----------------------------------------------------------------------------
--	Ranked Matchmaking AI v1.1 NewStructure
--	Author: adamqqq		Email:adamqqq@163.com
----------------------------------------------------------------------------
--------------------------------------
-- 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[1],
	Abilities[2],
	Abilities[1],
	Abilities[4],
	Abilities[1],
	Abilities[3],
	Abilities[3],
	"talent",
	Abilities[3],
	Abilities[4],
	Abilities[2],
	Abilities[2],
	"talent",
	Abilities[2],
	"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[6]
	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 function CanCast2(t)
	if AbilityExtensions:IsOnSameTeam(npcBot, t) then
		return AbilityExtensions:AllyCanCast(t) and not AbilityExtensions:DontInterruptAlly(t) and t:GetAttackTarget() == nil
	else
		return AbilityExtensions:NormalCanCast(t) and
			not AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot, 600, false):Any(function(t)
				local target = t:GetAttackTarget()
				return target == t
			end)
	end
end

local CanCast = { utility.NCanCast, CanCast2, utility.NCanCast, AbilityExtensions.NormalCanCastFunction }
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 not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange();
	local Damage = ability:GetAbilityDamage();
	local Radius = ability:GetAOERadius()
	local CastPoint = ability:GetCastPoint() + ability:GetSpecialValueFloat("delay");


	local allys = npcBot:GetNearbyHeroes(1200, 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)
	local tower = npcBot:GetNearbyTowers(CastRange + 300, true)
	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	--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) 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 farming and can kill 3+ creeps
	if (npcBot:GetActiveMode() == BOT_MODE_FARM)
	then
		if ((ManaPercentage > 0.5 or npcBot:GetMana() > ComboMana))
		then
			local locationAoE = npcBot:FindAoELocation(true, false, npcBot:GetLocation(), CastRange, Radius, CastPoint, 0);
			if (locationAoE.count >= 3) then
				return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
			end
		end
	end

	-- If we're pushing or defending a lane and can hit 4+ creeps
	if (npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_BOT or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_BOT)
	then
		if ((ManaPercentage > 0.5 or npcBot:GetMana() > ComboMana))
		then
			if (#tower >= 1)
			then
				return BOT_ACTION_DESIRE_LOW, tower[1]:GetLocation();
			end

			local locationAoE = npcBot:FindAoELocation(true, false, npcBot:GetLocation(), CastRange, Radius, CastPoint, 0);
			if (locationAoE.count >= 4)
			then
				return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
			end
		end
	end

	-- LANING last hit
	if (npcBot:GetActiveMode() == BOT_MODE_LANING)
	then
		if ((ManaPercentage > 0.65 or npcBot:GetMana() > ComboMana))
		then
			local locationAoE = npcBot:FindAoELocation(true, false, npcBot:GetLocation(), CastRange, Radius, 0, Damage);

			if (locationAoE.count >= 1 and GetUnitToLocationDistance(npcBot, locationAoE.targetloc) <= CastRange)
			then
				return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
			end
		end

		if ((ManaPercentage > 0.5 or npcBot:GetMana() > ComboMana) and ability:GetLevel() >= 3)
		then
			local locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, 0, 0);
			if (locationAoE.count >= 4 and GetUnitToLocationDistance(npcBot, locationAoE.targetloc) <= CastRange)
			then
				return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
			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 locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, CastPoint, 0);
		if (locationAoE.count >= 2) then
			return BOT_ACTION_DESIRE_MODERATE, locationAoE.targetloc;
		end

		local npcTarget = npcBot:GetTarget();
		if (npcTarget ~= nil)
		then
			if (CanCast[abilityNumber](npcTarget))
			then
				return BOT_ACTION_DESIRE_MODERATE, npcTarget:GetExtrapolatedLocation(CastPoint);
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;
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 = 0;
	local CastPoint = ability:GetCastPoint();

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(CastRange + 300, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	--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:GetMaxHealth() < 0.5 and npcBot:GetMana() > ComboMana)
				then
					return BOT_ACTION_DESIRE_HIGH, WeakestEnemy;
				end
			end
		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;

		for _, npcEnemy in pairs(enemys) do
			if (CanCast[abilityNumber](npcEnemy) and not enemyDisabled(npcEnemy))
			then
				local Damage2 = npcEnemy:GetEstimatedDamageToTarget(false, npcBot, 3.0, DAMAGE_TYPE_PHYSICAL);
				if (Damage2 > nMostDangerousDamage)
				then
					nMostDangerousDamage = Damage2;
					npcMostDangerousEnemy = npcEnemy;
				end
			end
		end

		if (npcMostDangerousEnemy ~= nil)
		then
			return BOT_ACTION_DESIRE_HIGH, npcMostDangerousEnemy;
		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
		for _, npcEnemy in pairs(enemys) do
			if (npcBot:WasRecentlyDamagedByHero(npcEnemy, 2.0))
			then
				if (CanCast[abilityNumber](npcEnemy) and not enemyDisabled(npcEnemy))
				then
					return BOT_ACTION_DESIRE_HIGH, npcEnemy;
				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 npcEnemy = npcBot:GetTarget();

		if (npcEnemy ~= nil)
		then
			local allys = npcEnemy:GetNearbyHeroes(600, false, BOT_MODE_ATTACK);

			if (CanCast[abilityNumber](npcEnemy) and not enemyDisabled(npcEnemy))
			then
				return BOT_ACTION_DESIRE_HIGH, npcEnemy
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;
end

function GetAbilityPoint()
	local trees = npcBot:GetNearbyTrees(600)
	if (#trees >= 1)
	then
		return BOT_ACTION_DESIRE_LOW, GetTreeLocation(trees[1])
	else
		return BOT_ACTION_DESIRE_LOW, npcBot:GetXUnitsInBehind(100)
	end
end

Consider[3] = function()
	local abilityNumber = 3
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

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

	local CastRange = 1000
	local Damage = 0
	local Radius = ability:GetAOERadius()
	local CastPoint = ability:GetCastPoint()


	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(CastRange + 300, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local tower = npcBot:GetNearbyTowers(1600, true)
	local tower2 = npcBot:GetNearbyTowers(1600, false)
	--------------------------------------
	-- 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
		if (npcBot:WasRecentlyDamagedByAnyHero(2.0))
		then
			return BOT_ACTION_DESIRE_MODERATE, npcBot:GetLocation()
		end
	end



	-- If we're pushing or defending a lane and can hit 4+ creeps
	if (npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_BOT or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_BOT)
	then
		if (tower ~= nil and GetUnitToUnitDistance(npcBot, tower[1]) >= 800) or
			(tower2 ~= nil and GetUnitToUnitDistance(npcBot, tower2[1]) >= 400 and #enemys >= 1)
		then
			return GetAbilityPoint()
		end
	end

	--[[if ( npcBot:GetActiveMode() == BOT_MODE_LANING ) 
	then
		if(ManaPercentage>0.5 or npcBot:GetMana()>ComboMana and #enemys>=1)
		then
			return GetAbilityPoint()
		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 and GetUnitToUnitDistance(npcBot, npcTarget) <= 1400 and #enemys >= 2)
		then
			return GetAbilityPoint()
		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
	end

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

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(CastRange + 300, true, BOT_MODE_NONE)
	enemys = AbilityExtensions:Filter(enemys, function(t)
		return not t:HasModifier("modifier_pudge_life_drain")
	end)
	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))
			then
				if (
					WeakestEnemy:GetHealth() / WeakestEnemy:GetMaxHealth() < 0.8 or WeakestEnemy:HasModifier("modifier_pugna_decrepify")
					)
					and GetUnitToUnitDistance(npcBot, WeakestEnemy) < CastRange - 200
				then
					return BOT_ACTION_DESIRE_LOW, WeakestEnemy;
				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 npcEnemy = npcBot:GetTarget();

		if (npcEnemy ~= nil)
		then
			if (CanCast[abilityNumber](npcEnemy) and GetUnitToUnitDistance(npcBot, npcEnemy) < CastRange - 200)
			then
				return BOT_ACTION_DESIRE_LOW, npcEnemy
			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
