fix: check grant types and add refresh token to discovery

pkg/op/mock/client.mock.go

@@ -120,6 +120,20 @@ func (mr *MockClientMockRecorder) GetID() *gomock.Call {
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetID", reflect.TypeOf((*MockClient)(nil).GetID))
 }
 
+// GrantTypes mocks base method.
+func (m *MockClient) GrantTypes() []oidc.GrantType {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GrantTypes")
+	ret0, _ := ret[0].([]oidc.GrantType)
+	return ret0
+}
+
+// GrantTypes indicates an expected call of GrantTypes.
+func (mr *MockClientMockRecorder) GrantTypes() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GrantTypes", reflect.TypeOf((*MockClient)(nil).GrantTypes))
+}
+
 // IDTokenLifetime mocks base method.
 func (m *MockClient) IDTokenLifetime() time.Duration {
 	m.ctrl.T.Helper()

pkg/op/mock/configuration.mock.go

@@ -118,6 +118,20 @@ func (mr *MockConfigurationMockRecorder) GrantTypeJWTAuthorizationSupported() *g
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GrantTypeJWTAuthorizationSupported", reflect.TypeOf((*MockConfiguration)(nil).GrantTypeJWTAuthorizationSupported))
 }
 
+// GrantTypeRefreshTokenSupported mocks base method.
+func (m *MockConfiguration) GrantTypeRefreshTokenSupported() bool {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GrantTypeRefreshTokenSupported")
+	ret0, _ := ret[0].(bool)
+	return ret0
+}
+
+// GrantTypeRefreshTokenSupported indicates an expected call of GrantTypeRefreshTokenSupported.
+func (mr *MockConfigurationMockRecorder) GrantTypeRefreshTokenSupported() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GrantTypeRefreshTokenSupported", reflect.TypeOf((*MockConfiguration)(nil).GrantTypeRefreshTokenSupported))
+}
+
 // GrantTypeTokenExchangeSupported mocks base method.
 func (m *MockConfiguration) GrantTypeTokenExchangeSupported() bool {
 	m.ctrl.T.Helper()

pkg/op/mock/storage.mock.impl.go

@@ -107,6 +107,7 @@ type ConfClient struct {
 	authMethod      oidc.AuthMethod
 	accessTokenType op.AccessTokenType
 	responseTypes   []oidc.ResponseType
+	grantTypes      []oidc.GrantType
 	devMode         bool
 }
 
@@ -150,6 +151,9 @@ func (c *ConfClient) AccessTokenType() op.AccessTokenType {
 func (c *ConfClient) ResponseTypes() []oidc.ResponseType {
 	return c.responseTypes
 }
+func (c *ConfClient) GrantTypes() []oidc.GrantType {
+	return c.grantTypes
+}
 func (c *ConfClient) DevMode() bool {
 	return c.devMode
 }