From 332471b6ebcb171263ece0acd65c105690a0bcc9 Mon Sep 17 00:00:00 2001
From: DaevMithran <daevmithran1999@gmail.com>
Date: Mon, 23 Sep 2024 13:23:14 +0530
Subject: [PATCH] feat: Add resource connector in credential issuance

---
 src/services/api/credentials.ts     | 21 ++++++++++--
 src/services/connectors/resource.ts | 51 +++++++++++++++++++++++++++++
 src/types/credential.ts             |  6 ++++
 src/types/swagger-api-types.ts      |  5 +++
 4 files changed, 80 insertions(+), 3 deletions(-)
 create mode 100644 src/services/connectors/resource.ts

diff --git a/src/services/api/credentials.ts b/src/services/api/credentials.ts
index 794e3ceb..af7e1d15 100644
--- a/src/services/api/credentials.ts
+++ b/src/services/api/credentials.ts
@@ -1,12 +1,12 @@
 import type { CredentialPayload, VerifiableCredential } from '@veramo/core';
-
 import { VC_CONTEXT, VC_TYPE } from '../../types/constants.js';
-import type { CredentialRequest } from '../../types/credential.js';
+import { CredentialConnectors, type CredentialRequest } from '../../types/credential.js';
 import { IdentityServiceStrategySetup } from '../identity/index.js';
 import { v4 } from 'uuid';
 import * as dotenv from 'dotenv';
 import type { CustomerEntity } from '../../database/entities/customer.entity.js';
 import { VeridaDIDValidator } from '../../controllers/validator/did.js';
+import { ResourceConnector } from '../connectors/resource.js';
 dotenv.config();
 
 const { ENABLE_VERIDA_CONNECTOR } = process.env;
@@ -27,6 +27,7 @@ export class Credentials {
 			credentialStatus,
 			'@context': context,
 			format,
+			connector,
 			...additionalData
 		} = request;
 
@@ -54,7 +55,12 @@ export class Credentials {
 		).agent.createCredential(credential, format, statusOptions, customer);
 
 		const isVeridaDid = new VeridaDIDValidator().validate(subjectDid);
-		if (ENABLE_VERIDA_CONNECTOR === 'true' && isVeridaDid.valid && isVeridaDid.namespace) {
+		if (
+			ENABLE_VERIDA_CONNECTOR === 'true' &&
+			connector === CredentialConnectors.Verida &&
+			isVeridaDid.valid &&
+			isVeridaDid.namespace
+		) {
 			if (!credentialSchema) throw new Error('Credential schema is required');
 
 			// dynamic import to avoid circular dependency
@@ -69,6 +75,15 @@ export class Credentials {
 				credentialSchema,
 				credentialSummary
 			);
+		} else if (connector && connector === CredentialConnectors.Resource) {
+			await ResourceConnector.instance.sendCredential(
+				customer,
+				issuerDid,
+				verifiable_credential,
+				credentialName || v4(),
+				type ? type[0] : 'Verifiable Credential',
+				v4()
+			);
 		}
 		return verifiable_credential;
 	}
diff --git a/src/services/connectors/resource.ts b/src/services/connectors/resource.ts
new file mode 100644
index 00000000..993ed892
--- /dev/null
+++ b/src/services/connectors/resource.ts
@@ -0,0 +1,51 @@
+import * as dotenv from 'dotenv';
+import type { VerifiableCredential } from '@veramo/core';
+import { IdentityServiceStrategySetup } from '../identity';
+import type { AlternativeUri, MsgCreateResourcePayload } from '@cheqd/ts-proto/cheqd/resource/v2';
+import { v4 } from 'uuid';
+import { fromString } from 'uint8arrays';
+import type { CustomerEntity } from '../../database/entities/customer.entity';
+dotenv.config();
+
+/**
+ * Helper class for the Verida protocol.
+ *
+ * Run the init method before running any other method.
+ */
+export class ResourceConnector {
+	static instance = new ResourceConnector();
+
+	/**
+	 * Send a Verifiable Credential to a DID via the Verida protocol.
+	 *
+	 * @param recipientDid  The DID of the recipient.
+	 * @param messageSubject The subject of the message in which the Credential will be sent to the recipient (similar to an email subject).
+	 * @param credential The credential itself.
+	 * @param credentialName The name of the credential. For instance, will be displayed in the Verida Wallet UI.
+	 * @param credentialSummary A summary of the credential. For instance, will be displayed in the Verida Wallet UI.
+	 */
+	async sendCredential(
+		customer: CustomerEntity,
+		recipientDid: string,
+		credential: VerifiableCredential,
+		credentialName: string,
+		resourceType: string,
+		resourceVersion: string,
+		alsoKnownAs?: AlternativeUri[]
+	) {
+		// Get strategy e.g. postgres or local
+		const identityServiceStrategySetup = new IdentityServiceStrategySetup(customer.customerId);
+
+		let resourcePayload: Partial<MsgCreateResourcePayload> = {};
+		resourcePayload = {
+			collectionId: recipientDid.split(':').pop(),
+			id: v4(),
+			name: credentialName,
+			resourceType,
+			data: fromString(credential, 'utf-8'),
+			version: resourceVersion,
+			alsoKnownAs,
+		};
+		await identityServiceStrategySetup.agent.createResource(recipientDid.split(':')[2], resourcePayload, customer);
+	}
+}
diff --git a/src/types/credential.ts b/src/types/credential.ts
index 76dc5a0b..ce180b26 100644
--- a/src/types/credential.ts
+++ b/src/types/credential.ts
@@ -11,6 +11,11 @@ import type {
 } from '@cheqd/did-provider-cheqd';
 import type { VerificationOptions } from './shared.js';
 
+export enum CredentialConnectors {
+	Verida,
+	Resource,
+}
+
 export interface CredentialRequest {
 	subjectDid: string;
 	attributes: Record<string, unknown>;
@@ -26,6 +31,7 @@ export interface CredentialRequest {
 	termsOfUse?: AdditionalData | AdditionalData[];
 	refreshService?: AdditionalData | AdditionalData[];
 	evidence?: AdditionalData | AdditionalData[];
+	connector?: CredentialConnectors;
 
 	[x: string]: any;
 }
diff --git a/src/types/swagger-api-types.ts b/src/types/swagger-api-types.ts
index 95640e74..63bfae10 100644
--- a/src/types/swagger-api-types.ts
+++ b/src/types/swagger-api-types.ts
@@ -130,6 +130,11 @@
  *                documentPresence: Physical,
  *                licenseNumber: 123AB4567
  *              }
+ *       connector:
+ *         type: string
+ *         enum:
+ *           - verida
+ *           - resource
  *       required:
  *         - issuerDid
  *         - subjectDid