		self:GetParent().unitHPPercent = unitCurrHP / unitHPMax;
	else
		self:GetParent().unitHPPercent = 0;
	end
	if UnitIsDead("party"..self:GetParent():GetID()) then
		getglobal(prefix.."Portrait"):SetVertexColor(0.35, 0.35, 0.35, 1.0);
	elseif UnitIsGhost("party"..self:GetParent():GetID()) then
		getglobal(prefix.."Portrait"):SetVertexColor(0.2, 0.2, 0.75, 1.0);
	elseif (self:GetParent().unitHPPercent > 0) and (self:GetParent().unitHPPercent <= 0.2) then
		getglobal(prefix.."Portrait"):SetVertexColor(1.0, 0.0, 0.0);
	else
		getglobal(prefix.."Portrait"):SetVertexColor(1.0, 1.0, 1.0, 1.0);
	end
end

function PartyFrameDropDown_OnLoad (self)
	UIDropDownMenu_Initialize(self, PartyFrameDropDown_Initialize, "MENU");
end

function PartyFrameDropDown_Initialize (self)
	local dropdown;
	if UIDROPDOWNMENU_OPEN_MENU then
		dropdown = getglobal(UIDROPDOWNMENU_OPEN_MENU);
	else
		dropdown = self;
	end
	UnitPopup_ShowMenu(dropdown, "PARTY", "party"..dropdown:GetParent():GetID());
end

function UpdatePartyMemberBackground ()
	if not PartyMemberBackground then
		return;
	end
	if SHOW_PARTY_BACKGROUND == "1" and GetNumPartyMembers() > 0 and not(HIDE_PARTY_INTERFACE == "1" and (GetNumRaidMembers() > 0)) then
		if getglobal("PartyMemberFrame"..GetNumPartyMembers().."PetFrame"):IsShown() then
			PartyMemberBackground:SetPoint("BOTTOMLEFT", "PartyMemberFrame"..GetNumPartyMembers(), "BOTTOMLEFT", -5, -21);
		else
			PartyMemberBackground:SetPoint("BOTTOMLEFT", "PartyMemberFrame"..GetNumPartyMembers(), "BOTTOMLEFT", -5, -5);
		end
		PartyMemberBackground:Show();
	else
		PartyMemberBackground:Hide();
	end
end

function PartyMemberBackground_ToggleOpacity ()
	if OpacityFrame:IsShown() then
		OpacityFrame:Hide();
		return;
	end
	OpacityFrame:ClearAllPoints();
	OpacityFrame:SetPoint("TOPLEFT", "PartyMemberBackground", "TOPRIGHT", 0, 7);
	OpacityFrame.opacityFunc = PartyMemberBackground_SetOpacity;
	OpacityFrame.saveOpacityFunc = PartyMemberBackground_SaveOpacity;
	OpacityFrame:Show();
end

function PartyMemberBackground_SetOpacity ()
	local alpha = 1.0 - OpacityFrameSlider:GetValue();
	PartyMemberBackground:SetAlpha(alpha);
end

function PartyMemberBackground_SaveOpacity ()
	PARTYBACKGROUND_OPACITY = OpacityFrameSlider:GetValue();
end

function PartyMemberFrame_UpdateStatusBarText ()
	local lockText = nil;
	if SHOW_PARTY_TEXT == "1" then
		lockText = 1;	
	end
	for i=1, MAX_PARTY_MEMBERS do
		getglobal("PartyMemberFrame"..i.."HealthBar").forceShow = lockText;
		getglobal("PartyMemberFrame"..i.."ManaBar").forceShow = lockText;
		if lockText then
			getglobal("PartyMemberFrame"..i.."HealthBarText"):Show();
			getglobal("PartyMemberFrame"..i.."ManaBarText"):Show();
		end
	end
end

function PartyMemberFrame_UpdateOnlineStatus(self)
	if not UnitIsConnected("party"..self:GetID()) then
		-- Handle disconnected state
		local selfName = self:GetName();
		local healthBar = _G[selfName.."HealthBar"];
		local unitHPMin, unitHPMax = healthBar:GetMinMaxValues();
		
		healthBar:SetValue(unitHPMax);
		healthBar:SetStatusBarColor(0.5, 0.5, 0.5);
		SetDesaturation(getglobal(selfName.."Portrait"), 1);
		getglobal(selfName.."Disconnect"):Show();
		getglobal(selfName.."PetFrame"):Hide();
		return;
	else
		local selfName = self:GetName();
		SetDesaturation(getglobal(selfName.."Portrait"), nil);
		getglobal(selfName.."Disconnect"):Hide();
	end
end