paystack.js

import axios from 'axios';

export const initializePayment = (email, name, amount) => {
  let promise = new Promise(function (resolve, reject) {
    axios({
      method: 'post',
      url: 'https://api.paystack.co/transaction/initialize',
      headers: {
        Authorization: `Bearer ${process.env.NEXT_PUBLIC_PAYSTACK_API_SECRET}`,
        'Content-Type': 'application/json',
      },
      data: {
        email: email,
        amount: amount,
        currency: 'NGN',
        callback_url: 'http://127.0.0.1:3000/success',
        metadata: {
          custom_fields: [
            {
              display_name: 'Name',
              variable_name: 'name',
              value: name,
            },
          ],
        },
      },
    })
      .then((res) => {
        resolve(res.data.data.authorization_url);
      })
      .catch((err) => {
        reject(err);
      });
  });

  return promise;
};