@@ -0,0 +1,1802 @@
1+package soy.iko.opencode.ui.chat
3+import android.app.Activity
4+import android.content.Intent
6+import android.speech.RecognizerIntent
7+import androidx.activity.compose.BackHandler
8+import androidx.activity.compose.rememberLauncherForActivityResult
9+import androidx.activity.result.PickVisualMediaRequest
10+import androidx.activity.result.contract.ActivityResultContracts
11+import androidx.compose.animation.AnimatedVisibility
12+import androidx.compose.foundation.clickable
13+import androidx.compose.foundation.layout.Arrangement
14+import androidx.compose.foundation.layout.Box
15+import androidx.compose.foundation.layout.Column
16+import androidx.compose.foundation.layout.FlowRow
17+import androidx.compose.foundation.layout.PaddingValues
18+import androidx.compose.foundation.layout.Row
19+import androidx.compose.foundation.layout.Spacer
20+import androidx.compose.foundation.layout.WindowInsets
21+import androidx.compose.foundation.layout.fillMaxSize
22+import androidx.compose.foundation.layout.fillMaxWidth
23+import androidx.compose.foundation.layout.imePadding
24+import androidx.compose.foundation.layout.navigationBars
25+import androidx.compose.foundation.layout.padding
26+import androidx.compose.foundation.layout.size
27+import androidx.compose.foundation.layout.union
28+import androidx.compose.foundation.layout.windowInsetsPadding
29+import androidx.compose.foundation.lazy.LazyColumn
30+import androidx.compose.foundation.lazy.items
31+import androidx.compose.foundation.lazy.rememberLazyListState
32+import androidx.compose.material.icons.Icons
33+import androidx.compose.material.icons.automirrored.filled.ArrowBack
34+import androidx.compose.material.icons.automirrored.filled.Send
35+import androidx.compose.material.icons.filled.Add
36+import androidx.compose.material.icons.filled.AutoAwesome
37+import androidx.compose.material.icons.filled.Delete
38+import androidx.compose.material.icons.filled.Description
39+import androidx.compose.material.icons.filled.Edit
40+import androidx.compose.material.icons.filled.KeyboardArrowDown
41+import androidx.compose.material.icons.filled.Mic
42+import androidx.compose.material.icons.filled.MoreVert
43+import androidx.compose.material.icons.filled.PhotoCamera
44+import androidx.compose.material.icons.filled.PhotoLibrary
45+import androidx.compose.material.icons.filled.Refresh
46+import androidx.compose.material.icons.filled.Restore
47+import androidx.compose.material.icons.filled.Stop
48+import androidx.compose.material3.AlertDialog
49+import androidx.compose.material3.Badge
50+import androidx.compose.material3.BadgedBox
51+import androidx.compose.material3.Button
52+import androidx.compose.material3.CircularProgressIndicator
53+import androidx.compose.material3.DropdownMenu
54+import androidx.compose.material3.DropdownMenuItem
55+import androidx.compose.material3.ExperimentalMaterial3Api
56+import androidx.compose.material3.ExtendedFloatingActionButton
57+import androidx.compose.material3.FloatingActionButton
58+import androidx.compose.material3.Icon
59+import androidx.compose.material3.IconButton
60+import androidx.compose.material3.MaterialTheme
61+import androidx.compose.material3.OutlinedTextField
62+import androidx.compose.material3.Scaffold
63+import androidx.compose.material3.SnackbarHost
64+import androidx.compose.material3.SnackbarHostState
65+import androidx.compose.material3.Surface
66+import androidx.compose.material3.Text
67+import androidx.compose.material3.TextButton
68+import androidx.compose.material3.TopAppBar
69+import androidx.compose.material3.pulltorefresh.PullToRefreshBox
70+import androidx.compose.runtime.Composable
71+import androidx.compose.runtime.CompositionLocalProvider
72+import androidx.compose.runtime.DisposableEffect
73+import androidx.compose.runtime.LaunchedEffect
74+import androidx.compose.runtime.derivedStateOf
75+import androidx.compose.runtime.getValue
76+import androidx.compose.runtime.mutableStateOf
77+import androidx.compose.runtime.remember
78+import androidx.compose.runtime.rememberCoroutineScope
79+import androidx.compose.runtime.rememberUpdatedState
80+import androidx.compose.runtime.saveable.rememberSaveable
81+import androidx.compose.runtime.setValue
82+import androidx.compose.runtime.snapshotFlow
83+import androidx.compose.foundation.text.KeyboardActions
84+import androidx.compose.foundation.text.KeyboardOptions
85+import androidx.compose.ui.text.input.KeyboardCapitalization
86+import androidx.compose.ui.Alignment
87+import androidx.compose.ui.Modifier
88+import androidx.compose.ui.focus.focusRequester
89+import androidx.compose.ui.input.key.Key
90+import androidx.compose.ui.input.key.KeyEventType
91+import androidx.compose.ui.input.key.isCtrlPressed
92+import androidx.compose.ui.input.key.isShiftPressed
93+import androidx.compose.ui.input.key.key
94+import androidx.compose.ui.input.key.onPreviewKeyEvent
95+import androidx.compose.ui.input.key.type
96+import androidx.compose.ui.platform.LocalContext
97+import androidx.compose.ui.platform.LocalHapticFeedback
98+import androidx.compose.ui.platform.LocalView
99+import androidx.compose.ui.platform.testTag
100+import androidx.compose.ui.res.stringResource
101+import androidx.compose.ui.semantics.Role
102+import androidx.compose.ui.semantics.contentDescription
103+import androidx.compose.ui.semantics.semantics
104+import androidx.compose.ui.text.input.ImeAction
105+import androidx.compose.ui.text.style.TextOverflow
106+import androidx.compose.ui.unit.dp
107+import androidx.lifecycle.compose.collectAsStateWithLifecycle
108+import androidx.lifecycle.viewmodel.compose.viewModel
109+import kotlinx.coroutines.Dispatchers
110+import kotlinx.coroutines.launch
111+import kotlinx.coroutines.withContext
112+import soy.iko.opencode.data.model.Part
113+import soy.iko.opencode.data.model.MessageWithParts
114+import soy.iko.opencode.data.model.ReasoningPart
115+import soy.iko.opencode.data.model.TextPart
116+import soy.iko.opencode.data.model.ToolCompleted
117+import soy.iko.opencode.data.model.ToolError
118+import soy.iko.opencode.data.model.ToolPart
119+import soy.iko.opencode.data.model.ToolRunning
120+import soy.iko.opencode.data.network.EventStreamClient
121+import soy.iko.opencode.data.network.NetworkConfig
122+import soy.iko.opencode.di.AppContainer
123+import soy.iko.opencode.R
124+import soy.iko.opencode.ui.components.CommandPalette
125+import soy.iko.opencode.ui.components.ConnectionBanner
126+import soy.iko.opencode.ui.components.PaletteAction
127+import soy.iko.opencode.ui.components.copyToClipboard
128+import soy.iko.opencode.ui.components.LocalRelativeTimeTick
129+import soy.iko.opencode.ui.components.rememberRelativeTimeTick
130+import soy.iko.opencode.ui.components.showToast
131+import soy.iko.opencode.ui.components.toImageContext
132+import soy.iko.opencode.ui.vmFactory
133+import soy.iko.opencode.util.runCatchingCancellable
135+@OptIn(ExperimentalMaterial3Api::class)
138+ container: AppContainer,
141+ onOpenFile: ((String) -> Unit)? = null,
142+ onOpenSession: ((String) -> Unit)? = null,
144+ val vm: ChatViewModel = viewModel(key = sessionId, factory = vmFactory { ChatViewModel(container, sessionId) })
145+ val hasMessages by vm.hasMessages.collectAsStateWithLifecycle()
146+ val running by vm.running.collectAsStateWithLifecycle()
147+ val aborting by vm.aborting.collectAsStateWithLifecycle()
148+ val loading by vm.loading.collectAsStateWithLifecycle()
149+ val loadError by vm.loadError.collectAsStateWithLifecycle()
150+ val refreshing by vm.refreshing.collectAsStateWithLifecycle()
151+ val models by vm.models.collectAsStateWithLifecycle()
152+ val modelsLoading by vm.modelsLoading.collectAsStateWithLifecycle()
153+ val modelsError by vm.modelsError.collectAsStateWithLifecycle()
154+ val selectedModel by vm.selectedModel.collectAsStateWithLifecycle()
155+ val connectionState by vm.connectionState.collectAsStateWithLifecycle()
156+ val pendingPermission by vm.pendingPermission.collectAsStateWithLifecycle()
157+ val agents by vm.agents.collectAsStateWithLifecycle()
158+ val agentsLoading by vm.agentsLoading.collectAsStateWithLifecycle()
159+ val agentsError by vm.agentsError.collectAsStateWithLifecycle()
160+ val selectedAgent by vm.selectedAgent.collectAsStateWithLifecycle()
161+ val commands by vm.commands.collectAsStateWithLifecycle()
162+ val commandsLoading by vm.commandsLoading.collectAsStateWithLifecycle()
163+ val commandsError by vm.commandsError.collectAsStateWithLifecycle()
164+ val sessionTitle by vm.sessionTitle.collectAsStateWithLifecycle()
165+ val sessionDeleted by vm.sessionDeleted.collectAsStateWithLifecycle()
166+ val draft by vm.draft.collectAsStateWithLifecycle()
167+ val attachments by vm.attachments.collectAsStateWithLifecycle()
168+ val reverted by vm.reverted.collectAsStateWithLifecycle()
169+ val shareUrl by vm.shareUrl.collectAsStateWithLifecycle()
170+ val reconnecting by vm.reconnecting.collectAsStateWithLifecycle()
171+ val sendOnEnter by container.settingsStore.sendOnEnter.collectAsStateWithLifecycle(initialValue = true)
172+ val isOnline by container.isOnline.collectAsStateWithLifecycle()
173+ val haptics = LocalHapticFeedback.current
174+ val scope = rememberCoroutineScope()
175+ val shareContext = LocalContext.current
176+ val defaultShareSubject = stringResource(R.string.share_subject)
177+ val sessionLabel = stringResource(R.string.session)
178+ val defaultModelLabel = stringResource(R.string.default_model)
179+ val subtitle = remember(selectedModel?.modelLabel, selectedAgent, defaultModelLabel) {
181+ append(selectedModel?.modelLabel ?: defaultModelLabel)
182+ selectedAgent?.let { append(" · $it") }
186+ // Connection profile (with auth) for rendering inline image attachments.
187+ // Collect as state so a server switch recomposes the image context.
188+ val activeConnection by container.activeConnection.collectAsStateWithLifecycle()
189+ val imageContext = remember(activeConnection?.profile) {
190+ activeConnection?.profile?.toImageContext()
193+ // Mark this session as read while the user is viewing it; clear on leave so new
194+ // background activity can badge it again.
195+ DisposableEffect(sessionId) {
196+ container.setCurrentSession(sessionId)
197+ onDispose { if (container.currentSession.value == sessionId) container.setCurrentSession(null) }
200+ // Navigate away when the session is deleted via SSE so the user isn't left
201+ // on a zombie screen showing a conversation that no longer exists. Surface a
202+ // toast (not a snackbar) because the screen is about to be popped — a snackbar
203+ // would be torn down before the user could read it, while a toast survives.
204+ // Covers both SSE-driven deletion (deleted on another device) and a user-
205+ // initiated delete from the chat overflow menu (deleteSession in ChatViewModel
206+ // sets the same flag on success).
207+ val deletedContext = LocalContext.current
208+ LaunchedEffect(sessionDeleted) {
209+ if (sessionDeleted) {
210+ showToast(deletedContext, deletedContext.getString(R.string.session_deleted_chat))
215+ val snackbar = remember { SnackbarHostState() }
216+ val retryLabel = stringResource(R.string.retry)
217+ val inputFocusRequester = remember { androidx.compose.ui.focus.FocusRequester() }
218+ var showModelPicker by rememberSaveable { mutableStateOf(false) }
219+ var showAgentPicker by rememberSaveable { mutableStateOf(false) }
220+ var showTitleMenu by rememberSaveable { mutableStateOf(false) }
221+ var showCommandPicker by rememberSaveable { mutableStateOf(false) }
222+ var showExitConfirm by rememberSaveable { mutableStateOf(false) }
223+ var showStopConfirm by rememberSaveable { mutableStateOf(false) }
224+ var showOverflowMenu by rememberSaveable { mutableStateOf(false) }
225+ var showRenameDialog by rememberSaveable { mutableStateOf(false) }
226+ var showDeleteDialog by rememberSaveable { mutableStateOf(false) }
227+ var showShellDialog by rememberSaveable { mutableStateOf(false) }
228+ var showPalette by rememberSaveable { mutableStateOf(false) }
230+ // Command-palette entries (keyboard-first: Ctrl+K). Labels resolved here so the remembered
231+ // action list doesn't need a Composable context. Actions map to the same handlers the
232+ // overflow menu drives, so the palette is a keyboard shortcut to them, not a parallel path.
233+ val paletteModelLabel = stringResource(R.string.palette_switch_model)
234+ val paletteAgentLabel = stringResource(R.string.palette_choose_agent)
235+ val paletteCommandLabel = stringResource(R.string.palette_run_command)
236+ val paletteSummarizeLabel = stringResource(R.string.palette_summarize)
237+ val paletteRenameLabel = stringResource(R.string.rename_session_chat)
238+ val paletteShellLabel = stringResource(R.string.run_shell_command)
239+ val paletteActions = remember(
240+ paletteModelLabel, paletteAgentLabel, paletteCommandLabel,
241+ paletteSummarizeLabel, paletteRenameLabel, paletteShellLabel, hasMessages, running,
244+ add(PaletteAction("model", paletteModelLabel) { showModelPicker = true })
245+ add(PaletteAction("agent", paletteAgentLabel) { showAgentPicker = true })
246+ add(PaletteAction("command", paletteCommandLabel) { showCommandPicker = true })
247+ if (hasMessages && !running) add(PaletteAction("summarize", paletteSummarizeLabel) { vm.summarize() })
248+ if (!running) add(PaletteAction("shell", paletteShellLabel) { showShellDialog = true })
249+ add(PaletteAction("rename", paletteRenameLabel) { showRenameDialog = true })
253+ // Keep the screen awake while the agent is working in *this* session. The foreground
254+ // service that holds process priority during a run is managed app-wide off
255+ // container.anyRunActive (see OpencodeApp) so it survives navigating away from the chat
256+ // mid-run — otherwise leaving the screen would drop priority and Doze could choke the
257+ // SSE stream before the completion notification fires.
258+ val currentView = LocalView.current
259+ val appContext = LocalContext.current.applicationContext
260+ DisposableEffect(running) {
261+ currentView.keepScreenOn = running
262+ onDispose { currentView.keepScreenOn = false }
265+ LaunchedEffect(Unit) {
266+ vm.errorEvents.collect { event ->
267+ // Only a failed *send* is retryable; attaching Retry to any other error (e.g. a
268+ // message-load failure) would silently re-submit the last prompt on tap.
269+ val result = if (event.retryable) {
270+ snackbar.showSnackbar(message = event.message, actionLabel = retryLabel)
272+ snackbar.showSnackbar(event.message)
274+ if (result == androidx.compose.material3.SnackbarResult.ActionPerformed) vm.retryFailed()
278+ // --- Attachments, voice, and share-link plumbing ---
279+ val attachTooLargeMsg = stringResource(R.string.attachment_too_large)
280+ val attachFailedMsg = stringResource(R.string.attachment_failed)
281+ val attachLimitMsg = stringResource(R.string.attachment_limit)
282+ val noCameraMsg = stringResource(R.string.no_camera_app)
283+ val noVoiceMsg = stringResource(R.string.no_voice_app)
284+ val voicePrompt = stringResource(R.string.voice_prompt)
285+ val linkCopiedMsg = stringResource(R.string.link_copied)
287+ // Count of picks currently being read + base64-encoded off the main thread, so the
288+ // composer can show a staging placeholder immediately (chips only materialize once done).
289+ var stagingCount by remember { mutableStateOf(0) }
291+ // Convert each picked Uri to a base64 attachment off the main thread, honoring the
292+ // per-prompt count cap and surfacing per-file errors without aborting the batch.
293+ fun stageUris(uris: List<Uri>) {
294+ if (uris.isEmpty()) return
299+ if (vm.attachments.value.size >= NetworkConfig.maxAttachments) {
300+ snackbar.showSnackbar(attachLimitMsg)
303+ when (val result = uri.toAttachmentResult(appContext)) {
304+ is AttachmentResult.Ok -> vm.addAttachment(result.attachment)
305+ AttachmentResult.TooLarge -> snackbar.showSnackbar(attachTooLargeMsg)
306+ AttachmentResult.Failed -> snackbar.showSnackbar(attachFailedMsg)
315+ val photoPicker = rememberLauncherForActivityResult(
316+ ActivityResultContracts.PickMultipleVisualMedia(NetworkConfig.maxAttachments),
317+ ) { uris -> stageUris(uris) }
319+ val filePicker = rememberLauncherForActivityResult(
320+ ActivityResultContracts.GetMultipleContents(),
321+ ) { uris -> stageUris(uris) }
323+ // Uri survives a config change mid-capture so the TakePicture result still resolves.
324+ var pendingCaptureUri by rememberSaveable { mutableStateOf<Uri?>(null) }
325+ val cameraLauncher = rememberLauncherForActivityResult(
326+ ActivityResultContracts.TakePicture(),
328+ val uri = pendingCaptureUri
329+ pendingCaptureUri = null
330+ if (success && uri != null) stageUris(listOf(uri))
333+ val voiceLauncher = rememberLauncherForActivityResult(
334+ ActivityResultContracts.StartActivityForResult(),
336+ if (result.resultCode == Activity.RESULT_OK) {
337+ val spoken = result.data
338+ ?.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)
340+ ?.takeIf { it.isNotBlank() }
341+ if (spoken != null) {
342+ // Append to the existing draft rather than replacing, so dictation adds to
343+ // whatever the user already typed.
344+ val current = vm.draft.value
345+ val combined = if (current.isBlank()) spoken else "$current $spoken"
346+ vm.updateDraft(combined.take(NetworkConfig.maxDraftLengthChars))
351+ fun launchCamera() {
352+ val uri = newCameraCaptureUri(appContext)
354+ scope.launch { snackbar.showSnackbar(attachFailedMsg) }
357+ pendingCaptureUri = uri
358+ runCatching { cameraLauncher.launch(uri) }
359+ .onFailure { pendingCaptureUri = null; scope.launch { snackbar.showSnackbar(noCameraMsg) } }
363+ val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH).apply {
364+ putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM)
365+ putExtra(RecognizerIntent.EXTRA_PROMPT, voicePrompt)
367+ runCatching { voiceLauncher.launch(intent) }
368+ .onFailure { scope.launch { snackbar.showSnackbar(noVoiceMsg) } }
371+ // A freshly-created share link is copied to the clipboard so the user can paste it right away.
372+ LaunchedEffect(Unit) {
373+ vm.shareLinkEvents.collect { url ->
374+ copyToClipboard(shareContext, "share", url)
375+ snackbar.showSnackbar(linkCopiedMsg)
379+ // Navigate to a session freshly branched from a message (branchFrom), once it's created.
380+ // Keyed on Unit (like the sibling one-shot collectors above): keying on the onOpenSession
381+ // lambda would cancel/restart this collector whenever the lambda's identity changes, risking
382+ // a dropped branch-navigation event in the gap.
383+ val branchedMsg = stringResource(R.string.branch_created)
384+ LaunchedEffect(Unit) {
385+ vm.branchEvents.collect { newId ->
386+ showToast(shareContext, branchedMsg)
387+ onOpenSession?.invoke(newId)
391+ // Stage images shared into the app (via the system share sheet) as attachments.
392+ // Keyed on pendingSharedMedia (not Unit) so the effect re-fires when new media arrives
393+ // while this ChatScreen is already composed — which happens in two-pane mode, where the
394+ // detail ChatScreen is persistent (keyed on sessionId) and a LaunchedEffect(Unit) would
395+ // only fire on first composition. consumePendingSharedMedia() atomically drains the
396+ // pending list (compareAndSet to empty), so re-firing on the now-empty value is a no-op.
397+ val pendingSharedMedia by container.pendingSharedMedia.collectAsStateWithLifecycle()
398+ LaunchedEffect(pendingSharedMedia) {
399+ val shared = container.consumePendingSharedMedia()
400+ if (shared.isNotEmpty()) stageUris(shared.map { Uri.parse(it) })
404+ if (vm.send(draft)) {
405+ // TextHandleMove (a light tick) is semantically right for a send commit;
406+ // LongPress is reserved for long-press/swipe gestures.
407+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
411+ BackHandler(enabled = running && !showModelPicker && !showAgentPicker && !showCommandPicker) { showExitConfirm = true }
414+ // Hardware-keyboard shortcuts (tablets / DeX / Chromebooks): Ctrl+K opens the command
415+ // palette; Escape closes it, or stops a run. onPreviewKeyEvent on the Scaffold root sees
416+ // events before the focused text field, but only Ctrl+K / Escape are consumed so normal
417+ // typing (and the composer's own Enter-to-send handling) is untouched.
418+ modifier = Modifier.onPreviewKeyEvent { ev ->
419+ if (ev.type != KeyEventType.KeyDown) return@onPreviewKeyEvent false
421+ ev.isCtrlPressed && ev.key == Key.K -> { showPalette = true; true }
422+ ev.key == Key.Escape && showPalette -> { showPalette = false; true }
423+ ev.key == Key.Escape && running && !showStopConfirm && !showExitConfirm -> {
424+ showStopConfirm = true; true
432+ val changeLabel = stringResource(R.string.change_model_agent)
433+ // The subtitle reads "model · agent", so tapping the title offers *both*
434+ // — a small menu picks which picker to open. Previously the tap went
435+ // straight to the model picker, leaving the agent changeable only via
436+ // the overflow menu despite the title implying otherwise.
440+ .clickable(enabled = models.isNotEmpty(), role = Role.Button) { showTitleMenu = true }
441+ .semantics(mergeDescendants = true) { contentDescription = changeLabel },
442+ verticalAlignment = Alignment.CenterVertically,
444+ Column(modifier = Modifier.weight(1f, fill = false)) {
445+ // maxLines=1 + Ellipsis so a long session title can't wrap and
446+ // push the top bar to multiple lines, shifting the whole layout.
448+ sessionTitle ?: sessionLabel,
450+ overflow = TextOverflow.Ellipsis,
454+ style = MaterialTheme.typography.labelSmall,
455+ color = MaterialTheme.colorScheme.onSurfaceVariant,
457+ overflow = TextOverflow.Ellipsis,
460+ // Visual affordance that the title is tappable; without it the
461+ // title is indistinguishable from plain text and the pickers are
462+ // effectively undiscoverable.
463+ if (models.isNotEmpty()) {
465+ Icons.Filled.KeyboardArrowDown,
466+ contentDescription = null,
467+ tint = MaterialTheme.colorScheme.onSurfaceVariant,
468+ modifier = Modifier.size(20.dp),
472+ DropdownMenu(expanded = showTitleMenu, onDismissRequest = { showTitleMenu = false }) {
474+ text = { Text(stringResource(R.string.palette_switch_model)) },
475+ enabled = !modelsLoading || models.isNotEmpty(),
476+ onClick = { showTitleMenu = false; showModelPicker = true },
479+ text = { Text(stringResource(R.string.palette_choose_agent)) },
480+ enabled = !agentsLoading || agents.isNotEmpty(),
481+ onClick = { showTitleMenu = false; showAgentPicker = true },
487+ IconButton(onClick = {
488+ if (running) showExitConfirm = true else onBack()
490+ Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(R.string.back))
494+ // At-a-glance run status in the top bar. When the user is scrolled
495+ // up (jump-to-latest FAB visible), the input-bar Stop button and the
496+ // trailing "working…" row are off-screen, so a top-bar spinner is the
497+ // only signal the agent is still working.
499+ val workingLabel = stringResource(R.string.working)
500+ CircularProgressIndicator(
501+ Modifier.size(18.dp).semantics { contentDescription = workingLabel },
505+ // Manual refresh: forces an SSE reconnect, which re-seeds messages
506+ // from REST. A recovery path when the stream silently drops and the
507+ // auto-reconnect re-seed is slow or fails. Shows a brief spinner as
508+ // immediate tap feedback — the SSE reconnect may not visibly change
509+ // the connection state when already Connected, so without it the tap
510+ // appears to do nothing.
511+ val refreshLabel = stringResource(R.string.refresh)
513+ onClick = { vm.refreshMessages() },
514+ enabled = activeConnection != null && !refreshing,
517+ CircularProgressIndicator(
518+ Modifier.size(18.dp).semantics { contentDescription = refreshLabel },
522+ Icon(Icons.Filled.Refresh, contentDescription = refreshLabel)
525+ // Overflow menu consolidates the less-frequent actions (share,
526+ // commands, agent, model, rename, delete) so the top bar stays
527+ // scannable on narrow phones — previously 5 icons crowded the bar
528+ // alongside the back button and tappable title. Catalog-loading
529+ // spinners stay inline (next to the overflow) so a load state is
530+ // visible without opening the menu.
531+ val moreLabel = stringResource(R.string.more)
532+ val loadingLabel = stringResource(R.string.loading)
533+ val shareLabel = stringResource(R.string.share_conversation)
534+ val commandsLabel = stringResource(R.string.commands)
535+ val agentLabel = stringResource(R.string.choose_agent)
536+ val modelLabel = stringResource(R.string.choose_model)
537+ val renameLabel = stringResource(R.string.rename_session_chat)
538+ val deleteLabel = stringResource(R.string.delete_session_chat)
539+ val createShareLabel = stringResource(R.string.create_share_link)
540+ val copyShareLabel = stringResource(R.string.copy_share_link)
541+ val stopShareLabel = stringResource(R.string.stop_sharing)
542+ val summarizeLabel = stringResource(R.string.summarize_conversation)
543+ val initLabel = stringResource(R.string.generate_agents_md)
544+ val shellLabel = stringResource(R.string.run_shell_command)
546+ IconButton(onClick = { showOverflowMenu = true }) {
547+ Icon(Icons.Filled.MoreVert, contentDescription = moreLabel)
550+ expanded = showOverflowMenu,
551+ onDismissRequest = { showOverflowMenu = false },
554+ text = { Text(shareLabel) },
555+ enabled = hasMessages,
557+ showOverflowMenu = false
559+ val md = withContext(Dispatchers.Default) {
560+ buildConversationMarkdown(vm.messages.value, sessionTitle)
562+ val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
563+ type = "text/markdown"
564+ putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
565+ putExtra(android.content.Intent.EXTRA_TEXT, md)
567+ runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareLabel)) }
568+ .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
573+ text = { Text(commandsLabel) },
574+ enabled = !commandsLoading || commands.isNotEmpty(),
575+ onClick = { showOverflowMenu = false; showCommandPicker = true },
578+ text = { Text(agentLabel) },
579+ enabled = !agentsLoading || agents.isNotEmpty(),
580+ onClick = { showOverflowMenu = false; showAgentPicker = true },
583+ text = { Text(modelLabel) },
584+ enabled = !modelsLoading || models.isNotEmpty(),
585+ onClick = { showOverflowMenu = false; showModelPicker = true },
587+ androidx.compose.material3.HorizontalDivider()
588+ // Session sharing: create a public link, copy an existing one, or revoke it.
589+ if (shareUrl == null) {
591+ text = { Text(createShareLabel) },
592+ enabled = hasMessages,
593+ onClick = { showOverflowMenu = false; vm.shareSession() },
597+ text = { Text(copyShareLabel) },
599+ showOverflowMenu = false
601+ copyToClipboard(shareContext, "share", it)
602+ scope.launch { snackbar.showSnackbar(linkCopiedMsg) }
607+ text = { Text(stopShareLabel) },
608+ onClick = { showOverflowMenu = false; vm.unshareSession() },
612+ text = { Text(summarizeLabel) },
613+ enabled = hasMessages && !running,
614+ onClick = { showOverflowMenu = false; vm.summarize() },
617+ text = { Text(initLabel) },
619+ onClick = { showOverflowMenu = false; vm.initProject() },
622+ text = { Text(shellLabel) },
624+ onClick = { showOverflowMenu = false; showShellDialog = true },
626+ androidx.compose.material3.HorizontalDivider()
628+ text = { Text(renameLabel) },
629+ onClick = { showOverflowMenu = false; showRenameDialog = true },
632+ text = { Text(deleteLabel, color = MaterialTheme.colorScheme.error) },
633+ onClick = { showOverflowMenu = false; showDeleteDialog = true },
636+ // While a catalog is initially loading (empty list + loading flag),
637+ // show a tiny inline spinner beside the overflow so the user can see
638+ // a load is in progress without opening the menu. Once loaded the
639+ // spinner disappears; the menu items are always enabled (tapping a
640+ // picker with no items shows the "no models/agents/commands" state).
641+ val catalogLoading = (commandsLoading && commands.isEmpty()) ||
642+ (agentsLoading && agents.isEmpty()) ||
643+ (modelsLoading && models.isEmpty())
644+ if (catalogLoading) {
645+ CircularProgressIndicator(
647+ .align(Alignment.TopEnd)
649+ .semantics { contentDescription = loadingLabel },
657+ snackbarHost = { SnackbarHost(snackbar) },
659+ val queuedFollowUp by vm.queuedFollowUp.collectAsStateWithLifecycle()
660+ val todoPlan by vm.todoPlan.collectAsStateWithLifecycle()
661+ val queuedOffline by vm.outbox.collectAsStateWithLifecycle()
662+ val outboxSending by container.outboxSending.collectAsStateWithLifecycle()
664+ // Pinned above the composer so the agent's plan and progress stay visible
665+ // while scrolled up mid-run; renders nothing when there's no plan.
666+ TodoPlanBar(todoPlan)
667+ AnimatedVisibility(visible = reverted) {
668+ RevertBanner(onUndo = { vm.unrevert() })
670+ AnimatedVisibility(visible = queuedOffline.isNotEmpty()) {
672+ count = queuedOffline.size,
673+ sending = outboxSending,
674+ onFlush = { vm.flushQueued() },
675+ onDiscard = { vm.discardAllQueued() },
680+ onValueChange = vm::updateDraft,
682+ aborting = aborting,
683+ enabled = activeConnection != null,
684+ sendOnEnter = sendOnEnter,
686+ onAbort = { showStopConfirm = true },
687+ queuedFollowUp = queuedFollowUp,
688+ onQueueFollowUp = vm::queueFollowUp,
689+ onCancelQueue = { vm.queueFollowUp("") },
690+ focusRequester = inputFocusRequester,
691+ attachments = attachments,
692+ staging = stagingCount > 0,
693+ onRemoveAttachment = vm::removeAttachment,
696+ PickVisualMediaRequest(ActivityResultContracts.PickVisualMedia.ImageOnly),
699+ onPickFile = { filePicker.launch("*/*") },
700+ onCamera = { launchCamera() },
701+ onVoice = { launchVoice() },
706+ // Collect messages inside the content lambda so streaming token updates
707+ // recompose only this subtree, not the top bar / input bar / 20+ other
708+ // state reads in the ChatScreen body.
709+ val messages by vm.messages.collectAsStateWithLifecycle()
710+ val listState = rememberLazyListState()
711+ val contentScope = rememberCoroutineScope()
712+ val timeTick = rememberRelativeTimeTick()
713+ // Group messages by day and interleave date separators so a long conversation
714+ // has visual "Today"/"Yesterday"/date breaks. Computed once per messages
715+ // emission (memoized) so a scroll-induced recomposition doesn't re-scan. Lives
716+ // outside the PullToRefreshBox so the auto-scroll effects below can reference
717+ // the same list the LazyColumn renders (separators shift the indices vs. the
718+ // raw messages list, so scroll targets must be in listItems space).
719+ val todayLabel = stringResource(R.string.today)
720+ val yesterdayLabel = stringResource(R.string.yesterday)
721+ val listItems = remember(messages, todayLabel, yesterdayLabel) {
722+ buildMessageListItems(messages, todayLabel, yesterdayLabel)
724+ // listItems is a plain (non-snapshot) local, rebuilt each recomposition. The
725+ // derivedStateOf and snapshotFlow lambdas below are created once (keyless
726+ // remember / LaunchedEffect(Unit)); reading `listItems` directly inside them
727+ // would capture the first composition's list — which is empty, since `messages`
728+ // starts empty — freezing it forever. That pinned isPinnedToBottom at true and
729+ // AutoScrollSignal.size at 0, breaking streaming auto-scroll and the
730+ // jump-to-latest FAB. rememberUpdatedState hands those lambdas a stable State
731+ // whose value tracks the latest list.
732+ val currentListItems by rememberUpdatedState(listItems)
734+ // New-content signal for the jump-to-latest FAB: set when content grows while the user
735+ // is scrolled away from the bottom, cleared once they return (see the collector below).
736+ var hasNewContent by remember { mutableStateOf(false) }
738+ val isPinnedToBottom by remember {
740+ val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
741+ // When a run is active, the LazyColumn has one trailing "__typing"
742+ // item after the last list item. Account for it so "pinned to bottom"
743+ // includes the working indicator — otherwise the pin check targets
744+ // listItems.lastIndex, the typing row sits just below the viewport,
745+ // and the user never sees the progress indicator even when pinned.
746+ val items = currentListItems
747+ val effectiveLast = if (running) items.size else items.lastIndex
748+ lastVisible >= effectiveLast || items.isEmpty()
752+ // Jump to the newest message once, when the conversation first loads. Guarded by a
753+ // saveable one-shot flag so it doesn't re-fire on recomposition after a config change
754+ // (rotation) — rememberLazyListState restores the user's scroll offset, and an
755+ // unconditional scrollToItem here would clobber it, snapping them back to the bottom.
756+ var didInitialScroll by rememberSaveable { mutableStateOf(false) }
757+ LaunchedEffect(listItems.isNotEmpty()) {
758+ if (listItems.isNotEmpty() && !didInitialScroll) {
759+ // When a run is active the LazyColumn has a trailing "__typing" row at
760+ // listItems.size; target it (not listItems.lastIndex) so deep-linking into a
761+ // running session lands truly pinned to bottom and streaming auto-scroll engages.
762+ listState.scrollToItem(if (running) listItems.size else listItems.lastIndex)
763+ didInitialScroll = true
767+ // When a run starts, the LazyColumn gains a trailing "__typing" row, so
768+ // effectiveLast jumps from listItems.lastIndex to listItems.size and the
769+ // isPinnedToBottom check flips to false the instant you send — freezing
770+ // auto-scroll. If the user was pinned to the last item just before the run
771+ // began, bring the typing row into view so the pin (and streaming follow) is
772+ // preserved. Guard on the raw last-visible index (isPinnedToBottom has already
773+ // recomputed to false by now) so we don't scroll when the user had scrolled up.
774+ LaunchedEffect(running) {
775+ if (running && listItems.isNotEmpty()) {
776+ val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
777+ if (lastVisible >= listItems.lastIndex) {
778+ runCatchingCancellable { listState.animateScrollToItem(listItems.size) }
783+ LaunchedEffect(Unit) {
787+ // Track list size + the streaming length of the last part so we auto-scroll
788+ // as content arrives, plus the pinned flag. A small data class with primitive
789+ // fields avoids the per-frame boxing that Triple<Int,Int,Boolean> pays
790+ // (snapshotFlow re-evaluates this lambda every snapshot), and reading only the
791+ // last part's length is O(1) vs. a sumOf over every part. Covering reasoning
792+ // and tool output — not just TextPart — keeps a pinned view following a long
793+ // reasoning/tool block while it streams (previously it stalled at 0).
794+ val lastLen = streamingContentLength(messages.lastOrNull()?.parts?.lastOrNull())
795+ AutoScrollSignal(currentListItems.size, lastLen, isPinnedToBottom)
796+ }.collect { signal ->
797+ if (signal.pinned) {
798+ // Back at the bottom: clear the new-content badge.
799+ hasNewContent = false
800+ if (signal.size > 0) {
801+ // Scroll to the effective last index, including the trailing
802+ // "__typing" row when a run is active so the working indicator
803+ // is brought into view (not just the last message).
804+ val items = currentListItems
805+ val target = if (running) items.size else items.lastIndex
806+ listState.scrollToItem(target)
808+ } else if (signal.size > prevSize || signal.lastTextLength > prevLen) {
809+ // Content arrived while scrolled up — badge the jump-to-latest FAB.
810+ hasNewContent = true
812+ prevSize = signal.size
813+ prevLen = signal.lastTextLength
817+ CompositionLocalProvider(LocalRelativeTimeTick provides timeTick) {
818+ // The bottomBar (ChatInputBar) already has imePadding, and the Scaffold's
819+ // content padding accounts for the bottomBar's raised height, so the message
820+ // list is already above the keyboard. Adding imePadding here would double-apply
821+ // the IME inset and push messages too far up.
822+ Box(modifier = Modifier.fillMaxSize().padding(padding)) {
823+ if (activeConnection == null) {
825+ modifier = Modifier.align(Alignment.Center).padding(24.dp),
826+ horizontalAlignment = Alignment.CenterHorizontally,
829+ stringResource(R.string.not_connected),
830+ color = MaterialTheme.colorScheme.error,
832+ Spacer(Modifier.size(12.dp))
833+ Button(onClick = { vm.reconnect() }, enabled = !reconnecting) {
835+ CircularProgressIndicator(
836+ Modifier.size(20.dp),
837+ color = MaterialTheme.colorScheme.onPrimary,
841+ Text(stringResource(R.string.reconnect))
847+ state = connectionState,
848+ modifier = Modifier.align(Alignment.TopCenter),
849+ isOnline = isOnline,
850+ // On a hard failure, retry by forcing an SSE reconnect (which
851+ // re-seeds from REST). refreshMessages is the right recovery path
852+ // when the connection is present but the stream died; reconnect()
853+ // is the path when the whole connection is gone (handled by the
854+ // separate "Not connected" state below).
855+ onRetry = { vm.refreshMessages() },
857+ if (loading && messages.isEmpty()) {
858+ val loadingLabel = stringResource(R.string.loading)
859+ CircularProgressIndicator(
861+ .align(Alignment.Center)
862+ .semantics { contentDescription = loadingLabel },
864+ } else if (loadError && messages.isEmpty()) {
865+ // A failed load with nothing to show. Distinct from the empty
866+ // conversation state below — the conversation isn't empty, it
867+ // failed to load, and offering "Start a conversation" here is
868+ // misleading. Offer a Retry instead, mirroring SessionListScreen.
870+ modifier = Modifier.align(Alignment.Center).padding(24.dp),
871+ horizontalAlignment = Alignment.CenterHorizontally,
874+ stringResource(R.string.load_messages_failed),
875+ color = MaterialTheme.colorScheme.error,
877+ Spacer(Modifier.size(12.dp))
878+ Button(onClick = { vm.refreshMessages() }) {
879+ Text(stringResource(R.string.retry))
882+ } else if (messages.isEmpty() && running) {
883+ // A run just started but no parts have arrived yet — the empty
884+ // list with only the trailing "working…" row looks broken, so
885+ // surface a clear starting state until the first part streams in.
886+ val workingText = stringResource(R.string.working)
888+ modifier = Modifier.align(Alignment.Center).padding(24.dp),
889+ horizontalAlignment = Alignment.CenterHorizontally,
891+ CircularProgressIndicator(Modifier.size(28.dp), strokeWidth = 3.dp)
892+ Spacer(Modifier.size(12.dp))
893+ Text(workingText, style = MaterialTheme.typography.bodyMedium, color = MaterialTheme.colorScheme.onSurfaceVariant)
895+ } else if (messages.isEmpty()) {
899+ // Focus the input so the user can edit the suggestion before
900+ // sending, instead of having to manually tap the field.
901+ runCatching { inputFocusRequester.requestFocus() }
903+ modifier = Modifier.align(Alignment.Center),
906+ // Pull-to-refresh wraps the message list so the user can force an SSE
907+ // reconnect + re-seed with the same gesture they use on the session and
908+ // file lists, instead of hunting for the top-bar refresh icon. The empty
909+ // / loading / error states above stay outside the PTR box since there's
910+ // no list content to pull against.
912+ isRefreshing = refreshing,
913+ onRefresh = { vm.refreshMessages() },
914+ modifier = Modifier.fillMaxSize(),
916+ val lastMessageId = messages.lastOrNull()?.info?.id
917+ // Text-to-speech for reading assistant replies aloud; shuts down when the
918+ // message list leaves composition.
919+ val tts = rememberTtsController()
920+ val speakingMessageId by tts.speakingId
923+ modifier = Modifier.fillMaxSize(),
924+ // Extra bottom padding reserves room for the jump-to-latest FAB so it
925+ // never floats over the last message.
926+ contentPadding = PaddingValues(
930+ bottom = 16.dp + NetworkConfig.chatListFabInsetDp.dp,
932+ verticalArrangement = Arrangement.spacedBy(16.dp),
937+ contentType = { it.contentType },
940+ is MessageListItem.Separator -> DateSeparator(item.label)
941+ is MessageListItem.Message -> {
942+ val message = item.message
943+ // Only the last (streaming) message needs isRunning — it drives the
944+ // reasoning-block spinner. Passing the live flag to every bubble
945+ // makes all visible messages recompose whenever a run starts or stops.
946+ val modelLabel = remember(message.info, models) {
947+ (message.info as? soy.iko.opencode.data.model.AssistantMessage)
948+ ?.let { resolveModelLabel(it, models) }
952+ isRunning = running && message.info.id == lastMessageId,
953+ imageContext = imageContext,
954+ modelLabel = modelLabel,
955+ onOpenFile = onOpenFile,
956+ onRevert = { vm.revertTo(message.info.id) },
958+ // editMessage reverts to before this message (hiding it and
959+ // everything after); the revert banner surfaces the rewind
960+ // with an Undo. Focus + scroll the composer into view like the
961+ // Quote action so the prefilled draft isn't off-screen.
962+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
963+ vm.editMessage(message.info.id, text)
964+ runCatching { inputFocusRequester.requestFocus() }
965+ contentScope.launch {
966+ runCatchingCancellable {
967+ listState.animateScrollToItem(listItems.lastIndex.coerceAtLeast(0))
971+ onSpeak = { text -> tts.toggle(message.info.id, text) },
972+ isSpeaking = message.info.id == speakingMessageId,
975+ runCatching { inputFocusRequester.requestFocus() }
977+ onBranch = { text -> vm.branchFrom(text) },
983+ item(key = "__typing") {
984+ val workingText = stringResource(R.string.working)
986+ verticalAlignment = Alignment.CenterVertically,
987+ modifier = Modifier.semantics {
988+ contentDescription = workingText
991+ CircularProgressIndicator(Modifier.size(16.dp), strokeWidth = 2.dp)
992+ Text(workingText, style = MaterialTheme.typography.labelMedium, modifier = Modifier.padding(start = 6.dp))
998+ // Jump-to-latest affordance when the user has scrolled away during a stream.
1000+ visible = !isPinnedToBottom && listItems.isNotEmpty(),
1001+ modifier = Modifier.align(Alignment.BottomEnd),
1003+ // Badge the FAB when new content arrived while the user was scrolled up, so
1004+ // they know there's something new to jump to (cleared once back at bottom).
1007+ if (hasNewContent) {
1008+ val newContentLabel = stringResource(R.string.new_messages)
1009+ Badge(modifier = Modifier.semantics { contentDescription = newContentLabel })
1012+ modifier = Modifier.padding(end = 16.dp, bottom = 16.dp),
1014+ ExtendedFloatingActionButton(
1016+ hasNewContent = false
1017+ if (listItems.isNotEmpty()) {
1018+ // Scroll to the effective last index, including the
1019+ // trailing "__typing" row when a run is active.
1020+ val target = if (running) listItems.size else listItems.lastIndex
1021+ contentScope.launch { runCatchingCancellable { listState.animateScrollToItem(target) } }
1024+ icon = { Icon(Icons.Filled.KeyboardArrowDown, contentDescription = stringResource(R.string.latest)) },
1025+ text = { Text(stringResource(R.string.latest)) },
1035+ if (showExitConfirm) {
1037+ onDismissRequest = { showExitConfirm = false },
1038+ title = { Text(stringResource(R.string.stop_and_exit_title)) },
1039+ text = { Text(stringResource(R.string.stop_and_exit_text)) },
1041+ TextButton(onClick = {
1042+ showExitConfirm = false
1043+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1046+ }) { Text(stringResource(R.string.stop_and_exit)) }
1049+ TextButton(onClick = { showExitConfirm = false }) { Text(stringResource(R.string.stay)) }
1054+ if (showStopConfirm) {
1056+ onDismissRequest = { showStopConfirm = false },
1057+ title = { Text(stringResource(R.string.stop_run_title)) },
1058+ text = { Text(stringResource(R.string.stop_run_text)) },
1060+ TextButton(onClick = {
1061+ showStopConfirm = false
1062+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1064+ }) { Text(stringResource(R.string.stop), color = MaterialTheme.colorScheme.error) }
1067+ TextButton(onClick = { showStopConfirm = false }) { Text(stringResource(R.string.cancel)) }
1072+ if (showRenameDialog) {
1073+ RenameSessionChatDialog(
1074+ initialTitle = sessionTitle ?: "",
1075+ onDismiss = { showRenameDialog = false },
1076+ onConfirm = { newName ->
1077+ showRenameDialog = false
1078+ vm.renameSession(newName)
1083+ if (showDeleteDialog) {
1085+ onDismissRequest = { showDeleteDialog = false },
1086+ title = { Text(stringResource(R.string.delete_session_chat_title)) },
1087+ text = { Text(stringResource(R.string.delete_session_chat_text, sessionTitle ?: sessionLabel)) },
1089+ TextButton(onClick = {
1090+ showDeleteDialog = false
1091+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
1093+ }) { Text(stringResource(R.string.delete), color = MaterialTheme.colorScheme.error) }
1096+ TextButton(onClick = { showDeleteDialog = false }) { Text(stringResource(R.string.cancel)) }
1101+ if (showShellDialog) {
1102+ ShellCommandDialog(
1103+ onDismiss = { showShellDialog = false },
1105+ showShellDialog = false
1111+ if (showModelPicker) {
1114+ selected = selectedModel,
1115+ loading = modelsLoading,
1116+ error = modelsError,
1117+ onSelect = { vm.selectModel(it) },
1118+ onRetry = { vm.reloadModels() },
1119+ onDismiss = { showModelPicker = false },
1123+ if (showAgentPicker) {
1126+ selected = selectedAgent,
1127+ loading = agentsLoading,
1128+ error = agentsError,
1129+ onSelect = { vm.selectAgent(it?.name) },
1130+ onRetry = { vm.reloadAgents() },
1131+ onDismiss = { showAgentPicker = false },
1135+ if (showCommandPicker) {
1136+ CommandPickerSheet(
1137+ commands = commands,
1138+ loading = commandsLoading,
1139+ error = commandsError,
1140+ onSelect = { vm.runCommand(it) },
1141+ onRetry = { vm.reloadCommands() },
1142+ onDismiss = { showCommandPicker = false },
1146+ pendingPermission?.let { permission ->
1148+ permission = permission,
1149+ onRespond = { response -> vm.respondPermission(permission, response) },
1154+ CommandPalette(actions = paletteActions, onDismiss = { showPalette = false })
1159+private fun ChatInputBar(
1161+ onValueChange: (String) -> Unit,
1165+ sendOnEnter: Boolean,
1166+ onSend: () -> Unit,
1167+ onAbort: () -> Unit,
1168+ queuedFollowUp: String?,
1169+ onQueueFollowUp: (String) -> Unit,
1170+ onCancelQueue: () -> Unit,
1171+ focusRequester: androidx.compose.ui.focus.FocusRequester,
1172+ attachments: List<PendingAttachment>,
1174+ onRemoveAttachment: (String) -> Unit,
1175+ onPickPhoto: () -> Unit,
1176+ onPickFile: () -> Unit,
1177+ onCamera: () -> Unit,
1178+ onVoice: () -> Unit,
1180+ // Sendable when there's text OR at least one attachment (an image-only prompt is valid).
1181+ val hasContent = value.isNotBlank() || attachments.isNotEmpty()
1182+ Surface(tonalElevation = 3.dp, modifier = Modifier.imePadding()) {
1183+ Column(modifier = Modifier.fillMaxWidth().windowInsetsPadding(WindowInsets.navigationBars)) {
1184+ // A queued follow-up replaces the Stop button with a "queued" chip so the
1185+ // user sees their message will be sent when the run finishes, and can cancel.
1186+ if (queuedFollowUp != null) {
1188+ modifier = Modifier
1190+ .padding(start = 12.dp, top = 6.dp, end = 4.dp),
1191+ verticalAlignment = Alignment.CenterVertically,
1193+ Column(modifier = Modifier.weight(1f)) {
1195+ stringResource(R.string.queued),
1196+ style = MaterialTheme.typography.labelSmall,
1197+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1201+ style = MaterialTheme.typography.bodySmall,
1202+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1204+ overflow = TextOverflow.Ellipsis,
1207+ TextButton(onClick = onCancelQueue, contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = 8.dp)) {
1208+ Text(stringResource(R.string.cancel))
1212+ // Staged attachments: horizontally-scrollable thumbnails/chips, each removable.
1213+ AttachmentStrip(attachments, onRemove = onRemoveAttachment, staging = staging)
1215+ modifier = Modifier.fillMaxWidth().padding(8.dp),
1216+ verticalAlignment = Alignment.Bottom,
1218+ // Attach menu: photo picker, camera, or any file.
1219+ var showAttachMenu by remember { mutableStateOf(false) }
1221+ IconButton(onClick = { showAttachMenu = true }, enabled = enabled) {
1222+ Icon(Icons.Filled.Add, contentDescription = stringResource(R.string.add_attachment))
1224+ DropdownMenu(expanded = showAttachMenu, onDismissRequest = { showAttachMenu = false }) {
1226+ leadingIcon = { Icon(Icons.Filled.PhotoLibrary, contentDescription = null) },
1227+ text = { Text(stringResource(R.string.attach_photo)) },
1228+ onClick = { showAttachMenu = false; onPickPhoto() },
1231+ leadingIcon = { Icon(Icons.Filled.PhotoCamera, contentDescription = null) },
1232+ text = { Text(stringResource(R.string.attach_camera)) },
1233+ onClick = { showAttachMenu = false; onCamera() },
1236+ leadingIcon = { Icon(Icons.Filled.Description, contentDescription = null) },
1237+ text = { Text(stringResource(R.string.attach_file)) },
1238+ onClick = { showAttachMenu = false; onPickFile() },
1242+ // Voice dictation: appends recognized speech to the draft.
1243+ IconButton(onClick = onVoice, enabled = enabled) {
1244+ Icon(Icons.Filled.Mic, contentDescription = stringResource(R.string.voice_input))
1248+ onValueChange = { v ->
1249+ // Cap input length so a huge paste can't stall the UI. Shares are
1250+ // capped separately in MainActivity; this guards typed/pasted drafts.
1251+ onValueChange(v.take(NetworkConfig.maxDraftLengthChars))
1253+ modifier = Modifier
1255+ .focusRequester(focusRequester)
1256+ .testTag("chat_input")
1257+ .onPreviewKeyEvent { event ->
1258+ if (event.type != KeyEventType.KeyDown || event.key != Key.Enter) return@onPreviewKeyEvent false
1259+ // With "Send on Enter" on, Enter sends (Shift+Enter newlines).
1260+ // With it off, Enter inserts a newline and Ctrl+Enter sends.
1261+ val send = enterShouldSend(
1263+ hasContent = hasContent,
1264+ sendOnEnter = sendOnEnter,
1265+ shift = event.isShiftPressed,
1266+ ctrl = event.isCtrlPressed,
1269+ if (running) onQueueFollowUp(value) else onSend()
1275+ placeholder = { Text(stringResource(R.string.message_placeholder)) },
1278+ // Show a "N / max" countdown once the draft crosses a high fraction of
1279+ // the cap, so the user knows a paste is about to be truncated instead
1280+ // of being silently cut off. Hidden for normal short prompts to avoid
1281+ // clutter under a typical one-line message.
1283+ val threshold = (NetworkConfig.maxDraftLengthChars * NetworkConfig.draftCountdownThresholdFraction).toInt()
1284+ if (value.length >= threshold) {
1287+ R.string.draft_chars_remaining,
1288+ NetworkConfig.maxDraftLengthChars - value.length,
1289+ NetworkConfig.maxDraftLengthChars,
1291+ style = MaterialTheme.typography.labelSmall,
1292+ color = if (value.length >= NetworkConfig.maxDraftLengthChars) MaterialTheme.colorScheme.error
1293+ else MaterialTheme.colorScheme.onSurfaceVariant,
1297+ keyboardOptions = KeyboardOptions(
1298+ // With send-on-Enter off, expose the platform default action so the soft
1299+ // keyboard shows a newline key (this is a multi-line field) instead of a
1300+ // Send action — otherwise the setting has no effect on soft keyboards and
1301+ // there's no way to type a newline. Hardware Enter is handled separately.
1302+ imeAction = if (sendOnEnter) ImeAction.Send else ImeAction.Default,
1303+ capitalization = KeyboardCapitalization.Sentences,
1305+ keyboardActions = KeyboardActions(onSend = {
1307+ // During a run the Send IME action queues a follow-up, but only when
1308+ // there's typed text — queuing "" would cancel an existing queued
1309+ // follow-up (see the Queue button gate). When not running, an
1310+ // attachment-only send is valid, so gate that path on hasContent.
1312+ if (value.isNotBlank()) onQueueFollowUp(value)
1313+ } else if (hasContent) {
1319+ ComposerTrailingButton(
1321+ aborting = aborting,
1322+ canSend = enabled && hasContent,
1323+ canQueue = enabled && value.isNotBlank(),
1326+ onQueue = { onQueueFollowUp(value) },
1333+/** Whether a hardware Enter keypress should send: never when disabled/empty; otherwise
1334+ * Enter sends (unless Shift) when send-on-Enter is on, else only Ctrl+Enter sends. */
1335+private fun enterShouldSend(
1337+ hasContent: Boolean,
1338+ sendOnEnter: Boolean,
1342+ !enabled || !hasContent -> false
1343+ sendOnEnter -> !shift
1347+/** The composer's trailing button: while a run is active a Stop (with in-flight spinner),
1348+ * preceded by a Queue button when the user has typed a follow-up; otherwise Send. Extracted so
1349+ * [ChatInputBar] stays under the complexity threshold. */
1351+private fun ComposerTrailingButton(
1356+ onSend: () -> Unit,
1357+ onAbort: () -> Unit,
1358+ onQueue: () -> Unit,
1361+ Row(verticalAlignment = Alignment.CenterVertically) {
1362+ // While a run is active the trailing action is Stop, so the only send affordance is
1363+ // the keyboard's IME action — which is a plain newline when "Send on Enter" is off.
1364+ // That leaves a touch-only user with the setting off no way to queue a follow-up
1365+ // (Ctrl+Enter needs a hardware keyboard). Surface an explicit Queue button whenever
1366+ // there's typed TEXT so queuing is always reachable, without changing the user's
1367+ // Enter-inserts-a-newline preference. Gate on typed text — not the send-oriented
1368+ // canSend, which is also true for an attachment-only composer — because queuing "" just
1369+ // calls setQueuedFollowUp(null), silently cancelling any already-queued follow-up and
1370+ // dropping the staged attachment (queued follow-ups don't carry attachments anyway).
1374+ modifier = Modifier.testTag("queue_button"),
1377+ Icons.AutoMirrored.Filled.Send,
1378+ contentDescription = stringResource(R.string.queue_followup),
1382+ // Show a spinner while the abort REST call is in flight so the user sees the stop
1383+ // was sent, and disable to prevent a double-tap.
1386+ enabled = !aborting,
1387+ modifier = Modifier.padding(start = 4.dp).testTag("stop_button"),
1390+ val stopLabel = stringResource(R.string.stop)
1391+ CircularProgressIndicator(
1392+ Modifier.size(18.dp).semantics { contentDescription = stopLabel },
1393+ strokeWidth = 2.dp,
1396+ Icon(Icons.Filled.Stop, contentDescription = stringResource(R.string.stop))
1404+ modifier = Modifier.padding(start = 4.dp).testTag("send_button"),
1406+ Icon(Icons.AutoMirrored.Filled.Send, contentDescription = stringResource(R.string.send))
1411+@OptIn(androidx.compose.foundation.layout.ExperimentalLayoutApi::class)
1413+private fun EmptyConversation(
1414+ onSuggestion: (String) -> Unit,
1415+ modifier: Modifier = Modifier,
1417+ // A few example prompts so a first-time user has a one-tap path to their first
1418+ // message instead of staring at a blank input. Tapping a chip fills the draft
1419+ // (without sending) so the user can edit it before sending.
1420+ val suggestions = remember {
1422+ R.string.empty_chat_suggest_1,
1423+ R.string.empty_chat_suggest_2,
1424+ R.string.empty_chat_suggest_3,
1428+ modifier = modifier.padding(32.dp),
1429+ horizontalAlignment = Alignment.CenterHorizontally,
1432+ Icons.Filled.AutoAwesome,
1433+ contentDescription = null,
1434+ modifier = Modifier.size(48.dp),
1435+ tint = MaterialTheme.colorScheme.onSurfaceVariant,
1437+ Spacer(Modifier.size(16.dp))
1439+ stringResource(R.string.empty_chat_title),
1440+ style = MaterialTheme.typography.titleMedium,
1442+ Spacer(Modifier.size(8.dp))
1444+ stringResource(R.string.empty_chat_hint),
1445+ style = MaterialTheme.typography.bodyMedium,
1446+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1448+ Spacer(Modifier.size(20.dp))
1449+ // Suggestion chips wrap across rows on narrow screens instead of stacking full-width,
1450+ // so a longer localized prompt doesn't push the chips off-screen on a phone.
1452+ modifier = Modifier.fillMaxWidth(),
1453+ horizontalArrangement = Arrangement.spacedBy(8.dp),
1454+ verticalArrangement = Arrangement.spacedBy(8.dp),
1456+ suggestions.forEach { resId ->
1457+ val text = stringResource(resId)
1458+ androidx.compose.material3.AssistChip(
1459+ onClick = { onSuggestion(text) },
1460+ label = { Text(text, style = MaterialTheme.typography.bodyMedium) },
1467+/** A banner shown while a revert checkpoint is active, offering an Undo (unrevert). */
1469+private fun RevertBanner(onUndo: () -> Unit) {
1471+ color = MaterialTheme.colorScheme.tertiaryContainer,
1472+ tonalElevation = 2.dp,
1473+ modifier = Modifier.fillMaxWidth(),
1476+ modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
1477+ verticalAlignment = Alignment.CenterVertically,
1478+ horizontalArrangement = Arrangement.SpaceBetween,
1480+ Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
1482+ Icons.Filled.Restore,
1483+ contentDescription = null,
1484+ tint = MaterialTheme.colorScheme.onTertiaryContainer,
1485+ modifier = Modifier.size(18.dp),
1488+ stringResource(R.string.reverted_banner),
1489+ style = MaterialTheme.typography.bodySmall,
1490+ color = MaterialTheme.colorScheme.onTertiaryContainer,
1491+ modifier = Modifier.padding(start = 8.dp),
1494+ TextButton(onClick = onUndo) { Text(stringResource(R.string.undo)) }
1499+/** A banner shown while messages composed offline are queued in the outbox, with a
1500+ * "Send now" nudge and a discard. Shows a spinner while the queue is flushing. */
1502+private fun OutboxBanner(
1505+ onFlush: () -> Unit,
1506+ onDiscard: () -> Unit,
1509+ color = MaterialTheme.colorScheme.secondaryContainer,
1510+ tonalElevation = 2.dp,
1511+ modifier = Modifier.fillMaxWidth(),
1514+ modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
1515+ verticalAlignment = Alignment.CenterVertically,
1516+ horizontalArrangement = Arrangement.SpaceBetween,
1518+ Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
1520+ CircularProgressIndicator(
1521+ Modifier.size(16.dp),
1522+ strokeWidth = 2.dp,
1523+ color = MaterialTheme.colorScheme.onSecondaryContainer,
1525+ Spacer(Modifier.size(8.dp))
1529+ stringResource(R.string.outbox_sending)
1531+ val res = if (count == 1) R.string.outbox_pending_one else R.string.outbox_pending_many
1532+ stringResource(res, count)
1534+ style = MaterialTheme.typography.bodySmall,
1535+ color = MaterialTheme.colorScheme.onSecondaryContainer,
1539+ TextButton(onClick = onFlush) { Text(stringResource(R.string.outbox_flush)) }
1540+ TextButton(onClick = onDiscard) {
1541+ Text(stringResource(R.string.outbox_discard_all), color = MaterialTheme.colorScheme.error)
1548+/** Prompt for a one-off shell command to run in the session's worktree. */
1550+private fun ShellCommandDialog(onDismiss: () -> Unit, onRun: (String) -> Unit) {
1551+ var command by rememberSaveable { mutableStateOf("") }
1553+ onDismissRequest = onDismiss,
1554+ title = { Text(stringResource(R.string.run_shell_command)) },
1558+ onValueChange = { command = it },
1559+ modifier = Modifier.fillMaxWidth(),
1560+ placeholder = { Text(stringResource(R.string.shell_command_hint)) },
1561+ label = { Text(stringResource(R.string.shell_command_label)) },
1563+ keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
1564+ keyboardActions = KeyboardActions(onDone = { if (command.isNotBlank()) onRun(command.trim()) }),
1569+ onClick = { if (command.isNotBlank()) onRun(command.trim()) },
1570+ enabled = command.isNotBlank(),
1571+ ) { Text(stringResource(R.string.run)) }
1573+ dismissButton = { TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) } },
1578+ * Change signal for the auto-scroll-on-stream watcher. Primitive fields avoid the
1579+ * boxing `Triple<Int, Int, Boolean>` would impose on every snapshot evaluation, and
1580+ * equality is structural so `snapshotFlow` emits only when something relevant changes.
1582+private data class AutoScrollSignal(val size: Int, val lastTextLength: Int, val pinned: Boolean)
1584+/** Length of the streaming content carried by [part], driving auto-scroll as it grows.
1585+ * Covers text, reasoning, and tool output so a pinned view keeps following non-text
1586+ * streaming, not just plain assistant text. O(1). */
1587+private fun streamingContentLength(part: Part?): Int = when (part) {
1588+ is TextPart -> part.text.length
1589+ is ReasoningPart -> part.text.length
1590+ is ToolPart -> when (val st = part.state) {
1591+ is ToolCompleted -> st.output?.length ?: 0
1592+ is ToolError -> st.error?.length ?: 0
1593+ is ToolRunning -> st.title?.length ?: 0
1599+/** Rename dialog for the currently-open session. Mirrors the SessionListScreen rename
1600+ * dialog but lives in the chat screen so the user can rename without backing out to
1601+ * the list. Pre-filled with the current title; the cap matches the list dialog. */
1603+private fun RenameSessionChatDialog(
1604+ initialTitle: String,
1605+ onDismiss: () -> Unit,
1606+ onConfirm: (String) -> Unit,
1608+ // Seed the field once (no key input) so a later external title change — e.g. opencode
1609+ // auto-generating a session title after the first prompt, arriving via SessionUpdated —
1610+ // doesn't re-initialize the box and discard the user's in-progress edit.
1611+ var title by rememberSaveable { mutableStateOf(initialTitle) }
1613+ onDismissRequest = onDismiss,
1614+ title = { Text(stringResource(R.string.rename_session_chat)) },
1618+ onValueChange = { v -> title = v.take(NetworkConfig.maxSessionTitleChars) },
1619+ modifier = Modifier.fillMaxWidth(),
1620+ placeholder = { Text(stringResource(R.string.session_title_hint)) },
1621+ label = { Text(stringResource(R.string.rename_session_chat)) },
1623+ keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
1624+ keyboardActions = KeyboardActions(onDone = { if (title.isNotBlank()) onConfirm(title.trim()) }),
1628+ TextButton(onClick = { if (title.isNotBlank()) onConfirm(title.trim()) }, enabled = title.isNotBlank()) {
1629+ Text(stringResource(R.string.save))
1633+ TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) }
1639+ * A single item in the chat message list — either a [Message] bubble or a day
1640+ * [Separator] inserted before the first message of a new day. The separator shifts
1641+ * the LazyColumn indices vs. the raw messages list, so scroll-target math must use
1642+ * the [List] of these items (not `messages.size`/`lastIndex`).
1644+private sealed interface MessageListItem {
1646+ val contentType: Any
1648+ data class Message(val message: MessageWithParts, override val key: Any) : MessageListItem {
1649+ override val contentType: Any get() = message.info::class
1652+ data class Separator(val label: String, val ordinal: Int) : MessageListItem {
1653+ // Key on the day-occurrence ordinal, not the label: two non-contiguous groups
1654+ // can share a label (e.g. an untimestamped message — empty label — between two
1655+ // same-day messages, or two untimestamped groups), and a label-only key would
1656+ // then collide, which makes LazyColumn throw on duplicate keys. The ordinal is
1657+ // stable for a given message ordering so slots aren't needlessly recreated.
1658+ override val key: Any get() = "sep_${ordinal}_$label"
1659+ // Separators share a contentType so the LazyColumn can recycle their slots.
1660+ override val contentType: Any get() = "separator"
1665+ * Build the interleaved list of [MessageListItem]s for the message list, inserting a
1666+ * [MessageListItem.Separator] before the first message of each new calendar day. Uses
1667+ * the message's `time.created` (falling back to `updated` then `completed`) to bucket.
1668+ * Messages with no timestamp are grouped under an empty-label separator only if they
1669+ * start the list, so a server that omits timestamps doesn't suppress the first divider.
1671+ * [todayLabel]/[yesterdayLabel] are resolved by the caller (a @Composable can't call
1672+ * stringResource from inside this plain function) and used for the "Today"/"Yesterday"
1673+ * labels; older days fall back to a locale-stable medium-date format.
1675+private fun buildMessageListItems(
1676+ messages: List<MessageWithParts>,
1677+ todayLabel: String,
1678+ yesterdayLabel: String,
1679+): List<MessageListItem> {
1680+ if (messages.isEmpty()) return emptyList()
1681+ val today = java.time.LocalDate.now(java.time.ZoneId.systemDefault())
1682+ val dateFmt = mediumDateFormat()
1683+ val result = ArrayList<MessageListItem>(messages.size + 4)
1684+ val seenKeys = HashSet<String>(messages.size * 2)
1685+ var lastDayKey: String? = null
1687+ var emptyIdOrdinal = 0
1689+ for (message in messages) {
1690+ val ts = message.info.time?.created ?: message.info.time?.updated ?: message.info.time?.completed
1691+ val dayKey = ts?.let { dayKey(it) } ?: ""
1692+ // Emit a separator before the very first message (so a leading un-timestamped message
1693+ // still gets the first divider, empty label and all), and thereafter only when crossing
1694+ // into a new NON-empty calendar day. An un-timestamped message mid-list (empty key)
1695+ // neither emits its own separator nor resets the day — otherwise a following same-day
1696+ // message would see a "" -> "<today>" transition and emit a duplicate "Today" header.
1697+ if (first || (dayKey.isNotEmpty() && dayKey != lastDayKey)) {
1698+ result.add(MessageListItem.Separator(dayLabel(dayKey, ts ?: 0L, today, todayLabel, yesterdayLabel, dateFmt), sepOrdinal++))
1700+ if (dayKey.isNotEmpty()) lastDayKey = dayKey
1702+ // Most messages have a unique non-empty id. An unrecognized-role message can carry an
1703+ // empty id — and the reducer intentionally keeps several such messages as distinct
1704+ // holders — so give each a stable synthetic key and defensively de-collide any remaining
1705+ // duplicate; otherwise LazyColumn throws on a duplicate key and the whole screen crashes.
1706+ var key = message.info.id.ifEmpty { "msg-empty-${emptyIdOrdinal++}" }
1707+ if (!seenKeys.add(key)) {
1709+ while (!seenKeys.add("$key#$suffix")) suffix++
1710+ key = "$key#$suffix"
1712+ result.add(MessageListItem.Message(message, key))
1718+ * A stable bucket key for a timestamp's calendar day (epoch-days as a string).
1720+ * [buildMessageListItems] re-runs on every streaming snapshot (the memo is keyed on the
1721+ * whole `messages` list, which must stay so the live message's fresh parts render), so a
1722+ * naive implementation would re-allocate an `Instant`/`ZonedDateTime`/`LocalDate` for
1723+ * every message on every token. Message timestamps are immutable once assigned, so we
1724+ * memoize the parse per epoch-millis: after the first snapshot, each unchanged message is
1725+ * a cheap hash lookup. Bounded LRU (access-order) caps memory; only touched on the main
1726+ * thread during composition, so the coarse lock is uncontended.
1728+private val dayKeyCache = object : LinkedHashMap<Long, String>(128, 0.75f, true) {
1729+ override fun removeEldestEntry(eldest: MutableMap.MutableEntry<Long, String>): Boolean = size > 1024
1732+private fun dayKey(epochMillis: Long): String = synchronized(dayKeyCache) {
1733+ dayKeyCache.getOrPut(epochMillis) {
1734+ java.time.Instant.ofEpochMilli(epochMillis)
1735+ .atZone(java.time.ZoneId.systemDefault()).toLocalDate().toEpochDay().toString()
1739+// The medium-date formatter is an ICU locale lookup; cache one instance instead of
1740+// allocating a fresh one per buildMessageListItems call, rebuilding only if the default
1741+// locale changes at runtime. Main-thread-only, so no synchronization is needed.
1742+private var cachedDateFmt: java.text.DateFormat? = null
1743+private var cachedDateFmtLocale: java.util.Locale? = null
1745+private fun mediumDateFormat(): java.text.DateFormat {
1746+ val locale = java.util.Locale.getDefault()
1747+ val existing = cachedDateFmt
1748+ if (existing != null && cachedDateFmtLocale == locale) return existing
1749+ return java.text.DateFormat.getDateInstance(java.text.DateFormat.MEDIUM).also {
1751+ cachedDateFmtLocale = locale
1756+ * Resolve a day-key back to a human-readable label. "Today" / "Yesterday" for the
1757+ * recent days, otherwise a locale-stable medium-date format. Returns an empty string
1758+ * when [dayKey] is empty (no timestamp) so no separator is rendered for un-timestamped
1761+private fun dayLabel(
1764+ today: java.time.LocalDate,
1765+ todayLabel: String,
1766+ yesterdayLabel: String,
1767+ dateFmt: java.text.DateFormat,
1769+ if (dayKey.isEmpty()) return ""
1770+ val epochDay = dayKey.toLongOrNull() ?: return ""
1771+ val date = java.time.LocalDate.ofEpochDay(epochDay)
1773+ date == today -> todayLabel
1774+ date == today.minusDays(1) -> yesterdayLabel
1775+ else -> dateFmt.format(java.util.Date(ts))
1780+ * A centered day divider in the message list. Renders nothing for an empty label
1781+ * (the no-timestamp case) so un-timestamped messages don't get a stray blank divider.
1784+private fun DateSeparator(label: String) {
1785+ if (label.isBlank()) return
1787+ modifier = Modifier.fillMaxWidth(),
1788+ horizontalArrangement = Arrangement.Center,
1791+ color = MaterialTheme.colorScheme.surfaceVariant,
1792+ shape = MaterialTheme.shapes.small,
1796+ style = MaterialTheme.typography.labelSmall,
1797+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1798+ modifier = Modifier.padding(horizontal = 12.dp, vertical = 4.dp),