566 lines
21 KiB
Go
566 lines
21 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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"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/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 Votes VotesStore
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// 投票状态
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const (
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VoteStatusDraft = "draft" // 草稿（未发布，不可访问）
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VoteStatusPublished = "published" // 进行中
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VoteStatusEnded = "ended" // 已结束
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VoteStatusArchived = "archived" // 归档
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// VoteStatusNotStarted 仅作为管理列表的"有效展示状态"（published + 未到开始时间），不入库。
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VoteStatusNotStarted = "not_started"
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)
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// 投票类型（收集方式）
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const (
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VoteTypeSingle = "single" // 单选
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VoteTypeMultiple = "multiple" // 多选
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VoteTypeRating = "rating" // 评分
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VoteTypeRank = "rank" // 排序
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VoteTypeForm = "form" // 结构化表单
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)
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// 展示可见性
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const (
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VoteVisibilityPublic = "public" // 探索页 + 提问箱页公开展示
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VoteVisibilityLinkOnly = "link_only" // 仅通过链接分享
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)
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// 投票范围
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const (
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VoteVoterScopeAnyone = "anyone" // 完全匿名可投
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VoteVoterScopeRegisteredOnly = "registered_only" // 仅注册用户可投
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)
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// 结果可见策略
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const (
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VoteShowResultAfterVote = "after_vote" // 投票后立即可见
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VoteShowResultAfterEnd = "after_end" // 结束后可见
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VoteShowResultOwnerOnly = "owner_only" // 仅主人可见
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)
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type VotesStore interface {
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Create(ctx context.Context, opts CreateVoteOptions) (*Vote, error)
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// CreateWithOptions 在单个事务里创建投票 + 选项 + 表单字段。
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// 任一步失败整体回滚，避免留下「有投票无选项」或「有选项无字段」的半成品。
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CreateWithOptions(ctx context.Context, opts CreateVoteOptions, optionContents []string, formFields []CreateVoteFormFieldOptions) (*Vote, error)
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GetByID(ctx context.Context, id uint) (*Vote, error)
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GetByToken(ctx context.Context, token string) (*Vote, error)
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ListByUserID(ctx context.Context, userID uint, opts ListVotesOptions) ([]*Vote, error)
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ListPublishedPublicByUserID(ctx context.Context, userID uint, limit int) ([]*Vote, error)
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ListPublishedPublic(ctx context.Context, limit int) ([]*Vote, error)
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GetHot(ctx context.Context, limit int) ([]*Vote, error)
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Update(ctx context.Context, id uint, opts UpdateVoteOptions) error
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// UpdateWithOptions 在单个事务里更新投票元信息 + 替换选项 + 替换表单字段。
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// 仅在草稿状态调用（发布后选项/字段锁定，避免破坏历史数据归因）。
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UpdateWithOptions(ctx context.Context, id uint, opts UpdateVoteOptions, optionContents []string, formFields []CreateVoteFormFieldOptions) error
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UpdateStatus(ctx context.Context, id uint, status string) error
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DeleteByID(ctx context.Context, id uint) error
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// DeleteWithCascade 在一个事务里真删投票及其选项、表单字段、提交记录。
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DeleteWithCascade(ctx context.Context, id uint) error
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CountByUserID(ctx context.Context, userID uint) (int64, error)
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}
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func NewVotesStore(db *gorm.DB) VotesStore {
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return &votes{db}
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}
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type votes struct {
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*gorm.DB
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}
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type Vote struct {
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dbutil.Model
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UserID uint `gorm:"index:idx_vote_user" json:"-"`
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Title string `gorm:"size:100" json:"title"`
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Description string `gorm:"type:text" json:"description"`
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Type string `gorm:"size:20;default:single" json:"type"`
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Status string `gorm:"size:20;default:draft;index" json:"status"`
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Visibility string `gorm:"size:20;default:public" json:"visibility"`
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VoterScope string `gorm:"size:20;default:anyone" json:"voter_scope"`
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ShowResult string `gorm:"size:20;default:after_vote" json:"show_result"`
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AllowCustom bool `gorm:"default:false" json:"allow_custom"`
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MaxChoices int `gorm:"default:1" json:"max_choices"`
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StartAt *time.Time `json:"start_at"`
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EndAt *time.Time `json:"end_at"`
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LinkToken string `gorm:"size:16;uniqueIndex" json:"-"`
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MaxVotesPerFingerprint int `gorm:"default:1" json:"-"`
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// ⚠️ 不要给 RequireCaptcha 加 gorm:"default:true" 标签：GORM 在 Create 时会把零值 false
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// 替换为字段默认值（true），导致「创建时不要求验证码」的配置被静默写成 true。
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// 当前业务硬编码 requireCaptcha=true（决策 #3），去掉标签不影响现状，但消除同类陷阱。
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RequireCaptcha bool `json:"-"`
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CensorMetadata datatypes.JSON `json:"-"`
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// QuotaLimit 定量收集上限：收集到该份数后自动结束投票（0 表示不限制）。
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// 与 EndAt 互补——EndAt 按时间关闭，QuotaLimit 按数量关闭。
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QuotaLimit int `gorm:"default:0" json:"quota_limit"`
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}
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// BeforeCreate 自动生成链接分享 token（与私信 Conversation.Token 同款模式，
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// 不可枚举，防止通过数字 ID 扫描他人投票）。
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func (v *Vote) BeforeCreate(tx *gorm.DB) error {
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if v.LinkToken == "" {
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v.LinkToken = randstr.String(12)
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}
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return nil
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}
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type CreateVoteOptions struct {
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UserID uint
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Title string
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Description string
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Type string
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Visibility string
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VoterScope string
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ShowResult string
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AllowCustom bool
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MaxChoices int
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StartAt *time.Time
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EndAt *time.Time
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MaxVotesPerFingerprint int
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RequireCaptcha bool
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CensorMetadata datatypes.JSON
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QuotaLimit int
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}
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func (db *votes) Create(ctx context.Context, opts CreateVoteOptions) (*Vote, error) {
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vote := &Vote{
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UserID: opts.UserID,
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Title: opts.Title,
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Description: opts.Description,
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Type: opts.Type,
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Visibility: opts.Visibility,
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VoterScope: opts.VoterScope,
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ShowResult: opts.ShowResult,
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AllowCustom: opts.AllowCustom,
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MaxChoices: opts.MaxChoices,
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StartAt: opts.StartAt,
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EndAt: opts.EndAt,
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MaxVotesPerFingerprint: opts.MaxVotesPerFingerprint,
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RequireCaptcha: opts.RequireCaptcha,
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CensorMetadata: opts.CensorMetadata,
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QuotaLimit: opts.QuotaLimit,
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}
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if err := db.WithContext(ctx).Create(vote).Error; err != nil {
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return nil, errors.Wrap(err, "create vote")
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}
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return vote, nil
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}
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// CreateWithOptions 在单个事务里创建投票 + 选项 + 表单字段。
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// 任一步失败整体回滚，避免留下「有投票无选项」或「有选项无字段」的半成品。
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func (db *votes) CreateWithOptions(ctx context.Context, opts CreateVoteOptions, optionContents []string, formFields []CreateVoteFormFieldOptions) (*Vote, error) {
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var vote *Vote
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err := db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
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v := &Vote{
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UserID: opts.UserID,
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Title: opts.Title,
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Description: opts.Description,
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Type: opts.Type,
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Visibility: opts.Visibility,
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VoterScope: opts.VoterScope,
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ShowResult: opts.ShowResult,
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AllowCustom: opts.AllowCustom,
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MaxChoices: opts.MaxChoices,
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StartAt: opts.StartAt,
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EndAt: opts.EndAt,
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MaxVotesPerFingerprint: opts.MaxVotesPerFingerprint,
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RequireCaptcha: opts.RequireCaptcha,
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CensorMetadata: opts.CensorMetadata,
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QuotaLimit: opts.QuotaLimit,
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}
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if err := tx.Create(v).Error; err != nil {
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return errors.Wrap(err, "create vote")
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}
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vote = v
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if len(optionContents) > 0 {
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options := make([]*VoteOption, 0, len(optionContents))
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for i, content := range optionContents {
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options = append(options, &VoteOption{VoteID: v.ID, Content: content, SortOrder: i})
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}
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if err := tx.Create(&options).Error; err != nil {
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return errors.Wrap(err, "create vote options")
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}
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}
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if len(formFields) > 0 {
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fields := make([]*VoteFormField, 0, len(formFields))
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for _, f := range formFields {
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fields = append(fields, &VoteFormField{
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VoteID: v.ID,
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FieldType: f.FieldType,
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Label: f.Label,
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Required: f.Required,
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MaxLength: f.MaxLength,
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Options: f.Options,
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SortOrder: f.SortOrder,
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AllowCustom: f.AllowCustom,
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})
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}
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if err := tx.Create(&fields).Error; err != nil {
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return errors.Wrap(err, "create vote form fields")
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}
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return vote, nil
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}
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var ErrVoteNotExist = errors.New("投票不存在")
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func (db *votes) GetByID(ctx context.Context, id uint) (*Vote, error) {
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var vote Vote
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if err := db.WithContext(ctx).First(&vote, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrVoteNotExist
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}
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return nil, errors.Wrap(err, "get vote by ID")
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}
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return &vote, nil
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}
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func (db *votes) GetByToken(ctx context.Context, token string) (*Vote, error) {
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var vote Vote
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if err := db.WithContext(ctx).Where("link_token = ?", token).First(&vote).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrVoteNotExist
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}
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return nil, errors.Wrap(err, "get vote by token")
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}
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return &vote, nil
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}
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type ListVotesOptions struct {
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*dbutil.Cursor
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Status string // 空 = 全部；否则按状态筛选（draft/published/ended/archived）
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}
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// ListByUserID 根据箱主 ID 获取投票列表，支持游标分页与状态筛选。
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func (db *votes) ListByUserID(ctx context.Context, userID uint, opts ListVotesOptions) ([]*Vote, error) {
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q := db.WithContext(ctx).Model(&Vote{}).Where("user_id = ?", userID)
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if opts.Status != "" {
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q = q.Where("status = ?", opts.Status)
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}
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if opts.Cursor != nil && opts.Cursor.Value != nil {
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cursorStr := strings.TrimSpace(cursorValueToString(opts.Cursor.Value))
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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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if idVal, err := strconv.ParseUint(cursorStr, 10, 64); err == nil && idVal > 0 {
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q = q.Where("id < ?", idVal)
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}
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// 解析失败则忽略该游标（从首页重新开始），与提问列表游标行为一致。
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}
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if opts.Cursor != nil {
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q = q.Limit(opts.Cursor.Limit())
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}
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q = q.Order("created_at DESC")
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var votes []*Vote
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if err := q.Find(&votes).Error; err != nil {
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return nil, errors.Wrap(err, "list votes by user id")
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}
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return votes, nil
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}
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// ListPublishedPublicByUserID 获取箱主"进行中"的公开投票（提问箱页内嵌板块用）：
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// status=published 且 visibility=public，且在开始/结束时间窗内，按创建时间倒序。
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func (db *votes) ListPublishedPublicByUserID(ctx context.Context, userID uint, limit int) ([]*Vote, error) {
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if limit <= 0 {
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limit = 3
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}
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now := time.Now()
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q := db.WithContext(ctx).Model(&Vote{}).
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Where("user_id = ? AND status = ? AND visibility = ?", userID, VoteStatusPublished, VoteVisibilityPublic).
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Where("(start_at IS NULL OR start_at <= ?)", now).
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Where("(end_at IS NULL OR end_at > ?)", now).
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Order("created_at DESC").
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Limit(limit)
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var votes []*Vote
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if err := q.Find(&votes).Error; err != nil {
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return nil, errors.Wrap(err, "list published public votes by user id")
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}
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return votes, nil
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}
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// ListPublishedPublic 返回探索页可展示的公开投票，按创建时间倒序。
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func (db *votes) ListPublishedPublic(ctx context.Context, limit int) ([]*Vote, error) {
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if limit <= 0 {
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limit = 20
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}
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now := time.Now()
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var votes []*Vote
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err := db.WithContext(ctx).Model(&Vote{}).
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Where("status = ? AND visibility = ?", VoteStatusPublished, VoteVisibilityPublic).
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Where("(start_at IS NULL OR start_at <= ?)", now).
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Where("(end_at IS NULL OR end_at > ?)", now).
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Order("created_at DESC").
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Limit(limit).Find(&votes).Error
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if err != nil {
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return nil, errors.Wrap(err, "list published public votes")
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}
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return votes, nil
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}
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// GetHot 返回探索页"热门投票"：进行中的公开投票，按参与人数倒序。
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// 参与数通过子查询聚合（跨 MySQL/PostgreSQL 兼容，规避 GROUP BY 全列要求）。
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func (db *votes) GetHot(ctx context.Context, limit int) ([]*Vote, error) {
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if limit <= 0 {
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limit = 6
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}
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now := time.Now()
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sub := db.WithContext(ctx).Model(&VoteSubmission{}).
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Select("vote_id, COUNT(id) AS cnt").
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Where("deleted_at IS NULL").
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Group("vote_id")
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q := db.WithContext(ctx).Model(&Vote{}).
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Select("votes.*").
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Joins("LEFT JOIN (?) AS vote_stat ON vote_stat.vote_id = votes.id", sub).
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Where("votes.status = ? AND votes.visibility = ?", VoteStatusPublished, VoteVisibilityPublic).
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Where("(votes.start_at IS NULL OR votes.start_at <= ?)", now).
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Where("(votes.end_at IS NULL OR votes.end_at > ?)", now).
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Order("COALESCE(vote_stat.cnt, 0) DESC, votes.created_at DESC").
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Limit(limit)
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var votes []*Vote
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if err := q.Find(&votes).Error; err != nil {
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return nil, errors.Wrap(err, "get hot votes")
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}
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return votes, nil
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}
|
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type UpdateVoteOptions struct {
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Title string
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Description string
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Type *string
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Visibility string
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VoterScope string
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ShowResult string
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AllowCustom bool
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MaxChoices *int
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StartAt *time.Time
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EndAt *time.Time
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MaxVotesPerFingerprint int
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RequireCaptcha bool
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CensorMetadata datatypes.JSON
|
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QuotaLimit int
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}
|
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|
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// Update 更新投票的可编辑字段（不含 Status，状态流转走 UpdateStatus）。
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func (db *votes) Update(ctx context.Context, id uint, opts UpdateVoteOptions) error {
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updates := map[string]interface{}{
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"title": opts.Title,
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"description": opts.Description,
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||
"visibility": opts.Visibility,
|
||
"voter_scope": opts.VoterScope,
|
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"show_result": opts.ShowResult,
|
||
"allow_custom": opts.AllowCustom,
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"start_at": opts.StartAt,
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"end_at": opts.EndAt,
|
||
"max_votes_per_fingerprint": opts.MaxVotesPerFingerprint,
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"require_captcha": opts.RequireCaptcha,
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"censor_metadata": opts.CensorMetadata,
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||
"quota_limit": opts.QuotaLimit,
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}
|
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// Type / MaxChoices 用指针承载：nil 表示「不修改」，db 层跳过写入，避免调用方漏传时
|
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// 被 map 更新写成零值（曾导致发布后编辑把 type 写成 "" 的同类 bug）。草稿阶段显式传 &值
|
||
// 以设置；已发布编辑传 nil 以保留原值。
|
||
if opts.Type != nil {
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||
updates["type"] = *opts.Type
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||
}
|
||
if opts.MaxChoices != nil {
|
||
updates["max_choices"] = *opts.MaxChoices
|
||
}
|
||
res := db.WithContext(ctx).Model(&Vote{}).Where("id = ?", id).Updates(updates)
|
||
if res.Error != nil {
|
||
return errors.Wrap(res.Error, "update vote")
|
||
}
|
||
if res.RowsAffected == 0 {
|
||
return ErrVoteNotExist
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// UpdateWithOptions 在单个事务里更新投票元信息 + 替换选项 + 替换表单字段。
|
||
// 仅在草稿状态调用（发布后选项/字段锁定，避免破坏历史数据归因）。
|
||
// 任一步失败整体回滚，避免「元信息已更新、字段只更新一部分」的不一致草稿。
|
||
func (db *votes) UpdateWithOptions(ctx context.Context, id uint, opts UpdateVoteOptions, optionContents []string, formFields []CreateVoteFormFieldOptions) error {
|
||
return db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
|
||
updates := map[string]interface{}{
|
||
"title": opts.Title,
|
||
"description": opts.Description,
|
||
"visibility": opts.Visibility,
|
||
"voter_scope": opts.VoterScope,
|
||
"show_result": opts.ShowResult,
|
||
"allow_custom": opts.AllowCustom,
|
||
"start_at": opts.StartAt,
|
||
"end_at": opts.EndAt,
|
||
"max_votes_per_fingerprint": opts.MaxVotesPerFingerprint,
|
||
"require_captcha": opts.RequireCaptcha,
|
||
"censor_metadata": opts.CensorMetadata,
|
||
"quota_limit": opts.QuotaLimit,
|
||
}
|
||
if opts.Type != nil {
|
||
updates["type"] = *opts.Type
|
||
}
|
||
if opts.MaxChoices != nil {
|
||
updates["max_choices"] = *opts.MaxChoices
|
||
}
|
||
res := tx.Model(&Vote{}).Where("id = ?", id).Updates(updates)
|
||
if res.Error != nil {
|
||
return errors.Wrap(res.Error, "update vote")
|
||
}
|
||
if res.RowsAffected == 0 {
|
||
return ErrVoteNotExist
|
||
}
|
||
|
||
// 替换选项（先删后建）
|
||
if err := tx.Where("vote_id = ?", id).Delete(&VoteOption{}).Error; err != nil {
|
||
return errors.Wrap(err, "delete old vote options")
|
||
}
|
||
if len(optionContents) > 0 {
|
||
options := make([]*VoteOption, 0, len(optionContents))
|
||
for i, content := range optionContents {
|
||
options = append(options, &VoteOption{VoteID: id, Content: content, SortOrder: i})
|
||
}
|
||
if err := tx.Create(&options).Error; err != nil {
|
||
return errors.Wrap(err, "create vote options")
|
||
}
|
||
}
|
||
|
||
// 替换表单字段（先删后建）
|
||
if err := tx.Where("vote_id = ?", id).Delete(&VoteFormField{}).Error; err != nil {
|
||
return errors.Wrap(err, "delete old vote form fields")
|
||
}
|
||
if len(formFields) > 0 {
|
||
fields := make([]*VoteFormField, 0, len(formFields))
|
||
for _, f := range formFields {
|
||
fields = append(fields, &VoteFormField{
|
||
VoteID: id,
|
||
FieldType: f.FieldType,
|
||
Label: f.Label,
|
||
Required: f.Required,
|
||
MaxLength: f.MaxLength,
|
||
Options: f.Options,
|
||
SortOrder: f.SortOrder,
|
||
AllowCustom: f.AllowCustom,
|
||
})
|
||
}
|
||
if err := tx.Create(&fields).Error; err != nil {
|
||
return errors.Wrap(err, "create vote form fields")
|
||
}
|
||
}
|
||
return nil
|
||
})
|
||
}
|
||
|
||
// UpdateStatus 更新投票状态（draft → published → ended → archived）。
|
||
func (db *votes) UpdateStatus(ctx context.Context, id uint, status string) error {
|
||
res := db.WithContext(ctx).Model(&Vote{}).Where("id = ?", id).Update("status", status)
|
||
if res.Error != nil {
|
||
return errors.Wrap(res.Error, "update vote status")
|
||
}
|
||
if res.RowsAffected == 0 {
|
||
return ErrVoteNotExist
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func (db *votes) DeleteByID(ctx context.Context, id uint) error {
|
||
var vote Vote
|
||
if err := db.WithContext(ctx).First(&vote, id).Error; err != nil {
|
||
if errors.Is(err, gorm.ErrRecordNotFound) {
|
||
return ErrVoteNotExist
|
||
}
|
||
return errors.Wrap(err, "get vote by ID")
|
||
}
|
||
if err := db.WithContext(ctx).Delete(&Vote{}, id).Error; err != nil {
|
||
return errors.Wrap(err, "delete vote")
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// DeleteWithCascade 删除投票及其全部关联数据（选项、表单字段、提交记录）。
|
||
//
|
||
// 为什么必须是一个事务：原来 handler 里是 4 次独立写入，前 3 次失败只打 Warn，
|
||
// 于是可能留下「选项没了但票数还在」（结果页统计全 0 而提交记录占着库）、
|
||
// 「投票没了但提交记录成孤儿」这类无法通过界面修复的状态 —— 箱主只能重试删除，
|
||
// 而重试时 vote 已不存在，直接报 not exist，脏数据永远留着。
|
||
//
|
||
// 为什么是 Unscoped（真删）而不是软删：
|
||
// 1. 用户点「删除」的预期就是删掉，不是「我还能看到但数据库里还在」；
|
||
// 2. 提交记录里有参与者填写的文本、voter_ip、voter_token —— 软删等于把这些
|
||
// 个人数据永久留在库里，而界面上已经看不到了，等于删了但没删干净；
|
||
// 3. 软删还会占住 link_token 唯一索引，删过的链接永远无法复用。
|
||
func (db *votes) DeleteWithCascade(ctx context.Context, id uint) error {
|
||
return db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
|
||
var vote Vote
|
||
if err := tx.First(&vote, id).Error; err != nil {
|
||
if errors.Is(err, gorm.ErrRecordNotFound) {
|
||
return ErrVoteNotExist
|
||
}
|
||
return errors.Wrap(err, "get vote by ID")
|
||
}
|
||
|
||
// 顺序：先清子表再删主表。没有外键约束（项目不用 FK），
|
||
// 所以顺序只影响可读性；真正的保证来自事务本身。
|
||
if err := tx.Unscoped().Where("vote_id = ?", id).Delete(&VoteSubmission{}).Error; err != nil {
|
||
return errors.Wrap(err, "delete vote submissions")
|
||
}
|
||
if err := tx.Unscoped().Where("vote_id = ?", id).Delete(&VoteOption{}).Error; err != nil {
|
||
return errors.Wrap(err, "delete vote options")
|
||
}
|
||
if err := tx.Unscoped().Where("vote_id = ?", id).Delete(&VoteFormField{}).Error; err != nil {
|
||
return errors.Wrap(err, "delete vote form fields")
|
||
}
|
||
if err := tx.Unscoped().Delete(&Vote{}, id).Error; err != nil {
|
||
return errors.Wrap(err, "delete vote")
|
||
}
|
||
|
||
// 注意：这里**不**回退 quota_count。投票的定量收集口径是「累计收到的票数」
|
||
// （见 route/vote/vote.go 中提交成功后 +1），不是「创建了几个投票」——
|
||
// 删掉一个投票并不意味着那些票没发生过。箱主要腾额度靠界面上的「重置计数」。
|
||
return nil
|
||
})
|
||
}
|
||
|
||
// CountByUserID 统计箱主的投票总数（全部状态）。
|
||
func (db *votes) CountByUserID(ctx context.Context, userID uint) (int64, error) {
|
||
var count int64
|
||
if err := db.WithContext(ctx).Model(&Vote{}).Where("user_id = ?", userID).Count(&count).Error; err != nil {
|
||
return 0, errors.Wrap(err, "count votes by user id")
|
||
}
|
||
return count, nil
|
||
}
|
||
|
||
// cursorValueToString 将游标值转为字符串，兼容传入 uint / string。
|
||
func cursorValueToString(v interface{}) string {
|
||
if s, ok := v.(string); ok {
|
||
return s
|
||
}
|
||
return fmt.Sprintf("%v", v)
|
||
}
|