Merge pull request #120 from getAlby/fix/fetch-l402

Fix: fetch with l402

src/l402/parse.test.ts

@@ -0,0 +1,40 @@
+import { parseL402 } from "./parse";
+
+const BASE64_MAC =
+  "AgEEbHNhdAJCAAAClGOZrh7C569Yc7UMk8merfnMdIviyXr1qscW7VgpChNl21LkZ8Jex5QiPp+E1VaabeJDuWmlrh/j583axFpNAAIXc2VydmljZXM9cmFuZG9tbnVtYmVyOjAAAiZyYW5kb21udW1iZXJfY2FwYWJpbGl0aZVzPWFkZCxzdWJ0cmFjdAAABiAvFpzXGyc+8d/I9nMKKvAYP8w7kUlhuxS0eFN2sqmqHQ==";
+const HEX_MAC =
+  "jkse4mpp5q22x8xdwrmpw0t6cww6sey7fn6klnnr5303vj7h44tr3dm2c9y9qdq8f4f5z4qcqzzsxqyz5vqsp5mmhp6cx4xxysc8x";
+const HEX_INVOICE =
+  "lnbc100n1pjkse4mpp5q22x8xdwrmpw0t6cww6sey7fn6klnnr5303vj7h44tr3dm2c9y9qdq8f4f5z4qcqzzsxqyz5vqsp5mmhp6cx4xxysc8xvxaj984eue9pm83lxgezmk3umx6wxr9rrq2ns9qyyssqmmrrwthves6z3d85nafj2ds4z20qju2vpaatep8uwrvxz0xs4kznm99m7f6pmkzax09k2k9saldy34z0p0l8gm0zm5xsmg2g667pnlqp7a0qdz";
+
+describe("parseL402", () => {
+  test("should correctly parse L402 string", () => {
+    const testString = `L402 macaroon="${BASE64_MAC}", invoice="${HEX_INVOICE}"`;
+    const result = parseL402(testString);
+    expect(result).toEqual({ macaroon: BASE64_MAC, invoice: HEX_INVOICE });
+  });
+
+  test("should correctly parse LSAT string", () => {
+    const testString = `LSAT macaroon="${BASE64_MAC}", invoice="${HEX_INVOICE}"`;
+    const result = parseL402(testString);
+    expect(result).toEqual({ macaroon: BASE64_MAC, invoice: HEX_INVOICE });
+  });
+
+  test("should correctly handle unquoted values", () => {
+    const testString = `L402 macaroon=${BASE64_MAC}, invoice=${HEX_INVOICE}`;
+    const result = parseL402(testString);
+    expect(result).toEqual({ macaroon: BASE64_MAC, invoice: HEX_INVOICE });
+  });
+
+  test("should correctly handle single-quoted values", () => {
+    const testString = `LSAT macaroon='${BASE64_MAC}', invoice='${HEX_INVOICE}'`;
+    const result = parseL402(testString);
+    expect(result).toEqual({ macaroon: BASE64_MAC, invoice: HEX_INVOICE });
+  });
+
+  test("should correctly handle hexadecimal macaroon values", () => {
+    const testString = `LSAT macaroon='${HEX_MAC}', invoice='${HEX_INVOICE}'`;
+    const result = parseL402(testString);
+    expect(result).toEqual({ macaroon: HEX_MAC, invoice: HEX_INVOICE });
+  });
+});

src/l402/parse.ts

@@ -0,0 +1,20 @@
+export const parseL402 = (input: string): Record<string, string> => {
+  // Remove the L402 and LSAT identifiers
+  const string = input.replace("L402", "").replace("LSAT", "").trim();
+
+  // Initialize an object to store the key-value pairs
+  const keyValuePairs = {};
+
+  // Regular expression to match key and (quoted or unquoted) value
+  const regex = /(\w+)=("([^"]*)"|'([^']*)'|([^,]*))/g;
+  let match;
+
+  // Use regex to find all key-value pairs
+  while ((match = regex.exec(string)) !== null) {
+    // Key is always match[1]
+    // Value is either match[3] (double-quoted), match[4] (single-quoted), or match[5] (unquoted)
+    keyValuePairs[match[1]] = match[3] || match[4] || match[5];
+  }
+
+  return keyValuePairs;
+};