package model

import (
	"blazing/cool"
	"fmt"
	"strings"

	"github.com/dop251/goja"
)

const (
	TableNameBossConfig = "config_boss" // BOSS配置表（全量包含基础/奖励/护盾/捕捉/特效/世界野怪/地图费用/战斗通用逻辑）
)

// BossConfig BOSS配置模型（覆盖所有补充的配置项：GBTL/非VIP费用/首场景/战斗通用逻辑）
type BossConfig struct {
	*cool.Model // 嵌入通用Model（包含ID/创建时间/更新时间等通用字段）
	PetBaseConfig

	MapID int32 `gorm:"not null;index;comment:'所属地图ID'" json:"map_id" description:"地图ID"`

	Ordernum int32  `gorm:"not null;default:0;comment:'排序'" json:"ordernum" description:"排序"`
	ParentID int32  `gorm:"not null;default:0;column:parentId;type:int" json:"parentId"` // 父ID
	Remark   string `gorm:"comment:'BOSS备注'" json:"remark"`
	//是否可捕捉MapPit
	IsCapture int      `gorm:"type:int;default:0;comment:'是否可捕捉'" json:"is_capture"`
	Script    string   `gorm:"size:1024;default:'';comment:'BOSS脚本'" json:"script"` //boss出招逻辑做成js脚本
	Rule      []uint32 `gorm:"type:jsonb; ;comment:'战胜规则'" json:"rule"`
}

// BossHookSkillContext 为脚本暴露当前精灵技能可用信息。
type BossHookSkillContext struct {
	SkillID uint32 `json:"skill_id"`
	PP      uint32 `json:"pp"`
	CanUse  bool   `json:"can_use"`
}

// BossHookPetContext 为脚本暴露战斗中双方精灵简要信息。
type BossHookPetContext struct {
	PetID     uint32 `json:"pet_id"`
	CatchTime uint32 `json:"catch_time"`
	Hp        uint32 `json:"hp"`
	MaxHp     uint32 `json:"max_hp"`
}

// BossHookAttackContext 参考 AttackValue，为脚本暴露关键战斗面板/结果字段。
type BossHookAttackContext struct {
	SkillID    uint32  `json:"skill_id"`
	AttackTime uint32  `json:"attack_time"`
	IsCritical uint32  `json:"is_critical"`
	LostHp     uint32  `json:"lost_hp"`
	GainHp     int32   `json:"gain_hp"`
	RemainHp   int32   `json:"remain_hp"`
	MaxHp      uint32  `json:"max_hp"`
	State      uint32  `json:"state"`
	Offensive  float32 `json:"offensive"`
	Status     []int8  `json:"status"`
	Prop       []int8  `json:"prop"`
}

// BossHookActionContext 为 boss 脚本提供可读写的出手上下文。
type BossHookActionContext struct {
	HookAction bool                   `json:"hookaction"` // effect 链原始 HookAction 判定
	Round      uint32                 `json:"round"`      // 当前回合数
	IsFirst    bool                   `json:"is_first"`   // 是否先手
	Our        *BossHookPetContext    `json:"our"`        // 我方当前精灵
	Opp        *BossHookPetContext    `json:"opp"`        // 对方当前精灵
	Skills     []BossHookSkillContext `json:"skills"`     // 我方技能
	OurAttack  *BossHookAttackContext `json:"our_attack"` // 我方AttackValue快照
	OppAttack  *BossHookAttackContext `json:"opp_attack"` // 对方AttackValue快照
	Action     string                 `json:"action"`     // auto/skill/switch
	SkillID    uint32                 `json:"skill_id"`   // action=skill
	CatchTime  uint32                 `json:"catch_time"` // action=switch

	UseSkillFn  func(skillID uint32)   `json:"-"`
	SwitchPetFn func(catchTime uint32) `json:"-"`
}

func (*BossConfig) TableName() string { return TableNameBossConfig }
func (*BossConfig) GroupName() string { return "default" }
func NewBossConfig() *BossConfig      { return &BossConfig{Model: cool.NewModel()} }

func init() {
	cool.CreateTable(&BossConfig{})
}

// RunHookActionScript 执行 BOSS 脚本 hookAction。
func (b *BossConfig) RunHookActionScript(hookAction any) (bool, error) {
	if b == nil || strings.TrimSpace(b.Script) == "" {
		return true, nil
	}

	program, err := goja.Compile("boss_hook_action.js", b.Script, false)
	if err != nil {
		return false, fmt.Errorf("compile boss script: %w", err)
	}

	vm := goja.New()
	vm.SetFieldNameMapper(goja.TagFieldNameMapper("json", true))
	bindBossScriptFunctions(vm, hookAction)

	if _, err = vm.RunProgram(program); err != nil {
		return false, fmt.Errorf("run boss script: %w", err)
	}

	var (
		callable goja.Callable
		ok       bool
	)
	for _, fnName := range []string{"hookAction", "HookAction", "hookaction"} {
		callable, ok = goja.AssertFunction(vm.Get(fnName))
		if ok {
			break
		}
	}
	if !ok {
		return false, fmt.Errorf("boss script function not found: hookAction")
	}

	result, err := callable(goja.Undefined(), vm.ToValue(hookAction))
	if err != nil {
		return false, fmt.Errorf("execute boss hookAction: %w", err)
	}

	if goja.IsUndefined(result) || goja.IsNull(result) {
		return defaultHookActionResult(hookAction), nil
	}
	return result.ToBoolean(), nil
}

func bindBossScriptFunctions(vm *goja.Runtime, hookAction any) {
	ctx, ok := hookAction.(*BossHookActionContext)
	if !ok || ctx == nil {
		return
	}

	_ = vm.Set("useSkill", func(call goja.FunctionCall) goja.Value {
		if ctx.UseSkillFn == nil || len(call.Arguments) == 0 {
			return goja.Undefined()
		}
		skillID := call.Arguments[0].ToInteger()
		if skillID < 0 {
			return goja.Undefined()
		}
		ctx.UseSkillFn(uint32(skillID))
		return goja.Undefined()
	})

	_ = vm.Set("switchPet", func(call goja.FunctionCall) goja.Value {
		if ctx.SwitchPetFn == nil || len(call.Arguments) == 0 {
			return goja.Undefined()
		}
		catchTime := call.Arguments[0].ToInteger()
		if catchTime < 0 {
			return goja.Undefined()
		}
		ctx.SwitchPetFn(uint32(catchTime))
		return goja.Undefined()
	})
}

func defaultHookActionResult(hookAction any) bool {
	if ctx, ok := hookAction.(*BossHookActionContext); ok {
		return ctx.HookAction
	}
	if val, ok := hookAction.(bool); ok {
		return val
	}
	return true
}