Refine for-you tag preference runtime

js/app.js

@@ -5513,7 +5513,12 @@ class Application {
         : new Set();
 
     const preferenceSource =
-      typeof this.getHashtagPreferences === "function"
+      this.hashtagPreferencesSnapshot &&
+      typeof this.hashtagPreferencesSnapshot === "object"
+        ? this.hashtagPreferencesSnapshot
+        : typeof this.createHashtagPreferencesSnapshot === "function"
+        ? this.createHashtagPreferencesSnapshot()
+        : typeof this.getHashtagPreferences === "function"
         ? this.getHashtagPreferences()
         : {};
     const { interests = [], disinterests = [] } = preferenceSource || {};

tests/feed-engine/tag-preference-filter.test.mjs

@@ -0,0 +1,86 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { createTagPreferenceFilterStage } from "../../js/feedEngine/stages.js";
+
+test("tag preference stage filters by interests and excludes disinterests", async () => {
+  const stage = createTagPreferenceFilterStage();
+
+  const items = [
+    {
+      video: {
+        id: "keep",
+        pubkey: "a".repeat(64),
+        tags: [["t", "Cats"]],
+      },
+      metadata: {},
+    },
+    {
+      video: {
+        id: "exclude-disinterest",
+        pubkey: "b".repeat(64),
+        tags: [["t", "Dogs"]],
+      },
+      metadata: {},
+    },
+    {
+      video: {
+        id: "exclude-no-interest",
+        pubkey: "c".repeat(64),
+        tags: [["t", "Birds"]],
+      },
+      metadata: {},
+    },
+    {
+      video: {
+        id: "exclude-mixed",
+        pubkey: "d".repeat(64),
+        tags: [["t", "Cats"], ["t", "Dogs"]],
+      },
+      metadata: {},
+    },
+  ];
+
+  const result = await stage(items, {
+    runtime: {
+      tagPreferences: {
+        interests: ["cats"],
+        disinterests: ["dogs"],
+      },
+    },
+    addWhy() {},
+  });
+
+  assert.equal(result.length, 1);
+  assert.equal(result[0].video.id, "keep");
+  assert.deepEqual(result[0].metadata.matchedInterests, ["cats"]);
+});
+
+test("tag preference stage accepts interests from nip71 hashtags", async () => {
+  const stage = createTagPreferenceFilterStage();
+
+  const items = [
+    {
+      video: {
+        id: "nip71",
+        pubkey: "e".repeat(64),
+        nip71: { hashtags: ["Space"] },
+      },
+      metadata: {},
+    },
+  ];
+
+  const result = await stage(items, {
+    runtime: {
+      tagPreferences: {
+        interests: ["space"],
+        disinterests: [],
+      },
+    },
+    addWhy() {},
+  });
+
+  assert.equal(result.length, 1);
+  assert.equal(result[0].video.id, "nip71");
+  assert.deepEqual(result[0].metadata.matchedInterests, ["space"]);
+});