package fight

import (
	"blazing/common/utils"

	"blazing/logic/service/fight/action"
	"blazing/logic/service/fight/info"
	"blazing/logic/service/fight/input"
	"blazing/modules/player/model"
	"reflect"

	"github.com/alpacahq/alpacadecimal"
	"github.com/barkimedes/go-deepcopy"
	"github.com/gogf/gf/v2/util/grand"
)

// processSkillAttack 处理技能攻击逻辑
func (f *FightC) processSkillAttack(attacker, defender *input.Input, skill *info.SkillEntity) {
	if attacker == nil || defender == nil || skill == nil {
		return
	}
	skill.AttackTimeC(attacker.Prop[5]) //计算命中

	defender.ExecWithOpponent(attacker, func(effect input.Effect) bool { //计算闪避,然后修改对方命中),同时相当于计算属性无效这种
		f.setEffectSkillContext(effect, skill, defender)
		effect.SkillHit_ex()
		return true
	})

	attacker.ExecWithOpponent(defender, func(effect input.Effect) bool {
		//计算变威力
		f.setEffectSkillContext(effect, skill, defender)
		effect.SkillHit() //相当于先调整基础命中,不光调整命中，这里还能调整技能属性，暴击率
		return true
	})
	var originalProps [2][6]int8
	var originalPetInfo [2]model.PetInfo
	attackerPet := attacker.CurrentPet()
	defenderPet := defender.CurrentPet()
	if attackerPet == nil || defenderPet == nil {
		return
	}
	//复制属性
	originalProps[0], originalProps[1] = attacker.Prop, defender.Prop
	originalPetInfo[0], originalPetInfo[1] = attackerPet.Info, defenderPet.Info
	attacker.ExecWithOpponent(defender, func(effect input.Effect) bool {
		//计算变威力
		f.setEffectSkillContext(effect, skill, defender)
		effect.CalculatePre() //相当于先调整基础命中,不光调整命中，这里还能调整技能属性，暴击率
		return true
	})
	//技能命中+效果失效  这里就是修改效果命中为false
	//技能miss+效果生效 这里属于强制改命中效果,但是正常来说,技能miss掉后效果也应该失效
	//技能失效+效果失效
	attacker.AttackTime = skill.AttackTime
	attacker.SkillID = uint32(skill.XML.ID) //获取技能ID
	var SumDamage alpacadecimal.Decimal
	if skill.AttackTime != 0 { //如果命中

		SumDamage = attacker.CalculatePower(defender, skill)
		attacker.CalculateCrit(defender, skill) //暴击计算
		attacker.IsCritical = skill.Crit
	}

	//还原属性
	attacker.Prop, defender.Prop = originalProps[0], originalProps[1]
	attackerPet.Info, defenderPet.Info = originalPetInfo[0], originalPetInfo[1]

	if attacker.IsCritical == 1 { //命中了才有暴击
		//暴击破防
		if skill.Category() == info.Category.PHYSICAL && defender.Prop[1] > 0 {
			defender.Prop[1] = 0
		} else if skill.Category() == info.Category.SPECIAL && defender.Prop[3] > 0 {
			defender.Prop[3] = 0
		}
		//暴击翻倍
		SumDamage = SumDamage.Mul(alpacadecimal.NewFromInt(2))
	}

	//到这里已经是强制miss或者命中,所以根本不存在强制miss改命中的情况,因为miss的时候不会执行到这里
	if !skill.Hit {

		for _, effect := range attacker.EffectCache {
			effect.Alive(false) //我方效果命中
		}
		//这时候将被覆盖的效果全部装回来enterturn
		for _, effect := range attacker.EffectLost {
			if effect.Duration() > 0 || effect.Duration() == -1 {
				//effect.Alive(true)
				attacker.AddEffect(effect.GetInput(), effect)
			}
		}
	}

	// 扣减防御方血量
	attacker.ExecWithOpponent(defender, func(effect input.Effect) bool {
		f.setEffectSkillContext(effect, skill, defender)
		effect.OnSkill() //调用伤害计算
		return true
	})

	defender.Damage(attacker, &info.DamageZone{
		Damage: SumDamage,
		Type:   info.DamageType.Red,
	})
}

// IsNil 检查值是否为nil
func IsNil(x interface{}) bool {
	if x == nil {
		return true
	}
	rv := reflect.ValueOf(x)
	return rv.Kind() == reflect.Ptr && rv.IsNil()
}

// copySkill 复制技能实体
func (f *FightC) copySkill(action *action.SelectSkillAction) *info.SkillEntity {
	if action == nil {
		return nil
	}
	if action.SkillEntity == nil {
		return nil
	}

	originalSkill, _ := deepcopy.Anything(action.SkillEntity)                //备份技能
	originalSkill.(*info.SkillEntity).Accuracy = action.SkillEntity.Accuracy //拷贝后命中丢失
	return originalSkill.(*info.SkillEntity)
}

func (f *FightC) getSkillParticipants(skillAction *action.SelectSkillAction) (*input.Input, *input.Input) {
	if skillAction == nil {
		return nil, nil
	}
	return f.GetInputByAction(skillAction, false), f.GetInputByAction(skillAction, true)
}

// setEffectSkillContext 统一设置技能阶段 effect 上下文。
// 规则：
// 1) Our/Opp 由 ExecWithOpponent 负责写入（carrier / 对位）。
// 2) Target 统一表示“本次动作被选中的目标位”，在攻防双方 hook 中保持一致。
func (f *FightC) setEffectSkillContext(effect input.Effect, skill *info.SkillEntity, target *input.Input) {
	if effect == nil {
		return
	}
	ctx := effect.Ctx()
	ctx.SkillEntity = skill
	if target != nil {
		ctx.Target = target
	}
}

func (f *FightC) setEffectTarget(effect input.Effect, target *input.Input) {
	if effect == nil || target == nil {
		return
	}
	effect.Ctx().Target = target
}

// plannedOpponentForCarrier 为旧 effect 提供“当前动作对应目标”上下文：
// 1) 若 carrier 是本回合出手方，返回其动作目标。
// 2) 若无匹配动作，返回 nil，交给 Input 默认 OppTeam 回退。
func (f *FightC) plannedOpponentForCarrier(carrier *input.Input, acts ...*action.SelectSkillAction) *input.Input {
	if carrier == nil {
		return nil
	}
	for _, act := range acts {
		if act == nil {
			continue
		}
		attacker, defender := f.getSkillParticipants(act)
		if attacker == carrier {
			return defender
		}
	}
	return nil
}

func (f *FightC) collectAttackValues(inputs []*input.Input) []model.AttackValue {
	values := make([]model.AttackValue, 0, len(inputs))
	for actorIndex, fighter := range inputs {
		if fighter == nil || fighter.AttackValue == nil {
			continue
		}
		attackValue := *fighter.AttackValue
		attackValue.ActorIndex = uint32(actorIndex)
		values = append(values, attackValue)
	}
	return values
}

func (f *FightC) buildNoteUseSkillOutboundInfo() info.NoteUseSkillOutboundInfo {
	result := info.NoteUseSkillOutboundInfo{}
	result.FirstAttackInfo = append(result.FirstAttackInfo, f.collectAttackValues(f.Our)...)
	result.SecondAttackInfo = append(result.SecondAttackInfo, f.collectAttackValues(f.Opp)...)

	return result
}

// enterturn 处理战斗回合逻辑
// 回合有先手方和后手方,同时有攻击方和被攻击方
func (f *FightC) enterturn(firstAttack, secondAttack *action.SelectSkillAction) {
	//双方首发精灵登场时，依挑战方机制：房主方先判定，挑战方后判定
	//双方非首发精灵登场时，根据切换先后判定(看手速)
	//  神罗、圣华登场时魂免，“登场时xx”等效果
	//阿枫的效果也在这里判断

	if f.closefight {
		return
	}

	f.Broadcast(func(ff *input.Input) {

		ff.EffectCache = make([]input.Effect, 0) //先把上一回合数据清空,但是应该把本身延续类效果集成过来
		ff.EffectLost = make([]input.Effect, 0)
		opponent := f.plannedOpponentForCarrier(ff, firstAttack, secondAttack)
		ff.ExecWithOpponent(opponent, func(effect input.Effect) bool { //回合开始前
			f.setEffectTarget(effect, opponent)
			effect.TurnStart(firstAttack, secondAttack)
			return true
		})
	})

	for _, skillAction := range []*action.SelectSkillAction{firstAttack, secondAttack} {
		attackerInput, _ := f.getSkillParticipants(skillAction)
		if attackerInput == nil {
			continue
		}
		f.setActionAttackValue(skillAction)
		attackerInput.Parseskill(skillAction)
	}
	f.Broadcast(func(fighter *input.Input) {
		opponent := f.plannedOpponentForCarrier(fighter, firstAttack, secondAttack)
		fighter.ExecWithOpponent(opponent, func(effect input.Effect) bool { //回合开始前
			f.setEffectTarget(effect, opponent)
			effect.ComparePre(firstAttack, secondAttack) //先结算技能的优先级
			return true
		})
		fighter.ResetAttackValue()
	})
	f.First, f.Second = f.primaryOur(), f.primaryOpp()
	switch {
	case firstAttack != nil && secondAttack != nil:
		f.First, _ = f.getSkillParticipants(firstAttack)
		f.Second, _ = f.getSkillParticipants(secondAttack)
	case firstAttack != nil:
		f.First, f.Second = f.getSkillParticipants(firstAttack)
	case secondAttack != nil:
		f.First, f.Second = f.getSkillParticipants(secondAttack)
	}
	if f.First == nil {
		f.First = f.primaryOur()
	}
	if f.Second == nil {
		f.Second = f.primaryOpp()
	}

	if firstAttack != nil && secondAttack != nil {
		switch {
		case firstAttack.SkillEntity.XML.Priority < secondAttack.SkillEntity.XML.Priority:
			firstAttack, secondAttack = secondAttack, firstAttack //互换先手权
			f.First, f.Second = f.Second, f.First
		case firstAttack.SkillEntity.XML.Priority == secondAttack.SkillEntity.XML.Priority:
			if f.Second.GetProp(4).Cmp(f.First.GetProp(4)) > 0 {
				firstAttack, secondAttack = secondAttack, firstAttack //互换先手权
				f.First, f.Second = f.Second, f.First
			}
			if f.Second.GetProp(4).Cmp(f.First.GetProp(4)) == 0 {
				if grand.Meet(1, 2) { //随机出手
					firstAttack, secondAttack = secondAttack, firstAttack //互换先手权
					f.First, f.Second = f.Second, f.First
				}
			}
		}
	}

	if firstAttack == nil && secondAttack == nil {
		firstAttack, secondAttack = secondAttack, firstAttack //互换先手权
		f.First, f.Second = f.Second, f.First
	}
	var attacker, defender *input.Input
	f.TrueFirst = f.First
	//开始回合操作
	for i := 0; i < 2; i++ {
		var originalSkill *info.SkillEntity //原始技能
		var currentSkill *info.SkillEntity  //当前技能
		var currentAction *action.SelectSkillAction
		if i == 0 {
			currentAction = firstAttack
			attacker, defender = f.getSkillParticipants(firstAttack)
			originalSkill = f.copySkill(firstAttack)
			//先手阶段，先修复后手效果
			f.Second.RecoverEffect()
		} else {
			currentAction = secondAttack
			attacker, defender = f.getSkillParticipants(secondAttack)
			originalSkill = f.copySkill(secondAttack)
			//取消后手历史效果
			f.Second.ReactvieEffect()
		}
		if attacker == nil {
			attacker = f.First
		}
		if defender == nil {
			defender = f.Second
		}

		currentSkill = originalSkill
		defender.ExecWithOpponent(attacker, func(effect input.Effect) bool { //这个是能否使用技能
			f.setEffectSkillContext(effect, currentSkill, defender)
			return effect.ActionStartEx(firstAttack, secondAttack)
		})
		canUseSkill := attacker.ExecWithOpponent(defender, func(effect input.Effect) bool { //这个是能否使用技能
			f.setEffectSkillContext(effect, currentSkill, defender)
			return effect.ActionStart(firstAttack, secondAttack)
		})

		attackerPet := attacker.CurrentPet()
		defenderPet := defender.CurrentPet()
		canUse := canUseSkill && action.CanUse(currentSkill) && attacker != nil && attackerPet != nil && attackerPet.Info.Hp > 0

		if !canUse {

			attacker.RecoverEffect()
			currentSkill = nil
			if i == 0 { //先手方被控,这时候应该算做未出手状态
				f.TrueFirst = defender
				for _, effect := range defender.EffectCache {
					effect.IsFirst(true)
				}

			}
			//先手权不一定出手

		} else {
			f.setActionAttackValue(currentAction)

			for _, effect := range attacker.EffectCache {
				effect.IsFirst(true)
			}
			f.processSkillAttack(attacker, defender, currentSkill)
			currentSkill = originalSkill //还原技能

			_, skill, ok := utils.FindWithIndex(attackerPet.Info.SkillList, func(item model.SkillInfo) bool {
				return item.ID == currentSkill.Info.ID
			})
			if ok {
				usecount := 1
				attacker.ExecWithOpponent(defender, func(effect input.Effect) bool { //技能使用后的我方效果
					f.setEffectSkillContext(effect, currentSkill, defender)
					effect.HookPP(&usecount)
					return true
				})
				skill.Use(usecount)
			}
		}
		if defenderPet != nil && defenderPet.Info.Hp > 0 {
			//技能使用后
			defender.ExecWithOpponent(attacker, func(effect input.Effect) bool { //技能使用后的我方效果
				f.setEffectSkillContext(effect, currentSkill, defender)
				effect.Skill_Use_ex()
				return true
			})
		}

		if attackerPet != nil && attackerPet.Info.Hp > 0 {
			//技能使用后
			attacker.ExecWithOpponent(defender, func(effect input.Effect) bool { //技能使用后的我方效果
				f.setEffectSkillContext(effect, currentSkill, defender)
				effect.Skill_Use()
				return true
			})
		}
		//技能使用后
		defender.ExecWithOpponent(attacker, func(effect input.Effect) bool { //技能使用后的我方效果
			f.setEffectSkillContext(effect, currentSkill, defender)
			effect.Action_end_ex()
			return true
		})
		//技能使用后
		attacker.ExecWithOpponent(defender, func(effect input.Effect) bool { //技能使用后的我方效果
			f.setEffectSkillContext(effect, currentSkill, defender)
			effect.Action_end()
			return true
		})

		if defenderPet != nil && attackerPet != nil && defenderPet.Info.Hp <= 0 && attackerPet.Info.Hp <= 0 { //先手方死亡,触发反同归于尽
			attackerPet.Info.Hp = 1
		}
		if defenderPet != nil && defenderPet.Info.Hp <= 0 {

			f.TURNOVER(defender)

			break
		}
		if attackerPet != nil && attackerPet.Info.Hp <= 0 {
			f.TURNOVER(attacker)

			break
		}

	}

	f.Broadcast(func(ff *input.Input) {
		ff.GenSataus()
		ff.Exec(func(t input.Effect) bool { //这个是能否使用技能
			//结算状态
			t.TurnEnd() //返回本身结算,如果false,说明不能使用技能了
			return true
		})
		ff.GenInfo()
		ff.SnapshotTurnProp()
	})
	if f.TrueFirst != f.First {
		f.First, f.Second = f.Second, f.First

	}

	if f.LegacyGroupProtocol {
		f.sendLegacyRoundBroadcast(firstAttack, secondAttack)
	}

	attackValueResult := f.buildNoteUseSkillOutboundInfo()
	//因为切完才能广播,所以必须和回合结束分开结算
	f.Broadcast(func(fighter *input.Input) {
		for _, switchAction := range f.Switch {
			if fighter.Player.GetInfo().UserID != switchAction.Reason.UserId {
				//		println("切精灵", switchAction.Reason.UserId, switchAction.Reason.ID)
				fighter.Player.SendPackCmd(2407, &switchAction.Reason)
			}
		}
	})
	f.Switch = make(map[actionSlotKey]*action.ActiveSwitchAction)
	if f.closefight && f.Info.Mode == info.BattleMode.PET_MELEE {
		// f.Broadcast(func(fighter *input.Input) {
		// 	if fighter.UserID != f.WinnerId {
		// 		fighter.Player.SendPackCmd(2505, &attackValueResult)
		// 	}

		// })
		return
	}
	f.Broadcast(func(fighter *input.Input) {
		fighter.Player.SendPackCmd(2505, &attackValueResult)
		fighter.CanChange = 0
	})
	if f.closefight {
		return
	}

}
func (f *FightC) TURNOVER(cur *input.Input) {
	var _hasBackup bool
	if cur == nil {
		return
	}
	for _, pet := range cur.BenchPets() {
		if pet != nil && pet.Info.Hp > 0 {
			_hasBackup = true
			break
		}
	}
	f.sendLegacySpriteDie(cur, _hasBackup)

	f.Broadcast(func(ff *input.Input) {

		ff.Exec(func(t input.Effect) bool {

			t.SwitchOut(cur)

			return true
		})
	})
	if f.IsWin(f.GetInputByPlayer(cur.Player, true)) { //然后检查是否战斗结束

		f.FightOverInfo.WinnerId = f.GetInputByPlayer(cur.Player, true).UserID
		f.FightOverInfo.Reason = model.BattleOverReason.DefaultEnd
		f.WinnerId = f.FightOverInfo.WinnerId
		f.Reason = model.BattleOverReason.DefaultEnd

		f.closefight = true
		//	break
	}
}