Auth: Refresh OAuth access_token automatically using the refresh_token (#56076)

* Verify OAuth token expiration for oauth users in the ctx handler middleware

* Use refresh token to get a new access token

* Refactor oauth_token.go

* Add tests for the middleware changes

* Align other tests

* Add tests, wip

* Add more tests

* Add InvalidateOAuthTokens method

* Fix ExpiryDate update to default

* Invalidate OAuth tokens during logout

* Improve logout

* Add more comments

* Cleanup

* Fix import order

* Add error to HasOAuthEntry return values

* add dev debug logs

* Fix tests

Co-authored-by: jguer <joao.guerreiro@grafana.com>

pkg/services/query/query_test.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
 	"github.com/grafana/grafana/pkg/expr"
+	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -440,6 +441,18 @@ func (ts *fakeOAuthTokenService) IsOAuthPassThruEnabled(*datasources.DataSource)
 	return ts.passThruEnabled
 }
 
+func (ts *fakeOAuthTokenService) HasOAuthEntry(context.Context, *user.SignedInUser) (*models.UserAuth, bool, error) {
+	return nil, false, nil
+}
+
+func (ts *fakeOAuthTokenService) TryTokenRefresh(context.Context, *models.UserAuth) error {
+	return nil
+}
+
+func (ts *fakeOAuthTokenService) InvalidateOAuthTokens(context.Context, *models.UserAuth) error {
+	return nil
+}
+
 type fakeDataSourceCache struct {
 	ds *datasources.DataSource
 }