--
--- 定时释放本某个技能（技能的SkillIndex）（且添加倒计时显示）
---
local Base = require("Battle/Logic/Entity/SkillDecorator/SkillDecorator")
local SkillDecoratorTimingUseSomeSkill = class("SkillDecoratorTimingUseSomeSkill", Base)

local EventSystem = require 'Event/EventSystem'
local FP_Greater = FP.Greater
local FP_LessEquals = FP.LessEquals

-- 注意：这个 skillID 必须是belongTo技能id ；
-- 使用skillIndex的原因：技能替换后SkillID会变化，但是skillIndex不会变化的，通过skillIndex始终能找到正确的替换后的技能。
function SkillDecoratorTimingUseSomeSkill:initialize(entity, skillID, maxTimer, skillIndex, isSkillCanSwitchAll)
    Base.initialize(self, entity, skillID)
    self.type = LuaConst.SkillDecoratorType.TimingUseSomeSkill
    self.UIType = LuaConst.UISkillBtnResetType.TimingUseSomeSkill
    
    self.isSkillCanSwitchAll = isSkillCanSwitchAll -- 必须是无技能释放时，才可自动释放
    self.skillIndex = skillIndex  -- 需要释放的技能index
    self.maxTimer = FP.newV1(0):Reset(maxTimer) -- 倒计时总时长 单位：毫秒
    self.leftTime = FP.newV1(0):Reset(maxTimer)  -- 剩余时长 单位：毫秒
end

function SkillDecoratorTimingUseSomeSkill:OnLogicUpdate()
    if not self.enable then
        return
    end
    if FP_Greater(self.leftTime,0) then
        self.leftTime:Sub(LuaConst.TimeSpanMs)
    end
    if FP_LessEquals(self.leftTime,0) then
        local skillBaseComponent = self.entity.components.skillBase
        if self.isSkillCanSwitchAll then -- 等待其他技能释放完毕后
            if not skillBaseComponent.CanSwitchAll then
                return
            end
        end
        
        if not self.entity.components.buff.CurrentBuffStates:Get(LuaConst.SpecialBuffs.CanSkill) then -- 可释放技能时
            return
        end
        -- 可使用技能了
        local skillData = skillBaseComponent:GetSkillDataBySkillIndex(self.skillIndex)
        if not skillData then
            logging.error(LTAG.ERROR, " [战斗策划] ：技能额外功能填写错误，技能表找不到技能数据。skillIndex = ", self.skillIndex , ", 此额外功能的技能ID =", self.skillID)
            return
        end
        SystemManager.SetNextState(LuaConst.StateType.Attack, self.entity, skillData.ID, "", {})
        -- 关闭此Decorator
        self.enable = false
        -- 告知UI
        EventSystem.Dispatch(EventID.UI_BattleAttack_ResetBtn, self.entity, self.skillID, self.UIType, nil)
    end
end

-- ui上面渲染的方法
function SkillDecoratorTimingUseSomeSkill:OnUIBtn()
    EventSystem.Dispatch(EventID.UI_BattleAttack_ResetBtn, self.entity, self.skillID, self.UIType, self.leftTime, self.maxTimer)
end

function SkillDecoratorTimingUseSomeSkill:SetEnable(value)
    self.leftTime:Reset(self.maxTimer)
    self.enable = value
end

function SkillDecoratorTimingUseSomeSkill.StringParamToFormat(str)
    local strArr = string.split(str,",")
    local maxTimer, skillIndex = strArr[1], strArr[2]
    maxTimer = tonumber(maxTimer)
    skillIndex = tonumber(skillIndex)
    local isSkillCanSwitchAll = strArr[3] == "1"
    return maxTimer, skillIndex, isSkillCanSwitchAll
end
return SkillDecoratorTimingUseSomeSkill