Trinsic Credential with File Attachment

index.js

import {FieldType, TrinsicService} from "@trinsic/trinsic";
import fs from "fs";
import https from "https";

let trinsic = new TrinsicService();
trinsic.options.authToken = process.env.TRINSIC_AUTH_TOKEN;

//Just doing this dance so that I can detect the ecosystem and not keep re-creating the template
const info = await trinsic.provider().ecosystemInfo();

const templateName = "graduation-certificate"
let templateId = `urn:template:${info.ecosystem.name}:${templateName}`;
const templateResponse = await trinsic.template().get({id: templateId});
if(templateResponse === undefined || templateResponse.template === undefined) {
    console.log(`Did not find template with id ${templateId} - creating it now...`);
    const createTemplate = await trinsic.template().create({
        name: templateName,
        fields: [
            {
                description: "Name",
                type: FieldType.STRING,
                optional: false
            },
            {
                description: "Certificate",
                type: FieldType.URI,
                optional: false
            }
        ]
    });

    templateId = createTemplate.data?.id;
    if(templateId === undefined) {
        throw new Error("Template ID not found");
    }
    console.log(`Created template with id ${templateId}`);
}

const fileBytes = fs.readFileSync('attachment.pdf');
const fileMimeType = "application/pdf";


console.log("Uploading attachment...");
const uploadResponse = await trinsic.fileManagement().uploadFile(
    {
        contents: fileBytes,
        mimeType: fileMimeType
    }
);
const fileUrl = uploadResponse.uploadedFile?.url;
if(fileUrl === undefined){
    throw new Error("Attachment not uploaded");
}
console.log("Uploaded attachment, issuing credential...", fileUrl);

const credentialResponse = await trinsic.credential().issueFromTemplate({templateId: templateId, saveCopy: true, valuesJson: JSON.stringify({Name: "John Doe", Certificate: fileUrl})});

const credential = JSON.parse(credentialResponse.documentJson);
console.log("Created credential", credential);

//You can choose to download credential.credentialSubject.Certificate to a file and verify the hash link.

package.json

{
  "name": "file-credential",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "type": "module",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@trinsic/trinsic": "^1.10.0"
  }
}