package model

import (
	"time"

	"gorm.io/gorm"
)

// ReportTargetType 举报目标类型
type ReportTargetType string

const (
	ReportTargetTypePost    ReportTargetType = "post"    // 帖子
	ReportTargetTypeComment ReportTargetType = "comment" // 评论
	ReportTargetTypeMessage ReportTargetType = "message" // 消息
)

// ReportStatus 举报处理状态
type ReportStatus string

const (
	ReportStatusPending    ReportStatus = "pending"    // 待处理
	ReportStatusProcessing ReportStatus = "processing" // 处理中
	ReportStatusResolved   ReportStatus = "resolved"   // 已确认违规
	ReportStatusRejected   ReportStatus = "rejected"   // 已驳回
)

// ReportReason 举报原因类型
type ReportReason string

const (
	ReportReasonSpam         ReportReason = "spam"         // 垃圾广告
	ReportReasonInappropriate ReportReason = "inappropriate" // 违规内容
	ReportReasonHarassment   ReportReason = "harassment"   // 辱骂/攻击
	ReportReasonMisinformation ReportReason = "misinformation" // 虚假信息
	ReportReasonOther        ReportReason = "other"        // 其他
)

// Report 举报实体
type Report struct {
	ID          string           `json:"id" gorm:"type:varchar(36);primaryKey"`
	ReporterID  string           `json:"reporter_id" gorm:"type:varchar(36);index;index:idx_reports_reporter_status,priority:1;not null"`
	TargetType  ReportTargetType `json:"target_type" gorm:"type:varchar(20);index;index:idx_reports_target_type_id,priority:1;index:idx_reports_target_status,priority:1;not null"`
	TargetID    string           `json:"target_id" gorm:"type:varchar(36);index:idx_reports_target_type_id,priority:2;index:idx_reports_target,priority:1;not null"`
	Reason      ReportReason     `json:"reason" gorm:"type:varchar(30);not null"`
	Description string           `json:"description" gorm:"type:text"`
	Status      ReportStatus     `json:"status" gorm:"type:varchar(20);default:pending;index:idx_reports_status_created,priority:1;index:idx_reports_reporter_status,priority:2;index:idx_reports_target_status,priority:2"`
	HandledBy   *string          `json:"handled_by" gorm:"type:varchar(36);index"`
	HandledAt   *time.Time       `json:"handled_at" gorm:"type:timestamp"`
	Result      *string          `json:"result" gorm:"type:text"`

	// 软删除
	DeletedAt gorm.DeletedAt `json:"-" gorm:"index"`

	// 时间戳
	CreatedAt time.Time `json:"created_at" gorm:"autoCreateTime;index:idx_reports_status_created,priority:2,sort:desc"`
	UpdatedAt time.Time `json:"updated_at" gorm:"autoUpdateTime"`
}

// BeforeCreate 创建前生成UUID
func (r *Report) BeforeCreate(tx *gorm.DB) error {
	SetUUIDIfEmpty(&r.ID)
	return nil
}

// TableName 指定表名
func (Report) TableName() string {
	return "reports"
}

// ReportStats 举报统计（用于缓存或查询结果）
type ReportStats struct {
	TargetType  ReportTargetType
	TargetID    string
	ReportCount int
	IsHidden    bool
}