local BattleConst = require "app/module/battle/battle_const"

local BattleBuffSpecial = {}

local BUFF_NAME = BattleConst.BUFF_NAME
local ATTR_NAME = BattleConst.ATTR_NAM

local function _addSkillOn(unitComp, buff, target, buffEffect)
	return target:addSkill(buff:getEffectNum())
end

local function _addSkillOff(buffSender, target, buff, buffEffect)
	if buffEffect and buffEffect.result > 0 then
		target:removeSkill(buff:getEffectNum(), buffEffect.result)
	end
end

local function _skillFireTimesOn(unitComp, buff, target, buffEffect)
	target.unitEntity:addSkillExtraUseTimes(buff:getEffectNum(), 1)
	return 1
end

local function _skillFireTimesOff(buffSender, target, buff, buffEffect)
	target.unitEntity:addSkillExtraUseTimes(buff:getEffectNum(), -1)
	return 1
end

local _handleOn = {
	[BUFF_NAME.ADD_SKILL] = _addSkillOn,						-- 添加技能
	[BUFF_NAME.SKILL_FIRE_TIMES] = _skillFireTimesOn,			-- 技能额外使用次数
}

local _handleOff = {
	[BUFF_NAME.ADD_SKILL] = _addSkillOff,						-- 添加技能
	[BUFF_NAME.SKILL_FIRE_TIMES] = _skillFireTimesOff,			-- 技能额外使用次数
}

-- 特殊buff添加时
function BattleBuffSpecial.specialBuffOn(unitComp, buff, target, buffEffect)
	local func = _handleOn[buff:getName()]
	if func then
		return func(unitComp, buff, target, buffEffect)
	end
	return 0
end

-- 特殊buff移除时
function BattleBuffSpecial.specialBuffOff(buffSender, target, buff, buffEffect)
	local func = _handleOff[buff:getName()]
	if func then
		func(buffSender, target, buff, buffEffect)
	end
end

return BattleBuffSpecial