0904
This commit is contained in:
tamakyi
@@ -0,0 +1,546 @@
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// Copyright 2022 E99p1ant. 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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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"github.com/thanhpk/randstr"
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"gorm.io/datatypes"
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"gorm.io/gorm"
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"github.com/tamakyi/TamaBox/internal/dbutil"
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)
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var Questions QuestionsStore
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type QuestionsStore interface {
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Create(ctx context.Context, opts CreateQuestionOptions) (*Question, error)
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GetByID(ctx context.Context, id uint) (*Question, error)
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GetByUserID(ctx context.Context, userID uint, opts GetQuestionsByUserIDOptions) ([]*Question, error)
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GetByAskUserID(ctx context.Context, userID uint, opts GetQuestionsByAskUserIDOptions) ([]*Question, error)
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AnswerByID(ctx context.Context, id uint, answer string) error
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DeleteByID(ctx context.Context, id uint) error
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UpdateCensor(ctx context.Context, id uint, opts UpdateQuestionCensorOptions) error
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Count(ctx context.Context, userID uint, opts GetQuestionsCountOptions) (int64, error)
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SetPrivate(ctx context.Context, id uint) error
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SetPublic(ctx context.Context, id uint) error
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SetPinned(ctx context.Context, id uint, pinned bool) error
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SetRead(ctx context.Context, id uint) error
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SetUnread(ctx context.Context, id uint) error
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SearchByUserID(ctx context.Context, userID uint, keyword string) ([]*Question, error)
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GetHotQuestions(ctx context.Context, limit int) ([]*Question, error)
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// 全站统计
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QuestionStats(ctx context.Context) (*QuestionStats, error)
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}
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// QuestionStats 全站提问聚合统计（不按单个用户过滤，供首页"提问箱信息统计"使用）。
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type QuestionStats struct {
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TotalQuestions int64
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AnsweredQuestions int64
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LastQuestionAt *time.Time // 最后一个提问发生时间（questions.created_at 最大值）
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LastAnswerAt *time.Time // 最后一个回答发生时间（已回答问题的 updated_at 最大值）
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}
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func NewQuestionsStore(db *gorm.DB) QuestionsStore {
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return &questions{db}
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}
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type questions struct {
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*gorm.DB
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}
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type Question struct {
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dbutil.Model
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FromIP string `json:"-"`
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UserID uint `gorm:"index:idx_question_user_id" json:"-"`
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Content string `json:"content"`
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ContentCensorMetadata datatypes.JSON `json:"-"`
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Token string `json:"-"`
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Answer string `json:"answer"`
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AnswerCensorMetadata datatypes.JSON `json:"-"`
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ReceiveReplyEmail string `json:"-"`
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AskerUserID uint `json:"-"`
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IsPrivate bool `gorm:"default: FALSE; NOT NULL" json:"-"`
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IsPinned bool `gorm:"default: FALSE; NOT NULL" json:"is_pinned"`
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// IsRead 标记箱主是否已读/处理过该提问。有效"已读" = IsRead=true 或 已有回答(answer != "")。
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// 已回答的问题恒为已读且锁定，不可改回未读（见 SetUnread 的 answer='' 条件与上层校验）。
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IsRead bool `gorm:"default: FALSE; NOT NULL" json:"is_read"`
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}
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type CreateQuestionOptions struct {
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FromIP string
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UserID uint
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Content string
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ReceiveReplyEmail string
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AskerUserID uint
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IsPrivate bool
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}
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func (db *questions) Create(ctx context.Context, opts CreateQuestionOptions) (*Question, error) {
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question := Question{
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FromIP: opts.FromIP,
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UserID: opts.UserID,
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Token: randstr.String(6),
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Content: opts.Content,
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ReceiveReplyEmail: opts.ReceiveReplyEmail,
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AskerUserID: opts.AskerUserID,
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IsPrivate: opts.IsPrivate,
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}
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return &question, db.WithContext(ctx).Create(&question).Error
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}
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type UpdateQuestionCensorOptions struct {
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ContentCensorMetadata json.RawMessage
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AnswerCensorMetadata json.RawMessage
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}
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func (db *questions) UpdateCensor(ctx context.Context, id uint, opts UpdateQuestionCensorOptions) error {
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question, err := db.GetByID(ctx, id)
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if err != nil {
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return errors.Wrap(err, "get by ID")
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}
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contentCensorMetadata := question.ContentCensorMetadata
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if checkTextCensorResponseValid(opts.ContentCensorMetadata) {
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contentCensorMetadata = datatypes.JSON(opts.ContentCensorMetadata)
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}
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answerCensorMetadata := question.AnswerCensorMetadata
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if checkTextCensorResponseValid(opts.AnswerCensorMetadata) {
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answerCensorMetadata = datatypes.JSON(opts.AnswerCensorMetadata)
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}
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return db.WithContext(ctx).Model(&Question{}).Where("id = ?", id).Updates(&Question{
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ContentCensorMetadata: contentCensorMetadata,
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AnswerCensorMetadata: answerCensorMetadata,
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}).Error
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}
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func checkTextCensorResponseValid(raw json.RawMessage) bool {
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if len(raw) == 0 {
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return false
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}
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if bytes.EqualFold(raw, []byte("null")) {
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return false
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}
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var response struct {
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SourceName string `json:"source_name"`
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}
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if err := json.Unmarshal(raw, &response); err != nil {
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return false
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}
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return response.SourceName != ""
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}
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var ErrQuestionNotExist = errors.New("提问不存在")
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func (db *questions) GetByID(ctx context.Context, id uint) (*Question, error) {
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var question Question
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if err := db.WithContext(ctx).First(&question, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrQuestionNotExist
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}
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return nil, errors.Wrap(err, "get question by ID")
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}
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return &question, nil
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}
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type GetQuestionsByUserIDOptions struct {
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*dbutil.Cursor
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FilterAnswered bool // 已废弃，推荐使用 AnsweredStatus
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ShowPrivate bool // 已废弃，推荐使用 PrivateStatus
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AnsweredStatus int // 0: 全部, 1: 已回答, 2: 未回答
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PrivateStatus int // 0: 全部, 1: 仅公开(is_private=false), 2: 仅私密(is_private=true)
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ReadStatus int // 0: 全部, 1: 已读(is_read=true 或已回答), 2: 未读
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SortOrder string // "ASC" 或 "DESC"，默认 "DESC"
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PinFirst bool // 置顶优先：is_pinned 的提问排在最前（公开主页使用）
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}
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// GetByUserID 根据用户 ID 获取提问列表，支持游标分页
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func (db *questions) GetByUserID(ctx context.Context, userID uint, opts GetQuestionsByUserIDOptions) ([]*Question, error) {
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q := db.WithContext(ctx).Model(&Question{}).Where("user_id = ?", userID)
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// 回答状态筛选
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if opts.AnsweredStatus == 1 {
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q = q.Where("answer != ''")
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} else if opts.AnsweredStatus == 2 {
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q = q.Where("answer = ''")
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} else if opts.FilterAnswered {
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// 兼容旧调用
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q = q.Where("answer != ''")
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}
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// 私密状态筛选
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if opts.PrivateStatus == 1 {
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q = q.Where("is_private = false")
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} else if opts.PrivateStatus == 2 {
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q = q.Where("is_private = true")
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} else if !opts.ShowPrivate && opts.PrivateStatus == 0 {
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// 兼容旧调用：如果 ShowPrivate=false 且未指定 PrivateStatus，则过滤私密
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q = q.Where("is_private = false")
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}
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// 阅读状态筛选：已读 = is_read=true 或已回答；未读 = is_read=false 且未回答。
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// 使用括号包裹 OR 条件，避免与前面的 user_id 等条件产生 AND/OR 优先级问题。
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if opts.ReadStatus == 1 {
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q = q.Where("(is_read = ? OR answer != '')", true)
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} else if opts.ReadStatus == 2 {
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q = q.Where("(is_read = ? AND answer = '')", false)
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}
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// 排序方向先规范化，游标方向依赖它（ASC=下一页 id 更大，DESC=下一页 id 更小）。
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sortOrder := opts.SortOrder
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if sortOrder == "" {
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sortOrder = "DESC"
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}
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if sortOrder != "ASC" && sortOrder != "DESC" {
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sortOrder = "DESC"
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}
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// 游标分页
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// 关键语义：携带游标却无法解析时，不再“忽略游标、从首页重新开始”。
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// 旧行为会导致「加载更多」重复返回第一页内容、按钮永不消失（内容重复的
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// 直接根因之一，见 history-template 的复合游标改造历史）。改为直接返回
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// 空列表：上层（ListAPI/Pager 等）据此判定 has_more=false，前端按钮收敛。
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if opts.Cursor != nil && opts.Cursor.Value != nil {
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cursorStr := fmt.Sprintf("%v", opts.Cursor.Value)
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if cursorStr != "" {
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if opts.PinFirst {
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// 置顶优先场景下，排序为 (is_pinned DESC, created_at, id)，
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// 必须用"复合键集"（keyset）游标，否则置顶项与非置顶项 id 交错时
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// 单纯 id < 游标会漏掉介于置顶项 id 之间、但排在更后面的非置顶项。
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// 游标格式："<isPinned>.<createdAtUnixNano>.<id>"。
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isPinned, createdAt, idVal, ok := parsePinCursor(cursorStr)
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if !ok {
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return []*Question{}, nil
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}
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// 排序为 (is_pinned DESC, created_at DESC, id DESC)，下一页 = 排序序位严格在游标之后的行。
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// 注意：is_pinned 在 PG 下是 boolean，与整型比较（boolean < integer）无操作符会直接报错，
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// 因此必须传 Go bool 而非 0/1 整型（MySQL 下 bool 亦兼容 tinyint）。
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// 游标位于置顶段时，后续行 = 置顶段内 (created_at,id) 更小 + 全部非置顶段；
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// 游标位于非置顶段时，后续行 = 非置顶段内 (created_at,id) 更小。
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if isPinned == 1 {
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q = q.Where(
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"(is_pinned = ? AND created_at < ?) OR (is_pinned = ? AND created_at = ? AND id < ?) OR (is_pinned = ?)",
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true, createdAt, true, createdAt, idVal, false,
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)
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} else {
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q = q.Where(
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"(is_pinned = ? AND created_at < ?) OR (is_pinned = ? AND created_at = ? AND id < ?)",
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false, createdAt, false, createdAt, idVal,
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)
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}
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} else {
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// 游标必须为纯数字 id：直接传 string 在 PG 下会因 integer < text 无操作符而报错。
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// 且 ASC（旧在前）时下一页 id 更大，DESC（新在前）时下一页 id 更小。
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idVal, err := strconv.ParseUint(cursorStr, 10, 64)
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if err != nil {
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// 同上：游标非法不再回退首页，直接收敛为空列表。
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return []*Question{}, nil
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}
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if sortOrder == "ASC" {
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q = q.Where("id > ?", idVal)
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} else {
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q = q.Where("id < ?", idVal)
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}
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}
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}
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}
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if opts.Cursor != nil {
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limit := opts.Cursor.Limit()
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q = q.Limit(limit)
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}
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if opts.PinFirst {
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// 公开主页：置顶优先；用 id 作为稳定 tiebreaker 保证排序完全确定。
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q = q.Order("is_pinned DESC, created_at " + sortOrder + ", id " + sortOrder)
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} else {
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q = q.Order("created_at " + sortOrder + ", id " + sortOrder)
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}
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var questions []*Question
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if err := q.Find(&questions).Error; err != nil {
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return nil, errors.Wrap(err, "get questions by user id")
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}
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return questions, nil
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}
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// parsePinCursor 解析 PinFirst 分页的复合键集游标，格式 "<isPinned>.<createdAtUnixNano>.<id>"。
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// 返回 (isPinned, createdAt, id, ok)；格式非法时 ok=false，调用方应忽略该游标（从首页重新开始）。
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//
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// 时区约定（务必保持，否则线上翻页会退化为首页死循环）：
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// EncodePinCursor 的 nano 取自 DB 读回的 CreatedAt.UnixNano()，生产列是
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// timestamp WITHOUT time zone，读写按「墙钟即 UTC」对称，因此 Parse 侧必须把 nano
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// 还原成 UTC 墙钟的 time.Time（time.Unix(0,nano).UTC()），再交给 GORM 与无时区列比较。
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// 若直接返回 time.Unix(0, nano)（Location=服务器本地时区），当进程 TZ 非 UTC 时
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// （如 Asia/Shanghai）墙钟会偏移 +8h，导致 keyset 条件 created_at < 偏移时间恒为真，
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// 游标形同虚设，每次请求都退回第一页 → 「加载更多」无限重复且按钮永不消失。
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func parsePinCursor(s string) (int, time.Time, uint, bool) {
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parts := strings.Split(s, ".")
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if len(parts) != 3 {
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return 0, time.Time{}, 0, false
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}
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isPinned, err := strconv.Atoi(parts[0])
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if err != nil {
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return 0, time.Time{}, 0, false
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}
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nano, err := strconv.ParseInt(parts[1], 10, 64)
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if err != nil {
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return 0, time.Time{}, 0, false
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}
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idVal, err := strconv.ParseUint(parts[2], 10, 64)
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if err != nil {
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return 0, time.Time{}, 0, false
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}
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return isPinned, time.Unix(0, nano).UTC(), uint(idVal), true
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}
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// EncodePinCursor 生成 PinFirst 分页游标（供路由层把末条记录编码进下一页游标）。
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func EncodePinCursor(isPinned bool, createdAt time.Time, id uint) string {
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v := 0
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if isPinned {
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v = 1
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}
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return fmt.Sprintf("%d.%d.%d", v, createdAt.UnixNano(), id)
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}
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type GetQuestionsByAskUserIDOptions struct {
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*dbutil.Cursor
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FilterAnswered bool
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ShowPrivate bool
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}
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func (db *questions) GetByAskUserID(ctx context.Context, userID uint, opts GetQuestionsByAskUserIDOptions) ([]*Question, error) {
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where := `asker_user_id = ?`
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args := userID
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if opts.FilterAnswered {
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where = `asker_user_id = ? AND answer != ''`
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}
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if !opts.ShowPrivate {
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where += ` AND is_private = false`
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}
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questions, err := db.getBy(ctx, opts.Cursor, where, args)
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if err != nil {
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return nil, errors.Wrap(err, "get by")
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}
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return questions, nil
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}
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// getBy 保留用于 GetByAskUserID 等旧逻辑
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func (db *questions) getBy(ctx context.Context, cursor *dbutil.Cursor, whereQuery string, args ...interface{}) ([]*Question, error) {
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var questions []*Question
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q := db.WithContext(ctx).Where(whereQuery, args...)
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if cursor != nil {
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cursorID := cursor.Value
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if cursorID != nil && fmt.Sprintf("%v", cursorID) != "" {
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// 游标必须为纯数字 id：直接传 string 在 PG 下会因 integer < text 无操作符而报错。
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// 解析失败不再忽略游标回退首页（会导致「加载更多」重复首页内容），
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// 直接收敛为空列表，令调用方按“无更多”处理。
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idVal, err := strconv.ParseUint(fmt.Sprintf("%v", cursorID), 10, 64)
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if err != nil {
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return []*Question{}, nil
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}
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if idVal > 0 {
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q = q.Where(`id < ?`, idVal)
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}
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}
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limit := cursor.Limit()
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q = q.Limit(limit)
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}
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q = q.Order("created_at DESC")
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if err := q.Find(&questions).Error; err != nil {
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return nil, errors.Wrap(err, "get questions by page ID")
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}
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return questions, nil
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}
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func (db *questions) AnswerByID(ctx context.Context, id uint, answer string) error {
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||||
var question Question
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if err := db.WithContext(ctx).First(&question, id).Error; err != nil {
|
||||
if errors.Is(err, gorm.ErrRecordNotFound) {
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return ErrQuestionNotExist
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||||
}
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return errors.Wrap(err, "get question by ID")
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||||
}
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||||
|
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if err := db.WithContext(ctx).Model(&question).Where("id = ?", id).
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||||
Updates(map[string]interface{}{"answer": answer, "is_read": true}).Error; err != nil {
|
||||
return errors.Wrap(err, "update question answer")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (db *questions) DeleteByID(ctx context.Context, id uint) error {
|
||||
var question Question
|
||||
if err := db.WithContext(ctx).First(&question, id).Error; err != nil {
|
||||
if errors.Is(err, gorm.ErrRecordNotFound) {
|
||||
return ErrQuestionNotExist
|
||||
}
|
||||
return errors.Wrap(err, "get question by ID")
|
||||
}
|
||||
|
||||
if err := db.WithContext(ctx).Delete(&Question{}, id).Error; err != nil {
|
||||
return errors.Wrap(err, "delete question")
|
||||
}
|
||||
|
||||
// 级联清理子表：追问与上传图片，避免删除提问后残留孤儿记录。
|
||||
if err := FollowUps.DeleteByQuestionID(ctx, id); err != nil {
|
||||
logrus.WithContext(ctx).WithError(err).Errorf("Failed to cascade delete follow ups for question %d", id)
|
||||
}
|
||||
if err := UploadImages.DeleteByQuestionID(ctx, id); err != nil {
|
||||
logrus.WithContext(ctx).WithError(err).Errorf("Failed to cascade delete upload images for question %d", id)
|
||||
}
|
||||
|
||||
// 回退定量收集计数：删除提问等价于少一条已收集内容，
|
||||
// 否则达上限后即便删掉旧提问，功能仍会显示 quota_reached 关闭，须手动重置计数。
|
||||
if question.UserID != 0 {
|
||||
if err := FeatureControls.IncrementQuota(ctx, question.UserID, FeatureQuestion, -1); err != nil {
|
||||
logrus.WithContext(ctx).WithError(err).Errorf("Failed to decrement question quota for user %d", question.UserID)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type GetQuestionsCountOptions struct {
|
||||
FilterAnswered bool
|
||||
ShowPrivate bool
|
||||
IsPrivate *bool // 非 nil 时按该值过滤 is_private
|
||||
IsPinned *bool // 非 nil 时按该值过滤 is_pinned
|
||||
ReadStatus int // 0: 全部, 1: 已读(is_read=true 或已回答), 2: 未读
|
||||
}
|
||||
|
||||
func (db *questions) Count(ctx context.Context, userID uint, opts GetQuestionsCountOptions) (int64, error) {
|
||||
q := db.WithContext(ctx).Model(&Question{})
|
||||
if opts.FilterAnswered {
|
||||
q = q.Where(`user_id = ? AND answer != ''`, userID)
|
||||
} else {
|
||||
q = q.Where(`user_id = ?`, userID)
|
||||
}
|
||||
if !opts.ShowPrivate {
|
||||
q = q.Where(`is_private = ?`, false)
|
||||
}
|
||||
if opts.IsPrivate != nil {
|
||||
q = q.Where(`is_private = ?`, *opts.IsPrivate)
|
||||
}
|
||||
if opts.IsPinned != nil {
|
||||
q = q.Where(`is_pinned = ?`, *opts.IsPinned)
|
||||
}
|
||||
// 阅读状态筛选：已读 = is_read=true 或已回答；未读 = is_read=false 且未回答。
|
||||
if opts.ReadStatus == 1 {
|
||||
q = q.Where("(is_read = ? OR answer != '')", true)
|
||||
} else if opts.ReadStatus == 2 {
|
||||
q = q.Where("(is_read = ? AND answer = '')", false)
|
||||
}
|
||||
|
||||
var count int64
|
||||
return count, q.Count(&count).Error
|
||||
}
|
||||
|
||||
func (db *questions) SetPrivate(ctx context.Context, id uint) error {
|
||||
return db.WithContext(ctx).Model(&Question{}).Where("id = ?", id).Update("is_private", true).Error
|
||||
}
|
||||
|
||||
// SetPinned 设置/取消问题的置顶状态。
|
||||
func (db *questions) SetPinned(ctx context.Context, id uint, pinned bool) error {
|
||||
return db.WithContext(ctx).Model(&Question{}).Where("id = ?", id).Update("is_pinned", pinned).Error
|
||||
}
|
||||
|
||||
func (db *questions) SetPublic(ctx context.Context, id uint) error {
|
||||
return db.WithContext(ctx).Model(&Question{}).Where("id = ?", id).Update("is_private", false).Error
|
||||
}
|
||||
|
||||
// SetRead 标记提问为已读（箱主侧手动标记，或作为其他语义化操作的前置状态）。
|
||||
func (db *questions) SetRead(ctx context.Context, id uint) error {
|
||||
return db.WithContext(ctx).Model(&Question{}).Where("id = ?", id).Update("is_read", true).Error
|
||||
}
|
||||
|
||||
// SetUnread 标记提问为未读。已回答的提问恒为已读且锁定，故追加 answer=” 条件：
|
||||
// 即使上层遗漏校验，也不会把已回答的提问错误地改回未读（纵深防御）。
|
||||
func (db *questions) SetUnread(ctx context.Context, id uint) error {
|
||||
return db.WithContext(ctx).Model(&Question{}).Where("id = ? AND answer = ''", id).Update("is_read", false).Error
|
||||
}
|
||||
|
||||
// SearchByUserID 全文搜索提问箱主人收到的提问（含私密，仅限本人管理后台使用）。
|
||||
// 使用 LIKE 模糊匹配问题内容与回答；keyword 中的通配符 % _ \ 会被转义，避免模式滥用。
|
||||
func (db *questions) SearchByUserID(ctx context.Context, userID uint, keyword string) ([]*Question, error) {
|
||||
escaped := escapeLike(keyword)
|
||||
var questions []*Question
|
||||
if err := db.WithContext(ctx).
|
||||
Where("user_id = ? AND (content LIKE ? OR answer LIKE ?)", userID, "%"+escaped+"%", "%"+escaped+"%").
|
||||
Order("created_at DESC").
|
||||
Find(&questions).Error; err != nil {
|
||||
return nil, errors.Wrap(err, "search questions by user id")
|
||||
}
|
||||
return questions, nil
|
||||
}
|
||||
|
||||
// escapeLike 转义 LIKE 模式中的特殊字符。
|
||||
func escapeLike(s string) string {
|
||||
r := strings.NewReplacer(`\`, `\\`, `%`, `\%`, `_`, `\_`)
|
||||
return r.Replace(s)
|
||||
}
|
||||
|
||||
// GetHotQuestions 返回"热门问题"：最新活跃的公开已回答提问（按回答更新时间倒序）。
|
||||
// 提问箱没有点赞数据，用"最近被回答"作为热度近似，适合主页/探索页展示。
|
||||
func (db *questions) GetHotQuestions(ctx context.Context, limit int) ([]*Question, error) {
|
||||
if limit <= 0 {
|
||||
limit = 10
|
||||
}
|
||||
var questions []*Question
|
||||
if err := db.WithContext(ctx).
|
||||
Where("is_private = ? AND answer != ''", false).
|
||||
Order("updated_at DESC").
|
||||
Limit(limit).
|
||||
Find(&questions).Error; err != nil {
|
||||
return nil, errors.Wrap(err, "get hot questions")
|
||||
}
|
||||
return questions, nil
|
||||
}
|
||||
|
||||
// QuestionStats 返回全站提问相关聚合统计。
|
||||
// 使用 gorm 查询构造器生成 COUNT / MAX，兼容 MySQL 与 PostgreSQL。
|
||||
// 最后一个回答时间取"已回答问题"的 updated_at 最大值——回答动作会更新 updated_at，
|
||||
// 与 crontab 旧逻辑（answer 非空记录中 updated_at 最大）一致。
|
||||
func (db *questions) QuestionStats(ctx context.Context) (*QuestionStats, error) {
|
||||
var total, answered int64
|
||||
if err := db.WithContext(ctx).Model(&Question{}).Count(&total).Error; err != nil {
|
||||
return nil, errors.Wrap(err, "count questions")
|
||||
}
|
||||
if err := db.WithContext(ctx).Model(&Question{}).Where("answer != ''").Count(&answered).Error; err != nil {
|
||||
return nil, errors.Wrap(err, "count answered questions")
|
||||
}
|
||||
|
||||
var t struct {
|
||||
LastQ *time.Time `gorm:"column:last_q"`
|
||||
LastA *time.Time `gorm:"column:last_a"`
|
||||
}
|
||||
if err := db.WithContext(ctx).Model(&Question{}).
|
||||
Select("MAX(created_at) AS last_q, MAX(CASE WHEN answer != '' THEN updated_at ELSE NULL END) AS last_a").
|
||||
Scan(&t).Error; err != nil {
|
||||
return nil, errors.Wrap(err, "get last question/answer time")
|
||||
}
|
||||
|
||||
return &QuestionStats{
|
||||
TotalQuestions: total,
|
||||
AnsweredQuestions: answered,
|
||||
LastQuestionAt: t.LastQ,
|
||||
LastAnswerAt: t.LastA,
|
||||
}, nil
|
||||
}
|
||||
Reference in New Issue
Block a user