----------------------------------------------------------------------------
--	Ranked Matchmaking AI v1.5
--	Author: adamqqq		Email:adamqqq@163.com
--  Contributor: zmcmcc Email:mengzhang@utexas.edu
----------------------------------------------------------------------------
--------------------------------------
-- General Initialization
--------------------------------------
local utility = require(GetScriptDirectory() .. "/utility")
local ability_item_usage_generic = require(GetScriptDirectory() .. "/ability_item_usage_generic")
local AbilityExtensions = require(GetScriptDirectory() .. "/util/AbilityAbstraction")

local debugmode = false
local npcBot = GetBot()
if npcBot == nil or npcBot:IsIllusion() then
	return
end

local Talents = {}
local Abilities = {}
local AbilitiesReal = {}

ability_item_usage_generic.InitAbility(Abilities, AbilitiesReal, Talents)

local AbilityToLevelUp =
{
	Abilities[1],
	Abilities[3],
	Abilities[3],
	Abilities[2],
	Abilities[3],
	Abilities[1],
	Abilities[3],
	Abilities[4],
	Abilities[1],
	"talent",
	Abilities[1],
	Abilities[2],
	Abilities[2],
	Abilities[2],
	"talent",
	Abilities[4],
	"nil",
	Abilities[4],
	"nil",
	"talent",
	"nil",
	"nil",
	"nil",
	"nil",
	"talent",
}
local TalentTree = {
	function()
		return Talents[2]
	end,
	function()
		return Talents[3]
	end,
	function()
		return Talents[5]
	end,
	function()
		return Talents[8]
	end
}

-- check skill build vs current level
utility.CheckAbilityBuild(AbilityToLevelUp)

function BuybackUsageThink()
	ability_item_usage_generic.BuybackUsageThink();
end

function CourierUsageThink()
	ability_item_usage_generic.CourierUsageThink();
end

function AbilityLevelUpThink()
	ability_item_usage_generic.AbilityLevelUpThink2(AbilityToLevelUp, TalentTree)
end

--------------------------------------
-- Ability Usage Thinking
--------------------------------------
local cast = {}
cast.Desire = {}
cast.Target = {}
cast.Type = {}
local Consider = {}
local CanCast = { AbilityExtensions.PhysicalCanCastFunction, function(t)
	if npcBot:GetTeam() == t:GetTeam() then
		return AbilityExtensions:SpellCanCast(t, true, true, true) and not AbilityExtensions:DontInterruptAlly(t) and
			not t:IsMagicImmune()
	else
		return AbilityExtensions:NormalCanCast(t, false, DAMAGE_TYPE_MAGICAL) and
			not t:HasModifier("modifier_antimage_counterspell") and not AbilityExtensions:IsOrGoingToBeSeverelyDisabled(t)
	end
end, nil,
	function(t)
		return t:HasModifier("modifier_obsidian_destroyer_astral_imprisonment_prison") or AbilityExtensions:NormalCanCast(t)
	end }
local enemyDisabled = utility.enemyDisabled

function GetComboDamage()
	return ability_item_usage_generic.GetComboDamage(AbilitiesReal)
end

function GetComboMana()
	return ability_item_usage_generic.GetComboMana(AbilitiesReal)
end

Consider[1] = function()
	local abilityNumber = 1
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if npcBot:IsIllusion() or not ability:IsFullyCastable() or AbilityExtensions:IsPhysicalOutputDisabled(npcBot) then -- destroyer's illusions (from illusion rune or from shadow_demon_disruption) can use the first ability
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange();
	local Damage = ability:GetSpecialValueInt("damage_bonus") + npcBot:GetAttackDamage()


	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(CastRange + 100, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local creeps = npcBot:GetNearbyCreeps(CastRange + 100, true)
	local creeps2 = npcBot:GetNearbyCreeps(300, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)

	if (ability:GetToggleState() == false)
	then
		local t = npcBot:GetAttackTarget()
		if (t ~= nil)
		then
			if npcBot:GetLevel() >= 7
			then
				ability:ToggleAutoCast()
				return BOT_ACTION_DESIRE_NONE, 0;
			end
		end
	end


	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[abilityNumber](WeakestEnemy))
			then
				if (WeakestEnemy:GetHealth() <= WeakestEnemy:GetActualIncomingDamage(GetComboDamage(), DAMAGE_TYPE_ALL))
				then
					return BOT_ACTION_DESIRE_HIGH, WeakestEnemy;
				end
			end
		end
	end
	--------------------------------------
	-- Mode based usage
	--------------------------------------
	if (npcBot:GetActiveMode() == BOT_MODE_LANING)
	then
		if (WeakestCreep ~= nil and ManaPercentage > 0.45)
		then
			if (CreepHealth <= WeakestCreep:GetActualIncomingDamage(Damage, DAMAGE_TYPE_PHYSICAL))
			then
				return BOT_ACTION_DESIRE_LOW, WeakestCreep
			end
		end

	end

	-- If we're farming
	if (npcBot:GetActiveMode() == BOT_MODE_FARM)
	then
		return BOT_ACTION_DESIRE_LOW, WeakestCreep;
	end

	-- If we're going after someone
	if (npcBot:GetActiveMode() == BOT_MODE_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
		npcBot:GetActiveMode() == BOT_MODE_ATTACK)
	then
		local npcEnemy = npcBot:GetTarget();

		if (npcEnemy ~= nil)
		then
			if (CanCast[abilityNumber](npcEnemy) and GetUnitToUnitDistance(npcBot, npcEnemy) < CastRange + 100)
			then
				return BOT_ACTION_DESIRE_MODERATE, npcEnemy;
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;

end

local dazzle_shadow_grave = function()
	local abilityNumber = 2
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange();
	local Damage = ability:GetAbilityDamage();

	local allys = AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot, CastRange + 300, false)
	local enemys2 = AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot, 1000)
	local enemyCount = AbilityExtensions:GetEnemyHeroNumber(npcBot, enemys2)

	for _, npcTarget in pairs(allys) do
		if (npcTarget:GetHealth() / npcTarget:GetMaxHealth() <= 0.2 + 0.05 * enemyCount) and
			AbilityExtensions:IsOrGoingToBeSeverelyDisabled(npcTarget) and CanCast[2](npcTarget)
		then
			return BOT_ACTION_DESIRE_MODERATE, npcTarget
		end
	end

	return BOT_ACTION_DESIRE_NONE

end

local oldConsider2 = function()
	local abilityNumber = 2
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange();
	local Damage = ability:GetAbilityDamage();

	local allys = AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot, CastRange + 300, false)
	local WeakestAlly, AllyHealth = utility.GetWeakestUnit(allys)
	local allys2 = GetUnitList(UNIT_LIST_ALLIED_HEROES)
	local enemys = npcBot:GetNearbyHeroes(CastRange + 300, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local creeps = npcBot:GetNearbyCreeps(CastRange + 300, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)
	local npcTarget

	-- Check for a channeling enemy
	for _, enemy in pairs(enemys) do
		if (enemy:IsChanneling() and CanCast[abilityNumber](enemy))
		then
			return BOT_ACTION_DESIRE_HIGH, enemy
		end
	end

	-- If we're in a teamfight, use it on the scariest enemy
	local tableNearbyAttackingAlliedHeroes = npcBot:GetNearbyHeroes(1000, false, BOT_MODE_ATTACK);
	if (#tableNearbyAttackingAlliedHeroes >= 2)
	then

		local npcMostDangerousEnemy = nil;
		local nMostDangerousDamage = 0;

		local tableNearbyEnemyHeroes = npcBot:GetNearbyHeroes(CastRange, true, BOT_MODE_NONE);
		for _, npcEnemy in pairs(tableNearbyEnemyHeroes) do
			if (CanCast[abilityNumber](npcEnemy) and not AbilityExtensions:IsOrGoingToBeSeverelyDisabled(npcEnemy))
			then
				local Damage2 = npcEnemy:GetEstimatedDamageToTarget(false, npcBot, 3.0, DAMAGE_TYPE_ALL);
				if (Damage2 > nMostDangerousDamage)
				then
					nMostDangerousDamage = Damage2;
					npcMostDangerousEnemy = npcEnemy;
				end
			end
		end

		if (npcMostDangerousEnemy ~= nil and not AbilityExtensions:IsOrGoingToBeSeverelyDisabled(npcMostDangerousEnemy))
		then
			return BOT_ACTION_DESIRE_LOW, npcMostDangerousEnemy;
		end
	end

	local enemys2 = AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot, 1000)
	local enemyCount = AbilityExtensions:GetEnemyHeroNumber(npcBot, enemys2)

	for _, npcTarget in pairs(allys) do
		if (npcTarget:GetHealth() / npcTarget:GetMaxHealth() <= 0.2 + 0.05 * enemyCount) and
			AbilityExtensions:IsOrGoingToBeSeverelyDisabled(npcTarget) and CanCast[2](npcTarget)
		then
			return BOT_ACTION_DESIRE_MODERATE, npcTarget
		end
	end

	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[abilityNumber](WeakestEnemy))
			then
				if (
					HeroHealth <= WeakestEnemy:GetActualIncomingDamage(Damage, DAMAGE_TYPE_MAGICAL) and #allys <= 1 and
						not AbilityExtensions:IsOrGoingToBeSeverelyDisabled(WeakestEnemy))
				then
					return BOT_ACTION_DESIRE_HIGH, WeakestEnemy;
				end
			end
		end
	end

	--------------------------------------
	-- Mode based usage
	--------------------------------------
	-- If we're seriously retreating, see if we can land a stun on someone who's damaged us recently
	if (npcBot:GetActiveMode() == BOT_MODE_RETREAT and npcBot:GetActiveModeDesire() >= BOT_MODE_DESIRE_HIGH)
	then
		local tableNearbyEnemyHeroes = npcBot:GetNearbyHeroes(CastRange, true, BOT_MODE_NONE);
		for _, npcEnemy in pairs(tableNearbyEnemyHeroes) do
			if (npcBot:WasRecentlyDamagedByHero(npcEnemy, 2.0))
			then
				if (CanCast[abilityNumber](npcEnemy) and not AbilityExtensions:IsOrGoingToBeSeverelyDisabled(npcEnemy))
				then
					return BOT_ACTION_DESIRE_HIGH, npcEnemy;
				end
			end
		end
	end

	if (npcBot:GetActiveMode() == BOT_MODE_LANING)
	then
		if (ManaPercentage > 0.4 or npcBot:GetMana() > ComboMana)
		then
			if (WeakestEnemy ~= nil)
			then
				if (
					CanCast[abilityNumber](WeakestEnemy) and GetUnitToUnitDistance(npcBot, WeakestEnemy) < CastRange + 200 and
						not AbilityExtensions:IsOrGoingToBeSeverelyDisabled(WeakestEnemy))
				then
					return BOT_ACTION_DESIRE_LOW, WeakestEnemy
				end
			end
		end
	end

	-- If we're going after someone
	if (npcBot:GetActiveMode() == BOT_MODE_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
		npcBot:GetActiveMode() == BOT_MODE_ATTACK)
	then
		local npcTarget = npcBot:GetTarget();

		if (npcTarget ~= nil)
		then
			if (
				CanCast[abilityNumber](npcTarget) and not AbilityExtensions:IsOrGoingToBeSeverelyDisabled(npcTarget) and
					GetUnitToUnitDistance(npcBot, npcTarget) > 75 * #allys
					and GetUnitToUnitDistance(npcBot, npcTarget) < CastRange + 100)
			then
				return BOT_ACTION_DESIRE_MODERATE, npcTarget
			end
		end

		if (WeakestAlly ~= nil and #enemys >= 2)
		then
			if (AllyHealth / WeakestAlly:GetMaxHealth() < 0.2)
			then
				return BOT_ACTION_DESIRE_MODERATE, WeakestAlly
			end
		end

		if (HealthPercentage < 0.2) then
			return BOT_ACTION_DESIRE_HIGH, npcBot
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0
end

Consider[2] = function()
	local d1, t1 = oldConsider2()
	if d1 ~= 0 then
		return d1, t1
	else
		return dazzle_shadow_grave()
	end
end

--Consider[2]=function()
--
--	local abilityNumber=2
--	--------------------------------------
--	-- Generic Variable Setting
--	--------------------------------------
--	local ability=AbilitiesReal[abilityNumber];
--
--	if not ability:IsFullyCastable() then
--		return BOT_ACTION_DESIRE_NONE, 0;
--	end
--
--	local CastRange = ability:GetCastRange();
--	local Damage = ability:GetAbilityDamage();
--
--	local allys = npcBot:GetNearbyHeroes( CastRange+300, false, BOT_MODE_NONE )
--	local enemys = npcBot:GetNearbyHeroes(CastRange+300,true,BOT_MODE_NONE)
--	local WeakestEnemy,HeroHealth=utility.GetWeakestUnit(enemys)
--	local creeps = npcBot:GetNearbyCreeps(CastRange+300,true)
--	local WeakestCreep,CreepHealth=utility.GetWeakestUnit(creeps)
--
--
--	-- If we're going after someone
--	if ( npcBot:GetActiveMode() == BOT_MODE_ROAM or
--		 npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
--		 npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
--		 npcBot:GetActiveMode() == BOT_MODE_ATTACK )
--	then
--		local npcEnemy = npcBot:GetTarget();
--		if ( npcEnemy ~= nil )
--		then
--			if ( CanCast[abilityNumber]( npcEnemy )  and GetUnitToUnitDistance(npcBot,npcEnemy)< CastRange + 75*#allys)
--			then
--				return BOT_ACTION_DESIRE_MODERATE, npcEnemy;
--			end
--		end
--	end
--
--
--
--	return BOT_ACTION_DESIRE_NONE, 0
--end

Consider[4] = function()

	local abilityNumber = 4
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange() - 100;
	local Damage = ability:GetAbilityDamage();
	local Radius = ability:GetAOERadius() - 80
	local CastPoint = ability:GetCastPoint();

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot, CastRange + 300, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local creeps = npcBot:GetNearbyCreeps(CastRange + 300, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)

	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[abilityNumber](WeakestEnemy) and #enemys >= 2)
			then
				if (
					HeroHealth <= WeakestEnemy:GetActualIncomingDamage(Damage, DAMAGE_TYPE_MAGICAL) or
						(
						HeroHealth <= WeakestEnemy:GetActualIncomingDamage(GetComboDamage(), DAMAGE_TYPE_MAGICAL) and
							npcBot:GetMana() > ComboMana))
				then
					return BOT_ACTION_DESIRE_HIGH, WeakestEnemy:GetExtrapolatedLocation(CastPoint);
				end
			end
		end
	end
	--------------------------------------
	-- Mode based usage
	--------------------------------------

	-- If we're going after someone
	if (npcBot:GetActiveMode() == BOT_MODE_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
		npcBot:GetActiveMode() == BOT_MODE_ATTACK)
	then
		local locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, CastPoint, 0);
		if (#enemys >= 2)
		then
			if npcBot:GetModifierStackCount(npcBot:GetModifierByName("modifier_obsidian_destroyer_astral_imprisonment_charge_counter"))
				> 30
				or
				(
				#enemys >= 3 and
					npcBot:GetModifierStackCount(npcBot:GetModifierByName("modifier_obsidian_destroyer_astral_imprisonment_charge_counter"))
					> 12)
			then
				return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0
end

AbilityExtensions:AutoModifyConsiderFunction(npcBot, Consider, AbilitiesReal)

function AbilityUsageThink()

	-- Check if we're already using an ability
	if (npcBot:IsUsingAbility() or npcBot:IsChanneling() or npcBot:IsSilenced())
	then
		return
	end

	ComboMana = GetComboMana()
	AttackRange = npcBot:GetAttackRange()
	ManaPercentage = npcBot:GetMana() / npcBot:GetMaxMana()
	HealthPercentage = npcBot:GetHealth() / npcBot:GetMaxHealth()

	cast = ability_item_usage_generic.ConsiderAbility(AbilitiesReal, Consider)
	---------------------------------debug--------------------------------------------
	if (debugmode == true)
	then
		ability_item_usage_generic.PrintDebugInfo(AbilitiesReal, cast)
	end
	ability_item_usage_generic.UseAbility(AbilitiesReal, cast)
end

function CourierUsageThink()
	ability_item_usage_generic.CourierUsageThink()
end
