[4.0] Update build.gradle, signing and changelog.

.gitignore

@@ -86,4 +86,5 @@ app/schemas/
 
 signatures/
 
-app/.cxx
+app/.cxx
+/i18n/

.idea/jarRepositories.xml

@@ -41,5 +41,15 @@
       <option name="name" value="MavenRepo" />
       <option name="url" value="https://repo.maven.apache.org/maven2/" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven4" />
+      <option name="name" value="maven4" />
+      <option name="url" value="https://dl.bintray.com/undervoid/Powerpermission" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven4" />
+      <option name="name" value="maven4" />
+      <option name="url" value="https://dl.bintray.com/undervoid/PowerPermission" />
+    </remote-repository>
   </component>
 </project>

app/build.gradle

@@ -198,6 +198,9 @@ dependencies {
     kapt project(":codegen")
 
     implementation 'com.google.android:flexbox:2.0.1'
+
+    implementation 'com.qifan.powerpermission:powerpermission:1.0.0'
+    implementation 'com.qifan.powerpermission:powerpermission-coroutines:1.0.0'
 }
 repositories {
     mavenCentral()

app/src/main/AndroidManifest.xml

@@ -14,6 +14,9 @@
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 
+    <!-- PowerPermission uses minSdk 21, it's safe to override as it is used only in >= 23 -->
+    <uses-sdk tools:overrideLibrary="com.qifan.powerpermission.coroutines, com.qifan.powerpermission.core" />
+
     <application
         android:name=".App"
         android:allowBackup="true"

app/src/main/assets/pl-changelog.html

@@ -1,15 +1,10 @@
-<h3>Wersja 4.0-rc.5, 2020-04-05</h3>
-<ul>
-    <li>Możliwość pobierania załączników do zadań domowych (Librus, MobiDziennik, iDziennik).</li>
-    <li>Widok pełnej treści zadań domowych (iDziennik, EduDziennik).</li>
-    <li>Wyszukiwarka wiadomości, pozwalająca na łatwe znalezienie potrzebnej konwersacji.</li>
-    <li>Możliwość usuwania odebranych wiadomości w aplikacji.</li>
-</ul>
-<!--<h3>Wersja 4.0-rc.3, 2020-03-29</h3>
+<h3>Wersja 4.0, 2020-04-19</h3>
 <ul>
     <li><b><u>Wysyłanie wiadomości</u></b> - funkcja, na którą czekał każdy. Od teraz w Szkolnym można wysyłać oraz odpowiadać na wiadomości do nauczycieli &#x1F44F;</li>
     <li><b>Przebudowaliśmy cały moduł synchronizacji</b>, co oznacza większą stabilność aplikacji, szybkość oraz poprawność pobieranych danych</li>
     <li>Udoskonalony wygląd Szkolnego - sprawi, że korzystanie z aplikacji będzie jeszcze przyjemniejsze</li>
+    <li>Wyszukiwarka wiadomości, pozwalająca na łatwe znalezienie potrzebnej konwersacji.</li>
+    <li>Możliwość pobierania załączników do zadań domowych oraz wiadomości w każdym dzienniku.</li>
     <li>Nowa <b>Strona główna</b> - ładniejszy wygląd oraz możliwość przestawiania kart na każdym profilu</li>
     <li>Nowy <b>Plan lekcji</b> - z doskonałą obsługą lekcji przesuniętych oraz dwóch lekcji o tej samej godzinie</li>
     <li>Nowe <b>Oceny</b> - z możliwością zmiany wartości plusów oraz minusów oraz wyłączenia niektórych ocen ze średniej</li>
@@ -17,6 +12,7 @@
     <li>Znaczki nieprzeczytanych informacji na obrazkach profili.</li>
     <br>
     <br>
+    <li>Udoskonalone tłumaczenie na j.angielski (dzięki @Predator)</li>
     <li>Nowe okienka informacji o wydarzeniach oraz lekcjach</li>
     <li>Nowe, przyjemniejsze powiadomienia</li>
     <li>Dużo poprawek w widoku <b>Wiadomości</b> oraz <b>Ogłoszeń</b></li>
@@ -29,7 +25,7 @@
     <li>Poprawiliśmy synchronizację w tle na niektórych telefonach</li>
     <li>Usunąłem denerwujący brak zaznaczenia w lewym menu</li>
     <li>Znaczna ilość błędów z poprzednich wersji już nie występuje</li>
-</ul>-->
+</ul>
 <br>
 <br>
 Dzięki za korzystanie ze Szkolnego!<br>

app/src/main/cpp/szkolny-signing.cpp

@@ -9,7 +9,7 @@
 
 /*secret password - removed for source code publication*/
 static toys AES_IV[16] = {
-	0x7b, 0x51, 0x86, 0xc5, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
+	0x38, 0xd4, 0x73, 0xaf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
 
 unsigned char *agony(unsigned int laugh, unsigned char *box, unsigned char *heat);
 

app/src/main/java/pl/szczodrzynski/edziennik/App.kt

@@ -65,6 +65,7 @@ class App : MultiDexApplication(), Configuration.Provider, CoroutineScope {
     val gradesManager by lazy { GradesManager(this) }
     val timetableManager by lazy { TimetableManager(this) }
     val eventManager by lazy { EventManager(this) }
+    val permissionManager by lazy { PermissionManager(this) }
 
     val db
         get() = App.db
@@ -166,6 +167,10 @@ class App : MultiDexApplication(), Configuration.Provider, CoroutineScope {
             db.profileDao().firstId?.let { profileLoadById(it) }
         }
 
+        config.ui.language?.let {
+            setLanguage(it)
+        }
+
         devMode = BuildConfig.DEBUG
 
         Signing.getCert(this)

app/src/main/java/pl/szczodrzynski/edziennik/Extensions.kt

@@ -454,7 +454,7 @@ operator fun MatchResult.get(group: Int): String {
     return groupValues[group]
 }
 
-fun Activity.setLanguage(language: String) {
+fun Context.setLanguage(language: String) {
     val locale = Locale(language.toLowerCase(Locale.ROOT))
     val configuration = resources.configuration
     Locale.setDefault(locale)
@@ -463,7 +463,6 @@ fun Activity.setLanguage(language: String) {
     }
     configuration.locale = locale
     resources.updateConfiguration(configuration, resources.displayMetrics)
-    baseContext.resources.updateConfiguration(configuration, baseContext.resources.displayMetrics)
 }
 
 /*

app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt

@@ -226,8 +226,8 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
             list += NavTarget(TARGET_MESSAGES_DETAILS, R.string.menu_message, MessageFragment::class).withPopTo(DRAWER_ITEM_MESSAGES)
             list += NavTarget(TARGET_MESSAGES_COMPOSE, R.string.menu_message_compose, MessagesComposeFragment::class)
             list += NavTarget(TARGET_WEB_PUSH, R.string.menu_web_push, WebPushFragment::class)
-            list += NavTarget(DRAWER_ITEM_DEBUG, R.string.menu_debug, DebugFragment::class)
-            if (App.devMode) {
+            if (App.debugMode) {
+                list += NavTarget(DRAWER_ITEM_DEBUG, R.string.menu_debug, DebugFragment::class)
                 list += NavTarget(TARGET_LAB, R.string.menu_lab, LabFragment::class)
                         .withIcon(CommunityMaterial.Icon.cmd_flask_outline)
                         .isInDrawer(true)
@@ -414,8 +414,6 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
                 R.color.md_green_500
         )
 
-        isStoragePermissionGranted()
-
         SyncWorker.scheduleNext(app)
         UpdateWorker.scheduleNext(app)
 

app/src/main/java/pl/szczodrzynski/edziennik/data/api/Constants.kt

@@ -111,5 +111,7 @@ const val VULCAN_API_ENDPOINT_MESSAGES_SENT = "mobile-api/Uczen.v3.Uczen/Wiadomo
 const val VULCAN_API_ENDPOINT_MESSAGES_CHANGE_STATUS = "mobile-api/Uczen.v3.Uczen/ZmienStatusWiadomosci"
 const val VULCAN_API_ENDPOINT_MESSAGES_ADD = "mobile-api/Uczen.v3.Uczen/DodajWiadomosc"
 const val VULCAN_API_ENDPOINT_PUSH = "mobile-api/Uczen.v3.Uczen/UstawPushToken"
+const val VULCAN_API_ENDPOINT_MESSAGES_ATTACHMENTS = "mobile-api/Uczen.v3.Uczen/WiadomosciZalacznik"
+const val VULCAN_API_ENDPOINT_HOMEWORK_ATTACHMENTS = "mobile-api/Uczen.v3.Uczen/ZadaniaDomoweZalacznik"
 
 const val EDUDZIENNIK_USER_AGENT = "Szkolny.eu/${BuildConfig.VERSION_NAME}"

app/src/main/java/pl/szczodrzynski/edziennik/data/api/Errors.kt

@@ -158,6 +158,7 @@ const val ERROR_LOGIN_VULCAN_NO_PUPILS                      = 331
 const val ERROR_VULCAN_API_MAINTENANCE                      = 340
 const val ERROR_VULCAN_API_BAD_REQUEST                      = 341
 const val ERROR_VULCAN_API_OTHER                            = 342
+const val ERROR_VULCAN_ATTACHMENT_DOWNLOAD                  = 343
 
 const val ERROR_LOGIN_IDZIENNIK_WEB_INVALID_LOGIN           = 401
 const val ERROR_LOGIN_IDZIENNIK_WEB_INVALID_SCHOOL_NAME     = 402
@@ -207,5 +208,6 @@ const val EXCEPTION_IDZIENNIK_WEB_API_REQUEST               = 913
 const val EXCEPTION_IDZIENNIK_API_REQUEST                   = 914
 const val EXCEPTION_EDUDZIENNIK_WEB_REQUEST                 = 920
 const val EXCEPTION_EDUDZIENNIK_FILE_REQUEST                = 921
+const val ERROR_ONEDRIVE_DOWNLOAD                           = 930
 
 const val LOGIN_NO_ARGUMENTS                                = 1201

app/src/main/java/pl/szczodrzynski/edziennik/data/api/Regexes.kt

@@ -97,7 +97,7 @@ object Regexes {
         """zadanieFormularz\(([0-9]+),""".toRegex(DOT_MATCHES_ALL)
     }
     val MOBIDZIENNIK_HOMEWORK_ATTACHMENT by lazy {
-        """zalacznik=([0-9]+)'.+?word-break">(.+?)</td>""".toRegex(DOT_MATCHES_ALL)
+        """zalacznik(_zadania)?=([0-9]+)'.+?word-break">(.+?)</td>""".toRegex(DOT_MATCHES_ALL)
     }
 
 

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/helper/OneDriveDownloadAttachment.kt

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-4-7.
+ */
+
+package pl.szczodrzynski.edziennik.data.api.edziennik.helper
+
+import im.wangchao.mhttp.Request
+import im.wangchao.mhttp.Response
+import im.wangchao.mhttp.callback.FileCallbackHandler
+import im.wangchao.mhttp.callback.TextCallbackHandler
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.data.api.ERROR_ONEDRIVE_DOWNLOAD
+import pl.szczodrzynski.edziennik.data.api.ERROR_REQUEST_FAILURE
+import pl.szczodrzynski.edziennik.data.api.SYSTEM_USER_AGENT
+import pl.szczodrzynski.edziennik.data.api.models.ApiError
+import pl.szczodrzynski.edziennik.utils.Utils
+import java.io.File
+
+class OneDriveDownloadAttachment(
+        app: App,
+        fileUrl: String,
+        val onSuccess: (file: File) -> Unit,
+        val onProgress: (written: Long, total: Long) -> Unit,
+        val onError: (apiError: ApiError) -> Unit
+) {
+    companion object {
+        private const val TAG = "OneDriveDownloadAttachment"
+    }
+
+    init {
+        Request.builder()
+                .url(fileUrl)
+                .userAgent(SYSTEM_USER_AGENT)
+                .withClient(app.httpLazy)
+                .callback(object : TextCallbackHandler() {
+                    override fun onSuccess(text: String, response: Response) {
+                        val location = response.headers().get("Location")
+                        // https://onedrive.live.com/redir?resid=D75496A2EB87531C!706&authkey=!ABjZeh3pHMqj11Q
+                        if (location?.contains("onedrive.live.com/redir?resid=") != true) {
+                            onError(ApiError(TAG, ERROR_ONEDRIVE_DOWNLOAD)
+                                    .withApiResponse(text)
+                                    .withResponse(response))
+                            return
+                        }
+                        val url = location
+                                .replace("onedrive.live.com/redir?resid=", "storage.live.com/items/")
+                                .replace("?", "&")
+                                .replaceFirst("&", "?")
+                        downloadFile(url)
+                    }
+
+                    override fun onFailure(response: Response, throwable: Throwable) {
+                        onError(ApiError(TAG, ERROR_REQUEST_FAILURE)
+                                .withResponse(response)
+                                .withThrowable(throwable))
+                    }
+                })
+                .build()
+                .enqueue()
+    }
+
+    private fun downloadFile(url: String) {
+        val targetFile = Utils.getStorageDir()
+
+        val callback = object : FileCallbackHandler(targetFile) {
+            override fun onSuccess(file: File?, response: Response?) {
+                if (file == null) {
+                    onError(ApiError(TAG, ERROR_ONEDRIVE_DOWNLOAD)
+                            .withResponse(response))
+                    return
+                }
+
+                try {
+                    onSuccess(file)
+                } catch (e: Exception) {
+                    onError(ApiError(TAG, ERROR_ONEDRIVE_DOWNLOAD)
+                            .withResponse(response)
+                            .withThrowable(e))
+                }
+            }
+
+            override fun onProgress(bytesWritten: Long, bytesTotal: Long) {
+                try {
+                    this@OneDriveDownloadAttachment.onProgress(bytesWritten, bytesTotal)
+                } catch (e: Exception) {
+                    onError(ApiError(TAG, ERROR_ONEDRIVE_DOWNLOAD)
+                            .withThrowable(e))
+                }
+            }
+
+            override fun onFailure(response: Response?, throwable: Throwable?) {
+                onError(ApiError(TAG, ERROR_REQUEST_FAILURE)
+                        .withResponse(response)
+                        .withThrowable(throwable))
+            }
+        }
+
+        Request.builder()
+                .url(url)
+                .userAgent(SYSTEM_USER_AGENT)
+                .callback(callback)
+                .build()
+                .enqueue()
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/messages/LibrusSandboxDownloadAttachment.kt

@@ -54,13 +54,13 @@ class LibrusSandboxDownloadAttachment(override val data: DataLibrus,
     }
 
     private fun getAttachmentCheckKey(attachmentKey: String, callback: () -> Unit) {
-        sandboxGet(LibrusMessagesGetAttachment.TAG, "CSCheckKey",
+        sandboxGet(TAG, "CSCheckKey",
                 parameters = mapOf("singleUseKey" to attachmentKey)) { json ->
 
             when (json.getString("status")) {
                 "not_downloaded_yet" -> {
                     if (getAttachmentCheckKeyTries++ > 5) {
-                        data.error(ApiError(LibrusMessagesGetAttachment.TAG, ERROR_FILE_DOWNLOAD)
+                        data.error(ApiError(TAG, ERROR_FILE_DOWNLOAD)
                                 .withApiResponse(json))
                         return@sandboxGet
                     }
@@ -75,7 +75,7 @@ class LibrusSandboxDownloadAttachment(override val data: DataLibrus,
                 }
 
                 else -> {
-                    data.error(ApiError(LibrusMessagesGetAttachment.TAG, EXCEPTION_LIBRUS_MESSAGES_REQUEST)
+                    data.error(ApiError(TAG, EXCEPTION_LIBRUS_MESSAGES_REQUEST)
                             .withApiResponse(json))
                 }
             }
@@ -85,7 +85,7 @@ class LibrusSandboxDownloadAttachment(override val data: DataLibrus,
     private fun downloadAttachment(url: String, method: Int = GET) {
         val targetFile = File(Utils.getStorageDir(), attachmentName)
 
-        sandboxGetFile(LibrusMessagesGetAttachment.TAG, url, targetFile, { file ->
+        sandboxGetFile(TAG, url, targetFile, { file ->
 
             val event = AttachmentGetEvent(
                     profileId,

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/data/web/MobidziennikWebGetAttachment.kt

@@ -29,14 +29,14 @@ class MobidziennikWebGetAttachment(override val data: DataMobidziennik,
 
         val typeUrl = when (owner) {
             is Message -> if (owner.type == Message.TYPE_SENT)
-                "dziennik/wiadwyslana?id="
+                "dziennik/wiadwyslana/?id="
             else
-                "dziennik/wiadodebrana?id="
+                "dziennik/wiadodebrana/?id="
 
             is Event -> if (owner.date >= Date.getToday())
-                "mobile/zadaniadomowe?id_zadania="
+                "dziennik/wyslijzadanie/?id_zadania="
             else
-                "mobile/zadaniadomowearchiwalne?id_zadania="
+                "dziennik/wyslijzadanie/?id_zadania="
 
             else -> ""
         }
@@ -47,7 +47,7 @@ class MobidziennikWebGetAttachment(override val data: DataMobidziennik,
             else -> -1
         }
 
-        webGetFile(TAG, "/$typeUrl${ownerId}&zalacznik=$attachmentId", targetFile, { file ->
+        webGetFile(TAG, "/$typeUrl${ownerId}&uczen=${data.studentId}&zalacznik=$attachmentId", targetFile, { file ->
 
             val event = AttachmentGetEvent(
                     profileId,

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/data/web/MobidziennikWebGetHomework.kt

@@ -39,9 +39,9 @@ class MobidziennikWebGetHomework(override val data: DataMobidziennik,
 
                 event.attachmentIds = mutableListOf()
                 event.attachmentNames = mutableListOf()
-                Regexes.MOBIDZIENNIK_HOMEWORK_ATTACHMENT.findAll(tableRow).onEach {
-                    event.attachmentIds?.add(it[1].toLongOrNull() ?: return@onEach)
-                    event.attachmentNames?.add(it[2])
+                Regexes.MOBIDZIENNIK_HOMEWORK_ATTACHMENT.findAll(tableRow).forEach {
+                    event.attachmentIds?.add(it[2].toLongOrNull() ?: return@forEach)
+                    event.attachmentNames?.add(it[3])
                 }
 
                 event.homeworkBody = ""

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/Vulcan.kt

@@ -5,26 +5,31 @@
 package pl.szczodrzynski.edziennik.data.api.edziennik.vulcan
 
 import com.google.gson.JsonObject
+import org.greenrobot.eventbus.EventBus
 import pl.szczodrzynski.edziennik.App
-import pl.szczodrzynski.edziennik.data.api.LOGIN_METHOD_VULCAN_API
+import pl.szczodrzynski.edziennik.data.api.*
+import pl.szczodrzynski.edziennik.data.api.edziennik.helper.OneDriveDownloadAttachment
 import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.data.VulcanData
+import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.data.api.VulcanApiAttachments
 import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.data.api.VulcanApiMessagesChangeStatus
 import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.data.api.VulcanApiSendMessage
 import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.firstlogin.VulcanFirstLogin
 import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.login.VulcanLogin
+import pl.szczodrzynski.edziennik.data.api.events.AttachmentGetEvent
+import pl.szczodrzynski.edziennik.data.api.events.EventGetEvent
+import pl.szczodrzynski.edziennik.data.api.events.MessageGetEvent
 import pl.szczodrzynski.edziennik.data.api.interfaces.EdziennikCallback
 import pl.szczodrzynski.edziennik.data.api.interfaces.EdziennikInterface
 import pl.szczodrzynski.edziennik.data.api.models.ApiError
-import pl.szczodrzynski.edziennik.data.api.prepare
-import pl.szczodrzynski.edziennik.data.api.prepareFor
-import pl.szczodrzynski.edziennik.data.api.vulcanLoginMethods
 import pl.szczodrzynski.edziennik.data.db.entity.LoginStore
 import pl.szczodrzynski.edziennik.data.db.entity.Profile
 import pl.szczodrzynski.edziennik.data.db.entity.Teacher
 import pl.szczodrzynski.edziennik.data.db.full.AnnouncementFull
 import pl.szczodrzynski.edziennik.data.db.full.EventFull
 import pl.szczodrzynski.edziennik.data.db.full.MessageFull
+import pl.szczodrzynski.edziennik.utils.Utils
 import pl.szczodrzynski.edziennik.utils.Utils.d
+import java.io.File
 
 class Vulcan(val app: App, val profile: Profile?, val loginStore: LoginStore, val callback: EdziennikCallback) : EdziennikInterface {
     companion object {
@@ -87,8 +92,29 @@ class Vulcan(val app: App, val profile: Profile?, val loginStore: LoginStore, va
 
     override fun getMessage(message: MessageFull) {
         login(LOGIN_METHOD_VULCAN_API) {
-            VulcanApiMessagesChangeStatus(data, message) {
-                completed()
+            if (message.attachmentIds != null) {
+                VulcanApiMessagesChangeStatus(data, message) {
+                    completed()
+                }
+                return@login
+            }
+            val list = data.app.db.messageDao().getAllNow(data.profileId)
+            VulcanApiAttachments(data, list, message, MessageFull::class) { _ ->
+                list.forEach {
+                    if (it.attachmentIds == null)
+                        it.attachmentIds = mutableListOf()
+                    data.messageList.add(it)
+                }
+                data.messageListReplace = true
+
+                if (message.seen) {
+                    EventBus.getDefault().postSticky(MessageGetEvent(message))
+                    completed()
+                    return@VulcanApiAttachments
+                }
+                VulcanApiMessagesChangeStatus(data, message) {
+                    completed()
+                }
             }
         }
     }
@@ -103,9 +129,66 @@ class Vulcan(val app: App, val profile: Profile?, val loginStore: LoginStore, va
 
     override fun markAllAnnouncementsAsRead() {}
     override fun getAnnouncement(announcement: AnnouncementFull) {}
-    override fun getAttachment(owner: Any, attachmentId: Long, attachmentName: String) {}
     override fun getRecipientList() {}
-    override fun getEvent(eventFull: EventFull) {}
+
+    override fun getAttachment(owner: Any, attachmentId: Long, attachmentName: String) {
+        val fileUrl = attachmentName.substringAfter(":")
+        if (attachmentName == fileUrl) {
+            data.error(ApiError(TAG, ERROR_ONEDRIVE_DOWNLOAD))
+            return
+        }
+
+        OneDriveDownloadAttachment(
+                app,
+                fileUrl,
+                onSuccess = { file ->
+                    val event = AttachmentGetEvent(
+                            data.profileId,
+                            owner,
+                            attachmentId,
+                            AttachmentGetEvent.TYPE_FINISHED,
+                            file.absolutePath
+                    )
+
+                    val attachmentDataFile = File(Utils.getStorageDir(), ".${data.profileId}_${event.ownerId}_${event.attachmentId}")
+                    Utils.writeStringToFile(attachmentDataFile, event.fileName)
+
+                    EventBus.getDefault().postSticky(event)
+
+                    completed()
+                },
+                onProgress = { written, total ->
+                    val event = AttachmentGetEvent(
+                            data.profileId,
+                            owner,
+                            attachmentId,
+                            AttachmentGetEvent.TYPE_PROGRESS,
+                            bytesWritten = written
+                    )
+
+                    EventBus.getDefault().postSticky(event)
+                },
+                onError = { apiError ->
+                    data.error(apiError)
+                }
+        )
+    }
+
+    override fun getEvent(eventFull: EventFull) {
+        login(LOGIN_METHOD_VULCAN_API) {
+            val list = data.app.db.eventDao().getAllNow(data.profileId).filter { !it.addedManually }
+            VulcanApiAttachments(data, list, eventFull, EventFull::class) { _ ->
+                list.forEach {
+                    it.homeworkBody = ""
+                    data.eventList.add(it)
+                }
+                data.eventListReplace = true
+
+                EventBus.getDefault().postSticky(EventGetEvent(eventFull))
+                completed()
+            }
+        }
+    }
 
     override fun firstLogin() { VulcanFirstLogin(data) { completed() } }
     override fun cancel() {

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/api/VulcanApiAttachments.kt

@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-4-6.
+ */
+
+package pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.data.api
+
+import pl.szczodrzynski.edziennik.asJsonObjectList
+import pl.szczodrzynski.edziennik.data.api.VULCAN_API_ENDPOINT_HOMEWORK_ATTACHMENTS
+import pl.szczodrzynski.edziennik.data.api.VULCAN_API_ENDPOINT_MESSAGES_ATTACHMENTS
+import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.DataVulcan
+import pl.szczodrzynski.edziennik.data.api.edziennik.vulcan.data.VulcanApi
+import pl.szczodrzynski.edziennik.data.db.full.EventFull
+import pl.szczodrzynski.edziennik.data.db.full.MessageFull
+import pl.szczodrzynski.edziennik.getJsonArray
+import pl.szczodrzynski.edziennik.getLong
+import pl.szczodrzynski.edziennik.getString
+import pl.szczodrzynski.edziennik.utils.models.Date
+import kotlin.reflect.KClass
+
+class VulcanApiAttachments(override val data: DataVulcan,
+                           val list: List<*>,
+                           val owner: Any?,
+                           val ownerClass: KClass<*>,
+                           val onSuccess: (list: List<*>) -> Unit
+) : VulcanApi(data, null) {
+    companion object {
+        const val TAG = "VulcanApiAttachments"
+    }
+
+    init { run {
+        val endpoint = when (ownerClass) {
+            MessageFull::class -> VULCAN_API_ENDPOINT_MESSAGES_ATTACHMENTS
+            EventFull::class -> VULCAN_API_ENDPOINT_HOMEWORK_ATTACHMENTS
+            else -> null
+        } ?: return@run
+
+        val idName = when (ownerClass) {
+            MessageFull::class -> "IdWiadomosc"
+            EventFull::class -> "IdZadanieDomowe"
+            else -> null
+        } ?: return@run
+
+        val startDate = profile?.getSemesterStart(profile?.currentSemester ?: 1)?.inUnix ?: 0
+        val endDate = Date.getToday().stepForward(0, 1, 0).inUnix
+
+        apiGet(TAG, endpoint, parameters = mapOf(
+                "DataPoczatkowa" to startDate,
+                "DataKoncowa" to endDate,
+                "LoginId" to data.studentLoginId,
+                "IdUczen" to data.studentId
+        )) { json, _ ->
+
+            json.getJsonArray("Data")?.asJsonObjectList()?.forEach { attachment ->
+                val id = attachment.getLong("Id") ?: return@forEach
+                val itemId = attachment.getLong(idName) ?: return@forEach
+                val url = attachment.getString("Url") ?: return@forEach
+                val fileName = "${attachment.getString("NazwaPliku")}:$url"
+
+                list.forEach {
+                    if (it is MessageFull
+                            && it.profileId == profileId
+                            && it.id == itemId
+                            && it.attachmentIds?.contains(id) != true) {
+                        if (it.attachmentIds == null)
+                            it.attachmentIds = mutableListOf()
+                        if (it.attachmentNames == null)
+                            it.attachmentNames = mutableListOf()
+                        it.attachmentIds?.add(id)
+                        it.attachmentNames?.add(fileName)
+                    }
+
+                    if (it is EventFull
+                            && it.profileId == profileId
+                            && it.id == itemId
+                            && it.attachmentIds?.contains(id) != true) {
+                        if (it.attachmentIds == null)
+                            it.attachmentIds = mutableListOf()
+                        if (it.attachmentNames == null)
+                            it.attachmentNames = mutableListOf()
+                        it.attachmentIds?.add(id)
+                        it.attachmentNames?.add(fileName)
+                    }
+
+                    if (owner is MessageFull
+                            && it is MessageFull
+                            && owner.profileId == it.profileId
+                            && owner.id == it.id) {
+                        owner.attachmentIds = it.attachmentIds
+                        owner.attachmentNames = it.attachmentNames
+                    }
+
+                    if (owner is EventFull
+                            && it is EventFull
+                            && owner.profileId == it.profileId
+                            && owner.id == it.id) {
+                        owner.attachmentIds = it.attachmentIds
+                        owner.attachmentNames = it.attachmentNames
+                    }
+                }
+            }
+
+            /*if (owner is MessageFull) {
+                list.forEach {
+                    (it as? MessageFull)?.let { message ->
+                        data.messageList.add(message)
+                    }
+                }
+                data.messageListReplace = true
+            }
+
+            if (owner is EventFull) {
+                list.forEach {
+                    (it as? EventFull)?.let { it1 ->
+                        it1.homeworkBody = ""
+                        data.eventList.add(it1)
+                    }
+                }
+                data.eventListReplace = true
+            }*/
+
+            onSuccess(list)
+        }
+    }}
+}

app/src/main/java/pl/szczodrzynski/edziennik/data/api/models/Data.kt

@@ -197,6 +197,13 @@ abstract class Data(val app: App, val profile: Profile?, val loginStore: LoginSt
 
         profile.userCode = generateUserCode()
 
+        // update profile subname with class name, school year and account type
+        profile.subname = joinNotNullStrings(
+                " - ",
+                profile.studentClassName,
+                "${profile.studentSchoolYearStart}/${profile.studentSchoolYearStart + 1}"
+        ) + " " + app.getString(if (profile.isParent) R.string.login_summary_account_parent else R.string.login_summary_account_child)
+
         db.profileDao().add(profile)
         db.loginStoreDao().add(loginStore)
 

app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt

@@ -46,6 +46,6 @@ object Signing {
 
     /*fun provideKey(param1: String, param2: Long): ByteArray {*/
     fun pleaseStopRightNow(param1: String, param2: Long): ByteArray {
-        return "$param1.MTIzNDU2Nzg5MD43hCWBBS===.$param2".sha256()
+        return "$param1.MTIzNDU2Nzg5MDP/4SAI6B===.$param2".sha256()
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/entity/Profile.kt

@@ -17,6 +17,7 @@ import com.google.gson.JsonObject
 import pl.droidsonroids.gif.GifDrawable
 import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.api.LOGIN_TYPE_EDUDZIENNIK
+import pl.szczodrzynski.edziennik.utils.ProfileImageHolder
 import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.navlib.ImageHolder
 import pl.szczodrzynski.navlib.R
@@ -128,7 +129,7 @@ open class Profile(
     override fun getImageHolder(context: Context): ImageHolder {
         return if (!image.isNullOrEmpty()) {
             try {
-                ImageHolder(image ?: "")
+                ProfileImageHolder(image ?: "")
             } catch (_: Exception) {
                 ImageHolder(R.drawable.profile, colorFromName(name))
             }

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventDetailsDialog.kt

@@ -244,6 +244,8 @@ class EventDetailsDialog(
     @Subscribe(threadMode = ThreadMode.MAIN, sticky = true)
     fun onEventGetEvent(event: EventGetEvent) {
         EventBus.getDefault().removeStickyEvent(event)
+        if (event.event.homeworkBody == null)
+            event.event.homeworkBody = ""
         update()
     }
 

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/debug/LabFragment.kt

@@ -60,5 +60,9 @@ class LabFragment : Fragment(), CoroutineScope {
         b.rodo.onClick {
             app.db.teacherDao().query(SimpleSQLiteQuery("UPDATE teachers SET teacherSurname = \"\" WHERE profileId = ${App.profileId}"))
         }
+
+        b.removeHomework.onClick {
+            app.db.eventDao().getRawNow("UPDATE events SET homeworkBody = NULL WHERE profileId = ${App.profileId}")
+        }
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/grades/viewholder/SubjectViewHolder.kt

@@ -112,6 +112,9 @@ class SubjectViewHolder(
             ))
         }
 
+        // remove previously added grades from year preview
+        if (b.yearContainer.childCount > 1)
+            b.yearContainer.removeViews(1, b.yearContainer.childCount - 1)
         // add the yearly grades to summary container (expanded)
         item.proposedGrade?.let {
             b.yearContainer.addView(GradeView(

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/login/LoginChooserFragment.kt

@@ -85,6 +85,7 @@ class LoginChooserFragment : Fragment() {
         }
 
         b.devMode.visibility = if (App.debugMode) View.VISIBLE else View.GONE
+        b.devMode.isChecked = app.config.debugMode
         b.devMode.onChange { v, isChecked ->
             if (isChecked) {
                 MaterialDialog.Builder(activity)
@@ -94,6 +95,7 @@ class LoginChooserFragment : Fragment() {
                         .negativeText(R.string.no)
                         .onPositive { _: MaterialDialog?, _: DialogAction? ->
                             app.config.debugMode = true
+                            App.devMode = true
                             MaterialAlertDialogBuilder(activity)
                                     .setTitle("Restart")
                                     .setMessage("Wymagany restart aplikacji")
@@ -104,12 +106,10 @@ class LoginChooserFragment : Fragment() {
                                     }
                                     .setCancelable(false)
                                     .show()
-                            /*if (b.devModeLayout.getVisibility() !== View.VISIBLE) {
-                                Anim.expand(b.devModeTitle, 500, null)
-                                Anim.expand(b.devModeLayout, 500, null)
-                            }*/
                         }
                         .onNegative { _: MaterialDialog?, _: DialogAction? ->
+                            app.config.debugMode = false
+                            App.devMode = false
                             b.devMode.isChecked = app.config.debugMode
                             b.devMode.jumpDrawablesToCurrentState()
                             Anim.collapse(b.devMode, 1000, null)
@@ -117,6 +117,7 @@ class LoginChooserFragment : Fragment() {
                         .show()
             } else {
                 app.config.debugMode = false
+                App.devMode = false
                 /*if (b.devModeLayout.getVisibility() === View.VISIBLE) {
                     Anim.collapse(b.devModeTitle, 500, null)
                     Anim.collapse(b.devModeLayout, 500, null)

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/MessageFragment.kt

@@ -108,6 +108,10 @@ class MessageFragment : Fragment(), CoroutineScope {
                     .setNegativeButton(R.string.cancel, null)
                     .show()
         }
+        b.downloadButton.isVisible = App.debugMode
+        b.downloadButton.onClick {
+            EdziennikTask.messageGet(App.profileId, message).enqueue(activity)
+        }
 
         launch {
 
@@ -182,14 +186,16 @@ class MessageFragment : Fragment(), CoroutineScope {
             }
         }
 
-
-        // if a sent msg is not read by everyone, download it again to check the read status
-        if (!checkRecipients() && app.profile.loginStoreType != LoginStore.LOGIN_TYPE_VULCAN) {
-            EdziennikTask.messageGet(App.profileId, message).enqueue(activity)
-            return
+        val readByAll = checkRecipients()
+        if (app.profile.loginStoreType == LoginStore.LOGIN_TYPE_VULCAN) {
+            // vulcan: change message status or download attachments
+            if (message.type == TYPE_RECEIVED && !message.seen || message.attachmentIds == null) {
+                EdziennikTask.messageGet(App.profileId, message).enqueue(activity)
+                return
+            }
         }
-
-        if(message.type == TYPE_RECEIVED && !message.seen && app.profile.loginStoreType == LoginStore.LOGIN_TYPE_VULCAN) {
+        else if (!readByAll) {
+            // if a sent msg is not read by everyone, download it again to check the read status
             EdziennikTask.messageGet(App.profileId, message).enqueue(activity)
             return
         }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/settings/SettingsNewFragment.java

@@ -55,6 +55,7 @@ import pl.szczodrzynski.edziennik.ui.dialogs.changelog.ChangelogDialog;
 import pl.szczodrzynski.edziennik.ui.dialogs.settings.GradesConfigDialog;
 import pl.szczodrzynski.edziennik.ui.dialogs.settings.ProfileRemoveDialog;
 import pl.szczodrzynski.edziennik.ui.dialogs.sync.NotificationFilterDialog;
+import pl.szczodrzynski.edziennik.ui.modules.login.LoginActivity;
 import pl.szczodrzynski.edziennik.utils.Themes;
 import pl.szczodrzynski.edziennik.utils.Utils;
 import pl.szczodrzynski.edziennik.utils.models.Date;
@@ -161,7 +162,7 @@ public class SettingsNewFragment extends MaterialAboutFragment {
 
             profileCardTitleItem = new MaterialAboutProfileItem(
                     app.getProfile().getName(),
-                    getString(R.string.settings_profile_subtitle_format, app.getProfile().getSubname()),
+                    app.getProfile().getSubname(),
                     getProfileDrawable()
             );
             profileCardTitleItem.setOnClickAction(() -> {
@@ -218,6 +219,20 @@ public class SettingsNewFragment extends MaterialAboutFragment {
                     })
             );*/
 
+            items.add(
+                    new MaterialAboutActionItem(
+                            getString(R.string.settings_add_student_text),
+                            getString(R.string.settings_add_student_subtext),
+                            new IconicsDrawable(activity)
+                                    .icon(CommunityMaterial.Icon.cmd_account_plus_outline)
+                                    .size(IconicsSize.dp(iconSizeDp))
+                                    .color(IconicsColor.colorInt(iconColor))
+                    )
+                            .setOnClickAction(() -> {
+                                startActivity(new Intent(activity, LoginActivity.class));
+                            })
+            );
+
             items.add(
                     new MaterialAboutActionItem(
                             getString(R.string.settings_profile_notifications_text),
@@ -232,6 +247,20 @@ public class SettingsNewFragment extends MaterialAboutFragment {
                             })
             );
 
+            items.add(
+                    new MaterialAboutActionItem(
+                            getString(R.string.settings_profile_remove_text),
+                            getString(R.string.settings_profile_remove_subtext),
+                            new IconicsDrawable(activity)
+                                    .icon(SzkolnyFont.Icon.szf_delete_empty_outline)
+                                    .size(IconicsSize.dp(iconSizeDp))
+                                    .color(IconicsColor.colorInt(iconColor))
+                    )
+                            .setOnClickAction(() -> {
+                                new ProfileRemoveDialog(activity, app.getProfile().getId(), app.getProfile().getName());
+                            })
+            );
+
             items.add(getMoreItem(() -> addCardItems(CARD_PROFILE, getProfileCard(true))));
         }
         else {
@@ -253,20 +282,6 @@ public class SettingsNewFragment extends MaterialAboutFragment {
                             }))
             );
 
-            items.add(
-                    new MaterialAboutActionItem(
-                            getString(R.string.settings_profile_remove_text),
-                            getString(R.string.settings_profile_remove_subtext),
-                            new IconicsDrawable(activity)
-                                    .icon(SzkolnyFont.Icon.szf_delete_empty_outline)
-                                    .size(IconicsSize.dp(iconSizeDp))
-                                    .color(IconicsColor.colorInt(iconColor))
-                    )
-                    .setOnClickAction(() -> {
-                        new ProfileRemoveDialog(activity, app.getProfile().getId(), app.getProfile().getName());
-                    })
-            );
-
         }
         return items;
     }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/views/AttachmentAdapter.kt

@@ -58,8 +58,9 @@ class AttachmentAdapter(
         val item = items[position]
         val b = holder.b
 
+        val fileName = item.name.substringBefore(":http")
         // create an icon for the attachment
-        val icon: IIcon = when (Utils.getExtensionFromFileName(item.name)) {
+        val icon: IIcon = when (Utils.getExtensionFromFileName(fileName)) {
             "doc", "docx", "odt", "rtf" -> SzkolnyFont.Icon.szf_file_word_outline
             "xls", "xlsx", "ods" -> SzkolnyFont.Icon.szf_file_excel_outline
             "ppt", "pptx", "odp" -> SzkolnyFont.Icon.szf_file_powerpoint_outline
@@ -73,12 +74,12 @@ class AttachmentAdapter(
         }
 
         b.chip.text = if (item.isDownloading) {
-            app.getString(R.string.messages_attachment_downloading_format, item.name, item.downloadProgress)
+            app.getString(R.string.messages_attachment_downloading_format, fileName, item.downloadProgress)
         }
         else {
             item.size?.let {
-                app.getString(R.string.messages_attachment_format, item.name, Utils.readableFileSize(it))
-            } ?: item.name
+                app.getString(R.string.messages_attachment_format, fileName, Utils.readableFileSize(it))
+            } ?: fileName
         }
 
         b.chip.chipIcon = IconicsDrawable(context)

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/views/AttachmentsView.kt

@@ -8,12 +8,14 @@ import android.content.Context
 import android.os.Bundle
 import android.os.Environment
 import android.util.AttributeSet
+import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.PopupMenu
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import org.greenrobot.eventbus.EventBus
 import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
+import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.data.api.edziennik.EdziennikTask
 import pl.szczodrzynski.edziennik.data.api.events.AttachmentGetEvent
@@ -41,6 +43,8 @@ class AttachmentsView @JvmOverloads constructor(
     }
 
     fun init(arguments: Bundle, owner: Any) {
+        val app = context.applicationContext as App
+        val activity = context as? AppCompatActivity ?: return
         val list = this as? RecyclerView ?: return
 
         val profileId = arguments.get<Int>("profileId") ?: return
@@ -49,12 +53,16 @@ class AttachmentsView @JvmOverloads constructor(
         val attachmentSizes = arguments.getLongArray("attachmentSizes")
 
         val adapter = AttachmentAdapter(context, onAttachmentClick = { item ->
-            downloadAttachment(item)
+            app.permissionManager.requestStoragePermission(activity, R.string.permissions_attachment) {
+                downloadAttachment(item)
+            }
         }, onAttachmentLongClick = { chip, item ->
             val popupMenu = PopupMenu(chip.context, chip)
             popupMenu.menu.add(0, 1, 0, R.string.messages_attachment_download_again)
             popupMenu.setOnMenuItemClickListener {
-                downloadAttachment(item, forceDownload = true)
+                app.permissionManager.requestStoragePermission(activity, R.string.permissions_attachment) {
+                    downloadAttachment(item, forceDownload = true)
+                }
                 true
             }
             popupMenu.show()
@@ -86,7 +94,20 @@ class AttachmentsView @JvmOverloads constructor(
             try {
                 val attachmentFileName = Utils.getStringFromFile(attachmentDataFile)
                 val attachmentFile = File(attachmentFileName)
-                attachmentFile.exists()
+                // get the correct file name and update
+                if (attachmentFile.exists()) {
+
+                    // get the download url before updating file name
+                    val fileUrl = item.name.substringAfter(":", missingDelimiterValue = "")
+                    // update file name with the downloaded one
+                    item.name = attachmentFile.name
+                    // save the download url back
+                    if (fileUrl != "")
+                        item.name += ":$fileUrl"
+
+                    true
+                }
+                else false
             } catch (e: Exception) {
                 e.printStackTrace()
                 false
@@ -97,7 +118,8 @@ class AttachmentsView @JvmOverloads constructor(
 
     private fun downloadAttachment(attachment: AttachmentAdapter.Item, forceDownload: Boolean = false) {
         if (!forceDownload && attachment.isDownloaded) {
-            Utils.openFile(context, File(Utils.getStorageDir(), attachment.name))
+            // open file by name, or first part before ':' (Vulcan OneDrive)
+            Utils.openFile(context, File(Utils.getStorageDir(), attachment.name.substringBefore(":")))
             return
         }
 
@@ -128,17 +150,19 @@ class AttachmentsView @JvmOverloads constructor(
         when (event.eventType) {
             AttachmentGetEvent.TYPE_FINISHED -> {
                 // save the downloaded file name
-                attachment.downloadedName = event.fileName
                 attachment.isDownloading = false
                 attachment.isDownloaded = true
 
-                // update file name for iDziennik which
-                // does not provide the name before downloading
-                if (!attachment.name.contains("."))
-                    attachment.name = File(attachment.downloadedName).name
+                // get the download url before updating file name
+                val fileUrl = attachment.name.substringAfter(":", missingDelimiterValue = "")
+                // update file name with the downloaded one
+                attachment.name = File(event.fileName).name
+                // save the download url back
+                if (fileUrl != "")
+                    attachment.name += ":$fileUrl"
 
                 // open the file
-                Utils.openFile(context, File(Utils.getStorageDir(), attachment.name))
+                Utils.openFile(context, File(event.fileName))
             }
 
             AttachmentGetEvent.TYPE_PROGRESS -> {

app/src/main/java/pl/szczodrzynski/edziennik/utils/ProfileImageHolder.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-4-7.
+ */
+
+package pl.szczodrzynski.edziennik.utils
+
+import android.widget.ImageView
+import pl.szczodrzynski.navlib.ImageHolder
+
+class ProfileImageHolder(url: String) : ImageHolder(url) {
+
+    override fun applyTo(imageView: ImageView, tag: String?): Boolean {
+        return try {
+            super.applyTo(imageView, tag)
+        } catch (_: Exception) { false }
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/utils/managers/PermissionManager.kt

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-4-7.
+ */
+
+package pl.szczodrzynski.edziennik.utils.managers
+
+import android.Manifest
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.os.Build
+import android.provider.Settings
+import androidx.annotation.StringRes
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.qifan.powerpermission.coroutines.awaitAskPermissions
+import com.qifan.powerpermission.data.hasAllGranted
+import com.qifan.powerpermission.data.hasPermanentDenied
+import com.qifan.powerpermission.data.hasRational
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.R
+import kotlin.coroutines.CoroutineContext
+
+class PermissionManager(val app: App) : CoroutineScope {
+
+    private val job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    private fun isStoragePermissionGranted() = if (Build.VERSION.SDK_INT >= 23) {
+        app.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
+    } else {
+        true
+    }
+
+    fun requestStoragePermission(
+            activity: AppCompatActivity,
+            @StringRes permissionMessage: Int,
+            onSuccess: suspend CoroutineScope.() -> Unit
+    ) {
+        launch {
+            if (isStoragePermissionGranted()) {
+                onSuccess()
+                return@launch
+            }
+            val result = activity.awaitAskPermissions(Manifest.permission.WRITE_EXTERNAL_STORAGE)
+            when {
+                result.hasAllGranted() -> onSuccess()
+                result.hasRational() -> {
+                    MaterialAlertDialogBuilder(activity)
+                            .setTitle(R.string.permissions_required)
+                            .setMessage(permissionMessage)
+                            .setPositiveButton(R.string.ok) { _, _ ->
+                                requestStoragePermission(activity, permissionMessage, onSuccess)
+                            }
+                            .setNegativeButton(R.string.cancel, null)
+                            .show()
+                }
+                result.hasPermanentDenied() -> {
+                    MaterialAlertDialogBuilder(activity)
+                            .setTitle(R.string.permissions_required)
+                            .setMessage(R.string.permissions_denied)
+                            .setPositiveButton(R.string.ok) { _, _ ->
+                                val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
+                                val uri = Uri.fromParts("package", app.packageName, null)
+                                intent.data = uri
+                                activity.startActivity(intent)
+                            }
+                            .setNegativeButton(R.string.cancel, null)
+                            .show()
+                }
+            }
+        }
+    }
+}

app/src/main/res/layout/lab_fragment.xml

@@ -47,6 +47,13 @@
                 android:layout_height="wrap_content"
                 android:text="Duh rodo button"
                 android:textAllCaps="false" />
+
+            <Button
+                android:id="@+id/removeHomework"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="Remove all homework body (null)"
+                android:textAllCaps="false" />
         </LinearLayout>
     </ScrollView>
 </layout>

app/src/main/res/layout/message_fragment.xml

@@ -295,6 +295,39 @@
                             android:textAppearance="@style/NavView.TextView.Small" />
 
                     </LinearLayout>
+
+                    <LinearLayout
+                        android:id="@+id/downloadButton"
+                        android:layout_width="match_parent"
+                        android:layout_height="match_parent"
+                        android:layout_marginLeft="4dp"
+                        android:layout_marginRight="4dp"
+                        android:layout_weight="1"
+                        android:background="@drawable/bg_rounded_ripple"
+                        android:gravity="center"
+                        android:orientation="vertical"
+                        android:paddingLeft="4dp"
+                        android:paddingTop="8dp"
+                        android:paddingRight="4dp"
+                        android:paddingBottom="8dp"
+                        android:visibility="visible">
+
+                        <com.mikepenz.iconics.view.IconicsImageView
+                            android:layout_width="24dp"
+                            android:layout_height="24dp"
+                            android:padding="4dp"
+                            app:iiv_color="?android:textColorSecondary"
+                            app:iiv_icon="cmd-download-outline"
+                            tools:srcCompat="@android:drawable/ic_menu_delete" />
+
+                        <TextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:gravity="center"
+                            android:text="Pobierz ponownie"
+                            android:textAppearance="@style/NavView.TextView.Small" />
+
+                    </LinearLayout>
                 </LinearLayout>
             </LinearLayout>
         </ScrollView>

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

@@ -128,6 +128,7 @@
     <string name="error_340" translatable="false">ERROR_VULCAN_API_MAINTENANCE</string>
     <string name="error_341" translatable="false">ERROR_VULCAN_API_BAD_REQUEST</string>
     <string name="error_342" translatable="false">ERROR_VULCAN_API_OTHER</string>
+    <string name="error_343" translatable="false">ERROR_VULCAN_ATTACHMENT_DOWNLOAD</string>
 
     <string name="error_401" translatable="false">ERROR_LOGIN_IDZIENNIK_WEB_INVALID_LOGIN</string>
     <string name="error_402" translatable="false">ERROR_LOGIN_IDZIENNIK_WEB_INVALID_SCHOOL_NAME</string>
@@ -177,6 +178,7 @@
     <string name="error_914" translatable="false">EXCEPTION_IDZIENNIK_API_REQUEST</string>
     <string name="error_920" translatable="false">EXCEPTION_EDUDZIENNIK_WEB_REQUEST</string>
     <string name="error_921" translatable="false">EXCEPTION_EDUDZIENNIK_FILE_REQUEST</string>
+    <string name="error_930" translatable="false">ERROR_ONEDRIVE_DOWNLOAD</string>
 
     <string name="error_1201" translatable="false">LOGIN_NO_ARGUMENTS</string>
 
@@ -246,7 +248,7 @@
     <string name="error_157_reason">Brak ID sesji Wiadomości</string>
     <string name="error_158_reason">Odmowa dostępu do Portalu Librus</string>
     <string name="error_159_reason">API Portalu Librus wyłączone</string>
-    <string name="error_160_reason">Konto Synergia zostało rozłączone</string>
+    <string name="error_160_reason">Konto LIBRUS utraciło połączenie z kontem Synergia. Zaloguj się na stronie portal.librus.pl lub w oficjalnej aplikacji Librus i postępuj zgodnie z instrukcją, aby naprawić konto.</string>
     <string name="error_161_reason">Inny błąd Portalu Librus</string>
     <string name="error_162_reason">Nie znaleziono konta Synergia. Zaloguj się na stronie portal.librus.pl, a następnie powiąż swoje konto Synergia do konta Librus Portal.</string>
     <string name="error_163_reason">Inny błąd logowania do Portalu Librus</string>
@@ -304,6 +306,7 @@
     <string name="error_340_reason">Vulcan: przerwa techniczna</string>
     <string name="error_341_reason">Vulcan: błąd żądania, zgłoś błąd</string>
     <string name="error_342_reason">Vulcan: inny błąd, wyślij zgłoszenie</string>
+    <string name="error_343_reason">Vulcan: nie znaleziono adresu załącznika</string>
 
     <string name="error_401_reason">Nieprawidłowe dane logowania</string>
     <string name="error_402_reason">Nieprawidłowa nazwa szkoły</string>
@@ -353,6 +356,7 @@
     <string name="error_914_reason">EXCEPTION_IDZIENNIK_API_REQUEST</string>
     <string name="error_920_reason">Wystąpił błąd</string>
     <string name="error_921_reason">Wystąpił błąd podczas pobierania pliku</string>
+    <string name="error_930_reason">Nie udało się pobrać pliku z OneDrive</string>
 
     <string name="error_1201_reason">Nie podano parametrów</string>
 </resources>

build.gradle

@@ -5,8 +5,8 @@ buildscript {
         kotlin_version = '1.3.61'
 
         release = [
-                versionName: "4.0-rc.5",
-                versionCode: 4000059
+                versionName: "4.0",
+                versionCode: 4000099
         ]
 
         setup = [
@@ -87,6 +87,7 @@ allprojects {
         maven { url 'https://jitpack.io' }
         maven { url "https://kotlin.bintray.com/kotlinx/" }
         maven { url "https://dl.bintray.com/wulkanowy/wulkanowy" }
+        maven { url "https://dl.bintray.com/undervoid/PowerPermission" }
     }
 }
 

mhttp/src/main/java/im/wangchao/mhttp/callback/FileCallbackHandler.java

@@ -6,6 +6,7 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.net.URLDecoder;
 
 import im.wangchao.mhttp.AbsCallbackHandler;
 import im.wangchao.mhttp.Accept;
@@ -69,7 +70,11 @@ public class FileCallbackHandler extends AbsCallbackHandler<File> {
         if (this.file.isDirectory()) {
             String contentDisposition = response.header("content-disposition");
             if (contentDisposition != null) {
-                String filename = contentDisposition.substring(contentDisposition.indexOf("\"")+1, contentDisposition.lastIndexOf("\""));
+                if (contentDisposition.contains("*=UTF-8")) {
+                    contentDisposition = contentDisposition.replace("*=UTF-8''", "\"") + "\"";
+                    contentDisposition = URLDecoder.decode(contentDisposition, "UTF-8");
+                }
+                String filename = contentDisposition.substring(contentDisposition.indexOf("\"") + 1, contentDisposition.lastIndexOf("\""));
                 this.file = new File(file, filename);
                 file = this.file;
             }