62 lines
2.0 KiB
Go
62 lines
2.0 KiB
Go
package service
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import (
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"context"
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roomv1 "hyapp.local/api/proto/room/v1"
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"hyapp/pkg/appcode"
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"hyapp/pkg/roomid"
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"hyapp/pkg/xerr"
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"hyapp/services/room-service/internal/room/state"
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)
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// GetRoomSnapshot 返回房间页主动同步所需的完整 Room Cell 快照。
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// 该查询只读，不刷新 presence、不写 command log，也不隐式 JoinRoom。
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func (s *Service) GetRoomSnapshot(ctx context.Context, req *roomv1.GetRoomSnapshotRequest) (*roomv1.GetRoomSnapshotResponse, error) {
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ctx = appcode.WithContext(ctx, req.GetMeta().GetAppCode())
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roomID := req.GetRoomId()
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viewerUserID := req.GetViewerUserId()
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if !roomid.ValidStringID(roomID) {
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// 快照查询同样受腾讯 IM GroupID 和 RTC strRoomId 格式约束，避免脏 room_id 进入恢复路径。
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return nil, xerr.New(xerr.InvalidArgument, "room_id is invalid")
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}
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if viewerUserID <= 0 {
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// viewer_user_id 必须来自 gateway 鉴权，room-service 不接受匿名读取完整 presence。
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return nil, xerr.New(xerr.InvalidArgument, "viewer_user_id is required")
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}
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closed, err := s.isRoomClosed(ctx, roomID)
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if err != nil {
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return nil, err
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}
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if closed {
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return nil, xerr.New(xerr.RoomClosed, "room closed")
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}
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snapshot, err := s.currentSnapshot(ctx, roomID)
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if err != nil {
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return nil, err
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}
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if snapshot == nil || snapshot.GetRoomId() == "" {
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return nil, xerr.New(xerr.NotFound, "room not found")
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}
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if snapshot.GetStatus() != state.RoomStatusActive {
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return nil, xerr.New(xerr.RoomClosed, "room closed")
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}
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if snapshotUserBanned(snapshot, viewerUserID, s.clock.Now().UnixMilli()) || findProtoUser(snapshot, viewerUserID) == nil {
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// 完整快照包含在线用户、麦位和房管集合，必须要求 viewer 仍在业务 presence 内。
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return nil, xerr.New(xerr.PermissionDenied, "viewer is not in room")
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}
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followed, err := s.repository.IsRoomFollowed(ctx, viewerUserID, roomID)
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if err != nil {
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return nil, err
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}
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return &roomv1.GetRoomSnapshotResponse{
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Room: snapshot,
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ServerTimeMs: s.clock.Now().UnixMilli(),
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IsFollowed: followed,
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}, nil
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}
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