UserAuth: clean-up auth entries on update (#78377)

* UserAuth: clean-up auth entries on update

* Update pkg/services/login/authinfoservice/database/database.go

Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>
---------

Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>

pkg/services/login/authinfoservice/database/database.go

@@ -165,6 +165,7 @@ func (s *AuthInfoStore) UpdateAuthInfoDate(ctx context.Context, authInfo *login.
 	}
 	return s.sqlStore.WithTransactionalDbSession(ctx, func(sess *db.Session) error {
 		_, err := sess.Cols("created").Update(authInfo, cond)
+
 		return err
 	})
 }
@@ -208,8 +209,32 @@ func (s *AuthInfoStore) UpdateAuthInfo(ctx context.Context, cmd *login.UpdateAut
 
 	return s.sqlStore.WithTransactionalDbSession(ctx, func(sess *db.Session) error {
 		upd, err := sess.MustCols("o_auth_expiry").Where("user_id = ? AND auth_module = ?", cmd.UserId, cmd.AuthModule).Update(authUser)
-		s.logger.Debug("Updated user_auth", "user_id", cmd.UserId,
+
-			"auth_id", cmd.AuthId, "auth_module", cmd.AuthModule, "rows", upd)
+		s.logger.Debug("Updated user_auth", "user_id", cmd.UserId, "auth_id", cmd.AuthId, "auth_module", cmd.AuthModule, "rows", upd)
+
+		// Clean up duplicated entries
+		if upd > 1 {
+			var id int64
+			ok, err := sess.SQL(
+				"SELECT id FROM user_auth WHERE user_id = ? AND auth_module = ? AND auth_id = ?",
+				cmd.UserId, cmd.AuthModule, cmd.AuthId,
+			).Get(&id)
+
+			if err != nil {
+				return err
+			}
+
+			if !ok {
+				return nil
+			}
+
+			_, err = sess.Exec(
+				"DELETE FROM user_auth WHERE user_id = ? AND auth_module = ? AND auth_id = ? AND id != ?",
+				cmd.UserId, cmd.AuthModule, cmd.AuthId, id,
+			)
+			return err
+		}
+
 		return err
 	})
 }

pkg/services/login/authinfoservice/database/database_test.go

@@ -0,0 +1,68 @@
+package database
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"golang.org/x/oauth2"
+
+	"github.com/grafana/grafana/pkg/infra/db"
+	"github.com/grafana/grafana/pkg/services/login"
+	secretstest "github.com/grafana/grafana/pkg/services/secrets/fakes"
+)
+
+func TestIntegrationAuthInfoStore(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test")
+	}
+
+	sql := db.InitTestDB(t)
+	store := ProvideAuthInfoStore(sql, secretstest.NewFakeSecretsService(), nil)
+
+	t.Run("should remove duplicates on update", func(t *testing.T) {
+		ctx := context.Background()
+		setCmd := &login.SetAuthInfoCommand{
+			AuthModule: login.GenericOAuthModule,
+			AuthId:     "1",
+			UserId:     1,
+		}
+
+		require.NoError(t, store.SetAuthInfo(ctx, setCmd))
+		require.NoError(t, store.SetAuthInfo(ctx, setCmd))
+
+		count := countEntries(t, sql, setCmd.AuthModule, setCmd.AuthId, setCmd.UserId)
+		require.Equal(t, 2, count)
+
+		err := store.UpdateAuthInfo(ctx, &login.UpdateAuthInfoCommand{
+			AuthModule: setCmd.AuthModule,
+			AuthId:     setCmd.AuthId,
+			UserId:     setCmd.UserId,
+			OAuthToken: &oauth2.Token{
+				AccessToken:  "atoken",
+				RefreshToken: "rtoken",
+				Expiry:       time.Now(),
+			},
+		})
+		require.NoError(t, err)
+
+		count = countEntries(t, sql, setCmd.AuthModule, setCmd.AuthId, setCmd.UserId)
+		require.Equal(t, 1, count)
+	})
+}
+
+func countEntries(t *testing.T, sql db.DB, authModule, authID string, userID int64) int {
+	var result int
+
+	err := sql.WithDbSession(context.Background(), func(sess *db.Session) error {
+		_, err := sess.SQL(
+			"SELECT COUNT(*) FROM user_auth WHERE auth_module = ? AND auth_id = ? AND user_id = ?",
+			authModule, authID, userID,
+		).Get(&result)
+		return err
+	})
+
+	require.NoError(t, err)
+	return result
+}