Sulkta day-2: search → detail → player → SponsorBlock + RYD

Phase A: NewPipeExtractor + OkHttp Downloader wired in. Search bar + LazyColumn results. Tap = navigate to detail. Phase B: VideoDetail screen — StreamInfo metadata + Return YouTube Dislike chips + description. Phase C: Media3 ExoPlayer in Compose. Resolves StreamInfo to best playable: DASH MPD → HLS → combined progressive → merged videoOnly+audio. Phase D: SponsorBlock SHA-256 prefix lookup. 250ms position-poll loop inside PlayerScreen — exoPlayer.seekTo(segment.end) when entering a sponsor segment. Toast on skip. Phase E: Verified live on Android 14 emulator. linus tech tips search returns real results with thumbnails; tapped result opens detail; hit Play → video plays through ExoPlayer. Architecture: everything in :strawApp for now (not pushed into :shared yet — KMP refactor is day-3). Pure-state nav (sealed Screen + stack, no nav library). Known polish gaps (day-3): RYD chips render empty on some videos, description has raw HTML (markdown render needed), no Koin DI yet, no persistence. GPL-3.0-or-later per upstream NewPipe.
2026-05-23 19:22:52 -07:00 · 2026-05-23 19:22:52 -07:00 · 496ed30bda
commit 496ed30bda
parent ff4dc6f121
16 changed files with 1125 additions and 6 deletions
--- a/docs/sulkta/DAY2.md
+++ b/docs/sulkta/DAY2.md
@ -0,0 +1,79 @@
+# Straw day-2 — search → detail → player → SponsorBlock + RYD
+
+Loop pass through phases A → E in one session. Built on the day-1 `:strawApp`
+module without touching `:shared` or `:app`.
+
+## What landed
+
+| Phase | Component | Location |
+|---|---|---|
+| A | Search bar + LazyColumn results | `feature/search/Search{ViewModel,Screen}.kt` |
+| A | NewPipeExtractor + OkHttp Downloader | `extractor/NewPipeDownloader.kt`, `StrawApp.kt` |
+| B | Video detail screen + RYD chips | `feature/detail/VideoDetail{ViewModel,Screen}.kt` |
+| B | Return YouTube Dislike client | `net/RydClient.kt` |
+| C | Media3 ExoPlayer (DASH / HLS / progressive / merge fallback) | `feature/player/PlayerScreen.kt` |
+| C | Player view-model resolves StreamInfo | `feature/player/PlayerViewModel.kt` |
+| D | SponsorBlock client (SHA-256 prefix lookup) | `net/SponsorBlockClient.kt` |
+| D | Auto-skip via position-poll loop | inside `PlayerScreen.kt` |
+| E | Repo committed, APK rebuilt | this commit |
+
+## Navigation
+
+Home → Search → VideoDetail → Player.
+
+Pure-state nav (sealed `Screen` + `Navigator`, no nav library). Back button
+unwinds the stack; falling off the root exits the app. Day-3 will switch to
+`androidx-navigation3` to match upstream's KMP scaffold.
+
+## Architecture notes
+
+- **All code lives in `:strawApp` for now** — not pushed into `:shared`. The
+  KMP-skill canonical shape would be domain/data/presentation per feature in
+  `:shared/commonMain`. We'll refactor later; day-2 is about shipping the
+  vertical slice fast.
+- **No DI yet** — ViewModels are `viewModel()`-constructed with no
+  constructor args. Day-3 will introduce Koin for the OkHttp client,
+  RydClient, SponsorBlockClient.
+- **No persistence** — search history, watch history, subs all live in
+  memory and die on app close. Day-3 = Room/DataStore.
+- **No iOS/Desktop** — `:strawApp` is Android-only because NewPipeExtractor
+  is JVM-only. KMP-ification of the extractor is a multi-week project
+  upstream is presumably already eyeing.
+
+## Player path
+
+NewPipeExtractor returns a `StreamInfo` with a few possible playback shapes.
+We try them in this preference order:
+
+1. **DASH MPD URL** — `info.dashMpdUrl` → `DashMediaSource`. Best quality
+   when YouTube serves it.
+2. **HLS URL** — `info.hlsUrl` → `HlsMediaSource`. Mostly for live streams.
+3. **Combined video+audio** — `info.videoStreams.maxByBitrate` →
+   `ProgressiveMediaSource`. Rare on modern YouTube; older clients only.
+4. **Merged DASH-chunks** — `info.videoOnlyStreams.maxByBitrate` +
+   `info.audioStreams.maxByBitrate` → `MergingMediaSource`. The fallback.
+5. **Video-only** — last-resort, silent playback.
+
+## SponsorBlock auto-skip
+
+Phase D wires `SponsorBlockClient.fetch(videoId, ["sponsor"])` into
+`PlayerViewModel` and runs a 250ms position-poll loop in `PlayerScreen`
+that calls `exoPlayer.seekTo(segment.endSec * 1000)` when the playhead
+enters a segment. A Toast says `skipped <category>` each time.
+
+Categories default to `sponsor` only — matches siku2 defaults. User-settable
+categories are day-3.
+
+## Known limitations / day-3 items
+
+- ExoPlayer reuse across video changes: each VideoDetail → Player is a fresh
+  resolve. Quick navigation can leave stranded resolves.
+- No background audio / PiP.
+- No screen-rotation handling (config-changes are caught so the activity
+  isn't recreated, but the player UI doesn't lock landscape on play).
+- No watch history / subscriptions.
+- No channel browse / playlist browse.
+- No proxy / Tor support.
+- No "open with Straw" intent filter for YouTube URLs (low-hanging Day-3).
+- DI via Koin (skill recommends it).
+- Move logic into `:shared` per KMP best-practices.
--- a/strawApp/build.gradle.kts
+++ b/strawApp/build.gradle.kts
@ -2,8 +2,11 @@
 * SPDX-FileCopyrightText: 2026 Sulkta-Coop
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
- * :strawApp — thin Android application shell around :shared (the KMP Compose
- * code). Lives alongside the legacy :app module so we don't break it.
+ * :strawApp — thin Android application shell. Day-2: pulls NewPipeExtractor,
+ * Media3, Ktor-style HTTP-via-OkHttp + kotlinx-serialization JSON for the
+ * search → detail → player → SponsorBlock + RYD flow. We keep our deps in
+ * this module, NOT in the shared libs.versions.toml, so upstream NewPipe
+ * stays cleanly mergeable.
 */

 import com.android.build.api.dsl.ApplicationExtension
@ -56,13 +59,50 @@ configure<ApplicationExtension> {
        buildConfig = true
        resValues = true
    }
+
+    packaging {
+        resources {
+            excludes += setOf(
+                "META-INF/README.md",
+                "META-INF/CHANGES",
+                "META-INF/COPYRIGHT",
+                "META-INF/INDEX.LIST",
+                "META-INF/io.netty.versions.properties",
+            )
+        }
+    }
 }

 dependencies {
+    // Compose + AndroidX core
    implementation(libs.androidx.activity)
    implementation(libs.androidx.core)
    implementation(libs.jetbrains.compose.runtime)
    implementation(libs.jetbrains.compose.foundation)
    implementation(libs.jetbrains.compose.material3)
    implementation(libs.jetbrains.compose.ui)
+
+    // Lifecycle + ViewModel for Compose
+    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.10.0")
+    implementation("androidx.lifecycle:lifecycle-runtime-compose:2.10.0")
+
+    // Coroutines
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.11.0")
+
+    // Image loading
+    implementation(libs.coil.compose)
+    implementation(libs.coil.network.okhttp)
+
+    // NewPipeExtractor (JVM/Android-only) + its OkHttp dep
+    implementation(libs.newpipe.extractor)
+    implementation(libs.squareup.okhttp)
+
+    // JSON for SponsorBlock + Return YouTube Dislike clients
+    implementation(libs.kotlinx.serialization.json)
+
+    // Media3 ExoPlayer
+    implementation("androidx.media3:media3-exoplayer:1.4.1")
+    implementation("androidx.media3:media3-exoplayer-dash:1.4.1")
+    implementation("androidx.media3:media3-exoplayer-hls:1.4.1")
+    implementation("androidx.media3:media3-ui:1.4.1")
 }
--- a/strawApp/src/main/AndroidManifest.xml
+++ b/strawApp/src/main/AndroidManifest.xml
@ -5,10 +5,12 @@
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
+        android:name=".StrawApp"
        android:label="@string/app_name"
        android:icon="@android:drawable/sym_def_app_icon"
        android:roundIcon="@android:drawable/sym_def_app_icon"
        android:supportsRtl="true"
+        android:usesCleartextTraffic="true"
        android:theme="@android:style/Theme.Material.Light.NoActionBar">
        <activity
            android:name=".StrawActivity"
--- a/strawApp/src/main/kotlin/com/sulkta/straw/Nav.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/Nav.kt
@ -0,0 +1,40 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * Tiny in-app nav model — sealed Screen + a stack. No nav library; pure
+ * state. Good enough for day-2's home → search → detail → player flow.
+ */
+
+package com.sulkta.straw
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
+
+sealed interface Screen {
+    data object Home : Screen
+    data object Search : Screen
+    data class VideoDetail(val streamUrl: String, val title: String) : Screen
+    data class Player(val streamUrl: String, val title: String) : Screen
+}
+
+class Navigator(initial: Screen) {
+    val stack = mutableStateListOf<Screen>(initial)
+    val current: Screen get() = stack.last()
+
+    fun push(s: Screen) {
+        stack.add(s)
+    }
+
+    /** @return false if we couldn't pop (root), true otherwise. */
+    fun pop(): Boolean {
+        if (stack.size <= 1) return false
+        stack.removeAt(stack.lastIndex)
+        return true
+    }
+}
+
+@Composable
+fun rememberNavigator(initial: Screen = Screen.Home): Navigator =
+    remember { Navigator(initial) }
--- a/strawApp/src/main/kotlin/com/sulkta/straw/StrawActivity.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/StrawActivity.kt
@ -7,15 +7,20 @@ package com.sulkta.straw

 import android.os.Bundle
 import androidx.activity.ComponentActivity
+import androidx.activity.OnBackPressedCallback
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.ui.Modifier
-import androidx.compose.foundation.layout.fillMaxSize
+import com.sulkta.straw.feature.detail.VideoDetailScreen
+import com.sulkta.straw.feature.player.PlayerScreen
+import com.sulkta.straw.feature.search.SearchScreen

 class StrawActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
@ -25,7 +30,42 @@ class StrawActivity : ComponentActivity() {
            val scheme = if (isSystemInDarkTheme()) darkColorScheme() else lightColorScheme()
            MaterialTheme(colorScheme = scheme) {
                Surface(modifier = Modifier.fillMaxSize()) {
-                    StrawHome()
+                    val nav = rememberNavigator()
+
+                    DisposableEffect(nav) {
+                        val cb = object : OnBackPressedCallback(true) {
+                            override fun handleOnBackPressed() {
+                                if (!nav.pop()) {
+                                    isEnabled = false
+                                    this@StrawActivity.onBackPressedDispatcher.onBackPressed()
+                                }
+                            }
+                        }
+                        onBackPressedDispatcher.addCallback(cb)
+                        onDispose { cb.remove() }
+                    }
+
+                    when (val s = nav.current) {
+                        is Screen.Home -> StrawHome(
+                            onOpenSearch = { nav.push(Screen.Search) },
+                        )
+                        is Screen.Search -> SearchScreen(
+                            onOpenVideo = { url, title ->
+                                nav.push(Screen.VideoDetail(url, title))
+                            },
+                        )
+                        is Screen.VideoDetail -> VideoDetailScreen(
+                            streamUrl = s.streamUrl,
+                            initialTitle = s.title,
+                            onPlay = {
+                                nav.push(Screen.Player(s.streamUrl, s.title))
+                            },
+                        )
+                        is Screen.Player -> PlayerScreen(
+                            streamUrl = s.streamUrl,
+                            title = s.title,
+                        )
+                    }
                }
            }
        }
--- a/strawApp/src/main/kotlin/com/sulkta/straw/StrawApp.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/StrawApp.kt
@ -0,0 +1,23 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.sulkta.straw
+
+import android.app.Application
+import com.sulkta.straw.extractor.NewPipeDownloader
+import org.schabi.newpipe.extractor.NewPipe
+import org.schabi.newpipe.extractor.localization.ContentCountry
+import org.schabi.newpipe.extractor.localization.Localization
+
+class StrawApp : Application() {
+    override fun onCreate() {
+        super.onCreate()
+        NewPipe.init(
+            NewPipeDownloader.init(),
+            Localization("en", "US"),
+            ContentCountry("US"),
+        )
+    }
+}
--- a/strawApp/src/main/kotlin/com/sulkta/straw/StrawHome.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/StrawHome.kt
@ -11,6 +11,7 @@ import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Button
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
@ -19,7 +20,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp

@Composable
-fun StrawHome() {
+fun StrawHome(onOpenSearch: () -> Unit) {
    Column(
        modifier = Modifier
            .fillMaxSize()
@ -34,9 +35,13 @@ fun StrawHome() {
        )
        Spacer(modifier = Modifier.height(8.dp))
        Text(
-            text = "v0.1.0-day1 — Sulkta-Coop",
+            text = "v0.1.0 — Sulkta-Coop",
            style = MaterialTheme.typography.bodyMedium,
            color = MaterialTheme.colorScheme.onSurfaceVariant,
        )
+        Spacer(modifier = Modifier.height(48.dp))
+        Button(onClick = onOpenSearch) {
+            Text("Search YouTube")
+        }
    }
 }
--- a/strawApp/src/main/kotlin/com/sulkta/straw/extractor/NewPipeDownloader.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/extractor/NewPipeDownloader.kt
@ -0,0 +1,87 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * Minimal OkHttp-backed implementation of NewPipeExtractor's Downloader.
+ * No cookies, no recaptcha handling — anonymous browsing only. Modeled after
+ * NewPipe's DownloaderImpl but trimmed down for fork scope.
+ */
+
+package com.sulkta.straw.extractor
+
+import okhttp3.OkHttpClient
+import okhttp3.RequestBody
+import org.schabi.newpipe.extractor.downloader.Downloader
+import org.schabi.newpipe.extractor.downloader.Request
+import org.schabi.newpipe.extractor.downloader.Response
+import java.io.IOException
+import java.util.concurrent.TimeUnit
+
+class NewPipeDownloader private constructor(
+    private val client: OkHttpClient,
+) : Downloader() {
+
+    override fun execute(request: Request): Response {
+        val httpMethod = request.httpMethod()
+        val url = request.url()
+        val headers = request.headers()
+        val data: ByteArray? = request.dataToSend()
+
+        val requestBody: RequestBody? = if (data != null) {
+            RequestBody.create(null, data)
+        } else null
+
+        val okBuilder = okhttp3.Request.Builder()
+            .method(httpMethod, requestBody)
+            .url(url)
+            .addHeader("User-Agent", USER_AGENT)
+
+        headers.forEach { (name, values) ->
+            okBuilder.removeHeader(name)
+            values.forEach { okBuilder.addHeader(name, it) }
+        }
+
+        val okResponse = client.newCall(okBuilder.build()).execute()
+        val body = okResponse.body
+        val bodyString = body?.string() ?: ""
+        val responseHeaders = okResponse.headers.toMultimap()
+        val latestUrl = okResponse.request.url.toString()
+        if (okResponse.code == 429) {
+            okResponse.close()
+            throw IOException("HTTP 429 — rate limited")
+        }
+        okResponse.close()
+
+        return Response(
+            okResponse.code,
+            okResponse.message,
+            responseHeaders,
+            bodyString,
+            latestUrl,
+        )
+    }
+
+    companion object {
+        const val USER_AGENT =
+            "Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) " +
+                "Chrome/120.0.0.0 Mobile Safari/537.36"
+
+        @Volatile private var instance: NewPipeDownloader? = null
+
+        fun init(builder: OkHttpClient.Builder? = null): NewPipeDownloader {
+            val client = (builder ?: OkHttpClient.Builder())
+                .connectTimeout(30, TimeUnit.SECONDS)
+                .readTimeout(30, TimeUnit.SECONDS)
+                .writeTimeout(30, TimeUnit.SECONDS)
+                .build()
+            val d = NewPipeDownloader(client)
+            instance = d
+            return d
+        }
+
+        fun get(): NewPipeDownloader = instance
+            ?: error("NewPipeDownloader not initialized — call init() first")
+
+        fun client(): OkHttpClient = get().client
+    }
+}
--- a/strawApp/src/main/kotlin/com/sulkta/straw/feature/detail/VideoDetailScreen.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/feature/detail/VideoDetailScreen.kt
@ -0,0 +1,141 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.sulkta.straw.feature.detail
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.AssistChip
+import androidx.compose.material3.AssistChipDefaults
+import androidx.compose.material3.Button
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.lifecycle.viewmodel.compose.viewModel
+import coil3.compose.AsyncImage
+
+@Composable
+fun VideoDetailScreen(
+    streamUrl: String,
+    initialTitle: String,
+    onPlay: () -> Unit,
+    vm: VideoDetailViewModel = viewModel(),
+) {
+    val state by vm.ui.collectAsStateWithLifecycle()
+    LaunchedEffect(streamUrl) { vm.load(streamUrl) }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .verticalScroll(rememberScrollState())
+            .padding(16.dp),
+    ) {
+        when {
+            state.loading -> Box(
+                modifier = Modifier.fillMaxWidth().padding(top = 64.dp),
+                contentAlignment = Alignment.Center,
+            ) { CircularProgressIndicator() }
+
+            state.error != null -> Text(
+                "error: ${state.error}",
+                color = MaterialTheme.colorScheme.error,
+            )
+
+            else -> {
+                val d = state.detail ?: return@Column
+                AsyncImage(
+                    model = d.thumbnail,
+                    contentDescription = null,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .aspectRatio(16f / 9f)
+                        .clip(RoundedCornerShape(8.dp)),
+                )
+                Spacer(modifier = Modifier.height(12.dp))
+                Text(
+                    text = d.title,
+                    style = MaterialTheme.typography.titleLarge,
+                    fontWeight = FontWeight.SemiBold,
+                )
+                Spacer(modifier = Modifier.height(4.dp))
+                Text(
+                    text = d.uploader,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                )
+                Spacer(modifier = Modifier.height(12.dp))
+
+                // Engagement row: views + RYD likes/dislikes
+                Row(
+                    horizontalArrangement = Arrangement.spacedBy(8.dp),
+                    verticalAlignment = Alignment.CenterVertically,
+                ) {
+                    AssistChip(
+                        onClick = {},
+                        label = { Text(formatViews(d.viewCount)) },
+                    )
+                    d.ryd?.let { ryd ->
+                        AssistChip(
+                            onClick = {},
+                            label = { Text("👍 ${formatCount(ryd.likes)}") },
+                            colors = AssistChipDefaults.assistChipColors(
+                                labelColor = Color(0xFF2E7D32),
+                            ),
+                        )
+                        AssistChip(
+                            onClick = {},
+                            label = { Text("👎 ${formatCount(ryd.dislikes)}") },
+                            colors = AssistChipDefaults.assistChipColors(
+                                labelColor = Color(0xFFC62828),
+                            ),
+                        )
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(16.dp))
+                Button(onClick = onPlay) { Text("Play") }
+                Spacer(modifier = Modifier.height(16.dp))
+
+                Text("Description", style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold)
+                Spacer(modifier = Modifier.height(8.dp))
+                Text(
+                    text = d.description.take(2000),
+                    style = MaterialTheme.typography.bodySmall,
+                )
+            }
+        }
+    }
+}
+
+private fun formatCount(n: Long): String = when {
+    n >= 1_000_000_000 -> "%.1fB".format(n / 1_000_000_000.0)
+    n >= 1_000_000 -> "%.1fM".format(n / 1_000_000.0)
+    n >= 1_000 -> "%.1fK".format(n / 1_000.0)
+    else -> "$n"
+}
+
+private fun formatViews(v: Long): String = "${formatCount(v)} views"
--- a/strawApp/src/main/kotlin/com/sulkta/straw/feature/detail/VideoDetailViewModel.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/feature/detail/VideoDetailViewModel.kt
@ -0,0 +1,75 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.sulkta.straw.feature.detail
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.sulkta.straw.net.RydClient
+import com.sulkta.straw.net.RydVotes
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.schabi.newpipe.extractor.stream.StreamInfo
+
+data class VideoDetail(
+    val id: String,
+    val title: String,
+    val uploader: String,
+    val viewCount: Long,
+    val description: String,
+    val thumbnail: String?,
+    val ryd: RydVotes? = null,
+)
+
+data class VideoDetailUiState(
+    val loading: Boolean = true,
+    val detail: VideoDetail? = null,
+    val error: String? = null,
+    // Stored on success for handoff to player. Not in UI.
+    val streamInfo: StreamInfo? = null,
+)
+
+class VideoDetailViewModel : ViewModel() {
+    private val _ui = MutableStateFlow(VideoDetailUiState())
+    val ui: StateFlow<VideoDetailUiState> = _ui.asStateFlow()
+
+    fun load(streamUrl: String) {
+        if (_ui.value.detail != null || _ui.value.loading.not()) {
+            // Already loaded or already loading once
+        }
+        _ui.value = VideoDetailUiState(loading = true)
+        viewModelScope.launch {
+            try {
+                val info = withContext(Dispatchers.IO) { StreamInfo.getInfo(streamUrl) }
+                val videoId = info.id
+                val ryd = withContext(Dispatchers.IO) {
+                    runCatching { RydClient.fetch(videoId) }.getOrNull()
+                }
+                _ui.value = VideoDetailUiState(
+                    loading = false,
+                    detail = VideoDetail(
+                        id = videoId,
+                        title = info.name ?: "(no title)",
+                        uploader = info.uploaderName ?: "",
+                        viewCount = info.viewCount,
+                        description = info.description?.content ?: "",
+                        thumbnail = info.thumbnails?.firstOrNull()?.url,
+                        ryd = ryd,
+                    ),
+                    streamInfo = info,
+                )
+            } catch (t: Throwable) {
+                _ui.value = VideoDetailUiState(
+                    loading = false,
+                    error = t.message ?: t.javaClass.simpleName,
+                )
+            }
+        }
+    }
+}
--- a/strawApp/src/main/kotlin/com/sulkta/straw/feature/player/PlayerScreen.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/feature/player/PlayerScreen.kt
@ -0,0 +1,155 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * Phase C: Media3 PlayerView embedded in Compose.
+ * Phase D: SponsorBlock auto-skip wired in via position-poll loop.
+ */
+
+package com.sulkta.straw.feature.player
+
+import android.widget.Toast
+import androidx.annotation.OptIn
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.media3.common.MediaItem
+import androidx.media3.common.util.UnstableApi
+import androidx.media3.datasource.DefaultHttpDataSource
+import androidx.media3.exoplayer.ExoPlayer
+import androidx.media3.exoplayer.dash.DashMediaSource
+import androidx.media3.exoplayer.hls.HlsMediaSource
+import androidx.media3.exoplayer.source.MergingMediaSource
+import androidx.media3.exoplayer.source.ProgressiveMediaSource
+import androidx.media3.ui.PlayerView
+import com.sulkta.straw.extractor.NewPipeDownloader
+import com.sulkta.straw.net.SbSegment
+import kotlinx.coroutines.delay
+
+@OptIn(UnstableApi::class)
+@Composable
+fun PlayerScreen(
+    streamUrl: String,
+    title: String,
+    vm: PlayerViewModel = viewModel(),
+) {
+    val context = LocalContext.current
+    val state by vm.ui.collectAsStateWithLifecycle()
+    LaunchedEffect(streamUrl) { vm.resolve(streamUrl) }
+
+    val exoPlayer = remember {
+        ExoPlayer.Builder(context).build()
+    }
+
+    DisposableEffect(Unit) {
+        onDispose { exoPlayer.release() }
+    }
+
+    val resolved = state.resolved
+
+    LaunchedEffect(resolved) {
+        val r = resolved ?: return@LaunchedEffect
+        val dataSourceFactory = DefaultHttpDataSource.Factory()
+            .setUserAgent(NewPipeDownloader.USER_AGENT)
+            .setAllowCrossProtocolRedirects(true)
+
+        val source = when {
+            r.dashMpdUrl != null -> DashMediaSource.Factory(dataSourceFactory)
+                .createMediaSource(MediaItem.fromUri(r.dashMpdUrl))
+
+            r.hlsUrl != null -> HlsMediaSource.Factory(dataSourceFactory)
+                .createMediaSource(MediaItem.fromUri(r.hlsUrl))
+
+            r.combinedUrl != null -> ProgressiveMediaSource.Factory(dataSourceFactory)
+                .createMediaSource(MediaItem.fromUri(r.combinedUrl))
+
+            r.videoUrl != null && r.audioUrl != null -> {
+                val v = ProgressiveMediaSource.Factory(dataSourceFactory)
+                    .createMediaSource(MediaItem.fromUri(r.videoUrl))
+                val a = ProgressiveMediaSource.Factory(dataSourceFactory)
+                    .createMediaSource(MediaItem.fromUri(r.audioUrl))
+                MergingMediaSource(v, a)
+            }
+
+            r.videoUrl != null -> ProgressiveMediaSource.Factory(dataSourceFactory)
+                .createMediaSource(MediaItem.fromUri(r.videoUrl))
+
+            else -> null
+        }
+
+        if (source != null) {
+            exoPlayer.setMediaSource(source)
+            exoPlayer.prepare()
+            exoPlayer.playWhenReady = true
+        }
+    }
+
+    // SponsorBlock auto-skip — poll position every 250ms, seek past any segment.
+    LaunchedEffect(resolved?.segments) {
+        val segments = resolved?.segments ?: return@LaunchedEffect
+        if (segments.isEmpty()) return@LaunchedEffect
+        while (true) {
+            delay(250)
+            if (!exoPlayer.isPlaying) continue
+            val posSec = exoPlayer.currentPosition / 1000.0
+            val segment = pickActiveSegment(segments, posSec)
+            if (segment != null) {
+                exoPlayer.seekTo((segment.endSec * 1000).toLong())
+                Toast.makeText(
+                    context,
+                    "skipped ${segment.category}",
+                    Toast.LENGTH_SHORT,
+                ).show()
+            }
+        }
+    }
+
+    Box(
+        modifier = Modifier.fillMaxSize(),
+        contentAlignment = Alignment.Center,
+    ) {
+        when {
+            state.loading -> CircularProgressIndicator()
+
+            state.error != null -> Text(
+                "playback error: ${state.error}",
+                color = MaterialTheme.colorScheme.error,
+                modifier = Modifier.padding(16.dp),
+            )
+
+            resolved?.isPlayable != true -> Text(
+                "no playable stream found",
+                modifier = Modifier.padding(16.dp),
+            )
+
+            else -> AndroidView(
+                factory = { ctx ->
+                    PlayerView(ctx).apply {
+                        player = exoPlayer
+                        useController = true
+                    }
+                },
+                modifier = Modifier.fillMaxSize(),
+            )
+        }
+    }
+}
+
+/** Returns the segment whose interval contains [posSec], if any. */
+private fun pickActiveSegment(segments: List<SbSegment>, posSec: Double): SbSegment? =
+    segments.firstOrNull { posSec >= it.startSec && posSec < it.endSec }
--- a/strawApp/src/main/kotlin/com/sulkta/straw/feature/player/PlayerViewModel.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/feature/player/PlayerViewModel.kt
@ -0,0 +1,89 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.sulkta.straw.feature.player
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.sulkta.straw.net.SbSegment
+import com.sulkta.straw.net.SponsorBlockClient
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.schabi.newpipe.extractor.stream.StreamInfo
+
+data class ResolvedPlayback(
+    val title: String,
+    val videoUrl: String?,
+    val audioUrl: String?,
+    val combinedUrl: String?,
+    val dashMpdUrl: String?,
+    val hlsUrl: String?,
+    val segments: List<SbSegment> = emptyList(),
+) {
+    /** Have anything playable? */
+    val isPlayable: Boolean
+        get() = !combinedUrl.isNullOrBlank() || !videoUrl.isNullOrBlank() ||
+            !dashMpdUrl.isNullOrBlank() || !hlsUrl.isNullOrBlank()
+}
+
+data class PlayerUiState(
+    val loading: Boolean = true,
+    val resolved: ResolvedPlayback? = null,
+    val error: String? = null,
+)
+
+class PlayerViewModel : ViewModel() {
+    private val _ui = MutableStateFlow(PlayerUiState())
+    val ui: StateFlow<PlayerUiState> = _ui.asStateFlow()
+
+    fun resolve(streamUrl: String, sbCategories: List<String> = listOf("sponsor")) {
+        _ui.value = PlayerUiState(loading = true)
+        viewModelScope.launch {
+            try {
+                val info = withContext(Dispatchers.IO) { StreamInfo.getInfo(streamUrl) }
+                val videoId = info.id
+                val segments = withContext(Dispatchers.IO) {
+                    runCatching { SponsorBlockClient.fetch(videoId, sbCategories) }
+                        .getOrDefault(emptyList())
+                }
+
+                val combined = info.videoStreams
+                    ?.filter { it.content?.isNotBlank() == true }
+                    ?.maxByOrNull { it.bitrate ?: 0 }
+                    ?.content
+                val videoOnly = info.videoOnlyStreams
+                    ?.filter { it.content?.isNotBlank() == true }
+                    ?.maxByOrNull { it.bitrate ?: 0 }
+                    ?.content
+                val audioOnly = info.audioStreams
+                    ?.filter { it.content?.isNotBlank() == true }
+                    ?.maxByOrNull { it.bitrate ?: 0 }
+                    ?.content
+
+                _ui.value = PlayerUiState(
+                    loading = false,
+                    resolved = ResolvedPlayback(
+                        title = info.name ?: "",
+                        videoUrl = videoOnly,
+                        audioUrl = audioOnly,
+                        combinedUrl = combined,
+                        dashMpdUrl = info.dashMpdUrl?.takeIf { it.isNotBlank() },
+                        hlsUrl = info.hlsUrl?.takeIf { it.isNotBlank() },
+                        segments = segments,
+                    ),
+                )
+            } catch (t: Throwable) {
+                _ui.value = PlayerUiState(
+                    loading = false,
+                    error = t.message ?: t.javaClass.simpleName,
+                )
+            }
+        }
+    }
+}
--- a/strawApp/src/main/kotlin/com/sulkta/straw/feature/search/SearchScreen.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/feature/search/SearchScreen.kt
@ -0,0 +1,154 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.sulkta.straw.feature.search
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.lifecycle.viewmodel.compose.viewModel
+import coil3.compose.AsyncImage
+
+@Composable
+fun SearchScreen(
+    onOpenVideo: (url: String, title: String) -> Unit,
+    vm: SearchViewModel = viewModel(),
+) {
+    val state by vm.ui.collectAsStateWithLifecycle()
+
+    Column(modifier = Modifier.fillMaxSize().padding(16.dp)) {
+        OutlinedTextField(
+            value = state.query,
+            onValueChange = vm::onQueryChange,
+            label = { Text("Search YouTube") },
+            modifier = Modifier.fillMaxWidth(),
+            singleLine = true,
+            keyboardOptions = KeyboardOptions(imeAction = ImeAction.Search),
+            keyboardActions = KeyboardActions(onSearch = { vm.submit() }),
+        )
+
+        Spacer(modifier = Modifier.height(12.dp))
+
+        when {
+            state.loading -> Box(
+                modifier = Modifier.fillMaxSize(),
+                contentAlignment = Alignment.Center,
+            ) { CircularProgressIndicator() }
+
+            state.error != null -> Box(
+                modifier = Modifier.fillMaxSize().padding(16.dp),
+                contentAlignment = Alignment.Center,
+            ) {
+                Text(
+                    text = "error: ${state.error}",
+                    color = MaterialTheme.colorScheme.error,
+                )
+            }
+
+            state.results.isEmpty() && state.query.isNotBlank() -> Box(
+                modifier = Modifier.fillMaxSize(),
+                contentAlignment = Alignment.Center,
+            ) { Text("hit enter to search") }
+
+            else -> LazyColumn(modifier = Modifier.fillMaxSize()) {
+                items(state.results) { item ->
+                    ResultRow(item = item) { onOpenVideo(item.url, item.title) }
+                    HorizontalDivider()
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun ResultRow(item: StreamItem, onClick: () -> Unit) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(vertical = 10.dp),
+        verticalAlignment = Alignment.Top,
+    ) {
+        AsyncImage(
+            model = item.thumbnail,
+            contentDescription = null,
+            modifier = Modifier
+                .width(160.dp)
+                .height(90.dp)
+                .clip(RoundedCornerShape(6.dp)),
+        )
+        Spacer(modifier = Modifier.width(12.dp))
+        Column(modifier = Modifier.weight(1f)) {
+            Text(
+                text = item.title,
+                style = MaterialTheme.typography.bodyLarge,
+                fontWeight = FontWeight.SemiBold,
+                maxLines = 2,
+                overflow = TextOverflow.Ellipsis,
+            )
+            Spacer(modifier = Modifier.height(4.dp))
+            Text(
+                text = buildString {
+                    append(item.uploader)
+                    if (item.viewCount > 0) {
+                        append(" · ")
+                        append(formatViews(item.viewCount))
+                    }
+                    if (item.durationSeconds > 0) {
+                        append(" · ")
+                        append(formatDuration(item.durationSeconds))
+                    }
+                },
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+            )
+        }
+    }
+}
+
+private fun formatDuration(sec: Long): String {
+    val h = sec / 3600
+    val m = (sec % 3600) / 60
+    val s = sec % 60
+    return if (h > 0) "%d:%02d:%02d".format(h, m, s) else "%d:%02d".format(m, s)
+}
+
+private fun formatViews(views: Long): String = when {
+    views >= 1_000_000_000 -> "%.1fB views".format(views / 1_000_000_000.0)
+    views >= 1_000_000 -> "%.1fM views".format(views / 1_000_000.0)
+    views >= 1_000 -> "%.1fK views".format(views / 1_000.0)
+    else -> "$views views"
+}
--- a/strawApp/src/main/kotlin/com/sulkta/straw/feature/search/SearchViewModel.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/feature/search/SearchViewModel.kt
@ -0,0 +1,79 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.sulkta.straw.feature.search
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.schabi.newpipe.extractor.NewPipe
+import org.schabi.newpipe.extractor.ServiceList
+import org.schabi.newpipe.extractor.search.SearchInfo
+import org.schabi.newpipe.extractor.stream.StreamInfoItem
+
+data class SearchUiState(
+    val query: String = "",
+    val results: List<StreamItem> = emptyList(),
+    val loading: Boolean = false,
+    val error: String? = null,
+)
+
+data class StreamItem(
+    val url: String,
+    val title: String,
+    val uploader: String,
+    val thumbnail: String?,
+    val durationSeconds: Long,
+    val viewCount: Long,
+)
+
+class SearchViewModel : ViewModel() {
+    private val _ui = MutableStateFlow(SearchUiState())
+    val ui: StateFlow<SearchUiState> = _ui.asStateFlow()
+
+    fun onQueryChange(q: String) {
+        _ui.value = _ui.value.copy(query = q)
+    }
+
+    fun submit() {
+        val q = _ui.value.query.trim()
+        if (q.isEmpty()) return
+        _ui.value = _ui.value.copy(loading = true, error = null, results = emptyList())
+        viewModelScope.launch {
+            try {
+                val items = withContext(Dispatchers.IO) { search(q) }
+                _ui.value = _ui.value.copy(loading = false, results = items)
+            } catch (t: Throwable) {
+                _ui.value = _ui.value.copy(
+                    loading = false,
+                    error = t.message ?: t.javaClass.simpleName,
+                )
+            }
+        }
+    }
+
+    private fun search(query: String): List<StreamItem> {
+        val service = NewPipe.getService(ServiceList.YouTube.serviceId)
+        val qh = service.searchQHFactory.fromQuery(query, emptyList(), "")
+        val info = SearchInfo.getInfo(service, qh)
+        return info.relatedItems
+            .filterIsInstance<StreamInfoItem>()
+            .map {
+                StreamItem(
+                    url = it.url,
+                    title = it.name ?: "(no title)",
+                    uploader = it.uploaderName ?: "",
+                    thumbnail = it.thumbnails?.firstOrNull()?.url,
+                    durationSeconds = it.duration,
+                    viewCount = it.viewCount,
+                )
+            }
+    }
+}
--- a/strawApp/src/main/kotlin/com/sulkta/straw/net/RydClient.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/net/RydClient.kt
@ -0,0 +1,40 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * Return YouTube Dislike client.
+ * API: GET https://returnyoutubedislike.com/votes?videoId=<id>
+ */
+
+package com.sulkta.straw.net
+
+import com.sulkta.straw.extractor.NewPipeDownloader
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+import okhttp3.Request
+
+@Serializable
+data class RydVotes(
+    val id: String,
+    val likes: Long = 0,
+    val dislikes: Long = 0,
+    val rating: Double = 0.0,
+    val viewCount: Long = 0,
+)
+
+object RydClient {
+    private val json = Json { ignoreUnknownKeys = true; isLenient = true }
+
+    /** Blocking — call from Dispatchers.IO. */
+    fun fetch(videoId: String): RydVotes? {
+        val req = Request.Builder()
+            .url("https://returnyoutubedislike.com/votes?videoId=$videoId")
+            .header("User-Agent", NewPipeDownloader.USER_AGENT)
+            .build()
+        return NewPipeDownloader.client().newCall(req).execute().use { r ->
+            if (!r.isSuccessful) return@use null
+            val body = r.body?.string() ?: return@use null
+            runCatching { json.decodeFromString<RydVotes>(body) }.getOrNull()
+        }
+    }
+}
--- a/strawApp/src/main/kotlin/com/sulkta/straw/net/SponsorBlockClient.kt
+++ b/strawApp/src/main/kotlin/com/sulkta/straw/net/SponsorBlockClient.kt
@ -0,0 +1,70 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Sulkta-Coop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * SponsorBlock client — SHA-256 prefix lookup.
+ * API: GET https://sponsor.ajay.app/api/skipSegments/<prefix4>?categories=[...]
+ */
+
+package com.sulkta.straw.net
+
+import com.sulkta.straw.extractor.NewPipeDownloader
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+import okhttp3.Request
+import java.security.MessageDigest
+
+@Serializable
+data class SbVideoSegments(
+    val videoID: String,
+    val segments: List<SbSegment> = emptyList(),
+)
+
+@Serializable
+data class SbSegment(
+    val UUID: String? = null,
+    val category: String,
+    val segment: List<Double>,
+    val actionType: String? = null,
+) {
+    val startSec: Double get() = segment.getOrNull(0) ?: 0.0
+    val endSec: Double get() = segment.getOrNull(1) ?: 0.0
+}
+
+object SponsorBlockClient {
+    private val json = Json { ignoreUnknownKeys = true; isLenient = true }
+
+    /**
+     * Fetch SponsorBlock segments for [videoId] limited to [categories].
+     * Returns segments matching the exact video ID (the API returns matches
+     * for the prefix, so we filter client-side).
+     */
+    fun fetch(
+        videoId: String,
+        categories: List<String> = listOf("sponsor"),
+    ): List<SbSegment> {
+        val prefix = sha256Hex(videoId).substring(0, 4)
+        val urlStr = "https://sponsor.ajay.app/api/skipSegments/$prefix?" +
+            "categories=" + buildJsonArray(categories)
+        val req = Request.Builder()
+            .url(urlStr)
+            .header("User-Agent", NewPipeDownloader.USER_AGENT)
+            .build()
+        return NewPipeDownloader.client().newCall(req).execute().use { r ->
+            if (!r.isSuccessful) return@use emptyList()
+            val body = r.body?.string() ?: return@use emptyList()
+            val all = runCatching {
+                json.decodeFromString<List<SbVideoSegments>>(body)
+            }.getOrDefault(emptyList())
+            all.firstOrNull { it.videoID == videoId }?.segments.orEmpty()
+        }
+    }
+
+    private fun buildJsonArray(items: List<String>): String =
+        items.joinToString(",", prefix = "[", postfix = "]") { "\"$it\"" }
+
+    private fun sha256Hex(s: String): String {
+        val bytes = MessageDigest.getInstance("SHA-256").digest(s.toByteArray())
+        return bytes.joinToString("") { "%02x".format(it) }
+    }
+}