package fight

import (
	"blazing/logic/service/common"
	"blazing/logic/service/fight/action"
	"blazing/logic/service/fight/info"
	"blazing/logic/service/fight/input"
	"blazing/modules/player/model"
)

// Compare 比较两个战斗动作的执行优先级
func (f *FightC) Compare(a, b action.BattleActionI) (action.BattleActionI, action.BattleActionI) {
	if a == nil {
		return b, a
	}
	if b == nil {
		return a, b
	}
	// 动作本身的优先级比较
	p1 := b.Priority() - a.Priority()
	if p1 > 0 { // 对手优先级更高
		return b, a
	} else if p1 < 0 {
		return a, b
	}

	if speedA, speedB := f.actionSpeed(a), f.actionSpeed(b); speedA.Cmp(speedB) != 0 {
		if speedA.Cmp(speedB) > 0 {
			return a, b
		}
		return b, a
	}
	if a.GetActorIndex() != b.GetActorIndex() {
		if a.GetActorIndex() < b.GetActorIndex() {
			return a, b
		}
		return b, a
	}

	return a, b // 速度相同时，发起方优先
}

func (f *FightC) openActionWindow() {
	f.actionMu.Lock()
	f.acceptActions = true
	f.pendingActions = f.pendingActions[:0]
	f.actionRound.Store(uint32(f.Round))
	f.actionMu.Unlock()
}

func (f *FightC) closeActionWindow() {
	f.actionMu.Lock()
	f.acceptActions = false
	f.pendingActions = f.pendingActions[:0]
	f.actionRound.Store(0)
	f.actionMu.Unlock()

}

func (f *FightC) submitAction(act action.BattleActionI) {
	if act == nil || f.closefight {
		return
	}

	round := f.actionRound.Load()
	if round == 0 {
		return
	}
	act.SetRound(round)

	f.actionMu.Lock()
	if !f.acceptActions || act.GetRound() != f.actionRound.Load() {
		f.actionMu.Unlock()
		return
	}
	replaceIndex := -1
	for i, pending := range f.pendingActions {
		if pending == nil || actionSlotKeyFromAction(pending) != actionSlotKeyFromAction(act) {
			continue
		}
		replaceIndex = i
		break
	}
	if replaceIndex >= 0 {
		f.pendingActions[replaceIndex] = act
	} else {
		f.pendingActions = append(f.pendingActions, act)
	}
	notify := f.actionNotify
	f.actionMu.Unlock()

	if notify == nil {
		return
	}

	select {
	case notify <- struct{}{}:
	default:
	}
}

func (f *FightC) nextAction() action.BattleActionI {
	f.actionMu.Lock()
	if len(f.pendingActions) == 0 {
		f.actionMu.Unlock()
		return nil
	}

	act := f.pendingActions[0]
	copy(f.pendingActions, f.pendingActions[1:])
	f.pendingActions = f.pendingActions[:len(f.pendingActions)-1]
	hasMore := len(f.pendingActions) > 0
	notify := f.actionNotify
	f.actionMu.Unlock()

	if hasMore && notify != nil {
		select {
		case notify <- struct{}{}:
		default:
		}
	}

	return act
}

// 玩家逃跑/无响应/掉线
func (f *FightC) Over(c common.PlayerI, res model.EnumBattleOverReason) {
	if f.closefight {

		return
	}
	if f.Info.Status != info.BattleMode.FIGHT_WITH_NPC && res == model.BattleOverReason.PlayerEscape {
		return
	}
	// case *action.EscapeAction:
	// 	f.FightOverInfo.WinnerId = b2.GetPlayerID() //对方胜利
	// 	f.FightOverInfo.Reason = a.Reason

	// 	f.closefight = true
	// ret := &action.EscapeAction{
	// 	BaseAction: action.NewBaseAction(c.GetInfo().UserID),
	// 	Reason:     res,
	// }

	f.overl.Do(func() {
		f.Reason = res
		if f.GetInputByPlayer(c, true) != nil {
			f.WinnerId = f.GetInputByPlayer(c, true).UserID
		}
		f.FightOverInfo.Reason = f.Reason
		f.FightOverInfo.WinnerId = f.WinnerId
		f.closefight = true

		close(f.quit)

	})

}

// 切换精灵  主动和被驱逐
func (f *FightC) ChangePet(c common.PlayerI, id uint32) {
	f.ChangePetAt(c, id, 0)
}

func (f *FightC) ChangePetAt(c common.PlayerI, id uint32, actorIndex int) {

	if f.closefight {

		return
	}

	self := f.getInputByUserID(c.GetInfo().UserID, actorIndex, false)
	if self == nil {
		return
	}
	ii, _ := self.GetPet(id)
	if ii == nil {
		//无法切换不允许切换的精灵
		return
	}
	//todo 待实现无法切精灵的情况
	ret := &action.ActiveSwitchAction{
		BaseAction: action.NewBaseAction(c.GetInfo().UserID),
		Cid:        id,
	}
	ret.ActorIndex = actorIndex
	f.submitAction(ret)

}

// 玩家使用技能
func (f *FightC) UseSkill(c common.PlayerI, id uint32) {
	f.UseSkillAt(c, id, 0, 0)
}

func (f *FightC) UseSkillAt(c common.PlayerI, id uint32, actorIndex, targetIndex int) {
	if f.closefight {

		return
	}
	ret := &action.SelectSkillAction{
		BaseAction: action.NewBaseAction(c.GetInfo().UserID),
	}
	ret.ActorIndex = actorIndex

	self := f.getInputByUserID(c.GetInfo().UserID, actorIndex, false)
	if self == nil {
		return
	}
	currentPet := self.PrimaryCurPet()
	if currentPet == nil {
		return
	}
	if currentPet.Info.Hp <= 0 {
		return
	}
	// t, ok := f.GetInputByPlayer(c, false).CurPet[0].Skills[id]
	// if ok {
	// 	ret.SkillEntity = t

	// }
	for _, v := range currentPet.Skills {
		if v.XML.ID == int(id) {
			ret.SkillEntity = v

			break
		}

	}
	ret.TargetIndex = normalizeSkillTargetIndex(actorIndex, targetIndex, ret.SkillEntity)
	f.submitAction(ret)
}

func normalizeSkillTargetIndex(actorIndex, targetIndex int, skill *info.SkillEntity) int {
	if skill == nil {
		return targetIndex
	}
	// 约定：非负目标位表示敌方；负值 -(index+1) 表示同侧（自己/队友）
	if _, targetIsOpposite := DecodeTargetIndex(targetIndex); !targetIsOpposite {
		return targetIndex
	}
	// GBTL.AtkType: 0=所有人 1=仅己方 2=仅对方 3=仅自己（默认2）
	switch skill.XML.AtkType {
	case 1, 3:
		// 旧协议未传目标时，己方类技能默认作用自己；新协议可通过负编码显式指定队友。
		return EncodeTargetIndex(actorIndex, false)
	default:
		return targetIndex
	}
}

// 玩家使用技能
func (f *FightC) Capture(c common.PlayerI, id uint32) {
	if f.closefight {

		return
	}
	f.submitAction(&action.UseItemAction{BaseAction: action.NewBaseAction(c.GetInfo().UserID), ItemID: id})

}

func (f *FightC) c(c common.PlayerI, cacthid, itemid uint32) {
	f.UseItemAt(c, cacthid, itemid, 0, 0)
}

func (f *FightC) UseItem(c common.PlayerI, cacthid, itemid uint32) {
	f.UseItemAt(c, cacthid, itemid, 0, 0)
}

func (f *FightC) UseItemAt(c common.PlayerI, cacthid, itemid uint32, actorIndex, targetIndex int) {
	if f.closefight {

		return
	}
	if f.Info.Mode == info.BattleMode.PET_MELEE {
		go f.UseSkill(c, 0)
		return
	}
	actionInfo := &action.UseItemAction{BaseAction: action.NewBaseAction(c.GetInfo().UserID), ItemID: itemid, CacthTime: cacthid}
	actionInfo.ActorIndex = actorIndex
	actionInfo.TargetIndex = targetIndex
	f.submitAction(actionInfo)
}

// ReadyFight 处理玩家战斗准备逻辑，当满足条件时启动战斗循环
func (f *FightC) ReadyFight(c common.PlayerI) {
	if f.LegacyGroupProtocol {
		input := f.GetInputByPlayer(c, false)
		if input == nil {
			return
		}
		input.Finished = true
		if f.checkBothPlayersReady(c) {
			f.startLegacyGroupBattle()
		}
		return
	}
	f.Broadcast(func(ff *input.Input) {

		ff.Player.SendPackCmd(2404, &info.S2C_2404{UserID: c.GetInfo().UserID})
	})
	// 2. 标记当前玩家已准备完成
	input := f.GetInputByPlayer(c, false)
	input.Finished = true
	if f.checkBothPlayersReady(c) {
		f.startBattle(f.FightStartOutboundInfo)
	}
}

// buildFightStartInfo 构建战斗开始时需要发送给双方的信息
func (f *FightC) buildFightStartInfo() info.FightStartOutboundInfo {
	startInfo := info.FightStartOutboundInfo{}
	ourInfos := f.collectFightPetInfos(f.Our)
	oppInfos := f.collectFightPetInfos(f.Opp)
	startInfo.Info1 = append(startInfo.Info1, ourInfos...)
	startInfo.Info2 = append(startInfo.Info2, oppInfos...)
	startInfo.Info1Len = uint32(len(startInfo.Info1))
	startInfo.Info2Len = uint32(len(startInfo.Info2))
	return startInfo
}

func (f *FightC) collectFightPetInfos(inputs []*input.Input) []info.FightPetInfo {
	infos := make([]info.FightPetInfo, 0, len(inputs))
	for actorIndex, fighter := range inputs {
		if fighter == nil || fighter.Player == nil {
			continue
		}
		currentPet := fighter.PrimaryCurPet()
		if currentPet == nil {
			continue
		}
		fightInfo := info.FightPetInfo{
			UserID:           fighter.Player.GetInfo().UserID,
			ActorIndex:       uint32(actorIndex),
			ControllerUserID: currentPet.ControllerUserID,
			ID:               currentPet.Info.ID,
			Name:             currentPet.Info.Name,
			CatchTime:        currentPet.Info.CatchTime,
			Hp:               currentPet.Info.Hp,
			MaxHp:            currentPet.Info.MaxHp,
			Level:            currentPet.Info.Level,
			Catchable:        uint32(fighter.CanCapture),
		}
		if fighter.AttackValue != nil {
			fightInfo.Prop = fighter.AttackValue.Prop
		}
		infos = append(infos, fightInfo)
	}
	return infos
}

// checkBothPlayersReady 检查PVP战斗中双方是否都已准备完成
// 参数c为当前准备的玩家，返回true表示双方均准备完成
func (f *FightC) checkBothPlayersReady(currentPlayer common.PlayerI) bool {
	// 这里的第二个参数true含义需结合业务确认（推测为"检查对手"），建议用常量替代
	opponentInput := f.GetInputByPlayer(currentPlayer, true)
	return opponentInput.Finished
}

// startBattle 启动战斗核心逻辑：提交战斗循环任务并通知双方
func (f *FightC) startBattle(startInfo info.FightStartOutboundInfo) {

	f.startl.Do(func() {

		// 提交战斗循环到战斗池（处理战斗池容量问题）
		// if err := Fightpool.Invoke(f); err != nil {
		// 	log.Panic(context.Background(), "战斗循环提交失败", "error", err)
		// }
		go f.battleLoop()

		// 向双方广播战斗开始信息
		if f.LegacyGroupProtocol {
			f.Broadcast(func(ff *input.Input) {
				f.sendLegacyGroupStart(ff.Player)
			})
		} else {
			f.Broadcast(func(ff *input.Input) {
				ff.Player.SendPackCmd(2504, &startInfo)
			})
		}
	})
}

func (f *FightC) startLegacyGroupBattle() {
	f.startl.Do(func() {
		go f.battleLoop()
		f.Broadcast(func(ff *input.Input) {
			f.sendLegacyGroupStart(ff.Player)
		})
	})
}