init

app/src/main/java/agzam/vyatsu/AppRoot.kt

@@ -0,0 +1,45 @@
+package agzam.vyatsu
+
+import agzam.vyatsu.di.AppContainer
+import agzam.vyatsu.ui.groups.GroupPickerScreen
+import agzam.vyatsu.ui.groups.GroupPickerViewModel
+import agzam.vyatsu.ui.home.HomeScreen
+import agzam.vyatsu.ui.schedule.ScheduleViewModel
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.platform.LocalContext
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.viewmodel.compose.viewModel
+
+@Composable
+fun AppRoot() {
+    val app = LocalContext.current.applicationContext as VyatsuApplication
+    val container = app.container
+
+    val scheduleViewModel: ScheduleViewModel = viewModel(factory = scheduleFactory(container))
+    val groupPickerViewModel: GroupPickerViewModel = viewModel(factory = groupPickerFactory(container))
+
+    val state by scheduleViewModel.uiState.collectAsState()
+
+    if (state.noGroup) {
+        GroupPickerScreen(
+            viewModel = groupPickerViewModel,
+            onGroupPicked = { group -> scheduleViewModel.selectGroup(group.id) }
+        )
+        return
+    }
+    HomeScreen(
+        scheduleViewModel = scheduleViewModel,
+        onSwitchGroup = { scheduleViewModel.switchGroup() }
+    )
+}
+
+private class SimpleFactory<T : ViewModel>(private val create: () -> T) : ViewModelProvider.Factory {
+    @Suppress("UNCHECKED_CAST")
+    override fun <T : ViewModel> create(modelClass: Class<T>): T = create() as T
+}
+
+private fun scheduleFactory(c: AppContainer): ViewModelProvider.Factory = SimpleFactory { ScheduleViewModel(c.scheduleRepository, c.preferencesRepository) }
+private fun groupPickerFactory(c: AppContainer): ViewModelProvider.Factory = SimpleFactory { GroupPickerViewModel(c.groupRepository) }

app/src/main/java/agzam/vyatsu/MainActivity.kt

@@ -0,0 +1,19 @@
+package agzam.vyatsu
+
+import agzam.vyatsu.ui.theme.VyatsuScheduleTheme
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContent {
+            VyatsuScheduleTheme {
+                AppRoot()
+            }
+        }
+    }
+}

app/src/main/java/agzam/vyatsu/VyatsuApplication.kt

@@ -0,0 +1,16 @@
+package agzam.vyatsu
+
+import agzam.vyatsu.di.AppContainer
+import android.app.Application
+import com.tom_roush.pdfbox.android.PDFBoxResourceLoader
+
+class VyatsuApplication : Application() {
+    lateinit var container: AppContainer
+        private set
+
+    override fun onCreate() {
+        super.onCreate()
+        PDFBoxResourceLoader.init(this)
+        container = AppContainer(this)
+    }
+}

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

@@ -0,0 +1,19 @@
+package agzam.vyatsu.data.local
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+
+@Database(
+    entities = [
+        GroupEntity::class,
+        ScheduleEntity::class,
+        PreferenceEntity::class
+    ],
+    version = 1,
+    exportSchema = false
+)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun groupDao(): GroupDao
+    abstract fun scheduleDao(): ScheduleDao
+    abstract fun preferencesDao(): PreferencesDao
+}

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

@@ -0,0 +1,23 @@
+package agzam.vyatsu.data.local
+
+import agzam.vyatsu.domain.model.Day
+import com.squareup.moshi.JsonClass
+import java.time.LocalDate
+
+@JsonClass(generateAdapter = true)
+data class DayDto(
+    val date: String,
+    val slots: List<SlotDto> = emptyList()
+) {
+    fun toDomain(): Day = Day(
+        date = LocalDate.parse(date),
+        intervals = slots.map { it.toDomain() }
+    )
+
+    companion object {
+        fun fromDomain(d: Day): DayDto = DayDto(
+            date = d.date.toString(),
+            slots = d.intervals.map { SlotDto.fromDomain(it) }
+        )
+    }
+}

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

@@ -0,0 +1,28 @@
+package agzam.vyatsu.data.local
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface GroupDao {
+    @Query("SELECT * FROM groups ORDER BY name")
+    fun observeAll(): Flow<List<GroupEntity>>
+
+    @Query("SELECT * FROM groups WHERE id = :id")
+    suspend fun getById(id: String): GroupEntity?
+
+    @Query("SELECT * FROM groups WHERE faculty = :faculty ORDER BY name")
+    suspend fun getByFaculty(faculty: String): List<GroupEntity>
+
+    @Query("SELECT DISTINCT faculty FROM groups ORDER BY faculty")
+    suspend fun getFaculties(): List<String>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertAll(groups: List<GroupEntity>)
+
+    @Query("SELECT MAX(lastSyncedAt) FROM groups")
+    suspend fun maxSyncedAt(): Long?
+}

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

@@ -0,0 +1,16 @@
+package agzam.vyatsu.data.local
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "groups")
+data class GroupEntity(
+    @PrimaryKey val id: String,
+    val name: String,
+    val faculty: String,
+    val autumnFirst: String,
+    val autumnSecond: String,
+    val springFirst: String,
+    val springSecond: String,
+    val lastSyncedAt: Long
+)

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

@@ -0,0 +1,38 @@
+package agzam.vyatsu.data.local
+
+import agzam.vyatsu.domain.model.Lesson
+import agzam.vyatsu.domain.model.LessonType
+import com.squareup.moshi.JsonClass
+
+@JsonClass(generateAdapter = true)
+data class LessonDto(
+    val raw: String = "",
+    val room: String? = null,
+    val group: String? = null,
+    val subgroup: String? = null,
+    val subject: String? = null,
+    val type: String = "",
+    val teacher: String? = null
+) {
+    fun toDomain(): Lesson = Lesson(
+        raw = raw,
+        room = room?.takeIf { it.isNotBlank() },
+        group = group?.takeIf { it.isNotBlank() },
+        subgroup = subgroup?.takeIf { it.isNotBlank() },
+        subject = subject?.takeIf { it.isNotBlank() },
+        type = runCatching { LessonType.valueOf(type) }.getOrDefault(LessonType.OTHER),
+        teacher = teacher?.takeIf { it.isNotBlank() }
+    )
+
+    companion object {
+        fun fromDomain(l: Lesson): LessonDto = LessonDto(
+            raw = l.raw,
+            room = l.room,
+            group = l.group,
+            subgroup = l.subgroup,
+            subject = l.subject,
+            type = l.type.name,
+            teacher = l.teacher
+        )
+    }
+}

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

@@ -0,0 +1,10 @@
+package agzam.vyatsu.data.local
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "preferences")
+data class PreferenceEntity(
+    @PrimaryKey val key: String,
+    val value: String
+)

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

@@ -0,0 +1,18 @@
+package agzam.vyatsu.data.local
+
+import androidx.room.Dao
+import androidx.room.Query
+
+@Dao
+interface PreferencesDao {
+    @Query("SELECT value FROM preferences WHERE key = 'selectedGroupId'")
+    suspend fun selectedGroupId(): String?
+
+    @Query(
+        "INSERT OR REPLACE INTO preferences(key, value) VALUES('selectedGroupId', :groupId)"
+    )
+    suspend fun setSelectedGroup(groupId: String)
+
+    @Query("DELETE FROM preferences WHERE key = 'selectedGroupId'")
+    suspend fun clearSelectedGroup()
+}

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

@@ -0,0 +1,25 @@
+package agzam.vyatsu.data.local
+
+import agzam.vyatsu.domain.model.Day
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.Types
+
+class ScheduleCodec(moshi: Moshi) {
+    private val type: java.lang.reflect.Type =
+        Types.newParameterizedType(List::class.java, DayDto::class.java)
+    private val adapter = moshi.adapter<List<DayDto>>(type)
+
+    fun toJson(days: List<Day>): String {
+        val dto = days.map { DayDto.fromDomain(it) }
+        return adapter.toJson(dto)
+    }
+
+    fun fromJson(json: String): List<Day> {
+        return try {
+            val dto = adapter.fromJson(json) ?: return emptyList()
+            dto.map { it.toDomain() }
+        } catch (t: Throwable) {
+            emptyList()
+        }
+    }
+}

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

@@ -0,0 +1,22 @@
+package agzam.vyatsu.data.local
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface ScheduleDao {
+    @Query("SELECT * FROM schedules WHERE groupId = :groupId")
+    fun observe(groupId: String): Flow<ScheduleEntity?>
+
+    @Query("SELECT * FROM schedules WHERE groupId = :groupId")
+    suspend fun get(groupId: String): ScheduleEntity?
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun upsert(entity: ScheduleEntity)
+
+    @Query("DELETE FROM schedules WHERE groupId = :groupId")
+    suspend fun delete(groupId: String)
+}

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

@@ -0,0 +1,14 @@
+package agzam.vyatsu.data.local
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "schedules")
+data class ScheduleEntity(
+    @PrimaryKey val groupId: String,
+    val season: String,
+    val dateRangeFirst: String,
+    val dateRangeSecond: String,
+    val weeksJson: String,
+    val lastSyncedAt: Long
+)

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

@@ -0,0 +1,26 @@
+package agzam.vyatsu.data.local
+
+import agzam.vyatsu.domain.model.TimeSlot
+import com.squareup.moshi.JsonClass
+import java.time.LocalTime
+
+@JsonClass(generateAdapter = true)
+data class SlotDto(
+    val start: String,
+    val end: String,
+    val lessons: List<LessonDto> = emptyList()
+) {
+    fun toDomain(): TimeSlot = TimeSlot(
+        start = LocalTime.parse(start),
+        end = LocalTime.parse(end),
+        lessons = lessons.map { it.toDomain() }
+    )
+
+    companion object {
+        fun fromDomain(s: TimeSlot): SlotDto = SlotDto(
+            start = s.start.toString(),
+            end = s.end.toString(),
+            lessons = s.lessons.map { LessonDto.fromDomain(it) }
+        )
+    }
+}

app/src/main/java/agzam/vyatsu/data/remote/GroupsParser.kt

@@ -0,0 +1,80 @@
+package agzam.vyatsu.data.remote
+
+import agzam.vyatsu.domain.model.DateRange
+import agzam.vyatsu.domain.model.Group
+import agzam.vyatsu.domain.model.Season
+import android.util.Log
+import org.jsoup.Jsoup
+
+/**
+ * Основано на https://github.com/alirzaev/vyatsu-schedule-backend/blob/master/utils/extractors.py
+ * @author Agzam
+ */
+object GroupsParser {
+
+    private val groupPattern = Regex("""/reports/schedule/Group/(\d{4,})_([12])_(\d{8})_(\d{8})\.pdf""")
+
+    private val shorthands = mapOf(
+        "Институт биологии и биотехнологии (факультет)(ОРУ)" to "ИББТ",
+        "Институт химии и экологии (факультет) (ОРУ)" to "ИнХимЭк",
+        "Факультет автоматики и вычислительной техники (ОРУ)" to "ФАВТ",
+        "Факультет истории, политических наук и культурологии (ОРУ)" to "ФИПНК",
+        "Факультет компьютерных и физико-математических наук (ОРУ)" to "ФКФМН",
+        "Факультет лингвистики (ОРУ)" to "ФЛ",
+        "Факультет менеджмента и сервиса (ОРУ)" to "ФМиС",
+        "Факультет педагогики и психологии (ОРУ)" to "ФПП",
+        "Факультет строительства и архитектуры (ОРУ)" to "ФСА",
+        "Факультет технологий, инжиниринга и дизайна (ОРУ)" to "ФТИД",
+        "Факультет физической культуры и спорта (ОРУ)" to "ФФКС",
+        "Факультет филологии и медиакоммуникаций (ОРУ)" to "ФФМ",
+        "Факультет экономики и финансов (ОРУ)" to "ФЭиФ",
+        "Электротехнический факультет (ОРУ)" to "ЭТФ",
+        "Юридический институт (факультет) (ОРУ)" to "ЮИ"
+    )
+
+    /**
+     * Извлекает список групп с HTML страницы
+     */
+    fun parseGroups(html: String): List<Group> {
+        val doc = Jsoup.parse(html)
+        val container = doc.selectFirst("div.column-center_rasp") ?: return emptyList()
+        val tables = container.select("table[style~=border: none !important]")
+
+        return tables.flatMap { table ->
+            table.select("> tbody > tr, > tr").flatMap { row ->
+                Log.v("ROW", row.html());
+                val faculty = shortname(row.selectFirst("div.fak_name")?.text().orEmpty()) //
+
+                row.select("div.grpPeriod").map { grp ->
+                    Group(
+                        id = grp.attr("data-grp_period_id").dropLast(1),
+                        name = removeParenthesized(grp.text()),
+                        faculty = faculty
+                    )
+                }
+            }
+        }
+    }
+
+    fun parseDateRanges(html: String): Map<String, Map<Season, List<DateRange>>> {
+        val result = HashMap<String, HashMap<Season, MutableList<DateRange>>>()
+        groupPattern.findAll(html).forEach { m ->
+            val groupId = m.groupValues[1]
+            val season = if (m.groupValues[2] == "1") Season.AUTUMN else Season.SPRING
+            val range = DateRange(m.groupValues[3], m.groupValues[4])
+            result
+                .getOrPut(groupId) { hashMapOf(Season.AUTUMN to mutableListOf(), Season.SPRING to mutableListOf()) }
+                .getOrPut(season) { mutableListOf() }
+                .add(range)
+        }
+        return result
+    }
+
+    private fun shortname(name: String): String {
+        val stripped = removeParenthesized(name)
+        val sh = shorthands[name]
+        return if (sh != null) "$sh ($stripped)" else stripped
+    }
+
+    private fun removeParenthesized(name: String): String = name.replace(Regex("""\(.*?\)\s?"""), "").trim()
+}

app/src/main/java/agzam/vyatsu/data/remote/VyatsuHttpClient.kt

@@ -0,0 +1,38 @@
+package agzam.vyatsu.data.remote
+
+import android.util.Log
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import java.util.concurrent.TimeUnit
+
+/**
+ * @author Agzam
+ */
+object VyatsuHttpClient {
+
+    private const val TAG = "HTTP"
+
+    private val client: OkHttpClient = OkHttpClient.Builder()
+        .connectTimeout(15, TimeUnit.SECONDS)
+        .readTimeout(30, TimeUnit.SECONDS)
+        .build()
+
+    suspend fun getText(url: String): String = withContext(Dispatchers.IO) {
+        client.newCall(Request.Builder().url(url).build()).execute().use { resp ->
+            Log.d(TAG, "GET $url -> ${resp.code}")
+            check(resp.isSuccessful) { "HTTP ${resp.code} for $url" }
+            resp.body!!.string()
+        }
+    }
+
+    suspend fun getBytes(url: String): ByteArray = withContext(Dispatchers.IO) {
+        client.newCall(Request.Builder().url(url).build()).execute().use { resp ->
+            Log.d(TAG, "GET $url -> ${resp.code}")
+            check(resp.isSuccessful) { "HTTP ${resp.code} for $url" }
+            resp.body!!.bytes()
+        }
+    }
+
+}

app/src/main/java/agzam/vyatsu/data/remote/VyatsuUrls.kt

@@ -0,0 +1,13 @@
+package agzam.vyatsu.data.remote
+
+import agzam.vyatsu.domain.model.DateRange
+import agzam.vyatsu.domain.model.Season
+
+object VyatsuUrls {
+
+    const val GROUPS_PAGE = "https://www.vyatsu.ru/studentu-1/spravochnaya-informatsiya/raspisanie-zanyatiy-dlya-studentov.html"
+    const val PDF_BASEURL = "https://www.vyatsu.ru/reports/schedule/Group"
+
+    fun groupPdfUrl(groupId: String, season: Season, range: DateRange): String = "$PDF_BASEURL/${groupId}_${season.apiKey}_${range.first}_${range.second}.pdf"
+
+}

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

@@ -0,0 +1,244 @@
+package agzam.vyatsu.data.remote.pdf
+
+import android.graphics.Path
+import android.graphics.PointF
+import com.tom_roush.pdfbox.contentstream.PDFGraphicsStreamEngine
+import com.tom_roush.pdfbox.cos.COSName
+import com.tom_roush.pdfbox.pdmodel.PDPage
+import com.tom_roush.pdfbox.pdmodel.graphics.color.PDColor
+import com.tom_roush.pdfbox.pdmodel.graphics.image.PDImage
+import java.util.Locale
+import kotlin.math.max
+import kotlin.math.min
+
+/**
+ * - Парсит страницу PDF в набор линий
+ * - Позволяет получить таблицу
+ * - Позволяет конвертировать в SVG (для отладки)
+ *
+ * Требуется вызов [processPage] для парсинга
+ * @author Agzam
+ */
+class Pdf2Table(page: PDPage) : PDFGraphicsStreamEngine(page) {
+
+    data class PdfLine(val x1: Float, val y1: Float, val x2: Float, val y2: Float) {
+        val left: Float get() = min(x1, x2)
+        val right: Float get() = max(x1, x2)
+        val top: Float get() = min(y1, y2)
+        val bottom: Float get() = max(y1, y2)
+    }
+    data class TableColumn(val x: Float, val width: Float, val cells: List<TableCell>) {
+        val right: Float get() = x + width
+    }
+    data class TableCell(val x: Float, val y: Float, val width: Float, val height: Float) {
+        val centerY: Float get() = y + height/2f
+    }
+
+    private val _lines = mutableListOf<PdfLine>()
+
+    private val svgBuilder = StringBuilder()
+    private val currentPath = StringBuilder()
+    private val tableSvg = StringBuilder()
+
+
+    private val currentSubPathLines = mutableListOf<PdfLine>()
+    private var lastPoint = PointF(0f, 0f)
+
+    /**
+     * Представляет страницу в SVG формате
+     */
+    fun asSvg(): String {
+        val mediaBox = page.mediaBox
+        val width = mediaBox.width
+        val height = mediaBox.height
+        return """
+            <svg width="$width" height="$height" viewBox="0 0 $width $height" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+                <g>${svgBuilder}</g>
+                <g>${tableSvg}</g>
+            </svg>
+        """.trimIndent()
+    }
+
+    override fun appendRectangle(rp0: PointF?, rp1: PointF?, rp2: PointF?, rp3: PointF?) {
+        if (rp0 == null || rp1 == null || rp2 == null || rp3 == null) return
+        val p0 = t(rp0)
+        val p1 = t(rp1)
+        val p2 = t(rp2)
+        val p3 = t(rp3)
+        currentPath.append(String.format(Locale.US, "M %.2f %.2f L %.2f %.2f L %.2f %.2f L %.2f %.2f Z ", p0.x, p0.y, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y))
+        currentSubPathLines.add(PdfLine(p0.x, p0.y, p1.x, p1.y))
+        currentSubPathLines.add(PdfLine(p1.x, p1.y, p2.x, p2.y))
+        currentSubPathLines.add(PdfLine(p2.x, p2.y, p3.x, p3.y))
+        currentSubPathLines.add(PdfLine(p3.x, p3.y, p0.x, p0.y))
+        lastPoint.set(p3.x, p3.y)
+    }
+
+    override fun moveTo(rx: Float, ry: Float) {
+        val x = tx(rx)
+        val y = ty(ry)
+        currentPath.append(String.format(Locale.US, "M %.2f %.2f ", x, y))
+        lastPoint.set(x, y)
+    }
+
+    override fun lineTo(rx: Float, ry: Float) {
+        val x = tx(rx)
+        val y = ty(ry)
+        currentPath.append(String.format(Locale.US, "L %.2f %.2f ", x, y))
+        currentSubPathLines.add(PdfLine(lastPoint.x, lastPoint.y, x, y))
+        lastPoint.set(x, y)
+    }
+
+    override fun curveTo(rcx1: Float, rcy1: Float, rcx2: Float, rcy2: Float, ex: Float, ey: Float) {
+        val cx1 = tx(rcx1)
+        val cy1 = ty(rcy1)
+        val cx2 = tx(rcx2)
+        val cy2 = ty(rcy2)
+        val endX = tx(ex)
+        val endY = ty(ey)
+        currentPath.append(String.format(Locale.US, "C %.2f %.2f, %.2f %.2f, %.2f %.2f ", cx1, cy1, cx2, cy2, endX, endY))
+        lastPoint.set(endX, endY)
+    }
+
+    override fun getCurrentPoint(): PointF {
+        return lastPoint
+    }
+
+    override fun closePath() {
+        currentPath.append("Z ")
+    }
+
+    override fun endPath() {
+        currentPath.clear()
+        currentSubPathLines.clear()
+    }
+
+    override fun strokePath() {
+        val strokeColor = graphicsState.strokingColor.toRGBHex()
+        val lineWidth = graphicsState.lineWidth
+        if (currentPath.isNotEmpty()) {
+            svgBuilder.append("<path d=\"$currentPath\" stroke=\"$strokeColor\" stroke-width=\"$lineWidth\" fill=\"none\" />\n")
+            _lines.addAll(currentSubPathLines)
+        }
+        currentPath.clear()
+        currentSubPathLines.clear()
+    }
+
+    override fun fillPath(p0: Path.FillType?) {
+        val fillColor = graphicsState.nonStrokingColor.toRGBHex()
+        val rule = if (p0 == Path.FillType.EVEN_ODD) "evenodd" else "nonzero"
+        if (currentPath.isNotEmpty()) {
+            svgBuilder.append("<path d=\"$currentPath\" fill=\"$fillColor\" fill-rule=\"$rule\" />\n")
+             _lines.addAll(currentSubPathLines)
+        }
+        currentPath.clear()
+        currentSubPathLines.clear()
+    }
+
+    override fun fillAndStrokePath(p0: Path.FillType?) {
+        val strokeColor = graphicsState.strokingColor.toRGBHex()
+        val fillColor = graphicsState.nonStrokingColor.toRGBHex()
+        val lineWidth = graphicsState.lineWidth
+        val rule = if (p0 == Path.FillType.EVEN_ODD) "evenodd" else "nonzero"
+        if (currentPath.isNotEmpty()) {
+            svgBuilder.append("<path d=\"$currentPath\" fill=\"$fillColor\" fill-rule=\"$rule\" stroke=\"$strokeColor\" stroke-width=\"$lineWidth\" />\n")
+            _lines.addAll(currentSubPathLines)
+        }
+        currentPath.clear()
+        currentSubPathLines.clear()
+    }
+
+    override fun shadingFill(p0: COSName?) {
+        currentPath.clear()
+        currentSubPathLines.clear()
+    }
+
+    private fun PDColor.toRGBHex(): String {
+        return try {
+            val rgb = this.toRGB()
+            String.format(Locale.US, "#%06X", rgb and 0xFFFFFF)
+        } catch (_: Exception) {
+            "#000000"
+        }
+    }
+
+    override fun drawImage(p0: PDImage?) {}
+    override fun clip(p0: Path.FillType?) {}
+
+    private fun tx(x: Float): Float {
+        return x
+    }
+    private fun ty(y: Float): Float {
+        return page.mediaBox.height - y
+    }
+    private fun t(p: PointF): PointF {
+        return PointF(tx(p.x), ty(p.y))
+    }
+
+    /**
+     * Представляет страницу как набор колонок с ячейками
+     *
+     * Сначала делит страницу на столбики, затем, изолированно для каждого столбика делит его на ячейки
+     */
+    fun asTable(): List<TableColumn> {
+        val verticalLines = _lines.filter { it.x1 == it.x2 }
+        val horizontalLines = _lines.filter { it.y1 == it.y2 }
+
+        // Список уникальных "x", чтобы разделить весь лист на колонки
+        val xs = merge(verticalLines.map { it.x1 })
+
+        for (v in horizontalLines) {
+            tableSvg.append("<rect fill='#0000ff55' x='${v.left}' y='${v.top}' width='${v.right-v.left}' height='3'/>\n")
+        }
+
+        val columns = mutableListOf<TableColumn>()
+        for (i in 0 until xs.size - 1) {
+            val left = xs[i]
+            val right = xs[i + 1]
+
+            tableSvg.append("<rect fill='${if (i % 2 == 0) "#f00" else "#0f0"}' x='$left' y='3' width='${right-left}' height='3'/>\n")
+
+            val colWidth = right - left
+            if (colWidth <= 2f) continue
+
+            // Выборка горизонтальных линиий которые пересекают колонку
+            val linesInColumn = horizontalLines.filter { line -> (line.left-2f <= left && right <= line.right+2f) }
+
+            val ys = merge(linesInColumn.map { it.y1 }) // Уникальные "y", чтобы разделить уже столбик
+
+            val cells = mutableListOf<TableCell>()
+            for (ii in 0 until ys.size - 1) {
+                val top = ys[ii]
+                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")
+            }
+            columns.add(TableColumn(left, right-left, cells))
+        }
+
+        return columns
+    }
+
+    /**
+     * Убирает дубликаты, схлопывает близкие точки
+     */
+    private fun merge(fs: List<Float>): List<Float> {
+        val s = fs.distinct().sorted()
+        val result = mutableListOf<Float>()
+        if(s.isEmpty()) return result
+        result.add(s[0])
+        var pad = 0f
+        for (i in 0 until s.size - 1) {
+            val dst = s[i + 1] - s[i]
+            if (dst <= 4f) {
+                pad = dst/2f
+                result[result.size-1] = result.last() + pad
+                continue
+            }
+            result.add(s[i+1]+pad)
+            pad = 0f
+        }
+        return result
+    }
+
+}

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

@@ -0,0 +1,147 @@
+package agzam.vyatsu.data.remote.pdf
+
+import agzam.vyatsu.domain.model.Day
+import agzam.vyatsu.domain.model.Lesson
+import agzam.vyatsu.domain.model.TimeSlot
+import android.util.Log
+import com.tom_roush.pdfbox.pdmodel.PDDocument
+import java.time.LocalDate
+import java.time.LocalTime
+import java.time.format.DateTimeFormatter
+import kotlin.math.roundToInt
+
+/**
+ * Парсинг расписания из PDF
+ * @author Agzam
+ */
+object PdfScheduleParser {
+
+    private const val TAG = "PDF-SCHEDULE"
+    private const val SVG_TAG = "PDF-SVG"
+
+    private val TIME_FORMAT = DateTimeFormatter.ofPattern("HH:mm")
+    private val DATE_FORMAT = DateTimeFormatter.ofPattern("dd.MM.yy")
+
+    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() }
+
+    fun parse(pdfBytes: ByteArray): List<Day> {
+        Log.d(TAG, "Parsing ${pdfBytes.size} bytes")
+        val doc = try {
+            PDDocument.load(pdfBytes)
+        } catch (t: Throwable) {
+            Log.e(TAG, "PDDocument.load failed", t)
+            throw t
+        }
+
+        val days = mutableListOf<Day>()
+        try {
+            for (pageIndex in 0 until doc.numberOfPages) {
+                Log.v(TAG, "============ Page $pageIndex ============")
+
+                // Парсинг ячеек таблицы
+                val page = doc.getPage(pageIndex)
+                val svg = Pdf2Table(page)
+                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
+                val textStripper = PdfTextParser()
+                textStripper.startPage = pageIndex + 1
+                textStripper.endPage = pageIndex + 1
+                textStripper.getText(doc)
+                val texts = textStripper.blocks
+
+                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
+
+                Log.v(TAG, "Days:  ${cols[0].cells.size}")
+                Log.v(TAG, "Times: ${cols[1].cells.size}")
+                Log.v(TAG, "Types: ${cols[2].cells.size}")
+
+                /** Мерджит ячейки в одну строку, пробел в качестве слиятиля */
+                fun join(texts: List<PdfTextParser.TextBlock>): String {
+                    val text = StringBuilder()
+                    for (t in texts) {
+                        if(!text.isEmpty()) text.append(' ')
+                        text.append(t.text)
+                    }
+                    return text.toString()
+                }
+
+                /**
+                 * Извлекает контент из PDF внутри ячейки
+                 * (Подразумевается что в ячейке нет "\n", поэтому используется пробел для слияния)
+                 */
+                fun content(cell: Pdf2Table.TableCell): String {
+                    return join(texts.filter {
+                        cell.x <= it.x && it.x <= cell.x + cell.width && cell.y <= it.y && it.y < cell.y + cell.height
+                    })
+                }
+
+                /**
+                 * Выбирает все ячейки в целевой колонке, которые находятся на одном уровне (строке) с заданной ячейкой
+                 * @param column - целевая колонка, в которой производится поиск ячеек.
+                 * @param cell - ячейка-ориентир, определяющая границы строки по вертикали.
+                 * @return Список ячеек из [column], попавших в диапазон строки
+                 */
+                fun select(column: Pdf2Table.TableColumn, cell: Pdf2Table.TableCell): List<Pdf2Table.TableCell> {
+                    return column.cells.filter {
+                        cell.y <= it.centerY && it.centerY < cell.y + cell.height
+                    }
+                }
+
+
+                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?
+
+                    val date = dateFrom(day[1]) ?: continue
+                    val intervals = mutableListOf<TimeSlot>()
+                    // TODO: день недели (а нужен ли?)
+
+                    Log.v(TAG, "############################## $day ############################## ")
+                    for(intervalCell in select(intervalsColumn, dayCell)) { // День содержит интервалы
+                        val timeContent = content(intervalCell)
+                        val range = timeContent.split('-')
+                        if(range.size != 2) continue // XXX: выбрасывать ошибку?
+
+                        val start   = timeFrom(range[0]) ?: continue
+                        val end     = timeFrom(range[1]) ?: continue
+                        val lessons = mutableListOf<Lesson>()
+
+                        Log.v(TAG, "=== $timeContent ===")
+                        for(lessonCell in select(lessonsColumn, intervalCell)) { // Информация о паре, может быть разбита, например на подгруппы
+                            val content = content(lessonCell)
+                            Log.v(TAG, "- $content")
+                            // TODO: парсинг контента лекции
+                            lessons.add(Lesson(raw=content))
+                        }
+                        intervals.add(TimeSlot(start = start, end = end, lessons = lessons))
+                    }
+                    days.add(Day(date=date, intervals=intervals))
+                }
+                for (text in texts.filter { it.rotation != 0f }) {
+                    Log.v(TAG, "${text.x.roundToInt()}\t${text.y.roundToInt()}\t${text.text}")
+                }
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Parsing error", e)
+            e.printStackTrace()
+        } finally {
+            doc.close()
+        }
+        Log.v(TAG, "Days extracted: $days")
+        return days
+    }
+
+}

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

@@ -0,0 +1,45 @@
+package agzam.vyatsu.data.remote.pdf
+
+import com.tom_roush.pdfbox.text.PDFTextStripper
+import com.tom_roush.pdfbox.text.TextPosition
+
+/**
+ * Парсер блоков текста из PDF
+ * @author Agzam
+ */
+class PdfTextParser : PDFTextStripper() {
+
+    data class TextBlock(
+        val text: String,
+        val x: Float,
+        val y: Float,
+        val width: Float,
+        val height: Float,
+        val rotation: Float
+    )
+
+    val blocks = mutableListOf<TextBlock>()
+
+    init {
+        sortByPosition = true
+    }
+
+    override fun writeString(string: String?, textPositions: MutableList<TextPosition>?) {
+        if (!string.isNullOrBlank() && !textPositions.isNullOrEmpty()) {
+            val first = textPositions.first()
+            val last = textPositions.last()
+
+            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(string.trim(), x, currentPage.mediaBox.height - y - height, totalWidth, height, rotation))
+        }
+    }
+}

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

@@ -0,0 +1,74 @@
+package agzam.vyatsu.data.repository
+
+import agzam.vyatsu.data.local.GroupDao
+import agzam.vyatsu.data.local.GroupEntity
+import agzam.vyatsu.data.remote.GroupsParser
+import agzam.vyatsu.data.remote.VyatsuHttpClient
+import agzam.vyatsu.data.remote.VyatsuUrls
+import agzam.vyatsu.domain.model.Group
+import agzam.vyatsu.domain.model.Season
+import agzam.vyatsu.domain.repository.GroupRepository
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.map
+
+class GroupRepositoryImpl(
+    private val groupDao: GroupDao,
+) : GroupRepository {
+
+    override fun observeGroups(): Flow<List<Group>> =
+        groupDao.observeAll().map { list -> list.map { it.toDomain() } }
+
+    override suspend fun getGroups(): List<Group> =
+        groupDao.observeAll().first().map { it.toDomain() }
+
+    override suspend fun getFaculties(): List<String> = groupDao.getFaculties()
+
+    override suspend fun refreshIfStale(): Boolean {
+        val last = groupDao.maxSyncedAt()
+        if (last != null && now() - last < STALE_WINDOW_MS) {
+            return true
+        }
+        refresh()
+        return true
+    }
+
+    override suspend fun forceRefresh(): Boolean {
+        refresh()
+        return true
+    }
+
+    private suspend fun refresh() {
+        val html = VyatsuHttpClient.getText(VyatsuUrls.GROUPS_PAGE)
+        val groups = GroupsParser.parseGroups(html)
+        val ranges = GroupsParser.parseDateRanges(html)
+        val entities = groups.map { group ->
+            val range = ranges[group.id]
+            val autumn = range?.get(Season.AUTUMN)?.lastOrNull()
+            val spring = range?.get(Season.SPRING)?.lastOrNull()
+            GroupEntity(
+                id = group.id,
+                name = group.name,
+                faculty = group.faculty,
+                autumnFirst = autumn?.first ?: "",
+                autumnSecond = autumn?.second ?: "",
+                springFirst = spring?.first ?: "",
+                springSecond = spring?.second ?: "",
+                lastSyncedAt = now()
+            )
+        }
+        groupDao.insertAll(entities)
+    }
+
+    private fun now(): Long = System.currentTimeMillis()
+
+    private fun GroupEntity.toDomain(): Group = Group(
+        id = id,
+        name = name,
+        faculty = faculty
+    )
+
+    companion object {
+        private const val STALE_WINDOW_MS = 12 * 60 * 60 * 1000L
+    }
+}

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

@@ -0,0 +1,12 @@
+package agzam.vyatsu.data.repository
+
+import agzam.vyatsu.data.local.PreferencesDao
+import agzam.vyatsu.domain.repository.PreferencesRepository
+
+class PreferencesRepositoryImpl(
+    private val dao: PreferencesDao
+) : PreferencesRepository {
+    override suspend fun selectedGroupId(): String? = dao.selectedGroupId()
+    override suspend fun setSelectedGroup(groupId: String) = dao.setSelectedGroup(groupId)
+    override suspend fun clearSelectedGroup() = dao.clearSelectedGroup()
+}

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

@@ -0,0 +1,105 @@
+package agzam.vyatsu.data.repository
+
+import agzam.vyatsu.data.local.ScheduleCodec
+import agzam.vyatsu.data.local.ScheduleDao
+import agzam.vyatsu.data.local.ScheduleEntity
+import agzam.vyatsu.data.local.GroupDao
+import agzam.vyatsu.data.local.GroupEntity
+import agzam.vyatsu.data.remote.pdf.PdfScheduleParser
+import agzam.vyatsu.data.remote.VyatsuHttpClient
+import agzam.vyatsu.data.remote.VyatsuUrls
+import agzam.vyatsu.domain.ScheduleDates
+import agzam.vyatsu.domain.model.DateRange
+import agzam.vyatsu.domain.model.Schedule
+import agzam.vyatsu.domain.model.Season
+import agzam.vyatsu.domain.repository.ScheduleRepository
+import android.util.Log
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+
+class ScheduleRepositoryImpl(
+    private val scheduleDao: ScheduleDao,
+    private val groupDao: GroupDao,
+    private val codec: ScheduleCodec
+) : ScheduleRepository {
+
+    override fun observeSchedule(groupId: String): Flow<Schedule?> =
+        scheduleDao.observe(groupId).map { it?.toDomain() }
+
+    override suspend fun getSchedule(groupId: String): Schedule? =
+        scheduleDao.get(groupId)?.toDomain()
+
+    override suspend fun sync(groupId: String): Schedule? {
+        Log.d(TAG, "sync(groupId=$groupId) start")
+        val group = groupDao.getById(groupId)
+        if (group == null) {
+            Log.w(TAG, "sync: group $groupId not found in DB")
+            return null
+        }
+        val season = ScheduleDates.currentSeason()
+        val range = dateRangeFor(group, season)
+        if (range == null) {
+            Log.w(TAG, "sync: no date range for season $season (group ${group.id}, " +
+                "autumn=[${group.autumnFirst}, ${group.autumnSecond}], " +
+                "spring=[${group.springFirst}, ${group.springSecond}])")
+            return null
+        }
+        Log.d(TAG, "sync: season=$season range=[${range.first}, ${range.second}]")
+
+        return try {
+            val pdfUrl = VyatsuUrls.groupPdfUrl(groupId, season, range)
+            Log.d(TAG, "sync: downloading $pdfUrl")
+            val bytes = VyatsuHttpClient.getBytes(pdfUrl)
+            Log.d(TAG, "sync: downloaded ${bytes.size} bytes")
+
+            val days = PdfScheduleParser.parse(bytes)
+            Log.d(TAG, "sync: parsed ${days.size} days")
+
+            val entity = ScheduleEntity(
+                groupId = groupId,
+                season = season.name,
+                dateRangeFirst = range.first,
+                dateRangeSecond = range.second,
+                weeksJson = codec.toJson(days),
+                lastSyncedAt = now()
+            )
+            scheduleDao.upsert(entity)
+            Log.d(TAG, "sync: upserted schedule for $groupId")
+            entity.toDomain()
+        } catch (e: Throwable) {
+            Log.e(TAG, "sync: failed for $groupId (${e::class.simpleName}: ${e.message})", e)
+            null
+        }
+    }
+
+    override suspend fun isStale(groupId: String): Boolean {
+        val entity = scheduleDao.get(groupId) ?: return true
+        return now() - entity.lastSyncedAt > STALE_WINDOW_MS
+    }
+
+    override suspend fun clear(groupId: String) = scheduleDao.delete(groupId)
+
+    private fun dateRangeFor(group: GroupEntity, season: Season): DateRange? {
+        return when (season) {
+            Season.AUTUMN -> if (group.autumnFirst.isNotEmpty() && group.autumnSecond.isNotEmpty()) {
+                DateRange(group.autumnFirst, group.autumnSecond)
+            } else null
+            Season.SPRING -> if (group.springFirst.isNotEmpty() && group.springSecond.isNotEmpty()) {
+                DateRange(group.springFirst, group.springSecond)
+            } else null
+        }
+    }
+
+    private fun now(): Long = System.currentTimeMillis()
+
+    private fun ScheduleEntity.toDomain(): Schedule = Schedule(
+        groupId = groupId,
+        season = Season.valueOf(season),
+        days = codec.fromJson(weeksJson)
+    )
+
+    companion object {
+        private const val STALE_WINDOW_MS = 12 * 60 * 60 * 1000L
+        private const val TAG = "ScheduleRepo"
+    }
+}

app/src/main/java/agzam/vyatsu/data/static/Buildings.kt

@@ -0,0 +1,34 @@
+package agzam.vyatsu.data.static
+
+data class Building(
+    val number: Int,
+    val address: String,
+    val latitude: Double,
+    val longitude: Double
+)
+
+val BUILDINGS: List<Building> = listOf(
+    Building(1, "ул. Московская, д. 36", 58.602692, 49.666638),
+    Building(2, "ул. Московская, д. 39", 58.604297, 49.665926),
+    Building(3, "ул. Московская, д. 29", 58.604258, 49.673772),
+    Building(4, "ул. К.Либкнехта, д. 76 (1 корпус)", 58.602210, 49.665506),
+    Building(5, "ул. Карла Маркса, д. 77", 58.599995, 49.667861),
+    Building(6, "Студенческий проезд, д. 9", 58.605119, 49.618132),
+    Building(7, "ул. Преображенская, д. 32", 58.605315, 49.673662),
+    Building(8, "Студенческий проезд, д. 11", 58.604574, 49.618105),
+    Building(9, "Студенческий проезд, д. 11а", 58.604417, 49.617226),
+    Building(10, "ул. Ломоносова, д. 18а", 58.604644, 49.615911),
+    Building(11, "ул. Преображенская, д. 41", 58.605713, 49.670755),
+    Building(12, "ул. Ленина, д. 127", 58.586882, 49.681758),
+    Building(13, "ул. Красноармейская, д. 26", 58.591304, 49.676543),
+    Building(14, "ул. Ленина, д. 111", 58.591637, 49.680732),
+    Building(15, "ул. Ленина, д. 198", 58.567400, 49.686333),
+    Building(16, "ул. Свободы, д. 122", 58.591296, 49.678238),
+    Building(17, "ул. Ленина, д. 111а", 58.591030, 49.681094),
+    Building(18, "ул. Молодой Гвардии, д. 13", 58.598915, 49.687212),
+    Building(19, "ул. Орловская, д. 12", 58.596234, 49.687395),
+    Building(20, "ул. Ленина, д. 113", 58.590819, 49.681423),
+    Building(21, "ул. Ленина, д. 111а", 58.591030, 49.681094),
+    Building(22, "ул. Ленина, д. 111а", 58.591030, 49.681094),
+    Building(23, "ул. Володарского, д. 2", 58.616236, 49.671680)
+)

app/src/main/java/agzam/vyatsu/data/static/Calls.kt

@@ -0,0 +1,13 @@
+package agzam.vyatsu.data.static
+
+data class CallTime(val start: String, val end: String)
+
+val CALLS: List<CallTime> = listOf(
+    CallTime("8:20", "9:50"),
+    CallTime("10:00", "11:30"),
+    CallTime("11:45", "13:15"),
+    CallTime("14:00", "15:30"),
+    CallTime("15:45", "17:15"),
+    CallTime("17:20", "18:50"),
+    CallTime("18:55", "20:25")
+)

app/src/main/java/agzam/vyatsu/di/AppContainer.kt

@@ -0,0 +1,45 @@
+package agzam.vyatsu.di
+
+import agzam.vyatsu.data.local.AppDatabase
+import agzam.vyatsu.data.local.ScheduleCodec
+import agzam.vyatsu.data.remote.GroupsParser
+import agzam.vyatsu.data.remote.VyatsuHttpClient
+import agzam.vyatsu.data.repository.GroupRepositoryImpl
+import agzam.vyatsu.data.repository.PreferencesRepositoryImpl
+import agzam.vyatsu.data.repository.ScheduleRepositoryImpl
+import agzam.vyatsu.domain.repository.GroupRepository
+import agzam.vyatsu.domain.repository.PreferencesRepository
+import agzam.vyatsu.domain.repository.ScheduleRepository
+import android.content.Context
+import androidx.room.Room
+import com.squareup.moshi.Moshi
+
+class AppContainer(context: Context) {
+    private val moshi: Moshi = Moshi.Builder().build()
+
+    private val database: AppDatabase = Room.databaseBuilder(
+        context.applicationContext,
+        AppDatabase::class.java,
+        "vyatsu_schedule.db"
+    ).build()
+
+    private val codec: ScheduleCodec = ScheduleCodec(moshi)
+
+    val groupRepository: GroupRepository by lazy {
+        GroupRepositoryImpl(
+            groupDao = database.groupDao(),
+        )
+    }
+
+    val scheduleRepository: ScheduleRepository by lazy {
+        ScheduleRepositoryImpl(
+            scheduleDao = database.scheduleDao(),
+            groupDao = database.groupDao(),
+            codec = codec
+        )
+    }
+
+    val preferencesRepository: PreferencesRepository by lazy {
+        PreferencesRepositoryImpl(database.preferencesDao())
+    }
+}

app/src/main/java/agzam/vyatsu/domain/ScheduleDates.kt

@@ -0,0 +1,39 @@
+package agzam.vyatsu.domain
+
+import agzam.vyatsu.domain.model.DateRange
+import agzam.vyatsu.domain.model.Season
+import java.time.LocalDate
+import java.time.ZoneId
+import java.time.format.DateTimeFormatter
+import java.time.temporal.ChronoUnit
+import java.time.temporal.TemporalAdjusters
+
+object ScheduleDates {
+    private val zone: ZoneId = ZoneId.of("Europe/Moscow")
+    private val format: DateTimeFormatter = DateTimeFormatter.ofPattern("ddMMyyyy")
+
+    fun moscowToday(): LocalDate = LocalDate.now(zone)
+
+    fun asDate(dateStr: String): LocalDate = LocalDate.parse(dateStr, format)
+
+    fun dayIndexes(firstDate: String, today: LocalDate = moscowToday()): Pair<Int, Int> {
+        val begin = asDate(firstDate)
+        val anchor = begin.with(TemporalAdjusters.previousOrSame(java.time.DayOfWeek.MONDAY))
+        val diff = ChronoUnit.DAYS.between(anchor, today)
+
+        var week = Math.floorMod(diff / 7, 2)
+        var day = Math.floorMod(diff, 7)
+
+        if (day == 6) {
+            day = (day + 1) % 7
+            week = (week + 1) % 2
+        }
+        return week to day
+    }
+
+    fun dateByIndexes(firstDate: String, week: Int, day: Int): LocalDate =
+        asDate(firstDate).plusDays((week * 7 + day).toLong())
+
+    fun currentSeason(today: LocalDate = moscowToday()): Season =
+        if (today.monthValue in 8..12) Season.AUTUMN else Season.SPRING
+}

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

@@ -0,0 +1,6 @@
+package agzam.vyatsu.domain.model
+
+data class DateRange(
+    val first: String,
+    val second: String
+)

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

@@ -0,0 +1,16 @@
+package agzam.vyatsu.domain.model
+
+import java.time.LocalDate
+
+/**
+ * День
+ * @author Agzam
+ */
+data class Day(
+
+    /** Дата, парсится из формата dd.mm.yy из PDF **/
+    val date: LocalDate,
+    /** Список пар **/
+    val intervals: List<TimeSlot>,
+
+)

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

@@ -0,0 +1,11 @@
+package agzam.vyatsu.domain.model
+
+/**
+ * Группа студентов ВятГУ.
+ * id — идентификатор группы из data-grp_period_id без последней цифры (как в PDF URL).
+ */
+data class Group(
+    val id: String,
+    val name: String,
+    val faculty: String
+)

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

@@ -0,0 +1,29 @@
+package agzam.vyatsu.domain.model
+
+/**
+ * Занятие
+ * @author Agzam
+ */
+data class Lesson(
+
+    /** Сырое значение из PDF **/
+    val raw: String,
+
+    /** Кабинет **/
+    val room: String? = null,
+
+    /** Группа, например ИВТб-3304-05-00 **/
+    val group: String? = null,
+    /** Подгруппа, например на физкультуре **/
+    val subgroup: String? = null,
+
+    /** Предмет **/
+    val subject: String? = null,
+
+    /** Тип, например лекция/практика **/
+    val type: LessonType = LessonType.OTHER,
+
+    /** Преподаватель **/
+    val teacher: String? = null,
+
+    )

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

@@ -0,0 +1,18 @@
+package agzam.vyatsu.domain.model
+
+enum class LessonType(val label: String) {
+
+    LECTURE("Лекция"),
+    PRACTICE("Практическое занятие"),
+    LABORATORY("Лабораторная работа"),
+    OTHER("Занятие");
+
+    companion object {
+        fun fromRaw(raw: String): LessonType = when (raw.trim()) {
+            "Лекция" -> LECTURE
+            "Практическое занятие" -> PRACTICE
+            "Лабораторная работа" -> LABORATORY
+            else -> OTHER
+        }
+    }
+}

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

@@ -0,0 +1,17 @@
+package agzam.vyatsu.domain.model
+
+/**
+ * Расписание группы, как правило содержит 2 недели
+ * @author Agzam
+ */
+data class Schedule(
+
+    val groupId: String,
+    val season: Season,
+
+    /** Может содержать более 7 дней */
+    val days: List<Day>
+
+) {
+
+}

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

@@ -0,0 +1,11 @@
+package agzam.vyatsu.domain.model
+
+enum class Season {
+    AUTUMN, SPRING;
+
+    val apiKey: String
+        get() = when (this) {
+            AUTUMN -> "1"
+            SPRING -> "2"
+        }
+}

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

@@ -0,0 +1,17 @@
+package agzam.vyatsu.domain.model
+
+import java.time.LocalTime
+
+/**
+ * Временной промежуток/пара (например 08:20-09:30 из PDF)
+ *
+ * Может содержать несколько [Lesson], например для разделения на подгруппы
+ * @author Agzam
+ */
+data class TimeSlot(
+
+    val start: LocalTime,
+    val end: LocalTime,
+    val lessons: List<Lesson>
+
+)

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

@@ -0,0 +1,12 @@
+package agzam.vyatsu.domain.repository
+
+import agzam.vyatsu.domain.model.Group
+import kotlinx.coroutines.flow.Flow
+
+interface GroupRepository {
+    fun observeGroups(): Flow<List<Group>>
+    suspend fun getGroups(): List<Group>
+    suspend fun getFaculties(): List<String>
+    suspend fun refreshIfStale(): Boolean
+    suspend fun forceRefresh(): Boolean
+}

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

@@ -0,0 +1,7 @@
+package agzam.vyatsu.domain.repository
+
+interface PreferencesRepository {
+    suspend fun selectedGroupId(): String?
+    suspend fun setSelectedGroup(groupId: String)
+    suspend fun clearSelectedGroup()
+}

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

@@ -0,0 +1,12 @@
+package agzam.vyatsu.domain.repository
+
+import agzam.vyatsu.domain.model.Schedule
+import kotlinx.coroutines.flow.Flow
+
+interface ScheduleRepository {
+    fun observeSchedule(groupId: String): Flow<Schedule?>
+    suspend fun getSchedule(groupId: String): Schedule?
+    suspend fun sync(groupId: String): Schedule?
+    suspend fun isStale(groupId: String): Boolean
+    suspend fun clear(groupId: String)
+}

app/src/main/java/agzam/vyatsu/ui/groups/GroupPickerScreen.kt

@@ -0,0 +1,152 @@
+package agzam.vyatsu.ui.groups
+
+import agzam.vyatsu.domain.model.Group
+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.Spacer
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.systemBars
+import androidx.compose.foundation.layout.windowInsetsPadding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Clear
+import androidx.compose.material.icons.filled.Refresh
+import androidx.compose.material.icons.filled.Search
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SearchBar
+import androidx.compose.material3.SearchBarDefaults
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+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.unit.dp
+
+/**
+ * Страница выбора группы
+ * @author Agzam
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun GroupPickerScreen(viewModel: GroupPickerViewModel, onGroupPicked: (Group) -> Unit) {
+    val state by viewModel.uiState.collectAsState()
+    var isSearchActive by remember { mutableStateOf(false) }
+
+    Scaffold { innerPadding ->
+        Column(
+            Modifier
+                .fillMaxSize()
+                .windowInsetsPadding(WindowInsets.systemBars)
+                .padding(innerPadding)
+                .padding(horizontal = 16.dp, vertical = 8.dp)
+        ) {
+            if (!isSearchActive) {
+                Row(
+                    Modifier
+                        .fillMaxWidth()
+                        .padding(bottom = 8.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        text = "Выберите группу",
+                        style = MaterialTheme.typography.headlineSmall,
+                        modifier = Modifier.weight(1f)
+                    )
+                    IconButton(onClick = { viewModel.refresh() }) {
+                        Icon(Icons.Default.Refresh, contentDescription = "Обновить")
+                    }
+                }
+            }
+
+            if (state.isLoading && state.groups.isEmpty()) {
+                Row(Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.Center) {
+                    CircularProgressIndicator()
+                }
+                return@Column
+            }
+            if (state.error != null && state.groups.isEmpty()) {
+                Column(Modifier.fillMaxWidth()) {
+                    Text(state.error.orEmpty(), style = MaterialTheme.typography.bodyMedium, color = MaterialTheme.colorScheme.error)
+                    TextButton(onClick = { viewModel.retry() }) { Text("Повторить") }
+                }
+                return@Column
+            }
+            SearchBar(
+                modifier = Modifier.fillMaxWidth(),
+                expanded = isSearchActive,
+                onExpandedChange = { isSearchActive = it },
+                inputField = {
+                    SearchBarDefaults.InputField(
+                        query = state.searchQuery,
+                        onQueryChange = { viewModel.search(it) },
+                        onSearch = { isSearchActive = false },
+                        expanded = isSearchActive,
+                        onExpandedChange = { isSearchActive = it },
+                        placeholder = { Text("Поиск группы") },
+                        leadingIcon = { Icon(Icons.Default.Search, contentDescription = null) },
+                        trailingIcon = {
+                            if (isSearchActive && state.searchQuery.isNotEmpty()) {
+                                IconButton(onClick = { viewModel.search("") }) {
+                                    Icon(Icons.Default.Clear, contentDescription = "Очистить")
+                                }
+                            }
+                        }
+                    )
+                }
+            ) {
+                GroupList(
+                    groups = state.filteredGroups,
+                    onPick = { group ->
+                        isSearchActive = false
+                        onGroupPicked(group)
+                    }
+                )
+            }
+
+            if (!isSearchActive) {
+                Spacer(modifier = Modifier.height(8.dp))
+                GroupList(state.filteredGroups, onGroupPicked)
+            }
+        }
+    }
+}
+
+@Composable
+private fun GroupList(groups: List<Group>, onPick: (Group) -> Unit) {
+    LazyColumn(modifier = Modifier.fillMaxSize()) {
+        items(groups) { group ->
+            Column(modifier = Modifier.fillMaxWidth() .clickable { onPick(group) }) {
+                Box(
+                    modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp, vertical = 8.dp).padding(horizontal = 16.dp),
+                    contentAlignment = Alignment.CenterStart
+                ) {
+                    Text(group.name, style = MaterialTheme.typography.bodyMedium)
+                    // XXX: стоит ли добавлять факультет или это засорит интерфейс
+                    // Row(modifier = Modifier.fillMaxWidth(), verticalAlignment = Alignment.Bottom) {
+                    // if (group.faculty.isNotEmpty()) Text(text = group.faculty + " · ", color = MaterialTheme.colorScheme.onSurfaceVariant)
+                    // }
+                }
+            }
+            HorizontalDivider(thickness = 1.dp, color = MaterialTheme.colorScheme.outlineVariant)
+        }
+    }
+}

app/src/main/java/agzam/vyatsu/ui/groups/GroupPickerViewModel.kt

@@ -0,0 +1,100 @@
+package agzam.vyatsu.ui.groups
+
+import agzam.vyatsu.domain.model.Group
+import agzam.vyatsu.domain.repository.GroupRepository
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+/**
+ * @author Agzam
+ */
+class GroupPickerViewModel(private val repository: GroupRepository) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(GroupPickerUiState())
+    val uiState: StateFlow<GroupPickerUiState> = _uiState.asStateFlow()
+
+    init {
+        load()
+    }
+
+    private fun load() {
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                val ok = try {
+                    repository.refreshIfStale()
+                } catch (e: Exception) {
+                    _uiState.value = _uiState.value.copy(
+                        error = e.message ?: "Не удалось загрузить группы"
+                    )
+                    false
+                }
+                if (!ok && _uiState.value.groups.isEmpty()) {
+                    _uiState.value = _uiState.value.copy(
+                        error = _uiState.value.error ?: "Не удалось обновить список групп"
+                    )
+                }
+            }
+            repository.observeGroups().collect { groups ->
+                val query = _uiState.value.searchQuery
+                _uiState.value = _uiState.value.copy(
+                    isLoading = false,
+                    groups = groups,
+                    filteredGroups = filterGroups(groups, query),
+                    error = null
+                )
+            }
+        }
+    }
+
+    fun search(query: String) {
+        val groups = _uiState.value.groups
+        _uiState.value = _uiState.value.copy(
+            searchQuery = query,
+            filteredGroups = filterGroups(groups, query)
+        )
+    }
+
+    private fun filterGroups(groups: List<Group>, query: String): List<Group> {
+        if (query.isBlank()) return groups
+        val lowerQuery = query.lowercase()
+        return groups.filter { group ->
+            group.name.lowercase().contains(lowerQuery) || group.faculty.lowercase().contains(lowerQuery)
+        }
+    }
+
+    fun retry() {
+        _uiState.value = _uiState.value.copy(isLoading = true, error = null)
+        load()
+    }
+
+    fun refresh() {
+        _uiState.value = _uiState.value.copy(isLoading = true, error = null)
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                try {
+                    repository.forceRefresh()
+                } catch (e: Exception) {
+                    _uiState.value = _uiState.value.copy(
+                        isLoading = false,
+                        error = e.message ?: "Не удалось обновить список групп"
+                    )
+                    return@withContext
+                }
+            }
+        }
+    }
+}
+
+data class GroupPickerUiState(
+    val isLoading: Boolean = true,
+    val error: String? = null,
+    val groups: List<Group> = emptyList(),
+    val searchQuery: String = "",
+    val filteredGroups: List<Group> = emptyList()
+)

app/src/main/java/agzam/vyatsu/ui/home/HomeScreen.kt

@@ -0,0 +1,73 @@
+package agzam.vyatsu.ui.home
+
+import agzam.vyatsu.ui.info.BuildingsScreen
+import agzam.vyatsu.ui.info.CallsScreen
+import agzam.vyatsu.ui.schedule.ScheduleScreen
+import agzam.vyatsu.ui.schedule.ScheduleViewModel
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.DateRange
+import androidx.compose.material.icons.filled.Home
+import androidx.compose.material.icons.filled.Info
+import androidx.compose.material3.Icon
+import androidx.compose.material3.NavigationBar
+import androidx.compose.material3.NavigationBarItem
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+
+private enum class HomeTab(val label: String) {
+    SCHEDULE("Расписание"),
+    CALLS("Звонки"),
+    BUILDINGS("Корпуса")
+}
+
+@Composable
+fun HomeScreen(
+    scheduleViewModel: ScheduleViewModel,
+    onSwitchGroup: () -> Unit
+) {
+    var tab by rememberSaveable { mutableStateOf(HomeTab.SCHEDULE) }
+
+    Scaffold(
+        bottomBar = {
+            NavigationBar {
+                HomeTab.entries.forEach { t ->
+                    NavigationBarItem(
+                        selected = tab == t,
+                        onClick = { tab = t },
+                        icon = {
+                            Icon(
+                                imageVector = when (t) {
+                                    HomeTab.SCHEDULE -> Icons.Default.DateRange
+                                    HomeTab.CALLS -> Icons.Default.Info
+                                    HomeTab.BUILDINGS -> Icons.Default.Home
+                                },
+                                contentDescription = t.label
+                            )
+                        },
+                        label = { Text(t.label) }
+                    )
+                }
+            }
+        }
+    ) { innerPadding ->
+        androidx.compose.foundation.layout.Box(
+            Modifier
+                .fillMaxSize()
+                .padding(innerPadding)
+        ) {
+            when (tab) {
+                HomeTab.SCHEDULE -> ScheduleScreen(viewModel = scheduleViewModel, onSwitchGroup = onSwitchGroup)
+                HomeTab.CALLS -> CallsScreen()
+                HomeTab.BUILDINGS -> BuildingsScreen()
+            }
+        }
+    }
+}

app/src/main/java/agzam/vyatsu/ui/info/BuildingsScreen.kt

@@ -0,0 +1,70 @@
+package agzam.vyatsu.ui.info
+
+import agzam.vyatsu.data.static.BUILDINGS
+import android.content.Intent
+import android.net.Uri
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBars
+import androidx.compose.foundation.layout.windowInsetsPadding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import agzam.vyatsu.BuildConfig
+
+@Composable
+fun BuildingsScreen() {
+    val context = LocalContext.current
+    LazyColumn(
+        Modifier
+            .fillMaxWidth()
+            .windowInsetsPadding(WindowInsets.statusBars)
+    ) {
+        items(BUILDINGS) { b ->
+            Column(
+                Modifier
+                    .fillMaxWidth()
+                    .clickable {
+                        val uri = Uri.parse("geo:${b.latitude},${b.longitude}?q=${b.latitude},${b.longitude}(Корпус ${b.number})")
+                        context.startActivity(Intent(Intent.ACTION_VIEW, uri))
+                    }
+                    .padding(horizontal = 16.dp, vertical = 12.dp)
+            ) {
+                Text(
+                    "Корпус ${b.number}",
+                    style = MaterialTheme.typography.bodyLarge
+                )
+                Text(
+                    b.address,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            }
+            HorizontalDivider(Modifier.padding(horizontal = 16.dp))
+        }
+
+        item {
+            Spacer(Modifier.height(24.dp))
+            Text(
+                "Версия ${BuildConfig.VERSION_NAME}",
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                textAlign = TextAlign.Center,
+                modifier = Modifier.fillMaxWidth()
+            )
+            Spacer(Modifier.height(16.dp))
+        }
+    }
+}

app/src/main/java/agzam/vyatsu/ui/info/CallsScreen.kt

@@ -0,0 +1,42 @@
+package agzam.vyatsu.ui.info
+
+import agzam.vyatsu.data.static.CALLS
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBars
+import androidx.compose.foundation.layout.windowInsetsPadding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+
+@Composable
+fun CallsScreen() {
+    LazyColumn(
+        Modifier
+            .fillMaxWidth()
+            .windowInsetsPadding(WindowInsets.statusBars)
+    ) {
+        itemsIndexed(CALLS) { index, call ->
+            Row(Modifier.fillMaxWidth().padding(horizontal = 16.dp, vertical = 12.dp)) {
+                Text(
+                    "${index + 1} пара",
+                    style = MaterialTheme.typography.bodyLarge,
+                    modifier = Modifier.weight(1f)
+                )
+                Text(
+                    "${call.start} – ${call.end}",
+                    style = MaterialTheme.typography.bodyLarge,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            }
+            HorizontalDivider(Modifier.padding(horizontal = 16.dp))
+        }
+    }
+}

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

@@ -0,0 +1,218 @@
+package agzam.vyatsu.ui.schedule
+
+import agzam.vyatsu.domain.model.Day
+import agzam.vyatsu.domain.model.TimeSlot
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+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.systemBars
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.LazyRow
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Refresh
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.FilterChipDefaults
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import java.time.DayOfWeek
+import java.time.format.DateTimeFormatter
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun ScheduleScreen(viewModel: ScheduleViewModel, onSwitchGroup: () -> Unit) {
+    val state by viewModel.uiState.collectAsState()
+
+    Column(Modifier.fillMaxSize()) {
+        TopAppBar(
+            title = { Text("Расписание") },
+            actions = {
+                TextButton(onClick = { onSwitchGroup() }) {
+                    Text("Сменить группу")
+                }
+                IconButton(onClick = { viewModel.refresh() }) {
+                    Icon(Icons.Default.Refresh, contentDescription = "Обновить")
+                }
+            },
+            windowInsets = WindowInsets.systemBars.only(androidx.compose.foundation.layout.WindowInsetsSides.Top)
+        )
+        Column(Modifier.fillMaxSize().padding(horizontal =  16.dp, vertical = 0.dp)) {
+            when {
+                state.isSyncing && state.schedule == null -> {
+                    Row(
+                        Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.Center
+                    ) {
+                        CircularProgressIndicator()
+                    }
+                }
+
+                state.schedule == null -> {
+                    Column(
+                        Modifier.fillMaxWidth(),
+                        horizontalAlignment = Alignment.CenterHorizontally
+                    ) {
+                        Text(
+                            "Не удалось загрузить расписание",
+                            style = MaterialTheme.typography.bodyLarge
+                        )
+                        TextButton(onClick = { viewModel.refresh() }) {
+                            Text("Повторить")
+                        }
+                    }
+                }
+
+                else -> {
+                    val schedule = state.schedule!!
+                    val day = schedule.days.getOrNull(state.selectedIndex)
+                    if (day == null) {
+                        Text("Занятий нет", style = MaterialTheme.typography.bodyLarge)
+                    } else {
+                        val isToday = state.selectedIndex == state.todayIndex
+                        val dayLabel = if (isToday) "Сегодня " else ""
+
+                        Text(
+                            "$dayLabel ${dayName(day.date.dayOfWeek)} · ${day.date.format(FULL_DATE)}",
+                            style = MaterialTheme.typography.titleMedium
+                        )
+                        HorizontalDivider(Modifier.padding(vertical = 8.dp))
+
+                        DayChips(
+                            days = schedule.days,
+                            selectedIndex = state.selectedIndex,
+                            todayIndex = state.todayIndex,
+                            onSelect = viewModel::selectDay
+                        )
+
+                        HorizontalDivider(Modifier.padding(vertical = 8.dp))
+
+                        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)
+                            ) {
+                                itemsIndexed(day.intervals) { slotIndex, slot ->
+                                    LessonSlot(slotIndex = slotIndex, slot = slot)
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun DayChips(
+    days: List<Day>,
+    selectedIndex: Int,
+    todayIndex: Int,
+    onSelect: (Int) -> Unit
+) {
+    LazyRow(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+        itemsIndexed(days) { index, day ->
+            val selected = selectedIndex == index
+            val isTodayChip = todayIndex == index
+            FilterChip(
+                selected = selected,
+                onClick = { onSelect(index) },
+                label = {
+                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                        Text(
+                            dayName(day.date.dayOfWeek),
+                            style = MaterialTheme.typography.labelMedium
+                        )
+                        Text(
+                            day.date.format(CHIP_DATE),
+                            style = MaterialTheme.typography.labelSmall,
+                            color = if (selected) {
+                                MaterialTheme.colorScheme.onSecondaryContainer
+                            } else {
+                                MaterialTheme.colorScheme.onSurfaceVariant
+                            }
+                        )
+                    }
+                },
+                modifier = Modifier.padding(vertical = 2.dp),
+                border = if (isTodayChip && !selected) {
+                    FilterChipDefaults.filterChipBorder(
+                        borderColor = MaterialTheme.colorScheme.primary,
+                        borderWidth = 1.dp,
+                        enabled = true,
+                        selected = false
+                    )
+                } else {
+                    FilterChipDefaults.filterChipBorder(enabled = true, selected = selected)
+                },
+                shape = RoundedCornerShape(8.dp)
+            )
+        }
+    }
+}
+
+@Composable
+private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
+    Column(Modifier.fillMaxWidth()) {
+        Text(
+            "${slotIndex + 1} пара · ${slot.start.format(TIME)}–${slot.end.format(TIME)}",
+            style = MaterialTheme.typography.labelMedium,
+            color = MaterialTheme.colorScheme.primary
+        )
+        if (slot.lessons.isEmpty()) {
+            Text("—", style = MaterialTheme.typography.bodyMedium)
+        } 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
+                    )
+                }
+            }
+        }
+    }
+}
+
+private fun dayName(dayOfWeek: DayOfWeek): String = when (dayOfWeek) {
+    DayOfWeek.MONDAY -> "Пн"
+    DayOfWeek.TUESDAY -> "Вт"
+    DayOfWeek.WEDNESDAY -> "Ср"
+    DayOfWeek.THURSDAY -> "Чт"
+    DayOfWeek.FRIDAY -> "Пт"
+    DayOfWeek.SATURDAY -> "Сб"
+    DayOfWeek.SUNDAY -> "Вс"
+}
+
+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")

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

@@ -0,0 +1,113 @@
+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.PreferencesRepository
+import agzam.vyatsu.domain.repository.ScheduleRepository
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+
+class ScheduleViewModel(
+    private val scheduleRepository: ScheduleRepository,
+    private val preferencesRepository: PreferencesRepository
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(ScheduleUiState())
+    val uiState: StateFlow<ScheduleUiState> = _uiState.asStateFlow()
+
+    private var currentGroupId: String? = null
+
+    init {
+        viewModelScope.launch {
+            val groupId = preferencesRepository.selectedGroupId()
+            if (groupId != null) {
+                selectGroup(groupId)
+            } else {
+                _uiState.value = _uiState.value.copy(noGroup = true)
+            }
+        }
+    }
+
+    fun selectGroup(groupId: String) {
+        currentGroupId = groupId
+        viewModelScope.launch {
+            preferencesRepository.setSelectedGroup(groupId)
+            _uiState.value = _uiState.value.copy(noGroup = false)
+
+            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
+                        )
+                    }
+                }
+            }
+
+            launch {
+                _uiState.value = _uiState.value.copy(isSyncing = true)
+                scheduleRepository.sync(groupId)
+                _uiState.value = _uiState.value.copy(isSyncing = false)
+            }
+        }
+    }
+
+    fun switchGroup() {
+        viewModelScope.launch {
+            currentGroupId = null
+            preferencesRepository.clearSelectedGroup()
+            _uiState.value = _uiState.value.copy(noGroup = true)
+        }
+    }
+
+    fun refresh() {
+        val groupId = currentGroupId ?: return
+        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
+            )
+        }
+    }
+
+    fun selectDay(index: Int) {
+        val days = _uiState.value.schedule?.days.orEmpty()
+        if (index !in days.indices) return
+        _uiState.value = _uiState.value.copy(selectedIndex = index)
+    }
+
+    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 schedule: Schedule? = null,
+    val todayIndex: Int = 0,
+    val selectedIndex: Int = 0
+)

app/src/main/java/agzam/vyatsu/ui/theme/Color.kt

@@ -0,0 +1,11 @@
+package agzam.vyatsu.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650a4)
+val PurpleGrey40 = Color(0xFF625b71)
+val Pink40 = Color(0xFF7D5260)

app/src/main/java/agzam/vyatsu/ui/theme/Theme.kt

@@ -0,0 +1,58 @@
+package agzam.vyatsu.ui.theme
+
+import android.app.Activity
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+
+private val DarkColorScheme = darkColorScheme(
+    primary = Purple80,
+    secondary = PurpleGrey80,
+    tertiary = Pink80
+)
+
+private val LightColorScheme = lightColorScheme(
+    primary = Purple40,
+    secondary = PurpleGrey40,
+    tertiary = Pink40
+
+    /* Other default colors to override
+    background = Color(0xFFFFFBFE),
+    surface = Color(0xFFFFFBFE),
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onTertiary = Color.White,
+    onBackground = Color(0xFF1C1B1F),
+    onSurface = Color(0xFF1C1B1F),
+    */
+)
+
+@Composable
+fun VyatsuScheduleTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    // Dynamic color is available on Android 12+
+    dynamicColor: Boolean = true,
+    content: @Composable () -> Unit
+) {
+    val colorScheme = when {
+        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+            val context = LocalContext.current
+            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        }
+
+        darkTheme -> DarkColorScheme
+        else -> LightColorScheme
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content
+    )
+}

app/src/main/java/agzam/vyatsu/ui/theme/Type.kt

@@ -0,0 +1,34 @@
+package agzam.vyatsu.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+    bodyLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 16.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.5.sp
+    )
+    /* Other default text styles to override
+    titleLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 11.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    )
+    */
+)

app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

app/src/main/res/mipmap-anydpi/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/mipmap-anydpi/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/values/colors.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">VyatsuSchedule</string>
+</resources>

app/src/main/res/values/themes.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.VyatsuSchedule" parent="android:Theme.Material.Light.NoActionBar" />
+</resources>

app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older than API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

app/src/test/java/agzam/vyatsu/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package agzam.vyatsu
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}

build.gradle.kts

@@ -0,0 +1,5 @@
+plugins {
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.kotlin.compose) apply false
+    alias(libs.plugins.kotlin.ksp) apply false
+}

gradle.properties

@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. For more details, visit
+# https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
+# org.gradle.parallel=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+
+# AGP 9 built-in Kotlin: allow KSP (Room/Moshi) to register generated source sets
+android.disallowKotlinSourceSets=false
+
+systemProp.sun.net.client.defaultConnectTimeout=5000
+systemProp.sun.net.client.defaultReadTimeout=5000

gradle/gradle-daemon-jvm.properties

@@ -0,0 +1,12 @@
+#This file is generated by updateDaemonJvm
+toolchainUrl.FREE_BSD.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.FREE_BSD.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.LINUX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.LINUX.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.MAC_OS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/73bcfb608d1fde9fb62e462f834a3299/redirect
+toolchainUrl.MAC_OS.X86_64=https\://api.foojay.io/disco/v3.0/ids/846ee0d876d26a26f37aa1ce8de73224/redirect
+toolchainUrl.UNIX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.UNIX.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.WINDOWS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/9482ddec596298c84656d31d16652665/redirect
+toolchainUrl.WINDOWS.X86_64=https\://api.foojay.io/disco/v3.0/ids/39701d92e1756bb2f141eb67cd4c660e/redirect
+toolchainVersion=21

gradle/libs.versions.toml

@@ -0,0 +1,66 @@
+[versions]
+agp = "9.1.1"
+coreKtx = "1.10.1"
+junit = "4.13.2"
+junitVersion = "1.1.5"
+espressoCore = "3.5.1"
+lifecycleRuntimeKtx = "2.6.1"
+activityCompose = "1.8.0"
+kotlin = "2.2.10"
+composeBom = "2026.02.01"
+ksp = "2.2.10-2.0.2"
+room = "2.8.4"
+okhttp = "4.12.0"
+jsoup = "1.23.2"
+moshi = "1.15.2"
+pdfbox = "2.0.27.0"
+coroutines = "1.8.1"
+navigationCompose = "2.8.0"
+monitor = "1.8.0"
+
+[libraries]
+androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
+androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
+androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
+androidx-compose-ui = { group = "androidx.compose.ui", name = "ui" }
+androidx-compose-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
+androidx-compose-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
+androidx-compose-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
+androidx-compose-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
+androidx-compose-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
+androidx-compose-material3 = { group = "androidx.compose.material3", name = "material3" }
+androidx-compose-material-icons-core = { group = "androidx.compose.material", name = "material-icons-core" }
+androidx-navigation-compose = { group = "androidx.navigation", name = "navigation-compose", version.ref = "navigationCompose" }
+androidx-lifecycle-viewmodel-compose = { group = "androidx.lifecycle", name = "lifecycle-viewmodel-compose", version.ref = "lifecycleRuntimeKtx" }
+androidx-lifecycle-runtime-compose = { group = "androidx.lifecycle", name = "lifecycle-runtime-compose", version.ref = "lifecycleRuntimeKtx" }
+kotlinx-coroutines-android = { group = "org.jetbrains.kotlinx", name = "kotlinx-coroutines-android", version.ref = "coroutines" }
+
+# Room
+androidx-room-runtime = { group = "androidx.room", name = "room-runtime", version.ref = "room" }
+androidx-room-ktx = { group = "androidx.room", name = "room-ktx", version.ref = "room" }
+androidx-room-compiler = { group = "androidx.room", name = "room-compiler", version.ref = "room" }
+
+# Networking
+okhttp = { group = "com.squareup.okhttp3", name = "okhttp", version.ref = "okhttp" }
+okhttp-logging = { group = "com.squareup.okhttp3", name = "logging-interceptor", version.ref = "okhttp" }
+
+# HTML parsing
+jsoup = { group = "org.jsoup", name = "jsoup", version.ref = "jsoup" }
+
+# JSON
+moshi = { group = "com.squareup.moshi", name = "moshi", version.ref = "moshi" }
+moshi-kotlin = { group = "com.squareup.moshi", name = "moshi-kotlin", version.ref = "moshi" }
+moshi-kotlin-codegen = { group = "com.squareup.moshi", name = "moshi-kotlin-codegen", version.ref = "moshi" }
+
+# PDF
+pdfbox-android = { group = "com.tom-roush", name = "pdfbox-android", version.ref = "pdfbox" }
+androidx-monitor = { group = "androidx.test", name = "monitor", version.ref = "monitor" }
+
+[plugins]
+android-application = { id = "com.android.application", version.ref = "agp" }
+kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
+kotlin-ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,9 @@
+#Mon Aug 31 18:35:43 MSK 2026
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionSha256Sum=b266d5ff6b90eada6dc3b20cb090e3731302e553a27c5d3e4df1f0d76beaff06
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

@@ -0,0 +1,26 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
+        mavenCentral()
+    }
+}
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "VyatsuSchedule"
+include(":app")