124 lines
4.1 KiB
Go
124 lines
4.1 KiB
Go
// Copyright 2026 tamakyi. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package db
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import (
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"context"
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"time"
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"github.com/pkg/errors"
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"gorm.io/gorm"
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)
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// ReportsStore 举报记录的读写。
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//
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// 举报只是「信号」，处置仍然由箱主（在 /user 面板删/设私密）或运维（CLI）完成 ——
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// 本项目没有管理后台，所以这里不提供「审核队列」之类的方法，只做写入与计数。
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type ReportsStore interface {
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// Create 写入一条举报。返回 created=false 表示该 IP 已举报过同一内容（唯一索引冲突），
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// 属于幂等成功：调用方不应据此提示用户「已举报过」，否则会成为内容存在性的探测接口。
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Create(ctx context.Context, opts CreateReportOptions) (bool, error)
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// QuestionIDsByUser 返回某箱主名下「被举报的提问 ID -> 待处理举报数」。
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// 箱主列表用它打标；已删除的提问不计入。
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QuestionIDsByUser(ctx context.Context, userID uint) (map[uint]int64, error)
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// CountByUserSince 统计某箱主自 since 起收到的待处理举报总数（邮件告警的触发依据）。
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CountByUserSince(ctx context.Context, userID uint, since time.Time) (int64, error)
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}
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// Reports 举报记录全局 store，由 db.Init 装配。
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var Reports ReportsStore
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var _ ReportsStore = (*reports)(nil)
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// 举报理由白名单。做成固定枚举而不是自由文本：自由填写等于又开了一个可以写辱骂内容的输入框，
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// 而举报本身并不需要精确描述。
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const (
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ReportReasonHarassment = "harassment" // 人身攻击 / 辱骂
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ReportReasonDoxxing = "doxxing" // 曝光他人账号或作品
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ReportReasonDivisive = "divisive" // 挑起群体对立
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ReportReasonOther = "other" // 其他
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)
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// IsValidReportReason 校验举报理由。
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func IsValidReportReason(reason string) bool {
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switch reason {
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case ReportReasonHarassment, ReportReasonDoxxing, ReportReasonDivisive, ReportReasonOther:
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return true
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default:
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return false
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}
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}
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// CreateReportOptions 写入举报的入参。
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type CreateReportOptions struct {
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QuestionID uint
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ReporterIP string
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Reason string
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}
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func NewReportsStore(db *gorm.DB) ReportsStore {
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return &reports{db: db}
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}
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type reports struct {
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db *gorm.DB
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}
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func (s *reports) Create(ctx context.Context, opts CreateReportOptions) (bool, error) {
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report := &ContentReport{
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QuestionID: opts.QuestionID,
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ReporterIP: opts.ReporterIP,
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Reason: opts.Reason,
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Status: ReportStatusPending,
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}
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if err := s.db.WithContext(ctx).Create(report).Error; err != nil {
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// (question_id, reporter_ip) 唯一索引：同一个人对同一条内容只能报一次。
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// 静默视为成功，避免通过「已举报过」的提示反查内容是否存在。
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if isDuplicateKeyError(err) {
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return false, nil
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}
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return false, errors.Wrap(err, "create content report")
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}
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return true, nil
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}
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func (s *reports) QuestionIDsByUser(ctx context.Context, userID uint) (map[uint]int64, error) {
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type row struct {
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QuestionID uint
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Count int64
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}
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var rows []*row
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if err := s.db.WithContext(ctx).
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Table("content_reports AS r").
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Select("r.question_id AS question_id, COUNT(r.id) AS count").
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Joins("JOIN questions q ON q.id = r.question_id").
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Where("q.user_id = ? AND q.deleted_at IS NULL", userID).
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Where("r.status = ?", ReportStatusPending).
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Group("r.question_id").
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Scan(&rows).Error; err != nil {
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return nil, errors.Wrap(err, "count reports by user")
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}
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counts := make(map[uint]int64, len(rows))
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for _, r := range rows {
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counts[r.QuestionID] = r.Count
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}
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return counts, nil
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}
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func (s *reports) CountByUserSince(ctx context.Context, userID uint, since time.Time) (int64, error) {
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var count int64
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if err := s.db.WithContext(ctx).
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Table("content_reports AS r").
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Joins("JOIN questions q ON q.id = r.question_id").
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Where("q.user_id = ? AND q.deleted_at IS NULL", userID).
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Where("r.status = ?", ReportStatusPending).
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Where("r.created_at >= ?", since).
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Count(&count).Error; err != nil {
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return 0, errors.Wrap(err, "count reports since")
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}
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return count, nil
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}
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