package entities

import (
	"time"

	"github.com/google/uuid"
	"gorm.io/gorm"
)

// InvitationStatus 邀请状态
type InvitationStatus string

const (
	InvitationStatusPending  InvitationStatus = "pending"
	InvitationStatusConsumed InvitationStatus = "consumed"
	InvitationStatusRevoked  InvitationStatus = "revoked"
)

// SubordinateInvitation 主账号邀请记录（存 token 哈希）
type SubordinateInvitation struct {
	ID         string `gorm:"primaryKey;type:varchar(36)" json:"id" comment:"唯一标识"`
	ParentUserID string `gorm:"type:varchar(36);not null;index" json:"parent_user_id" comment:"主账号用户ID"`
	TokenHash  string `gorm:"type:varchar(64);not null;uniqueIndex" json:"-" comment:"邀请码的SHA256(十六进制)"`
	ExpiresAt  time.Time `gorm:"not null;index" json:"expires_at" comment:"过期时间"`
	Status     InvitationStatus `gorm:"type:varchar(20);not null;default:pending" json:"status" comment:"状态"`

	ConsumedByUserID *string    `gorm:"type:varchar(36);index" json:"consumed_by_user_id,omitempty" comment:"核销后的子账号用户ID"`
	ConsumedAt       *time.Time `json:"consumed_at,omitempty" comment:"核销时间"`

	CreatedAt time.Time      `gorm:"autoCreateTime" json:"created_at"`
	UpdatedAt time.Time      `gorm:"autoUpdateTime" json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 表名
func (SubordinateInvitation) TableName() string {
	return "subordinate_invitations"
}

// BeforeCreate 生成ID
func (i *SubordinateInvitation) BeforeCreate(tx *gorm.DB) error {
	if i.ID == "" {
		i.ID = uuid.New().String()
	}
	return nil
}