Lấy Chữ Ký từ PDF trong Node.js SDK

    import credentials from "../../../Credentials/credentials.json"  with { type: "json" };
    import fs from 'node:fs/promises';
    import path from 'node:path';
    import { PdfApi } from "../../src/api/api.js";


    const configParams = {
        LOCAL_FOLDER: "C:\\Samples\\",
        PDF_DOCUMENT_NAME: "sample-signed.pdf",
    }

    const pdfApi = new PdfApi(credentials.id, credentials.key);

    const pdfSignatures = {
        async uploadDocument () {
            const fileNamePath = path.join(configParams.LOCAL_FOLDER, configParams.PDF_DOCUMENT_NAME);
            const pdfFileData = await fs.readFile(fileNamePath);
            await pdfApi.uploadFile(configParams.PDF_DOCUMENT_NAME, pdfFileData);
            console.log("File '" + configParams.PDF_DOCUMENT_NAME + "' successfully uploaded!");
        },

        showSignatureFieldsArray(fields)
        {
            if (fields.list.length > 0)
                fields.list.forEach(function(item) {
                    console.log("Signature => value: '" + item.signature.contact + "'");
                });
            else
                console.log("Signature fileds is empty!");
        },

        async getSignatureFields () {
            if (pdfApi)
            {
                const response = await pdfApi.getDocumentSignatureFields(configParams.PDF_DOCUMENT_NAME);

                if (response.body.code == 200 && response.body.fields) {
                    console.log("getSignatureFields(): Signature fields successfully extracted in to the '" + configParams.PDF_DOCUMENT_NAME + "' documen:")
                    this.showSignatureFieldsArray(response.body.fields);
                }
                else
                    console.error("getSignatures(): Failed to extract signatures in the document. Response code: " + response.body.code);
            }
        },
    }

    async function main() {
        try {
            await pdfSignatures.uploadDocument();
            await pdfSignatures.getSignatureFields();
        } catch (error) {
            console.error("Error:", error.message);
        }
    }