ui: schedule striped copyable rows

app/src/main/java/agzam/vyatsu/ui/schedule/ScheduleScreen.kt

@@ -4,24 +4,31 @@ import agzam.vyatsu.domain.model.Day
 import agzam.vyatsu.domain.model.LessonType
 import agzam.vyatsu.domain.model.SchedulePeriod
 import agzam.vyatsu.domain.model.TimeSlot
+import android.widget.Toast
+import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.only
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBars
 import androidx.compose.foundation.layout.systemBars
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.layout.widthIn
+import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.LazyRow
 import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.selection.SelectionContainer
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowDropDown
 import androidx.compose.material.icons.filled.Refresh
@@ -47,14 +54,19 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
 import java.time.DayOfWeek
 import java.time.LocalDate
 import java.time.format.DateTimeFormatter
 
+
+val hPadding = 16.dp
+
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
+
     val state by viewModel.uiState.collectAsState()
 
     Column(Modifier.fillMaxSize()) {
@@ -70,7 +82,7 @@ fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
             },
             windowInsets = WindowInsets(0.dp)
         )
-        Column(Modifier.fillMaxSize().padding(horizontal = 16.dp, vertical = 0.dp)) {
+        Column(Modifier.fillMaxSize().padding(horizontal = 0.dp, vertical = 0.dp)) {
             when {
                 state.isSyncing && state.schedule == null -> {
                     Row(
@@ -111,7 +123,7 @@ fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
                         val dayLabel = if (isTodayDay) "Сегодня " else ""
 
                         Row(
-                            Modifier.fillMaxWidth(),
+                            Modifier.fillMaxWidth().padding(horizontal = hPadding),
                             verticalAlignment = Alignment.CenterVertically
                         ) {
                             Text(
@@ -126,7 +138,7 @@ fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
                                 onSelect = viewModel::selectWeek
                             )
                         }
-                        HorizontalDivider(Modifier.padding(top = 8.dp, bottom = 0.dp))
+                        HorizontalDivider(Modifier.padding(top = 8.dp, bottom = 0.dp, start = hPadding, end = hPadding))
 
                         DayChips(
                             days = weekDays,
@@ -135,14 +147,15 @@ fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
                             onSelect = viewModel::selectDay
                         )
 
-                        HorizontalDivider(Modifier.padding(top=0.dp, bottom = 8.dp))
+                        HorizontalDivider(Modifier.padding(top=0.dp, start = hPadding, end = hPadding))
 
                         if (day.intervals.all { it.lessons.isEmpty() }) {
                             Text("Занятий нет", style = MaterialTheme.typography.bodyLarge)
                         } else {
                             LazyColumn(
                                 modifier = Modifier.weight(1f),
-                                verticalArrangement = Arrangement.spacedBy(8.dp)
+                                verticalArrangement = Arrangement.spacedBy(8.dp),
+                                contentPadding = PaddingValues(vertical = 8.dp)
                             ) {
                                 itemsIndexed(day.intervals) { slotIndex, slot ->
                                     LessonSlot(slotIndex = slotIndex, slot = slot)
@@ -228,7 +241,7 @@ private fun DayChips(
     todayDate: LocalDate?,
     onSelect: (LocalDate) -> Unit
 ) {
-    LazyRow(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+    LazyRow(horizontalArrangement = Arrangement.spacedBy(6.dp), contentPadding = PaddingValues(horizontal = hPadding, vertical = 2.dp),) {
         items(days, key = { it.date.toEpochDay() }) { day ->
             val selected = selectedDate == day.date
             val isTodayChip = todayDate == day.date
@@ -276,10 +289,12 @@ private fun weekLabel(period: SchedulePeriod): String {
 
 @Composable
 private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
+    val context = LocalContext.current
+    var indexColor = 0
     Column(Modifier.fillMaxWidth()) {
         Row(modifier = Modifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically) {
             HorizontalDivider(
-                modifier = Modifier.width(10.dp),
+                modifier = Modifier.width(10.dp + hPadding).padding(start = hPadding),
                 color = MaterialTheme.colorScheme.primary
             )
             Text(
@@ -288,17 +303,47 @@ private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
                 color = MaterialTheme.colorScheme.primary,
                 modifier = Modifier.padding(horizontal = 4.dp)
             )
-            HorizontalDivider(color = MaterialTheme.colorScheme.primary, modifier = Modifier.weight(1f))
+            HorizontalDivider(color = MaterialTheme.colorScheme.primary, modifier = Modifier.weight(1f).padding(end = hPadding))
         }
         if (slot.lessons.isEmpty()) {
             Text("—", style = MaterialTheme.typography.bodyMedium)
         } else {
-            slot.lessons.forEach { lesson ->
+            slot.lessons.forEachIndexed { index, lesson ->
-                Column(Modifier.fillMaxWidth().padding(vertical = 2.dp)) {
+                val backgroundColor = if (indexColor % 2 == 0) {
+                    MaterialTheme.colorScheme.surfaceBright
+                } else {
+                    MaterialTheme.colorScheme.surfaceVariant
+                }
+                indexColor++
+                // XXX:
+                // Убрать SelectionContainer?
+                // Режим редактирования расписания?
+                // Меню на onClick?
+                // Меню на onLongClick?
+                SelectionContainer() {
+                    Column(
+                        Modifier.fillMaxWidth().padding(vertical = 2.dp).background(backgroundColor)
+                        // XXX: combinedClickable?
+                        //.combinedClickable(
+                        //    onClick = {
+                        //        Toast.makeText(
+                        //            context,
+                        //            lesson.raw,
+                        //            Toast.LENGTH_SHORT
+                        //        ).show()
+                        //    },
+                        //    onLongClick = {},
+                        //    // TODO: onLongClickLabel = "(Accessibility)"
+                        //),
+                    ) {
                         var any = false
 
                         val meta = listOfNotNull(
-                        if(lesson.type == LessonType.OTHER) { null } else { lesson.type.label},
+                            if (lesson.type == LessonType.OTHER) {
+                                null
+                            } else {
+                                lesson.type.label
+                            },
                             lesson.subgroup,
                             lesson.teacher,
                             lesson.room
@@ -308,7 +353,8 @@ private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
                             Text(
                                 meta,
                                 style = MaterialTheme.typography.bodySmall,
-                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                                modifier = Modifier.padding(horizontal = hPadding)
                             )
                             any = true
                         }
@@ -317,16 +363,18 @@ private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
                         if (subject.isNotEmpty()) {
                             Text(
                                 subject,
-                            style = MaterialTheme.typography.bodyLarge
+                                style = MaterialTheme.typography.bodyLarge,
+                                modifier = Modifier.padding(horizontal = hPadding)
                             )
                             any = true
                         }
 
                         if (!any) {
                             Text(
-                            "-",
+                                "пусто",
                                 style = MaterialTheme.typography.bodySmall,
-                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                                modifier = Modifier.padding(horizontal = hPadding)
                             )
                         }
 
@@ -335,6 +383,7 @@ private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
             }
         }
     }
+}
 
 private fun dayName(dayOfWeek: DayOfWeek): String = when (dayOfWeek) {
     DayOfWeek.MONDAY -> "Пн"