package model

import (
	"time"

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

// AuditTargetType 审核对象类型
type AuditTargetType string

const (
	AuditTargetTypePost    AuditTargetType = "post"    // 帖子
	AuditTargetTypeComment AuditTargetType = "comment" // 评论
	AuditTargetTypeMessage AuditTargetType = "message" // 私信
	AuditTargetTypeUser    AuditTargetType = "user"    // 用户资料
	AuditTargetTypeImage   AuditTargetType = "image"   // 图片
)

// AuditResult 审核结果
type AuditResult string

const (
	AuditResultPass    AuditResult = "pass"    // 通过
	AuditResultReview  AuditResult = "review"  // 需人工复审
	AuditResultBlock   AuditResult = "block"   // 违规拦截
	AuditResultUnknown AuditResult = "unknown" // 未知
)

// AuditRiskLevel 风险等级
type AuditRiskLevel string

const (
	AuditRiskLevelLow    AuditRiskLevel = "low"    // 低风险
	AuditRiskLevelMedium AuditRiskLevel = "medium" // 中风险
	AuditRiskLevelHigh   AuditRiskLevel = "high"   // 高风险
)

// AuditSource 审核来源
type AuditSource string

const (
	AuditSourceAuto     AuditSource = "auto"     // 自动审核
	AuditSourceManual   AuditSource = "manual"   // 人工审核
	AuditSourceCallback AuditSource = "callback" // 回调审核
)

// AuditLog 审核日志实体
type AuditLog struct {
	ID           string          `json:"id" gorm:"type:varchar(36);primaryKey"`
	TargetType   AuditTargetType `json:"target_type" gorm:"type:varchar(50);index"`
	TargetID     string          `json:"target_id" gorm:"type:varchar(255);index"`
	Content      string          `json:"content" gorm:"type:text"`             // 待审核内容
	ContentType  string          `json:"content_type" gorm:"type:varchar(50)"` // 内容类型: text, image
	ContentURL   string          `json:"content_url" gorm:"type:text"`         // 图片/文件URL
	AuditType    string          `json:"audit_type" gorm:"type:varchar(50)"`   // 审核类型: porn, violence, ad, political, fraud, gamble
	Result       AuditResult     `json:"result" gorm:"type:varchar(50);index"`
	RiskLevel    AuditRiskLevel  `json:"risk_level" gorm:"type:varchar(20)"`
	Labels       string          `json:"labels" gorm:"type:text"`                 // JSON数组，标签列表
	Suggestion   string          `json:"suggestion" gorm:"type:varchar(50)"`      // pass, review, block
	Detail       string          `json:"detail" gorm:"type:text"`                 // 详细说明
	ThirdPartyID string          `json:"third_party_id" gorm:"type:varchar(255)"` // 第三方审核服务返回的ID
	Source       AuditSource     `json:"source" gorm:"type:varchar(20);default:auto"`
	ReviewerID   string          `json:"reviewer_id" gorm:"type:varchar(255)"`           // 审核人ID（人工审核时使用）
	ReviewerName string          `json:"reviewer_name" gorm:"type:varchar(100)"`         // 审核人名称
	ReviewTime   *time.Time      `json:"review_time" gorm:"index"`                       // 审核时间
	UserID       string          `json:"user_id" gorm:"type:varchar(255);index"`         // 内容发布者ID
	UserIP       string          `json:"user_ip" gorm:"type:varchar(45)"`                // 用户IP
	Status       string          `json:"status" gorm:"type:varchar(20);default:pending"` // pending, completed, failed
	RejectReason string          `json:"reject_reason" gorm:"type:text"`                 // 拒绝原因（人工审核时使用）
	ExtraData    string          `json:"extra_data" gorm:"type:text"`                    // 额外数据，JSON格式
	CreatedAt    time.Time       `json:"created_at" gorm:"autoCreateTime"`
	UpdatedAt    time.Time       `json:"updated_at" gorm:"autoUpdateTime"`
	DeletedAt    gorm.DeletedAt  `json:"-" gorm:"index"`
}

// BeforeCreate 创建前生成UUID
func (al *AuditLog) BeforeCreate(tx *gorm.DB) error {
	if al.ID == "" {
		al.ID = uuid.New().String()
	}
	return nil
}

func (AuditLog) TableName() string {
	return "audit_logs"
}

// AuditLogRequest 创建审核日志请求
type AuditLogRequest struct {
	TargetType  AuditTargetType `json:"target_type" validate:"required"`
	TargetID    string          `json:"target_id" validate:"required"`
	Content     string          `json:"content"`
	ContentType string          `json:"content_type"`
	ContentURL  string          `json:"content_url"`
	AuditType   string          `json:"audit_type"`
	UserID      string          `json:"user_id"`
	UserIP      string          `json:"user_ip"`
}

// AuditLogListItem 审核日志列表项
type AuditLogListItem struct {
	ID          string          `json:"id"`
	TargetType  AuditTargetType `json:"target_type"`
	TargetID    string          `json:"target_id"`
	Content     string          `json:"content"`
	ContentType string          `json:"content_type"`
	Result      AuditResult     `json:"result"`
	RiskLevel   AuditRiskLevel  `json:"risk_level"`
	Suggestion  string          `json:"suggestion"`
	Source      AuditSource     `json:"source"`
	ReviewerID  string          `json:"reviewer_id"`
	ReviewTime  *time.Time      `json:"review_time"`
	UserID      string          `json:"user_id"`
	Status      string          `json:"status"`
	CreatedAt   time.Time       `json:"created_at"`
}