amethyst/app/src/main/java/com/vitorpamplona/amethyst/ui/screen/ThreadFeedView.kt

339 wiersze
14 KiB
Kotlin

package com.vitorpamplona.amethyst.ui.screen
import androidx.compose.animation.Crossfade
import androidx.compose.animation.core.tween
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.itemsIndexed
import androidx.compose.foundation.lazy.rememberLazyListState
import androidx.compose.material.Divider
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.MoreVert
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.livedata.observeAsState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.drawBehind
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.compositeOver
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.unit.dp
import androidx.navigation.NavController
import com.google.accompanist.swiperefresh.SwipeRefresh
import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
import com.vitorpamplona.amethyst.model.Note
import com.vitorpamplona.amethyst.ui.components.ObserveDisplayNip05Status
import com.vitorpamplona.amethyst.ui.components.TranslateableRichTextViewer
import com.vitorpamplona.amethyst.ui.note.BlankNote
import com.vitorpamplona.amethyst.ui.note.HiddenNote
import com.vitorpamplona.amethyst.ui.note.NoteAuthorPicture
import com.vitorpamplona.amethyst.ui.note.NoteCompose
import com.vitorpamplona.amethyst.ui.note.NoteDropDownMenu
import com.vitorpamplona.amethyst.ui.note.NoteUsernameDisplay
import com.vitorpamplona.amethyst.ui.note.ReactionsRow
import com.vitorpamplona.amethyst.ui.note.timeAgo
import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
import kotlinx.coroutines.delay
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.sp
import coil.compose.AsyncImage
import com.vitorpamplona.amethyst.R
import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
@Composable
fun ThreadFeedView(noteId: String, viewModel: FeedViewModel, accountViewModel: AccountViewModel, navController: NavController) {
val feedState by viewModel.feedContent.collectAsState()
var isRefreshing by remember { mutableStateOf(false) }
val swipeRefreshState = rememberSwipeRefreshState(isRefreshing)
val listState = rememberLazyListState()
LaunchedEffect(isRefreshing) {
if (isRefreshing) {
viewModel.refresh()
isRefreshing = false
}
}
SwipeRefresh(
state = swipeRefreshState,
onRefresh = {
isRefreshing = true
},
) {
Column() {
Crossfade(targetState = feedState, animationSpec = tween(durationMillis = 100)) { state ->
when (state) {
is FeedState.Empty -> {
FeedEmpty {
isRefreshing = true
}
}
is FeedState.FeedError -> {
FeedError(state.errorMessage) {
isRefreshing = true
}
}
is FeedState.Loaded -> {
LaunchedEffect(noteId) {
// waits to load the thread to scroll to item.
delay(100)
val noteForPosition = state.feed.value.filter { it.idHex == noteId}.firstOrNull()
var position = state.feed.value.indexOf(noteForPosition)
if (position >= 0) {
if (position >= 1 && position < state.feed.value.size - 1) {
position -- // show the replying note
}
listState.animateScrollToItem(position)
}
}
LazyColumn(
contentPadding = PaddingValues(
top = 10.dp,
bottom = 10.dp
),
state = listState
) {
itemsIndexed(state.feed.value, key = { _, item -> item.idHex }) { index, item ->
if (index == 0)
NoteMaster(item,
modifier = Modifier.drawReplyLevel(
item.replyLevel(),
MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
if (item.idHex == noteId) MaterialTheme.colors.primary.copy(alpha = 0.52f) else MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
),
accountViewModel = accountViewModel,
navController = navController
)
else {
Column() {
Row() {
NoteCompose(
item,
modifier = Modifier.drawReplyLevel(
item.replyLevel(),
MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
if (item.idHex == noteId) MaterialTheme.colors.primary.copy(alpha = 0.52f) else MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
),
parentBackgroundColor = if (item.idHex == noteId) MaterialTheme.colors.primary.copy(0.12f).compositeOver(MaterialTheme.colors.background) else null,
isBoostedNote = false,
unPackReply = false,
accountViewModel = accountViewModel,
navController = navController,
)
}
}
}
}
}
}
FeedState.Loading -> {
LoadingFeed()
}
}
}
}
}
}
// Creates a Zebra pattern where each bar is a reply level.
fun Modifier.drawReplyLevel(level: Int, color: Color, selected: Color): Modifier = this
.drawBehind {
val paddingDp = 2
val strokeWidthDp = 2
val levelWidthDp = strokeWidthDp + 1
val padding = paddingDp.dp.toPx()
val strokeWidth = strokeWidthDp.dp.toPx()
val levelWidth = levelWidthDp.dp.toPx()
repeat(level) {
this.drawLine(
if (it == level-1) selected else color,
Offset(padding + it * levelWidth, 0f),
Offset(padding + it * levelWidth, size.height),
strokeWidth = strokeWidth
)
}
return@drawBehind
}
.padding(start = (2 + (level * 3)).dp)
@Composable
fun NoteMaster(baseNote: Note,
modifier: Modifier = Modifier,
accountViewModel: AccountViewModel,
navController: NavController
) {
val noteState by baseNote.live().metadata.observeAsState()
val note = noteState?.note
val noteReportsState by baseNote.live().reports.observeAsState()
val noteForReports = noteReportsState?.note ?: return
val accountState by accountViewModel.accountLiveData.observeAsState()
val account = accountState?.account ?: return
var showHiddenNote by remember { mutableStateOf(false) }
val context = LocalContext.current
var moreActionsExpanded by remember { mutableStateOf(false) }
val noteEvent = note?.event
if (noteEvent == null) {
BlankNote()
} else if (!account.isAcceptable(noteForReports) && !showHiddenNote) {
HiddenNote(
account.getRelevantReports(noteForReports),
account.userProfile(),
Modifier,
false,
navController,
onClick = { showHiddenNote = true }
)
} else {
Column(
modifier
.fillMaxWidth()
.padding(top = 10.dp)) {
Row(modifier = Modifier
.padding(start = 12.dp, end = 12.dp)
.clickable(onClick = {
note.author?.let {
navController.navigate("User/${it.pubkeyHex}")
}
})
) {
NoteAuthorPicture(
note = baseNote,
navController = navController,
userAccount = account.userProfile(),
size = 55.dp
)
Column(modifier = Modifier.padding(start = 10.dp)) {
Row(verticalAlignment = Alignment.CenterVertically) {
NoteUsernameDisplay(baseNote, Modifier.weight(1f))
Text(
timeAgo(note.createdAt(), context = context),
color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
maxLines = 1
)
IconButton(
modifier = Modifier.then(Modifier.size(24.dp)),
onClick = { moreActionsExpanded = true }
) {
Icon(
imageVector = Icons.Default.MoreVert,
null,
modifier = Modifier.size(15.dp),
tint = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
)
NoteDropDownMenu(baseNote, moreActionsExpanded, { moreActionsExpanded = false }, accountViewModel)
}
}
ObserveDisplayNip05Status(baseNote)
}
}
if (noteEvent is LongTextNoteEvent) {
Row(modifier = Modifier.padding(start = 12.dp, end = 12.dp, top = 10.dp)) {
Column {
noteEvent.image()?.let {
AsyncImage(
model = it,
contentDescription = stringResource(
R.string.preview_card_image_for,
it
),
contentScale = ContentScale.FillWidth,
modifier = Modifier.fillMaxWidth()
)
}
noteEvent.title()?.let {
Text(
text = it,
fontSize = 30.sp,
fontWeight = FontWeight.Bold,
modifier = Modifier
.fillMaxWidth()
.padding(top = 10.dp)
)
}
noteEvent.summary()?.let {
Text(
text = it,
modifier = Modifier
.fillMaxWidth()
.padding(top = 10.dp)
)
}
}
}
}
Row(modifier = Modifier.padding(horizontal = 12.dp)) {
Column() {
val eventContent = note.event?.content
val canPreview = note.author == account.userProfile()
|| (note.author?.let { account.userProfile().isFollowing(it) } ?: true )
|| !noteForReports.hasAnyReports()
if (eventContent != null) {
TranslateableRichTextViewer(
eventContent,
canPreview,
Modifier.fillMaxWidth(),
note.event?.tags,
MaterialTheme.colors.background,
accountViewModel,
navController
)
}
ReactionsRow(note, accountViewModel)
Divider(
modifier = Modifier.padding(top = 10.dp),
thickness = 0.25.dp
)
}
}
}
}
}