@@ -1,57 +1,37 @@
11package soy.iko.opencode.ui.screens
22
3−import android.content.ClipData
4−import android.content.ClipboardManager
5−import android.content.Context
6−import android.widget.Toast
73import androidx.compose.animation.AnimatedVisibility
8−import androidx.compose.animation.core.RepeatMode
9−import androidx.compose.animation.core.animateFloat
10−import androidx.compose.animation.core.infiniteRepeatable
11−import androidx.compose.animation.core.rememberInfiniteTransition
12−import androidx.compose.animation.core.tween
134import androidx.compose.animation.fadeIn
145import androidx.compose.animation.fadeOut
156import androidx.compose.animation.scaleIn
167import androidx.compose.animation.scaleOut
17−import androidx.compose.foundation.ExperimentalFoundationApi
188import androidx.compose.foundation.background
199import androidx.compose.foundation.clickable
20−import androidx.compose.foundation.combinedClickable
2110import androidx.compose.foundation.layout.Arrangement
2211import androidx.compose.foundation.layout.Box
2312import androidx.compose.foundation.layout.BoxScope
2413import androidx.compose.foundation.layout.Column
2514import androidx.compose.foundation.layout.Row
26−import androidx.compose.foundation.layout.Spacer
2715import androidx.compose.foundation.layout.fillMaxSize
2816import androidx.compose.foundation.layout.fillMaxWidth
29−import androidx.compose.foundation.layout.heightIn
3017import androidx.compose.foundation.layout.PaddingValues
31−import androidx.compose.foundation.layout.WindowInsets
32−import androidx.compose.foundation.layout.ime
3318import androidx.compose.foundation.layout.imePadding
3419import androidx.compose.foundation.layout.padding
3520import androidx.compose.foundation.layout.size
3621import androidx.compose.foundation.lazy.LazyColumn
37−import androidx.compose.foundation.lazy.itemsIndexed
22+import androidx.compose.foundation.lazy.items
3823import androidx.compose.foundation.lazy.rememberLazyListState
3924import androidx.compose.foundation.shape.CircleShape
40−import androidx.compose.foundation.shape.RoundedCornerShape
4125import androidx.compose.foundation.text.KeyboardActions
4226import androidx.compose.foundation.text.KeyboardOptions
4327import androidx.compose.material.icons.Icons
4428import androidx.compose.material.icons.automirrored.filled.ArrowBack
4529import androidx.compose.material.icons.automirrored.filled.Send
46−import androidx.compose.material.icons.filled.ChatBubbleOutline
47−import androidx.compose.material.icons.filled.Close
4830import androidx.compose.material.icons.filled.KeyboardArrowDown
49−import androidx.compose.material.icons.filled.KeyboardArrowUp
5031import androidx.compose.material.icons.filled.Stop
5132import androidx.compose.material3.CircularProgressIndicator
5233import androidx.compose.material3.ExperimentalMaterial3Api
5334import androidx.compose.material3.FilledIconButton
54−import androidx.compose.material3.FilledTonalButton
5535import androidx.compose.material3.FloatingActionButton
5636import androidx.compose.material3.Icon
5737import androidx.compose.material3.IconButton
@@ -61,7 +41,6 @@ import androidx.compose.material3.OutlinedTextField
6141import androidx.compose.material3.Scaffold
6242import androidx.compose.material3.Surface
6343import androidx.compose.material3.Text
64−import androidx.compose.material3.TextButton
6544import androidx.compose.material3.TopAppBar
6645import androidx.compose.runtime.Composable
6746import androidx.compose.runtime.LaunchedEffect
@@ -75,13 +54,8 @@ import androidx.compose.ui.Alignment
7554import androidx.compose.ui.Modifier
7655import androidx.compose.ui.draw.clip
7756import androidx.compose.ui.hapticfeedback.HapticFeedbackType
78−import androidx.compose.ui.platform.LocalClipboardManager
79−import androidx.compose.ui.platform.LocalContext
80−import androidx.compose.ui.platform.LocalDensity
8157import androidx.compose.ui.platform.LocalHapticFeedback
82−import androidx.compose.ui.text.font.FontStyle
8358import androidx.compose.ui.text.input.ImeAction
84−import androidx.compose.ui.text.style.TextAlign
8559import androidx.compose.ui.text.style.TextOverflow
8660import androidx.compose.ui.unit.dp
8761import kotlinx.coroutines.launch
@@ -89,17 +63,11 @@ import soy.iko.opencode.core.Event
8963import soy.iko.opencode.core.UiState
9064import soy.iko.opencode.ui.components.MessageBubble
9165
92−@OptIn(ExperimentalMaterial3Api::class, ExperimentalFoundationApi::class)
66+@OptIn(ExperimentalMaterial3Api::class)
9367@Composable
9468fun ChatScreen(state: UiState, dispatch: (Event) -> Unit) {
9569 val listState = rememberLazyListState()
9670 val coroutineScope = rememberCoroutineScope()
97− val context = LocalContext.current
98−
99− // Hide the jump-to-bottom FAB while the keyboard is up: it would otherwise
100− // sit over the top of the IME. Reading the ime inset bottom during composition
101− // observes snapshot state, so this flips as the keyboard opens/closes.
102− val isImeVisible = WindowInsets.ime.getBottom(LocalDensity.current) > 0
10371
10472 // Show a jump-to-bottom button once the user scrolls up away from the latest
10573 // message. derivedStateOf keeps this from recomposing on every pixel of scroll —
@@ -113,12 +81,6 @@ fun ChatScreen(state: UiState, dispatch: (Event) -> Unit) {
11381 }
11482 }
11583
116− // Offer a jump-to-top shortcut once the conversation is long and the user has
117− // scrolled a few messages down — saves flick-scrolling back through history.
118− val showScrollTop by remember {
119− derivedStateOf { state.messages.size > 10 && listState.firstVisibleItemIndex > 3 }
120− }
121−
12284 // Track how many messages the user has "seen" (i.e. was at the bottom for). While
12385 // they're scrolled up, any messages beyond that count are unseen — flag the FAB.
12486 var lastSeenCount by remember { mutableStateOf(0) }
@@ -148,20 +110,11 @@ fun ChatScreen(state: UiState, dispatch: (Event) -> Unit) {
148110 topBar = {
149111 TopAppBar(
150112 title = {
151− val title = state.currentSessionTitle.ifEmpty { "Chat" }
152113 Text(
153− text = if (state.messages.isNotEmpty()) "$title (${state.messages.size})" else title,
114+ text = state.currentSessionTitle.ifEmpty { "Chat" },
154115 maxLines = 1,
155116 overflow = TextOverflow.Ellipsis,
156− modifier = Modifier.combinedClickable(
157− onClick = { dispatch(Event.NavigateToSessions) },
158− onLongClick = {
159− state.currentSessionId?.let { id ->
160− copyToClipboard(context, id)
161− Toast.makeText(context, "Session ID copied", Toast.LENGTH_SHORT).show()
162− }
163− },
164− ),
117+ modifier = Modifier.clickable { dispatch(Event.NavigateToSessions) },
165118 )
166119 },
167120 navigationIcon = {
@@ -183,7 +136,6 @@ fun ChatScreen(state: UiState, dispatch: (Event) -> Unit) {
183136 ChatInputBar(
184137 draft = state.draft,
185138 generating = state.generating,
186− loading = state.loading && state.messages.isEmpty(),
187139 onDraftChange = { dispatch(Event.DraftChanged(it)) },
188140 onSend = { dispatch(Event.SendMessage(state.draft)) },
189141 onStop = { dispatch(Event.CancelGeneration) },
@@ -197,86 +149,35 @@ fun ChatScreen(state: UiState, dispatch: (Event) -> Unit) {
197149 if (state.loading && state.messages.isEmpty()) {
198150 LinearProgressIndicator(Modifier.fillMaxWidth())
199151 }
200− if (state.error != null && state.messages.isNotEmpty()) {
201− ErrorBanner(
202− message = state.error,
203− onDismiss = { dispatch(Event.DismissError) },
204− )
205− }
206152 Box(Modifier.fillMaxWidth().weight(1f)) {
207153 if (state.messages.isEmpty() && !state.loading) {
208− Column(
154+ Text(
155+ text = "Send a message to start the conversation.",
156+ style = MaterialTheme.typography.bodyMedium,
157+ color = MaterialTheme.colorScheme.onSurfaceVariant,
209158 modifier = Modifier.align(Alignment.Center).padding(32.dp),
210− horizontalAlignment = Alignment.CenterHorizontally,
211− ) {
212− Icon(
213− Icons.Filled.ChatBubbleOutline,
214− contentDescription = null,
215− modifier = Modifier.size(48.dp),
216− tint = MaterialTheme.colorScheme.primary.copy(alpha = 0.5f),
217− )
218− Spacer(Modifier.size(16.dp))
219− Text(
220− text = "Send a message to start the conversation.",
221− style = MaterialTheme.typography.bodyMedium,
222− color = MaterialTheme.colorScheme.onSurfaceVariant,
223− textAlign = TextAlign.Center,
224− )
225− }
159+ )
226160 }
227161 LazyColumn(
228162 state = listState,
229163 modifier = Modifier.fillMaxSize(),
230164 contentPadding = PaddingValues(vertical = 8.dp),
231165 ) {
232− itemsIndexed(state.messages, key = { _, message -> message.id }) { index, message ->
233− // Insert a date separator whenever a message falls on a different
234− // calendar day than the one before it (and above the first message).
235− val previous = state.messages.getOrNull(index - 1)
236− if (shouldShowDateSeparator(previous, message)) {
237− DateSeparator(message.time)
238− }
239− val sameSenderAsPrevious = index > 0 && state.messages[index - 1].isUser == message.isUser
240− MessageBubble(
241− message,
242− onRetry = { dispatch(Event.SendMessage(message.text)) },
243− compactSpacing = sameSenderAsPrevious,
244− )
245− }
246− // While the assistant is spinning up but hasn't emitted a streaming
247− // message yet (only the user's message is present), show a typing
248− // indicator so the wait doesn't look like a stall.
249− if (state.generating && state.messages.none { it.streaming }) {
250− item(key = "typing-indicator") {
251− TypingIndicator()
252− }
166+ items(state.messages, key = { it.id }) { message ->
167+ MessageBubble(message)
253168 }
254169 }
255170 ScrollToBottomButton(
256− visible = showScrollButton && !isImeVisible,
171+ visible = showScrollButton,
257172 showBadge = hasUnseenMessages,
258173 onClick = {
259174 coroutineScope.launch {
260175 if (state.messages.isNotEmpty()) {
261− // When the typing indicator is showing it occupies the item
262− // just past the last message, so scroll one further to reach it.
263− val target = if (state.generating && state.messages.none { it.streaming })
264− state.messages.size
265− else
266− state.messages.size - 1
267− listState.animateScrollToItem(target)
176+ listState.animateScrollToItem(state.messages.size - 1)
268177 }
269178 }
270179 },
271180 )
272− ScrollToTopButton(
273− visible = showScrollTop,
274− onClick = {
275− coroutineScope.launch {
276− listState.animateScrollToItem(0)
277− }
278− },
279− )
280181 }
281182 }
282183 }
@@ -316,123 +217,6 @@ private fun BoxScope.ScrollToBottomButton(visible: Boolean, showBadge: Boolean,
316217 }
317218}
318219
319−// Mirror of ScrollToBottomButton, pinned to the top-start corner. Same BoxScope
320−// extension trick so the top-level AnimatedVisibility overload resolves cleanly.
321−@Composable
322−private fun BoxScope.ScrollToTopButton(visible: Boolean, onClick: () -> Unit) {
323− AnimatedVisibility(
324− visible = visible,
325− modifier = Modifier.align(Alignment.TopStart),
326− enter = scaleIn() + fadeIn(),
327− exit = scaleOut() + fadeOut(),
328− ) {
329− Box(Modifier.padding(16.dp)) {
330− FloatingActionButton(
331− onClick = onClick,
332− modifier = Modifier.size(44.dp),
333− ) {
334− Icon(
335− Icons.Filled.KeyboardArrowUp,
336− contentDescription = "Scroll to top",
337− )
338− }
339− }
340− }
341−}
342−
343−private fun copyToClipboard(context: Context, text: String) {
344− val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
345− clipboard.setPrimaryClip(ClipData.newPlainText("session", text))
346−}
347−
348−private val dateSeparatorFormat = java.time.format.DateTimeFormatter.ofPattern("MMM d")
349−
350−/** Convert an epoch-millis timestamp to the local calendar day it falls on. */
351−private fun localDayOf(epochMillis: Long): java.time.LocalDate =
352− java.time.Instant.ofEpochMilli(epochMillis)
353− .atZone(java.time.ZoneId.systemDefault())
354− .toLocalDate()
355−
356−/**
357− * A separator is shown above a message when it starts a new calendar day — i.e. the
358− * first timestamped message, or one whose day differs from the previous message's.
359− * Messages without a valid time (time <= 0) never get one.
360− */
361−private fun shouldShowDateSeparator(previous: soy.iko.opencode.core.MessageView?, current: soy.iko.opencode.core.MessageView): Boolean {
362− if (current.time <= 0) return false
363− if (previous == null || previous.time <= 0) return true
364− return localDayOf(previous.time) != localDayOf(current.time)
365−}
366−
367−/** Human-friendly day label: "Today", "Yesterday", or "MMM d" (e.g. "Jul 8"). */
368−private fun dateSeparatorLabel(day: java.time.LocalDate): String {
369− val today = java.time.LocalDate.now()
370− return when (day) {
371− today -> "Today"
372− today.minusDays(1) -> "Yesterday"
373− else -> day.format(dateSeparatorFormat)
374− }
375−}
376−
377−@Composable
378−private fun DateSeparator(epochMillis: Long) {
379− Text(
380− text = dateSeparatorLabel(localDayOf(epochMillis)),
381− style = MaterialTheme.typography.labelSmall,
382− color = MaterialTheme.colorScheme.onSurfaceVariant,
383− textAlign = TextAlign.Center,
384− modifier = Modifier.fillMaxWidth().padding(vertical = 8.dp),
385− )
386−}
387−
388−// Assistant-style bubble with three sequentially-pulsing dots, shown as a stand-in
389−// until the real streaming reply starts. Mirrors MessageBubble's left-aligned,
390−// surfaceVariant look so it reads as an incoming message.
391−@Composable
392−private fun TypingIndicator() {
393− val shape = RoundedCornerShape(topStart = 16.dp, topEnd = 16.dp, bottomStart = 4.dp, bottomEnd = 16.dp)
394− val transition = rememberInfiniteTransition(label = "typing")
395− Row(
396− modifier = Modifier.fillMaxWidth().padding(horizontal = 12.dp, vertical = 4.dp),
397− horizontalArrangement = Arrangement.Start,
398− ) {
399− Row(
400− modifier = Modifier
401− .clip(shape)
402− .background(MaterialTheme.colorScheme.surfaceVariant)
403− .padding(horizontal = 14.dp, vertical = 12.dp),
404− verticalAlignment = Alignment.CenterVertically,
405− horizontalArrangement = Arrangement.spacedBy(6.dp),
406− ) {
407− Text(
408− text = "Thinking",
409− style = MaterialTheme.typography.bodyMedium.copy(fontStyle = FontStyle.Italic),
410− color = MaterialTheme.colorScheme.onSurfaceVariant,
411− )
412− Row(horizontalArrangement = Arrangement.spacedBy(4.dp)) {
413− // Stagger the three dots so they fade in and out in sequence.
414− listOf(0, 150, 300).forEach { staggerMs ->
415− val alpha by transition.animateFloat(
416− initialValue = 0.2f,
417− targetValue = 1f,
418− animationSpec = infiniteRepeatable(
419− animation = tween(durationMillis = 600, delayMillis = staggerMs),
420− repeatMode = RepeatMode.Reverse,
421− ),
422− label = "dot",
423− )
424− Box(
425− modifier = Modifier
426− .size(6.dp)
427− .clip(CircleShape)
428− .background(MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = alpha)),
429− )
430− }
431− }
432− }
433− }
434−}
435−
436220@Composable
437221private fun ReconnectingBanner() {
438222 Surface(
@@ -458,109 +242,35 @@ private fun ReconnectingBanner() {
458242 }
459243}
460244
461−@Composable
462−private fun ErrorBanner(message: String, onDismiss: () -> Unit) {
463− Surface(
464− modifier = Modifier.fillMaxWidth(),
465− color = MaterialTheme.colorScheme.errorContainer,
466− ) {
467− Row(
468− modifier = Modifier.fillMaxWidth().padding(start = 16.dp, top = 6.dp, bottom = 6.dp, end = 4.dp),
469− verticalAlignment = Alignment.CenterVertically,
470− horizontalArrangement = Arrangement.spacedBy(8.dp),
471− ) {
472− Text(
473− text = message,
474− style = MaterialTheme.typography.bodySmall,
475− color = MaterialTheme.colorScheme.onErrorContainer,
476− modifier = Modifier.weight(1f),
477− )
478− IconButton(onClick = onDismiss, modifier = Modifier.size(32.dp)) {
479− Icon(
480− Icons.Filled.Close,
481− contentDescription = "Dismiss error",
482− tint = MaterialTheme.colorScheme.onErrorContainer,
483− modifier = Modifier.size(18.dp),
484− )
485− }
486− }
487− }
488−}
489−
490245@Composable
491246private fun ChatInputBar(
492247 draft: String,
493248 generating: Boolean,
494− loading: Boolean,
495249 onDraftChange: (String) -> Unit,
496250 onSend: () -> Unit,
497251 onStop: () -> Unit,
498252) {
499253 val haptic = LocalHapticFeedback.current
500− val clipboardManager = LocalClipboardManager.current
501254 Surface(tonalElevation = 3.dp) {
502− Column(
503− modifier = Modifier.fillMaxWidth().imePadding().padding(horizontal = 12.dp, vertical = 8.dp),
504− ) {
505255 Row(
506− modifier = Modifier.fillMaxWidth(),
256+ modifier = Modifier.fillMaxWidth().imePadding().padding(horizontal = 12.dp, vertical = 8.dp),
507257 verticalAlignment = Alignment.Bottom,
508258 horizontalArrangement = Arrangement.spacedBy(8.dp),
509259 ) {
510260 OutlinedTextField(
511261 value = draft,
512262 onValueChange = onDraftChange,
513− modifier = Modifier.weight(1f).heightIn(min = 48.dp),
514− enabled = !loading,
263+ modifier = Modifier.weight(1f),
515264 placeholder = { Text("Message opencode…") },
516265 maxLines = 5,
517− // Offer a quick way to wipe the draft once there's something to clear
518− // and we're not mid-generation (where the field is a poor place to fuss).
519− trailingIcon = if (draft.isNotEmpty() && !generating) {
520− {
521− IconButton(
522− onClick = { onDraftChange("") },
523− modifier = Modifier.size(20.dp),
524− ) {
525− Icon(
526− Icons.Filled.Close,
527− contentDescription = "Clear draft",
528− modifier = Modifier.size(16.dp),
529− )
530− }
531− }
532− } else {
533− null
534− },
535− // Surface a running count once the draft gets long, so the user has a
536− // sense of scale before sending a wall of text.
537− supportingText = if (draft.length > 500) {
538− {
539− Text(
540− text = "${draft.length} characters",
541− style = MaterialTheme.typography.labelSmall,
542− color = MaterialTheme.colorScheme.onSurfaceVariant,
543− textAlign = TextAlign.End,
544− modifier = Modifier.fillMaxWidth(),
545− )
546− }
547− } else {
548− null
549− },
550266 keyboardOptions = KeyboardOptions(imeAction = ImeAction.Send),
551267 keyboardActions = KeyboardActions(onSend = {
552− if (!generating && !loading && draft.isNotBlank()) onSend()
268+ if (!generating && draft.isNotBlank()) onSend()
553269 }),
554270 )
555271 if (generating) {
556− FilledTonalButton(onClick = onStop) {
557− Icon(
558− Icons.Filled.Stop,
559− contentDescription = null,
560− modifier = Modifier.size(18.dp),
561− )
562− Spacer(Modifier.size(6.dp))
563− Text("Stop")
272+ FilledIconButton(onClick = onStop) {
273+ Icon(Icons.Filled.Stop, contentDescription = "Stop generating")
564274 }
565275 } else {
566276 FilledIconButton(
@@ -568,23 +278,11 @@ private fun ChatInputBar(
568278 haptic.performHapticFeedback(HapticFeedbackType.LongPress)
569279 onSend()
570280 },
571− enabled = draft.isNotBlank() && !loading,
281+ enabled = draft.isNotBlank(),
572282 ) {
573283 Icon(Icons.AutoMirrored.Filled.Send, contentDescription = "Send")
574284 }
575285 }
576286 }
577− // With nothing typed yet, offer a one-tap way to drop in clipboard contents.
578− if (draft.isEmpty() && !generating && !loading) {
579− TextButton(
580− onClick = {
581− clipboardManager.getText()?.text?.let { onDraftChange(it) }
582− },
583− contentPadding = PaddingValues(0.dp),
584− ) {
585− Text("Paste")
586− }
587− }
588− }
589287 }
590288}