----------------------------------------------------------------------------
--	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[2],
	Abilities[1],
	Abilities[2],
	Abilities[3],
	Abilities[2],
	Abilities[6],
	Abilities[2],
	Abilities[1],
	Abilities[1],
	"talent",
	Abilities[1],
	Abilities[6],
	Abilities[3],
	Abilities[3],
	"talent",
	Abilities[3],
	"nil",
	Abilities[6],
	"nil",
	"talent",
	"nil",
	"nil",
	"nil",
	"nil",
	"talent",
}
local TalentTree = {
	function()
		return Talents[1]
	end,
	function()
		return Talents[4]
	end,
	function()
		return Talents[6]
	end,
	function()
		return Talents[7]
	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, utility.UCanCast,
	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

-- ogre_magi_fireblast
Consider[1] = function()

	local ability = AbilitiesReal[1];

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

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


	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)

	-- Check for a channeling enemy
	for _, enemy in pairs(enemys) do
		if (enemy:IsChanneling() and CanCast[1](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[1](npcEnemy) and not enemyDisabled(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)
		then
			return BOT_ACTION_DESIRE_HIGH, npcMostDangerousEnemy;
		end
	end

	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[1](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

	-- 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[1](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 npcTarget = npcBot:GetTarget();

		if (npcTarget ~= nil)
		then
			if (
				CanCast[1](npcTarget) and not enemyDisabled(npcTarget) and
					GetUnitToUnitDistance(npcBot, npcTarget) < CastRange + 75 * #allys)
			then
				return BOT_ACTION_DESIRE_MODERATE, npcTarget
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0
end

-- ogre_magi_ignite
Consider[2] = function()

	local ability = AbilitiesReal[2];

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

	local CastRange = ability:GetCastRange();
	local Damage = (18 + 8 * ability:GetLevel()) * (4 + ability:GetLevel());


	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)

	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[2](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
	--------------------------------------

	--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[2](WeakestEnemy))
			then
				return BOT_ACTION_DESIRE_LOW, WeakestEnemy;
			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 and can hit 3+ 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
		if (#enemys >= 1)
		then
			if (ManaPercentage > 0.5 or npcBot:GetMana() > ComboMana and AbilitiesReal[4]:GetLevel() >= 1)
			then
				if (WeakestEnemy ~= nil)
				then
					if (CanCast[2](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[4]:GetLevel() >= 1)
			then
				if (CanCast[2](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 npcTarget = npcBot:GetTarget();

		if (ManaPercentage > 0.4 or npcBot:GetMana() > ComboMana)
		then
			if (npcTarget ~= nil)
			then
				if (CanCast[2](npcTarget) and GetUnitToUnitDistance(npcBot, npcTarget) < CastRange + 75 * #allys)
				then
					return BOT_ACTION_DESIRE_MODERATE, npcTarget;
				end
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;
end

-- ogre_magi_bloodlust
Consider[3] = function()
	local ability = AbilitiesReal[3]

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE
	end

	local CastRange = ability:GetCastRange();
	local Damage = 0

	local allys = AbilityExtensions:GetNearbyHeroes(npcBot, 1200, false)
	allys = allys:SortByMaxFirst(function(t)
		return AbilityExtensions:GetBattlePower(t)
	end)
	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 pushing or defending a lane
	if (npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_BOT or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_BOT)
	then
		if (ManaPercentage > 0.6 and npcBot:GetMana() > ComboMana)
		then
			local tableNearbyFriendlyTowers = npcBot:GetNearbyTowers(CastRange + 300, false);
			for _, myTower in pairs(tableNearbyFriendlyTowers) do
				if (
					GetUnitToUnitDistance(myTower, npcBot) < CastRange and not myTower:HasModifier("modifier_ogre_magi_bloodlust"))
				then
					return BOT_ACTION_DESIRE_MODERATE, myTower;
				end
			end

			for _, myFriend in pairs(allys) do
				if (
					GetUnitToUnitDistance(myFriend, npcBot) < CastRange and not myFriend:HasModifier("modifier_ogre_magi_bloodlust"))
				then
					return BOT_ACTION_DESIRE_MODERATE, myFriend;
				end
			end
			if not npcBot:HasModifier("modifier_ogre_magi_bloodlust") then
				return BOT_ACTION_DESIRE_MODERATE, npcBot;
			end
		end
	end

	-- If my mana is enough,buff myfriend.
	if (ManaPercentage > 0.6 and npcBot:GetMana() > ComboMana)
	then
		for _, ally in pairs(allys) do
			if (not ally:HasModifier("modifier_ogre_magi_bloodlust"))
			then
				return BOT_ACTION_DESIRE_MODERATE, ally;
			end
		end

		if not npcBot:HasModifier("modifier_ogre_magi_bloodlust") then
			return BOT_ACTION_DESIRE_MODERATE, npcBot;
		end

	end

	return BOT_ACTION_DESIRE_NONE, 0
end

-- ogre_magi_unrefined_fireblast
Consider[4] = function()

	local ability = AbilitiesReal[4];

	if not ability:IsFullyCastable() or AbilitiesReal[1]:IsFullyCastable() or
		ability:GetManaCost() / npcBot:GetMaxMana() > 0.3 then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

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


	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)

	-- Check for a channeling enemy
	for _, enemy in pairs(enemys) do
		if (enemy:IsChanneling() and CanCast[1](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[5](npcEnemy) and not enemyDisabled(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)
		then
			return BOT_ACTION_DESIRE_HIGH, npcMostDangerousEnemy;
		end
	end

	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[5](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
	--------------------------------------

	-- 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[5](npcTarget) and not enemyDisabled(npcTarget) and
					GetUnitToUnitDistance(npcBot, npcTarget) < CastRange + 75 * #allys)
			then
				return BOT_ACTION_DESIRE_MODERATE, npcTarget
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0
end

-- ogre_magi_smash
Consider[5] = function()
	local ability = AbilitiesReal[5]
	if ability:IsHidden() or not ability:IsFullyCastable() then
		return 0
	end

	local castRange = ability:GetCastRange()

	local allys = AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot, castRange + 200, false)
	local enemies = AbilityExtensions:GetNearbyNonIllusionHeroes(npcBot)
	local enemyCount = AbilityExtensions:GetEnemyHeroNumber(npcBot, enemies)

	if AbilityExtensions:IsAttackingEnemies(npcBot) then
		if enemyCount > 0 then
			local a, b = allys:Partition(function(t) return AbilityExtensions:IsSeverelyDisabledOrSlowed(t) end)
			local rate = #a * 2 + #b
			if a >= 2 then
				return RemapValClamped(rate, 2.4, 4, BOT_ACTION_DESIRE_MODERATE, BOT_ACTION_DESIRE_VERYHIGH), a:First() or b:First()
			end
		end
	end
	if AbilityExtensions:IsRetreating(npcBot) then
		if enemyCount > 0 then
			return BOT_ACTION_DESIRE_MODERATE, npcBot
		end
	end
	return 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
