121 lines
4.3 KiB
Go
121 lines
4.3 KiB
Go
// Package groupcalls 实现超级群语音聊天（group call）的信令业务层：
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// ID/access_hash 分配与 store 编排。权限（admin/成员资格）由 rpc 层校验，
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// version 单调性与并发串行化由 store 层事务保证。
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package groupcalls
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import (
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"context"
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"crypto/rand"
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"encoding/binary"
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"fmt"
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"telesrv/internal/domain"
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"telesrv/internal/store"
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)
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// Service 是群通话业务服务。
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type Service struct {
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store store.GroupCallStore
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}
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// NewService 创建群通话服务。
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func NewService(st store.GroupCallStore) *Service {
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return &Service{store: st}
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}
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// Create 分配 id/access_hash 并建会。
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func (s *Service) Create(ctx context.Context, channelID, creatorUserID int64, title string, now int) (domain.GroupCall, error) {
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id, err := randomPositiveInt64()
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if err != nil {
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return domain.GroupCall{}, err
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}
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accessHash, err := randomPositiveInt64()
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if err != nil {
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return domain.GroupCall{}, err
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}
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return s.store.CreateGroupCall(ctx, domain.GroupCall{
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ID: id,
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AccessHash: accessHash,
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ChannelID: channelID,
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CreatorUserID: creatorUserID,
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Title: title,
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Version: 1,
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CreatedAt: now,
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})
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}
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func (s *Service) Get(ctx context.Context, callID int64) (domain.GroupCall, bool, error) {
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return s.store.GetGroupCall(ctx, callID)
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}
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func (s *Service) Join(ctx context.Context, req domain.JoinGroupCallRequest) (domain.GroupCallMutation, error) {
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return s.store.JoinGroupCall(ctx, req)
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}
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func (s *Service) Leave(ctx context.Context, callID, userID int64, now int) (domain.GroupCallMutation, error) {
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return s.store.LeaveGroupCall(ctx, callID, userID, now)
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}
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func (s *Service) Discard(ctx context.Context, callID int64, now int) (domain.GroupCall, []domain.GroupCallParticipant, error) {
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return s.store.DiscardGroupCall(ctx, callID, now)
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}
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func (s *Service) Touch(ctx context.Context, callID, userID int64, now int) ([]int64, bool, error) {
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return s.store.TouchParticipant(ctx, callID, userID, now)
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}
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func (s *Service) Participant(ctx context.Context, callID, userID int64) (domain.GroupCallParticipant, bool, error) {
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return s.store.GetParticipant(ctx, callID, userID)
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}
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func (s *Service) Participants(ctx context.Context, callID int64, offset string, limit int) (domain.GroupCallParticipantPage, error) {
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return s.store.ListParticipants(ctx, callID, offset, limit)
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}
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func (s *Service) UpdateParticipant(ctx context.Context, callID, userID int64, update domain.GroupCallParticipantUpdate) (domain.GroupCallMutation, bool, error) {
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return s.store.UpdateParticipant(ctx, callID, userID, update)
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}
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func (s *Service) SetTitle(ctx context.Context, callID int64, title string) (domain.GroupCall, bool, error) {
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return s.store.SetGroupCallTitle(ctx, callID, title)
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}
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func (s *Service) SetJoinMuted(ctx context.Context, callID int64, joinMuted bool) (domain.GroupCall, bool, error) {
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return s.store.SetGroupCallJoinMuted(ctx, callID, joinMuted)
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}
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func (s *Service) SetStartedMessageID(ctx context.Context, callID int64, msgID int) error {
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return s.store.SetStartedMessageID(ctx, callID, msgID)
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}
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func (s *Service) SweepStale(ctx context.Context, checkOlderThan, now, limit int) ([]domain.GroupCallMutation, error) {
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return s.store.SweepStaleParticipants(ctx, checkOlderThan, now, limit)
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}
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func (s *Service) ResetAllParticipants(ctx context.Context, now int) ([]domain.GroupCall, error) {
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return s.store.ResetAllParticipants(ctx, now)
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}
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func (s *Service) NextRaiseHandRating(ctx context.Context, callID int64) (int64, error) {
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return s.store.NextRaiseHandRating(ctx, callID)
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}
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func (s *Service) SetParticipantOverride(ctx context.Context, callID, setterUserID, targetUserID int64, override domain.GroupCallParticipantOverride, clear bool) error {
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return s.store.SetParticipantOverride(ctx, callID, setterUserID, targetUserID, override, clear)
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}
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func (s *Service) ParticipantOverride(ctx context.Context, callID, setterUserID, targetUserID int64) (domain.GroupCallParticipantOverride, bool, error) {
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return s.store.GetParticipantOverride(ctx, callID, setterUserID, targetUserID)
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}
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func randomPositiveInt64() (int64, error) {
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var buf [8]byte
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if _, err := rand.Read(buf[:]); err != nil {
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return 0, fmt.Errorf("groupcalls: random id: %w", err)
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}
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v := int64(binary.BigEndian.Uint64(buf[:]) >> 1)
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if v == 0 {
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v = 1
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}
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return v, nil
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}
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