----------------------------------------------------------------------------
--	Ranked Matchmaking AI v1.3 New Structure
--	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[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 = { utility.NCanCast, utility.NCanCast, utility.NCanCast, utility.UCanCast }
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 perDamage = ability:GetSpecialValueInt("strike_damage")
	local Damage = perDamage * ability:GetSpecialValueInt("strikes")
	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 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 (
					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;
				end
			end
		end
	end

	--------------------------------------
	-- Mode based usage
	--------------------------------------
	--protect myself
	local enemys2 = npcBot:GetNearbyHeroes(400, true, BOT_MODE_NONE);
	-- 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) or #enemys2 >
			0)
	then
		for _, npcEnemy in pairs(enemys) do
			if (
				(npcBot:WasRecentlyDamagedByHero(npcEnemy, 2.0) and CanCast[abilityNumber](npcEnemy)) or
					GetUnitToUnitDistance(npcBot, npcEnemy) < 400)
			then
				return BOT_ACTION_DESIRE_HIGH, npcEnemy;
			end
		end
	end

	-- If my mana is enough,use it at enemy
	--[[if ( npcBot:GetActiveMode() == BOT_MODE_LANING ) 
	then
		if(ManaPercentage>0.5 or npcBot:GetMana()>ComboMana)
		then
			if (WeakestEnemy~=nil)
			then
				if ( CanCast[abilityNumber]( WeakestEnemy ) )
				then
					return BOT_ACTION_DESIRE_LOW,WeakestEnemy;
				end
			end
		end
	end]]

	--Last hit
	--[[if ( npcBot:GetActiveMode() == BOT_MODE_LANING ) 
	then
		if(WeakestCreep~=nil)
		then
			if((ManaPercentage>0.5 or npcBot:GetMana()>ComboMana) and GetUnitToUnitDistance(npcBot,WeakestCreep)>=AttackRange+100)
			then
				if(CreepHealth<=WeakestCreep:GetActualIncomingDamage(perDamage,DAMAGE_TYPE_MAGICAL))
				then					
					return BOT_ACTION_DESIRE_LOW,WeakestCreep; 
				end
			end		
		end
	end]]

	-- If we're farming and can hit 2+ creeps and kill 1+
	--[[if ( npcBot:GetActiveMode() == BOT_MODE_FARM )
	then
		if ( #creeps >= 2 ) 
		then
			if(CreepHealth<=WeakestCreep:GetActualIncomingDamage(Damage,DAMAGE_TYPE_MAGICAL) and npcBot:GetMana()>ComboMana)
			then
				return BOT_ACTION_DESIRE_LOW, WeakestCreep;
			end
		end
	end]]

	-- If we're pushing or defending a lane
	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 (#enemys >= 1)
		then
			if (ManaPercentage > 0.5 or npcBot:GetMana() > ComboMana and AbilitiesReal[abilityNumber]:GetLevel() >= 1)
			then
				if (WeakestEnemy ~= nil)
				then
					if (CanCast[abilityNumber](WeakestEnemy) and GetUnitToUnitDistance(npcBot, WeakestEnemy) < CastRange + 75 * #allys)
					then
						return BOT_ACTION_DESIRE_LOW, WeakestEnemy;
					end
				end
			end
		end

		if (#creeps >= 3)
		then
			if (ManaPercentage > 0.5 or npcBot:GetMana() > ComboMana and AbilitiesReal[abilityNumber]:GetLevel() >= 1)
			then
				if (CanCast[abilityNumber](creeps[1]) and GetUnitToUnitDistance(npcBot, creeps[1]) < CastRange + 75 * #allys)
				then
					return BOT_ACTION_DESIRE_LOW, creeps[1];
				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
			if (
				CanCast[abilityNumber](npcEnemy) and not enemyDisabled(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

function GetEarlyLocation(npcEnemy)
	local nPlayerID = npcEnemy:GetPlayerID()
	local infoTable = GetHeroLastSeenInfo(nPlayerID)
	local mostNearlySecond = 4
	local mostNearlyLocation = utility.Fountain(npcEnemy)
	local delta = mostNearlySecond
	for k, t in pairs(infoTable) do
		local time1 = t.time_since_seen
		local location = t.location

		local tempDelta = math.abs(mostNearlySecond - time1)
		if (tempDelta < delta)
		then
			delta = tempDelta
			mostNearlySecond = time1
			mostNearlyLocation = location
		end

		if (time1 >= 3.9 and time1 <= 4.1)
		then
			return location
		end

		if (time1 > 5)
		then
			return mostNearlyLocation
		end
	end

	return mostNearlyLocation
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 CastPoint = ability:GetCastPoint();

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(1600, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local creeps = npcBot:GetNearbyCreeps(1600, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)
	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	-- Check for a channeling enemy
	for _, npcEnemy in pairs(enemys) do
		if (npcEnemy:IsChanneling() and CanCast[abilityNumber](npcEnemy))
		then
			return BOT_ACTION_DESIRE_HIGH, npcEnemy
		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 GetUnitToUnitDistance(npcBot, npcEnemy) < 250 and
						GetUnitToLocationDistance(npcBot, GetEarlyLocation(npcEnemy)) >= 1200 and
						npcEnemy:GetHealth() / npcEnemy:GetMaxHealth() > 0.7)
				then
					return BOT_ACTION_DESIRE_HIGH, npcEnemy;
				end
			end
		end
	end

	-- If we're pushing or defending a lane
	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 (#enemys >= 1 and #enemys > #allys)
		then
			for k, npcEnemy in pairs(enemys) do
				if (GetUnitToLocationDistance(npcBot, GetEarlyLocation(npcEnemy)) >= 3000)
				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 and #allys >= #enemys)
		then
			if (CanCast[abilityNumber](npcEnemy) and GetUnitToLocationDistance(npcBot, GetEarlyLocation(npcEnemy)) <= 500
				and GetUnitToUnitDistance(npcBot, npcEnemy) > 700 and GetUnitToUnitDistance(npcBot, npcEnemy) < CastRange)
			then
				return BOT_ACTION_DESIRE_HIGH, npcEnemy
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;

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 = ability:GetCastRange();
	local Damage = ability:GetAbilityDamage();
	local Radius = ability:GetAOERadius()
	local CastPoint = ability:GetCastPoint();
	local Delay = ability:GetSpecialValueInt("formation_time");

	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)

	--------------------------------------
	-- 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 + Delay + 0.1);
				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
		for _, npcEnemy in pairs(enemys) do
			if (npcBot:WasRecentlyDamagedByAnyHero(2.0))
			then
				return BOT_ACTION_DESIRE_MODERATE, npcBot:GetLocation();
			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, Delay, 0);
		if (locationAoE.count >= 2) then
			return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
		end

		local npcEnemy = npcBot:GetTarget();

		if (npcEnemy ~= nil)
		then
			if (CanCast[abilityNumber](npcEnemy))
			then
				return BOT_ACTION_DESIRE_HIGH, npcEnemy:GetExtrapolatedLocation(CastPoint + Delay + 0.1);
			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();
	local Damage = ability:GetSpecialValueInt("damage_max") * ability:GetSpecialValueInt("duration") * 0.5;
	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 creeps = npcBot:GetNearbyCreeps(CastRange + 300, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)

	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	local channelingEnemies = AbilityExtensions:Filter(enemys, function(t)
		return CanCast[4](t) and AbilityExtensions:IsChannelingAbility(t) and
			AbilityExtensions:IsChannelingBreakWorthAbility(t)
	end)
	channelingEnemies = AbilityExtensions:Max(channelingEnemies,
		function(t) return t:GetCurrentActiveAbility():GetCooldown() end)
	if channelingEnemies and channelingEnemies:GetCurrentActiveAbility():GetCooldown() >= ability:GetCooldown() * 0.7 then
		return BOT_ACTION_DESIRE_MODERATE,
			AbilityExtensions:FindAOELocationAtSingleTarget(npcBot, channelingEnemies, Radius, CastRange, CastPoint)
	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) 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 with LSA
	if (npcBot:GetActiveMode() == BOT_MODE_FARM) then
		local locationAoE = npcBot:FindAoELocation(true, false, npcBot:GetLocation(), CastRange, Radius, 0, Damage);

		if (locationAoE.count >= 8) then
			return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
		end
	end

	-- If we're pushing or defending a lane and can hit 4+ creeps, go for it
	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
		local locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, CastPoint, 0);
		if (locationAoE.count >= 3)
		then
			return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
		end
	end

	-- 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))
				then
					return BOT_ACTION_DESIRE_MODERATE, npcEnemy:GetExtrapolatedLocation(CastPoint);
				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 locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, 0, 0);
		if (locationAoE.count >= 2) then
			return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc;
		end

		local npcEnemy = AbilityExtensions:GetTargetIfGood(npcBot)

		if (npcEnemy ~= nil)
		then
			if CanCast[abilityNumber](npcEnemy) and AbilityExtensions:IsNonIllusionHero(npcBot, npcEnemy)
			then
				return BOT_ACTION_DESIRE_HIGH, npcEnemy:GetExtrapolatedLocation(CastPoint);
			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
