-- Will not cast HoT on unit if the buff still has X seconds left
ONEHITWONDER_HOT_TIME_PREVENTION = 2;


ONEHITWONDER_HOT_SPELLS = {
	[ONEHITWONDER_SPELL_RENEW_NAME] = 15,
	[ONEHITWONDER_SPELL_REJUVENATION_NAME] = 12,
	-- ADD MORE!
};

OneHitWonder_HoTList = {
};

function OneHitWonder_ShouldHoTUnit(unit, spellName, hotDuration)
	local name = UnitName(unit);
	if ( not OneHitWonder_HoTList[name] ) then
		return true;
	elseif ( not OneHitWonder_HoTList[name][spellName] ) then
		return true;
	else
		if ( OneHitWonder_HasUnitEffect(unit, nil, spellName) ) then
			local curTime = GetTime();
			if ( ( curTime - OneHitWonder_HoTList[name][spellName] ) > (hotDuration-ONEHITWONDER_HOT_TIME_PREVENTION) ) then
				return true;
			else
				return false;
			end
		else
			return true;
		end
	end
end

-- returns true if a spell was cast, otherwise false
function OneHitWonder_HoTUnit(unit)
	if ( UnitCanAttack(unit, "player") ) then
		unit = "player";
		--return false;
	end
	if ( UnitIsUnit(unit, "player") ) then
		unit = "player";
	end
	local chosenSpell = nil;
	local chosenDuration = 0;
	for k, v in ONEHITWONDER_HOT_SPELLS do
		if ( OneHitWonder_GetSpellId(k) > -1 ) and ( OneHitWonder_ShouldHoTUnit(unit, k, v) ) then
			chosenSpell = k;
			chosenDuration = v;
			break;
		end
	end
	if ( chosenSpell ) then
		local spellId = OneHitWonder_GetAppropriateSpell(UnitLevel(unit), chosenSpell);
		if ( not UnitCanAttack("target", "player") ) then
			if ( unit == "player" ) then
				local actionId = OneHitWonder_GetActionIdFromSpellId(spellId);
				if ( actionId ) and ( actionId > -1 ) then
					UseAction(actionId, 0, 1);
					return true;
				end
			end
			return false;
		end
		if ( OneHitWonder_CastSpell(spellId) ) then
			SpellTargetUnit(unit);
			local name = UnitName(unit);
			if ( not OneHitWonder_HoTList[unit] ) then
				OneHitWonder_HoTList[unit] = {};
			end
			OneHitWonder_HoTList[unit][chosenSpell] = GetTime();
		end
	end
	return false;
end

OneHitWonder_HoTTimeList = { "player", "party1", "party2", "party3", "party4" };

OneHitWonder_PreEmptiveCandidates = { ONEHITWONDER_CLASS_WARRIOR, ONEHITWONDER_CLASS_PALADIN };

function OneHitWonder_PreEmptiveHoTCandidate(unit)
	if ( unit == "target" ) or (OneHitWonder_IsStringInList(UnitClass(unit), OneHitWonder_PreEmptiveCandidates)) then
		return true;
	else
		return false;
	end
end

function OneHitWonder_HoTTime()
	local loops = 0;
	local currentEntry = nil;
	local hasCast = OneHitWonder_HoTUnit("target");
	while ( not hasCast ) and ( loops < table.getn(OneHitWonder_HoTTimeList) ) do
		currentEntry = table.remove(OneHitWonder_HoTTimeList);
		table.insert(OneHitWonder_HoTTimeList, currentEntry);
		if ( UnitHealth(unit) < UnitHealthMax(unit) ) or ( OneHitWonder_PreEmptiveHoTCandidate(unit) ) then
			hasCast = OneHitWonder_HoTUnit(currentEntry);
		end
		loops = loops + 1;
	end
	return hasCast;
end