From 3da65a33276be5f8113c04a415ffa4c93ca9d62f Mon Sep 17 00:00:00 2001
From: n08i40k <nhomcencko1@gmail.com>
Date: Tue, 8 Oct 2024 16:13:35 +0400
Subject: [PATCH] 1.7.0
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Отображение текущей пары в уведомлении.

Мне на данный момент невероятно сложно написать код для запуска сервиса перед началом пар (мне лень), поэтому сервис будет запускаться каждые 7 утра с задежкой до 15 минут.
---
 .idea/inspectionProfiles/Project_Default.xml  |   4 +
 .idea/runConfigurations.xml                   |  13 +
 app/build.gradle.kts                          |   5 +-
 app/src/main/AndroidManifest.xml              |  11 +
 .../polytechnic/next/NotificationChannels.kt  |   1 +
 .../next/PolytechnicApplication.kt            |  10 +
 .../ru/n08i40k/polytechnic/next/model/Day.kt  |  64 ++++-
 .../n08i40k/polytechnic/next/model/Group.kt   |  22 +-
 .../n08i40k/polytechnic/next/model/Lesson.kt  |  41 +++-
 .../polytechnic/next/model/LessonTime.kt      |   5 +-
 .../next/service/CurrentLessonViewService.kt  | 222 ++++++++++++++++++
 .../service/MyFirebaseMessagingService.kt     |   1 +
 .../polytechnic/next/ui/MainActivity.kt       |  45 +++-
 .../next/ui/main/schedule/DayCard.kt          |   4 +-
 .../next/ui/main/schedule/LessonView.kt       |  54 ++---
 .../polytechnic/next/utils/Extensions.kt      |  21 ++
 .../polytechnic/next/work/LinkUpdateWorker.kt |   4 +
 .../polytechnic/next/work/StartClvService.kt  |  41 ++++
 app/src/main/res/values-ru/strings.xml        |  14 ++
 app/src/main/res/values/strings.xml           |  14 ++
 20 files changed, 544 insertions(+), 52 deletions(-)
 create mode 100644 .idea/runConfigurations.xml
 create mode 100644 app/src/main/java/ru/n08i40k/polytechnic/next/service/CurrentLessonViewService.kt
 create mode 100644 app/src/main/java/ru/n08i40k/polytechnic/next/work/StartClvService.kt

diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
index 6806f5a..cde3e19 100644
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -37,6 +37,10 @@
       <option name="composableFile" value="true" />
       <option name="previewFile" value="true" />
     </inspection_tool>
+    <inspection_tool class="PreviewDeviceShouldUseNewSpec" enabled="true" level="WEAK WARNING" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
     <inspection_tool class="PreviewFontScaleMustBeGreaterThanZero" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
       <option name="previewFile" value="true" />
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
new file mode 100644
index 0000000..931b96c
--- /dev/null
+++ b/.idea/runConfigurations.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.intellij.execution.junit.AbstractAllInDirectoryConfigurationProducer" />
+        <option value="com.intellij.execution.junit.AllInPackageConfigurationProducer" />
+        <option value="com.intellij.execution.junit.TestInClassConfigurationProducer" />
+        <option value="com.intellij.execution.junit.UniqueIdConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index c83eb85..3ad9729 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -8,6 +8,7 @@ plugins {
     alias(libs.plugins.compose.compiler)
 
     kotlin("plugin.serialization") version "2.0.20"
+    id("kotlin-parcelize")
 
     id("com.google.devtools.ksp")
 
@@ -32,8 +33,8 @@ android {
         applicationId = "ru.n08i40k.polytechnic.next"
         minSdk = 26
         targetSdk = 35
-        versionCode = 11
-        versionName = "1.6.0"
+        versionCode = 12
+        versionName = "1.7.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index a274b7a..7b38436 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -4,6 +4,8 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
 
     <application
         android:name=".PolytechnicApplication"
@@ -24,6 +26,15 @@
             </intent-filter>
         </service>
 
+        <service
+            android:name=".service.CurrentLessonViewService"
+            android:exported="false"
+            android:foregroundServiceType="specialUse">
+            <property
+                android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE"
+                android:value="Service for viewing current lesson in notification." />
+        </service>
+
         <activity
             android:name=".ui.MainActivity"
             android:exported="true"
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/NotificationChannels.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/NotificationChannels.kt
index 03a8259..9cf4077 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/NotificationChannels.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/NotificationChannels.kt
@@ -1,6 +1,7 @@
 package ru.n08i40k.polytechnic.next
 
 object NotificationChannels {
+    const val LESSON_VIEW = "lesson-view"
     const val SCHEDULE_UPDATE = "schedule-update"
     const val APP_UPDATE = "app-update"
 }
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/PolytechnicApplication.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/PolytechnicApplication.kt
index 98372e5..e255faa 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/PolytechnicApplication.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/PolytechnicApplication.kt
@@ -1,6 +1,10 @@
 package ru.n08i40k.polytechnic.next
 
+import android.Manifest
 import android.app.Application
+import android.content.pm.PackageManager
+import android.os.Build
+import androidx.core.content.ContextCompat
 import dagger.hilt.android.HiltAndroidApp
 import ru.n08i40k.polytechnic.next.data.AppContainer
 import ru.n08i40k.polytechnic.next.utils.or
@@ -17,4 +21,10 @@ class PolytechnicApplication : Application() {
             .getPackageInfo(this.packageName, 0)
             .versionName or "1.0.0"
     }
+
+    fun hasNotificationPermission(): Boolean {
+        return (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU
+                || ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS)
+                == PackageManager.PERMISSION_GRANTED)
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/model/Day.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/model/Day.kt
index 9b32e4a..2a540be 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/model/Day.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/model/Day.kt
@@ -1,7 +1,11 @@
 package ru.n08i40k.polytechnic.next.model
 
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
 import kotlinx.serialization.Serializable
+import java.util.Calendar
 
+@Parcelize
 @Suppress("unused")
 @Serializable
 class Day(
@@ -10,4 +14,62 @@ class Day(
     val defaultIndices: ArrayList<Int>,
     val customIndices: ArrayList<Int>,
     val lessons: ArrayList<Lesson?>
-)
\ No newline at end of file
+) : Parcelable {
+    fun getDistanceToNextByMinutes(from: Int): Map.Entry<Int, Int>? {
+        val toIdx = lessons
+            .map { if (it?.time == null) null else it.time.start }
+            .indexOfFirst { if (it == null) false else it > from }
+
+        if (toIdx == -1)
+            return null
+
+        return object : Map.Entry<Int, Int> {
+            override val key: Int
+                get() = toIdx
+            override val value: Int
+                get() = lessons[toIdx]!!.time!!.start - from
+        }
+    }
+
+    fun getDistanceToNextByIdx(from: Int? = null): Map.Entry<Int, Int>? {
+        val fromLesson = if (from != null) lessons[from] else null
+
+        if (from != null && fromLesson?.time == null)
+            throw NullPointerException("Lesson (by given index) and it's time should be non-null!")
+
+        val fromTime =
+            if (from != null)
+                fromLesson!!.time!!.end
+            else
+                Calendar.getInstance()
+                    .get(Calendar.HOUR_OF_DAY) * 60 + Calendar.getInstance()
+                    .get(Calendar.MINUTE)
+
+        return getDistanceToNextByMinutes(fromTime)
+    }
+
+    fun getCurrentLesson(): Map.Entry<Int, Lesson>? {
+        val minutes = Calendar.getInstance()
+            .get(Calendar.HOUR_OF_DAY) * 60 + Calendar.getInstance()
+            .get(Calendar.MINUTE)
+
+        for (lessonIdx in 0..<lessons.size) {
+            val lesson = lessons[lessonIdx] ?: continue
+
+            if (lesson.time == null
+                || minutes < lesson.time.start
+                || minutes >= lesson.time.end
+            )
+                continue
+
+            return object : Map.Entry<Int, Lesson> {
+                override val key: Int
+                    get() = lessonIdx
+                override val value: Lesson
+                    get() = lesson
+            }
+        }
+
+        return null
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/model/Group.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/model/Group.kt
index 71542de..2ba4aa0 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/model/Group.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/model/Group.kt
@@ -1,9 +1,27 @@
 package ru.n08i40k.polytechnic.next.model
 
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
 import kotlinx.serialization.Serializable
+import java.util.Calendar
 
+@Parcelize
 @Serializable
-class Group(
+data class Group(
     val name: String,
     val days: ArrayList<Day?>
-)
\ No newline at end of file
+) : Parcelable {
+    fun getCurrentDay(): Map.Entry<Int, Day?>? {
+        val currentDay = (Calendar.getInstance().get(Calendar.DAY_OF_WEEK) - 2)
+
+        if (currentDay < 0 || currentDay > days.size - 1)
+            return null
+
+        return object : Map.Entry<Int, Day?> {
+            override val key: Int
+                get() = currentDay
+            override val value: Day?
+                get() = days[currentDay]
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/model/Lesson.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/model/Lesson.kt
index e942679..6ff32e5 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/model/Lesson.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/model/Lesson.kt
@@ -1,7 +1,13 @@
 package ru.n08i40k.polytechnic.next.model
 
+import android.content.Context
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
 import kotlinx.serialization.Serializable
+import ru.n08i40k.polytechnic.next.R
+import ru.n08i40k.polytechnic.next.utils.limit
 
+@Parcelize
 @Serializable
 data class Lesson(
     val type: LessonType,
@@ -10,4 +16,37 @@ data class Lesson(
     val time: LessonTime?,
     val cabinets: ArrayList<String>,
     val teacherNames: ArrayList<String>
-)
\ No newline at end of file
+) : Parcelable {
+    fun getDuration(): Int? {
+        if (this.time == null)
+            return null
+
+        return time.end - time.start
+    }
+
+    fun getNameAndCabinetsShort(context: Context): String {
+        val limitedName = name limit 15
+
+
+        if (cabinets.isEmpty())
+            return limitedName
+
+        if (cabinets.size == 1 && cabinets[0] == "с/з")
+            return buildString {
+                append(limitedName)
+                append(" ")
+                append(context.getString(R.string.in_gym_lc))
+            }
+
+        return buildString {
+            append(limitedName)
+            append(" ")
+            append(
+                context.getString(
+                    R.string.in_cabinets_short_lc,
+                    cabinets.joinToString(", ")
+                )
+            )
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/model/LessonTime.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/model/LessonTime.kt
index 0dcb84b..e3513b5 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/model/LessonTime.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/model/LessonTime.kt
@@ -1,6 +1,9 @@
 package ru.n08i40k.polytechnic.next.model
 
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
 import kotlinx.serialization.Serializable
 
+@Parcelize
 @Serializable
-data class LessonTime(val start: Int, val end: Int)
\ No newline at end of file
+data class LessonTime(val start: Int, val end: Int) : Parcelable
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/service/CurrentLessonViewService.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/service/CurrentLessonViewService.kt
new file mode 100644
index 0000000..e722e84
--- /dev/null
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/service/CurrentLessonViewService.kt
@@ -0,0 +1,222 @@
+package ru.n08i40k.polytechnic.next.service
+
+import android.app.Notification
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.os.Handler
+import android.os.IBinder
+import android.os.Looper
+import androidx.core.app.NotificationCompat
+import androidx.work.OneTimeWorkRequestBuilder
+import androidx.work.WorkManager
+import ru.n08i40k.polytechnic.next.NotificationChannels
+import ru.n08i40k.polytechnic.next.PolytechnicApplication
+import ru.n08i40k.polytechnic.next.R
+import ru.n08i40k.polytechnic.next.model.Day
+import ru.n08i40k.polytechnic.next.model.Group
+import ru.n08i40k.polytechnic.next.model.Lesson
+import ru.n08i40k.polytechnic.next.utils.fmtAsClock
+import ru.n08i40k.polytechnic.next.work.StartClvService
+import java.util.Calendar
+
+class CurrentLessonViewService : Service() {
+    companion object {
+        private const val NOTIFICATION_STATUS_ID = 1337
+        private const val NOTIFICATION_END_ID = NOTIFICATION_STATUS_ID + 1
+        private const val UPDATE_INTERVAL = 60_000L
+
+        fun startService(appContext: Context) {
+            if (!(appContext as PolytechnicApplication).hasNotificationPermission())
+                return
+
+            if (Calendar.getInstance()
+                    .get(Calendar.HOUR_OF_DAY) * 60 + Calendar.getInstance()
+                    .get(Calendar.MINUTE) < 420)
+                return
+
+            val request = OneTimeWorkRequestBuilder<StartClvService>()
+                .build()
+
+            WorkManager.getInstance(appContext).enqueue(request)
+        }
+    }
+
+    private var day: Day? = null
+
+    private val handler = Handler(Looper.getMainLooper())
+    private val updateRunnable = object : Runnable {
+        override fun run() {
+            if (day == null || day!!.nonNullIndices.isEmpty()) {
+                stopSelf()
+                return
+            }
+
+            val currentMinutes = Calendar.getInstance()
+                .get(Calendar.HOUR_OF_DAY) * 60 + Calendar.getInstance()
+                .get(Calendar.MINUTE)
+
+            val currentLessonEntry = day!!.getCurrentLesson()
+            val currentLessonIdx: Int? = currentLessonEntry?.key
+            val currentLesson: Lesson? = currentLessonEntry?.value
+
+            val nextLessonEntry = day!!.getDistanceToNextByIdx(currentLessonIdx)
+            val nextLesson =
+                if (nextLessonEntry == null)
+                    null
+                else
+                    day!!.lessons[nextLessonEntry.key]
+
+            if (currentLesson == null && nextLesson == null) {
+                val notification = NotificationCompat
+                    .Builder(applicationContext, NotificationChannels.LESSON_VIEW)
+                    .setSmallIcon(R.drawable.logo)
+                    .setPriority(NotificationCompat.PRIORITY_HIGH)
+                    .setContentTitle(getString(R.string.lessons_end_notification_title))
+                    .setContentText(getString(R.string.lessons_end_notification_description))
+                    .build()
+                getNotificationManager().notify(NOTIFICATION_END_ID, notification)
+
+                stopSelf()
+                return
+            }
+
+            val firstLessonIdx = day!!.getDistanceToNextByMinutes(0)?.key
+                ?: throw NullPointerException("Is this even real?")
+            val distanceToFirst = day!!.lessons[firstLessonIdx]!!.time!!.start - currentMinutes
+
+            val currentLessonDelay =
+                if (currentLesson == null) // Если эта пара - перемена, то конец перемены через (результат getDistanceToNext)
+                    nextLessonEntry!!.value
+                else // Если эта пара - обычная пара, то конец пары через (конец этой пары - текущее кол-во минут)
+                    currentLesson.time!!.end - currentMinutes
+
+            val currentLessonName =
+                currentLesson?.getNameAndCabinetsShort(this@CurrentLessonViewService)
+                    ?: run {
+                        if (distanceToFirst > 0)
+                            getString(R.string.lessons_not_started)
+                        else
+                            getString(R.string.lesson_break)
+                    }
+
+            val nextLessonName =
+                if (currentLesson == null) // Если текущая пара - перемена
+                    nextLesson!!.getNameAndCabinetsShort(this@CurrentLessonViewService)
+                else if (nextLesson == null) // Если текущая пара - последняя
+                    getString(R.string.lessons_end)
+                else // Если после текущей пары есть ещё пара(ы)
+                    getString(R.string.lesson_break)
+
+            val nextLessonTotal =
+                if (currentLesson == null)
+                    nextLesson!!.time!!.start
+                else
+                    currentLesson.time!!.end
+
+            val notification = createNotification(
+                getString(
+                    if (distanceToFirst > 0)
+                        R.string.waiting_for_day_start_notification_title
+                    else
+                        R.string.lesson_going_notification_title,
+                    currentLessonDelay / 60,
+                    currentLessonDelay % 60
+                ),
+                getString(
+                    R.string.lesson_going_notification_description,
+                    currentLessonName,
+                    nextLessonTotal.fmtAsClock(),
+                    nextLessonName,
+                )
+            )
+            getNotificationManager().notify(NOTIFICATION_STATUS_ID, notification)
+
+            handler.postDelayed(this, UPDATE_INTERVAL)
+        }
+    }
+
+    private fun createNotification(
+        title: String? = null,
+        description: String? = null
+    ): Notification {
+        return NotificationCompat
+            .Builder(applicationContext, NotificationChannels.LESSON_VIEW)
+            .setSmallIcon(R.drawable.logo)
+            .setContentTitle(title ?: getString(R.string.lesson_notification_title))
+            .setContentText(description ?: getString(R.string.lesson_notification_description))
+            .setPriority(NotificationCompat.PRIORITY_HIGH)
+            .setOngoing(true)
+            .setSilent(true)
+            .build()
+    }
+
+    private fun getNotificationManager(): NotificationManager {
+        return getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+    }
+
+    fun updateSchedule(group: Group?): Boolean {
+        if (group == null) {
+            stopSelf()
+            return false
+        }
+
+        val day = group.getCurrentDay()
+        if (day?.value == null) {
+            stopSelf()
+            return false
+        }
+
+        val dayValue = day.value!!
+
+        if (this.day == null) {
+            if (dayValue.lessons[dayValue.defaultIndices[dayValue.defaultIndices.lastIndex]]!!.time!!.end
+                <= Calendar.getInstance()
+                    .get(Calendar.HOUR_OF_DAY) * 60 + Calendar.getInstance()
+                    .get(Calendar.MINUTE)
+            ) {
+                stopSelf()
+                return false
+            }
+        }
+
+        this.day = dayValue
+
+        this.handler.removeCallbacks(updateRunnable)
+        updateRunnable.run()
+
+        return true
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        if (!(applicationContext as PolytechnicApplication).hasNotificationPermission()) {
+            stopSelf()
+            return START_STICKY
+        }
+
+        if (intent == null)
+            throw NullPointerException("Intent shouldn't be null!")
+
+        val notification = createNotification()
+        startForeground(NOTIFICATION_STATUS_ID, notification)
+
+        if (!updateSchedule(
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                    intent.getParcelableExtra("group", Group::class.java)
+                } else {
+                    @Suppress("DEPRECATION")
+                    intent.getParcelableExtra("group")
+                }
+            )
+        )
+            updateRunnable.run()
+
+        return START_STICKY
+    }
+
+    override fun onBind(p0: Intent?): IBinder? {
+        return null
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/service/MyFirebaseMessagingService.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/service/MyFirebaseMessagingService.kt
index ed210a8..04de6bc 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/service/MyFirebaseMessagingService.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/service/MyFirebaseMessagingService.kt
@@ -78,6 +78,7 @@ class MyFirebaseMessagingService : FirebaseMessagingService() {
             }
 
             notify(id.hashCode(), notification)
+            CurrentLessonViewService.startService(applicationContext)
         }
     }
 
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/ui/MainActivity.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/ui/MainActivity.kt
index 37b2e5c..728a3e7 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/ui/MainActivity.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/ui/MainActivity.kt
@@ -3,8 +3,7 @@ package ru.n08i40k.polytechnic.next.ui
 import android.Manifest
 import android.app.NotificationChannel
 import android.app.NotificationManager
-import android.content.pm.PackageManager
-import android.os.Build
+import android.content.Intent
 import android.os.Bundle
 import android.util.Log
 import androidx.activity.ComponentActivity
@@ -18,7 +17,6 @@ import androidx.compose.foundation.layout.only
 import androidx.compose.foundation.layout.safeContent
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.ui.Modifier
-import androidx.core.content.ContextCompat
 import androidx.core.view.WindowCompat
 import androidx.lifecycle.lifecycleScope
 import androidx.work.BackoffPolicy
@@ -39,6 +37,8 @@ import kotlinx.coroutines.launch
 import ru.n08i40k.polytechnic.next.NotificationChannels
 import ru.n08i40k.polytechnic.next.PolytechnicApplication
 import ru.n08i40k.polytechnic.next.R
+import ru.n08i40k.polytechnic.next.data.MyResult
+import ru.n08i40k.polytechnic.next.service.CurrentLessonViewService
 import ru.n08i40k.polytechnic.next.settings.settingsDataStore
 import ru.n08i40k.polytechnic.next.work.FcmUpdateCallbackWorker
 import ru.n08i40k.polytechnic.next.work.LinkUpdateWorker
@@ -66,7 +66,7 @@ class MainActivity : ComponentActivity() {
     }
 
     private fun createNotificationChannels() {
-        if (!hasNotificationPermission())
+        if (!(applicationContext as PolytechnicApplication).hasNotificationPermission())
             return
 
         val notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
@@ -84,6 +84,13 @@ class MainActivity : ComponentActivity() {
             getString(R.string.app_update_channel_description),
             NotificationChannels.APP_UPDATE
         )
+
+        createNotificationChannel(
+            notificationManager,
+            getString(R.string.lesson_view_channel_name),
+            getString(R.string.lesson_view_channel_description),
+            NotificationChannels.LESSON_VIEW
+        )
     }
 
     private val requestPermissionLauncher =
@@ -91,15 +98,30 @@ class MainActivity : ComponentActivity() {
             if (it) createNotificationChannels()
         }
 
-    private fun hasNotificationPermission(): Boolean {
-        return (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU
-                || ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS)
-                == PackageManager.PERMISSION_GRANTED)
+    private fun askNotificationPermission() {
+        if (!(applicationContext as PolytechnicApplication).hasNotificationPermission())
+            requestPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
     }
 
-    private fun askNotificationPermission() {
-        if (!hasNotificationPermission())
-            requestPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+    private fun startTestService() {
+        if (!(applicationContext as PolytechnicApplication).hasNotificationPermission())
+            return
+
+        lifecycleScope.launch {
+            val schedule = (applicationContext as PolytechnicApplication)
+                .container
+                .scheduleRepository
+                .getGroup()
+
+            if (schedule is MyResult.Failure)
+                return@launch
+
+            val intent = Intent(this@MainActivity, CurrentLessonViewService::class.java)
+                .apply {
+                    putExtra("group", (schedule as MyResult.Success).data)
+                }
+            startForegroundService(intent)
+        }
     }
 
 
@@ -168,6 +190,7 @@ class MainActivity : ComponentActivity() {
         setupFirebaseConfig()
 
         handleUpdate()
+        startTestService()
 
         setContent {
             Box(Modifier.windowInsetsPadding(WindowInsets.safeContent.only(WindowInsetsSides.Top))) {
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/DayCard.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/DayCard.kt
index 60553b3..e5d7c0c 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/DayCard.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/DayCard.kt
@@ -67,8 +67,8 @@ fun calculateCurrentLessonIdx(lessons: ArrayList<Lesson?>): Int {
         .filterNotNull()
         .filter {
             it.time != null
-                    && it.time.start >= currentMinutes
-                    && it.time.end <= currentMinutes
+                    && it.time.start <= currentMinutes
+                    && it.time.end >= currentMinutes
         }
 
     if (filteredLessons.isEmpty())
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/LessonView.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/LessonView.kt
index faafdd1..5a9b7bc 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/LessonView.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/LessonView.kt
@@ -7,6 +7,7 @@ import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.wrapContentWidth
 import androidx.compose.material3.Card
 import androidx.compose.material3.CardColors
 import androidx.compose.material3.CardDefaults
@@ -30,26 +31,20 @@ import ru.n08i40k.polytechnic.next.data.schedule.impl.FakeScheduleRepository
 import ru.n08i40k.polytechnic.next.model.Day
 import ru.n08i40k.polytechnic.next.model.Lesson
 import ru.n08i40k.polytechnic.next.model.LessonTime
+import ru.n08i40k.polytechnic.next.utils.fmtAsClock
 
 private enum class LessonTimeFormat {
     FROM_TO, ONLY_MINUTES_DURATION
 }
 
-private fun numWithZero(num: Int): String {
-    return "0".repeat(if (num <= 9) 1 else 0) + num.toString()
-}
-
 @Composable
 private fun fmtTime(start: Int, end: Int, format: LessonTimeFormat): ArrayList<String> {
     return when (format) {
         LessonTimeFormat.FROM_TO -> {
-            val startHour = numWithZero(start / 60)
-            val startMinute = numWithZero(start % 60)
+            val startClock = start.fmtAsClock()
+            val endClock = end.fmtAsClock()
 
-            val endHour = numWithZero(end / 60)
-            val endMinute = numWithZero(end % 60)
-
-            arrayListOf("$startHour:$startMinute", "$endHour:$endMinute")
+            arrayListOf(startClock, endClock)
         }
 
         LessonTimeFormat.ONLY_MINUTES_DURATION -> {
@@ -86,13 +81,10 @@ fun LessonExtraInfo(
                     val duration =
                         if (lesson.time != null) lesson.time.end - lesson.time.start else 0
 
-                    val hours = duration / 60
-                    val minutes = duration % 60
-
-                    append(hours)
+                    append(duration / 60)
                     append(stringResource(R.string.hours))
                     append(" ")
-                    append(minutes)
+                    append(duration % 60)
                     append(stringResource(R.string.minutes))
                 }
                 Text(duration)
@@ -117,7 +109,10 @@ private fun LessonViewRow(
     time: LessonTime? = LessonTime(0, 60),
     timeFormat: LessonTimeFormat = LessonTimeFormat.FROM_TO,
     name: String = "Test",
-    teacherNames: ArrayList<String> = arrayListOf("Хомченко Н.Е.", "Хомченко Н.Е."),
+    teacherNames: ArrayList<String> = arrayListOf(
+        "Хомченко Н.Е. (1 подggggggggggggggggggggggggggggggggggggggгруппа)",
+        "Хомченко Н.Е. (2 подгруппа)"
+    ),
     cabinets: ArrayList<String> = arrayListOf("14", "31"),
     cardColors: CardColors = CardDefaults.cardColors(),
     verticalPadding: Dp = 10.dp
@@ -125,6 +120,8 @@ private fun LessonViewRow(
     val contentColor =
         if (timeFormat == LessonTimeFormat.FROM_TO) cardColors.contentColor else cardColors.disabledContentColor
 
+    val teacherNamesRepl = teacherNames.map { it.replace("подгруппа", "подгр.") }
+
     Row(
         modifier = Modifier.padding(10.dp, verticalPadding),
         verticalAlignment = Alignment.CenterVertically,
@@ -164,15 +161,12 @@ private fun LessonViewRow(
         Column(
             verticalArrangement = Arrangement.Center
         ) {
-            val fraction = if (cabinets.size == 0) 1F
-            else if (cabinets.any { it.contains("/") }) 0.9F
-            else 0.925F
-
-
-            Row {
-                Column {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                Column(modifier = Modifier.weight(1f)) {
                     Text(
-                        modifier = Modifier.fillMaxWidth(fraction),
                         text = name,
                         fontWeight = FontWeight.Medium,
                         maxLines = 1,
@@ -180,10 +174,9 @@ private fun LessonViewRow(
                         color = contentColor
                     )
 
-                    for (listIdx: Int in 0..<teacherNames.size) {
+                    for (teacherName in teacherNamesRepl) {
                         Text(
-                            modifier = Modifier.fillMaxWidth(fraction),
-                            text = teacherNames[listIdx],
+                            text = teacherName,
                             maxLines = 1,
                             overflow = TextOverflow.Ellipsis,
                             color = contentColor
@@ -191,18 +184,15 @@ private fun LessonViewRow(
                     }
                 }
 
-                Column {
-                    if (cabinets.size <= teacherNames.size) {
+                Column(modifier = Modifier.wrapContentWidth()) {
+                    if (cabinets.size <= teacherNamesRepl.size) {
                         Text(
-                            modifier = Modifier.fillMaxWidth(),
                             text = "",
                             maxLines = 1
                         )
                     }
                     for (listIdx: Int in 0..<cabinets.size) {
-
                         Text(
-                            modifier = Modifier.fillMaxWidth(),
                             text = cabinets[listIdx],
                             maxLines = 1,
                             overflow = TextOverflow.Ellipsis,
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/utils/Extensions.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/utils/Extensions.kt
index 2208efa..a960bd8 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/utils/Extensions.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/utils/Extensions.kt
@@ -4,4 +4,25 @@ infix fun <T> T?.or(data: T): T {
     if (this == null)
         return data
     return this
+}
+
+fun Int.fmtAsClockEntry(): String {
+    return "0".repeat(if (this <= 9) 1 else 0) + this.toString()
+}
+
+fun Int.fmtAsClock(): String {
+    val hours = this / 60
+    val minutes = this % 60
+
+    return hours.fmtAsClockEntry() + ":" + minutes.fmtAsClockEntry()
+}
+
+infix fun String.limit(count: Int): String {
+    if (this.length <= count)
+        return this
+
+    return this
+        .substring(0, count - 1)
+        .trimEnd()
+        .plus("…")
 }
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/work/LinkUpdateWorker.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/work/LinkUpdateWorker.kt
index bad1fb4..a6f43bc 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/work/LinkUpdateWorker.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/work/LinkUpdateWorker.kt
@@ -5,6 +5,7 @@ import androidx.work.Worker
 import androidx.work.WorkerParameters
 import kotlinx.coroutines.runBlocking
 import ru.n08i40k.polytechnic.next.PolytechnicApplication
+import ru.n08i40k.polytechnic.next.service.CurrentLessonViewService
 
 class LinkUpdateWorker(context: Context, params: WorkerParameters) :
     Worker(context, params) {
@@ -15,6 +16,9 @@ class LinkUpdateWorker(context: Context, params: WorkerParameters) :
                 .scheduleRepository
                 .getGroup()
         }
+
+        CurrentLessonViewService.startService(applicationContext)
+
         return Result.success()
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/work/StartClvService.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/work/StartClvService.kt
new file mode 100644
index 0000000..1610fff
--- /dev/null
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/work/StartClvService.kt
@@ -0,0 +1,41 @@
+package ru.n08i40k.polytechnic.next.work
+
+import android.content.Context
+import android.content.Intent
+import androidx.core.content.ContextCompat.startForegroundService
+import androidx.work.Worker
+import androidx.work.WorkerParameters
+import kotlinx.coroutines.runBlocking
+import ru.n08i40k.polytechnic.next.PolytechnicApplication
+import ru.n08i40k.polytechnic.next.data.MyResult
+import ru.n08i40k.polytechnic.next.service.CurrentLessonViewService
+
+class StartClvService(context: Context, workerParams: WorkerParameters) :
+    Worker(context, workerParams) {
+    override fun doWork(): Result {
+        val schedule = runBlocking {
+            (applicationContext as PolytechnicApplication)
+                .container
+                .scheduleRepository
+                .getGroup()
+        }
+
+        if (schedule is MyResult.Failure)
+            return Result.success()
+
+        val intent = Intent(applicationContext, CurrentLessonViewService::class.java)
+            .apply {
+                putExtra("group", (schedule as MyResult.Success).data)
+            }
+
+        applicationContext.stopService(
+            Intent(
+                applicationContext,
+                CurrentLessonViewService::class.java
+            )
+        )
+        startForegroundService(applicationContext, intent)
+
+        return Result.success()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 946186d..36d44b2 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -51,4 +51,18 @@
     <string name="app_update_channel_description">Информирует о выходе новой версии этого приложения</string>
     <string name="app_update_title">Вышла версия %1$s!</string>
     <string name="app_update_description">Нажмите что бы загрузить обновление.</string>
+    <string name="lesson_view_channel_name">Текущая пара</string>
+    <string name="lesson_view_channel_description">Отображает текущую пару или перемену в уведомлении</string>
+    <string name="lesson_notification_title">Загрузка расписания…</string>
+    <string name="lesson_notification_description">Это уведомление обновится в течении нескольких секунд!</string>
+    <string name="lesson_going_notification_title">До конца %1$d ч. %2$d мин.</string>
+    <string name="lesson_going_notification_description">%1$s\n| Далее в %2$s - %3$s</string>
+    <string name="lessons_end">Конец пар</string>
+    <string name="lessons_end_notification_title">Пары закончились!</string>
+    <string name="lessons_end_notification_description">Ура, можно идти домой! Наверное :(</string>
+    <string name="cabinets_short_lc">каб.</string>
+    <string name="in_cabinets_short_lc">в %1$s каб.</string>
+    <string name="in_gym_lc">в спорт-зале</string>
+    <string name="lessons_not_started">Пары ещё не начались</string>
+    <string name="waiting_for_day_start_notification_title">До начала пар %1$d ч. %2$d мин.</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index dcff827..e3a855b 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -51,4 +51,18 @@
     <string name="app_update_channel_description">Inform about new version of this app has been released</string>
     <string name="app_update_title">Version %1$s released!</string>
     <string name="app_update_description">Click to download new version.</string>
+    <string name="lesson_view_channel_name">Current lesson</string>
+    <string name="lesson_view_channel_description">View current lesson and breaks in notification</string>
+    <string name="lesson_notification_title">Loading schedule…</string>
+    <string name="lesson_notification_description">This notification will be updated in several seconds!</string>
+    <string name="lesson_going_notification_title">To end %1$d h. %2$d min.</string>
+    <string name="lesson_going_notification_description">%1$s\n| After in %2$s - %3$s</string>
+    <string name="lessons_end">Lessons end</string>
+    <string name="lessons_end_notification_title">Lessons finished!</string>
+    <string name="lessons_end_notification_description">TODO</string>
+    <string name="cabinets_short_lc">cab.</string>
+    <string name="in_cabinets_short_lc">in %1$s cab.</string>
+    <string name="in_gym_lc">in gym</string>
+    <string name="lessons_not_started">Lessons haven\'t started yet</string>
+    <string name="waiting_for_day_start_notification_title">%1$d h. %2$d min. before lessons start</string>
 </resources>
\ No newline at end of file