teams discovery API (#3850)

<!-- PR description-->

Teams discovery API
- fetch all groups from endpoint and filter teams out of it.
- fetch team with ID. 

Permission added- 
- Application- Team.ReadBasic.All
- Group.Read.All

#### Does this PR need a docs update or release note?
- [ ] 🕐 Yes, but in a later PR

#### Type of change

<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature

#### Issue(s)

<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* https://github.com/alcionai/corso/issues/3836

#### Test Plan

<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

src/internal/operations/opstatus_string.go

@@ -1,4 +1,4 @@
-// Code generated by "stringer -type=opStatus -linecomment"; DO NOT EDIT.
+// Code generated by "stringer -type=OpStatus -linecomment"; DO NOT EDIT.
 
 package operations
 
@@ -15,13 +15,13 @@ func _() {
 	_ = x[NoData-4]
 }
 
-const _opStatus_name = "Status UnknownIn ProgressCompletedFailedNo Data"
+const _OpStatus_name = "Status UnknownIn ProgressCompletedFailedNo Data"
 
-var _opStatus_index = [...]uint8{0, 14, 25, 34, 40, 47}
+var _OpStatus_index = [...]uint8{0, 14, 25, 34, 40, 47}
 
 func (i OpStatus) String() string {
-	if i < 0 || i >= OpStatus(len(_opStatus_index)-1) {
+	if i < 0 || i >= OpStatus(len(_OpStatus_index)-1) {
-		return "opStatus(" + strconv.FormatInt(int64(i), 10) + ")"
+		return "OpStatus(" + strconv.FormatInt(int64(i), 10) + ")"
 	}
-	return _opStatus_name[_opStatus_index[i]:_opStatus_index[i+1]]
+	return _OpStatus_name[_OpStatus_index[i]:_OpStatus_index[i+1]]
 }

src/internal/tester/tconfig/config.go

@@ -26,6 +26,8 @@ const (
 	TestCfgSecondarySiteID  = "secondarym365siteid"
 	TestCfgSiteID           = "m365siteid"
 	TestCfgSiteURL          = "m365siteurl"
+	TestCfgTeamID           = "m365teamid"
+	TestCfgGroupID          = "m365groupid"
 	TestCfgUserID           = "m365userid"
 	TestCfgSecondaryUserID  = "secondarym365userid"
 	TestCfgTertiaryUserID   = "tertiarym365userid"
@@ -41,6 +43,8 @@ const (
 	EnvCorsoM365LoadTestOrgUsers     = "CORSO_M365_LOAD_TEST_ORG_USERS"
 	EnvCorsoM365TestSiteID           = "CORSO_M365_TEST_SITE_ID"
 	EnvCorsoM365TestSiteURL          = "CORSO_M365_TEST_SITE_URL"
+	EnvCorsoM365TestTeamID           = "CORSO_M365_TEST_TEAM_ID"
+	EnvCorsoM365TestGroupID          = "CORSO_M365_TEST_GROUP_ID"
 	EnvCorsoM365TestUserID           = "CORSO_M365_TEST_USER_ID"
 	EnvCorsoSecondaryM365TestSiteID  = "CORSO_SECONDARY_M365_TEST_SITE_ID"
 	EnvCorsoSecondaryM365TestUserID  = "CORSO_SECONDARY_M365_TEST_USER_ID"
@@ -150,6 +154,18 @@ func ReadTestConfig() (map[string]string, error) {
 		os.Getenv(EnvCorsoM365TestSiteID),
 		vpr.GetString(TestCfgSiteID),
 		"4892edf5-2ebf-46be-a6e5-a40b2cbf1c1a,38ab6d06-fc82-4417-af93-22d8733c22be")
+	fallbackTo(
+		testEnv,
+		TestCfgTeamID,
+		os.Getenv(EnvCorsoM365TestTeamID),
+		vpr.GetString(TestCfgTeamID),
+		"6f24b40d-b13d-4752-980f-f5fb9fba7aa0")
+	fallbackTo(
+		testEnv,
+		TestCfgGroupID,
+		os.Getenv(EnvCorsoM365TestGroupID),
+		vpr.GetString(TestCfgGroupID),
+		"6f24b40d-b13d-4752-980f-f5fb9fba7aa0")
 	fallbackTo(
 		testEnv,
 		TestCfgSiteURL,

src/internal/tester/tconfig/protected_resources.go

@@ -220,3 +220,29 @@ func UnlicensedM365UserID(t *testing.T) string {
 
 	return strings.ToLower(cfg[TestCfgSecondaryUserID])
 }
+
+// Teams
+
+// M365TeamsID returns a teamID string representing the m365TeamsID described
+// by either the env var CORSO_M365_TEST_TEAM_ID, the corso_test.toml config
+// file or the default value (in that order of priority).  The default is a
+// last-attempt fallback that will only work on alcion's testing org.
+func M365TeamsID(t *testing.T) string {
+	cfg, err := ReadTestConfig()
+	require.NoError(t, err, "retrieving m365 team id from test configuration: %+v", clues.ToCore(err))
+
+	return strings.ToLower(cfg[TestCfgTeamID])
+}
+
+// Groups
+
+// M365GroupID returns a groupID string representing the m365GroupID described
+// by either the env var CORSO_M365_TEST_GROUP_ID, the corso_test.toml config
+// file or the default value (in that order of priority).  The default is a
+// last-attempt fallback that will only work on alcion's testing org.
+func M365GroupID(t *testing.T) string {
+	cfg, err := ReadTestConfig()
+	require.NoError(t, err, "retrieving m365 group id from test configuration: %+v", clues.ToCore(err))
+
+	return strings.ToLower(cfg[TestCfgTeamID])
+}

src/pkg/path/service_type.go

@@ -29,6 +29,8 @@ const (
 	ExchangeMetadataService               // exchangeMetadata
 	OneDriveMetadataService               // onedriveMetadata
 	SharePointMetadataService             // sharepointMetadata
+	GroupsService                         // groups
+	GroupsMetadataService                 // groupsMetadata
 )
 
 func toServiceType(service string) ServiceType {

src/pkg/path/servicetype_string.go

@@ -15,11 +15,13 @@ func _() {
 	_ = x[ExchangeMetadataService-4]
 	_ = x[OneDriveMetadataService-5]
 	_ = x[SharePointMetadataService-6]
+	_ = x[GroupsService-7]
+	_ = x[GroupsMetadataService-8]
 }
 
-const _ServiceType_name = "UnknownServiceexchangeonedrivesharepointexchangeMetadataonedriveMetadatasharepointMetadata"
+const _ServiceType_name = "UnknownServiceexchangeonedrivesharepointexchangeMetadataonedriveMetadatasharepointMetadatagroupsgroupsMetadata"
 
-var _ServiceType_index = [...]uint8{0, 14, 22, 30, 40, 56, 72, 90}
+var _ServiceType_index = [...]uint8{0, 14, 22, 30, 40, 56, 72, 90, 96, 110}
 
 func (i ServiceType) String() string {
 	if i < 0 || i >= ServiceType(len(_ServiceType_index)-1) {

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

@@ -0,0 +1,205 @@
+package api
+
+import (
+	"context"
+
+	"github.com/alcionai/clues"
+	msgraphgocore "github.com/microsoftgraph/msgraph-sdk-go-core"
+	"github.com/microsoftgraph/msgraph-sdk-go/models"
+
+	"github.com/alcionai/corso/src/internal/common/str"
+	"github.com/alcionai/corso/src/internal/common/tform"
+	"github.com/alcionai/corso/src/internal/m365/graph"
+	"github.com/alcionai/corso/src/pkg/fault"
+	"github.com/alcionai/corso/src/pkg/logger"
+)
+
+const (
+	teamsAdditionalDataLabel    = "Team"
+	ResourceProvisioningOptions = "resourceProvisioningOptions"
+)
+
+// ---------------------------------------------------------------------------
+// controller
+// ---------------------------------------------------------------------------
+
+func (c Client) Groups() Groups {
+	return Groups{c}
+}
+
+// On creation of each Teams team a corrsponding group gets created.
+// The group acts as the protected resource, and all teams data like events,
+// drive and mail messages are owned by that group.
+
+// Groups is an interface-compliant provider of the client.
+type Groups struct {
+	Client
+}
+
+// GetAllGroups retrieves all groups.
+func (c Groups) GetAll(
+	ctx context.Context,
+	errs *fault.Bus,
+) ([]models.Groupable, error) {
+	service, err := c.Service()
+	if err != nil {
+		return nil, err
+	}
+
+	return getGroups(ctx, errs, service)
+}
+
+// GetTeams retrieves all Teams.
+func (c Groups) GetTeams(
+	ctx context.Context,
+	errs *fault.Bus,
+) ([]models.Groupable, error) {
+	service, err := c.Service()
+	if err != nil {
+		return nil, err
+	}
+
+	groups, err := getGroups(ctx, errs, service)
+	if err != nil {
+		return nil, err
+	}
+
+	return OnlyTeams(ctx, groups), nil
+}
+
+// GetAll retrieves all groups.
+func getGroups(
+	ctx context.Context,
+	errs *fault.Bus,
+	service graph.Servicer,
+) ([]models.Groupable, error) {
+	resp, err := service.Client().Groups().Get(ctx, nil)
+	if err != nil {
+		return nil, graph.Wrap(ctx, err, "getting all groups")
+	}
+
+	iter, err := msgraphgocore.NewPageIterator[models.Groupable](
+		resp,
+		service.Adapter(),
+		models.CreateGroupCollectionResponseFromDiscriminatorValue)
+	if err != nil {
+		return nil, graph.Wrap(ctx, err, "creating groups iterator")
+	}
+
+	var (
+		groups = make([]models.Groupable, 0)
+		el     = errs.Local()
+	)
+
+	iterator := func(item models.Groupable) bool {
+		if el.Failure() != nil {
+			return false
+		}
+
+		err := ValidateGroup(item)
+		if err != nil {
+			el.AddRecoverable(ctx, graph.Wrap(ctx, err, "validating groups"))
+		} else {
+			groups = append(groups, item)
+		}
+
+		return true
+	}
+
+	if err := iter.Iterate(ctx, iterator); err != nil {
+		return nil, graph.Wrap(ctx, err, "iterating all groups")
+	}
+
+	return groups, el.Failure()
+}
+
+func OnlyTeams(ctx context.Context, groups []models.Groupable) []models.Groupable {
+	log := logger.Ctx(ctx)
+
+	var teams []models.Groupable
+
+	for _, g := range groups {
+		if g.GetAdditionalData()[ResourceProvisioningOptions] != nil {
+			val, _ := tform.AnyValueToT[[]any](ResourceProvisioningOptions, g.GetAdditionalData())
+			for _, v := range val {
+				s, err := str.AnyToString(v)
+				if err != nil {
+					log.Debug("could not be converted to string value: ", ResourceProvisioningOptions)
+					continue
+				}
+
+				if s == teamsAdditionalDataLabel {
+					teams = append(teams, g)
+				}
+			}
+		}
+	}
+
+	return teams
+}
+
+// GetID retrieves group by groupID.
+func (c Groups) GetByID(
+	ctx context.Context,
+	identifier string,
+) (models.Groupable, error) {
+	service, err := c.Service()
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := service.Client().Groups().ByGroupId(identifier).Get(ctx, nil)
+	if err != nil {
+		err := graph.Wrap(ctx, err, "getting group by id")
+
+		return nil, err
+	}
+
+	return resp, graph.Stack(ctx, err).OrNil()
+}
+
+// GetTeamByID retrieves group by groupID.
+func (c Groups) GetTeamByID(
+	ctx context.Context,
+	identifier string,
+) (models.Groupable, error) {
+	service, err := c.Service()
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := service.Client().Groups().ByGroupId(identifier).Get(ctx, nil)
+	if err != nil {
+		err := graph.Wrap(ctx, err, "getting group by id")
+
+		return nil, err
+	}
+
+	groups := []models.Groupable{resp}
+
+	if len(OnlyTeams(ctx, groups)) == 0 {
+		err := clues.New("given teamID is not related to any team")
+
+		return nil, err
+	}
+
+	return resp, graph.Stack(ctx, err).OrNil()
+}
+
+// ---------------------------------------------------------------------------
+// helpers
+// ---------------------------------------------------------------------------
+
+// ValidateGroup ensures the item is a Groupable, and contains the necessary
+// identifiers that we handle with all groups.
+func ValidateGroup(item models.Groupable) error {
+	if item.GetId() == nil {
+		return clues.New("missing ID")
+	}
+
+	if item.GetDisplayName() == nil {
+		return clues.New("missing display name")
+	}
+
+	return nil
+}

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

@@ -0,0 +1,250 @@
+package api_test
+
+import (
+	"testing"
+
+	"github.com/alcionai/clues"
+	"github.com/google/uuid"
+	"github.com/microsoftgraph/msgraph-sdk-go/models"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+
+	"github.com/alcionai/corso/src/internal/common/ptr"
+	"github.com/alcionai/corso/src/internal/tester"
+	"github.com/alcionai/corso/src/internal/tester/tconfig"
+	"github.com/alcionai/corso/src/pkg/fault"
+	"github.com/alcionai/corso/src/pkg/services/m365/api"
+)
+
+type GroupUnitSuite struct {
+	tester.Suite
+}
+
+func TestGroupsUnitSuite(t *testing.T) {
+	suite.Run(t, &GroupUnitSuite{Suite: tester.NewUnitSuite(t)})
+}
+
+func (suite *GroupUnitSuite) TestValidateGroup() {
+	group := models.NewGroup()
+	group.SetDisplayName(ptr.To("testgroup"))
+	group.SetId(ptr.To("testID"))
+
+	tests := []struct {
+		name           string
+		args           models.Groupable
+		errCheck       assert.ErrorAssertionFunc
+		errIsSkippable bool
+	}{
+		{
+			name: "Valid group ",
+			args: func() *models.Group {
+				s := models.NewGroup()
+				s.SetId(ptr.To("id"))
+				s.SetDisplayName(ptr.To("testgroup"))
+				return s
+			}(),
+			errCheck: assert.NoError,
+		},
+		{
+			name: "No name",
+			args: func() *models.Group {
+				s := models.NewGroup()
+				s.SetId(ptr.To("id"))
+				return s
+			}(),
+			errCheck: assert.Error,
+		},
+		{
+			name: "No ID",
+			args: func() *models.Group {
+				s := models.NewGroup()
+				s.SetDisplayName(ptr.To("testgroup"))
+				return s
+			}(),
+			errCheck: assert.Error,
+		},
+	}
+
+	for _, test := range tests {
+		suite.Run(test.name, func() {
+			t := suite.T()
+
+			err := api.ValidateGroup(test.args)
+			test.errCheck(t, err, clues.ToCore(err))
+
+			if test.errIsSkippable {
+				assert.ErrorIs(t, err, api.ErrKnownSkippableCase)
+			}
+		})
+	}
+}
+
+type GroupsIntgSuite struct {
+	tester.Suite
+	its intgTesterSetup
+}
+
+func TestGroupsIntgSuite(t *testing.T) {
+	suite.Run(t, &GroupsIntgSuite{
+		Suite: tester.NewIntegrationSuite(
+			t,
+			[][]string{tconfig.M365AcctCredEnvs}),
+	})
+}
+
+func (suite *GroupsIntgSuite) SetupSuite() {
+	suite.its = newIntegrationTesterSetup(suite.T())
+}
+
+func (suite *GroupsIntgSuite) TestGetAllGroups() {
+	t := suite.T()
+
+	ctx, flush := tester.NewContext(t)
+	defer flush()
+
+	groups, err := suite.its.ac.
+		Groups().
+		GetAll(ctx, fault.New(true))
+	require.NoError(t, err)
+	require.NotZero(t, len(groups), "must have at least one group")
+}
+
+func (suite *GroupsIntgSuite) TestGetAllTeams() {
+	t := suite.T()
+
+	ctx, flush := tester.NewContext(t)
+	defer flush()
+
+	teams, err := suite.its.ac.
+		Groups().
+		GetTeams(ctx, fault.New(true))
+	require.NoError(t, err)
+	require.NotZero(t, len(teams), "must have at least one teams")
+
+	groups, err := suite.its.ac.
+		Groups().
+		GetAll(ctx, fault.New(true))
+	require.NoError(t, err)
+	require.NotZero(t, len(groups), "must have at least one group")
+
+	var isTeam bool
+
+	if len(groups) > len(teams) {
+		isTeam = true
+	}
+
+	assert.True(t, isTeam, "must only return teams")
+}
+
+func (suite *GroupsIntgSuite) TestTeams_GetByID() {
+	var (
+		t      = suite.T()
+		teamID = tconfig.M365TeamsID(t)
+	)
+
+	teamsAPI := suite.its.ac.Groups()
+
+	table := []struct {
+		name      string
+		id        string
+		expectErr func(*testing.T, error)
+	}{
+		{
+			name: "3 part id",
+			id:   teamID,
+			expectErr: func(t *testing.T, err error) {
+				assert.NoError(t, err, clues.ToCore(err))
+			},
+		},
+		{
+			name: "malformed id",
+			id:   uuid.NewString(),
+			expectErr: func(t *testing.T, err error) {
+				assert.Error(t, err, clues.ToCore(err))
+			},
+		},
+		{
+			name: "random id",
+			id:   uuid.NewString() + "," + uuid.NewString(),
+			expectErr: func(t *testing.T, err error) {
+				assert.Error(t, err, clues.ToCore(err))
+			},
+		},
+
+		{
+			name: "malformed url",
+			id:   "barunihlda",
+			expectErr: func(t *testing.T, err error) {
+				assert.Error(t, err, clues.ToCore(err))
+			},
+		},
+	}
+	for _, test := range table {
+		suite.Run(test.name, func() {
+			t := suite.T()
+
+			ctx, flush := tester.NewContext(t)
+			defer flush()
+
+			_, err := teamsAPI.GetTeamByID(ctx, test.id)
+			test.expectErr(t, err)
+		})
+	}
+}
+
+func (suite *GroupsIntgSuite) TestGroups_GetByID() {
+	var (
+		t       = suite.T()
+		groupID = tconfig.M365GroupID(t)
+	)
+
+	groupsAPI := suite.its.ac.Groups()
+
+	table := []struct {
+		name      string
+		id        string
+		expectErr func(*testing.T, error)
+	}{
+		{
+			name: "3 part id",
+			id:   groupID,
+			expectErr: func(t *testing.T, err error) {
+				assert.NoError(t, err, clues.ToCore(err))
+			},
+		},
+		{
+			name: "malformed id",
+			id:   uuid.NewString(),
+			expectErr: func(t *testing.T, err error) {
+				assert.Error(t, err, clues.ToCore(err))
+			},
+		},
+		{
+			name: "random id",
+			id:   uuid.NewString() + "," + uuid.NewString(),
+			expectErr: func(t *testing.T, err error) {
+				assert.Error(t, err, clues.ToCore(err))
+			},
+		},
+
+		{
+			name: "malformed url",
+			id:   "barunihlda",
+			expectErr: func(t *testing.T, err error) {
+				assert.Error(t, err, clues.ToCore(err))
+			},
+		},
+	}
+	for _, test := range table {
+		suite.Run(test.name, func() {
+			t := suite.T()
+
+			ctx, flush := tester.NewContext(t)
+			defer flush()
+
+			_, err := groupsAPI.GetByID(ctx, test.id)
+			test.expectErr(t, err)
+		})
+	}
+}

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

@@ -83,6 +83,7 @@ type intgTesterSetup struct {
 	siteID                string
 	siteDriveID           string
 	siteDriveRootFolderID string
+	teamID                string
 }
 
 func newIntegrationTesterSetup(t *testing.T) intgTesterSetup {
@@ -131,5 +132,13 @@ func newIntegrationTesterSetup(t *testing.T) intgTesterSetup {
 
 	its.siteDriveRootFolderID = ptr.Val(siteDriveRootFolder.GetId())
 
+	// teams
+	its.teamID = tconfig.M365TeamsID(t)
+
+	team, err := its.ac.Groups().GetTeamByID(ctx, its.teamID)
+	require.NoError(t, err, clues.ToCore(err))
+
+	its.teamID = ptr.Val(team.GetId())
+
 	return its
 }