35 lines
1.3 KiB
TypeScript
35 lines
1.3 KiB
TypeScript
import "server-only"
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import { decrypt, encrypt } from "./encryption"
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export function calculateRefId(confirmationNumber: string, lastName: string) {
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const encryptedRefId = encrypt(`${confirmationNumber},${lastName}`)
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return encryptedRefId
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}
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export function parseRefId(refId: string) {
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// RefId is DES-ECB encryption + Base64 encoding. For legacy reasons we have
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// to do some manual handling here to get a proper Base64 string.
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//
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// - Use case: Current web replaced plus sign with hyphens when generating RefIds.
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// Handling: We replace hyphens with plus signs.
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//
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// - Use case: Incoming links in the wild do not encode the RefId properly.
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// Handling: We replace spaces with plus signs. Effectively, reversing the
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// decoding of plus signs into spaces that Next.js does for us for incoming
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// search params.
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// Slash and equal sign are not decoded into anything, so no action needed.
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// We only need to cater for those three (plus, slash, equals) as RefId is
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// Base64 encoded which only has these three special characters.
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const data = decrypt(refId.replace(/ |-/g, "+"))
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const parts = data.split(",")
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if (parts.length !== 2) {
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throw new Error("Invalid refId format")
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}
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return {
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confirmationNumber: parts[0],
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lastName: parts[1],
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}
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}
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