0c99ae0a9d
Sync telesrv bd15657 (feat(account): implement collectible emoji status). Skipped telesrv docs changes per public sync rules.
700 lines
21 KiB
Go
700 lines
21 KiB
Go
package users
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import (
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"context"
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"errors"
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"strings"
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"time"
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"unicode/utf8"
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"telesrv/internal/app/userprojection"
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"telesrv/internal/domain"
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"telesrv/internal/store"
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)
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// ErrNotAuthorized 表示当前 auth_key 尚未登录。
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var ErrNotAuthorized = errors.New("not authorized")
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// ProfilePhotoProvider 批量返回用户当前头像（用于把 PhotoID/DCID/Stripped 富化到 domain.User）。
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type ProfilePhotoProvider = userprojection.ProfilePhotoProvider
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// Service 提供用户查询。
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type Service struct {
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users store.UserStore
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cache store.UserCache
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contacts store.ContactStore
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photos ProfilePhotoProvider
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privacy userprojection.PrivacyEvaluator
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projector *userprojection.Projector
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}
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type usernameAvailabilityStore interface {
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CheckUsername(ctx context.Context, userID int64, username string) (bool, error)
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}
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// Option 调整用户服务可选依赖。
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type Option func(*Service)
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// WithPhotoProvider 注入头像富化能力（缺省则用户不带头像）。
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func WithPhotoProvider(p ProfilePhotoProvider) Option {
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return func(s *Service) { s.photos = p }
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}
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// WithBaseUserCache injects a viewer-independent user base cache.
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func WithBaseUserCache(c store.UserCache) Option {
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return func(s *Service) { s.cache = c }
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}
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// WithContactStore enables viewer-specific contact name/phone projection.
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func WithContactStore(c store.ContactStore) Option {
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return func(s *Service) { s.contacts = c }
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}
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// WithPrivacyEvaluator enables viewer-specific privacy projection.
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func WithPrivacyEvaluator(p userprojection.PrivacyEvaluator) Option {
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return func(s *Service) { s.privacy = p }
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}
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const (
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minUsernameLen = 5
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maxUsernameLen = 32
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maxProfileNameRunes = 64
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// bio 长度双档，对齐 appConfig about_length_limit_default=70 /
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// about_length_limit_premium=140；客户端按 self premium flag 选档，
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// 服务端档位必须 ≥ 客户端宣告档位。
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maxProfileAboutRunes = 70
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maxProfileAboutRunesPremium = 140
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maxBatchUsers = 1000
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)
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// NewService 创建用户服务。
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func NewService(users store.UserStore, opts ...Option) *Service {
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s := &Service{users: users}
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for _, opt := range opts {
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opt(s)
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}
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s.projector = userprojection.New(
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userprojection.WithContactStore(s.contacts),
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userprojection.WithPhotoProvider(s.photos),
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userprojection.WithPrivacyEvaluator(s.privacy),
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)
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return s
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}
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// loadSelf 加载当前用户但不富化头像（供内部校验路径使用，避免无谓的头像查询）。
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func (s *Service) loadSelf(ctx context.Context, userID int64) (domain.User, error) {
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if userID == 0 {
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return domain.User{}, ErrNotAuthorized
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}
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u, found, err := s.loadBaseUserByID(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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if !found {
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return domain.User{}, ErrNotAuthorized
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}
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return u, nil
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}
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// Self 返回当前登录的用户（带头像）。未登录返回 ErrNotAuthorized。
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func (s *Service) Self(ctx context.Context, userID int64) (domain.User, error) {
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u, err := s.loadSelf(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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return s.projectOne(ctx, userID, u)
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}
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// ByID 返回指定用户。调用方必须已登录；access_hash 校验在 RPC 边界完成。
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func (s *Service) ByID(ctx context.Context, currentUserID, userID int64) (domain.User, bool, error) {
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if currentUserID == 0 {
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return domain.User{}, false, ErrNotAuthorized
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}
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u, found, err := s.loadBaseUserByID(ctx, userID)
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if err != nil {
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return domain.User{}, false, err
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}
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if !found {
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return u, false, nil
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}
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u, err = s.projectOne(ctx, currentUserID, u)
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if err != nil {
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return domain.User{}, false, err
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}
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return u, true, nil
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}
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// AdminUser 返回 viewer 无关的账号基础事实，供管理用例做 dry-run 与审计。
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func (s *Service) AdminUser(ctx context.Context, userID int64) (domain.User, bool, error) {
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if userID == 0 {
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return domain.User{}, false, nil
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}
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return s.loadBaseUserByID(ctx, userID)
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}
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// ByIDs 批量返回指定用户。调用方必须已登录；缺失用户不会出现在结果中。
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func (s *Service) ByIDs(ctx context.Context, currentUserID int64, userIDs []int64) ([]domain.User, error) {
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if currentUserID == 0 {
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return nil, ErrNotAuthorized
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}
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if len(userIDs) == 0 {
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return nil, nil
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}
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ids := make([]int64, 0, len(userIDs))
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seen := make(map[int64]struct{}, len(userIDs))
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for _, id := range userIDs {
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if id == 0 {
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continue
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}
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if _, ok := seen[id]; ok {
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continue
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}
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seen[id] = struct{}{}
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ids = append(ids, id)
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if len(ids) >= maxBatchUsers {
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break
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}
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}
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users, err := s.loadBaseUsersByIDs(ctx, ids)
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if err != nil {
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return nil, err
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}
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return s.projectUsers(ctx, currentUserID, users)
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}
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// ByIDsForViewers 跨多个 viewer 批量投影同一组 user（fan-out 模板化）：base user 只加载一次，
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// 隐私/改名/头像投影经 userprojection.ForViewers 压成 O(owner) 查询。返回 map[viewerID][]User，
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// 每个切片与 ByIDs(viewer, ids) 字节等价——**唯一例外是 personal photo overlay**（ForViewers v1
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// 跳过，客户端下次 getChannelDifference/getHistory 自愈）。供 channel fan-out 预热每 viewer 投影，
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// 把 per-recipient 的 ByIDs(=ForViewer) 折叠成一次跨 viewer 投影。不做 ByIDs 的单 caller 鉴权
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// （viewer 是 fan-out 收件人集合，非 RPC 调用方）。
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func (s *Service) ByIDsForViewers(ctx context.Context, viewerUserIDs []int64, userIDs []int64) (map[int64][]domain.User, error) {
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if len(viewerUserIDs) == 0 || len(userIDs) == 0 {
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return map[int64][]domain.User{}, nil
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}
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ids := uniqueUserIDs(userIDs, maxBatchUsers)
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base, err := s.loadBaseUsersByIDs(ctx, ids)
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if err != nil {
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return nil, err
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}
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// projector 为 nil 时 ForViewers 返回各 viewer 的原始 base 副本（与 projectUsers 的 nil 分支一致）。
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return s.projector.ForViewers(ctx, viewerUserIDs, base)
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}
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// CheckUsername 校验当前用户是否可以占用 username。
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func (s *Service) CheckUsername(ctx context.Context, userID int64, username string) (bool, error) {
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self, err := s.loadSelf(ctx, userID)
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if err != nil {
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return false, err
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}
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username = normalizeUsername(username)
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if !validUsername(username) {
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return false, domain.ErrUsernameInvalid
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}
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return s.checkUsernameAvailable(ctx, self.ID, username)
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}
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func (s *Service) checkUsernameAvailable(ctx context.Context, selfID int64, username string) (bool, error) {
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if checker, ok := s.users.(usernameAvailabilityStore); ok {
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return checker.CheckUsername(ctx, selfID, username)
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}
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u, found, err := s.users.ByUsername(ctx, username)
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if err != nil {
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return false, err
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}
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return !found || u.ID == selfID, nil
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}
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// UpdateUsername 修改当前用户的主 username。空字符串表示删除 username。
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func (s *Service) UpdateUsername(ctx context.Context, userID int64, username string) (domain.User, error) {
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self, err := s.loadSelf(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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username = normalizeUsername(username)
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if username != "" {
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if !validUsername(username) {
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return domain.User{}, domain.ErrUsernameInvalid
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}
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ok, err := s.checkUsernameAvailable(ctx, self.ID, username)
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if err != nil {
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return domain.User{}, err
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}
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if !ok {
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return domain.User{}, domain.ErrUsernameOccupied
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}
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}
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if self.Username == username {
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return self, nil
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}
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u, err := s.users.UpdateUsername(ctx, self.ID, username)
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if err != nil {
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return domain.User{}, err
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}
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s.refreshCachedUsers(ctx, u)
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return u, nil
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}
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// UpdateProfile 修改当前用户的基础资料。未设置的字段保持原值。
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func (s *Service) UpdateProfile(ctx context.Context, userID int64, update domain.UserProfileUpdate) (domain.User, error) {
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self, err := s.loadSelf(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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firstName := self.FirstName
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lastName := self.LastName
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about := self.About
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if update.HasFirstName {
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firstName = strings.TrimSpace(update.FirstName)
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}
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if update.HasLastName {
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lastName = strings.TrimSpace(update.LastName)
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}
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if update.HasAbout {
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about = strings.TrimSpace(update.About)
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}
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if firstName == "" || utf8.RuneCountInString(firstName) > maxProfileNameRunes || utf8.RuneCountInString(lastName) > maxProfileNameRunes {
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return domain.User{}, domain.ErrFirstNameInvalid
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}
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aboutLimit := maxProfileAboutRunes
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if self.PremiumActiveAt(time.Now().Unix()) {
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aboutLimit = maxProfileAboutRunesPremium
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}
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if utf8.RuneCountInString(about) > aboutLimit {
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return domain.User{}, domain.ErrAboutTooLong
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}
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if firstName == self.FirstName && lastName == self.LastName && about == self.About {
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return self, nil
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}
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u, err := s.users.UpdateProfile(ctx, self.ID, firstName, lastName, about)
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if err != nil {
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return domain.User{}, err
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}
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s.refreshCachedUsers(ctx, u)
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return u, nil
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}
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// UpdateLastSeen records the latest visible account activity time.
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func (s *Service) UpdateLastSeen(ctx context.Context, userID int64, lastSeenAt int) error {
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if userID == 0 {
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return ErrNotAuthorized
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}
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if lastSeenAt <= 0 {
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return nil
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}
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if err := s.users.UpdateLastSeen(ctx, userID, lastSeenAt); err != nil {
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return err
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}
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s.dropCachedUsers(ctx, userID)
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return nil
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}
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// PremiumActive 报告用户当前是否有效会员。走基础用户缓存路径、不做 viewer
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// 投影，供限额双档判断（pin 上限、reaction 上限、bio 长度等）低成本调用。
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func (s *Service) PremiumActive(ctx context.Context, userID int64) bool {
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if s == nil || userID == 0 {
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return false
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}
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u, found, err := s.loadBaseUserByID(ctx, userID)
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if err != nil || !found {
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return false
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}
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return u.PremiumActiveAt(time.Now().Unix())
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}
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// GrantPremium 授予/续期会员：未过期则在现有到期时间上累加 months 个月，
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// 已过期或首次则从当前时刻起算（对齐官方续期语义）。months<=0 清除会员。
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// bot 永不可成为会员。
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func (s *Service) GrantPremium(ctx context.Context, userID int64, months int) (domain.User, error) {
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if userID == 0 {
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return domain.User{}, ErrNotAuthorized
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}
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u, found, err := s.users.ByID(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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if !found {
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return domain.User{}, domain.ErrUserNotFound
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}
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if u.Bot {
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return domain.User{}, domain.ErrPremiumBotUnsupported
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}
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until := 0
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if months > 0 {
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now := time.Now()
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base := now
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if u.PremiumUntil > 0 && int64(u.PremiumUntil) > now.Unix() {
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base = time.Unix(int64(u.PremiumUntil), 0)
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}
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until = int(base.AddDate(0, months, 0).Unix())
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}
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updated, err := s.users.SetPremiumUntil(ctx, userID, until)
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if err != nil {
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return domain.User{}, err
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}
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s.refreshCachedUsers(ctx, updated)
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return updated, nil
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}
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// SetVerified 设置/取消用户认证标记。认证是账号基础事实，所有 user 投影统一消费该字段。
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func (s *Service) SetVerified(ctx context.Context, userID int64, verified bool) (domain.User, error) {
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if userID == 0 {
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return domain.User{}, ErrNotAuthorized
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}
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u, found, err := s.users.ByID(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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if !found {
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return domain.User{}, domain.ErrUserNotFound
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}
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if u.Verified == verified {
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return u, nil
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}
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updated, err := s.users.SetVerified(ctx, userID, verified)
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if err != nil {
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return domain.User{}, err
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}
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s.refreshCachedUsers(ctx, updated)
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return updated, nil
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}
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// SweepExpiredPremium 清理到期会员（store 把过期行清 NULL）并失效用户缓存，
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// 返回清理后的用户，供 RPC 层向本人在线 session 推 updateUser。premium 下发
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// 正确性由读取路径即时派生保证，这里只做收尾与通知。
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func (s *Service) SweepExpiredPremium(ctx context.Context, now int64, limit int) ([]domain.User, error) {
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users, err := s.users.SweepExpiredPremium(ctx, now, limit)
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if err != nil || len(users) == 0 {
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return users, err
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}
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ids := make([]int64, 0, len(users))
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for _, u := range users {
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ids = append(ids, u.ID)
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}
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s.dropCachedUsers(ctx, ids...)
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return users, nil
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}
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// UpdateEmojiStatus 更新当前用户 emoji status（premium 专属；零值清除）。
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// 清除不要求会员（到期降级后客户端仍可显式清掉残留状态）。
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func (s *Service) UpdateEmojiStatus(ctx context.Context, userID int64, status domain.UserEmojiStatus) (domain.User, error) {
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self, err := s.validateEmojiStatusUpdate(ctx, userID, status)
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if err != nil {
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return domain.User{}, err
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}
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u, err := s.users.UpdateEmojiStatus(ctx, self.ID, status)
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if err != nil {
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return domain.User{}, err
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}
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s.refreshCachedUsers(ctx, u)
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return u, nil
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}
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// UpdateEmojiStatusWithEvent uses the store's aggregate transaction when it
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// is available. The bool reports whether the returned event was durably
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// appended with dispatch; lightweight memory/test wiring falls back to the
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// ordinary state write and lets the RPC's Updates service append the event.
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func (s *Service) UpdateEmojiStatusWithEvent(ctx context.Context, userID int64, status domain.UserEmojiStatus, date int, excludeAuthKeyID [8]byte, excludeSessionID int64) (domain.User, domain.UpdateEvent, bool, error) {
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self, err := s.validateEmojiStatusUpdate(ctx, userID, status)
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if err != nil {
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return domain.User{}, domain.UpdateEvent{}, false, err
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}
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writer, ok := s.users.(store.UserEmojiStatusEventStore)
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if !ok {
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u, err := s.users.UpdateEmojiStatus(ctx, self.ID, status)
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if err == nil {
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s.refreshCachedUsers(ctx, u)
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}
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return u, domain.UpdateEvent{}, false, err
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}
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event := domain.UpdateEvent{
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Type: domain.UpdateEventUserEmojiStatus,
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Peer: domain.Peer{Type: domain.PeerTypeUser, ID: self.ID},
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EmojiStatus: status,
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Date: date,
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PtsCount: 1,
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}
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u, event, err := writer.UpdateEmojiStatusWithEvent(ctx, self.ID, status, event, excludeAuthKeyID, excludeSessionID)
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if err != nil {
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return domain.User{}, domain.UpdateEvent{}, false, err
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}
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s.refreshCachedUsers(ctx, u)
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return u, event, true, nil
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}
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func (s *Service) validateEmojiStatusUpdate(ctx context.Context, userID int64, status domain.UserEmojiStatus) (domain.User, error) {
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self, err := s.loadSelf(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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if !status.Valid() {
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return domain.User{}, domain.ErrStarGiftCollectibleInvalid
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}
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if !status.Empty() && !self.PremiumActiveAt(time.Now().Unix()) {
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return domain.User{}, domain.ErrPremiumRequired
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}
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return self, nil
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}
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// UpdateBirthday 设置/清除用户生日（account.updateBirthday）。零值 Birthday 表示清除。
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func (s *Service) UpdateBirthday(ctx context.Context, userID int64, birthday domain.Birthday) (domain.User, error) {
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self, err := s.loadSelf(ctx, userID)
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if err != nil {
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return domain.User{}, err
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}
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if birthday.IsSet() {
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if !domain.ValidBirthday(birthday) {
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return domain.User{}, domain.ErrBirthdayInvalid
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}
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} else {
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birthday = domain.Birthday{} // 归一化为清除
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}
|
||
u, err := s.users.UpdateBirthday(ctx, self.ID, birthday)
|
||
if err != nil {
|
||
return domain.User{}, err
|
||
}
|
||
s.refreshCachedUsers(ctx, u)
|
||
return u, nil
|
||
}
|
||
|
||
// UpdatePersonalChannel 设置/清除资料页个人频道（account.updatePersonalChannel）；
|
||
// channelID=0 表示清除。频道存在性与「调用者是其成员」由 RPC 层在调用前校验。
|
||
func (s *Service) UpdatePersonalChannel(ctx context.Context, userID int64, channelID int64) (domain.User, error) {
|
||
self, err := s.loadSelf(ctx, userID)
|
||
if err != nil {
|
||
return domain.User{}, err
|
||
}
|
||
u, err := s.users.UpdatePersonalChannel(ctx, self.ID, channelID)
|
||
if err != nil {
|
||
return domain.User{}, err
|
||
}
|
||
s.refreshCachedUsers(ctx, u)
|
||
return u, nil
|
||
}
|
||
|
||
// UpdateColor updates the user's message accent or profile background color.
|
||
func (s *Service) UpdateColor(ctx context.Context, userID int64, forProfile bool, color domain.PeerColor) (domain.User, error) {
|
||
self, err := s.loadSelf(ctx, userID)
|
||
if err != nil {
|
||
return domain.User{}, err
|
||
}
|
||
u, err := s.users.UpdateColor(ctx, self.ID, forProfile, color)
|
||
if err != nil {
|
||
return domain.User{}, err
|
||
}
|
||
s.refreshCachedUsers(ctx, u)
|
||
return u, nil
|
||
}
|
||
|
||
// ResolveUsername 解析 username 到用户；调用方必须已登录。
|
||
func (s *Service) ResolveUsername(ctx context.Context, currentUserID int64, username string) (domain.User, bool, error) {
|
||
if _, err := s.loadSelf(ctx, currentUserID); err != nil {
|
||
return domain.User{}, false, err
|
||
}
|
||
username = normalizeUsername(username)
|
||
if !validUsername(username) {
|
||
return domain.User{}, false, domain.ErrUsernameInvalid
|
||
}
|
||
u, found, err := s.users.ByUsername(ctx, username)
|
||
if err != nil || !found {
|
||
return u, found, err
|
||
}
|
||
s.putCachedUsers(ctx, u)
|
||
u, err = s.projectOne(ctx, currentUserID, u)
|
||
if err != nil {
|
||
return domain.User{}, false, err
|
||
}
|
||
return u, true, nil
|
||
}
|
||
|
||
// ResolvePhone 解析手机号到用户；当前阶段默认允许手机号深链解析，隐私规则后续接 account privacy。
|
||
func (s *Service) ResolvePhone(ctx context.Context, currentUserID int64, phone string) (domain.User, bool, error) {
|
||
if _, err := s.loadSelf(ctx, currentUserID); err != nil {
|
||
return domain.User{}, false, err
|
||
}
|
||
phone = normalizePhone(phone)
|
||
if phone == "" {
|
||
return domain.User{}, false, domain.ErrPhoneNotOccupied
|
||
}
|
||
u, found, err := s.users.ByPhone(ctx, phone)
|
||
if err != nil || !found {
|
||
return u, found, err
|
||
}
|
||
s.putCachedUsers(ctx, u)
|
||
u, err = s.projectOne(ctx, currentUserID, u)
|
||
if err != nil {
|
||
return domain.User{}, false, err
|
||
}
|
||
return u, true, nil
|
||
}
|
||
|
||
func (s *Service) projectUsers(ctx context.Context, viewerUserID int64, users []domain.User) ([]domain.User, error) {
|
||
if s == nil || s.projector == nil {
|
||
return users, nil
|
||
}
|
||
return s.projector.ForViewer(ctx, viewerUserID, users)
|
||
}
|
||
|
||
func (s *Service) loadBaseUserByID(ctx context.Context, userID int64) (domain.User, bool, error) {
|
||
users, err := s.loadBaseUsersByIDs(ctx, []int64{userID})
|
||
if err != nil {
|
||
return domain.User{}, false, err
|
||
}
|
||
if len(users) == 0 {
|
||
return domain.User{}, false, nil
|
||
}
|
||
return users[0], true, nil
|
||
}
|
||
|
||
func (s *Service) loadBaseUsersByIDs(ctx context.Context, userIDs []int64) ([]domain.User, error) {
|
||
ids := uniqueUserIDs(userIDs, maxBatchUsers)
|
||
if len(ids) == 0 {
|
||
return nil, nil
|
||
}
|
||
loaded := make(map[int64]domain.User, len(ids))
|
||
misses := append([]int64(nil), ids...)
|
||
if s.cache != nil {
|
||
if cached, err := s.cache.GetByIDs(ctx, ids); err == nil && len(cached) > 0 {
|
||
for id, u := range cached {
|
||
if u.ID != 0 && u.EmojiStatusCollectible.Empty() {
|
||
loaded[id] = u
|
||
}
|
||
}
|
||
misses = make([]int64, 0, len(ids))
|
||
for _, id := range ids {
|
||
if _, ok := loaded[id]; !ok {
|
||
misses = append(misses, id)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
if len(misses) > 0 {
|
||
users, err := s.users.ByIDs(ctx, misses)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
for _, u := range users {
|
||
if u.ID != 0 {
|
||
loaded[u.ID] = u
|
||
}
|
||
}
|
||
s.putCachedUsers(ctx, users...)
|
||
}
|
||
out := make([]domain.User, 0, len(ids))
|
||
for _, id := range ids {
|
||
if u, ok := loaded[id]; ok {
|
||
out = append(out, u)
|
||
}
|
||
}
|
||
return out, nil
|
||
}
|
||
|
||
func (s *Service) refreshCachedUsers(ctx context.Context, users ...domain.User) {
|
||
ids := make([]int64, 0, len(users))
|
||
for _, u := range users {
|
||
if u.ID != 0 {
|
||
ids = append(ids, u.ID)
|
||
}
|
||
}
|
||
s.dropCachedUsers(ctx, ids...)
|
||
s.putCachedUsers(ctx, users...)
|
||
}
|
||
|
||
func (s *Service) putCachedUsers(ctx context.Context, users ...domain.User) {
|
||
if s.cache == nil || len(users) == 0 {
|
||
return
|
||
}
|
||
cacheable := make([]domain.User, 0, len(users))
|
||
for _, user := range users {
|
||
// Collectible ownership may change inside the star-gift aggregate. Keep
|
||
// these uncommon users on the authoritative store path so the database
|
||
// lifecycle trigger can never be masked by a stale base-user cache entry.
|
||
if user.ID != 0 && user.EmojiStatusCollectible.Empty() {
|
||
cacheable = append(cacheable, user)
|
||
}
|
||
}
|
||
if len(cacheable) > 0 {
|
||
_ = s.cache.PutMany(ctx, cacheable)
|
||
}
|
||
}
|
||
|
||
func (s *Service) dropCachedUsers(ctx context.Context, userIDs ...int64) {
|
||
if s.cache == nil || len(userIDs) == 0 {
|
||
return
|
||
}
|
||
_ = s.cache.Delete(ctx, userIDs)
|
||
}
|
||
|
||
func uniqueUserIDs(ids []int64, limit int) []int64 {
|
||
if len(ids) == 0 {
|
||
return nil
|
||
}
|
||
out := make([]int64, 0, len(ids))
|
||
seen := make(map[int64]struct{}, len(ids))
|
||
for _, id := range ids {
|
||
if id == 0 {
|
||
continue
|
||
}
|
||
if _, ok := seen[id]; ok {
|
||
continue
|
||
}
|
||
seen[id] = struct{}{}
|
||
out = append(out, id)
|
||
if limit > 0 && len(out) >= limit {
|
||
break
|
||
}
|
||
}
|
||
return out
|
||
}
|
||
|
||
func (s *Service) projectOne(ctx context.Context, viewerUserID int64, user domain.User) (domain.User, error) {
|
||
if s == nil || s.projector == nil {
|
||
return user, nil
|
||
}
|
||
return s.projector.One(ctx, viewerUserID, user)
|
||
}
|
||
|
||
func normalizeUsername(username string) string {
|
||
username = strings.TrimSpace(username)
|
||
username = strings.TrimPrefix(username, "@")
|
||
return strings.TrimSpace(username)
|
||
}
|
||
|
||
func validUsername(username string) bool {
|
||
if len(username) < minUsernameLen || len(username) > maxUsernameLen {
|
||
return false
|
||
}
|
||
for i := 0; i < len(username); i++ {
|
||
c := username[i]
|
||
switch {
|
||
case c >= 'a' && c <= 'z':
|
||
case c >= 'A' && c <= 'Z':
|
||
case c >= '0' && c <= '9':
|
||
if i == 0 {
|
||
return false
|
||
}
|
||
case c == '_':
|
||
if i == 0 {
|
||
return false
|
||
}
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
return true
|
||
}
|
||
|
||
func normalizePhone(phone string) string {
|
||
phone = strings.TrimSpace(phone)
|
||
if phone == "" {
|
||
return ""
|
||
}
|
||
var b strings.Builder
|
||
b.Grow(len(phone))
|
||
for _, r := range phone {
|
||
if r >= '0' && r <= '9' {
|
||
b.WriteRune(r)
|
||
}
|
||
}
|
||
return b.String()
|
||
}
|