const stripe = require('stripe')('sk_ycLkGc2cAaBDSCKkHiKVBeT71CMxd');

const endpoint = 'https://api.graph.cool/simple/v1/cj99zm6ye06sb01325ic751ww';

require('isomorphic-fetch');

const getPrice = itemId => {
  const query = `
    query SingleItem {
      Item(id: "${itemId}") {
        price
      }
    }
  `;

  return fetch(endpoint, {
    method: 'post',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({ query }),
  });
};

const createStripeCharge = (token, amount) =>
  stripe.charges.create({
    amount,
    currency: 'usd',
    description: `a test charge`,
    source: token,
  });

module.exports = function(event) {
  return new Promise((resolve, reject) => {
    // first find out the price of the item
    getPrice(event.data.itemId)
      .then(res => res.json())
      .then(res => {
        console.log(`Back with the price ${res.data.Item.price}!`);
        return createStripeCharge(event.data.token, res.data.Item.price);
      })
      .then(res => {
        console.log(`Back! charge ${res.id} for the amount ${res.amount}`);
        event.data.charge = res.id;
        event.data.amount = res.amount;
        resolve(event);
      })
      .catch(err => {
        reject(err);
      });
  });
};