refactor: create @ditto/cashu package

deno.json

@@ -13,7 +13,8 @@
     "./packages/ratelimiter",
     "./packages/transcode",
     "./packages/translators",
-    "./packages/uploaders"
+    "./packages/uploaders",
+    "./packages/cashu"
   ],
   "tasks": {
     "start": "deno run -A --env-file --deny-read=.env packages/ditto/server.ts",

packages/cashu/cashu.test.ts

@@ -1,17 +1,25 @@
 import { NSecSigner } from '@nostrify/nostrify';
+import { NPostgres } from '@nostrify/db';
 import { genEvent } from '@nostrify/nostrify/test';
 
 import { generateSecretKey, getPublicKey } from 'nostr-tools';
 import { bytesToString, stringToBytes } from '@scure/base';
 import { assertEquals } from '@std/assert';
 
-import { createTestDB } from '@/test.ts';
+import { DittoPolyPg, TestDB } from '@ditto/db';
+import { DittoConf } from '@ditto/conf';
 
-import { organizeProofs, validateAndParseWallet } from '@/utils/cashu.ts';
+import { getLastRedeemedNutzap, organizeProofs, validateAndParseWallet } from './cashu.ts';
 
 Deno.test('validateAndParseWallet function returns valid data', async () => {
-  await using db = await createTestDB({ pure: true });
-  const store = db.store;
+  const conf = new DittoConf(Deno.env);
+  const orig = new DittoPolyPg(conf.databaseUrl);
+
+  await using db = new TestDB(orig);
+  await db.migrate();
+  await db.clear();
+
+  const store = new NPostgres(orig.kysely);
 
   const sk = generateSecretKey();
   const signer = new NSecSigner(sk);
@@ -30,7 +38,7 @@ Deno.test('validateAndParseWallet function returns valid data', async () => {
       ]),
     ),
   }, sk);
-  await db.store.event(wallet);
+  await store.event(wallet);
 
   // Nutzap information
   const nutzapInfo = genEvent({
@@ -40,7 +48,7 @@ Deno.test('validateAndParseWallet function returns valid data', async () => {
       ['mint', 'https://mint.soul.com'],
     ],
   }, sk);
-  await db.store.event(nutzapInfo);
+  await store.event(nutzapInfo);
 
   const { data, error } = await validateAndParseWallet(store, signer, pubkey);
 
@@ -55,8 +63,14 @@ Deno.test('validateAndParseWallet function returns valid data', async () => {
 });
 
 Deno.test('organizeProofs function is working', async () => {
-  await using db = await createTestDB({ pure: true });
-  const store = db.store;
+  const conf = new DittoConf(Deno.env);
+  const orig = new DittoPolyPg(conf.databaseUrl);
+
+  await using db = new TestDB(orig);
+  await db.migrate();
+  await db.clear();
+
+  const store = new NPostgres(orig.kysely);
 
   const sk = generateSecretKey();
   const signer = new NSecSigner(sk);
@@ -98,7 +112,7 @@ Deno.test('organizeProofs function is working', async () => {
       }),
     ),
   }, sk);
-  await db.store.event(event1);
+  await store.event(event1);
 
   const proof1 = {
     'id': '004f7adf2a04356c',
@@ -124,7 +138,7 @@ Deno.test('organizeProofs function is working', async () => {
       token1,
     ),
   }, sk);
-  await db.store.event(event2);
+  await store.event(event2);
 
   const proof2 = {
     'id': '004f7adf2a04356c',
@@ -151,7 +165,7 @@ Deno.test('organizeProofs function is working', async () => {
       token2,
     ),
   }, sk);
-  await db.store.event(event3);
+  await store.event(event3);
 
   const unspentProofs = await store.query([{ kinds: [7375], authors: [pubkey] }]);
 
@@ -169,3 +183,62 @@ Deno.test('organizeProofs function is working', async () => {
     },
   });
 });
+
+Deno.test('getLastRedeemedNutzap function is working', async () => {
+  const conf = new DittoConf(Deno.env);
+  const orig = new DittoPolyPg(conf.databaseUrl);
+
+  await using db = new TestDB(orig);
+  await db.migrate();
+  await db.clear();
+
+  const store = new NPostgres(orig.kysely);
+
+  const sk = generateSecretKey();
+  const signer = new NSecSigner(sk);
+  const pubkey = await signer.getPublicKey();
+
+  const event1 = genEvent({
+    kind: 7376,
+    content: '<nip-44-encrypted>',
+    created_at: Math.floor(Date.now() / 1000), // now
+    tags: [
+      ['e', '<event-id-of-created-token>', '', 'redeemed'],
+    ],
+  }, sk);
+  await store.event(event1);
+
+  const event2 = genEvent({
+    kind: 7376,
+    content: '<nip-44-encrypted>',
+    created_at: Math.floor((Date.now() - 86400000) / 1000), // yesterday
+    tags: [
+      ['e', '<event-id-of-created-token>', '', 'redeemed'],
+    ],
+  }, sk);
+  await store.event(event2);
+
+  const event3 = genEvent({
+    kind: 7376,
+    content: '<nip-44-encrypted>',
+    created_at: Math.floor((Date.now() - 86400000) / 1000), // yesterday
+    tags: [
+      ['e', '<event-id-of-created-token>', '', 'redeemed'],
+    ],
+  }, sk);
+  await store.event(event3);
+
+  const event4 = genEvent({
+    kind: 7376,
+    content: '<nip-44-encrypted>',
+    created_at: Math.floor((Date.now() + 86400000) / 1000), // tomorrow
+    tags: [
+      ['e', '<event-id-of-created-token>', '', 'redeemed'],
+    ],
+  }, sk);
+  await store.event(event4);
+
+  const event = await getLastRedeemedNutzap(store, pubkey);
+
+  assertEquals(event, event4);
+});

packages/cashu/cashu.ts

@@ -1,13 +1,12 @@
-import { SetRequired } from 'type-fest';
+import type { Proof } from '@cashu/cashu-ts';
+import { type NostrEvent, type NostrFilter, type NostrSigner, NSchema as n, type NStore } from '@nostrify/nostrify';
 import { getPublicKey } from 'nostr-tools';
-import { NostrEvent, NostrSigner, NSchema as n, NStore } from '@nostrify/nostrify';
-import { logi } from '@soapbox/logi';
 import { stringToBytes } from '@scure/base';
+import { logi } from '@soapbox/logi';
+import type { SetRequired } from 'type-fest';
 import { z } from 'zod';
 
-import { errorJson } from '@/utils/log.ts';
-import { isNostrId } from '@/utils.ts';
-import { tokenEventSchema } from '@/schemas/cashu.ts';
+import { proofSchema, tokenEventSchema } from './schemas.ts';
 
 type Data = {
   wallet: NostrEvent;
@@ -139,4 +138,114 @@ async function organizeProofs(
   return organizedProofs;
 }
 
-export { organizeProofs, validateAndParseWallet };
+/** Returns a spending history event that contains the last redeemed nutzap. */
+async function getLastRedeemedNutzap(
+  store: NStore,
+  pubkey: string,
+  opts?: { signal?: AbortSignal },
+): Promise<NostrEvent | undefined> {
+  const events = await store.query([{ kinds: [7376], authors: [pubkey] }], { signal: opts?.signal });
+
+  for (const event of events) {
+    const nutzap = event.tags.find(([name]) => name === 'e');
+    const redeemed = nutzap?.[3];
+    if (redeemed === 'redeemed') {
+      return event;
+    }
+  }
+}
+
+/**
+ * toBeRedeemed are the nutzaps that will be redeemed into a kind 7375 and saved in the kind 7376 tags
+ * The tags format is: [
+ *   [ "e", "<9321-event-id>", "<relay-hint>", "redeemed" ], // nutzap event that has been redeemed
+ *   [ "p", "<sender-pubkey>" ] // pubkey of the author of the 9321 event (nutzap sender)
+ * ]
+ * https://github.com/nostr-protocol/nips/blob/master/61.md#updating-nutzap-redemption-history
+ */
+type MintsToProofs = { [key: string]: { proofs: Proof[]; toBeRedeemed: string[][] } };
+
+/**
+ * Gets proofs from nutzaps that have not been redeemed yet.
+ * Each proof is associated with a specific mint.
+ * @param store Store used to query for the nutzaps
+ * @param nutzapsFilter Filter used to query for the nutzaps, most useful when
+ * it contains a 'since' field so it saves time and resources
+ * @param relay Relay hint where the new kind 7376 will be saved
+ * @returns MintsToProofs An object where each key is a mint url and the values are an array of proofs
+ * and an array of redeemed tags in this format:
+ * ```
+ * [
+ *    ...,
+ *    [ "e", "<9321-event-id>", "<relay-hint>", "redeemed" ], // nutzap event that has been redeemed
+ *    [ "p", "<sender-pubkey>" ] // pubkey of the author of the 9321 event (nutzap sender)
+ * ]
+ * ```
+ */
+async function getMintsToProofs(
+  store: NStore,
+  nutzapsFilter: NostrFilter,
+  relay: string,
+  opts?: { signal?: AbortSignal },
+): Promise<MintsToProofs> {
+  const mintsToProofs: MintsToProofs = {};
+
+  const nutzaps = await store.query([nutzapsFilter], { signal: opts?.signal });
+
+  for (const event of nutzaps) {
+    try {
+      const mint = event.tags.find(([name]) => name === 'u')?.[1];
+      if (!mint) {
+        continue;
+      }
+
+      const proofs = event.tags.filter(([name]) => name === 'proof').map((tag) => tag[1]).filter(Boolean);
+      if (proofs.length < 1) {
+        continue;
+      }
+
+      if (!mintsToProofs[mint]) {
+        mintsToProofs[mint] = { proofs: [], toBeRedeemed: [] };
+      }
+
+      const parsed = n.json().pipe(
+        proofSchema,
+      ).array().safeParse(proofs);
+
+      if (!parsed.success) {
+        continue;
+      }
+
+      mintsToProofs[mint].proofs = [...mintsToProofs[mint].proofs, ...parsed.data];
+      mintsToProofs[mint].toBeRedeemed = [
+        ...mintsToProofs[mint].toBeRedeemed,
+        [
+          'e', // nutzap event that has been redeemed
+          event.id,
+          relay,
+          'redeemed',
+        ],
+        ['p', event.pubkey], // pubkey of the author of the 9321 event (nutzap sender)
+      ];
+    } catch (e) {
+      logi({ level: 'error', ns: 'ditto.api.cashu.wallet.swap', error: errorJson(e) });
+    }
+  }
+
+  return mintsToProofs;
+}
+
+/** Serialize an error into JSON for JSON logging. */
+export function errorJson(error: unknown): Error | null {
+  if (error instanceof Error) {
+    return error;
+  } else {
+    return null;
+  }
+}
+
+function isNostrId(value: unknown): boolean {
+  return n.id().safeParse(value).success;
+}
+
+export { getLastRedeemedNutzap, getMintsToProofs, organizeProofs, validateAndParseWallet };

packages/cashu/deno.json

@@ -0,0 +1,7 @@
+{
+  "name": "@ditto/cashu",
+  "version": "0.1.0",
+  "exports": {
+    ".": "./mod.ts"
+  }
+}

packages/cashu/mod.ts

@@ -0,0 +1,2 @@
+export { getLastRedeemedNutzap, getMintsToProofs, organizeProofs, validateAndParseWallet } from './cashu.ts';
+export { proofSchema, tokenEventSchema } from './schemas.ts';

packages/cashu/schemas.test.ts

@@ -1,7 +1,8 @@
 import { NSchema as n } from '@nostrify/nostrify';
 import { assertEquals } from '@std/assert';
-import { proofSchema } from '@/schemas/cashu.ts';
-import { tokenEventSchema } from '@/schemas/cashu.ts';
+
+import { proofSchema } from './schemas.ts';
+import { tokenEventSchema } from './schemas.ts';
 
 Deno.test('Parse proof', () => {
   const proof =

packages/ditto/controllers/api/cashu.ts

@@ -1,4 +1,5 @@
 import { CashuMint, CashuWallet, MintQuoteState, Proof } from '@cashu/cashu-ts';
+import { organizeProofs, tokenEventSchema, validateAndParseWallet } from '@ditto/cashu';
 import { userMiddleware } from '@ditto/mastoapi/middleware';
 import { DittoRoute } from '@ditto/mastoapi/router';
 import { generateSecretKey, getPublicKey } from 'nostr-tools';
@@ -14,8 +15,6 @@ import { hydrateEvents } from '@/storages/hydrate.ts';
 import { nostrNow } from '@/utils.ts';
 import { errorJson } from '@/utils/log.ts';
 import { getAmount } from '@/utils/bolt11.ts';
-import { organizeProofs, validateAndParseWallet } from '@/utils/cashu.ts';
-import { tokenEventSchema } from '@/schemas/cashu.ts';
 import { DittoEvent } from '@/interfaces/DittoEvent.ts';
 
 type Wallet = z.infer<typeof walletSchema>;

packages/ditto/middleware/swapNutzapsMiddleware.ts

@@ -1,12 +1,11 @@
-import { CashuMint, CashuWallet, getEncodedToken, type Proof } from '@cashu/cashu-ts';
+import { CashuMint, CashuWallet, getEncodedToken } from '@cashu/cashu-ts';
+import { getLastRedeemedNutzap, getMintsToProofs, validateAndParseWallet } from '@ditto/cashu';
 import { HTTPException } from '@hono/hono/http-exception';
-import { NostrEvent, NostrFilter, NSchema as n, NStore } from '@nostrify/nostrify';
+import { NostrFilter } from '@nostrify/nostrify';
 import { logi } from '@soapbox/logi';
 
 import { errorJson } from '@/utils/log.ts';
 import { createEvent } from '@/utils/api.ts';
-import { validateAndParseWallet } from '@/utils/cashu.ts';
-import { proofSchema } from '@/schemas/cashu.ts';
 import { MiddlewareHandler } from '@hono/hono/types';
 
 /**
@@ -93,100 +92,3 @@ export const swapNutzapsMiddleware: MiddlewareHandler = async (c, next) => {
 
   await next();
 };
-
-/** Returns a spending history event that contains the last redeemed nutzap. */
-async function getLastRedeemedNutzap(
-  store: NStore,
-  pubkey: string,
-  opts?: { signal?: AbortSignal },
-): Promise<NostrEvent | undefined> {
-  const events = await store.query([{ kinds: [7376], authors: [pubkey] }], { signal: opts?.signal });
-
-  for (const event of events) {
-    const nutzap = event.tags.find(([name]) => name === 'e');
-    const redeemed = nutzap?.[3];
-    if (redeemed === 'redeemed') {
-      return event;
-    }
-  }
-}
-
-/**
- * toBeRedeemed are the nutzaps that will be redeemed into a kind 7375 and saved in the kind 7376 tags
- * The tags format is: [
- *   [ "e", "<9321-event-id>", "<relay-hint>", "redeemed" ], // nutzap event that has been redeemed
- *   [ "p", "<sender-pubkey>" ] // pubkey of the author of the 9321 event (nutzap sender)
- * ]
- * https://github.com/nostr-protocol/nips/blob/master/61.md#updating-nutzap-redemption-history
- */
-type MintsToProofs = { [key: string]: { proofs: Proof[]; toBeRedeemed: string[][] } };
-
-/**
- * Gets proofs from nutzaps that have not been redeemed yet.
- * Each proof is associated with a specific mint.
- * @param store Store used to query for the nutzaps
- * @param nutzapsFilter Filter used to query for the nutzaps, most useful when
- * it contains a 'since' field so it saves time and resources
- * @param relay Relay hint where the new kind 7376 will be saved
- * @returns MintsToProofs An object where each key is a mint url and the values are an array of proofs
- * and an array of redeemed tags in this format:
- * ```
- * [
- *    ...,
- *    [ "e", "<9321-event-id>", "<relay-hint>", "redeemed" ], // nutzap event that has been redeemed
- *    [ "p", "<sender-pubkey>" ] // pubkey of the author of the 9321 event (nutzap sender)
- * ]
- * ```
- */
-async function getMintsToProofs(
-  store: NStore,
-  nutzapsFilter: NostrFilter,
-  relay: string,
-  opts?: { signal?: AbortSignal },
-): Promise<MintsToProofs> {
-  const mintsToProofs: MintsToProofs = {};
-
-  const nutzaps = await store.query([nutzapsFilter], { signal: opts?.signal });
-
-  for (const event of nutzaps) {
-    try {
-      const mint = event.tags.find(([name]) => name === 'u')?.[1];
-      if (!mint) {
-        continue;
-      }
-
-      const proofs = event.tags.filter(([name]) => name === 'proof').map((tag) => tag[1]).filter(Boolean);
-      if (proofs.length < 1) {
-        continue;
-      }
-
-      if (!mintsToProofs[mint]) {
-        mintsToProofs[mint] = { proofs: [], toBeRedeemed: [] };
-      }
-
-      const parsed = n.json().pipe(
-        proofSchema,
-      ).array().safeParse(proofs);
-
-      if (!parsed.success) {
-        continue;
-      }
-
-      mintsToProofs[mint].proofs = [...mintsToProofs[mint].proofs, ...parsed.data];
-      mintsToProofs[mint].toBeRedeemed = [
-        ...mintsToProofs[mint].toBeRedeemed,
-        [
-          'e', // nutzap event that has been redeemed
-          event.id,
-          relay,
-          'redeemed',
-        ],
-        ['p', event.pubkey], // pubkey of the author of the 9321 event (nutzap sender)
-      ];
-    } catch (e) {
-      logi({ level: 'error', ns: 'ditto.api.cashu.wallet.swap', error: errorJson(e) });
-    }
-  }
-
-  return mintsToProofs;
-}