add ndk cache

package.json

@@ -37,6 +37,7 @@
     "@tauri-apps/plugin-os": "github:tauri-apps/tauri-plugin-os#v2",
     "@tauri-apps/plugin-process": "github:tauri-apps/tauri-plugin-process#v2",
     "@tauri-apps/plugin-sql": "github:tauri-apps/tauri-plugin-sql#v2",
+    "@tauri-apps/plugin-store": "github:tauri-apps/tauri-plugin-store#v2",
     "@tauri-apps/plugin-stronghold": "github:tauri-apps/tauri-plugin-stronghold#v2",
     "@tauri-apps/plugin-upload": "github:tauri-apps/tauri-plugin-upload#v2",
     "@tauri-apps/plugin-window": "2.0.0-alpha.0",

pnpm-lock.yaml

@@ -61,6 +61,9 @@ dependencies:
   '@tauri-apps/plugin-sql':
     specifier: github:tauri-apps/tauri-plugin-sql#v2
     version: github.com/tauri-apps/tauri-plugin-sql/0591e9f63e0f86be79c209f4bcb564ccce4bd05c
+  '@tauri-apps/plugin-store':
+    specifier: github:tauri-apps/tauri-plugin-store#v2
+    version: github.com/tauri-apps/tauri-plugin-store/2f5e470ba6d746b54da46fcb3eb10325fa224351
   '@tauri-apps/plugin-stronghold':
     specifier: github:tauri-apps/tauri-plugin-stronghold#v2
     version: github.com/tauri-apps/tauri-plugin-stronghold/a87861766f3520b5fc1ea1f34665d814bbee9b06
@@ -7755,6 +7758,14 @@ packages:
       '@tauri-apps/api': 2.0.0-alpha.5
     dev: false
 
+  github.com/tauri-apps/tauri-plugin-store/2f5e470ba6d746b54da46fcb3eb10325fa224351:
+    resolution: {tarball: https://codeload.github.com/tauri-apps/tauri-plugin-store/tar.gz/2f5e470ba6d746b54da46fcb3eb10325fa224351}
+    name: '@tauri-apps/plugin-store'
+    version: 2.0.0-alpha.0
+    dependencies:
+      '@tauri-apps/api': 2.0.0-alpha.5
+    dev: false
+
   github.com/tauri-apps/tauri-plugin-stronghold/a87861766f3520b5fc1ea1f34665d814bbee9b06:
     resolution: {tarball: https://codeload.github.com/tauri-apps/tauri-plugin-stronghold/tar.gz/a87861766f3520b5fc1ea1f34665d814bbee9b06}
     name: '@tauri-apps/plugin-stronghold'

src-tauri/Cargo.lock

@@ -2582,6 +2582,7 @@ dependencies = [
  "tauri-plugin-process",
  "tauri-plugin-single-instance",
  "tauri-plugin-sql",
+ "tauri-plugin-store",
  "tauri-plugin-stronghold",
  "tauri-plugin-updater",
  "tauri-plugin-upload",
@@ -4981,6 +4982,18 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tauri-plugin-store"
+version = "2.0.0-alpha.0"
+source = "git+https://github.com/tauri-apps/plugins-workspace?branch=v2#6f01bc11ab5be762d6cbe0ca924f15cdde47ce0d"
+dependencies = [
+ "log",
+ "serde",
+ "serde_json",
+ "tauri",
+ "thiserror",
+]
+
 [[package]]
 name = "tauri-plugin-stronghold"
 version = "2.0.0-alpha.0"

src-tauri/Cargo.toml

@@ -31,6 +31,7 @@ tauri-plugin-app = { git = "https://github.com/tauri-apps/plugins-workspace", br
 tauri-plugin-process = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "v2" }
 tauri-plugin-os = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "v2" }
 tauri-plugin-window = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "v2" }
+tauri-plugin-store = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "v2" }
 sqlx-cli = { version = "0.7.0", default-features = false, features = [
   "sqlite",
 ] }

src/libs/ndk/cache.tsx

@@ -0,0 +1,56 @@
+import { NDKCacheAdapter } from '@nostr-dev-kit/ndk';
+import { NDKEvent, NDKSubscription } from '@nostr-dev-kit/ndk';
+import { Store } from '@tauri-apps/plugin-store';
+
+export default class TauriAdapter implements NDKCacheAdapter {
+  public store: Store;
+  readonly locking: boolean;
+
+  constructor() {
+    this.store = new Store('.ndkcache.dat');
+    this.locking = true;
+  }
+
+  public async query(subscription: NDKSubscription): Promise<void> {
+    const { filter } = subscription;
+
+    // if this filter uses both authors and kinds, then we need to query for each combination of author and kind
+    // and then combine the results
+    if (filter.authors && filter.kinds) {
+      const promises = [];
+
+      for (const author of filter.authors) {
+        for (const kind of filter.kinds) {
+          const key = `${author}:${kind}`;
+          promises.push(this.store.get(key));
+        }
+      }
+
+      const results = await Promise.all(promises);
+
+      for (const result of results) {
+        if (result) {
+          const event = await this.store.get(result as string);
+
+          if (event) {
+            const ndkEvent = new NDKEvent(subscription.ndk, JSON.parse(event as string));
+            subscription.eventReceived(ndkEvent, undefined, true);
+          }
+        }
+      }
+    }
+  }
+
+  public async setEvent(event: NDKEvent): Promise<void> {
+    const nostrEvent = await event.toNostrEvent();
+    const key = `${nostrEvent.pubkey}:${nostrEvent.kind}`;
+
+    return new Promise((resolve) => {
+      Promise.all([
+        this.store.set(event.id, JSON.stringify(nostrEvent)),
+        this.store.set(key, event.id),
+        this.store.save(),
+      ]).then(() => resolve());
+    });
+  }
+}

src/libs/ndk/instance.ts

@@ -4,6 +4,7 @@ import { ndkAdapter } from '@nostr-fetch/adapter-ndk';
 import { NostrFetcher, normalizeRelayUrlSet } from 'nostr-fetch';
 import { useEffect, useState } from 'react';
 
+import TauriAdapter from '@libs/ndk/cache';
 import { getSetting } from '@libs/storage';
 
 const setting = await getSetting('relays');
@@ -19,7 +20,8 @@ export const NDKInstance = () => {
   }, []);
 
   async function loadNdk(explicitRelayUrls: string[]) {
-    const ndkInstance = new NDK({ explicitRelayUrls });
+    const cacheAdapter = new TauriAdapter();
+    const ndkInstance = new NDK({ explicitRelayUrls, cacheAdapter });
 
     try {
       await ndkInstance.connect();