get details working (and other cleanup) (#5116)

details wasn't properly listing backed up items. This fixes the details
display, and contains some code clean-up that occurred along the way.

src/cli/backup/teamschats.go

@@ -213,7 +213,6 @@ func runDetailsTeamsChatsCmd(cmd *cobra.Command) error {
 	opts := utils.MakeTeamsChatsOpts(cmd)
 
 	sel := utils.IncludeTeamsChatsRestoreDataSelectors(ctx, opts)
-	sel.Configure(selectors.Config{OnlyMatchItemNames: true})
 	utils.FilterTeamsChatsRestoreInfoSelectors(sel, opts)
 
 	ds, err := genericDetailsCommand(cmd, flags.BackupIDFV, sel.Selector)

src/cli/utils/teamschats.go

@@ -89,7 +89,10 @@ func IncludeTeamsChatsRestoreDataSelectors(ctx context.Context, opts TeamsChatsO
 		users = selectors.Any()
 	}
 
-	return selectors.NewTeamsChatsRestore(users)
+	sel := selectors.NewTeamsChatsRestore(users)
+	sel.Include(sel.Chats(selectors.Any()))
+
+	return sel
 }
 
 // FilterTeamsChatsRestoreInfoSelectors builds the common info-selector filters.

src/internal/m365/collection/teamschats/backup.go

@@ -115,11 +115,8 @@ func populateCollection[I chatsItemer](
 	)
 
 	ctx = clues.AddLabelCounter(ctx, cl.PlainAdder())
-	cc := api.CallConfig{
-		CanMakeDeltaQueries: false,
-	}
 
-	items, err := bh.getItemIDs(ctx, cc)
+	items, err := bh.getItemIDs(ctx)
 	if err != nil {
 		errs.AddRecoverable(ctx, clues.Stack(err))
 		return collection, clues.Stack(errs.Failure()).OrNil()

src/internal/m365/collection/teamschats/backup_test.go

@@ -49,14 +49,6 @@ type mockBackupHandler struct {
 	doNotInclude    bool
 }
 
-//lint:ignore U1000 false linter issue due to generics
-func (bh mockBackupHandler) augmentItemInfo(
-	*details.TeamsChatsInfo,
-	models.Chatable,
-) {
-	// no-op
-}
-
 func (bh mockBackupHandler) container() container[models.Chatable] {
 	return chatContainer()
 }
@@ -71,7 +63,6 @@ func (bh mockBackupHandler) getContainer(
 
 func (bh mockBackupHandler) getItemIDs(
 	_ context.Context,
-	_ api.CallConfig,
 ) ([]models.Chatable, error) {
 	return bh.chats, bh.chatsErr
 }

src/internal/m365/collection/teamschats/chat_handler.go

@@ -46,8 +46,11 @@ func (bh usersChatsBackupHandler) getContainer(
 //lint:ignore U1000 required for interface compliance
 func (bh usersChatsBackupHandler) getItemIDs(
 	ctx context.Context,
-	cc api.CallConfig,
 ) ([]models.Chatable, error) {
+	cc := api.CallConfig{
+		Expand: []string{"lastMessagePreview"},
+	}
+
 	return bh.ac.GetChats(
 		ctx,
 		bh.protectedResourceID,
@@ -89,26 +92,21 @@ func (bh usersChatsBackupHandler) getItem(
 
 	chatID := ptr.Val(chat.GetId())
 
-	cc := api.CallConfig{
+	msgs, err := bh.ac.GetChatMessages(ctx, chatID, api.CallConfig{})
-		Expand: []string{"lastMessagePreview"},
-	}
-
-	msgs, err := bh.ac.GetChatMessages(ctx, chatID, cc)
 	if err != nil {
 		return nil, nil, clues.Stack(err)
 	}
 
 	chat.SetMessages(msgs)
 
-	return chat, api.TeamsChatInfo(chat), nil
+	members, err := bh.ac.GetChatMembers(ctx, chatID, api.CallConfig{})
-}
+	if err != nil {
+		return nil, nil, clues.Stack(err)
+	}
 
-//lint:ignore U1000 false linter issue due to generics
+	chat.SetMembers(members)
-func (bh usersChatsBackupHandler) augmentItemInfo(
+
-	dgi *details.TeamsChatsInfo,
+	return chat, api.TeamsChatInfo(chat), nil
-	c models.Chatable,
-) {
-	// no-op
 }
 
 func chatContainer() container[models.Chatable] {

src/internal/m365/collection/teamschats/collection.go

@@ -66,7 +66,7 @@ func updateStatus(
 // or notMoved (if they match).
 func NewCollection[I chatsItemer](
 	baseCol data.BaseCollection,
-	getAndAugment getItemAndAugmentInfoer[I],
+	getter getItemer[I],
 	protectedResource string,
 	items []I,
 	contains container[I],
@@ -76,7 +76,7 @@ func NewCollection[I chatsItemer](
 		BaseCollection:    baseCol,
 		items:             items,
 		contains:          contains,
-		getAndAugment:     getAndAugment,
+		getter:            getter,
 		statusUpdater:     statusUpdater,
 		stream:            make(chan data.Item, collectionChannelBufferSize),
 		protectedResource: protectedResource,
@@ -96,7 +96,7 @@ type lazyFetchCollection[I chatsItemer] struct {
 
 	items []I
 
-	getAndAugment getItemAndAugmentInfoer[I]
+	getter getItemer[I]
 
 	statusUpdater support.StatusUpdater
 }
@@ -167,13 +167,13 @@ func (col *lazyFetchCollection[I]) streamItems(ctx context.Context, errs *fault.
 			col.stream <- data.NewLazyItemWithInfo(
 				ictx,
 				&lazyItemGetter[I]{
-					modTime:       modTime,
+					modTime:      modTime,
-					getAndAugment: col.getAndAugment,
+					getter:       col.getter,
-					resourceID:    col.protectedResource,
+					resourceID:   col.protectedResource,
-					item:          item,
+					item:         item,
-					containerIDs:  col.FullPath().Folders(),
+					containerIDs: col.FullPath().Folders(),
-					contains:      col.contains,
+					contains:     col.contains,
-					parentPath:    col.LocationPath().String(),
+					parentPath:   col.LocationPath().String(),
 				},
 				itemID,
 				modTime,
@@ -192,13 +192,13 @@ func (col *lazyFetchCollection[I]) streamItems(ctx context.Context, errs *fault.
 }
 
 type lazyItemGetter[I chatsItemer] struct {
-	getAndAugment getItemAndAugmentInfoer[I]
+	getter       getItemer[I]
-	resourceID    string
+	resourceID   string
-	item          I
+	item         I
-	parentPath    string
+	parentPath   string
-	containerIDs  path.Elements
+	containerIDs path.Elements
-	modTime       time.Time
+	modTime      time.Time
-	contains      container[I]
+	contains     container[I]
 }
 
 func (lig *lazyItemGetter[I]) GetData(
@@ -208,7 +208,7 @@ func (lig *lazyItemGetter[I]) GetData(
 	writer := kjson.NewJsonSerializationWriter()
 	defer writer.Close()
 
-	item, info, err := lig.getAndAugment.getItem(
+	item, info, err := lig.getter.getItem(
 		ctx,
 		lig.resourceID,
 		lig.item)
@@ -229,8 +229,6 @@ func (lig *lazyItemGetter[I]) GetData(
 		return nil, nil, false, err
 	}
 
-	lig.getAndAugment.augmentItemInfo(info, lig.contains.container)
-
 	if err := writer.WriteObjectValue("", item); err != nil {
 		err = clues.WrapWC(ctx, err, "writing item to serializer").Label(fault.LabelForceNoBackupCreation)
 		errs.AddRecoverable(ctx, err)

src/internal/m365/collection/teamschats/collection_test.go

@@ -163,11 +163,6 @@ func (m getAndAugmentChat) getItem(
 	return chat, &details.TeamsChatsInfo{}, m.err
 }
 
-//lint:ignore U1000 false linter issue due to generics
-func (getAndAugmentChat) augmentItemInfo(*details.TeamsChatsInfo, models.Chatable) {
-	// no-op
-}
-
 func (suite *CollectionUnitSuite) TestLazyFetchCollection_Items_LazyFetch() {
 	var (
 		t             = suite.T()
@@ -225,7 +220,7 @@ func (suite *CollectionUnitSuite) TestLazyFetchCollection_Items_LazyFetch() {
 					count.New()),
 				items:         test.items,
 				contains:      container[models.Chatable]{},
-				getAndAugment: getterAugmenter,
+				getter:        getterAugmenter,
 				stream:        make(chan data.Item),
 				statusUpdater: statusUpdater,
 			}
@@ -285,11 +280,11 @@ func (suite *CollectionUnitSuite) TestLazyItem_GetDataErrors() {
 			li := data.NewLazyItemWithInfo(
 				ctx,
 				&lazyItemGetter[models.Chatable]{
-					resourceID:    "resourceID",
+					resourceID: "resourceID",
-					item:          chat,
+					item:       chat,
-					getAndAugment: &m,
+					getter:     &m,
-					modTime:       now,
+					modTime:    now,
-					parentPath:    parentPath,
+					parentPath: parentPath,
 				},
 				ptr.Val(chat.GetId()),
 				now,
@@ -329,11 +324,11 @@ func (suite *CollectionUnitSuite) TestLazyItem_ReturnsEmptyReaderOnDeletedInFlig
 	li := data.NewLazyItemWithInfo(
 		ctx,
 		&lazyItemGetter[models.Chatable]{
-			resourceID:    "resourceID",
+			resourceID: "resourceID",
-			item:          chat,
+			item:       chat,
-			getAndAugment: &m,
+			getter:     &m,
-			modTime:       now,
+			modTime:    now,
-			parentPath:    parentPath,
+			parentPath: parentPath,
 		},
 		ptr.Val(chat.GetId()),
 		now,
@@ -368,11 +363,11 @@ func (suite *CollectionUnitSuite) TestLazyItem() {
 	li := data.NewLazyItemWithInfo(
 		ctx,
 		&lazyItemGetter[models.Chatable]{
-			resourceID:    "resourceID",
+			resourceID: "resourceID",
-			item:          chat,
+			item:       chat,
-			getAndAugment: &m,
+			getter:     &m,
-			modTime:       now,
+			modTime:    now,
-			parentPath:    parentPath,
+			parentPath: parentPath,
 		},
 		ptr.Val(chat.GetId()),
 		now,

src/internal/m365/collection/teamschats/handlers.go

@@ -22,7 +22,7 @@ type chatsItemer interface {
 
 type backupHandler[I chatsItemer] interface {
 	getContainerer[I]
-	getItemAndAugmentInfoer[I]
+	getItemer[I]
 	getItemer[I]
 	getItemIDser[I]
 	includeItemer[I]
@@ -39,22 +39,10 @@ type getContainerer[I chatsItemer] interface {
 	) (container[I], error)
 }
 
-type getItemAndAugmentInfoer[I chatsItemer] interface {
-	getItemer[I]
-	augmentItemInfoer[I]
-}
-
-type augmentItemInfoer[I chatsItemer] interface {
-	// augmentItemInfo completes the teamChatsInfo population with any data
-	// owned by the container and not accessible to the item.
-	augmentItemInfo(*details.TeamsChatsInfo, I)
-}
-
 // gets all item IDs in the container
 type getItemIDser[I chatsItemer] interface {
 	getItemIDs(
 		ctx context.Context,
-		cc api.CallConfig,
 	) ([]I, error)
 }
 

src/pkg/backup/details/entry.go

@@ -103,6 +103,12 @@ func (de Entry) ToLocationIDer(backupVersion int) (LocationIDer, error) {
 		}
 
 		baseLoc = path.Builder{}.Append(p.Root).Append(p.Folders...)
+
+	case TeamsChat:
+		baseLoc = &path.Builder{}
+
+	default:
+		return nil, clues.New("undentified item type").With("item_type", de.ItemInfo.infoType())
 	}
 
 	if baseLoc == nil {
@@ -141,26 +147,23 @@ func (de Entry) MinimumPrintable() any {
 // Headers returns the human-readable names of properties in a DetailsEntry
 // for printing out to a terminal in a columnar display.
 func (de Entry) Headers(skipID bool) []string {
-	hs := []string{}
+	var hs []string
 
-	if de.ItemInfo.Folder != nil {
+	switch {
+	case de.ItemInfo.Folder != nil:
 		hs = de.ItemInfo.Folder.Headers()
-	}
+	case de.ItemInfo.Exchange != nil:
-
-	if de.ItemInfo.Exchange != nil {
 		hs = de.ItemInfo.Exchange.Headers()
-	}
+	case de.ItemInfo.SharePoint != nil:
-
-	if de.ItemInfo.SharePoint != nil {
 		hs = de.ItemInfo.SharePoint.Headers()
-	}
+	case de.ItemInfo.OneDrive != nil:
-
-	if de.ItemInfo.OneDrive != nil {
 		hs = de.ItemInfo.OneDrive.Headers()
-	}
+	case de.ItemInfo.Groups != nil:
-
-	if de.ItemInfo.Groups != nil {
 		hs = de.ItemInfo.Groups.Headers()
+	case de.ItemInfo.TeamsChats != nil:
+		hs = de.ItemInfo.TeamsChats.Headers()
+	default:
+		hs = []string{"ERROR - Service not recognized"}
 	}
 
 	if skipID {
@@ -172,26 +175,23 @@ func (de Entry) Headers(skipID bool) []string {
 
 // Values returns the values matching the Headers list.
 func (de Entry) Values(skipID bool) []string {
-	vs := []string{}
+	var vs []string
 
-	if de.ItemInfo.Folder != nil {
+	switch {
+	case de.ItemInfo.Folder != nil:
 		vs = de.ItemInfo.Folder.Values()
-	}
+	case de.ItemInfo.Exchange != nil:
-
-	if de.ItemInfo.Exchange != nil {
 		vs = de.ItemInfo.Exchange.Values()
-	}
+	case de.ItemInfo.SharePoint != nil:
-
-	if de.ItemInfo.SharePoint != nil {
 		vs = de.ItemInfo.SharePoint.Values()
-	}
+	case de.ItemInfo.OneDrive != nil:
-
-	if de.ItemInfo.OneDrive != nil {
 		vs = de.ItemInfo.OneDrive.Values()
-	}
+	case de.ItemInfo.Groups != nil:
-
-	if de.ItemInfo.Groups != nil {
 		vs = de.ItemInfo.Groups.Values()
+	case de.ItemInfo.TeamsChats != nil:
+		vs = de.ItemInfo.TeamsChats.Values()
+	default:
+		vs = []string{"ERROR - Service not recognized"}
 	}
 
 	if skipID {

src/pkg/backup/details/iteminfo.go

@@ -91,19 +91,14 @@ func (i ItemInfo) infoType() ItemType {
 	switch {
 	case i.Folder != nil:
 		return i.Folder.ItemType
-
 	case i.Exchange != nil:
 		return i.Exchange.ItemType
-
 	case i.SharePoint != nil:
 		return i.SharePoint.ItemType
-
 	case i.OneDrive != nil:
 		return i.OneDrive.ItemType
-
 	case i.Groups != nil:
 		return i.Groups.ItemType
-
 	case i.TeamsChats != nil:
 		return i.TeamsChats.ItemType
 	}
@@ -115,19 +110,14 @@ func (i ItemInfo) size() int64 {
 	switch {
 	case i.Exchange != nil:
 		return i.Exchange.Size
-
 	case i.OneDrive != nil:
 		return i.OneDrive.Size
-
 	case i.SharePoint != nil:
 		return i.SharePoint.Size
-
 	case i.Groups != nil:
 		return i.Groups.Size
-
 	case i.Folder != nil:
 		return i.Folder.Size
-
 	case i.TeamsChats != nil:
 		return int64(i.TeamsChats.Chat.MessageCount)
 	}
@@ -139,19 +129,14 @@ func (i ItemInfo) Modified() time.Time {
 	switch {
 	case i.Exchange != nil:
 		return i.Exchange.Modified
-
 	case i.OneDrive != nil:
 		return i.OneDrive.Modified
-
 	case i.SharePoint != nil:
 		return i.SharePoint.Modified
-
 	case i.Groups != nil:
 		return i.Groups.Modified
-
 	case i.Folder != nil:
 		return i.Folder.Modified
-
 	case i.TeamsChats != nil:
 		return i.TeamsChats.Modified
 	}
@@ -163,19 +148,14 @@ func (i ItemInfo) uniqueLocation(baseLoc *path.Builder) (*uniqueLoc, error) {
 	switch {
 	case i.Exchange != nil:
 		return i.Exchange.uniqueLocation(baseLoc)
-
 	case i.OneDrive != nil:
 		return i.OneDrive.uniqueLocation(baseLoc)
-
 	case i.SharePoint != nil:
 		return i.SharePoint.uniqueLocation(baseLoc)
-
 	case i.Groups != nil:
 		return i.Groups.uniqueLocation(baseLoc)
-
 	case i.TeamsChats != nil:
 		return i.TeamsChats.uniqueLocation(baseLoc)
-
 	default:
 		return nil, clues.New("unsupported type")
 	}
@@ -185,19 +165,14 @@ func (i ItemInfo) updateFolder(f *FolderInfo) error {
 	switch {
 	case i.Exchange != nil:
 		return i.Exchange.updateFolder(f)
-
 	case i.OneDrive != nil:
 		return i.OneDrive.updateFolder(f)
-
 	case i.SharePoint != nil:
 		return i.SharePoint.updateFolder(f)
-
 	case i.Groups != nil:
 		return i.Groups.updateFolder(f)
-
 	case i.TeamsChats != nil:
 		return i.TeamsChats.updateFolder(f)
-
 	default:
 		return clues.New("unsupported type")
 	}

src/pkg/backup/details/teamsChats.go

@@ -44,7 +44,7 @@ type ChatInfo struct {
 	LastMessagePreview string    `json:"preview,omitempty"`
 	Members            []string  `json:"members,omitempty"`
 	MessageCount       int       `json:"messageCount,omitempty"`
-	Name               string    `json:"name,omitempty"`
+	Topic              string    `json:"topic,omitempty"`
 }
 
 // Headers returns the human-readable names of properties in a ChatsInfo
@@ -52,7 +52,7 @@ type ChatInfo struct {
 func (i TeamsChatsInfo) Headers() []string {
 	switch i.ItemType {
 	case TeamsChat:
-		return []string{"Name", "Last message", "Last message at", "Message count", "Created", "Members"}
+		return []string{"Topic", "Last message", "Last message at", "Message count", "Created", "Members"}
 	}
 
 	return []string{}
@@ -75,7 +75,7 @@ func (i TeamsChatsInfo) Values() []string {
 		}
 
 		return []string{
-			i.Chat.Name,
+			i.Chat.Topic,
 			i.Chat.LastMessagePreview,
 			dttm.FormatToTabularDisplay(i.Chat.LastMessageAt),
 			strconv.Itoa(i.Chat.MessageCount),

src/pkg/backup/details/teamsChats_test.go

@@ -42,7 +42,7 @@ func (suite *ChatsUnitSuite) TestChatsPrintable() {
 					LastMessagePreview: "last message preview",
 					Members:            []string{"foo@bar.baz", "fnords@smarf.zoomba"},
 					MessageCount:       42,
-					Name:               "chat name",
+					Topic:              "chat name",
 				},
 			},
 			expectHs: []string{"Name", "Last message", "Last message at", "Message count", "Created", "Members"},

src/pkg/selectors/teamsChats.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/alcionai/corso/src/pkg/backup/details"
 	"github.com/alcionai/corso/src/pkg/backup/identity"
+	"github.com/alcionai/corso/src/pkg/dttm"
 	"github.com/alcionai/corso/src/pkg/fault"
 	"github.com/alcionai/corso/src/pkg/filters"
 	"github.com/alcionai/corso/src/pkg/path"
@@ -254,21 +255,81 @@ func (sr *TeamsChatsRestore) ChatMember(memberID string) []TeamsChatsScope {
 	}
 }
 
-// ChatName produces one or more teamsChats chat name info scopes.
+// ChatTopic produces one or more teamsChats chat name info scopes.
 // Matches any chat whose name contains the provided string.
 // If any slice contains selectors.Any, that slice is reduced to [selectors.Any]
 // If any slice contains selectors.None, that slice is reduced to [selectors.None]
 // If any slice is empty, it defaults to [selectors.None]
-func (sr *TeamsChatsRestore) ChatName(memberID string) []TeamsChatsScope {
+func (sr *TeamsChatsRestore) ChatTopic(topic string) []TeamsChatsScope {
 	return []TeamsChatsScope{
 		makeInfoScope[TeamsChatsScope](
 			TeamsChatsChat,
-			TeamsChatsInfoChatName,
+			TeamsChatsInfoChatTopic,
-			[]string{memberID},
+			[]string{topic},
 			filters.In),
 	}
 }
 
+// ChatCreatedBefore produces one or more teamsChats chat name info scopes.
+// Matches any chat whose creation datetime is before the given datetime.
+// If any slice contains selectors.Any, that slice is reduced to [selectors.Any]
+// If any slice contains selectors.None, that slice is reduced to [selectors.None]
+// If any slice is empty, it defaults to [selectors.None]
+func (sr *TeamsChatsRestore) ChatCreatedBefore(datetime string) []TeamsChatsScope {
+	return []TeamsChatsScope{
+		makeInfoScope[TeamsChatsScope](
+			TeamsChatsChat,
+			TeamsChatsInfoChatCreatedBefore,
+			[]string{datetime},
+			filters.Greater),
+	}
+}
+
+// ChatCreatedBefore produces one or more teamsChats chat name info scopes.
+// Matches any chat whose creation datetime is after the given datetime.
+// If any slice contains selectors.Any, that slice is reduced to [selectors.Any]
+// If any slice contains selectors.None, that slice is reduced to [selectors.None]
+// If any slice is empty, it defaults to [selectors.None]
+func (sr *TeamsChatsRestore) ChatCreatedAfter(datetime string) []TeamsChatsScope {
+	return []TeamsChatsScope{
+		makeInfoScope[TeamsChatsScope](
+			TeamsChatsChat,
+			TeamsChatsInfoChatCreatedAfter,
+			[]string{datetime},
+			filters.Less),
+	}
+}
+
+// ChatLastMessageBefore produces one or more teamsChats chat name info scopes.
+// Matches any chat whose most recent message (if it has messages) is before the given datetime.
+// If any slice contains selectors.Any, that slice is reduced to [selectors.Any]
+// If any slice contains selectors.None, that slice is reduced to [selectors.None]
+// If any slice is empty, it defaults to [selectors.None]
+func (sr *TeamsChatsRestore) ChatLastMessageBefore(datetime string) []TeamsChatsScope {
+	return []TeamsChatsScope{
+		makeInfoScope[TeamsChatsScope](
+			TeamsChatsChat,
+			TeamsChatsInfoChatLastMessageBefore,
+			[]string{datetime},
+			filters.Greater),
+	}
+}
+
+// ChatCreatedBefore produces one or more teamsChats chat name info scopes.
+// Matches any chat whose most recent message (if it has messages) is after the given datetime.
+// If any slice contains selectors.Any, that slice is reduced to [selectors.Any]
+// If any slice contains selectors.None, that slice is reduced to [selectors.None]
+// If any slice is empty, it defaults to [selectors.None]
+func (sr *TeamsChatsRestore) ChatLastMessageAfter(datetime string) []TeamsChatsScope {
+	return []TeamsChatsScope{
+		makeInfoScope[TeamsChatsScope](
+			TeamsChatsChat,
+			TeamsChatsInfoChatLastMesasgeAfter,
+			[]string{datetime},
+			filters.Less),
+	}
+}
+
 // ---------------------------------------------------------------------------
 // Categories
 // ---------------------------------------------------------------------------
@@ -288,8 +349,12 @@ const (
 	TeamsChatsChat teamsChatsCategory = "TeamsChatsChat"
 
 	// data contained within details.ItemInfo
-	TeamsChatsInfoChatMember teamsChatsCategory = "TeamsChatsInfoChatMember"
+	TeamsChatsInfoChatCreatedBefore     teamsChatsCategory = "TeamsChatsInfoChatCreatedBefore"
-	TeamsChatsInfoChatName   teamsChatsCategory = "TeamsChatsInfoChatName"
+	TeamsChatsInfoChatCreatedAfter      teamsChatsCategory = "TeamsChatsInfoChatCreatedAfter"
+	TeamsChatsInfoChatLastMessageBefore teamsChatsCategory = "TeamsChatsInfoChatLastMessageBefore"
+	TeamsChatsInfoChatLastMesasgeAfter  teamsChatsCategory = "TeamsChatsInfoChatLastMesasgeAfter"
+	TeamsChatsInfoChatMember            teamsChatsCategory = "TeamsChatsInfoChatMember"
+	TeamsChatsInfoChatTopic             teamsChatsCategory = "TeamsChatsInfoChatName"
 )
 
 // teamsChatsLeafProperties describes common metadata of the leaf categories
@@ -317,7 +382,9 @@ func (ec teamsChatsCategory) String() string {
 // Ex: TeamsChatsUser.leafCat() => TeamsChatsUser
 func (ec teamsChatsCategory) leafCat() categorizer {
 	switch ec {
-	case TeamsChatsChat, TeamsChatsInfoChatMember, TeamsChatsInfoChatName:
+	case TeamsChatsChat, TeamsChatsInfoChatMember, TeamsChatsInfoChatTopic,
+		TeamsChatsInfoChatCreatedBefore, TeamsChatsInfoChatCreatedAfter,
+		TeamsChatsInfoChatLastMessageBefore, TeamsChatsInfoChatLastMesasgeAfter:
 		return TeamsChatsChat
 	}
 
@@ -505,8 +572,16 @@ func (s TeamsChatsScope) matchesInfo(dii details.ItemInfo) bool {
 	switch infoCat {
 	case TeamsChatsInfoChatMember:
 		i = strings.Join(info.Chat.Members, ",")
-	case TeamsChatsInfoChatName:
+	case TeamsChatsInfoChatTopic:
-		i = info.Chat.Name
+		i = info.Chat.Topic
+	case TeamsChatsInfoChatCreatedBefore, TeamsChatsInfoChatCreatedAfter:
+		i = dttm.Format(info.Chat.CreatedAt)
+	case TeamsChatsInfoChatLastMessageBefore, TeamsChatsInfoChatLastMesasgeAfter:
+		if info.Chat.MessageCount < 1 {
+			return false
+		}
+
+		i = dttm.Format(info.Chat.LastMessageAt)
 	}
 
 	return s.Matches(infoCat, i)

src/pkg/selectors/teamsChats_test.go

@@ -12,6 +12,7 @@ import (
 
 	"github.com/alcionai/corso/src/internal/tester"
 	"github.com/alcionai/corso/src/pkg/backup/details"
+	"github.com/alcionai/corso/src/pkg/dttm"
 	"github.com/alcionai/corso/src/pkg/fault"
 	"github.com/alcionai/corso/src/pkg/filters"
 	"github.com/alcionai/corso/src/pkg/path"
@@ -252,14 +253,16 @@ func (suite *TeamsChatsSelectorSuite) TestTeamsChatsScope_MatchesInfo() {
 	cs := NewTeamsChatsRestore(Any())
 
 	const (
-		name    = "smarf mcfnords"
+		topic   = "smarf mcfnords"
 		member  = "cooks@2many.smarf"
 		subject = "I have seen the fnords!"
+		dtype   = details.TeamsChat
 	)
 
 	var (
 		now    = time.Now()
-		future = now.Add(1 * time.Minute)
+		past   = dttm.Format(now.Add(-1 * time.Minute))
+		future = dttm.Format(now.Add(1 * time.Minute))
 	)
 
 	infoWith := func(itype details.ItemType) details.ItemInfo {
@@ -269,11 +272,11 @@ func (suite *TeamsChatsSelectorSuite) TestTeamsChatsScope_MatchesInfo() {
 				Chat: details.ChatInfo{
 					CreatedAt:          now,
 					HasExternalMembers: false,
-					LastMessageAt:      future,
+					LastMessageAt:      now,
 					LastMessagePreview: "preview",
 					Members:            []string{member},
 					MessageCount:       1,
-					Name:               name,
+					Topic:              topic,
 				},
 			},
 		}
@@ -285,12 +288,20 @@ func (suite *TeamsChatsSelectorSuite) TestTeamsChatsScope_MatchesInfo() {
 		scope  []TeamsChatsScope
 		expect assert.BoolAssertionFunc
 	}{
-		{"chat with a different member", details.TeamsChat, cs.ChatMember("blarps"), assert.False},
+		{"chat with a different member", dtype, cs.ChatMember("blarps"), assert.False},
-		{"chat with the same member", details.TeamsChat, cs.ChatMember(member), assert.True},
+		{"chat with the same member", dtype, cs.ChatMember(member), assert.True},
-		{"chat with a member submatch search", details.TeamsChat, cs.ChatMember(member[2:5]), assert.True},
+		{"chat with a member submatch search", dtype, cs.ChatMember(member[2:5]), assert.True},
-		{"chat with a different name", details.TeamsChat, cs.ChatName("blarps"), assert.False},
+		{"chat with a different topic", dtype, cs.ChatTopic("blarps"), assert.False},
-		{"chat with the same name", details.TeamsChat, cs.ChatName(name), assert.True},
+		{"chat with the same topic", dtype, cs.ChatTopic(topic), assert.True},
-		{"chat with a subname search", details.TeamsChat, cs.ChatName(name[2:5]), assert.True},
+		{"chat with a subtopic search", dtype, cs.ChatTopic(topic[2:5]), assert.True},
+		{"chat created after", dtype, cs.ChatCreatedAfter(past), assert.True},
+		{"chat not created after", dtype, cs.ChatCreatedAfter(future), assert.False},
+		{"chat created before", dtype, cs.ChatCreatedBefore(future), assert.True},
+		{"chat not created before", dtype, cs.ChatCreatedBefore(past), assert.False},
+		{"chat last message after", dtype, cs.ChatLastMessageAfter(past), assert.True},
+		{"chat last message not after", dtype, cs.ChatLastMessageAfter(future), assert.False},
+		{"chat last message before", dtype, cs.ChatLastMessageBefore(future), assert.True},
+		{"chat last message not before", dtype, cs.ChatLastMessageBefore(past), assert.False},
 	}
 	for _, test := range table {
 		suite.Run(test.name, func() {

src/pkg/services/m365/api/teamsChats.go

@@ -103,7 +103,7 @@ func TeamsChatInfo(chat models.Chatable) *details.TeamsChatsInfo {
 			LastMessagePreview: preview,
 			Members:            memberNames,
 			MessageCount:       len(msgs),
-			Name:               ptr.Val(chat.GetTopic()),
+			Topic:              ptr.Val(chat.GetTopic()),
 		},
 	}
 }

src/pkg/services/m365/api/teamsChats_pager.go

@@ -12,6 +12,79 @@ import (
 	"github.com/alcionai/corso/src/pkg/services/m365/api/pagers"
 )
 
+// ---------------------------------------------------------------------------
+// chat members pager
+// ---------------------------------------------------------------------------
+
+// delta queries are not supported
+var _ pagers.NonDeltaHandler[models.ConversationMemberable] = &chatMembersPageCtrl{}
+
+type chatMembersPageCtrl struct {
+	chatID  string
+	gs      graph.Servicer
+	builder *chats.ItemMembersRequestBuilder
+	options *chats.ItemMembersRequestBuilderGetRequestConfiguration
+}
+
+func (p *chatMembersPageCtrl) SetNextLink(nextLink string) {
+	p.builder = chats.NewItemMembersRequestBuilder(nextLink, p.gs.Adapter())
+}
+
+func (p *chatMembersPageCtrl) GetPage(
+	ctx context.Context,
+) (pagers.NextLinkValuer[models.ConversationMemberable], error) {
+	resp, err := p.builder.Get(ctx, p.options)
+	return resp, graph.Stack(ctx, err).OrNil()
+}
+
+func (p *chatMembersPageCtrl) ValidModTimes() bool {
+	return true
+}
+
+func (c Chats) NewChatMembersPager(
+	chatID string,
+	cc CallConfig,
+) *chatMembersPageCtrl {
+	builder := c.Stable.
+		Client().
+		Chats().
+		ByChatId(chatID).
+		Members()
+
+	options := &chats.ItemMembersRequestBuilderGetRequestConfiguration{
+		QueryParameters: &chats.ItemMembersRequestBuilderGetQueryParameters{},
+		Headers:         newPreferHeaders(preferPageSize(maxNonDeltaPageSize)),
+	}
+
+	if len(cc.Select) > 0 {
+		options.QueryParameters.Select = cc.Select
+	}
+
+	if len(cc.Expand) > 0 {
+		options.QueryParameters.Expand = cc.Expand
+	}
+
+	return &chatMembersPageCtrl{
+		chatID:  chatID,
+		builder: builder,
+		gs:      c.Stable,
+		options: options,
+	}
+}
+
+// GetChatMembers fetches a delta of all members in the chat.
+func (c Chats) GetChatMembers(
+	ctx context.Context,
+	chatID string,
+	cc CallConfig,
+) ([]models.ConversationMemberable, error) {
+	ctx = clues.Add(ctx, "chat_id", chatID)
+	pager := c.NewChatMembersPager(chatID, cc)
+	items, err := pagers.BatchEnumerateItems[models.ConversationMemberable](ctx, pager)
+
+	return items, graph.Stack(ctx, err).OrNil()
+}
+
 // ---------------------------------------------------------------------------
 // chat message pager
 // ---------------------------------------------------------------------------

src/pkg/services/m365/api/teamsChats_pager_test.go

@@ -61,6 +61,11 @@ func (suite *ChatsPagerIntgSuite) TestEnumerateChats() {
 				ac,
 				chatID,
 				chat.GetLastMessagePreview())
+
+			testEnumerateChatMembers(
+				suite.T(),
+				ac,
+				chatID)
 		})
 	}
 }
@@ -123,3 +128,22 @@ func testEnumerateChatMessages(
 		}
 	}
 }
+
+func testEnumerateChatMembers(
+	t *testing.T,
+	ac Chats,
+	chatID string,
+) {
+	ctx, flush := tester.NewContext(t)
+	defer flush()
+
+	cc := CallConfig{}
+
+	members, err := ac.GetChatMembers(ctx, chatID, cc)
+	require.NoError(t, err, clues.ToCore(err))
+
+	// no good way to test members right now.  Even though
+	// the graph api response contains the `userID` and `email`
+	// properties, we can't access them in the sdk model
+	assert.NotEmpty(t, members)
+}

src/pkg/services/m365/api/teamsChats_test.go

@@ -64,7 +64,7 @@ func (suite *ChatsAPIUnitSuite) TestChatsInfo() {
 					ItemType: details.TeamsChat,
 					Modified: then,
 					Chat: details.ChatInfo{
-						Name:               "Hello world",
+						Topic:              "Hello world",
 						LastMessageAt:      then,
 						LastMessagePreview: id,
 						Members:            []string{},
@@ -92,7 +92,7 @@ func (suite *ChatsAPIUnitSuite) TestChatsInfo() {
 					ItemType: details.TeamsChat,
 					Modified: then,
 					Chat: details.ChatInfo{
-						Name:               "Hello world",
+						Topic:              "Hello world",
 						LastMessageAt:      then,
 						LastMessagePreview: id,
 						Members:            []string{},
@@ -120,7 +120,7 @@ func (suite *ChatsAPIUnitSuite) TestChatsInfo() {
 					ItemType: details.TeamsChat,
 					Modified: then,
 					Chat: details.ChatInfo{
-						Name:               "Hello world",
+						Topic:              "Hello world",
 						LastMessageAt:      time.Time{},
 						LastMessagePreview: "",
 						Members:            []string{},
@@ -138,7 +138,7 @@ func (suite *ChatsAPIUnitSuite) TestChatsInfo() {
 			chat, expected := test.expected()
 			result := TeamsChatInfo(chat)
 
-			assert.Equal(t, expected.Chat.Name, result.Chat.Name)
+			assert.Equal(t, expected.Chat.Topic, result.Chat.Topic)
 
 			expectCreated := chat.GetCreatedDateTime()
 			if expectCreated != nil {