ui: no more empty lines in schedule

.gitea/workflows/release.yml

@@ -85,6 +85,9 @@ jobs:
       - name: Build release APK
         run: ./gradlew assembleRelease
         env:
+          # Версия приложения — дата, сгенерированная на предыдущем шаге.
+          # Читается в app/build.gradle.kts как versionName (для BuildConfig).
+          APP_VERSION: ${{ steps.version.outputs.version_name }}
           # Переменные окружения, которые читает signingConfig в app/build.gradle.kts
           ANDROID_KEYSTORE_PATH: ${{ github.workspace }}/keystore.jks
           ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}

app/build.gradle.kts

@@ -17,7 +17,9 @@ android {
         minSdk = 28
         targetSdk = 36
         versionCode = 1
-        versionName = "1.0"
+        // В продакшн-сборке версию приложения подставляет CI (env APP_VERSION = дата ГГГГ.ММ.ДД).
+        // Локально и при отсутствии переменной — fallback "1.0".
+        versionName = System.getenv("APP_VERSION") ?: "1.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/java/agzam/vyatsu/data/local/PreferencesDao.kt

@@ -15,4 +15,16 @@ interface PreferencesDao {
 
     @Query("DELETE FROM preferences WHERE key = 'selectedGroupId'")
     suspend fun clearSelectedGroup()
+
+    @Query("SELECT value FROM preferences WHERE key = 'selectedWeekStart'")
+    suspend fun selectedWeekStart(): String?
+
+    @Query("INSERT OR REPLACE INTO preferences(key, value) VALUES('selectedWeekStart', :weekStart)")
+    suspend fun setSelectedWeekStart(weekStart: String)
+
+    @Query("SELECT value FROM preferences WHERE key = 'selectedDayDate'")
+    suspend fun selectedDayDate(): String?
+
+    @Query("INSERT OR REPLACE INTO preferences(key, value) VALUES('selectedDayDate', :date)")
+    suspend fun setSelectedDayDate(date: String)
 }

app/src/main/java/agzam/vyatsu/data/local/ScheduleDao.kt

@@ -42,7 +42,7 @@ interface ScheduleDao {
     suspend fun trim(groupId: String, keep: Int)
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
-    suspend fun insertDays(days: List<DayEntity>)
+    suspend fun insertDays(days: List<DayEntity>): List<Long>
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun insertLessons(lessons: List<LessonEntity>)

app/src/main/java/agzam/vyatsu/data/remote/pdf/Pdf2Table.kt

@@ -38,7 +38,7 @@ class Pdf2Table(page: PDPage) : PDFGraphicsStreamEngine(page) {
 
     private val svgBuilder = StringBuilder()
     private val currentPath = StringBuilder()
-    private val tableSvg = StringBuilder()
+    val tableSvg = StringBuilder()
 
 
     private val currentSubPathLines = mutableListOf<PdfLine>()
@@ -52,7 +52,7 @@ class Pdf2Table(page: PDPage) : PDFGraphicsStreamEngine(page) {
         val width = mediaBox.width
         val height = mediaBox.height
         return """
-            <svg width="$width" height="$height" viewBox="0 0 $width $height" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+            <svg width="$width" height="$height" viewBox="0 0 $width $height" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style='font-size: 50%;'>
                 <g>${svgBuilder}</g>
                 <g>${tableSvg}</g>
             </svg>
@@ -211,7 +211,7 @@ class Pdf2Table(page: PDPage) : PDFGraphicsStreamEngine(page) {
                 val bottom = ys[ii+1]
                 cells.add(TableCell(left, top, right-left, bottom-top))
 
-                tableSvg.append("<rect fill='${if (i % 2 == 0) "#f" else "#0"}${if (ii % 2 == 0) "f0" else "00"}' x='$left' y='$top' width='${right-left}' height='${bottom-top}'/>\n")
+                tableSvg.append("<rect fill='${if (i % 2 == 0) "#ff" else "#9e"}${if (ii % 2 == 0) "ff9e" else "9e9e"}' x='$left' y='$top' width='${right-left}' height='${bottom-top}'/>\n")
             }
             columns.add(TableColumn(left, right-left, cells))
         }

app/src/main/java/agzam/vyatsu/data/remote/pdf/PdfScheduleParser.kt

@@ -2,6 +2,7 @@ package agzam.vyatsu.data.remote.pdf
 
 import agzam.vyatsu.domain.model.Day
 import agzam.vyatsu.domain.model.Lesson
+import agzam.vyatsu.domain.model.LessonType
 import agzam.vyatsu.domain.model.TimeSlot
 import android.util.Log
 import com.tom_roush.pdfbox.pdmodel.PDDocument
@@ -25,6 +26,10 @@ object PdfScheduleParser {
     private fun timeFrom(timeString: String?): LocalTime? { return runCatching { LocalTime.parse(timeString, TIME_FORMAT) }.getOrNull() }
     private fun dateFrom(dateString: String?): LocalDate? { return runCatching { LocalDate.parse(dateString, DATE_FORMAT) }.getOrNull() }
 
+    private val ROOM_REGEX = Regex("""(?<=^|\s)\d{1,2}-\d{3}[_a-zA-Zа-яА-Я]?(?=\s|$)""")
+    private val LESSON_TYPE_REGEX = Regex(LessonType.entries.joinToString(separator = "|") { Regex.escape(it.label) }.let { """(?<=^|\s)($it)(?=\s|$)""" } )
+    private val SUBGROUP_REGEX = Regex("""\d{2}\sподгруппа""", RegexOption.IGNORE_CASE)
+
     fun parse(pdfBytes: ByteArray): List<Day> {
         Log.d(TAG, "Parsing ${pdfBytes.size} bytes")
         val doc = try {
@@ -35,6 +40,8 @@ object PdfScheduleParser {
         }
 
         val days = mutableListOf<Day>()
+        var group: String? = null
+
         try {
             for (pageIndex in 0 until doc.numberOfPages) {
                 Log.v(TAG, "============ Page $pageIndex ============")
@@ -45,12 +52,6 @@ object PdfScheduleParser {
                 svg.processPage(page)
                 val cols = svg.asTable()
 
-                /** Вывод таблички из PDF в SVG формате + отладочные жлементы из [Pdf2Table.asTable] **/
-                Log.v(SVG_TAG,  "====")
-                for(line in  svg.asSvg().split("\n")) {
-                    Log.v(SVG_TAG,  line)
-                }
-
                 if(cols.size != 3) throw RuntimeException("Found columns: ${cols.size}/3")
 
                 // Парсинг текста
@@ -60,6 +61,11 @@ object PdfScheduleParser {
                 textStripper.getText(doc)
                 val texts = textStripper.blocks
 
+                for(text in texts) {
+                    svg.tableSvg.appendLine("<text x='${text.x}' y='${text.y}'>${text.text}</text>")
+                    svg.tableSvg.appendLine("<circle cx='${text.x}' cy='${text.y}' r='1' fill='red'/>")
+                }
+
                 val daysColumn      = cols[0] // Колонка "День", имеет формат "<день> dd.mm.yy"
                 val intervalsColumn = cols[1] // Колонка "Интервал", имеет формат "HH:mm-HH:mm"
                 val lessonsColumn   = cols[2] // Колонка с инофрмацией о паре
@@ -100,10 +106,17 @@ object PdfScheduleParser {
                     }
                 }
 
-
                 for (dayCell in daysColumn.cells) {
                     val day = content(dayCell).split(' ')
-                    if(day.size != 2) continue // XXX: добавить защиту от заголовка и выбрасывать исключения вместо пропуска?
+                    if(day.size == 1 && day.first() == "День") {
+                        val groupCell = select(lessonsColumn, dayCell).firstOrNull() ?: continue
+                        group = content(groupCell)
+                        continue
+                    }
+                    if(day.size != 2) {
+                        Log.w(TAG, "Day data is not in format <day> <date>: $day")
+                        continue // XXX: добавить защиту от заголовка и выбрасывать исключения вместо пропуска?
+                    }
 
                     val date = dateFrom(day[1]) ?: continue
                     val intervals = mutableListOf<TimeSlot>()
@@ -124,7 +137,55 @@ object PdfScheduleParser {
                             val content = content(lessonCell)
                             Log.v(TAG, "- $content")
                             // TODO: парсинг контента лекции
-                            lessons.add(Lesson(raw=content))
+
+                            // Поиск кабинета в строке, ибо он последний, если их несколько - то скорее всего разделение на подгруппы
+                            var found = 0
+                            var currentStart = 0
+                            for (roomMatch in ROOM_REGEX.findAll(content)) {
+                                found++
+
+                                val raw = content.substring(currentStart, roomMatch.range.last + 1)
+                                currentStart = roomMatch.range.last + 1
+
+                                // Предполагаемый формат: [группа], [XX подгруппа] <предмет> <тип> [id + тип] <ФИО> <кабинет>
+
+                                val room = roomMatch.value
+
+                                val typeMatch = LESSON_TYPE_REGEX.findAll(raw).toList()
+                                if(typeMatch.isEmpty()) {
+                                    lessons.add(Lesson(
+                                        raw=raw,
+                                        room=room,
+                                    ))
+                                    continue
+                                }
+                                var subject = raw.substring(0, typeMatch.first().range.first).trim() // TODO: сейчас [группа], [XX подгруппа] <предмет> - можно достать подгруппу
+                                val type = LessonType.fromRaw(typeMatch.first().value.trim())
+                                val teacher = raw.substring(typeMatch.last().range.last+1, raw.length - room.length).trim()
+                                var subgroup: String? = null
+                                Log.d(TAG, "$subject $group")
+                                if(group != null && subject.startsWith("$group,")) {
+                                    subject = subject.substring(group.length + 1).trim()
+                                    val subgroupMatch = SUBGROUP_REGEX.find(subject)
+                                    if(subgroupMatch != null) {
+                                        subgroup = subgroupMatch.value.trim()
+                                        subject = subject.removeRange(subgroupMatch.range).trim()
+                                    }
+                                }
+
+
+                                lessons.add(Lesson(
+                                    raw=raw,
+                                    subject=subject,
+                                    room=room,
+                                    type=type,
+                                    teacher=teacher,
+                                    subgroup=subgroup
+                                ))
+                            }
+
+                            if(found == 0) lessons.add(Lesson(raw=content))
+
                         }
                         intervals.add(TimeSlot(start = start, end = end, lessons = lessons))
                     }
@@ -133,6 +194,18 @@ object PdfScheduleParser {
                 for (text in texts.filter { it.rotation != 0f }) {
                     Log.v(TAG, "${text.x.roundToInt()}\t${text.y.roundToInt()}\t${text.text}")
                 }
+
+                /** Вывод таблички из PDF в SVG формате + отладочные жлементы из [Pdf2Table.asTable] **/
+                Log.v(SVG_TAG,  "====")
+                for(line in  svg.asSvg().split("\n")) {
+                    if(line.length > 250) {
+                        Log.v(SVG_TAG, "length: " + line.length)
+                        Log.v(SVG_TAG + "-" + (pageIndex+1),  "length: " + line.length)
+                        continue
+                    }
+                    Log.v(SVG_TAG,  line)
+                    Log.v(SVG_TAG + "-" + (pageIndex+1),  line)
+                }
             }
         } catch (e: Exception) {
             Log.e(TAG, "Parsing error", e)

app/src/main/java/agzam/vyatsu/data/remote/pdf/PdfTextParser.kt

@@ -7,6 +7,7 @@ import com.tom_roush.pdfbox.text.TextPosition
  * Парсер блоков текста из PDF
  * @author Agzam
  */
+
 class PdfTextParser : PDFTextStripper() {
 
     data class TextBlock(
@@ -25,21 +26,51 @@ class PdfTextParser : PDFTextStripper() {
     }
 
     override fun writeString(string: String?, textPositions: MutableList<TextPosition>?) {
-        if (!string.isNullOrBlank() && !textPositions.isNullOrEmpty()) {
-            val first = textPositions.first()
-            val last = textPositions.last()
+        if (textPositions.isNullOrEmpty()) return
 
-            val matrix = first.textMatrix
-            val rotation = first.dir
+        val currentWordChars = mutableListOf<TextPosition>()
 
-            val totalWidth = (last.xDirAdj + last.widthDirAdj) - first.xDirAdj
+        for (tp in textPositions) {
+            val unicode = tp.unicode
 
-            val x = matrix.translateX
-            val y = matrix.translateY - first.heightDir
-
-            val height = first.heightDir
-
-            blocks.add(TextBlock(string.trim(), x, currentPage.mediaBox.height - y - height, totalWidth, height, rotation))
+            if (unicode == " " || unicode == "\u00A0" || unicode == "\t") {
+                addWordBlock(currentWordChars)
+                currentWordChars.clear()
+            } else {
+                currentWordChars.add(tp)
+            }
         }
+
+        addWordBlock(currentWordChars)
+    }
+
+    private fun addWordBlock(wordChars: List<TextPosition>) {
+        if (wordChars.isEmpty()) return
+
+        val first = wordChars.first()
+        val last = wordChars.last()
+
+        val wordText = wordChars.joinToString("") { it.unicode }.trim()
+        if (wordText.isEmpty()) return
+
+        val matrix = first.textMatrix
+        val rotation = first.dir
+
+        val totalWidth = (last.xDirAdj + last.widthDirAdj) - first.xDirAdj
+
+        val x = matrix.translateX
+        val y = matrix.translateY - first.heightDir
+        val height = first.heightDir
+
+        blocks.add(
+            TextBlock(
+                text = wordText,
+                x = x,
+                y = currentPage.mediaBox.height - y - height,
+                width = totalWidth,
+                height = height,
+                rotation = rotation
+            )
+        )
     }
 }

app/src/main/java/agzam/vyatsu/data/repository/GroupRepositoryImpl.kt

@@ -23,9 +23,6 @@ class GroupRepositoryImpl(
     override suspend fun getGroups(): List<Group> =
         groupDao.observeAll().first().map { it.toDomain() }
 
-    override suspend fun getGroup(id: String): Group? =
-        groupDao.getById(id)?.toDomain()
-
     override suspend fun getFaculties(): List<String> = groupDao.getFaculties()
 
     override suspend fun refreshIfStale(): Boolean {

app/src/main/java/agzam/vyatsu/data/repository/PreferencesRepositoryImpl.kt

@@ -9,4 +9,8 @@ class PreferencesRepositoryImpl(
     override suspend fun selectedGroupId(): String? = dao.selectedGroupId()
     override suspend fun setSelectedGroup(groupId: String) = dao.setSelectedGroup(groupId)
     override suspend fun clearSelectedGroup() = dao.clearSelectedGroup()
+    override suspend fun selectedWeekStart(): String? = dao.selectedWeekStart()
+    override suspend fun setSelectedWeekStart(weekStart: String) = dao.setSelectedWeekStart(weekStart)
+    override suspend fun selectedDayDate(): String? = dao.selectedDayDate()
+    override suspend fun setSelectedDayDate(date: String) = dao.setSelectedDayDate(date)
 }

app/src/main/java/agzam/vyatsu/data/repository/ScheduleRepositoryImpl.kt

@@ -112,11 +112,8 @@ class ScheduleRepositoryImpl(
     private suspend fun replaceDays(scheduleId: Long, days: List<Day>) {
         scheduleDao.deleteDaysForSchedule(scheduleId)
         val dayEntities = days.map { DayEntity(scheduleId = scheduleId, date = it.date.toEpochDay()) }
-        val dayIdByDate = mutableMapOf<LocalDate, Long>()
-        scheduleDao.insertDays(dayEntities)
-        for (day in dayEntities) {
-            dayIdByDate[LocalDate.ofEpochDay(day.date)] = day.id
-        }
+        val dayIds = scheduleDao.insertDays(dayEntities)
+        val dayIdByDate = dayEntities.zip(dayIds).associate { (day, id) -> LocalDate.ofEpochDay(day.date) to id }
         val lessons = days.flatMap { day ->
             day.intervals.flatMapIndexed { slotIndex, slot ->
                 slot.lessons.mapIndexed { lessonIndex, lesson ->
@@ -160,6 +157,7 @@ class ScheduleRepositoryImpl(
         val lessonsByDay = lessonEntities.groupBy { it.dayId }
         val days = dayEntities
             .sortedBy { it.date }
+            .distinctBy { it.date }
             .map { day ->
                 val lessons = lessonsByDay[day.id].orEmpty()
                     .groupBy { it.slotIndex }

app/src/main/java/agzam/vyatsu/domain/model/Schedule.kt

@@ -15,4 +15,7 @@ data class Schedule(
 ) {
     fun periodOf(date: LocalDate): SchedulePeriod? =
         periods.firstOrNull { !date.isBefore(it.weekStart) && !date.isAfter(it.weekEnd) }
+
+    fun daysOf(period: SchedulePeriod): List<Day> =
+        days.filter { !it.date.isBefore(period.weekStart) && !it.date.isAfter(period.weekEnd) }
 }

app/src/main/java/agzam/vyatsu/domain/repository/GroupRepository.kt

@@ -6,7 +6,6 @@ import kotlinx.coroutines.flow.Flow
 interface GroupRepository {
     fun observeGroups(): Flow<List<Group>>
     suspend fun getGroups(): List<Group>
-    suspend fun getGroup(id: String): Group?
     suspend fun getFaculties(): List<String>
     suspend fun refreshIfStale(): Boolean
     suspend fun forceRefresh(): Boolean

app/src/main/java/agzam/vyatsu/domain/repository/PreferencesRepository.kt

@@ -4,4 +4,8 @@ interface PreferencesRepository {
     suspend fun selectedGroupId(): String?
     suspend fun setSelectedGroup(groupId: String)
     suspend fun clearSelectedGroup()
+    suspend fun selectedWeekStart(): String?
+    suspend fun setSelectedWeekStart(weekStart: String)
+    suspend fun selectedDayDate(): String?
+    suspend fun setSelectedDayDate(date: String)
 }

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

@@ -1,8 +1,12 @@
 package agzam.vyatsu.ui.schedule
 
 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 androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.WindowInsets
@@ -11,13 +15,18 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.only
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.systemBars
+import androidx.compose.foundation.layout.widthIn
 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.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowDropDown
 import androidx.compose.material.icons.filled.Refresh
 import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.DropdownMenu
+import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.FilterChip
 import androidx.compose.material3.FilterChipDefaults
@@ -31,10 +40,15 @@ import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+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.clip
 import androidx.compose.ui.unit.dp
 import java.time.DayOfWeek
+import java.time.LocalDate
 import java.time.format.DateTimeFormatter
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -55,7 +69,7 @@ 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 = 16.dp, vertical = 0.dp)) {
             when {
                 state.isSyncing && state.schedule == null -> {
                     Row(
@@ -83,38 +97,44 @@ fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
 
                 else -> {
                     val schedule = state.schedule!!
-                    val day = schedule.days.getOrNull(state.selectedIndex)
+                    val weekDays = state.weekStart
+                        ?.let { ws -> schedule.periods.firstOrNull { it.weekStart == ws } }
+                        ?.let { schedule.daysOf(it) }
+                        .orEmpty()
+                    val day = schedule.days.firstOrNull { it.date == state.dayDate }
+
                     if (day == null) {
                         Text("Занятий нет", style = MaterialTheme.typography.bodyLarge)
                     } else {
-                        val isToday = state.selectedIndex == state.todayIndex
-                        val dayLabel = if (isToday) "Сегодня " else ""
+                        val isTodayDay = day.date == state.todayDate
+                        val dayLabel = if (isTodayDay) "Сегодня " else ""
 
-                        Text(
-                            "$dayLabel ${dayName(day.date.dayOfWeek)} · ${day.date.format(FULL_DATE)}",
-                            style = MaterialTheme.typography.titleMedium
-                        )
                         Row(
                             Modifier.fillMaxWidth(),
-                            horizontalArrangement = Arrangement.spacedBy(8.dp)
+                            verticalAlignment = Alignment.CenterVertically
                         ) {
-                            TextButton(onClick = { viewModel.clearSelectedPeriod() }) {
-                                Text("Очистить неделю")
-                            }
-                            TextButton(onClick = { viewModel.clearAll() }) {
-                                Text("Очистить всё")
-                            }
+                            Text(
+                                "$dayLabel${dayName(day.date.dayOfWeek)} · ${day.date.format(FULL_DATE)}",
+                                style = MaterialTheme.typography.titleMedium,
+                                modifier = Modifier.weight(1f)
+                            )
+                            WeekSelector(
+                                periods = schedule.periods,
+                                selectedWeekStart = state.weekStart,
+                                todayWeekStart = state.todayDate?.let { schedule.periodOf(it)?.weekStart },
+                                onSelect = viewModel::selectWeek
+                            )
                         }
-                        HorizontalDivider(Modifier.padding(vertical = 8.dp))
+                        HorizontalDivider(Modifier.padding(top = 8.dp, bottom = 0.dp))
 
                         DayChips(
-                            days = schedule.days,
-                            selectedIndex = state.selectedIndex,
-                            todayIndex = state.todayIndex,
+                            days = weekDays,
+                            selectedDate = state.dayDate,
+                            todayDate = state.todayDate,
                             onSelect = viewModel::selectDay
                         )
 
-                        HorizontalDivider(Modifier.padding(vertical = 8.dp))
+                        HorizontalDivider(Modifier.padding(top=0.dp, bottom = 8.dp))
 
                         if (day.intervals.all { it.lessons.isEmpty() }) {
                             Text("Занятий нет", style = MaterialTheme.typography.bodyLarge)
@@ -135,20 +155,85 @@ fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
     }
 }
 
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun WeekSelector(
+    periods: List<SchedulePeriod>,
+    selectedWeekStart: LocalDate?,
+    todayWeekStart: LocalDate?,
+    onSelect: (LocalDate) -> Unit
+) {
+    val selected = periods.firstOrNull { it.weekStart == selectedWeekStart }
+    var expanded by remember { mutableStateOf(false) }
+
+    Box {
+        Row(
+            modifier = Modifier
+                .clip(MaterialTheme.shapes.small)
+                .clickable(enabled = true, onClick = { expanded = true })
+                .padding(horizontal = 10.dp, vertical = 8.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Text(
+                selected?.let(::weekLabel) ?: "Период",
+                style = MaterialTheme.typography.labelLarge,
+                color = MaterialTheme.colorScheme.primary
+            )
+            Icon(
+                imageVector = Icons.Default.ArrowDropDown,
+                contentDescription = null,
+                tint = MaterialTheme.colorScheme.primary
+            )
+        }
+        DropdownMenu(
+            expanded = expanded,
+            onDismissRequest = { expanded = false },
+            modifier = Modifier.widthIn(min = 220.dp)
+        ) {
+            periods.forEach { period ->
+                val isTodayWeek = todayWeekStart == period.weekStart
+                DropdownMenuItem(
+                    text = {
+                        Text(
+                            weekLabel(period),
+                            style = MaterialTheme.typography.bodyLarge
+                        )
+                    },
+                    trailingIcon = if (isTodayWeek) {
+                        {
+                            Text(
+                                "сегодня",
+                                style = MaterialTheme.typography.labelMedium,
+                                color = MaterialTheme.colorScheme.primary
+                            )
+                        }
+                    } else {
+                        null
+                    },
+                    onClick = {
+                        expanded = false
+                        onSelect(period.weekStart)
+                    }
+                )
+            }
+        }
+    }
+}
+
 @Composable
 private fun DayChips(
     days: List<Day>,
-    selectedIndex: Int,
-    todayIndex: Int,
-    onSelect: (Int) -> Unit
+    selectedDate: LocalDate?,
+    todayDate: LocalDate?,
+    onSelect: (LocalDate) -> Unit
 ) {
     LazyRow(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
-        itemsIndexed(days) { index, day ->
-            val selected = selectedIndex == index
-            val isTodayChip = todayIndex == index
+        items(days, key = { it.date.toEpochDay() }) { day ->
+            val selected = selectedDate == day.date
+            val isTodayChip = todayDate == day.date
             FilterChip(
                 selected = selected,
-                onClick = { onSelect(index) },
+                onClick = { onSelect(day.date) },
                 label = {
                     Column(horizontalAlignment = Alignment.CenterHorizontally) {
                         Text(
@@ -183,6 +268,11 @@ private fun DayChips(
     }
 }
 
+private fun weekLabel(period: SchedulePeriod): String {
+    val first = period.weekStart
+    return "с ${first.format(CHIP_DATE)}"
+}
+
 @Composable
 private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
     Column(Modifier.fillMaxWidth()) {
@@ -196,18 +286,48 @@ private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
         } else {
             slot.lessons.forEach { lesson ->
                 Column(Modifier.fillMaxWidth().padding(vertical = 2.dp)) {
-                    Text(
-                        lesson.subject?.takeIf { it.isNotBlank() } ?: lesson.raw,
-                        style = MaterialTheme.typography.bodyLarge
-                    )
-                    Text(
-                        listOf(lesson.type.label, lesson.subgroup, lesson.teacher, lesson.room)
-                            .filterNotNull()
-                            .filter { it.isNotBlank() }
-                            .joinToString(" · "),
-                        style = MaterialTheme.typography.bodySmall,
-                        color = MaterialTheme.colorScheme.onSurfaceVariant
-                    )
+                    var any = false
+                    if(lesson.type != LessonType.OTHER) {
+                        Text(
+                            lesson.type.label,
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                        any = true
+                    }
+
+                    val subject = lesson.subject?.takeIf { it.isNotBlank() } ?: lesson.raw
+                    if(subject.isNotEmpty()) {
+                        Text(
+                            subject,
+                            style = MaterialTheme.typography.bodyLarge
+                        )
+                        any = true
+                    }
+
+                    val meta = listOfNotNull(
+                        lesson.subgroup,
+                        lesson.teacher,
+                        lesson.room
+                    ).filter { it.isNotBlank() }.joinToString(" · ")
+
+                    if(meta.isNotEmpty()) {
+                        Text(
+                            meta,
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                        any = true
+                    }
+
+                    if(!any) {
+                        Text(
+                            "-",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+
                 }
             }
         }
@@ -226,4 +346,4 @@ private fun dayName(dayOfWeek: DayOfWeek): String = when (dayOfWeek) {
 
 private val FULL_DATE: DateTimeFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy")
 private val CHIP_DATE: DateTimeFormatter = DateTimeFormatter.ofPattern("dd.MM")
-private val TIME: DateTimeFormatter = DateTimeFormatter.ofPattern("HH:mm")
+private val TIME: DateTimeFormatter = DateTimeFormatter.ofPattern("HH:mm")

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

@@ -1,7 +1,6 @@
 package agzam.vyatsu.ui.schedule
 
 import agzam.vyatsu.domain.ScheduleDates
-import agzam.vyatsu.domain.model.Day
 import agzam.vyatsu.domain.model.Schedule
 import agzam.vyatsu.domain.repository.GroupRepository
 import agzam.vyatsu.domain.repository.PreferencesRepository
@@ -12,6 +11,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
+import java.time.LocalDate
 
 class ScheduleViewModel(
     private val scheduleRepository: ScheduleRepository,
@@ -30,7 +30,7 @@ class ScheduleViewModel(
             if (groupId != null) {
                 selectGroup(groupId)
             } else {
-                _uiState.value = _uiState.value.copy(noGroup = true)
+            _uiState.value = _uiState.value.copy(noGroup = true, groupName = null)
             }
         }
     }
@@ -39,33 +39,105 @@ class ScheduleViewModel(
         currentGroupId = groupId
         viewModelScope.launch {
             preferencesRepository.setSelectedGroup(groupId)
-            val groupName = groupRepository.getGroup(groupId)?.name
-            _uiState.value = _uiState.value.copy(noGroup = false, groupName = groupName)
+            val groupName = groupRepository.getGroups().firstOrNull { it.id == groupId }?.name
+
+            val savedWeekStart = runCatching {
+                preferencesRepository.selectedWeekStart()?.let(LocalDate::parse)
+            }.getOrNull()
+            val savedDayDate = runCatching {
+                preferencesRepository.selectedDayDate()?.let(LocalDate::parse)
+            }.getOrNull()
+            _uiState.value = _uiState.value.copy(
+                noGroup = false,
+                groupName = groupName,
+                weekStart = savedWeekStart,
+                dayDate = savedDayDate
+            )
 
             launch {
                 scheduleRepository.observeSchedule(groupId).collect { schedule ->
-                    currentGroupId?.let {
-                        val days = schedule?.days.orEmpty()
-                        val today = todayIndex(days)
-                        val current = _uiState.value
-                        val selected = current.selectedIndex.takeIf { i -> i in days.indices } ?: today
-                        _uiState.value = current.copy(
-                            schedule = schedule,
-                            todayIndex = today,
-                            selectedIndex = selected
-                        )
-                    }
+                    currentGroupId?.let { applySchedule(schedule) }
                 }
             }
 
             launch {
-                _uiState.value = _uiState.value.copy(isSyncing = true)
-                scheduleRepository.sync(groupId)
-                _uiState.value = _uiState.value.copy(isSyncing = false)
+                syncIfMissingToday(groupId)
             }
         }
     }
 
+    private suspend fun applySchedule(schedule: Schedule?) {
+        val current = _uiState.value
+        if (schedule == null || schedule.periods.isEmpty()) {
+            _uiState.value = current.copy(schedule = schedule, todayDate = null)
+            return
+        }
+        val today = ScheduleDates.moscowToday()
+        val todayDate = if (schedule.periodOf(today) != null) today else null
+
+        val weekStart = when {
+            schedule.periods.any { it.weekStart == current.weekStart } -> current.weekStart!!
+            todayDate != null -> schedule.periodOf(todayDate)!!.weekStart
+            else -> schedule.periods.first().weekStart
+        }
+        val period = schedule.periods.first { it.weekStart == weekStart }
+        val weekDays = schedule.daysOf(period)
+
+        val dayDate = when {
+            weekDays.any { it.date == current.dayDate } -> current.dayDate
+            weekDays.any { it.date == todayDate } -> todayDate
+            else -> weekDays.firstOrNull()?.date
+        }
+
+        preferencesRepository.setSelectedWeekStart(weekStart.toString())
+        dayDate?.let { preferencesRepository.setSelectedDayDate(it.toString()) }
+
+        _uiState.value = current.copy(
+            schedule = schedule,
+            weekStart = weekStart,
+            dayDate = dayDate,
+            todayDate = todayDate
+        )
+    }
+
+    fun selectWeek(weekStart: LocalDate) {
+        val state = _uiState.value
+        val schedule = state.schedule ?: return
+        val period = schedule.periods.firstOrNull { it.weekStart == weekStart } ?: return
+        viewModelScope.launch {
+            val today = ScheduleDates.moscowToday()
+            val weekDays = schedule.daysOf(period)
+            val dayDate = when {
+                weekDays.any { it.date == today } -> today
+                else -> weekDays.firstOrNull()?.date
+            }
+            preferencesRepository.setSelectedWeekStart(weekStart.toString())
+            dayDate?.let { preferencesRepository.setSelectedDayDate(it.toString()) }
+            _uiState.value = _uiState.value.copy(weekStart = weekStart, dayDate = dayDate)
+        }
+    }
+
+    fun selectDay(date: LocalDate) {
+        val state = _uiState.value
+        val schedule = state.schedule ?: return
+        val period = schedule.periodOf(date) ?: return
+        viewModelScope.launch {
+            preferencesRepository.setSelectedWeekStart(period.weekStart.toString())
+            preferencesRepository.setSelectedDayDate(date.toString())
+            _uiState.value = _uiState.value.copy(weekStart = period.weekStart, dayDate = date)
+        }
+    }
+
+    private suspend fun syncIfMissingToday(groupId: String) {
+        val schedule = scheduleRepository.getSchedule(groupId)
+        val today = ScheduleDates.moscowToday()
+        val hasTodayPeriod = schedule?.periodOf(today) != null
+        if (hasTodayPeriod) return
+        _uiState.value = _uiState.value.copy(isSyncing = true)
+        scheduleRepository.sync(groupId)
+        _uiState.value = _uiState.value.copy(isSyncing = false)
+    }
+
     fun switchGroup() {
         viewModelScope.launch {
             currentGroupId = null
@@ -79,23 +151,10 @@ class ScheduleViewModel(
         viewModelScope.launch {
             _uiState.value = _uiState.value.copy(isRefreshing = true)
             scheduleRepository.sync(groupId)
-            val current = _uiState.value
-            val days = current.schedule?.days.orEmpty()
-            val today = todayIndex(days)
-            _uiState.value = current.copy(
-                isRefreshing = false,
-                todayIndex = today,
-                selectedIndex = current.selectedIndex.takeIf { it in days.indices } ?: today
-            )
+            _uiState.value = _uiState.value.copy(isRefreshing = false)
         }
     }
 
-    fun selectDay(index: Int) {
-        val days = _uiState.value.schedule?.days.orEmpty()
-        if (index !in days.indices) return
-        _uiState.value = _uiState.value.copy(selectedIndex = index)
-    }
-
     fun clearAll() {
         val groupId = currentGroupId ?: return
         viewModelScope.launch {
@@ -106,29 +165,21 @@ class ScheduleViewModel(
     fun clearSelectedPeriod() {
         val state = _uiState.value
         val schedule = state.schedule ?: return
-        val day = schedule.days.getOrNull(state.selectedIndex) ?: return
-        val period = schedule.periodOf(day.date) ?: return
+        val weekStart = state.weekStart ?: return
+        val period = schedule.periods.firstOrNull { it.weekStart == weekStart } ?: return
         viewModelScope.launch {
             scheduleRepository.clearPeriod(schedule.groupId, period)
         }
     }
-
-    private fun todayIndex(days: List<Day>): Int {
-        if (days.isEmpty()) return 0
-        val today = ScheduleDates.moscowToday()
-        val exact = days.indexOfFirst { it.date == today }
-        if (exact >= 0) return exact
-        val next = days.indexOfFirst { !it.date.isBefore(today) }
-        return if (next >= 0) next else days.lastIndex
-    }
 }
 
 data class ScheduleUiState(
     val noGroup: Boolean = false,
     val isRefreshing: Boolean = false,
     val isSyncing: Boolean = false,
-    val groupName: String? = null,
     val schedule: Schedule? = null,
-    val todayIndex: Int = 0,
-    val selectedIndex: Int = 0
+    val groupName: String? = null,
+    val weekStart: LocalDate? = null,
+    val dayDate: LocalDate? = null,
+    val todayDate: LocalDate? = null
 )