feat: add local personalized trending feed

src/components/FeedPage.vue

@@ -50,6 +50,7 @@
             to="/subscriptions"
         />
         <a
+            v-if="getRssUrl"
             :href="getRssUrl"
             class="inline-block w-auto cursor-pointer rounded-sm bg-gray-300 py-2 text-gray-600 hover:bg-gray-500 hover:text-white max-md:px-2 md:px-4 dark:bg-dark-400 dark:text-gray-400 dark:hover:bg-dark-300"
             :aria-label="$t('actions.rss_feed')"
@@ -94,7 +95,9 @@ const channelGroups = ref([]);
 
 const getRssUrl = computed(() => {
     if (isAuthenticated()) return authApiUrl() + "/feed/rss?authToken=" + getAuthToken();
-    else return authApiUrl() + "/feed/unauthenticated/rss?channels=" + getUnauthenticatedChannels();
+    const channels = getUnauthenticatedChannels();
+    if (!channels) return null;
+    return authApiUrl() + "/feed/unauthenticated/rss?channels=" + channels;
 });
 
 const filteredVideos = computed(() => {
@@ -112,7 +115,7 @@ const filteredVideos = computed(() => {
 function loadMoreVideos() {
     if (!videosStore.value) return;
     currentVideoCount = Math.min(currentVideoCount + videoStep, videosStore.value.length);
-    if (videos.value.length != videosStore.value.length) {
+    if (videos.value.length !== videosStore.value.length) {
         fetchDeArrowContent(videosStore.value.slice(videos.value.length, currentVideoCount));
         videos.value = videosStore.value.slice(0, currentVideoCount);
     }

src/components/PreferencesPage.vue

@@ -158,7 +158,6 @@
         for="chkMinimizeChapters"
     >
         <strong v-t="'actions.chapters_layout_mobile'" />
-
         <select
             id="ddlDefaultHomepage"
             v-model="mobileChapterLayout"
@@ -199,6 +198,18 @@
         </template>
         <PreferenceSwitch id="chkHideWatched" v-model="hideWatched" @change="onChange" />
     </PreferenceRow>
+    <PreferenceRow v-if="watchHistory" for-id="chkPersonalizedTrending">
+        <template #label>
+            <strong v-t="'actions.personalized_trending'" />
+        </template>
+        <PreferenceSwitch id="chkPersonalizedTrending" v-model="personalizedTrending" @change="onChange" />
+    </PreferenceRow>
+    <PreferenceRow v-if="watchHistory && personalizedTrending" for-id="chkPersonalizedTrendingOnly">
+        <template #label>
+            <strong v-t="'actions.personalized_trending_only'" />
+        </template>
+        <PreferenceSwitch id="chkPersonalizedTrendingOnly" v-model="personalizedTrendingOnly" @change="onChange" />
+    </PreferenceRow>
     <PreferenceRow for-id="ddlEnabledCodecs">
         <template #label>
             <strong v-t="'actions.enabled_codecs'" />
@@ -529,6 +540,8 @@ const searchSuggestions = usePreferenceBoolean("searchSuggestions", true);
 const watchHistory = usePreferenceBoolean("watchHistory", false);
 const searchHistory = usePreferenceBoolean("searchHistory", false);
 const hideWatched = usePreferenceBoolean("hideWatched", false);
+const personalizedTrending = usePreferenceBoolean("personalizedTrending", false);
+const personalizedTrendingOnly = usePreferenceBoolean("personalizedTrendingOnly", false);
 const selectedLanguage = usePreferenceString("hl", "en");
 const languages = [
     { code: "ar", name: "Arabic" },

src/components/TrendingPage.vue

@@ -1,12 +1,15 @@
 <template>
     <h1 v-t="'titles.trending'" class="my-4 text-center font-bold" />
-
     <hr />
-
     <LoadingIndicatorPage
-        :show-content="videos.length != 0"
+        :show-content="loaded"
         class="mx-2 grid grid-cols-1 gap-y-5 max-md:gap-x-3 sm:mx-0 sm:grid-cols-2 md:grid-cols-3 md:gap-x-6 lg:grid-cols-4 xl:grid-cols-5"
     >
+        <p
+            v-if="loaded && videos.length === 0 && personalizedOnly"
+            v-t="'info.no_watch_history_trending'"
+            class="col-span-full text-center text-gray-500"
+        />
         <VideoItem v-for="video in videos" :key="video.url" :item="video" height="118" width="210" />
     </LoadingIndicatorPage>
 </template>
@@ -18,42 +21,172 @@ import { useI18n } from "vue-i18n";
 import LoadingIndicatorPage from "./LoadingIndicatorPage.vue";
 import VideoItem from "./VideoItem.vue";
 import { fetchJson, apiUrl } from "@/composables/useApi.js";
-import { getPreferenceString } from "@/composables/usePreferences.js";
+import { getPreferenceString, getPreferenceBoolean } from "@/composables/usePreferences.js";
 import { updateWatched } from "@/composables/useMisc.js";
 import { fetchDeArrowContent } from "@/composables/useSubscriptions.js";
 import { getHomePage } from "@/composables/useMisc.js";
 
 const route = useRoute();
 const router = useRouter();
 const { t } = useI18n();
-
 const videos = ref([]);
+const loaded = ref(false);
+const personalizedOnly = ref(false);
+const firstActivation = ref(true);
 
-async function fetchTrending(region) {
-    return await fetchJson(apiUrl() + "/trending", {
-        region: region || "US",
+function idbCursorToPromise(store, fn) {
+    return new Promise((resolve, reject) => {
+        const req = store.openCursor();
+        req.onerror = () => reject(req.error);
+        req.onsuccess = e => {
+            const cursor = e.target.result;
+            if (cursor) {
+                fn(cursor.value);
+                cursor.continue();
+            } else {
+                resolve();
+            }
+        };
+    });
+}
+
+async function getPreferredChannels() {
+    if (!window.db || !getPreferenceBoolean("watchHistory", false)) return { ids: [], count: 0 };
+
+    const tx = window.db.transaction("watch_history", "readonly");
+    const store = tx.objectStore("watch_history");
+    const counts = new Map();
+
+    const countReq = store.count();
+    const historyCount = await new Promise((res, rej) => {
+        countReq.onsuccess = () => res(countReq.result);
+        countReq.onerror = () => rej(countReq.error);
     });
+
+    await idbCursorToPromise(store, video => {
+        if (video.uploaderUrl) {
+            const id = video.uploaderUrl.replace(/\/+$/, "").split("/").pop();
+            if (id) counts.set(id, (counts.get(id) || 0) + 1);
+        }
+    });
+
+    return {
+        ids: Array.from(counts.entries())
+            .sort((a, b) => b[1] - a[1])
+            .slice(0, 10)
+            .map(([id]) => id),
+        count: historyCount,
+    };
+}
+
+const channelCache = new Map();
+const CHANNEL_CACHE_TTL = 5 * 60 * 1000;
+
+async function fetchChannelVideos(channelIds, historyCount) {
+    const cacheKey = channelIds.slice().sort().join(",") + "@" + historyCount;
+    const cached = channelCache.get(cacheKey);
+    if (cached && Date.now() - cached.ts < CHANNEL_CACHE_TTL) return cached.data;
+
+    const feeds = await fetchJson(apiUrl() + "/feeds/unauthenticated?channels=" + channelIds.join(","));
+    const data = (feeds ?? []).slice().sort((a, b) => (b.uploaded ?? 0) - (a.uploaded ?? 0));
+    channelCache.set(cacheKey, { ts: Date.now(), data });
+    return data;
+}
+
+function interleave(trending, recommended) {
+    const out = [];
+    let ti = 0,
+        ri = 0;
+    while (ti < trending.length || ri < recommended.length) {
+        for (let i = 0; i < 3 && ti < trending.length; i++) out.push(trending[ti++]);
+        if (ri < recommended.length) out.push(recommended[ri++]);
+    }
+    return out;
+}
+
+async function fetchTrending(region) {
+    const personalizedTrending = getPreferenceBoolean("personalizedTrending", false);
+    const personalizedTrendingOnly = getPreferenceBoolean("personalizedTrendingOnly", false);
+
+    if (!personalizedTrending) {
+        return await fetchJson(apiUrl() + "/trending", { region: region || "US" });
+    }
+
+    const plainTrending = personalizedTrendingOnly
+        ? Promise.resolve([])
+        : fetchJson(apiUrl() + "/trending", { region: region || "US" });
+
+    try {
+        const [trending, { ids: preferredChannels, count: historyCount }] = await Promise.all([
+            plainTrending,
+            getPreferredChannels(),
+        ]);
+
+        if (preferredChannels.length === 0) return trending;
+
+        const recommended = await fetchChannelVideos(preferredChannels, historyCount);
+
+        const seen = new Set();
+        const dedup = arr =>
+            arr.filter(v => {
+                const qs = v.url?.includes("?") ? v.url.slice(v.url.indexOf("?")) : "";
+                const id = qs ? new URLSearchParams(qs).get("v") : null;
+                if (!id || seen.has(id)) return false;
+                seen.add(id);
+                return true;
+            });
+
+        if (personalizedTrendingOnly) return dedup(recommended);
+
+        return interleave(dedup(trending), dedup(recommended));
+    } catch {
+        return await fetchJson(apiUrl() + "/trending", { region: region || "US" });
+    }
+}
+
+function updatePersonalizedOnly() {
+    personalizedOnly.value =
+        getPreferenceBoolean("personalizedTrending", false) && getPreferenceBoolean("personalizedTrendingOnly", false);
 }
 
 onMounted(() => {
     if (route.path == import.meta.env.BASE_URL && getPreferenceString("homepage", "trending") == "feed") {
+        firstActivation.value = false;
         return;
     }
-    let region = getPreferenceString("region", "US");
-
+    updatePersonalizedOnly();
+    const region = getPreferenceString("region", "US");
     fetchTrending(region).then(vids => {
         videos.value = vids;
+        loaded.value = true;
         updateWatched(videos.value);
         fetchDeArrowContent(videos.value);
+        firstActivation.value = false;
     });
 });
 
 onActivated(() => {
     document.title = t("titles.trending") + " - Piped";
     if (videos.value.length > 0) updateWatched(videos.value);
     if (route.path == import.meta.env.BASE_URL) {
-        let homepage = getHomePage();
+        const homepage = getHomePage();
         if (homepage !== undefined) router.push(homepage);
     }
+    if (firstActivation.value) {
+        firstActivation.value = false;
+        return;
+    }
+    if (getPreferenceBoolean("personalizedTrending", false)) {
+        updatePersonalizedOnly();
+        channelCache.clear();
+        loaded.value = false;
+        const region = getPreferenceString("region", "US");
+        fetchTrending(region).then(vids => {
+            videos.value = vids;
+            loaded.value = true;
+            updateWatched(videos.value);
+            fetchDeArrowContent(videos.value);
+        });
+    }
 });
 </script>

src/locales/en.json

@@ -132,7 +132,9 @@
         "time_code": "Time code (in seconds or HH:MM:SS)",
         "show_chapters": "Chapters",
         "store_search_history": "Store Search History",
-        "hide_watched": "Hide watched videos in the feed",
+    	"hide_watched": "Hide watched videos in the feed",
+		"personalized_trending": "Personalize trending page",
+		"personalized_trending_only": "Show only recommendations (hide global trending)",
         "mark_as_watched": "Mark as Watched",
         "mark_as_unwatched": "Mark as Unwatched",
         "documentation": "Documentation",
@@ -234,6 +236,7 @@
         "subscribed_channels_count": "Subscribed to: {0}"
     },
     "info": {
+		"no_watch_history_trending": "No history found to personalize trending page",
         "preferences_note": "Note: preferences are saved in the local storage of your browser. Deleting your browser data will reset them.",
         "page_not_found": "Page not found",
         "copied": "Copied!",