feat: compose issuer

pkg/service/oidc4ci/composer.go

@@ -12,6 +12,7 @@ import (
 	"text/template"
 
 	"github.com/google/uuid"
+	util "github.com/trustbloc/did-go/doc/util/time"
 	"github.com/trustbloc/vc-go/verifiable"
 )
 
@@ -34,7 +35,10 @@ func (c *CredentialComposer) Compose(
 	}
 
 	if idTemplate := txCredentialConfiguration.CredentialComposeConfiguration.IDTemplate; idTemplate != "" {
-		id, err := c.renderRaw(idTemplate, c.baseParams(tx))
+		params := c.baseParams(tx)
+		params["CredentialID"] = credential.Contents().ID
+
+		id, err := c.renderRaw(idTemplate, params)
 		if err != nil {
 			return nil, err
 		}
@@ -43,7 +47,14 @@ func (c *CredentialComposer) Compose(
 	}
 
 	if txCredentialConfiguration.CredentialComposeConfiguration.OverrideIssuer {
-		credential = credential.WithModifiedIssuer(&verifiable.Issuer{ID: tx.DID})
+		issuer := credential.Contents().Issuer
+		if issuer == nil {
+			issuer = &verifiable.Issuer{}
+		}
+
+		issuer.ID = tx.DID
+
+		credential = credential.WithModifiedIssuer(issuer)
 	}
 
 	if txCredentialConfiguration.CredentialComposeConfiguration.OverrideSubjectDID {
@@ -57,6 +68,10 @@ func (c *CredentialComposer) Compose(
 		credential = credential.WithModifiedSubject(newSubjects)
 	}
 
+	if credential.Contents().Expired == nil && txCredentialConfiguration.CredentialExpiresAt != nil {
+		credential.SetCustomField("expirationDate", util.NewTime(*txCredentialConfiguration.CredentialExpiresAt))
+	}
+
 	return credential, nil
 }
 

pkg/service/oidc4ci/composer_test.go

@@ -3,8 +3,11 @@ package oidc4ci_test
 import (
 	"context"
 	"testing"
+	"time"
 
+	"github.com/samber/lo"
 	"github.com/stretchr/testify/assert"
+	util "github.com/trustbloc/did-go/doc/util/time"
 	"github.com/trustbloc/vc-go/verifiable"
 
 	"github.com/trustbloc/vcs/pkg/service/oidc4ci"
@@ -15,10 +18,16 @@ func TestComposer(t *testing.T) {
 		srv := oidc4ci.NewCredentialComposer()
 
 		cred, err := verifiable.CreateCredential(verifiable.CredentialContents{
+			Types: []string{"VerifiableCredential"},
+			Context: []string{
+				"https://www.w3.org/2018/credentials/v1",
+			},
 			Subject: []verifiable.Subject{{ID: "xxx:yyy"}},
 		}, verifiable.CustomFields{})
 		assert.NoError(t, err)
 
+		expectedExpiration := time.Now().UTC()
+
 		resp, err := srv.Compose(
 			context.TODO(),
 			cred,
@@ -34,6 +43,7 @@ func TestComposer(t *testing.T) {
 					OverrideIssuer:     true,
 					OverrideSubjectDID: true,
 				},
+				CredentialExpiresAt: &expectedExpiration,
 			},
 			&oidc4ci.PrepareCredentialRequest{
 				DID: "some-awesome-did",
@@ -43,9 +53,69 @@ func TestComposer(t *testing.T) {
 		assert.NoError(t, err)
 		assert.NotNil(t, resp)
 
+		credJSON, err := resp.MarshalAsJSONLD()
+		assert.NoError(t, err)
+
+		parsedCred, err := verifiable.ParseCredential(credJSON,
+			verifiable.WithCredDisableValidation(),
+			verifiable.WithDisabledProofCheck(),
+		)
+		assert.NoError(t, err)
+
 		assert.EqualValues(t, "hardcoded:some-awesome-id:suffix", resp.Contents().ID)
 		assert.EqualValues(t, "did:example:123", resp.Contents().Issuer.ID)
 		assert.EqualValues(t, "some-awesome-did", resp.Contents().Subject[0].ID)
+		assert.EqualValues(t, expectedExpiration, parsedCred.Contents().Expired.Time)
+	})
+
+	t.Run("success with prev-id", func(t *testing.T) {
+		srv := oidc4ci.NewCredentialComposer()
+
+		cred, err := verifiable.CreateCredential(verifiable.CredentialContents{
+			ID:      "some-id",
+			Expired: util.NewTime(time.Now()),
+			Issuer: &verifiable.Issuer{
+				ID: "did:example:123",
+				CustomFields: map[string]interface{}{
+					"key":  "value",
+					"name": "issuer",
+				},
+			},
+			Subject: []verifiable.Subject{{ID: "xxx:yyy"}},
+		}, verifiable.CustomFields{})
+		assert.NoError(t, err)
+
+		resp, err := srv.Compose(
+			context.TODO(),
+			cred,
+			&oidc4ci.Transaction{
+				ID: "some-awesome-id",
+				TransactionData: oidc4ci.TransactionData{
+					DID: "did:example:123",
+				},
+			},
+			&oidc4ci.TxCredentialConfiguration{
+				CredentialComposeConfiguration: &oidc4ci.CredentialComposeConfiguration{
+					IDTemplate:         "{{.CredentialID}}:suffix",
+					OverrideIssuer:     true,
+					OverrideSubjectDID: true,
+				},
+				CredentialExpiresAt: lo.ToPtr(time.Now()),
+			},
+			&oidc4ci.PrepareCredentialRequest{
+				DID: "some-awesome-did",
+			},
+		)
+
+		assert.NoError(t, err)
+		assert.NotNil(t, resp)
+
+		assert.EqualValues(t, "some-id:suffix", resp.Contents().ID)
+		assert.EqualValues(t, "did:example:123", resp.Contents().Issuer.ID)
+		assert.EqualValues(t, "value", resp.Contents().Issuer.CustomFields["key"])
+		assert.EqualValues(t, "issuer", resp.Contents().Issuer.CustomFields["name"])
+
+		assert.EqualValues(t, "some-awesome-did", resp.Contents().Subject[0].ID)
 	})
 
 	t.Run("invalid template", func(t *testing.T) {