feat: support GetLastMessage

internal/msggateway/client.go

@@ -242,6 +242,8 @@ func (c *Client) handleMessage(message []byte) error {
 		resp, messageErr = c.setAppBackgroundStatus(ctx, binaryReq)
 	case WsSubUserOnlineStatus:
 		resp, messageErr = c.longConnServer.SubUserOnlineStatus(ctx, c, binaryReq)
+	case WsPullConvLastMessage:
+		resp, messageErr = c.longConnServer.GetLastMessage(ctx, binaryReq)
 	default:
 		return fmt.Errorf(
 			"ReqIdentifier failed,sendID:%s,msgIncr:%s,reqIdentifier:%d",

internal/msggateway/constant.go

@@ -52,6 +52,7 @@ const (
 	WsLogoutMsg           = 2003
 	WsSetBackgroundStatus = 2004
 	WsSubUserOnlineStatus = 2005
+	WsPullConvLastMessage = 2006
 	WSDataError           = 3001
 )
 

internal/msggateway/message_handler.go

@@ -108,6 +108,7 @@ type MessageHandler interface {
 	GetSeqMessage(ctx context.Context, data *Req) ([]byte, error)
 	UserLogout(ctx context.Context, data *Req) ([]byte, error)
 	SetUserDeviceBackground(ctx context.Context, data *Req) ([]byte, bool, error)
+	GetLastMessage(ctx context.Context, data *Req) ([]byte, error)
 }
 
 var _ MessageHandler = (*GrpcHandler)(nil)
@@ -266,3 +267,15 @@ func (g *GrpcHandler) SetUserDeviceBackground(ctx context.Context, data *Req) ([
 	}
 	return nil, req.IsBackground, nil
 }
+
+func (g *GrpcHandler) GetLastMessage(ctx context.Context, data *Req) ([]byte, error) {
+	var req msg.GetLastMessageReq
+	if err := proto.Unmarshal(data.Data, &req); err != nil {
+		return nil, err
+	}
+	resp, err := g.msgClient.GetLastMessage(ctx, &req)
+	if err != nil {
+		return nil, err
+	}
+	return proto.Marshal(resp)
+}

internal/rpc/msg/sync_msg.go

@@ -245,3 +245,11 @@ func (m *msgServer) SearchMessage(ctx context.Context, req *msg.SearchMessageReq
 func (m *msgServer) GetServerTime(ctx context.Context, _ *msg.GetServerTimeReq) (*msg.GetServerTimeResp, error) {
 	return &msg.GetServerTimeResp{ServerTime: timeutil.GetCurrentTimestampByMill()}, nil
 }
+
+func (m *msgServer) GetLastMessage(ctx context.Context, req *msg.GetLastMessageReq) (*msg.GetLastMessageResp, error) {
+	msgs, err := m.MsgDatabase.GetLastMessage(ctx, req.ConversationIDs, req.UserID)
+	if err != nil {
+		return nil, err
+	}
+	return &msg.GetLastMessageResp{Msgs: msgs}, nil
+}