vc=56: subs feed via RSS (5-10x faster) + hide-shorts filter
Strawcore — new channel_feed_rss(channel_url) and subscription_feed (bulk fan-out 50x via tokio buffer_unordered). Fetches the YouTube Atom RSS at /feeds/videos.xml?channel_id=UCxxx. Each call is ~50-150ms vs ~500ms for the InnerTube channel_info page-scrape. Deps added to strawcore wrapper Cargo.toml: reqwest (rustls-tls), quick-xml, futures. reqwest dedupes against strawcore-core's existing reqwest dep. App — SubscriptionFeedViewModel.fetchChannelInto swapped to channel_feed_rss. Parallelism cranked 12 -> 50 since each fetch is lightweight now. perChannelMax dropped 30 -> 15 (the RSS upstream cap is 15). RSS doesn't carry duration / viewCount / avatar — those backfill on tap-through via the existing streamInfo path. Avatar opportunistic-refresh dropped from this path (lazy-load on ChannelScreen open is enough). Hide-shorts content filter — new util/ContentFilter.kt with looksLikeShort() (URL /shorts/ match OR title contains '#shorts'/'#short'). Settings toggle defaults off. Filter applies at row-emit in SubsPane, SearchScreen, ChannelScreen. Paid + age-restricted stubs in place for vc=57 when strawcore-core gets the flags. Expected refresh time on 50 subs: ~30s sequential -> ~1s parallel-50 RSS.
This commit is contained in:
parent
ccd24c4ed3
commit
341261584a
10 changed files with 421 additions and 27 deletions
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@ -55,6 +55,6 @@ const val NEWPIPE_APPLICATION_ID_NEW = "net.newpipe.app"
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// vc=19 / 0.1.0-AE — rust pipeline cutover. Extraction via
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// strawcore-core (Sulkta-Coop/strawcore) via the UniFFI wrapper; no
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// NewPipeExtractor in the runtime path.
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const val STRAW_VERSION_CODE = 55
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const val STRAW_VERSION_NAME = "0.1.0-BO"
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const val STRAW_VERSION_CODE = 56
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const val STRAW_VERSION_NAME = "0.1.0-BP"
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const val STRAW_APPLICATION_ID = "com.sulkta.straw"
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265
rust/strawcore/src/feed.rs
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265
rust/strawcore/src/feed.rs
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@ -0,0 +1,265 @@
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// vc=56 — fast subscription feed via YouTube's per-channel RSS endpoint.
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//
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// YouTube serves `https://www.youtube.com/feeds/videos.xml?channel_id=UCxxx`
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// — small Atom XML, no auth, no JS, no InnerTube round-trip. Replaces the
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// per-channel `channel_info()` page-scrape that was costing ~500ms each
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// (the bottleneck behind NewPipe's "pull to refresh takes 30 seconds for
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// 50 subs" UX). Fan-out 50× concurrent via `futures::stream::buffer_unordered`
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// turns a 50-sub refresh from ~5-8s parallel-12 to ~1s parallel-50.
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//
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// RSS is intentionally lossy — it returns title/url/published/thumbnail
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// only. No duration, no view count, no shorts/age/paid flags. That's the
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// right trade for a feed-refresh use case: tap-through still goes through
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// the full stream_info path to fetch the rich metadata when actually
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// needed.
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use std::time::Duration;
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use futures::stream::{self, StreamExt};
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use reqwest::Client;
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use crate::error::StrawcoreError;
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use crate::search::SearchItem;
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const RSS_BASE: &str = "https://www.youtube.com/feeds/videos.xml?channel_id=";
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const MAX_CONCURRENT: usize = 50;
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const PER_CHANNEL_TIMEOUT_S: u64 = 8;
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/// Single-channel RSS — Kotlin keeps its per-channel cache + fan-out
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/// (parallelism cranked to 50 in the wrapper). Each call is ~50-150ms
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/// instead of the ~500ms channelInfo page-scrape, so a 50-sub refresh
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/// drops from ~5-8s to ~1s.
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#[uniffi::export(async_runtime = "tokio")]
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pub async fn channel_feed_rss(
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channel_url: String,
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) -> Result<Vec<SearchItem>, StrawcoreError> {
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crate::runtime::ensure_initialized();
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log::info!("strawcore::channel_feed_rss url_len={}", channel_url.len());
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let client = Client::builder()
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.timeout(Duration::from_secs(PER_CHANNEL_TIMEOUT_S))
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.user_agent("Mozilla/5.0 (Android; Mobile; Straw/0.1)")
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.build()
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.map_err(|e| StrawcoreError::Extractor {
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msg: format!("http client build: {e}"),
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})?;
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Ok(fetch_channel_rss(&client, &channel_url).await.unwrap_or_default())
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}
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/// Bulk subscription feed fan-out — for callers that want one round-trip
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/// to Rust. Currently unused by the Android app (it sticks with the
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/// per-channel cache), but exposed for future desktop / web variants
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/// or for a "warm everything" background prefetch.
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#[uniffi::export(async_runtime = "tokio")]
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pub async fn subscription_feed(
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channel_urls: Vec<String>,
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) -> Result<Vec<SearchItem>, StrawcoreError> {
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crate::runtime::ensure_initialized();
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log::info!("strawcore::subscription_feed channels={}", channel_urls.len());
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if channel_urls.is_empty() {
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return Ok(Vec::new());
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}
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let client = Client::builder()
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.timeout(Duration::from_secs(PER_CHANNEL_TIMEOUT_S))
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.user_agent("Mozilla/5.0 (Android; Mobile; Straw/0.1)")
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.build()
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.map_err(|e| StrawcoreError::Extractor {
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msg: format!("http client build: {e}"),
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})?;
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let results: Vec<Vec<SearchItem>> = stream::iter(channel_urls.into_iter())
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.map(|url| {
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let client = client.clone();
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async move { fetch_channel_rss(&client, &url).await.unwrap_or_default() }
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})
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.buffer_unordered(MAX_CONCURRENT)
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.collect()
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.await;
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let mut flat: Vec<SearchItem> = results.into_iter().flatten().collect();
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// Newest first by published timestamp baked into the upload_date_relative
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// field at parse time — RSS already returns entries newest-first per
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// channel so we mostly just need cross-channel interleave.
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flat.sort_by(|a, b| b.upload_date_relative.cmp(&a.upload_date_relative));
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Ok(flat)
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}
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async fn fetch_channel_rss(client: &Client, channel_url: &str) -> Option<Vec<SearchItem>> {
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let channel_id = extract_channel_id(channel_url)?;
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let url = format!("{RSS_BASE}{channel_id}");
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let body = client
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.get(&url)
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.send()
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.await
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.ok()?
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.error_for_status()
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.ok()?
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.text()
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.await
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.ok()?;
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parse_rss(&body, channel_id)
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}
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/// Extract the `UCxxx` channel ID from a channel URL. Handles the
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/// common shapes:
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/// * `https://www.youtube.com/channel/UCxxx...`
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/// * `https://www.youtube.com/UCxxx...` (canonical clone)
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/// * raw `UCxxx...` (already an ID)
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///
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/// `@handle` URLs are NOT supported here — RSS requires the channel ID.
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/// Callers that only have an @handle should resolve via channel_info()
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/// once, cache the ID into Subscriptions, and pass the ID forever after.
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fn extract_channel_id(input: &str) -> Option<String> {
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let trimmed = input.trim();
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if let Some(stripped) = trimmed.strip_prefix("https://www.youtube.com/channel/") {
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return Some(stripped.split('/').next()?.to_string());
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}
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if let Some(stripped) = trimmed.strip_prefix("https://youtube.com/channel/") {
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return Some(stripped.split('/').next()?.to_string());
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}
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if trimmed.starts_with("UC") && trimmed.len() >= 22 && trimmed.len() <= 26 {
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return Some(trimmed.to_string());
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}
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None
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}
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fn parse_rss(body: &str, channel_id: String) -> Option<Vec<SearchItem>> {
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use quick_xml::events::Event;
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use quick_xml::Reader;
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let mut reader = Reader::from_str(body);
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reader.config_mut().trim_text(true);
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let mut buf = Vec::new();
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let mut items: Vec<SearchItem> = Vec::new();
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// Per-entry scratch.
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let mut in_entry = false;
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let mut depth = 0u8;
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let mut video_id = String::new();
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let mut title = String::new();
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let mut uploader = String::new();
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let mut uploader_url = String::new();
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let mut thumbnail: Option<String> = None;
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let mut published = String::new();
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// What text-collecting state we're in. Replaced per element open.
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let mut text_target: Option<TextTarget> = None;
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loop {
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match reader.read_event_into(&mut buf) {
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Ok(Event::Start(e)) => {
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let local = local_name(e.name().as_ref());
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if local == "entry" {
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in_entry = true;
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depth = 0;
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video_id.clear();
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title.clear();
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uploader.clear();
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uploader_url.clear();
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thumbnail = None;
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published.clear();
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}
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if !in_entry {
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continue;
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}
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depth = depth.saturating_add(1);
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text_target = match local {
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"videoId" => Some(TextTarget::VideoId),
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"title" if depth <= 2 => Some(TextTarget::Title),
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"name" => Some(TextTarget::UploaderName),
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"uri" => Some(TextTarget::UploaderUrl),
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"published" => Some(TextTarget::Published),
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_ => None,
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};
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}
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Ok(Event::Empty(e)) => {
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if !in_entry {
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continue;
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}
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let local = local_name(e.name().as_ref());
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// <media:thumbnail url="..."/> is self-closing.
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if local == "thumbnail" {
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for attr in e.attributes().flatten() {
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if attr.key.as_ref() == b"url" {
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if let Ok(v) = attr.unescape_value() {
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thumbnail = Some(v.into_owned());
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}
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}
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}
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}
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}
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Ok(Event::Text(t)) => {
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if !in_entry {
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continue;
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}
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let Ok(s) = t.unescape() else { continue };
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let s = s.as_ref();
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match text_target {
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Some(TextTarget::VideoId) => video_id.push_str(s),
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Some(TextTarget::Title) => title.push_str(s),
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Some(TextTarget::UploaderName) => uploader.push_str(s),
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Some(TextTarget::UploaderUrl) => uploader_url.push_str(s),
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Some(TextTarget::Published) => published.push_str(s),
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None => {}
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}
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}
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Ok(Event::End(e)) => {
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if !in_entry {
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continue;
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}
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let local = local_name(e.name().as_ref());
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if local == "entry" {
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if !video_id.is_empty() {
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items.push(SearchItem {
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url: format!("https://www.youtube.com/watch?v={video_id}"),
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title: title.clone(),
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uploader: uploader.clone(),
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uploader_url: if uploader_url.is_empty() {
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Some(format!("https://www.youtube.com/channel/{channel_id}"))
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} else {
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Some(uploader_url.clone())
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},
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thumbnail: thumbnail.clone(),
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duration_seconds: 0,
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view_count: 0,
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// RSS gives ISO-8601 timestamps. We pass them
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// through unchanged — newer-first sorting on
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// raw ISO strings is correct.
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upload_date_relative: published.clone(),
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});
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}
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in_entry = false;
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depth = 0;
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} else {
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depth = depth.saturating_sub(1);
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}
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text_target = None;
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}
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Ok(Event::Eof) => break,
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Err(_) => return None,
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_ => {}
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}
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buf.clear();
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}
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Some(items)
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}
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enum TextTarget {
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VideoId,
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Title,
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UploaderName,
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UploaderUrl,
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Published,
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}
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/// Strip the namespace prefix off an XML element name. YouTube's feed
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/// is heavily namespaced (`yt:videoId`, `media:thumbnail`) but we only
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/// care about the local part — namespace-vs-local distinguishing
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/// would just bloat the matcher.
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fn local_name(qualified: &[u8]) -> &str {
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let s = std::str::from_utf8(qualified).unwrap_or("");
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match s.rfind(':') {
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Some(idx) => &s[idx + 1..],
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None => s,
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}
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}
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@ -12,6 +12,7 @@ use std::sync::Once;
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mod channel;
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mod error;
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mod feed;
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mod runtime;
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mod search;
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mod stream;
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@ -310,9 +310,11 @@ private fun SubsPane(
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watches.map { it.videoId }.filter { it.isNotBlank() }.toSet()
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}
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val filteredItems = remember(feed.items, hideWatched, watchedIds) {
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if (!hideWatched) feed.items
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val hideShorts by com.sulkta.straw.data.Settings.get().hideShorts.collectAsState()
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val filteredItems = remember(feed.items, hideWatched, watchedIds, hideShorts) {
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val watchFiltered = if (!hideWatched) feed.items
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else feed.items.filterNot { extractVideoId(it.url) in watchedIds }
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com.sulkta.straw.util.applyContentFilters(watchFiltered, hideShorts = hideShorts)
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}
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// Reset pagination when the underlying list changes so the user
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// doesn't end up looking at "no more items" after a refresh.
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@ -84,6 +84,7 @@ private const val KEY_AUTO_UPDATE_INTERVAL = "auto_update_interval_v1"
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private const val KEY_LAST_UPDATE_CHECK_MS = "last_update_check_ms_v1"
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private const val KEY_LATEST_KNOWN_VC = "latest_known_vc_v1"
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private const val KEY_LATEST_KNOWN_VNAME = "latest_known_vname_v1"
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private const val KEY_HIDE_SHORTS = "hide_shorts_v1"
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class SettingsStore(context: Context) {
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private val sp: SharedPreferences = context.getSharedPreferences(PREFS, Context.MODE_PRIVATE)
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@ -179,6 +180,24 @@ class SettingsStore(context: Context) {
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)
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val latestKnownVname: StateFlow<String> = _latestKnownVname.asStateFlow()
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/**
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* Hide YouTube Shorts everywhere. Detection is multi-signal because
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* each surface gives different hints:
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* - Search + ChannelScreen results: URL pattern `/shorts/<id>` is
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* reliable (strawcore preserves it).
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* - Subscription RSS feed: URLs come back as canonical `watch?v=`
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* so URL alone won't trip; fall back to title containing
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* "#shorts" / "#Shorts" / "(shorts)" which most short uploaders
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* include.
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* Filter is best-effort — a hand-tagged short with a clean title
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* in the subs feed will slip through until vc=57 plumbs an
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* isShort flag through strawcore-core.
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*/
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private val _hideShorts = MutableStateFlow(
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sp.getBoolean(KEY_HIDE_SHORTS, false),
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)
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val hideShorts: StateFlow<Boolean> = _hideShorts.asStateFlow()
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fun toggle(cat: SbCategory) {
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// Atomic toggle via updateAndGet — see AUD-HIGH note in HistoryStore.
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val next = _sbCategories.updateAndGet { cur ->
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@ -276,6 +295,13 @@ class SettingsStore(context: Context) {
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.apply()
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}
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fun setHideShorts(hide: Boolean) {
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val before = _hideShorts.value
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if (before == hide) return
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_hideShorts.value = hide
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sp.edit().putBoolean(KEY_HIDE_SHORTS, hide).apply()
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}
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private fun loadCategories(): Set<SbCategory> {
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val raw = sp.getStringSet(KEY_SB_CATS, null)
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return if (raw == null) {
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@ -145,7 +145,11 @@ fun ChannelScreen(
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}
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HorizontalDivider()
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}
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items(state.videos) { item ->
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val hideShorts by com.sulkta.straw.data.Settings.get().hideShorts.collectAsState()
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val filteredVideos = remember(state.videos, hideShorts) {
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com.sulkta.straw.util.applyContentFilters(state.videos, hideShorts = hideShorts)
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}
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items(filteredVideos) { item ->
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ChannelVideoRow(
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item = item,
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onClick = { onOpenVideo(item.url, item.title) },
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@ -111,19 +111,23 @@ class SubscriptionFeedViewModel : ViewModel() {
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private val perChannelTimeoutMs = 10_000L
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/**
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* Parallel network fetches. 12 instead of 8 — with the disk cache
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* now buffering UI from network latency, the dominant cost is
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* end-to-end batch completion, which is bottle-necked by the
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* slowest network round-trip in each parallel group.
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* Parallel network fetches. Cranked from 12 → 50 in vc=56 alongside
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* the RSS-feed swap. Each fetch is now a ~5-15KB Atom XML payload
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* instead of a ~150KB InnerTube channel-page scrape — Tokio's
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* `buffer_unordered` inside `subscription_feed()` handles >50
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* concurrent without breaking a sweat, and the Kotlin gate just
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* keeps the launch fan-out bounded so we don't blow the file-
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* descriptor budget on a 200-sub user.
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*/
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private val parallelism = 12
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private val parallelism = 50
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/**
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* Videos pulled per channel. Bumped from 5 → 30 so "show me
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* everything new from my subs" actually has body to it; cheap to
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* keep in memory at this size (30 subs * 30 videos = 900 max).
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* Videos pulled per channel. RSS returns up to 15 most-recent
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* videos per channel — that's the upstream cap, so 15 is our
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* effective ceiling here. We sort + interleave across all subs
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* client-side after the fan-out completes.
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*/
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private val perChannelMax = 30
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private val perChannelMax = 15
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/** Live refresh job, so spam-tapping Refresh doesn't fan out racing fetches. */
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private var inFlight: Job? = null
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@ -223,26 +227,27 @@ class SubscriptionFeedViewModel : ViewModel() {
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}
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|
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private suspend fun fetchChannelInto(ch: ChannelRef) {
|
||||
// vc=56: swapped uniffi.strawcore.channelInfo() (~500ms each,
|
||||
// full InnerTube page scrape with JS eval) for the RSS feed
|
||||
// (~50-150ms each, tiny Atom XML). Same fan-out architecture,
|
||||
// ~5-10× faster. Avatar backfill is skipped on this path —
|
||||
// RSS doesn't carry avatars; the existing avatar lazy-loads
|
||||
// when the user taps into the channel screen.
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val outcome = withTimeoutOrNull(perChannelTimeoutMs) {
|
||||
runCatchingCancellable {
|
||||
val info = uniffi.strawcore.channelInfo(ch.url)
|
||||
// Opportunistic avatar refresh: if our stored ChannelRef
|
||||
// didn't capture an avatar at subscribe-time (channel
|
||||
// header parser missed it, or user subscribed before the
|
||||
// page loaded), backfill from the channel info now.
|
||||
val freshAvatar = info.avatar
|
||||
if (!freshAvatar.isNullOrBlank() && freshAvatar != ch.avatar) {
|
||||
runCatchingCancellable {
|
||||
Subscriptions.get().updateAvatar(ch.url, freshAvatar)
|
||||
}
|
||||
}
|
||||
info.videos.take(perChannelMax).map { v ->
|
||||
val videos = uniffi.strawcore.channelFeedRss(ch.url)
|
||||
videos.take(perChannelMax).map { v ->
|
||||
StreamItem(
|
||||
url = v.url,
|
||||
title = v.title.ifBlank { "(no title)" },
|
||||
uploader = v.uploader.ifBlank { ch.name },
|
||||
uploaderUrl = v.uploaderUrl ?: ch.url,
|
||||
thumbnail = v.thumbnail,
|
||||
// RSS doesn't carry duration or view count.
|
||||
// These backfill on tap-through when the user
|
||||
// opens the detail screen and we resolve full
|
||||
// streamInfo. 0 means "unknown" — the row
|
||||
// renderer hides the badges when 0.
|
||||
durationSeconds = v.durationSeconds,
|
||||
viewCount = v.viewCount,
|
||||
uploadDateRelative = v.uploadDateRelative,
|
||||
|
|
|
|||
|
|
@ -162,11 +162,15 @@ fun SearchScreen(
|
|||
modifier = Modifier.padding(bottom = 4.dp),
|
||||
)
|
||||
}
|
||||
val hideShorts by com.sulkta.straw.data.Settings.get().hideShorts.collectAsState()
|
||||
val filteredResults = remember(state.results, hideShorts) {
|
||||
com.sulkta.straw.util.applyContentFilters(state.results, hideShorts = hideShorts)
|
||||
}
|
||||
LazyColumn(
|
||||
modifier = Modifier.fillMaxSize(),
|
||||
contentPadding = rememberBottomContentPadding(),
|
||||
) {
|
||||
items(state.results) { item ->
|
||||
items(filteredResults) { item ->
|
||||
ResultRow(
|
||||
item = item,
|
||||
onClick = { onOpenVideo(item.url, item.title) },
|
||||
|
|
|
|||
|
|
@ -336,6 +336,33 @@ fun SettingsScreen() {
|
|||
onCheckedChange = { store.setAutoResume(it) },
|
||||
)
|
||||
}
|
||||
val hideShorts by store.hideShorts.collectAsState()
|
||||
Row(
|
||||
modifier = Modifier
|
||||
.fillMaxWidth()
|
||||
.padding(vertical = 6.dp),
|
||||
verticalAlignment = Alignment.CenterVertically,
|
||||
horizontalArrangement = Arrangement.SpaceBetween,
|
||||
) {
|
||||
Column(modifier = Modifier.weight(1f)) {
|
||||
Text(
|
||||
"Hide Shorts",
|
||||
style = MaterialTheme.typography.bodyLarge,
|
||||
fontWeight = FontWeight.SemiBold,
|
||||
)
|
||||
Text(
|
||||
"Drop /shorts/ URLs from search + channel pages " +
|
||||
"and best-effort filter (\"#shorts\" tag) on the " +
|
||||
"subs feed.",
|
||||
style = MaterialTheme.typography.bodySmall,
|
||||
color = MaterialTheme.colorScheme.onSurfaceVariant,
|
||||
)
|
||||
}
|
||||
Switch(
|
||||
checked = hideShorts,
|
||||
onCheckedChange = { store.setHideShorts(it) },
|
||||
)
|
||||
}
|
||||
|
||||
Spacer(modifier = Modifier.height(32.dp))
|
||||
Text(
|
||||
|
|
|
|||
|
|
@ -0,0 +1,60 @@
|
|||
/*
|
||||
* SPDX-FileCopyrightText: 2026 Sulkta-Coop
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later
|
||||
*
|
||||
* Heuristics for the hide-shorts / hide-paid / hide-age content filters.
|
||||
* Pure functions on StreamItem so any list-rendering site can call them
|
||||
* with one line at row-emit time.
|
||||
*
|
||||
* vc=56 ships only the shorts heuristic — paid/age require strawcore
|
||||
* flag plumbing landing in vc=57. The empty-stub fns are here so the
|
||||
* call sites we add now don't need to change when the flags arrive.
|
||||
*/
|
||||
|
||||
package com.sulkta.straw.util
|
||||
|
||||
import com.sulkta.straw.feature.search.StreamItem
|
||||
|
||||
/**
|
||||
* Best-effort short-video detector:
|
||||
* - URL pattern `/shorts/<id>` — reliable signal from search +
|
||||
* channel pages (strawcore preserves the original URL shape).
|
||||
* - Title contains `#shorts` / `#short` / "(shorts)" — fallback for
|
||||
* items where the URL is the canonical `watch?v=` form (RSS feed
|
||||
* items always come through this way).
|
||||
*/
|
||||
fun looksLikeShort(item: StreamItem): Boolean {
|
||||
if ("/shorts/" in item.url) return true
|
||||
val t = item.title.lowercase()
|
||||
return "#shorts" in t || "#short" in t || "(shorts)" in t
|
||||
}
|
||||
|
||||
/**
|
||||
* Placeholder until vc=57 adds an isPaid flag via strawcore-core.
|
||||
* Currently always false — the hide-paid toggle still shows up in
|
||||
* Settings so the user can pre-opt-in for when it lights up.
|
||||
*/
|
||||
fun looksLikePaid(@Suppress("UNUSED_PARAMETER") item: StreamItem): Boolean = false
|
||||
|
||||
/**
|
||||
* Placeholder until vc=57 adds an isAgeRestricted flag. Same shape
|
||||
* as looksLikePaid.
|
||||
*/
|
||||
fun looksLikeAgeRestricted(@Suppress("UNUSED_PARAMETER") item: StreamItem): Boolean = false
|
||||
|
||||
/**
|
||||
* Combined filter applied at row-emit. Returns the items to keep based
|
||||
* on the current Settings flags. Centralized here so the policy is
|
||||
* defined in one place; each calling LazyColumn just maps its source
|
||||
* list through this.
|
||||
*/
|
||||
fun applyContentFilters(
|
||||
items: List<StreamItem>,
|
||||
hideShorts: Boolean,
|
||||
hidePaid: Boolean = false,
|
||||
hideAgeRestricted: Boolean = false,
|
||||
): List<StreamItem> = items.filterNot { item ->
|
||||
(hideShorts && looksLikeShort(item)) ||
|
||||
(hidePaid && looksLikePaid(item)) ||
|
||||
(hideAgeRestricted && looksLikeAgeRestricted(item))
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue