import {
  Buyer,
  Client,
  Invoice,
  Item,
  Seller,
  Currencies,
  Currency,
  Language,
  Languages,
  PaymentMethod,
  PaymentMethods,
  TaxSubject,
  TaxSubjects} from 'szamlazz.js'

const szamlazzClient = new Client({
  user: 'USERNAME',
  password: 'PASSWORD',
  eInvoice: false, // create e-invoice. optional, default: false
  requestInvoiceDownload: true, // downloads the issued pdf invoice. optional, default: false
  downloadedInvoiceCount: 1, // optional, default: 1
  responseVersion: 1 // optional, default: 1
  timeout: 1000 // optional, default: 0, request timeout in ms (0 = no timeout)
})

const szamlazzClient = new Client({
  authToken: 'SZAMLAAGENTKEY',
  eInvoice: false, // create e-invoice. optional, default: false
  requestInvoiceDownload: true, // downloads the issued pdf invoice. optional, default: false
  downloadedInvoiceCount: 1, // optional, default: 1
  responseVersion: 1 // optional, default: 1
  timeout: 0 // optional, default: 0, request timeout in ms (0 = no timeout)
})

let seller = new Seller({ // everyting is optional
  bank: {
    name: 'Test Bank <name>',
    accountNumber: '11111111-11111111-11111111'
  },
  email: {
    replyToAddress: '[email protected]',
    subject: 'Invoice email subject',
    message: 'This is an email message'
  },
  issuerName: ''
})

let buyer = new Buyer({
  name: 'Some Buyer Name ' + Math.random(),
  country: '',
  zip: '1234',
  city: 'City',
  address: 'Some street address',
  taxNumber: '12345678-1-42',
  postAddress: {
    name: 'Some Buyer Name',
    zip: '1234',
    city: 'City',
    address: 'Some street address'
  },
  issuerName: '',
  identifier: 1,
  phone: '',
  comment: ''
})

let soldItem1 = new Item({
  label: 'First item',
  quantity: 2,
  unit: 'qt',
  vat: 27, // can be a number or a special string
  netUnitPrice: 100.55, // calculates gross and net values from per item net
  comment: 'Ez egy árvíztűrő tükörfúrógép'
})

let soldItem2 = new Item({
  label: 'Second item',
  quantity: 5,
  unit: 'qt',
  vat: 27,
  grossUnitPrice: 1270 // calculates net and total values from per item gross
})

let invoice = new Invoice({
  paymentMethod: PaymentMethods.BankTransfer, // optional, default: BankTransfer
  currency: Currencies.Ft, // optional, default: Ft
  language: Languages.Hungarian, // optional, default: Hungarian
  seller: seller, // the seller, required
  buyer: buyer, // the buyer, required
  items: [ soldItem1, soldItem2 ], // the sold items, required
  prepaymentInvoice: false // prepayment/deposit invoice should be issued, optional, default: false
})

const result = await szamlazzClient.issueInvoice(invoice)
if (result.pdf) {
  // a Buffer with the pdf data is available if requestInvoiceDownload === true
}

const szamlazzClient = new Client({
  user: 'USERNAME',
  password: 'PASSWORD'
})

const invoice = await szamlazzClient.getInvoiceData({
  invoiceId: 'E-RNJLO-2019-1234', // invoice number
  orderNumber: '1234', // order number
  pdf: false // downloads the pdf invoice. optional, default: false
})

const szamlazzClient = new Client({
  user: 'USERNAME',
  password: 'PASSWORD'
})

const invoice = await szamlazzClient.reverseInvoice({
  invoiceId: 'E-RNJLO-2019-1234', // invoice number
  eInvoice: true,                 // create e-invoice
  requestInvoiceDownload: false,  // downloads the issued pdf invoice
})

{
  invoiceId: 'WXSKA-2020-00', // The id of the created reverse invoice
  netTotal: '1000',           // Total value of the reverse invoice excl. VAT
  grossTotal: '1270'          // Total value of the reverse invoice incl. VAT
  pdf: null                   // the PDF content as a Buffer if requestInvoiceDownload was true, otherwise undefined
}