feat: add budget options to initNWC

jest.config.ts

@@ -0,0 +1,5 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};

package.json

@@ -24,7 +24,7 @@
   "scripts": {
     "prebuild": "yarn run clean",
     "prepack": "yarn run build",
-    "test": "echo tests are missing",
+    "test": "jest",
     "clean": "rm -rf dist",
     "build": "microbundle",
     "dev": "microbundle watch"
@@ -35,10 +35,14 @@
   },
   "devDependencies": {
     "@types/crypto-js": "^4.1.1",
+    "@types/jest": "^29.4.0",
     "@types/node": "^18.11.0",
     "@webbtc/webln-types": "^1.0.11",
     "express": "^4.18.2",
+    "jest": "^29.5.0",
     "microbundle": "^0.15.1",
+    "ts-jest": "^29.0.5",
+    "ts-node": "^10.9.1",
     "typescript": "^4.8.4",
     "websocket-polyfill": "^0.0.3"
   },

src/types.ts

@@ -185,4 +185,13 @@ export type Invoice = {
     payer_data?: unknown;
     zap_request?: unknown;
   }
-} & Record<string, unknown>;
+} & Record<string, unknown>;
+
+export type GetNWCAuthorizationUrlOptions = {
+  name?: string;
+  returnTo?: string;
+  expiresAt?: Date;
+  maxAmount?: number;
+  budgetRenewal?: "never" | "daily" | "weekly" | "monthly" | "yearly";
+  editable?: boolean;
+};

src/webln/NostrWeblnProvider.test.ts

@@ -0,0 +1,17 @@
+import { NostrWebLNProvider } from "./NostrWeblnProvider";
+import "websocket-polyfill";
+
+describe("isValidAmount", () => {
+  test("getAuthorizationUrl generates correct url with budget and pubkey from custom secret", () => {
+    expect(new NostrWebLNProvider({
+      secret: "906d83543db6022b851f395ebbef055c980e5e1432bd54c30318a842fbaf84c3"
+    }).getAuthorizationUrl({
+      budgetRenewal: "weekly",
+      editable: false,
+      expiresAt: new Date("2023-07-21"),
+      maxAmount: 100,
+      name: "TestApp",
+      returnTo: "https://example.com"
+    }).toString()).toEqual("https://nwc.getalby.com/apps/new?c=TestApp&pubkey=c5dc47856f533dad6c016b979ee3b21f83f88ae0f0058001b67a4b348339fe94&return_to=https%3A%2F%2Fexample.com&budget_renewal=weekly&expires_at=2023-07-21T00%3A00%3A00.000Z&max_amount=100&editable=false");
+  });
+});

src/webln/NostrWeblnProvider.ts

@@ -12,6 +12,7 @@ import {
 } from 'nostr-tools';
 import { KeysendArgs, RequestInvoiceArgs, RequestInvoiceResponse, RequestMethod, SendPaymentResponse, SignMessageResponse, WebLNNode, WebLNProvider } from "@webbtc/webln-types";
 import { GetInfoResponse } from '@webbtc/webln-types';
+import { GetNWCAuthorizationUrlOptions } from '../types';
 
 const NWCs: Record<string,NostrWebLNOptions> = {
   alby: {
@@ -265,7 +266,7 @@ export class NostrWebLNProvider implements WebLNProvider {
     throw new Error('Method not implemented.');
   }
 
-  getAuthorizationUrl(options: { name?: string, returnTo?: string }) {
+  getAuthorizationUrl(options: GetNWCAuthorizationUrlOptions) {
     if (!this.options.authorizationUrl) {
       throw new Error("Missing authorizationUrl option");
     }
@@ -277,10 +278,26 @@ export class NostrWebLNProvider implements WebLNProvider {
     if (options?.returnTo) {
       url.searchParams.set('return_to', options.returnTo);
     }
+
+    if (options.budgetRenewal) {
+      url.searchParams.set("budget_renewal", options.budgetRenewal)
+    }
+    if (options.expiresAt) {
+      url.searchParams.set("expires_at", options.expiresAt.toISOString())
+    }
+    if (options.maxAmount) {
+      url.searchParams.set("max_amount", options.maxAmount.toString())
+    }
+    if (options.editable !== undefined) {
+      url.searchParams.set("editable", options.editable.toString())
+    }
+
     return url;
   }
 
-  initNWC(options: { name?: string, returnTo?: string } = {}) {
+
+
+  initNWC(options: GetNWCAuthorizationUrlOptions = {}) {
     // here we assume an browser context and window/document is available
     // we set the location.host as a default name if none is given
     if (!options.name) {