fix: remove idps from org login policy after reset (#4327)

internal/query/projection/idp_login_policy_link.go

@@ -70,6 +70,10 @@ func (p *idpLoginPolicyLinkProjection) reducers() []handler.AggregateReducer {
 					Event:  org.LoginPolicyIDPProviderRemovedEventType,
 					Reduce: p.reduceRemoved,
 				},
+				{
+					Event:  org.LoginPolicyRemovedEventType,
+					Reduce: p.reducePolicyRemoved,
+				},
 				{
 					Event:  org.OrgRemovedEventType,
 					Reduce: p.reduceOrgRemoved,
@@ -206,3 +210,15 @@ func (p *idpLoginPolicyLinkProjection) reduceOrgRemoved(event eventstore.Event)
 		},
 	), nil
 }
+
+func (p *idpLoginPolicyLinkProjection) reducePolicyRemoved(event eventstore.Event) (*handler.Statement, error) {
+	e, ok := event.(*org.LoginPolicyRemovedEvent)
+	if !ok {
+		return nil, errors.ThrowInvalidArgumentf(nil, "HANDL-SF3dg", "reduce.wrong.event.type %s", org.LoginPolicyRemovedEventType)
+	}
+	return crdb.NewDeleteStatement(e,
+		[]handler.Condition{
+			handler.NewCond(IDPLoginPolicyLinkAggregateIDCol, e.Aggregate().ID),
+		},
+	), nil
+}

internal/query/projection/idp_login_policy_link_test.go

@@ -247,6 +247,33 @@ func TestIDPLoginPolicyLinkProjection_reduces(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "reducePolicyRemoved",
+			args: args{
+				event: getEvent(testEvent(
+					repository.EventType(org.LoginPolicyRemovedEventType),
+					org.AggregateType,
+					nil,
+				), org.LoginPolicyRemovedEventMapper),
+			},
+			reduce: (&idpLoginPolicyLinkProjection{}).reducePolicyRemoved,
+			want: wantReduce{
+				aggregateType:    org.AggregateType,
+				sequence:         15,
+				previousSequence: 10,
+				projection:       IDPLoginPolicyLinkTable,
+				executer: &testExecuter{
+					executions: []execution{
+						{
+							expectedStmt: "DELETE FROM projections.idp_login_policy_links3 WHERE (aggregate_id = $1)",
+							expectedArgs: []interface{}{
+								"agg-id",
+							},
+						},
+					},
+				},
+			},
+		},
 		{
 			name: "org.IDPConfigRemovedEvent",
 			args: args{