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feat: adding boltcard for the POS behind a beta flag
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Nicolas Burtey
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Feb 21, 2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,222 @@ | ||
| import React, { useState, useEffect } from "react" | ||
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| import { getParams } from "js-lnurl" | ||
| import Image from "next/image" | ||
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| import styles from "./parse-payment.module.css" | ||
|
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| type Props = { | ||
| paymentRequest?: string | undefined | ||
| } | ||
|
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| // TODO: refine the interface | ||
| interface NFCRecord { | ||
| data?: ArrayBuffer | DataView | ||
| encoding?: string | ||
| } | ||
|
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| function NFCComponent({ paymentRequest }: Props) { | ||
| const [hasNFCPermission, setHasNFCPermission] = useState(false) | ||
| const [nfcMessage, setNfcMessage] = useState("") | ||
|
|
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| const decodeNDEFRecord = (record: NFCRecord) => { | ||
| if (!record.data) { | ||
| console.log("No data found") | ||
| return "" | ||
| } | ||
|
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| let buffer: ArrayBuffer | ||
| if (record.data instanceof ArrayBuffer) { | ||
| buffer = record.data | ||
| } else if (record.data instanceof DataView) { | ||
| buffer = record.data.buffer | ||
| } else { | ||
| console.log("Data type not supported") | ||
| return "" | ||
| } | ||
|
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| const decoder = new TextDecoder(record.encoding || "utf-8") | ||
| return decoder.decode(buffer) | ||
| } | ||
|
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| const activateNfcScan = async () => { | ||
| await handleNFCScan() | ||
| alert( | ||
| "Boltcard is now active. There will be no need to active it again. Please tap your card to redeem the payment", | ||
| ) | ||
| } | ||
|
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| const handleNFCScan = async () => { | ||
| if (!("NDEFReader" in window)) { | ||
| console.error("NFC is not supported") | ||
| return | ||
| } | ||
|
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| console.log("NFC is supported, start reading") | ||
|
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| const ndef = new NDEFReader() | ||
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| try { | ||
| await ndef.scan() | ||
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| console.log("NFC scan started successfully.") | ||
|
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| ndef.onreading = (event) => { | ||
| console.log("NFC tag read.") | ||
| console.log(event.message) | ||
|
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| const record = event.message.records[0] | ||
| const text = decodeNDEFRecord(record) | ||
|
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| setNfcMessage(text) | ||
| } | ||
|
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| ndef.onreadingerror = () => { | ||
| console.error("Cannot read data from the NFC tag. Try another one?") | ||
| } | ||
| } catch (error) { | ||
| console.error(`Error! Scan failed to start: ${error}.`) | ||
| } | ||
| } | ||
|
|
||
| useEffect(() => { | ||
| ;(async () => { | ||
| if (!("permissions" in navigator)) { | ||
| console.error("Permissions API not supported") | ||
| return | ||
| } | ||
|
|
||
| let result: PermissionStatus | ||
| try { | ||
| /* eslint @typescript-eslint/ban-ts-comment: "off" */ | ||
| // @ts-ignore-next-line | ||
| result = await navigator.permissions.query({ name: "nfc" }) | ||
| } catch (err) { | ||
| console.error("Error querying NFC permission", err) | ||
| return | ||
| } | ||
|
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| console.log("result permission query", result) | ||
|
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| if (result.state === "granted") { | ||
| setHasNFCPermission(true) | ||
| } else { | ||
| setHasNFCPermission(false) | ||
| } | ||
|
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| result.onchange = () => { | ||
| if (result.state === "granted") { | ||
| setHasNFCPermission(true) | ||
| } else { | ||
| setHasNFCPermission(false) | ||
| } | ||
| } | ||
| })() | ||
| }, [setHasNFCPermission]) | ||
|
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| React.useEffect(() => { | ||
| console.log("hasNFCPermission", hasNFCPermission) | ||
|
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| if (hasNFCPermission) { | ||
| handleNFCScan() | ||
| } | ||
|
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| // handleNFCScan leads to an infinite loop | ||
| // eslint-disable-next-line react-hooks/exhaustive-deps | ||
| }, [hasNFCPermission]) | ||
|
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| React.useEffect(() => { | ||
| ;(async () => { | ||
| if (!nfcMessage) { | ||
| return | ||
| } | ||
|
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| if (!nfcMessage.toLowerCase().includes("lnurl")) { | ||
| alert("Not a compatible boltcard") | ||
| return | ||
| } | ||
|
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| if (!paymentRequest) { | ||
| alert("add an amount and create an invoice before scanning the card") | ||
| return | ||
| } | ||
|
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| const sound = new Audio("/payment-sound.mp3") | ||
| sound | ||
| .play() | ||
| .then(() => { | ||
| console.log("Playback started successfully") | ||
| }) | ||
| .catch((error) => { | ||
| console.error("Playback failed", error) | ||
| }) | ||
|
|
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| const lnurlParams = await getParams(nfcMessage) | ||
|
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| if (!("tag" in lnurlParams && lnurlParams.tag === "withdrawRequest")) { | ||
| console.error("not a lnurl withdraw tag") | ||
| return | ||
| } | ||
|
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| const { callback, k1 } = lnurlParams | ||
|
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| const urlObject = new URL(callback) | ||
| const searchParams = urlObject.searchParams | ||
| searchParams.set("k1", k1) | ||
| searchParams.set("pr", paymentRequest) | ||
|
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| const url = urlObject.toString() | ||
|
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| const result = await fetch(url) | ||
| if (result.ok) { | ||
| const lnurlResponse = await result.json() | ||
| if (lnurlResponse?.status?.toLowerCase() !== "ok") { | ||
| console.error(lnurlResponse, "error with redeeming") | ||
| } | ||
|
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| console.log("payment successful") | ||
| } else { | ||
| let errorMessage = "" | ||
| try { | ||
| const decoded = await result.json() | ||
| if (decoded.reason) { | ||
| errorMessage += decoded.reason | ||
| } | ||
| if (decoded.message) { | ||
| errorMessage += decoded.message | ||
| } | ||
| } finally { | ||
| let message = `Error processing payment.\n\nHTTP error code: ${result.status}` | ||
| if (errorMessage) { | ||
| message += `\n\nError message: ${errorMessage}` | ||
| } | ||
| alert(message) | ||
| } | ||
| } | ||
| })() | ||
| }, [nfcMessage, paymentRequest]) | ||
|
|
||
| return ( | ||
| <div> | ||
| {!hasNFCPermission && ( | ||
| <div className="d-flex justify-content-center" style={{ marginTop: "20px" }}> | ||
| <button | ||
| data-testid="pay-btn" | ||
| className={styles.pay_new_btn} | ||
| onClick={activateNfcScan} | ||
| > | ||
| <Image | ||
| src={"/icons/lightning-icon.svg"} | ||
| alt="lightning icon" | ||
| width="20" | ||
| height="20" | ||
| /> | ||
| Activate boltcard | ||
| </button> | ||
| </div> | ||
| )} | ||
| </div> | ||
| ) | ||
| } | ||
|
|
||
| export default NFCComponent |
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