Cocos Creator Telegram Payments: Send an Invoice with Bot API

This example sends an invoice through the Telegram Bot API and then opens the bot chat. You need a bot token, payment-provider token, recipient chat ID, product information, and currency.

interface InvoiceData {
  chat_id: string;
  title: string;
  description: string;
  payload: string;
  provider_token: string;
  start_parameter: string;
  currency: string;
  prices: string;
}

const apiUrl = `https://api.telegram.org/bot${BOT_TOKEN}/sendInvoice`;
const invoice: InvoiceData = {
  chat_id: CHAT_ID,
  title: 'Product Title',
  description: 'Product Description',
  payload: 'UniquePayload',
  provider_token: PROVIDER_TOKEN,
  start_parameter: 'start',
  currency: 'USD',
  prices: JSON.stringify([{ label: 'Product', amount: 1000 }]),
};

async function openBot() {
  const response = await fetch(apiUrl, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(invoice),
  });
  const data = await response.json();
  if (data.ok) window.location.href = `https://t.me/${BOT_USERNAME}`;
  else console.error('Failed to send invoice:', data);
}

Do not ship a bot token in public client code. In production, send invoice requests through your own authenticated server.