local EventSystem = require('Event/EventSystem')
local Base = require("Battle/Logic/Level/LevelFunction/LevelFunction")
local BossChallengeLevelFunction = class("BossChallengeLevelFunction",Base)

local private = 
{

}

function BossChallengeLevelFunction:InitLevel()
    Base.InitLevel(self)

    self.allArmyPosBuffs = nil
    self.isBuffAdded = false
    self.bossHpPercentRecords = {}  --记录所有的boss的hp百分比
end

function BossChallengeLevelFunction:CreatePlayers(pos,dir)
    Base.CreatePlayers(self,pos,dir)

    if LevelPlayerManager.buffIdList then
        local entityTable = LevelPlayerManager.GetPlayerEntitysByPlayerIDInRoom(LuaConst.STANDALONE_PLAYER_PlayID)
        
        --预先计算出buff
        self:CalculateBuff(LevelPlayerManager.buffIdList,entityTable)
    end
end

function BossChallengeLevelFunction:CalculateBuff(levelBuffIdList,entityTable)
    --计算出全军生效的buff
    self.allArmyPosBuffs = self:CalculateAllArmyPosBuff(levelBuffIdList,entityTable)

    --计算出同路军生效的buff
    self.armyPos2BuffDic = {}
    for i,entity in ipairs(entityTable) do
        self.armyPos2BuffDic[i] = self:CalculateBuffOfArmyPos(levelBuffIdList,entityTable[i])
    end
end

function BossChallengeLevelFunction:CalculateBuffOfArmyPos(levelBuffIdList,entity)
    local buffs = {}
    local buffData = nil
    for i,buffId in ipairs(levelBuffIdList) do
        buffData = DataSheetManager.BuffData:GetDataByBuffID(buffId)
        if buffData then
            if buffData.ArmyFilter == LuaConst.EArmyFilter.SAME_ARMY_POS then
                if BuffManager.IsMeetHeroTypeFilterOfBuff(buffData,entity:GetCharacterID()) then
                    table.insert(buffs,buffId) --策划需求是如果主副将都触发了buff，则该buff会被叠加两次，所以下面还会insert
                end

                if BuffManager.IsMeetHeroTypeFilterOfBuff(buffData,entity.components.adjutant:GetAdjutantCharacterID()) then
                    table.insert(buffs,buffId) --策划需求是如果主副将都触发了buff，则该buff会被叠加两次，所以上面也insert了
                end

            elseif buffData.ArmyFilter == LuaConst.EArmyFilter.SELF then
                if BuffManager.IsMeetHeroTypeFilterOfBuff(buffData,entity:GetCharacterID()) then
                    table.insert(buffs,buffId)
                end
            end
        end 
    end
    return buffs
end

function BossChallengeLevelFunction:CalculateAllArmyPosBuff(levelBuffIdList,entityTable)
    local allArmyPosBuff = {}
    
    local buffData = nil
    for i,buffId in ipairs(levelBuffIdList) do
        buffData = DataSheetManager.BuffData:GetDataByBuffID(buffId)
        if buffData and buffData.ArmyFilter == LuaConst.EArmyFilter.WHOLE_ARMIES then
            for j,entity in ipairs(entityTable) do
                --策划需求是所有主副将触发的buff都可以叠加，所以这里必须遍历完所有entity以及其副将，不能break
                if BuffManager.IsMeetHeroTypeFilterOfBuff(buffData,entity:GetCharacterID()) then
                    table.insert(allArmyPosBuff,buffId)  
                end
                if BuffManager.IsMeetHeroTypeFilterOfBuff(buffData,entity.components.adjutant:GetAdjutantCharacterID()) then
                    table.insert(allArmyPosBuff,buffId)
                end
            end
        end
    end
    return allArmyPosBuff
end


function BossChallengeLevelFunction:AddLevelBuff(entity,armyPos)
    if self.allArmyPosBuffs then
        for i,buffId in ipairs(self.allArmyPosBuffs) do
            SystemManager.AddBuff(entity,buffId, entity, nil, nil)
        end
    end
    if self.armyPos2BuffDic then
        if self.armyPos2BuffDic[armyPos] then
            for i,buffId in ipairs(self.armyPos2BuffDic[armyPos]) do
                SystemManager.AddBuff(entity,buffId, entity, nil, nil)
            end
        end
    end
end

function BossChallengeLevelFunction:OnUpdate()
    --延迟3帧添加关卡buff，用这个简便方法解决buff图标不显示的问题
    if LogicUpdateManager._clientHandleFrame > 3 and not self.isBuffAdded then
        self.isBuffAdded = true
        local entityTable = LevelPlayerManager.GetPlayerEntitysByPlayerIDInRoom(LuaConst.STANDALONE_PLAYER_PlayID)
        --添加Buff
        for i,entity in ipairs(entityTable) do
            self:AddLevelBuff(entity,i)
        end
    end
end
--获取boss剩余血量百分比
function BossChallengeLevelFunction:GetBossHpLeftPercent()
    if #self.bossHpPercentRecords > 0 then
        local hpPercent = FP.newV1(0)
        for i, record in ipairs(self.bossHpPercentRecords) do
            hpPercent:Add(record.hpPercent)
        end
        hpPercent:Div(#self.bossHpPercentRecords)
        return FP.tonumberV1(hpPercent)
    else
        return 1
    end
end

function BossChallengeLevelFunction:GetBossHpRecord(bossEntityID)
    local bossHpRecord = nil
    for i,record in ipairs(self.bossHpPercentRecords) do
        if record.entityID == bossEntityID then
            bossHpRecord = record
            break
        end
    end
    if not bossHpRecord then
        bossHpRecord = {entityID = bossEntityID, hpPercent = FP.newV1(0)}
        table.insert(self.bossHpPercentRecords, bossHpRecord)
    end
    return bossHpRecord
end

function BossChallengeLevelFunction:OnHpChange(entity, caster)
    Base.OnHpChange(self, entity, caster)
    if entity:IsBoss() then
        local bossHpRecord = self:GetBossHpRecord(entity.EntityID)
        bossHpRecord.hpPercent:Reset(entity.components.attr:HitPointPercents())
    end
end

return BossChallengeLevelFunction