Viettel S Invoice API Integration

This project provides a class ViettelSInvoice that allows interaction with the Viettel S Invoice API.

• Prerequisites
• Installation
• Usage
  • Preview Draft Invoice
  • Create Invoice
  • Get Invoice by Transaction UUID
  • Get Invoices by Date Range
  • Get Invoice File
  • Get Invoice Templates
• Exceptions
• License

Before using the Viettel S Invoice API, you will need:

• An active Viettel S Invoice account with a valid username and password.
• An API endpoint URL to connect to the Viettel S Invoice API.
• A basic understanding of how to interact with APIs.

npm install --save viettel-s-invoice

const viettelSInvoice = new ViettelSInvoice({
  username: 'your-username', // required
  password: 'your-password', // required
  apiEndPoint: 'https://api.viettel.vn', // optional
});

To preview a draft invoice, use the previewDraftInvoice method:

viettelSInvoice.previewDraftInvoice(invoice)
  .then(response => console.log(response))
  .catch(error => console.error(error));

• invoice: The draft invoice data to preview.

To create an invoice, use the createInvoice method:

viettelSInvoice.createInvoice(invoice)
  .then(response => console.log(response))
  .catch(error => console.error(error));

• invoice: The data for creating the invoice.

To retrieve an invoice by its transaction UUID, use the getInvoiceByTransactionUuid method:

const transactionUuid = '7a9f9e2a-d28f-4bef-a9d0-d91607453f70';

viettelSInvoice.getInvoiceByTransactionUuid(transactionUuid)
  .then(response => console.log(response))
  .catch(error => console.error(error));

• transactionUuid: The unique identifier of the transaction associated with the invoice.

To get invoices within a specified date range, use the getInvoicesByDateRange method:

const fromDate = '01/01/2024';
const toDate = '31/01/2024';

viettelSInvoice.getInvoicesByDateRange(fromDate, toDate)
  .then(response => console.log(response))
  .catch(error => console.error(error));

• fromDate: The start date of the range (format: DD/MM/YYYY).
• toDate: The end date of the range (format: DD/MM/YYYY).

• To retrieve an invoice file, use the getInvoiceFile method:

viettelSInvoice.getInvoiceFile({ invoiceNo, templateCode, fileType })
  .then(response => console.log(response))
  .catch(error => console.log(error));

• invoiceNo: The invoice number.
• templateCode: The template code for the invoice.
• fileType: The file type (e.g., PDF, ZIP).

• To retrieve invoice templates code, use the getInvoiceTemplates method:

const invoiceType = '01BLP'

viettelSInvoice.getInvoiceTemplates(invoiceType)
  .then(response => console.log(response))
  .catch(error => console.log(error));

The following exceptions are handled by the ViettelSInvoice class:

• ViettelSInvoiceLoginException: Thrown if login fails.
• ViettelSInvoiceCreateInvoiceException: Thrown if invoice creation fails.
• ViettelSInvoicePreviewDraftInvoiceException: Thrown if reviewing a draft invoice fails.
• ViettelSInvoiceGetInvoiceException: Thrown if retrieving an invoice fails.
• ViettelSInvoiceGetInvoicesException: Thrown if retrieving invoices by date range fails.
• ViettelSInvoiceGetInvoiceFileException: Thrown if retrieving an invoice file fails.
• ViettelSInvoiceGetTemplatesException: thrown if retrieving invoice templates fails
• Each exception includes a descriptive error message.

This project is licensed under the MIT License. See the LICENSE file for details.