-- Reset if spec changed or slash command
function PowaAuras:ResetTalentScan(unit)
	if (unit == nil) then
		table.wipe(self.InspectedRoles);
		table.wipe(self.FixRoles);
		return;
	end
	local unitName = UnitName(unit);
	if (unitName == nil) then return; end
	--self:Message("Resetting inspect for ",unitName);
	self.InspectedRoles[unitName] = nil;
	self.FixRoles[unitName] = nil;
end


function PowaAuras:TrimInspected()
	for unitName, _ in pairs(self.InspectedRoles) do
		if (self.GroupNames[unitName] == nil) then
			self.InspectedRoles[unitName] = nil;
			self.FixRoles[unitName] = nil;
		end
	end
	self.InspectsDone = nil;
	self.InspectAgain = GetTime() + self.InspectDelay;
end


-- If timeout after talent tree server request
function PowaAuras:SetRoleUndefined(unit)
	local unitName = UnitName(unit);
	if (unitName == nil) then return; end
	self.InspectedRoles[unitName] = nil;
end


--
function PowaAuras:ShouldBeInspected(unit)
	if ("focus" == unit or self.GroupUnits[unit]==nil) then
		return false;
	end

	local class = self.GroupUnits[unit].Class;
	if (class=="ROGUE") or (class=="HUNTER") or (class=="MAGE") or (class=="WARLOCK") or (class=="DEATHKNIGHT") then
		return false;
	end
	
	local name = self.GroupUnits[unit].Name;
	--self:Message("ShouldBeInspected? ",unit, " - ", name);

	if (self.InspectedRoles[name] ~= nil) then
		return false;
	end

	if (not UnitIsConnected(unit)) then
		self.InspectSkipped = true;
		return false;
	end
	
	if (not CheckInteractDistance(unit, 1)) then
		self.InspectSkipped = true;
		return false;
	end

	return true;
end


--
function PowaAuras:TryInspectNext()
	self.InspectSkipped = false;
	if (not PowaMisc.AllowInspections) then
		self.NextInspectUnit = nil;
		self.InspectsDone = true;
		return;
	end
	for unit, unitInfo in pairs(self.GroupUnits) do
		if (self:ShouldBeInspected(unit)) then
			if (UnitIsUnit(unit,"player")) then
				self.NextInspectUnit = "player";
				self:InspectRole();
			else
				self.NextInspectTimeOut = GetTime() + self.InspectTimeOut;
				self.NextInspectUnit = unit;
				NotifyInspect(unit);
				--self:Message("Inspect requested for ",unitInfo.Name);
			end
			return;
		end
	end
	self.NextInspectUnit = nil;
	self.InspectsDone = not self.InspectSkipped;
end


function PowaAuras:InspectRole()

	if (self.NextInspectUnit == nil) then
		return;
	end
	local role = self:InspectUnit(self.NextInspectUnit);
	--self:Message("Role=",self.Text.Role[role]);
	return role;
end

function PowaAuras:InspectUnit(unit)

	local isInspect = (unit ~= "player");

	if (isInspect) then
		ClearInspectPlayer();
	end
	self.NextInspectUnit = nil;

	local unitInfo = self.GroupUnits[unit];
	if (unitInfo == nil) then
		--self:Message(" Not Found!");
		return;
	end

	--self:Message("InspectRole: ",unitInfo.Name, " (", unit,")");

	local activeTree = GetActiveTalentGroup(isInspect);
	local _, _, points1 = GetTalentTabInfo(1, isInspect, false, activeTree);
	local _, _, points2 = GetTalentTabInfo(2, isInspect, false, activeTree);
	local _, _, points3 = GetTalentTabInfo(3, isInspect, false, activeTree);
	
	local role;

	if (unitInfo.Class=="PRIEST") then
		-- 1 = Disc, 2 = Holy, 3 = Shadow
		if (points1 > points3 or points2 > points3)	 then
			role = "RoleHealer";
		else
			role = "RoleRangeDps";
		end

	elseif (unitInfo.Class=="WARRIOR") then
		-- Waffen, Furor, Schutz
		if (points1 > points3
		or points2 > points3)	 then
			role = "RoleMeleDps";
		else
			role = "RoleTank";
		end

	elseif (unitInfo.Class=="DRUID") then
		-- 1 = Gleichgewicht, 2 = Wilder Kampf, 3 = Wiederherstellung
		if (points1 > points2 and points1 > points3) then
			role = "RoleRangeDps";
		elseif(points3 > points2) then
			role = "RoleHealer";
		else
			-- "Natürliche Reaktion" geskillt => Wahrsch. Tank?
			local _, _, _, _, rank = GetTalentInfo(2, 16, isInspect, false, activeTree);
			if (rank > 0) then
				role = "RoleTank";
			else
				role = "RoleMeleDps";
			end
		end

	elseif (unitInfo.Class=="PALADIN") then
		-- 1 = Heilig, 2 = Schutz, 3 = Vergeltung
		if (points1 > points2 and points1 > points3) then
			role = "RoleHealer";
		elseif (points2 > points3) then
			role = "RoleTank";
		else
			role = "RoleMeleDps";
		end

	elseif (unitInfo.Class=="SHAMAN") then
	  -- 1 = Elementar, 2 = Verstärker, 3 = Wiederherstellung
		if (points1 > points2 and points1 > points3) then
			role = "RoleRangeDps";
		elseif (points2 > points3) then
			role = "RoleMeleDps";
		else
			role = "RoleHealer";
		end
	end
	self.InspectedRoles[unitInfo.Name] = role;
	return role;
end



function PowaAuras:DetermineRole(unit)
	if (unit==nil) then return; end
	local _, class = UnitClass(unit);

	if (class=="ROGUE") then
		return "RoleMeleDps", "Preset";
	elseif (class=="HUNTER") then
		return "RoleRangeDps", "Preset";
	elseif (class=="MAGE") then
		return "RoleRangeDps", "Preset";
	elseif (class=="WARLOCK") then
		return "RoleRangeDps", "Preset";
	end

	local unitName = UnitName(unit);
	if (self.InspectedRoles[unitName] ~= nil) then
		return self.InspectedRoles[unitName], "Inspected";
	end

	if (self.FixRoles[unitName] ~= nil) then
		return self.FixRoles[unitName], "Fixed";
	end

	if (class=="DEATHKNIGHT") then
		local _, _, buffExist = UnitBuff(unit, self.Spells.BUFF_FROST_PRESENCE);
		if (buffExist) then
			self.FixRoles[unitName] = "RoleTank";
		else
			self.FixRoles[unitName] = "RoleMeleDps";
		end
		return self.FixRoles[unitName], "Guess";
	elseif (class=="PRIEST") then
		local _, _, buffExist = UnitBuff(unit, self.Spells.SHADOWFORM);
		if (buffExist) then
			self.FixRoles[unitName] = "RoleRangeDps";
			return "RoleRangeDps", "Guess";
		end
		return "RoleHealer", "Guess";

	elseif (class=="WARRIOR") then
		local defense = select(2, UnitDefense(unit)) / UnitLevel(unit);

		if (defense > 2) then
			return "RoleTank", "Guess";
		end
		return "RoleMeleDps", "Guess";

	elseif (class=="DRUID") then
		local _, powerType = UnitPowerType(unit);
		if (powerType == "MANA") then
			_, _, tBuffExist = UnitBuff(unit, self.Spells.MOONKIN_FORM);
			if (tBuffExist) then
				self.FixRoles[unitName] = "RoleRangeDps";
				return "RoleRangeDps", "Guess";
			else
				local _, _, tBuffExist = UnitBuff(unit, self.Spells.TREE_OF_LIFE);
				if (tBuffExist) then
					self.FixRoles[unitName] = "RoleHealer";
				end

				return "RoleHealer", "Guess";
			end
		elseif (powerType == "RAGE") then
			self.FixRoles[unitName] = "RoleTank";
			return "RoleTank", "Guess";
		elseif (powerType == "ENERGY") then
			self.FixRoles[unitName] = "RoleMeleDps";
			return "RoleMeleDps", "Guess";
		end

	elseif (class=="PALADIN") then
		local defense = select(2, UnitDefense(unit)) / UnitLevel(unit);

		if (defense > 2) then
			return "RoleTank", "Guess";
		end
		if (UnitStat(unit, 4) > UnitStat(unit, 1)) then
			return "RoleHealer", "Guess";
		end
		return "RoleMeleDps", "Guess";

	elseif (class=="SHAMAN") then
		if (UnitStat(unit, 2) > UnitStat(unit, 4)) then
			return "RoleMeleDps", "Guess";
		end
		return "RoleHealer", "Guess"; -- Can't tell, assume its a healer

	end

	return nil;
end