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- created a simple payment server endpoint to confirm payment (moved logic from client to server) (ref: #22) - added e2e-assisting values to the selectors dictionary - placed these e2e-assisting properties into their corresponding elements on the checkout page
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| import { paymentIntentFakeStripeResponse } from './paymentIntentResponse'; | ||
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| //import stripeDefault from 'stripe'; | ||
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| //const stripe = stripeDefault(process.env.STRIPE_SK_KEY); | ||
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| const paymentIntent = paymentIntentFakeStripeResponse; | ||
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| export const postPaymentIntentHandler = (req, res) => { | ||
| const { items } = req.body; | ||
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| // Create a PaymentIntent with the order amount and currency | ||
| // await stripe.paymentIntents.create({ | ||
| // amount: calculateOrderAmount(items), | ||
| // currency: "usd" | ||
| // }); | ||
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| console.log('[paymentIntent]', paymentIntent); | ||
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| res.send({ | ||
| clientSecret: paymentIntent.client_secret, | ||
| amount: calculateOrderAmount(items) | ||
| }); | ||
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| }; | ||
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| export const postPaymentConfirmHandler = (req, res) => { | ||
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| const [ err, clientSecret, card ] = safelyDestructure(req.body, | ||
| ({ | ||
| clientSecret, | ||
| paymentMethod: { | ||
| card | ||
| } | ||
| }) => ([ clientSecret, card ])); | ||
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| if (err) { | ||
| console.log(err); | ||
| return res.status(400).json({ error: { message: 'invalid parameters in the request' } }); | ||
| } | ||
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| console.log('[stripe-ish.confirmCardPayment]', clientSecret, card); | ||
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| if (clientSecret !== paymentIntent.client_secret) { | ||
| console.log('payment intent client secret mismatch'); | ||
| return res.status(400).json({ error: { message: 'payment intent client secret mismatch' } }); | ||
| } | ||
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| const aGeneralCCCardNumberPattern = /^(?:4[0-9]{12}(?:[0-9]{3})?|[25][1-7][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\d{3})\d{11})$/; | ||
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| if (!aGeneralCCCardNumberPattern.test(card?.card_number ?? '')) { | ||
| return res.status(400).json({ error: { message: 'Invalid card number' }, errors: { card_number: 'Invalid' } }); | ||
| } | ||
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| if (!card?.exp_year || !card?.exp_month) { | ||
| return res.json({ | ||
| error: { message: 'Expiration (MM/YY) is required' }, errors: { | ||
| ...(!card?.exp_year ? { exp_year: 'Required' } : {}), | ||
| ...(!card?.exp_month ? { exp_month: 'Required' } : {}) | ||
| } | ||
| }).status(400); | ||
| } | ||
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| if ((Number(card?.exp_year ?? '00') < (new Date().getFullYear() % 100)) || ( | ||
| (Number(card?.exp_year ?? '00') === (new Date().getFullYear() % 100)) && | ||
| (Number(card?.exp_month ?? '00') < (new Date().getMonth() % 12 + 1)) | ||
| )) { | ||
| return res.json({ | ||
| error: { message: 'Card is expired.' }, | ||
| errors: { exp_month: 'Invalid', exp_year: 'Invalid' } | ||
| }).status(400); | ||
| } | ||
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| if (!card?.cvv) { | ||
| return res.json({ error: { message: 'CVV is required' }, errors: { cvv: 'Required' } }).status(400); | ||
| } | ||
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| // 4242 4242 4242 4242 - Payment succeeds | ||
| // 4000 0025 0000 3155 - Payment requires authentication | ||
| // 4000 0000 0000 9995 - Payment is declined | ||
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| if (/^4242\s*4242\s*4242\s*4242$/.test(card?.card_number ?? '')) { | ||
| return res.status(200).json({ success: true }); | ||
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| } else if (/^4000\s*0025\s*0000\s*3155$/.test(card?.card_number ?? '')) { | ||
| const isOdd = (new Date().getTime() % 2) === 0; | ||
| return setTimeout(() => { | ||
| if (isOdd) { | ||
| return res.json({ | ||
| error: { message: 'Payment requires authentication. The odds now are for simulating an error. Try again for successful payment.' }, | ||
| errors: { card_number: 'Bank requested authentication.' } | ||
| }).status(400); | ||
| } else { | ||
| return res.status(200).json({ success: true }); | ||
| } | ||
| }, 3500); | ||
| } else if (/^4000\s*0000\s*0000\s*9995$/.test(card?.card_number ?? '')) { | ||
| return setTimeout(() => { | ||
| return res.status(400).json({ error: { message: 'Payment is declined' } }); | ||
| }, 2000); | ||
| } else { | ||
| return setTimeout(() => { | ||
| return res.status(200).json({ success: true }); | ||
| }, 1000); | ||
| } | ||
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| }; | ||
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| function safelyDestructure(source, destructor) { | ||
| try { | ||
| return [ null, ...destructor(source) ]; | ||
| } catch (err) { | ||
| return [ err ]; | ||
| } | ||
| } | ||
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| const calculateOrderAmount = items => { | ||
| // Replace this constant with a calculation of the order's amount | ||
| // Calculate the order total on the server to prevent | ||
| // people from directly manipulating the amount on the client | ||
| console.log(`[calculateOrderAmount]`, JSON.stringify(items, null, 2)); | ||
| return 1400; | ||
| }; |
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