MM-24692: Add a since parameter to getGroups api (#14444)

* add a since parameter to getGroups api

* update for lint error

* when using since, return deleted groups as well.

* update flaky test, groups have same create time

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

store/sqlstore/group_store.go

@@ -1144,9 +1144,16 @@ func (s *SqlGroupStore) GetGroups(page, perPage int, opts model.GroupSearchOpts)
 
 	groupsQuery = groupsQuery.
 		From("UserGroups g").
-		Where("g.DeleteAt = 0").
 		OrderBy("g.DisplayName")
 
+	if opts.Since > 0 {
+		groupsQuery = groupsQuery.Where(sq.Gt{
+			"g.UpdateAt": opts.Since,
+		})
+	} else {
+		groupsQuery = groupsQuery.Where("g.DeleteAt = 0")
+	}
+
 	if perPage != 0 {
 		groupsQuery = groupsQuery.
 			Limit(uint64(perPage)).

store/storetest/group_store.go

@@ -3010,6 +3010,8 @@ func testGetGroups(t *testing.T, ss store.Store) {
 	team1, err := ss.Team().Save(team1)
 	require.Nil(t, err)
 
+	startCreateTime := team1.UpdateAt - 1
+
 	// Create Channel1
 	channel1 := &model.Channel{
 		TeamId:      model.NewId(),
@@ -3148,10 +3150,12 @@ func testGetGroups(t *testing.T, ss store.Store) {
 	require.Nil(t, err)
 
 	user2.DeleteAt = 1
-	ss.User().Update(user2, true)
+	u2Update, _ := ss.User().Update(user2, true)
 
 	group2NameSubstring := "group-2"
 
+	endCreateTime := u2Update.New.UpdateAt + 1
+
 	testCases := []struct {
 		Name    string
 		Page    int
@@ -3309,6 +3313,32 @@ func testGetGroups(t *testing.T, ss store.Store) {
 				return true
 			},
 		},
+		{
+			Name:    "Use Since return all",
+			Opts:    model.GroupSearchOpts{FilterAllowReference: true, Since: startCreateTime},
+			Page:    0,
+			PerPage: 100,
+			Resultf: func(groups []*model.Group) bool {
+				if len(groups) == 0 {
+					return false
+				}
+				for _, g := range groups {
+					if g.DeleteAt != 0 {
+						return false
+					}
+				}
+				return true
+			},
+		},
+		{
+			Name:    "Use Since return none",
+			Opts:    model.GroupSearchOpts{FilterAllowReference: true, Since: endCreateTime},
+			Page:    0,
+			PerPage: 100,
+			Resultf: func(groups []*model.Group) bool {
+				return len(groups) == 0
+			},
+		},
 	}
 
 	for _, tc := range testCases {