iReceipt

Generate Taiwan's electronic receipt including QR code, bar code, and XML for National Taxation Bureau. The spec. from National Taxation Bureau is trivial but very complicated and hard to read. iReceipt can save your life and time!!!

Installation

npm install ireceipt --save

Run in a Browser

Just leverage Webpack to bundle IReceipt to let IReceipt work in a browser.

Usage

import IReceipt from 'ireceipt';

const info = new IReceipt.ReceiptInfo(
        1234,
        new Date(),
        { id: '{{SELLER_ID}}', name: '{{SELLER_NAME}}' },
        { id: '{{BUYER_ID}}', name: '{{BUYER_NAME}}' },
        false
    ),
    items = [new IReceipt.Item('{{ITEM_DESCRIPTION}}', 3000, 1)],
    receipt = new IReceipt.Receipt(info, items),
    AESKey = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];

receipt
    .render(AESKey)
    .then(htmlString => {
        const win = window.open();
        win.document.body.innerHTML = htmlString;
    })
    .catch(err => {
        window.console.error('err', err);
    });

// toXmL
window.console.log(receipt.toXML());

// Taiwan Receipt Lottery
// The format of the list of winners:
// 53925591  10510LC60123189...
// 53925591  10510LC60122037...
const winnersList = IReceipt.Receipt.parseWinnersList('{{WINNERS_LIST}}');
window.console.log(receipt.isWinning(winnersList));

Receipt

The receipt JavaScript object. It owns a ReceiptInfo, Items and creates a Amount based on items.

constructor(info, items)

info ReceiptInfo
items array of Item

Member Methods

toXML() Receipt object to xml string.
generateBarCodeString() generate bar code string.
generateLeftQRCodeString(AESKey) generate left QR code string including the receipt's information. generateRightQRCodeString() generate right QR code string including information for all items.
renderRightQRCode() generate right QR code svg string. return Promise.
renderLeftQRCode(AESKey) generate left QR code svg string. return Promise.

AESKey the type is array (see the usage section) and the AES key is applied from National Taxation Bureau. More details: 取得電子發票QRCODE中AES加密金鑰

renderBarCode()generate bar code svg string. return Promise.
render(AESKey) render Taiwan's electronic receipt. return Promise.

AESKey refer to renderLeftQRCode(AESKey)

ReceiptInfo

Store the receipt information.

constructor(number, date, seller, buyer, type, carrier, donationID, orderno)

number receipt number
date receipt date
seller seller information, including id and name. ({ id: '{{SELLER_ID}}', name: '{{SELLER_NAME}}' })
buyer buyer information, including id and name. ({ id: '{{BUYER_ID}}', name: '{{BUYER_NAME}}' })
type receipt type (default 07)
carrier receipt carrier information, including id and type. ({id: '{{CARRIER_ID}}', type:'CARRIER_TYPE'})
donationID charity's love code (愛心碼)
orderno order number

Item

The product item buyed by buyer.

constructor(description, unitPrice, sequenceNumber, quantity, taxType)

description product item's description
unitPrice unit price for a product item
sequenceNumber sequence number
quantity quantity of product items (default 1)
taxType tax type (default TaxType.TAX)

Amount

Store the amount information.

constructor(taxItems, freeTaxItems, zeroTaxItems)

taxItems tax items
freeTaxItems free tax items
zeroTaxItems zero tax items

TaxType

Tax type enum.

{
    TAX: 1,
    ZERO_TAX: 2,
    FREE_TAX: 3,
    SPECIAL_TAX: 4,
    COMPOUND_TAX: 9
}

EncodeType

Encode type for QR code enum.

{
    BIG5: 0,
    UTF8: 1,
    BASE64: 3
}

Reference

• E-invoice Platform (財政部電子發票整合服務平台)
• 電子發票證明聯一維及二維條碼規格說明(V1.6)
• 電子發票資料交換標準文件與範例(V3.1.2)
• 取得電子發票QRCODE中AES加密金鑰

Author

Zheng-Xiang Ke, kf99916@gmail.com

Contributors

Sin-Fong Lyu, kingispeak@gmail.com

License

iReceipt is available under the MIT license. See the LICENSE file for more info.