feat(hls): cross-post HLS upload as a kind-1 note

Adds an optional kind-1 TextNoteEvent companion to every HLS publish so
the upload shows up in the home feed (where most people scroll)
alongside the NIP-71 VideoHorizontalEvent/VideoVerticalEvent in the
dedicated video tab. The companion note's content is the title, the
description and the master playlist URL joined with blank lines so
Amethyst's rich-text parser renders the inline video player and
non-NIP-71 clients still see a clickable master.m3u8 link.

Orchestrator picks up a new suspend signAndPublishNote callback that
takes the note content and returns the signed event id. The note is
only signed after the NIP-71 publish succeeds, so a failed video
publish never produces an orphaned note. HlsPublishState.Success now
carries the nullable noteEventId, and the success screen offers a
"View note" primary button that navigates to Route.Note(noteEventId)
when set; otherwise it falls back to the existing "Done" button.

The form switch defaults to on and sits just below the content-warning
row. Turning it off leaves the noteEventId null in the final Success
state.

Production wiring uses TextNoteEvent.build(content) +
account.signer.sign + account.sendAutomatic, matching the existing
short-note publish path.

Two new orchestrator tests lock in the cross-post behaviour: one that
captures the note content and asserts it contains the title,
description and master URL, and one that verifies crossPostAsNote=false
never invokes the note callback and leaves noteEventId null.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/video/hls/HlsPublishOrchestrator.kt

@@ -41,6 +41,7 @@ data class HlsPublishRequest(
     val codec: VideoCodec,
     val server: ServerName,
     val durationSeconds: Int? = null,
+    val crossPostAsNote: Boolean = true,
 )
 
 /**
@@ -60,6 +61,7 @@ class HlsPublishOrchestrator(
     ) -> HlsBundle,
     private val buildUploader: (ServerName) -> HlsBlobUploader,
     private val signAndPublish: suspend (HlsVideoEventTemplate) -> String,
+    private val signAndPublishNote: suspend (content: String) -> String,
     private val workDirFactory: () -> File,
 ) {
     val state: StateFlow<HlsPublishState> = _state
@@ -96,7 +98,20 @@ class HlsPublishOrchestrator(
                 )
             val eventId = signAndPublish(template)
 
-            _state.value = HlsPublishState.Success(eventId = eventId, masterUrl = uploadResult.masterUrl)
+            val noteEventId =
+                if (request.crossPostAsNote) {
+                    val content = buildCompanionNoteContent(request, uploadResult.masterUrl)
+                    signAndPublishNote(content)
+                } else {
+                    null
+                }
+
+            _state.value =
+                HlsPublishState.Success(
+                    eventId = eventId,
+                    masterUrl = uploadResult.masterUrl,
+                    noteEventId = noteEventId,
+                )
         } catch (e: CancellationException) {
             _state.value = HlsPublishState.Failure(message = "Cancelled")
             throw e
@@ -110,4 +125,13 @@ class HlsPublishOrchestrator(
     }
 
     private fun contentWarningOrNull(request: HlsPublishRequest): String? = if (request.sensitiveContent) request.contentWarningReason else null
+
+    private fun buildCompanionNoteContent(
+        request: HlsPublishRequest,
+        masterUrl: String,
+    ): String =
+        listOf(request.title, request.description, masterUrl)
+            .map { it.trim() }
+            .filter { it.isNotEmpty() }
+            .joinToString("\n\n")
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/video/hls/HlsPublishOrchestratorFactory.kt

@@ -26,6 +26,7 @@ import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.service.uploads.hls.HlsBlobUploaderFactory
 import com.vitorpamplona.amethyst.service.uploads.hls.HlsTranscoder
 import com.vitorpamplona.amethyst.service.uploads.hls.HlsVideoEventTemplate
+import com.vitorpamplona.quartz.nip10Notes.TextNoteEvent
 import kotlinx.coroutines.flow.MutableStateFlow
 import java.io.File
 
@@ -67,6 +68,11 @@ fun createProductionHlsPublishOrchestrator(
             account.sendAutomatic(signed)
             signed.id
         },
+        signAndPublishNote = { content ->
+            val signed = account.signer.sign(TextNoteEvent.build(content))
+            account.sendAutomatic(signed)
+            signed.id
+        },
         workDirFactory = {
             File(context.cacheDir, "hls-${System.currentTimeMillis()}").apply { mkdirs() }
         },

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/video/hls/HlsPublishState.kt

@@ -38,6 +38,7 @@ sealed class HlsPublishState {
     data class Success(
         val eventId: String,
         val masterUrl: String,
+        val noteEventId: String? = null,
     ) : HlsPublishState()
 
     data class Failure(

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/video/hls/NewHlsVideoScreen.kt

@@ -79,6 +79,7 @@ import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.ui.components.TextSpinner
 import com.vitorpamplona.amethyst.ui.components.TitleExplainer
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
 import com.vitorpamplona.amethyst.ui.navigation.topbars.TopBarWithBackButton
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import kotlinx.collections.immutable.toImmutableList
@@ -318,6 +319,30 @@ private fun FormFields(vm: NewHlsVideoViewModel) {
         )
     }
 
+    Spacer(Modifier.height(8.dp))
+
+    // Cross-post as kind-1 note toggle
+    Row(
+        modifier = Modifier.fillMaxWidth(),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Column(modifier = Modifier.weight(1f)) {
+            Text(
+                text = stringResource(R.string.hls_cross_post_as_note),
+                style = MaterialTheme.typography.bodyLarge,
+            )
+            Text(
+                text = stringResource(R.string.hls_cross_post_as_note_explainer),
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+            )
+        }
+        Switch(
+            checked = vm.crossPostAsNote,
+            onCheckedChange = { vm.crossPostAsNote = it },
+        )
+    }
+
     Spacer(Modifier.height(16.dp))
 
     // Server picker — reads the user's configured Blossom servers from the account
@@ -587,14 +612,38 @@ private fun SuccessBody(
             color = MaterialTheme.colorScheme.onSurfaceVariant,
         )
         Spacer(Modifier.height(16.dp))
-        Button(
-            onClick = {
-                vm.reset()
-                nav.popBack()
-            },
-            modifier = Modifier.fillMaxWidth(),
-        ) {
-            Text(stringResource(R.string.hls_done))
+
+        val noteId = state.noteEventId
+        if (noteId != null) {
+            Button(
+                onClick = {
+                    vm.reset()
+                    nav.nav(Route.Note(noteId))
+                },
+                modifier = Modifier.fillMaxWidth(),
+            ) {
+                Text(stringResource(R.string.hls_view_note))
+            }
+            Spacer(Modifier.height(8.dp))
+            OutlinedButton(
+                onClick = {
+                    vm.reset()
+                    nav.popBack()
+                },
+                modifier = Modifier.fillMaxWidth(),
+            ) {
+                Text(stringResource(R.string.hls_done))
+            }
+        } else {
+            Button(
+                onClick = {
+                    vm.reset()
+                    nav.popBack()
+                },
+                modifier = Modifier.fillMaxWidth(),
+            ) {
+                Text(stringResource(R.string.hls_done))
+            }
         }
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/video/hls/NewHlsVideoViewModel.kt

@@ -63,6 +63,7 @@ open class NewHlsVideoViewModel : ViewModel() {
     var sensitiveContent by mutableStateOf(false)
     var contentWarningReason by mutableStateOf("")
     var useH265 by mutableStateOf(true)
+    var crossPostAsNote by mutableStateOf(true)
     var selectedServer by mutableStateOf<ServerName?>(null)
 
     private val _state = MutableStateFlow<HlsPublishState>(HlsPublishState.Idle)
@@ -146,6 +147,7 @@ open class NewHlsVideoViewModel : ViewModel() {
                 codec = codec,
                 server = server,
                 durationSeconds = sourceMetadata?.durationSeconds,
+                crossPostAsNote = crossPostAsNote,
             )
 
         currentJob =

amethyst/src/main/res/values/strings.xml

@@ -2112,6 +2112,8 @@
     <string name="hls_view_note">View note</string>
     <string name="hls_done">Done</string>
     <string name="hls_try_again">Try again</string>
+    <string name="hls_cross_post_as_note">Cross-post as note</string>
+    <string name="hls_cross_post_as_note_explainer">Also publish a regular Nostr note linking to the video so it shows in the home feed.</string>
 
     <string name="pack_actions_dialog_title">Pack Actions</string>
     <string name="list_actions_dialog_title">List Actions</string>

amethyst/src/test/java/com/vitorpamplona/amethyst/service/uploads/hls/HlsPublishOrchestratorTest.kt

@@ -98,6 +98,7 @@ class HlsPublishOrchestratorTest {
         description: String = "A test clip",
         sensitive: Boolean = false,
         warningReason: String = "",
+        crossPostAsNote: Boolean = false,
     ) = HlsPublishRequest(
         title = title,
         description = description,
@@ -105,6 +106,7 @@ class HlsPublishOrchestratorTest {
         contentWarningReason = warningReason,
         codec = VideoCodec.H265,
         server = server,
+        crossPostAsNote = crossPostAsNote,
     )
 
     @Test
@@ -119,6 +121,7 @@ class HlsPublishOrchestratorTest {
                     publishedTemplates += tpl
                     "signed-event-id"
                 },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )
 
@@ -161,6 +164,7 @@ class HlsPublishOrchestratorTest {
                     capturedDuringPublish += orchestrator.state.value
                     "event-id"
                 },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )
 
@@ -184,6 +188,7 @@ class HlsPublishOrchestratorTest {
                 runTranscode = { _, _, _ -> throw RuntimeException("decode failed") },
                 buildUploader = { CannedUploader() },
                 signAndPublish = { "never" },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )
 
@@ -204,6 +209,7 @@ class HlsPublishOrchestratorTest {
                     HlsBlobUploader { _, _ -> throw RuntimeException("server 500") }
                 },
                 signAndPublish = { "never" },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )
 
@@ -222,6 +228,7 @@ class HlsPublishOrchestratorTest {
                 runTranscode = { _, _, _ -> fakeBundle() },
                 buildUploader = { CannedUploader() },
                 signAndPublish = { throw RuntimeException("relay rejected") },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )
 
@@ -244,6 +251,7 @@ class HlsPublishOrchestratorTest {
                     captured += tpl
                     "event-id"
                 },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )
 
@@ -282,6 +290,7 @@ class HlsPublishOrchestratorTest {
                     captured += tpl
                     "event-id"
                 },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )
 
@@ -290,6 +299,68 @@ class HlsPublishOrchestratorTest {
         assertTrue(captured.single() is HlsVideoEventTemplate.Vertical)
     }
 
+    @Test
+    fun crossPostAsNoteInvokesSignAndPublishNoteWithTitleDescriptionAndMasterUrl() {
+        val capturedNoteContent = mutableListOf<String>()
+        val orchestrator =
+            HlsPublishOrchestrator(
+                _state = MutableStateFlow(HlsPublishState.Idle),
+                runTranscode = { _, _, _ -> fakeBundle() },
+                buildUploader = { CannedUploader() },
+                signAndPublish = { "video-event-id" },
+                signAndPublishNote = { content ->
+                    capturedNoteContent += content
+                    "note-event-id"
+                },
+                workDirFactory = { File(workDir, "work").apply { mkdirs() } },
+            )
+
+        runBlocking {
+            orchestrator.publish(
+                newRequest(
+                    title = "Sunset",
+                    description = "Golden hour",
+                    crossPostAsNote = true,
+                ),
+            )
+        }
+
+        assertEquals(1, capturedNoteContent.size)
+        val note = capturedNoteContent[0]
+        assertTrue("note missing title: $note", note.contains("Sunset"))
+        assertTrue("note missing description: $note", note.contains("Golden hour"))
+        assertTrue("note missing master url: $note", note.contains("https://cdn.test/"))
+
+        val final = orchestrator.state.value as HlsPublishState.Success
+        assertEquals("note-event-id", final.noteEventId)
+        assertEquals("video-event-id", final.eventId)
+    }
+
+    @Test
+    fun crossPostDisabledLeavesNoteEventIdNull() {
+        val noteCallbackInvocations = mutableListOf<String>()
+        val orchestrator =
+            HlsPublishOrchestrator(
+                _state = MutableStateFlow(HlsPublishState.Idle),
+                runTranscode = { _, _, _ -> fakeBundle() },
+                buildUploader = { CannedUploader() },
+                signAndPublish = { "video-event-id" },
+                signAndPublishNote = {
+                    noteCallbackInvocations += it
+                    "should-not-be-used"
+                },
+                workDirFactory = { File(workDir, "work").apply { mkdirs() } },
+            )
+
+        runBlocking {
+            orchestrator.publish(newRequest(crossPostAsNote = false))
+        }
+
+        assertEquals(0, noteCallbackInvocations.size)
+        val final = orchestrator.state.value as HlsPublishState.Success
+        assertEquals(null, final.noteEventId)
+    }
+
     @Test
     fun resetRestoresIdleState() {
         val orchestrator =
@@ -298,6 +369,7 @@ class HlsPublishOrchestratorTest {
                 runTranscode = { _, _, _ -> throw RuntimeException("boom") },
                 buildUploader = { CannedUploader() },
                 signAndPublish = { "never" },
+                signAndPublishNote = { "note-id" },
                 workDirFactory = { File(workDir, "work").apply { mkdirs() } },
             )