A small project that collects various nice things to get started with Go Web Development.
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go-web-starter-kit/static/js/paypal_app.js

113 lines
4.1 KiB

const paypalButtons = window.paypal.Buttons({
style: {
shape: "rect",
layout: "vertical",
color: "gold",
label: "pay",
},
message: {
amount: 100,
},
async createOrder() {
try {
const response = await fetch("/api/paypal/order", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
// use the "body" param to optionally pass additional order information
// like product ids and quantities
// body: JSON.stringify({
// cart: [
// {
// id: "YOUR_PRODUCT_ID",
// quantity: "YOUR_PRODUCT_QUANTITY",
// },
// ],
// }),
});
const orderData = await response.json();
if (orderData.id) {
return orderData.id;
}
const errorDetail = orderData?.details?.[0];
const errorMessage = errorDetail
? `${errorDetail.issue} ${errorDetail.description} (${orderData.debug_id})`
: JSON.stringify(orderData);
throw new Error(errorMessage);
} catch (error) {
console.error(error);
// resultMessage(`Could not initiate PayPal Checkout...<br><br>${error}`);
}
},
async onApprove(data, actions) {
try {
const response = await fetch(
`/api/paypal/order/${data.orderID}/capture`,
{
method: "POST",
headers: {
"Content-Type": "application/json",
},
}
);
const orderData = await response.json();
// Three cases to handle:
// (1) Recoverable INSTRUMENT_DECLINED -> call actions.restart()
// (2) Other non-recoverable errors -> Show a failure message
// (3) Successful transaction -> Show confirmation or thank you message
const errorDetail = orderData?.details?.[0];
if (errorDetail?.issue === "INSTRUMENT_DECLINED") {
// (1) Recoverable INSTRUMENT_DECLINED -> call actions.restart()
// recoverable state, per
// https://developer.paypal.com/docs/checkout/standard/customize/handle-funding-failures/
return actions.restart();
} else if (errorDetail) {
// (2) Other non-recoverable errors -> Show a failure message
throw new Error(
`${errorDetail.description} (${orderData.debug_id})`
);
} else if (!orderData.purchase_units) {
throw new Error(JSON.stringify(orderData));
} else {
// (3) Successful transaction -> Show confirmation or thank you message
// Or go to another URL: actions.redirect('thank_you.html');
const transaction =
orderData?.purchase_units?.[0]?.payments?.captures?.[0] ||
orderData?.purchase_units?.[0]?.payments
?.authorizations?.[0];
resultMessage(
`Transaction ${transaction.status}: ${transaction.id}<br>
<br>See console for all available details`
);
console.log(
"Capture result",
orderData,
JSON.stringify(orderData, null, 2)
);
}
} catch (error) {
console.error(error);
resultMessage(
`Sorry, your transaction could not be processed...<br><br>${error}`
);
}
},
});
paypalButtons.render("#paypal-button-container");
// Example function to show a result to the user. Your site's UI library can be used instead.
function resultMessage(message) {
const container = document.querySelector("#result-message");
container.innerHTML = message;
}