feat: add im group mention flows

server/topic_test.go

@@ -761,6 +761,73 @@ func TestHandleBroadcastDataRejectsUserSystemType(t *testing.T) {
 	}
 }
 
+func TestHandleBroadcastDataRejectsMentionAllByMember(t *testing.T) {
+	numUsers := 2
+	helper := TopicTestHelper{}
+	helper.setUp(t, numUsers, types.TopicCatGrp, "grp-test", true)
+	defer helper.tearDown()
+	pud := helper.topic.perUser[helper.uids[0]]
+	pud.modeWant = types.ModeCPublic
+	pud.modeGiven = types.ModeCPublic
+	helper.topic.perUser[helper.uids[0]] = pud
+
+	from := helper.uids[0].UserId()
+	msg := &ClientComMessage{
+		Id:     "mention-all-1",
+		AsUser: from,
+		Pub: &MsgClientPub{
+			Topic:   "grp-test",
+			Head:    map[string]any{"mention_all": true},
+			Content: "hello all",
+		},
+		sess: helper.sessions[0],
+	}
+
+	helper.topic.handleClientMsg(msg)
+	helper.finish()
+
+	verifyResponseCodes(helper.results[0], []int{http.StatusForbidden}, t)
+	if helper.topic.lastID != 0 {
+		t.Fatalf("Topic.lastID: expected 0, got %d", helper.topic.lastID)
+	}
+}
+
+func TestHandleBroadcastDataFiltersInvalidMentions(t *testing.T) {
+	numUsers := 2
+	helper := TopicTestHelper{}
+	helper.setUp(t, numUsers, types.TopicCatGrp, "grp-test", true)
+	defer helper.tearDown()
+	helper.mm.EXPECT().Save(types.TenantID(1), gomock.Any(), gomock.Any(), gomock.Any()).
+		DoAndReturn(func(_ types.TenantID, msg *types.Message, _ []string, _ bool) (*types.MessageSaveResult, error) {
+			mentions, ok := msg.Head["mentions"].([]map[string]any)
+			if !ok || len(mentions) != 1 || mentions[0]["user_id"] != helper.uids[1].UserId() {
+				t.Fatalf("unexpected normalized mentions: %#v", msg.Head["mentions"])
+			}
+			return &types.MessageSaveResult{SeqId: 1, MarkedReadBySender: true}, nil
+		})
+
+	from := helper.uids[0].UserId()
+	msg := &ClientComMessage{
+		Id:     "mention-1",
+		AsUser: from,
+		Pub: &MsgClientPub{
+			Topic: "grp-test",
+			Head: map[string]any{"mentions": []any{
+				map[string]any{"user_id": helper.uids[1].UserId(), "offset": 0, "length": 2},
+				map[string]any{"user_id": types.Uid(99).UserId(), "offset": 3, "length": 2},
+			}},
+			Content: "hi",
+			NoEcho:  true,
+		},
+		sess: helper.sessions[0],
+	}
+
+	helper.topic.handleClientMsg(msg)
+	helper.finish()
+
+	verifyResponseCodes(helper.results[0], []int{http.StatusAccepted}, t)
+}
+
 func TestHandleBroadcastDataInactiveTopic(t *testing.T) {
 	numUsers := 2
 	helper := TopicTestHelper{}