move generate function

1 files changed, 60 insertions, 4 deletions

diff --git a/src/lib/nostr.js b/src/lib/nostr.js
index 3f112788..0d21971e 100644
--- a/src/lib/nostr.js
+++ b/src/lib/nostr.js
@@ -1,12 +1,68 @@
 import { get } from 'svelte/store';
-import { entropyToMnemonic, mnemonicToSeedSync } from 'bip39';
+import * as ecc from 'tiny-secp256k1';
+import { generateMnemonic, entropyToMnemonic, mnemonicToEntropy, mnemonicToSeedSync } from 'bip39';
 import { Buffer } from 'buffer';
 import { bech32m } from 'bech32';
-import { bip32, wait, post, stretch } from '$lib/utils';
+import { bip32, failure, wait, post, stretch } from '$lib/utils';
 import { calculateId, signId } from 'nostr';
-import { password as pw, passwordPrompt } from '$lib/store';
+import { password as pw, passwordPrompt, pin, loginRedirect } from '$lib/store';
+import { goto, invalidate } from '$app/navigation';
 
-const { decode, fromWords } = bech32m;
+const { encode, decode, fromWords, toWords } = bech32m;
+
+export let generate = async (user) => {
+	let mnemonic, key, seed, entropy, cipher, salt, child;
+
+	if (!get(pin)?.length === 6) return;
+
+	let password = get(pw);
+
+	if (!password) {
+		passwordPrompt.set(true);
+	}
+
+	try {
+		await post('/password', { password });
+	} catch (e) {
+		console.log(e);
+		passwordPrompt.set(true);
+	}
+
+	await wait(() => !!get(pw));
+	password = get(pw);
+
+	mnemonic = generateMnemonic();
+	seed = mnemonicToSeedSync(mnemonic);
+	entropy = mnemonicToEntropy(mnemonic);
+	key = bip32.fromSeed(seed);
+	child = key.derivePath("m/44'/1237'/0'/0/0");
+	salt = crypto.getRandomValues(new Uint8Array(16));
+
+	let bytes = new Uint8Array(
+		await crypto.subtle.encrypt(
+			{ name: 'AES-GCM', iv: new Uint8Array(16) },
+			await stretch(password, salt),
+			Uint8Array.from(Buffer.from(entropy, 'hex'))
+		)
+	);
+
+	user.pubkey = Buffer.from(ecc.xOnlyPointFromPoint(child.publicKey)).toString('hex');
+	user.cipher = encode('en', toWords(bytes), 180);
+	user.salt = Buffer.from(salt).toString('hex');
+	user.pin = get(pin);
+
+	try {
+		await post(`/${user.username}/generate`, user);
+	} catch (e) {
+		if (e.message?.startsWith('Pin')) {
+			pin.set('');
+			failure('Wrong pin, try again');
+		}
+	}
+
+	invalidate('app:user');
+	setTimeout(() => goto(get(loginRedirect) || `/${user.username}/dashboard`), 10);
+};
 
 export let sign = async ({ event, user }) => {
 	let { cipher, username, salt } = user;