----------------------------------------------------------------------------
--	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 role = require(GetScriptDirectory() .. "/util/RoleUtility")
local AbilityHelper = dofile(GetScriptDirectory() .. "/util/AbilityHelper")
local ItemUsage = require(GetScriptDirectory() .. "/util/ItemUsage-New")

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[2],
	Abilities[3],
	Abilities[3],
	Abilities[3],
	Abilities[5],
	Abilities[3],
	Abilities[2],
	Abilities[2],
	Abilities[2],
	"talent",
	Abilities[5],
	Abilities[1],
	Abilities[1],
	"talent",
	Abilities[1],
	"nil",
	Abilities[5],
	"nil",
	"talent",
	"nil",
	"nil",
	"nil",
	"nil",
	"talent",
}

local TalentTree = {
	function()
		return Talents[1]
	end,
	function()
		return Talents[4]
	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
local ComboMana, ManaPercentage

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() - 50
	local CastPoint = ability:GetCastPoint()

	local blink = AbilityExtensions:GetAvailableBlink(npcBot)
	if (blink ~= nil and blink:IsFullyCastable())
	then
		CastRange = CastRange + 1200
		if (npcBot:GetActiveMode() == BOT_MODE_ATTACK)
		then
			local locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, 0, 0);
			if (locationAoE.count >= 2)
			then
				ItemUsage.UseItemOnLocation(npcBot, blink, locationAoE.targetloc);
				return 0
			end
		end
	end


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

	--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
						GetUnitToUnitDistance(npcBot, WeakestEnemy) <= Radius - CastPoint * WeakestEnemy:GetCurrentMovementSpeed())
				then
					return BOT_ACTION_DESIRE_HIGH, WeakestEnemy
				end
			end
		end
	end
	--------------------------------------
	-- Mode based usage
	--------------------------------------
	--protect myself
	local blademailEnemies = AbilityExtensions:Count(enemys,
		function(t) return t:HasModifier("modifier_item_blade_mail") end)
	if ((npcBot:WasRecentlyDamagedByAnyHero(2) and #enemys >= 1) or #enemys >= 2)
	then
		if blademailEnemies ~= 0 and npcBot:GetHealth() <= 300 then
			-- pass
		else
			for _, npcEnemy in pairs(enemys) do
				if (CanCast[abilityNumber](npcEnemy)) then
					return BOT_ACTION_DESIRE_HIGH
				end
			end
		end
	end

	-- If my mana is enough,use it at enemy
	if (npcBot:GetActiveMode() == BOT_MODE_LANING)
	then
		if ((ManaPercentage > 0.4 or npcBot:GetMana() > ComboMana) and ability:GetLevel() >= 2)
		then
			if (WeakestEnemy ~= nil)
			then
				if (CanCast[abilityNumber](WeakestEnemy))
				then
					if (GetUnitToUnitDistance(npcBot, WeakestEnemy) < Radius - CastPoint * WeakestEnemy:GetCurrentMovementSpeed())
					then
						return BOT_ACTION_DESIRE_LOW
					end
				end
			end
		end
	end

	-- If we're farming and can hit 2+ creeps
	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
			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) <= Radius - CastPoint * npcEnemy:GetCurrentMovementSpeed())
			then
				return BOT_ACTION_DESIRE_MODERATE
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE

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 CastPoint = ability:GetCastPoint();
	local Radius = ability:GetAOERadius();

	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 isManaEnough = ManaPercentage > 0.6 or npcBot:GetMana() > ComboMana
	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	-- 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:GetExtrapolatedLocation(CastPoint);
		end
	end
	--------------------------------------
	-- Mode based usage
	--------------------------------------
	-- Protect myself
	local nearyByEnemys = npcBot:GetNearbyHeroes(600, true, BOT_MODE_NONE)
	if (
		(npcBot:GetActiveMode() == BOT_MODE_RETREAT and npcBot:GetActiveModeDesire() >= BOT_MODE_DESIRE_HIGH) or
			#nearyByEnemys > 0) then
		for _, npcEnemy in pairs(enemys) do
			if (CanCast[abilityNumber](npcEnemy) and not enemyDisabled(npcEnemy)) then
				if (npcBot:WasRecentlyDamagedByHero(npcEnemy, 2.0) or GetUnitToUnitDistance(npcBot, npcEnemy) < 600)
				then
					return BOT_ACTION_DESIRE_HIGH, npcEnemy:GetExtrapolatedLocation(CastPoint)
				end
			end
		end
	end

	-- Attack roshan
	if (npcBot:GetActiveMode() == BOT_MODE_ROSHAN) then
		local npcTarget = npcBot:GetAttackTarget()
		if (AbilityHelper.isRoshan(npcTarget) and AbilityHelper.roshanCanCast(npcTarget) and not enemyDisabled(npcTarget)) then
			if (isManaEnough and GetUnitToUnitDistance(npcBot, npcTarget) <= CastRange + 300) then
				return BOT_ACTION_DESIRE_LOW, npcTarget:GetExtrapolatedLocation(CastPoint)
			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 (isManaEnough and AbilitiesReal[abilityNumber]:GetLevel() >= 1) then
			local locationAoE = npcBot:FindAoELocation(true, false, npcBot:GetLocation(), CastRange, Radius, 0, 0)
			if (locationAoE.count >= 4) 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, 0, 0)
		if (locationAoE.count >= 2) then
			return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc
		end

		if (enemys == nil or #enemys <= 2) then
			local npcEnemy = npcBot:GetTarget()
			if (npcEnemy ~= nil and CanCast[abilityNumber](npcEnemy) and not enemyDisabled(npcEnemy)) then
				if (GetUnitToUnitDistance(npcBot, npcEnemy) < 1200) then
					return BOT_ACTION_DESIRE_MODERATE, npcEnemy:GetExtrapolatedLocation(CastPoint)
				end
			end
		end
	end

	-- If my mana is enough,use it at enemy
	if (npcBot:GetActiveMode() == BOT_MODE_LANING)
	then
		for _, npcEnemy in pairs(enemys) do
			if (ManaPercentage > 0.5 or npcBot:GetMana() > ComboMana)
			then
				if (role.CanBeSafeLaneCarry(npcEnemy:GetUnitName()))
				then
					if (CanCast[abilityNumber](npcEnemy))
					then
						return BOT_ACTION_DESIRE_HIGH, npcEnemy:GetExtrapolatedLocation(CastPoint);
					end
				end
			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() - 50
	local CastPoint = ability:GetCastPoint()

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(Radius, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local creeps = npcBot:GetNearbyCreeps(Radius + 300, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)
	--------------------------------------
	-- 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)
	then
		if (npcBot:WasRecentlyDamagedByAnyHero(2.0))
		then
			return BOT_ACTION_DESIRE_MODERATE;
		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 GetUnitToUnitDistance(npcBot, npcEnemy) <= 350 then
			return BOT_ACTION_DESIRE_MODERATE
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;
end

-- TODO: 7.31 ability rework
Consider[3] = function() return 0 end

local function EnemyCloseEnoughToUsePrimalSplit(t)
	return GetUnitToUnitDistance(npcBot, t) <= 600 or
		GetUnitToUnitDistance(npcBot, t) <= 1000 and npcBot:WasRecentlyDamagedByHero(t, 1.5)
end

Consider[5] = function()
	local abilityNumber = 5
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber]

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE
	end

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = AbilityExtensions:GetPureHeroes(npcBot, 850)
	local enemyCount = AbilityExtensions:GetEnemyHeroNumber(npcBot, enemys)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	--Try to kill enemy hero

	if AbilityExtensions:IsAttackingEnemies(npcBot) then
		if enemyCount >= 2 and AbilityExtensions:IsOrGoingToBeSeverelyDisabled(npcBot) then
			return BOT_ACTION_DESIRE_HIGH
		end
	end
	if npcBot:GetActiveMode() ~= BOT_MODE_RETREAT then
		if WeakestEnemy and EnemyCloseEnoughToUsePrimalSplit(WeakestEnemy)
		then
			if (
				HeroHealth <= WeakestEnemy:GetActualIncomingDamage(GetComboDamage(), DAMAGE_TYPE_MAGICAL) and
					npcBot:GetMana() > ComboMana)
			then
				return BOT_ACTION_DESIRE_LOW
			end
		end
	end

	-- If we're in a teamfight, use it on the scariest enemy
	local tableNearbyAttackingAlliedHeroes = AbilityExtensions:GetPureHeroes(npcBot, 1000):Filter(function(t) AbilityExtensions
			:IsAttackingEnemies(t)
	end)
	if #tableNearbyAttackingAlliedHeroes >= 2 and enemyCount > 1
	then
		return BOT_ACTION_DESIRE_MODERATE
	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
		return BOT_ACTION_DESIRE_LOW
	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 = AbilityExtensions:GetTargetIfGood(npcBot)

		if (npcEnemy ~= nil) and EnemyCloseEnoughToUsePrimalSplit(npcEnemy)
		then
			if #enemys >= 2 and #allys >= 2 then
				return BOT_ACTION_DESIRE_MODERATE
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE

end

local slamLosingTarget

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
		if npcBot:IsCastingAbility() then
			if npcBot:GetCurrentActiveAbility() == AbilitiesReal[1] then
				if not AbilityExtensions:IsFarmingOrPushing(npcBot) then
					local nearbyEnemies = AbilityExtensions:GetNearbyEnemyUnits(npcBot, AbilitiesReal[1]:GetAOERadius() + 90)
					if AbilityExtensions:Count(nearbyEnemies, CanCast[1]) == 0 then
						if slamLosingTarget == nil then
							slamLosingTarget = DotaTime()
							return
						elseif DotaTime() - slamLosingTarget > 0.15 then
							npcBot:Action_ClearActions(false)
						end
					end
				end
			end
		end
		slamLosingTarget = nil
		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
