package effect

import (
	element "blazing/common/data/Element"
	"blazing/common/utils"
	"blazing/logic/service/fight/action"
	"blazing/logic/service/fight/info"
	"blazing/logic/service/fight/input"
	"blazing/logic/service/fight/node"

	"github.com/alpacahq/alpacadecimal"
)

// 修正拼写错误：BaseSataus -> BaseStatus
type BaseStatus struct {
	node.EffectNode
	Status info.EnumPetStatus // 状态类型枚举
}

// 重写切换事件：我方单位切换时清除状态
func (e *BaseStatus) SwitchOut(in *input.Input) bool {
	// 我方单位下场时，状态失效
	if in == e.CarrierInput() {
		e.Alive(false)
	}
	return true
}

// 不能出手的基础状态（如麻痹、疲惫等）
type StatusCannotAct struct {
	BaseStatus
}

// 技能命中前拦截：阻止出手
func (e *StatusCannotAct) ActionStart(attacker, defender *action.SelectSkillAction) bool {
	return false
}

// 疲惫状态：仅限制攻击技能，本回合属性技能仍可正常使用。
type StatusTired struct {
	BaseStatus
}

func (e *StatusTired) ActionStart(attacker, defender *action.SelectSkillAction) bool {
	if e.Ctx().SkillEntity == nil {
		return false
	}
	return e.Ctx().SkillEntity.Category() == info.Category.STATUS
}

// 睡眠状态：受击后解除
type StatusSleep struct {
	StatusCannotAct
	hasTriedAct bool
}

// 睡眠在“被攻击且未 miss”后立即解除，而不是等到技能使用后节点。
func (e *StatusSleep) DamageSubEx(zone *info.DamageZone) bool {
	if zone == nil || e.Ctx().SkillEntity == nil {
		return true
	}
	if e.Ctx().SkillEntity.Category() != info.Category.STATUS {
		e.Alive(false)
	}
	return true
}

func (e *StatusSleep) ActionStart(attacker, defender *action.SelectSkillAction) bool {
	if e.Duration() <= 0 {
		e.hasTriedAct = false
		return true
	}
	e.hasTriedAct = true
	return e.StatusCannotAct.ActionStart(attacker, defender)
}

func (e *StatusSleep) Skill_Use_ex() bool {
	if !e.hasTriedAct {
		return true
	}
	if e.Duration() <= 0 && e.Ctx().SkillEntity != nil && e.Ctx().Category() != info.Category.STATUS {
		e.Alive(false)
	}
	e.hasTriedAct = false
	return true
}

func (e *StatusSleep) TurnEnd() {
	e.hasTriedAct = false
}

// 持续伤害状态基类（中毒、冻伤、烧伤等）
type ContinuousDamage struct {
	BaseStatus
	isheal bool //是否回血
}

// 回合开始触发持续伤害，保证吃药/空过回合时也会正常结算。
func (e *ContinuousDamage) TurnStart(attacker, defender *action.SelectSkillAction) {
	carrier := e.CarrierInput()
	source := e.SourceInput()
	opp := e.TargetInput()
	if carrier == nil {
		return
	}
	damage := e.calculateDamage()

	carrier.Damage(source, &info.DamageZone{
		Type:   info.DamageType.True,
		Damage: damage,
	})
	if len(e.SideEffectArgs) == 0 {
		return
	}
	// 额外效果
	carrier.Damage(source, &info.DamageZone{
		Type:   info.DamageType.True,
		Damage: damage,
	})
	if opp == nil || opp.CurPet[0].GetHP().IntPart() == 0 {
		return
	}

	// 给对方回血（不受回血限制影响）
	opp.Heal(carrier, nil, damage)
}

// 计算伤害：最大生命值的1/8
func (e *ContinuousDamage) calculateDamage() alpacadecimal.Decimal {
	carrier := e.CarrierInput()
	if carrier == nil || carrier.CurPet[0] == nil {
		return alpacadecimal.Zero
	}
	return alpacadecimal.NewFromInt(int64(carrier.CurPet[0].Info.MaxHp)).
		Div(alpacadecimal.NewFromInt(8))
}

type Burned struct {
	ContinuousDamage //继承扣血类
}

func (e *Burned) SkillHit() bool {

	e.Ctx().SkillEntity.XML.Power /= 2
	return true
}

// 寄生种子状态：扣血同时给对方回血
type ParasiticSeed struct {
	node.EffectNode
	Status info.EnumPetStatus // 状态类型枚举
}

func (e *ParasiticSeed) SwitchOut(in *input.Input) bool {
	//如果我放切换
	if in == e.CarrierInput() {
		e.Alive(false)
	}
	return true
}

// 回合开始触发寄生效果。寄生属于完整回合流程的一部分，不依赖本回合是否成功出手。
func (e *ParasiticSeed) TurnStart(attacker, defender *action.SelectSkillAction) {
	carrier := e.CarrierInput()
	source := e.SourceInput()
	if carrier == nil {
		return
	}

	damage := alpacadecimal.NewFromInt(int64(carrier.CurPet[0].Info.MaxHp)).
		Div(alpacadecimal.NewFromInt(8))

	// 对我方造成真实伤害
	carrier.Damage(source, &info.DamageZone{
		Type:   info.DamageType.True,
		Damage: damage,
	})
	if source == nil || source.CurPet[0] == nil || source.CurPet[0].GetHP().IntPart() == 0 {
		return
	}

	// 给寄生种子的施放者回血（不受回血限制影响）
	source.Heal(carrier, nil, damage)
}

type Flammable struct {
	BaseStatus
}

func (e *Flammable) ActionStart(fattack *action.SelectSkillAction, sattack *action.SelectSkillAction) bool {
	if e.Ctx().SkillEntity == nil {
		return true
	}
	e.Ctx().SkillEntity.Accuracy.Sub(alpacadecimal.NewFromInt(30))

	return true

}
func (e *Flammable) Skill_Use_ex() bool {
	if e.Ctx().SkillEntity == nil {
		return true
	}

	if e.Ctx().SkillEntity.XML.Type != int(element.ElementTypeFire) {
		return true
	}
	// 获取状态效果
	eff := e.Ctx().Our.InitEffect(input.EffectType.Status, int(info.PetStatus.Burned))
	if eff == nil {
		return true
	}

	e.Ctx().Our.AddEffect(e.Ctx().Our, eff)

	return true

}

type Confused struct {
	BaseStatus
}

func (e *Confused) ActionStart(fattack *action.SelectSkillAction, sattack *action.SelectSkillAction) bool {
	if e.Ctx().SkillEntity == nil {
		return true
	}
	e.Ctx().SkillEntity.Accuracy.Sub(alpacadecimal.NewFromInt(80))
	ok, _, _ := e.Input.Player.Roll(5, 100)
	if !ok {
		return true
	}

	e.Ctx().Our.Damage(e.Ctx().Our, &info.DamageZone{
		Type:   info.DamageType.Fixed,
		Damage: alpacadecimal.NewFromInt(50),
	})
	return true

}

type Blind struct {
	BaseStatus
}

func (e *Blind) ActionStart(fattack, sattack *action.SelectSkillAction) bool {
	if e.Ctx().SkillEntity == nil {
		return true
	}

	e.Ctx().SkillEntity.Accuracy = e.Ctx().SkillEntity.Accuracy.Mul(alpacadecimal.NewFromFloat(0.5))
	return true
}

type Weakened struct {
	BaseStatus
}

func (e *Weakened) DamageDivEx(t *info.DamageZone) bool {
	// 1. 定义衰弱等级对应的倍率表（索引对应等级，0级无倍率）
	// 索引0: 0%（未衰弱）、1:25%、2:50%、3:100%、4:250%、5:500%
	weakenedMultiples := []alpacadecimal.Decimal{
		alpacadecimal.Zero,               // 0级
		alpacadecimal.NewFromFloat(0.25), // 1级（25%）
		alpacadecimal.NewFromFloat(0.5),  // 2级（50%）
		alpacadecimal.NewFromFloat(1.0),  // 3级（100%）
		alpacadecimal.NewFromFloat(2.5),  // 4级（250%）
		alpacadecimal.NewFromFloat(5.0),  // 5级（500%）
	}

	// 2. 校验并限制衰弱等级（≤0 直接返回，≥5 按5级算）
	level := e.Stack()
	if level <= 0 {
		return true
	}
	// 等级上限限制为5（避免越界）
	level = utils.Min(level, 5)

	// 3. 获取对应等级的倍率，计算最终伤害
	multiple := weakenedMultiples[level]
	// 伤害计算公式：原伤害 + 原伤害 × 倍率（等价于 原伤害 × (1+倍率)）
	t.Damage = t.Damage.Add(t.Damage.Mul(multiple))

	return true
}
func init() {
	// 注册持续伤害类状态
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.DrainedHP), &ParasiticSeed{})   // 寄生种子
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Poisoned), &ContinuousDamage{}) // 中毒
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Frozen), &ContinuousDamage{})   // 冻伤
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Burned), &Burned{})             // 烧伤
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Bleeding), &ContinuousDamage{}) // 流血
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Weakened), &Weakened{})         // 衰弱
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Confused), &Confused{})         // 混乱
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Blind), &Blind{})               // 失明
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Flammable), &Flammable{})       // 易燃
	// 批量注册不能行动的状态
	nonActingStatuses := []info.EnumPetStatus{
		info.PetStatus.Paralysis, // 麻痹
		info.PetStatus.Fear,      // 害怕
		info.PetStatus.Petrified, // 石化
	}
	for _, status := range nonActingStatuses {
		effect := &StatusCannotAct{}
		effect.Status = status
		input.InitEffect(input.EffectType.Status, int(status), effect)
	}

	tired := &StatusTired{}
	tired.Status = info.PetStatus.Tired
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Tired), tired)

	// 注册睡眠状态（使用枚举常量替代硬编码8）
	input.InitEffect(input.EffectType.Status, int(info.PetStatus.Sleep), &StatusSleep{})
}