Convert DM managers to kotlin

app/src/main/java/awais/instagrabber/fragments/main/ProfileFragment.java

@@ -1088,7 +1088,7 @@ public class ProfileFragment extends Fragment implements SwipeRefreshLayout.OnRe
                             Toast.makeText(context, R.string.downloader_unknown_error, Toast.LENGTH_SHORT).show();
                             return;
                         }
-                        final InboxManager inboxManager = DirectMessagesManager.getInstance().getInboxManager();
+                        final InboxManager inboxManager = DirectMessagesManager.INSTANCE.getInboxManager();
                         final DirectThread thread = response.body();
                         if (!inboxManager.containsThread(thread.getThreadId())) {
                             thread.setTemp(true);

app/src/main/java/awais/instagrabber/managers/DirectMessagesManager.kt

@@ -1,275 +1,222 @@
-package awais.instagrabber.managers;
-
-import android.content.ContentResolver;
-import android.util.Log;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-
-import com.google.common.collect.Iterables;
-
-import java.io.IOException;
-import java.util.Collections;
-import java.util.List;
-import java.util.Locale;
-import java.util.Set;
-import java.util.UUID;
-import java.util.function.Function;
-
-import awais.instagrabber.models.Resource;
-import awais.instagrabber.repositories.requests.directmessages.ThreadIdOrUserIds;
-import awais.instagrabber.repositories.responses.User;
-import awais.instagrabber.repositories.responses.directmessages.DirectItem;
-import awais.instagrabber.repositories.responses.directmessages.DirectThread;
-import awais.instagrabber.repositories.responses.directmessages.DirectThreadBroadcastResponse;
-import awais.instagrabber.repositories.responses.directmessages.RankedRecipient;
-import awais.instagrabber.utils.Constants;
-import awais.instagrabber.utils.CookieUtils;
-import awais.instagrabber.webservices.DirectMessagesService;
-import retrofit2.Call;
-import retrofit2.Callback;
-import retrofit2.Response;
-
-import static awais.instagrabber.utils.Utils.settingsHelper;
-
-public final class DirectMessagesManager {
-    private static final String TAG = DirectMessagesManager.class.getSimpleName();
-    private static final Object LOCK = new Object();
-
-    private static DirectMessagesManager instance;
-
-    private final InboxManager inboxManager;
-    private final InboxManager pendingInboxManager;
-
-    private DirectMessagesService service;
-
-    public static DirectMessagesManager getInstance() {
-        if (instance == null) {
-            synchronized (LOCK) {
-                if (instance == null) {
-                    instance = new DirectMessagesManager();
-                }
-            }
-        }
-        return instance;
-    }
-
-    private DirectMessagesManager() {
-        inboxManager = InboxManager.getInstance(false);
-        pendingInboxManager = InboxManager.getInstance(true);
-        final String cookie = settingsHelper.getString(Constants.COOKIE);
-        final long viewerId = CookieUtils.getUserIdFromCookie(cookie);
-        final String deviceUuid = settingsHelper.getString(Constants.DEVICE_UUID);
-        final String csrfToken = CookieUtils.getCsrfTokenFromCookie(cookie);
-        if (csrfToken == null) return;
-        service = DirectMessagesService.getInstance(csrfToken, viewerId, deviceUuid);
-    }
-
-    public void moveThreadFromPending(@NonNull final String threadId) {
-        final List<DirectThread> pendingThreads = pendingInboxManager.getThreads().getValue();
-        if (pendingThreads == null) return;
-        final int index = Iterables.indexOf(pendingThreads, t -> t != null && t.getThreadId().equals(threadId));
-        if (index < 0) return;
-        final DirectThread thread = pendingThreads.get(index);
-        final DirectItem threadFirstDirectItem = thread.getFirstDirectItem();
-        if (threadFirstDirectItem == null) return;
-        final List<DirectThread> threads = inboxManager.getThreads().getValue();
-        int insertIndex = 0;
+package awais.instagrabber.managers
+
+import android.content.ContentResolver
+import android.util.Log
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import awais.instagrabber.managers.ThreadManager.Companion.getInstance
+import awais.instagrabber.models.Resource
+import awais.instagrabber.models.Resource.Companion.error
+import awais.instagrabber.models.Resource.Companion.loading
+import awais.instagrabber.models.Resource.Companion.success
+import awais.instagrabber.repositories.requests.directmessages.ThreadIdOrUserIds.Companion.of
+import awais.instagrabber.repositories.responses.User
+import awais.instagrabber.repositories.responses.directmessages.DirectThread
+import awais.instagrabber.repositories.responses.directmessages.DirectThreadBroadcastResponse
+import awais.instagrabber.repositories.responses.directmessages.RankedRecipient
+import awais.instagrabber.utils.Constants
+import awais.instagrabber.utils.Utils
+import awais.instagrabber.utils.getCsrfTokenFromCookie
+import awais.instagrabber.utils.getUserIdFromCookie
+import awais.instagrabber.webservices.DirectMessagesService
+import awais.instagrabber.webservices.DirectMessagesService.Companion.getInstance
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+import java.io.IOException
+import java.util.*
+
+object DirectMessagesManager {
+    val inboxManager: InboxManager by lazy { InboxManager.getInstance(false) }
+    val pendingInboxManager: InboxManager by lazy { InboxManager.getInstance(true) }
+
+    private val TAG = DirectMessagesManager::class.java.simpleName
+    private val viewerId: Long
+    private val deviceUuid: String
+    private val csrfToken: String
+    private val service: DirectMessagesService
+
+    fun moveThreadFromPending(threadId: String) {
+        val pendingThreads = pendingInboxManager.threads.value ?: return
+        val index = pendingThreads.indexOfFirst { it.threadId == threadId }
+        if (index < 0) return
+        val thread = pendingThreads[index]
+        val threadFirstDirectItem = thread.firstDirectItem ?: return
+        val threads = inboxManager.threads.value
+        var insertIndex = 0
         if (threads != null) {
-            for (final DirectThread tempThread : threads) {
-                final DirectItem firstDirectItem = tempThread.getFirstDirectItem();
-                if (firstDirectItem == null) continue;
-                final long timestamp = firstDirectItem.getTimestamp();
+            for (tempThread in threads) {
+                val firstDirectItem = tempThread.firstDirectItem ?: continue
+                val timestamp = firstDirectItem.getTimestamp()
                 if (timestamp < threadFirstDirectItem.getTimestamp()) {
-                    break;
+                    break
                 }
-                insertIndex++;
+                insertIndex++
             }
         }
-        thread.setPending(false);
-        inboxManager.addThread(thread, insertIndex);
-        pendingInboxManager.removeThread(threadId);
-        final Integer currentTotal = inboxManager.getPendingRequestsTotal().getValue();
-        if (currentTotal == null) return;
-        inboxManager.setPendingRequestsTotal(currentTotal - 1);
-    }
-
-    public InboxManager getInboxManager() {
-        return inboxManager;
+        thread.pending = false
+        inboxManager.addThread(thread, insertIndex)
+        pendingInboxManager.removeThread(threadId)
+        val currentTotal = inboxManager.getPendingRequestsTotal().value ?: return
+        inboxManager.setPendingRequestsTotal(currentTotal - 1)
     }
 
-    public InboxManager getPendingInboxManager() {
-        return pendingInboxManager;
+    fun getThreadManager(
+        threadId: String,
+        pending: Boolean,
+        currentUser: User,
+        contentResolver: ContentResolver,
+    ): ThreadManager {
+        return getInstance(threadId, pending, currentUser, contentResolver, viewerId, csrfToken, deviceUuid)
     }
 
-    public ThreadManager getThreadManager(@NonNull final String threadId,
-                                          final boolean pending,
-                                          @NonNull final User currentUser,
-                                          @NonNull final ContentResolver contentResolver) {
-        return ThreadManager.getInstance(threadId, pending, currentUser, contentResolver);
-    }
-
-    public void createThread(final long userPk,
-                             @Nullable final Function<DirectThread, Void> callback) {
-        if (service == null) return;
-        final Call<DirectThread> createThreadRequest = service.createThread(Collections.singletonList(userPk), null);
-        createThreadRequest.enqueue(new Callback<DirectThread>() {
-            @Override
-            public void onResponse(@NonNull final Call<DirectThread> call, @NonNull final Response<DirectThread> response) {
-                if (!response.isSuccessful()) {
-                    if (response.errorBody() != null) {
+    fun createThread(
+        userPk: Long,
+        callback: ((DirectThread) -> Unit)?,
+    ) {
+        val createThreadRequest = service.createThread(listOf(userPk), null)
+        createThreadRequest.enqueue(object : Callback<DirectThread?> {
+            override fun onResponse(call: Call<DirectThread?>, response: Response<DirectThread?>) {
+                if (!response.isSuccessful) {
+                    val errorBody = response.errorBody()
+                    if (errorBody != null) {
                         try {
-                            final String string = response.errorBody().string();
-                            final String msg = String.format(Locale.US,
+                            val string = errorBody.string()
+                            val msg = String.format(Locale.US,
                                 "onResponse: url: %s, responseCode: %d, errorBody: %s",
                                 call.request().url().toString(),
                                 response.code(),
-                                                             string);
-                            Log.e(TAG, msg);
-                        } catch (IOException e) {
-                            Log.e(TAG, "onResponse: ", e);
+                                string)
+                            Log.e(TAG, msg)
+                        } catch (e: IOException) {
+                            Log.e(TAG, "onResponse: ", e)
                         }
-                        return;
+                        return
                     }
-                    Log.e(TAG, "onResponse: request was not successful and response error body was null");
-                    return;
+                    Log.e(TAG, "onResponse: request was not successful and response error body was null")
+                    return
                 }
-                final DirectThread thread = response.body();
+                val thread = response.body()
                 if (thread == null) {
-                    Log.e(TAG, "onResponse: thread is null");
-                    return;
-                }
-                if (callback != null) {
-                    callback.apply(thread);
+                    Log.e(TAG, "onResponse: thread is null")
+                    return
                 }
+                callback?.invoke(thread)
             }
 
-            @Override
-            public void onFailure(@NonNull final Call<DirectThread> call, @NonNull final Throwable t) {
-
-            }
-        });
+            override fun onFailure(call: Call<DirectThread?>, t: Throwable) {}
+        })
     }
 
-    public void sendMedia(@NonNull final Set<RankedRecipient> recipients, final String mediaId) {
-        final int[] resultsCount = {0};
-        final Function<Void, Void> callback = unused -> {
-            resultsCount[0]++;
-            if (resultsCount[0] == recipients.size()) {
-                inboxManager.refresh();
+    fun sendMedia(recipients: Set<RankedRecipient>, mediaId: String) {
+        val resultsCount = intArrayOf(0)
+        val callback: () -> Unit = {
+            resultsCount[0]++
+            if (resultsCount[0] == recipients.size) {
+                inboxManager.refresh()
             }
-            return null;
-        };
-        for (final RankedRecipient recipient : recipients) {
-            if (recipient == null) continue;
-            sendMedia(recipient, mediaId, false, callback);
+        }
+        for (recipient in recipients) {
+            sendMedia(recipient, mediaId, false, callback)
         }
     }
 
-    public void sendMedia(@NonNull final RankedRecipient recipient, final String mediaId) {
-        sendMedia(recipient, mediaId, true, null);
+    fun sendMedia(recipient: RankedRecipient, mediaId: String) {
+        sendMedia(recipient, mediaId, true, null)
     }
 
-    private void sendMedia(@NonNull final RankedRecipient recipient,
-                           @NonNull final String mediaId,
-                           final boolean refreshInbox,
-                           @Nullable final Function<Void, Void> callback) {
-        if (recipient.getThread() == null && recipient.getUser() != null) {
+    private fun sendMedia(
+        recipient: RankedRecipient,
+        mediaId: String,
+        refreshInbox: Boolean,
+        callback: (() -> Unit)?,
+    ) {
+        if (recipient.thread == null && recipient.user != null) {
             // create thread and forward
-            createThread(recipient.getUser().getPk(), directThread -> {
-                sendMedia(directThread, mediaId, unused -> {
+            createThread(recipient.user.pk) { (threadId) ->
+                val threadIdTemp = threadId ?: return@createThread
+                sendMedia(threadIdTemp, mediaId) {
                     if (refreshInbox) {
-                        inboxManager.refresh();
+                        inboxManager.refresh()
+                    }
+                    callback?.invoke()
                 }
-                    if (callback != null) {
-                        callback.apply(null);
             }
-                    return null;
-                });
-                return null;
-            });
         }
-        if (recipient.getThread() == null) return;
+        if (recipient.thread == null) return
         // just forward
-        final DirectThread thread = recipient.getThread();
-        sendMedia(thread, mediaId, unused -> {
+        val thread = recipient.thread
+        val threadId = thread.threadId ?: return
+        sendMedia(threadId, mediaId) {
             if (refreshInbox) {
-                inboxManager.refresh();
+                inboxManager.refresh()
             }
-            if (callback != null) {
-                callback.apply(null);
+            callback?.invoke()
         }
-            return null;
-        });
     }
 
-    @NonNull
-    public LiveData<Resource<Object>> sendMedia(@NonNull final DirectThread thread,
-                                                @NonNull final String mediaId,
-                                                @Nullable final Function<Void, Void> callback) {
-        return sendMedia(thread.getThreadId(), mediaId, callback);
-    }
-
-    @NonNull
-    public LiveData<Resource<Object>> sendMedia(@NonNull final String threadId,
-                                                @NonNull final String mediaId,
-                                                @Nullable final Function<Void, Void> callback) {
-        final MutableLiveData<Resource<Object>> data = new MutableLiveData<>();
-        data.postValue(Resource.loading(null));
-        final Call<DirectThreadBroadcastResponse> request = service.broadcastMediaShare(
+    private fun sendMedia(
+        threadId: String,
+        mediaId: String,
+        callback: (() -> Unit)?,
+    ): LiveData<Resource<Any?>> {
+        val data = MutableLiveData<Resource<Any?>>()
+        data.postValue(loading(null))
+        val request = service.broadcastMediaShare(
             UUID.randomUUID().toString(),
-                ThreadIdOrUserIds.of(threadId),
+            of(threadId),
             mediaId
-        );
-        request.enqueue(new Callback<DirectThreadBroadcastResponse>() {
-            @Override
-            public void onResponse(@NonNull final Call<DirectThreadBroadcastResponse> call,
-                                   @NonNull final Response<DirectThreadBroadcastResponse> response) {
-                if (response.isSuccessful()) {
-                    data.postValue(Resource.success(new Object()));
-                    if (callback != null) {
-                        callback.apply(null);
-                    }
-                    return;
-                }
-                if (response.errorBody() != null) {
+        )
+        request.enqueue(object : Callback<DirectThreadBroadcastResponse?> {
+            override fun onResponse(
+                call: Call<DirectThreadBroadcastResponse?>,
+                response: Response<DirectThreadBroadcastResponse?>,
+            ) {
+                if (response.isSuccessful) {
+                    data.postValue(success(Any()))
+                    callback?.invoke()
+                    return
+                }
+                val errorBody = response.errorBody()
+                if (errorBody != null) {
                     try {
-                        final String string = response.errorBody().string();
-                        final String msg = String.format(Locale.US,
+                        val string = errorBody.string()
+                        val msg = String.format(Locale.US,
                             "onResponse: url: %s, responseCode: %d, errorBody: %s",
                             call.request().url().toString(),
                             response.code(),
-                                                         string);
-                        Log.e(TAG, msg);
-                        data.postValue(Resource.error(msg, null));
-                    } catch (IOException e) {
-                        Log.e(TAG, "onResponse: ", e);
-                        data.postValue(Resource.error(e.getMessage(), null));
-                    }
-                    if (callback != null) {
-                        callback.apply(null);
-                    }
-                    return;
-                }
-                final String msg = "onResponse: request was not successful and response error body was null";
-                Log.e(TAG, msg);
-                data.postValue(Resource.error(msg, null));
-                if (callback != null) {
-                    callback.apply(null);
-                }
-            }
-
-            @Override
-            public void onFailure(@NonNull final Call<DirectThreadBroadcastResponse> call, @NonNull final Throwable t) {
-                Log.e(TAG, "onFailure: ", t);
-                data.postValue(Resource.error(t.getMessage(), null));
-                if (callback != null) {
-                    callback.apply(null);
-                }
-            }
-        });
-        return data;
+                            string)
+                        Log.e(TAG, msg)
+                        data.postValue(error(msg, null))
+                    } catch (e: IOException) {
+                        Log.e(TAG, "onResponse: ", e)
+                        data.postValue(error(e.message, null))
+                    }
+                    callback?.invoke()
+                    return
+                }
+                val msg = "onResponse: request was not successful and response error body was null"
+                Log.e(TAG, msg)
+                data.postValue(error(msg, null))
+                callback?.invoke()
+            }
+
+            override fun onFailure(call: Call<DirectThreadBroadcastResponse?>, t: Throwable) {
+                Log.e(TAG, "onFailure: ", t)
+                data.postValue(error(t.message, null))
+                callback?.invoke()
+            }
+        })
+        return data
+    }
+
+    init {
+        val cookie = Utils.settingsHelper.getString(Constants.COOKIE)
+        viewerId = getUserIdFromCookie(cookie)
+        deviceUuid = Utils.settingsHelper.getString(Constants.DEVICE_UUID)
+        val csrfToken = getCsrfTokenFromCookie(cookie)
+        require(!csrfToken.isNullOrBlank() && viewerId != 0L && deviceUuid.isNotBlank()) { "User is not logged in!" }
+        this.csrfToken = csrfToken
+        service = getInstance(csrfToken, viewerId, deviceUuid)
     }
 }

app/src/main/java/awais/instagrabber/managers/InboxManager.kt

@@ -1,382 +1,349 @@
-package awais.instagrabber.managers;
-
-import android.util.Log;
-
-import androidx.annotation.NonNull;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.Transformations;
-
-import com.google.common.cache.CacheBuilder;
-import com.google.common.cache.CacheLoader;
-import com.google.common.cache.LoadingCache;
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.Iterables;
-
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Objects;
-import java.util.concurrent.TimeUnit;
-import java.util.stream.Collectors;
-
-import awais.instagrabber.R;
-import awais.instagrabber.models.Resource;
-import awais.instagrabber.repositories.responses.User;
-import awais.instagrabber.repositories.responses.directmessages.DirectBadgeCount;
-import awais.instagrabber.repositories.responses.directmessages.DirectInbox;
-import awais.instagrabber.repositories.responses.directmessages.DirectInboxResponse;
-import awais.instagrabber.repositories.responses.directmessages.DirectItem;
-import awais.instagrabber.repositories.responses.directmessages.DirectThread;
-import awais.instagrabber.utils.Constants;
-import awais.instagrabber.utils.CookieUtils;
-import awais.instagrabber.utils.TextUtils;
-import awais.instagrabber.webservices.DirectMessagesService;
-import retrofit2.Call;
-import retrofit2.Callback;
-import retrofit2.Response;
-
-import static androidx.lifecycle.Transformations.distinctUntilChanged;
-import static awais.instagrabber.utils.Utils.settingsHelper;
-
-public final class InboxManager {
-    private static final String TAG = InboxManager.class.getSimpleName();
-    private static final LoadingCache<String, Object> THREAD_LOCKS = CacheBuilder
-            .newBuilder()
-            .expireAfterAccess(1, TimeUnit.MINUTES) // max lock time ever expected
-            .build(CacheLoader.from(Object::new));
-    private static final Comparator<DirectThread> THREAD_COMPARATOR = (t1, t2) -> {
-        final DirectItem t1FirstDirectItem = t1.getFirstDirectItem();
-        final DirectItem t2FirstDirectItem = t2.getFirstDirectItem();
-        if (t1FirstDirectItem == null && t2FirstDirectItem == null) return 0;
-        if (t1FirstDirectItem == null) return 1;
-        if (t2FirstDirectItem == null) return -1;
-        return Long.compare(t2FirstDirectItem.getTimestamp(), t1FirstDirectItem.getTimestamp());
-    };
-
-    private final MutableLiveData<Resource<DirectInbox>> inbox = new MutableLiveData<>();
-    private final MutableLiveData<Resource<Integer>> unseenCount = new MutableLiveData<>();
-    private final MutableLiveData<Integer> pendingRequestsTotal = new MutableLiveData<>(0);
-
-    private final LiveData<List<DirectThread>> threads;
-    private final DirectMessagesService service;
-    private final boolean pending;
-
-    private Call<DirectInboxResponse> inboxRequest;
-    private Call<DirectBadgeCount> unseenCountRequest;
-    private long seqId;
-    private String cursor;
-    private boolean hasOlder = true;
-    private User viewer;
-
-    @NonNull
-    public static InboxManager getInstance(final boolean pending) {
-        return new InboxManager(pending);
-    }
-
-    private InboxManager(final boolean pending) {
-        this.pending = pending;
-        final String cookie = settingsHelper.getString(Constants.COOKIE);
-        final long userId = CookieUtils.getUserIdFromCookie(cookie);
-        final String deviceUuid = settingsHelper.getString(Constants.DEVICE_UUID);
-        final String csrfToken = CookieUtils.getCsrfTokenFromCookie(cookie);
-        if (TextUtils.isEmpty(csrfToken)) {
-            throw new IllegalArgumentException("csrfToken is empty!");
-        } else if (userId == 0) {
-            throw new IllegalArgumentException("user id invalid");
-        } else if (TextUtils.isEmpty(deviceUuid)) {
-            throw new IllegalArgumentException("device uuid is empty!");
-        }
-        service = DirectMessagesService.getInstance(csrfToken, userId, deviceUuid);
-
-        // Transformations
-        threads = distinctUntilChanged(Transformations.map(inbox, inboxResource -> {
-            if (inboxResource == null) {
-                return Collections.emptyList();
+package awais.instagrabber.managers
+
+import android.util.Log
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.Transformations
+import awais.instagrabber.R
+import awais.instagrabber.models.Resource
+import awais.instagrabber.models.Resource.Companion.error
+import awais.instagrabber.models.Resource.Companion.loading
+import awais.instagrabber.models.Resource.Companion.success
+import awais.instagrabber.repositories.responses.User
+import awais.instagrabber.repositories.responses.directmessages.*
+import awais.instagrabber.utils.Constants
+import awais.instagrabber.utils.Utils
+import awais.instagrabber.utils.getCsrfTokenFromCookie
+import awais.instagrabber.utils.getUserIdFromCookie
+import awais.instagrabber.webservices.DirectMessagesService
+import awais.instagrabber.webservices.DirectMessagesService.Companion.getInstance
+import com.google.common.cache.CacheBuilder
+import com.google.common.cache.CacheLoader
+import com.google.common.collect.ImmutableList
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+import java.util.*
+import java.util.concurrent.TimeUnit
+
+class InboxManager private constructor(private val pending: Boolean) {
+    private val inbox = MutableLiveData<Resource<DirectInbox?>>()
+    private val unseenCount = MutableLiveData<Resource<Int?>>()
+    private val pendingRequestsTotal = MutableLiveData(0)
+    val threads: LiveData<List<DirectThread>>
+    private val service: DirectMessagesService
+    private var inboxRequest: Call<DirectInboxResponse?>? = null
+    private var unseenCountRequest: Call<DirectBadgeCount?>? = null
+    private var seqId: Long = 0
+    private var cursor: String? = null
+    private var hasOlder = true
+    var viewer: User? = null
+        private set
+
+    fun getInbox(): LiveData<Resource<DirectInbox?>> {
+        return Transformations.distinctUntilChanged(inbox)
+    }
+
+    fun getUnseenCount(): LiveData<Resource<Int?>> {
+        return Transformations.distinctUntilChanged(unseenCount)
+    }
+
+    fun getPendingRequestsTotal(): LiveData<Int> {
+        return Transformations.distinctUntilChanged(pendingRequestsTotal)
+    }
+
+    fun fetchInbox() {
+        val inboxResource = inbox.value
+        if (inboxResource != null && inboxResource.status === Resource.Status.LOADING || !hasOlder) return
+        stopCurrentInboxRequest()
+        inbox.postValue(loading(currentDirectInbox))
+        inboxRequest = if (pending) service.fetchPendingInbox(cursor, seqId) else service.fetchInbox(cursor, seqId)
+        inboxRequest?.enqueue(object : Callback<DirectInboxResponse?> {
+            override fun onResponse(call: Call<DirectInboxResponse?>, response: Response<DirectInboxResponse?>) {
+                val body = response.body()
+                if (body == null) {
+                    Log.e(TAG, "parseInboxResponse: Response is null")
+                    inbox.postValue(error(R.string.generic_null_response, currentDirectInbox))
+                    hasOlder = false
+                    return
+                }
+                parseInboxResponse(body)
+            }
+
+            override fun onFailure(call: Call<DirectInboxResponse?>, t: Throwable) {
+                Log.e(TAG, "Failed fetching dm inbox", t)
+                inbox.postValue(error(t.message, currentDirectInbox))
+                hasOlder = false
+            }
+        })
+    }
+
+    fun fetchUnseenCount() {
+        val unseenCountResource = unseenCount.value
+        if (unseenCountResource != null && unseenCountResource.status === Resource.Status.LOADING) return
+        stopCurrentUnseenCountRequest()
+        unseenCount.postValue(loading(currentUnseenCount))
+        unseenCountRequest = service.fetchUnseenCount()
+        unseenCountRequest?.enqueue(object : Callback<DirectBadgeCount?> {
+            override fun onResponse(call: Call<DirectBadgeCount?>, response: Response<DirectBadgeCount?>) {
+                val directBadgeCount = response.body()
+                if (directBadgeCount == null) {
+                    Log.e(TAG, "onResponse: directBadgeCount Response is null")
+                    unseenCount.postValue(error(R.string.dms_inbox_error_null_count, currentUnseenCount))
+                    return
                 }
-            final DirectInbox inbox = inboxResource.data;
-            if (inbox == null) {
-                return Collections.emptyList();
+                unseenCount.postValue(success(directBadgeCount.badgeCount))
             }
-            return ImmutableList.sortedCopyOf(THREAD_COMPARATOR, inbox.getThreads());
-        }));
 
-        fetchInbox();
-        if (!pending) {
-            fetchUnseenCount();
+            override fun onFailure(call: Call<DirectBadgeCount?>, t: Throwable) {
+                Log.e(TAG, "Failed fetching unseen count", t)
+                unseenCount.postValue(error(t.message, currentUnseenCount))
             }
+        })
     }
 
-    public LiveData<Resource<DirectInbox>> getInbox() {
-        return distinctUntilChanged(inbox);
+    fun refresh() {
+        cursor = null
+        seqId = 0
+        hasOlder = true
+        fetchInbox()
+        if (!pending) {
+            fetchUnseenCount()
         }
-
-    public LiveData<List<DirectThread>> getThreads() {
-        return threads;
     }
 
-    public LiveData<Resource<Integer>> getUnseenCount() {
-        return distinctUntilChanged(unseenCount);
+    private val currentDirectInbox: DirectInbox?
+        get() {
+            val inboxResource = inbox.value
+            return inboxResource?.data
         }
 
-    public LiveData<Integer> getPendingRequestsTotal() {
-        return distinctUntilChanged(pendingRequestsTotal);
+    private fun parseInboxResponse(response: DirectInboxResponse) {
+        if (response.status != "ok") {
+            Log.e(TAG, "DM inbox fetch response: status not ok")
+            inbox.postValue(error(R.string.generic_not_ok_response, currentDirectInbox))
+            hasOlder = false
+            return
         }
-
-    public User getViewer() {
-        return viewer;
+        seqId = response.seqId
+        if (viewer == null) {
+            viewer = response.viewer
+        }
+        val inbox = response.inbox ?: return
+        if (!cursor.isNullOrBlank()) {
+            val currentDirectInbox = currentDirectInbox
+            currentDirectInbox?.let {
+                val threads = it.threads
+                val threadsCopy = if (threads == null) LinkedList() else LinkedList(threads)
+                threadsCopy.addAll(inbox.threads ?: emptyList())
+                inbox.threads = threads
+            }
+        }
+        this.inbox.postValue(success(inbox))
+        cursor = inbox.oldestCursor
+        hasOlder = inbox.hasOlder
+        pendingRequestsTotal.postValue(response.pendingRequestsTotal)
+    }
+
+    fun setThread(
+        threadId: String,
+        thread: DirectThread,
+    ) {
+        val inbox = currentDirectInbox ?: return
+        val index = getThreadIndex(threadId, inbox)
+        setThread(inbox, index, thread)
+    }
+
+    private fun setThread(
+        inbox: DirectInbox,
+        index: Int,
+        thread: DirectThread,
+    ) {
+        if (index < 0) return
+        synchronized(this.inbox) {
+            val threads = inbox.threads
+            val threadsCopy = if (threads == null) LinkedList() else LinkedList(threads)
+            threadsCopy[index] = thread
+            try {
+                val clone = inbox.clone() as DirectInbox
+                clone.threads = threadsCopy
+                this.inbox.postValue(success(clone))
+            } catch (e: CloneNotSupportedException) {
+                Log.e(TAG, "setThread: ", e)
+            }
+        }
+    }
+
+    fun addItemsToThread(
+        threadId: String,
+        insertIndex: Int,
+        items: Collection<DirectItem>,
+    ) {
+        val inbox = currentDirectInbox ?: return
+        synchronized(THREAD_LOCKS.getUnchecked(threadId)) {
+            val index = getThreadIndex(threadId, inbox)
+            if (index < 0) return
+            val threads = inbox.threads ?: return
+            val thread = threads[index]
+            val threadItems = thread.items
+            val list = if (threadItems == null) LinkedList() else LinkedList(threadItems)
+            if (insertIndex >= 0) {
+                list.addAll(insertIndex, items)
+            } else {
+                list.addAll(items)
             }
-
-    public void fetchInbox() {
-        final Resource<DirectInbox> inboxResource = inbox.getValue();
-        if ((inboxResource != null && inboxResource.status == Resource.Status.LOADING) || !hasOlder) return;
-        stopCurrentInboxRequest();
-        inbox.postValue(Resource.loading(getCurrentDirectInbox()));
-        inboxRequest = pending ? service.fetchPendingInbox(cursor, seqId) : service.fetchInbox(cursor, seqId);
-        inboxRequest.enqueue(new Callback<DirectInboxResponse>() {
-            @Override
-            public void onResponse(@NonNull final Call<DirectInboxResponse> call, @NonNull final Response<DirectInboxResponse> response) {
-                parseInboxResponse(response.body());
+            try {
+                val threadClone = thread.clone() as DirectThread
+                threadClone.items = list
+                setThread(inbox, index, threadClone)
+            } catch (e: Exception) {
+                Log.e(TAG, "addItemsToThread: ", e)
             }
-
-            @Override
-            public void onFailure(@NonNull final Call<DirectInboxResponse> call, @NonNull final Throwable t) {
-                Log.e(TAG, "Failed fetching dm inbox", t);
-                inbox.postValue(Resource.error(t.getMessage(), getCurrentDirectInbox()));
-                hasOlder = false;
         }
-        });
     }
 
-    public void fetchUnseenCount() {
-        final Resource<Integer> unseenCountResource = unseenCount.getValue();
-        if ((unseenCountResource != null && unseenCountResource.status == Resource.Status.LOADING)) return;
-        stopCurrentUnseenCountRequest();
-        unseenCount.postValue(Resource.loading(getCurrentUnseenCount()));
-        unseenCountRequest = service.fetchUnseenCount();
-        unseenCountRequest.enqueue(new Callback<DirectBadgeCount>() {
-            @Override
-            public void onResponse(@NonNull final Call<DirectBadgeCount> call, @NonNull final Response<DirectBadgeCount> response) {
-                final DirectBadgeCount directBadgeCount = response.body();
-                if (directBadgeCount == null) {
-                    Log.e(TAG, "onResponse: directBadgeCount Response is null");
-                    unseenCount.postValue(Resource.error(R.string.dms_inbox_error_null_count, getCurrentUnseenCount()));
-                    return;
-                }
-                unseenCount.postValue(Resource.success(directBadgeCount.getBadgeCount()));
+    fun setItemsToThread(
+        threadId: String,
+        updatedItems: List<DirectItem>,
+    ) {
+        val inbox = currentDirectInbox ?: return
+        synchronized(THREAD_LOCKS.getUnchecked(threadId)) {
+            val index = getThreadIndex(threadId, inbox)
+            if (index < 0) return
+            val threads = inbox.threads ?: return
+            val thread = threads[index]
+            try {
+                val threadClone = thread.clone() as DirectThread
+                threadClone.items = updatedItems
+                setThread(inbox, index, threadClone)
+            } catch (e: Exception) {
+                Log.e(TAG, "setItemsToThread: ", e)
             }
-
-            @Override
-            public void onFailure(@NonNull final Call<DirectBadgeCount> call, @NonNull final Throwable t) {
-                Log.e(TAG, "Failed fetching unseen count", t);
-                unseenCount.postValue(Resource.error(t.getMessage(), getCurrentUnseenCount()));
         }
-        });
     }
 
-    public void refresh() {
-        cursor = null;
-        seqId = 0;
-        hasOlder = true;
-        fetchInbox();
-        if (!pending) {
-            fetchUnseenCount();
-        }
+    private fun getThreadIndex(
+        threadId: String,
+        inbox: DirectInbox,
+    ): Int {
+        val threads = inbox.threads
+        return if (threads == null || threads.isEmpty()) {
+            -1
+        } else threads.indexOfFirst { it.threadId == threadId }
     }
 
-    private DirectInbox getCurrentDirectInbox() {
-        final Resource<DirectInbox> inboxResource = inbox.getValue();
-        return inboxResource != null ? inboxResource.data : null;
+    private val currentUnseenCount: Int?
+        get() {
+            val unseenCountResource = unseenCount.value
+            return unseenCountResource?.data
         }
 
-    private void parseInboxResponse(final DirectInboxResponse response) {
-        if (response == null) {
-            Log.e(TAG, "parseInboxResponse: Response is null");
-            inbox.postValue(Resource.error(R.string.generic_null_response, getCurrentDirectInbox()));
-            hasOlder = false;
-            return;
-        }
-        if (!Objects.equals(response.getStatus(), "ok")) {
-            Log.e(TAG, "DM inbox fetch response: status not ok");
-            inbox.postValue(Resource.error(R.string.generic_not_ok_response, getCurrentDirectInbox()));
-            hasOlder = false;
-            return;
-        }
-        seqId = response.getSeqId();
-        if (viewer == null) {
-            viewer = response.getViewer();
+    private fun stopCurrentInboxRequest() {
+        inboxRequest?.let {
+            if (it.isCanceled || it.isExecuted) return
+            it.cancel()
         }
-        final DirectInbox inbox = response.getInbox();
-        if (inbox == null) return;
-        if (!TextUtils.isEmpty(cursor)) {
-            final DirectInbox currentDirectInbox = getCurrentDirectInbox();
-            if (currentDirectInbox != null) {
-                List<DirectThread> threads = currentDirectInbox.getThreads();
-                threads = threads == null ? new LinkedList<>() : new LinkedList<>(threads);
-                threads.addAll(inbox.getThreads() == null ? Collections.emptyList() : inbox.getThreads());
-                inbox.setThreads(threads);
+        inboxRequest = null
     }
+
+    private fun stopCurrentUnseenCountRequest() {
+        unseenCountRequest?.let {
+            if (it.isCanceled || it.isExecuted) return
+            it.cancel()
         }
-        this.inbox.postValue(Resource.success(inbox));
-        cursor = inbox.getOldestCursor();
-        hasOlder = inbox.getHasOlder();
-        pendingRequestsTotal.postValue(response.getPendingRequestsTotal());
+        unseenCountRequest = null
     }
 
-    public void setThread(@NonNull final String threadId,
-                          @NonNull final DirectThread thread) {
-        final DirectInbox inbox = getCurrentDirectInbox();
-        if (inbox == null) return;
-        final int index = getThreadIndex(threadId, inbox);
-        setThread(inbox, index, thread);
+    fun onDestroy() {
+        stopCurrentInboxRequest()
+        stopCurrentUnseenCountRequest()
     }
 
-    private void setThread(@NonNull final DirectInbox inbox,
-                           final int index,
-                           @NonNull final DirectThread thread) {
-        if (index < 0) return;
-        synchronized (this.inbox) {
-            final List<DirectThread> threadsCopy = new LinkedList<>(inbox.getThreads());
-            threadsCopy.set(index, thread);
+    fun addThread(thread: DirectThread, insertIndex: Int) {
+        if (insertIndex < 0) return
+        synchronized(inbox) {
+            val currentDirectInbox = currentDirectInbox ?: return
+            val threads = currentDirectInbox.threads
+            val threadsCopy = if (threads == null) LinkedList() else LinkedList(threads)
+            threadsCopy.add(insertIndex, thread)
             try {
-                final DirectInbox clone = (DirectInbox) inbox.clone();
-                clone.setThreads(threadsCopy);
-                this.inbox.postValue(Resource.success(clone));
-            } catch (CloneNotSupportedException e) {
-                Log.e(TAG, "setThread: ", e);
+                val clone = currentDirectInbox.clone() as DirectInbox
+                clone.threads = threadsCopy
+                inbox.setValue(success(clone))
+            } catch (e: CloneNotSupportedException) {
+                Log.e(TAG, "setThread: ", e)
             }
         }
     }
 
-    public void addItemsToThread(@NonNull final String threadId,
-                                 final int insertIndex,
-                                 @NonNull final Collection<DirectItem> items) {
-        final DirectInbox inbox = getCurrentDirectInbox();
-        if (inbox == null) return;
-        synchronized (THREAD_LOCKS.getUnchecked(threadId)) {
-            final int index = getThreadIndex(threadId, inbox);
-            if (index < 0) return;
-            final List<DirectThread> threads = inbox.getThreads();
-            final DirectThread thread = threads.get(index);
-            List<DirectItem> list = thread.getItems();
-            list = list == null ? new LinkedList<>() : new LinkedList<>(list);
-            if (insertIndex >= 0) {
-                list.addAll(insertIndex, items);
-            } else {
-                list.addAll(items);
-            }
+    fun removeThread(threadId: String) {
+        synchronized(inbox) {
+            val currentDirectInbox = currentDirectInbox ?: return
+            val threads = currentDirectInbox.threads ?: return
+            val threadsCopy = threads.asSequence().filter { it.threadId != threadId }.toList()
             try {
-                final DirectThread threadClone = (DirectThread) thread.clone();
-                threadClone.setItems(list);
-                setThread(inbox, index, threadClone);
-            } catch (Exception e) {
-                Log.e(TAG, "addItemsToThread: ", e);
+                val clone = currentDirectInbox.clone() as DirectInbox
+                clone.threads = threadsCopy
+                inbox.postValue(success(clone))
+            } catch (e: CloneNotSupportedException) {
+                Log.e(TAG, "setThread: ", e)
             }
         }
     }
 
-    public void setItemsToThread(@NonNull final String threadId,
-                                 @NonNull final List<DirectItem> updatedItems) {
-        final DirectInbox inbox = getCurrentDirectInbox();
-        if (inbox == null) return;
-        synchronized (THREAD_LOCKS.getUnchecked(threadId)) {
-            final int index = getThreadIndex(threadId, inbox);
-            if (index < 0) return;
-            final List<DirectThread> threads = inbox.getThreads();
-            final DirectThread thread = threads.get(index);
-            try {
-                final DirectThread threadClone = (DirectThread) thread.clone();
-                threadClone.setItems(updatedItems);
-                setThread(inbox, index, threadClone);
-            } catch (Exception e) {
-                Log.e(TAG, "setItemsToThread: ", e);
-            }
-        }
+    fun setPendingRequestsTotal(total: Int) {
+        pendingRequestsTotal.postValue(total)
     }
 
-    private int getThreadIndex(@NonNull final String threadId,
-                               @NonNull final DirectInbox inbox) {
-        final List<DirectThread> threads = inbox.getThreads();
-        if (threads == null || threads.isEmpty()) {
-            return -1;
-        }
-        return Iterables.indexOf(threads, t -> {
-            if (t == null) return false;
-            return t.getThreadId().equals(threadId);
-        });
+    fun containsThread(threadId: String?): Boolean {
+        if (threadId == null) return false
+        synchronized(inbox) {
+            val currentDirectInbox = currentDirectInbox ?: return false
+            val threads = currentDirectInbox.threads ?: return false
+            return threads.any { it.threadId == threadId }
         }
-
-    private Integer getCurrentUnseenCount() {
-        final Resource<Integer> unseenCountResource = unseenCount.getValue();
-        return unseenCountResource != null ? unseenCountResource.data : null;
     }
 
-    private void stopCurrentInboxRequest() {
-        if (inboxRequest == null || inboxRequest.isCanceled() || inboxRequest.isExecuted()) return;
-        inboxRequest.cancel();
-        inboxRequest = null;
-    }
-
-    private void stopCurrentUnseenCountRequest() {
-        if (unseenCountRequest == null || unseenCountRequest.isCanceled() || unseenCountRequest.isExecuted()) return;
-        unseenCountRequest.cancel();
-        unseenCountRequest = null;
-    }
-
-    public void onDestroy() {
-        stopCurrentInboxRequest();
-        stopCurrentUnseenCountRequest();
+    companion object {
+        private val TAG = InboxManager::class.java.simpleName
+        private val THREAD_LOCKS = CacheBuilder
+            .newBuilder()
+            .expireAfterAccess(1, TimeUnit.MINUTES) // max lock time ever expected
+            .build<String, Any>(CacheLoader.from<Any> { Object() })
+        private val THREAD_COMPARATOR = Comparator { t1: DirectThread, t2: DirectThread ->
+            val t1FirstDirectItem = t1.firstDirectItem
+            val t2FirstDirectItem = t2.firstDirectItem
+            if (t1FirstDirectItem == null && t2FirstDirectItem == null) return@Comparator 0
+            if (t1FirstDirectItem == null) return@Comparator 1
+            if (t2FirstDirectItem == null) return@Comparator -1
+            t2FirstDirectItem.getTimestamp().compareTo(t1FirstDirectItem.getTimestamp())
         }
 
-    public void addThread(@NonNull final DirectThread thread, final int insertIndex) {
-        if (insertIndex < 0) return;
-        synchronized (this.inbox) {
-            final DirectInbox currentDirectInbox = getCurrentDirectInbox();
-            if (currentDirectInbox == null) return;
-            final List<DirectThread> threadsCopy = new LinkedList<>(currentDirectInbox.getThreads());
-            threadsCopy.add(insertIndex, thread);
-            try {
-                final DirectInbox clone = (DirectInbox) currentDirectInbox.clone();
-                clone.setThreads(threadsCopy);
-                this.inbox.setValue(Resource.success(clone));
-            } catch (CloneNotSupportedException e) {
-                Log.e(TAG, "setThread: ", e);
-            }
+        fun getInstance(pending: Boolean): InboxManager {
+            return InboxManager(pending)
         }
     }
 
-    public void removeThread(@NonNull final String threadId) {
-        synchronized (this.inbox) {
-            final DirectInbox currentDirectInbox = getCurrentDirectInbox();
-            if (currentDirectInbox == null) return;
-            final List<DirectThread> threadsCopy = currentDirectInbox.getThreads()
-                                                                     .stream()
-                                                                     .filter(t -> !t.getThreadId().equals(threadId))
-                                                                     .collect(Collectors.toList());
-            try {
-                final DirectInbox clone = (DirectInbox) currentDirectInbox.clone();
-                clone.setThreads(threadsCopy);
-                this.inbox.postValue(Resource.success(clone));
-            } catch (CloneNotSupportedException e) {
-                Log.e(TAG, "setThread: ", e);
-            }
-        }
-    }
+    init {
+        val cookie = Utils.settingsHelper.getString(Constants.COOKIE)
+        val viewerId = getUserIdFromCookie(cookie)
+        val deviceUuid = Utils.settingsHelper.getString(Constants.DEVICE_UUID)
+        val csrfToken = getCsrfTokenFromCookie(cookie)
+        require(!csrfToken.isNullOrBlank() && viewerId != 0L && deviceUuid.isNotBlank()) { "User is not logged in!" }
+        service = getInstance(csrfToken, viewerId, deviceUuid)
 
-    public void setPendingRequestsTotal(final int total) {
-        pendingRequestsTotal.postValue(total);
+        // Transformations
+        threads = Transformations.distinctUntilChanged(Transformations.map(inbox) { inboxResource: Resource<DirectInbox?>? ->
+            if (inboxResource == null) {
+                return@map emptyList()
             }
-
-    public boolean containsThread(final String threadId) {
-        if (threadId == null) return false;
-        synchronized (this.inbox) {
-            final DirectInbox currentDirectInbox = getCurrentDirectInbox();
-            if (currentDirectInbox == null) return false;
-            final List<DirectThread> threads = currentDirectInbox.getThreads();
-            if (threads == null) return false;
-            return threads.stream().anyMatch(thread -> Objects.equals(thread.getThreadId(), threadId));
+            val inbox = inboxResource.data
+            val threads = inbox?.threads ?: emptyList()
+            ImmutableList.sortedCopyOf(THREAD_COMPARATOR, threads)
+        })
+        fetchInbox()
+        if (!pending) {
+            fetchUnseenCount()
         }
     }
 }

app/src/main/java/awais/instagrabber/services/DMSyncService.java

@@ -59,7 +59,7 @@ public class DMSyncService extends LifecycleService {
         super.onCreate();
         startForeground(Constants.DM_CHECK_NOTIFICATION_ID, buildForegroundNotification());
         Log.d(TAG, "onCreate: Service created");
-        final DirectMessagesManager directMessagesManager = DirectMessagesManager.getInstance();
+        final DirectMessagesManager directMessagesManager = DirectMessagesManager.INSTANCE;
         inboxManager = directMessagesManager.getInboxManager();
         dmLastNotifiedRepository = DMLastNotifiedRepository.getInstance(DMLastNotifiedDataSource.getInstance(getApplicationContext()));
     }

app/src/main/java/awais/instagrabber/utils/MediaUploader.java

@@ -1,193 +0,0 @@
-package awais.instagrabber.utils;
-
-import android.content.ContentResolver;
-import android.graphics.Bitmap;
-import android.net.Uri;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import org.json.JSONObject;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.Map;
-
-import awais.instagrabber.models.UploadPhotoOptions;
-import awais.instagrabber.models.UploadVideoOptions;
-import awais.instagrabber.webservices.interceptors.AddCookiesInterceptor;
-import okhttp3.Call;
-import okhttp3.Headers;
-import okhttp3.MediaType;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
-import okhttp3.RequestBody;
-import okhttp3.Response;
-import okhttp3.ResponseBody;
-import okio.BufferedSink;
-import okio.Okio;
-import okio.Source;
-
-public final class MediaUploader {
-    private static final String TAG = MediaUploader.class.getSimpleName();
-    private static final String HOST = "https://i.instagram.com";
-    private static final AppExecutors appExecutors = AppExecutors.INSTANCE;
-
-    public static void uploadPhoto(@NonNull final Uri uri,
-                                   @NonNull final ContentResolver contentResolver,
-                                   @NonNull final OnMediaUploadCompleteListener listener) {
-        BitmapUtils.loadBitmap(contentResolver, uri, 1000, false, new BitmapUtils.ThumbnailLoadCallback() {
-            @Override
-            public void onLoad(@Nullable final Bitmap bitmap, final int width, final int height) {
-                if (bitmap == null) {
-                    listener.onFailure(new RuntimeException("Bitmap result was null"));
-                    return;
-                }
-                uploadPhoto(bitmap, listener);
-            }
-
-            @Override
-            public void onFailure(@NonNull final Throwable t) {
-                listener.onFailure(t);
-            }
-        });
-    }
-
-    private static void uploadPhoto(@NonNull final Bitmap bitmap,
-                                    @NonNull final OnMediaUploadCompleteListener listener) {
-        appExecutors.getTasksThread().submit(() -> {
-            final File file;
-            final long byteLength;
-            try {
-                file = BitmapUtils.convertToJpegAndSaveToFile(bitmap, null);
-                byteLength = file.length();
-            } catch (Exception e) {
-                listener.onFailure(e);
-                return;
-            }
-            final UploadPhotoOptions options = MediaUploadHelper.createUploadPhotoOptions(byteLength);
-            final Map<String, String> headers = MediaUploadHelper.getUploadPhotoHeaders(options);
-            final String url = HOST + "/rupload_igphoto/" + options.getName() + "/";
-            appExecutors.getNetworkIO().execute(() -> {
-                try (FileInputStream input = new FileInputStream(file)) {
-                    upload(input, url, headers, listener);
-                } catch (IOException e) {
-                    listener.onFailure(e);
-                } finally {
-                    //noinspection ResultOfMethodCallIgnored
-                    file.delete();
-                }
-            });
-        });
-    }
-
-    public static void uploadVideo(final Uri uri,
-                                   final ContentResolver contentResolver,
-                                   final UploadVideoOptions options,
-                                   final OnMediaUploadCompleteListener listener) {
-        appExecutors.getTasksThread().submit(() -> {
-            final Map<String, String> headers = MediaUploadHelper.getUploadVideoHeaders(options);
-            final String url = HOST + "/rupload_igvideo/" + options.getName() + "/";
-            appExecutors.getNetworkIO().execute(() -> {
-                try (InputStream input = contentResolver.openInputStream(uri)) {
-                    if (input == null) {
-                        listener.onFailure(new RuntimeException("InputStream was null"));
-                        return;
-                    }
-                    upload(input, url, headers, listener);
-                } catch (IOException e) {
-                    listener.onFailure(e);
-                }
-            });
-        });
-    }
-
-    private static void upload(@NonNull final InputStream input,
-                               @NonNull final String url,
-                               @NonNull final Map<String, String> headers,
-                               @NonNull final OnMediaUploadCompleteListener listener) {
-        try {
-            final OkHttpClient client = new OkHttpClient.Builder()
-                    // .addInterceptor(new LoggingInterceptor())
-                    .addInterceptor(new AddCookiesInterceptor())
-                    .followRedirects(false)
-                    .followSslRedirects(false)
-                    .build();
-            final Request request = new Request.Builder()
-                    .headers(Headers.of(headers))
-                    .url(url)
-                    .post(create(MediaType.parse("application/octet-stream"), input))
-                    .build();
-            final Call call = client.newCall(request);
-            final Response response = call.execute();
-            final ResponseBody body = response.body();
-            if (!response.isSuccessful()) {
-                listener.onFailure(new IOException("Unexpected code " + response + (body != null ? ": " + body.string() : "")));
-                return;
-            }
-            listener.onUploadComplete(new MediaUploadResponse(response.code(), body != null ? new JSONObject(body.string()) : null));
-        } catch (Exception e) {
-            listener.onFailure(e);
-        }
-    }
-
-    public interface OnMediaUploadCompleteListener {
-        void onUploadComplete(MediaUploadResponse response);
-
-        void onFailure(Throwable t);
-    }
-
-    private static RequestBody create(final MediaType mediaType, final InputStream inputStream) {
-        return new RequestBody() {
-            @Override
-            public MediaType contentType() {
-                return mediaType;
-            }
-
-            @Override
-            public long contentLength() {
-                try {
-                    return inputStream.available();
-                } catch (IOException e) {
-                    return 0;
-                }
-            }
-
-            @Override
-            public void writeTo(@NonNull BufferedSink sink) throws IOException {
-                try (Source source = Okio.source(inputStream)) {
-                    sink.writeAll(source);
-                }
-            }
-        };
-    }
-
-    public static class MediaUploadResponse {
-        private final int responseCode;
-        private final JSONObject response;
-
-        public MediaUploadResponse(int responseCode, JSONObject response) {
-            this.responseCode = responseCode;
-            this.response = response;
-        }
-
-        public int getResponseCode() {
-            return responseCode;
-        }
-
-        public JSONObject getResponse() {
-            return response;
-        }
-
-        @NonNull
-        @Override
-        public String toString() {
-            return "MediaUploadResponse{" +
-                    "responseCode=" + responseCode +
-                    ", response=" + response +
-                    '}';
-        }
-    }
-}

app/src/main/java/awais/instagrabber/utils/MediaUploader.kt

@@ -0,0 +1,155 @@
+package awais.instagrabber.utils
+
+import android.content.ContentResolver
+import android.graphics.Bitmap
+import android.net.Uri
+import awais.instagrabber.models.UploadVideoOptions
+import awais.instagrabber.utils.BitmapUtils.ThumbnailLoadCallback
+import awais.instagrabber.webservices.interceptors.AddCookiesInterceptor
+import okhttp3.*
+import okio.BufferedSink
+import okio.source
+import org.json.JSONObject
+import java.io.File
+import java.io.FileInputStream
+import java.io.IOException
+import java.io.InputStream
+
+object MediaUploader {
+    private const val HOST = "https://i.instagram.com"
+    private val appExecutors = AppExecutors
+
+    fun uploadPhoto(
+        uri: Uri,
+        contentResolver: ContentResolver,
+        listener: OnMediaUploadCompleteListener,
+    ) {
+        BitmapUtils.loadBitmap(contentResolver, uri, 1000f, false, object : ThumbnailLoadCallback {
+            override fun onLoad(bitmap: Bitmap?, width: Int, height: Int) {
+                if (bitmap == null) {
+                    listener.onFailure(RuntimeException("Bitmap result was null"))
+                    return
+                }
+                uploadPhoto(bitmap, listener)
+            }
+
+            override fun onFailure(t: Throwable) {
+                listener.onFailure(t)
+            }
+        })
+    }
+
+    private fun uploadPhoto(
+        bitmap: Bitmap,
+        listener: OnMediaUploadCompleteListener,
+    ) {
+        appExecutors.tasksThread.submit {
+            val file: File
+            val byteLength: Long
+            try {
+                file = BitmapUtils.convertToJpegAndSaveToFile(bitmap, null)
+                byteLength = file.length()
+            } catch (e: Exception) {
+                listener.onFailure(e)
+                return@submit
+            }
+            val options = createUploadPhotoOptions(byteLength)
+            val headers = getUploadPhotoHeaders(options)
+            val url = HOST + "/rupload_igphoto/" + options.name + "/"
+            appExecutors.networkIO.execute {
+                try {
+                    FileInputStream(file).use { input -> upload(input, url, headers, listener) }
+                } catch (e: IOException) {
+                    listener.onFailure(e)
+                } finally {
+                    file.delete()
+                }
+            }
+        }
+    }
+
+    @JvmStatic
+    fun uploadVideo(
+        uri: Uri,
+        contentResolver: ContentResolver,
+        options: UploadVideoOptions,
+        listener: OnMediaUploadCompleteListener,
+    ) {
+        appExecutors.tasksThread.submit {
+            val headers = getUploadVideoHeaders(options)
+            val url = HOST + "/rupload_igvideo/" + options.name + "/"
+            appExecutors.networkIO.execute {
+                try {
+                    contentResolver.openInputStream(uri).use { input ->
+                        if (input == null) {
+                            listener.onFailure(RuntimeException("InputStream was null"))
+                            return@execute
+                        }
+                        upload(input, url, headers, listener)
+                    }
+                } catch (e: IOException) {
+                    listener.onFailure(e)
+                }
+            }
+        }
+    }
+
+    private fun upload(
+        input: InputStream,
+        url: String,
+        headers: Map<String, String>,
+        listener: OnMediaUploadCompleteListener,
+    ) {
+        try {
+            val client = OkHttpClient.Builder()
+                // .addInterceptor(new LoggingInterceptor())
+                .addInterceptor(AddCookiesInterceptor())
+                .followRedirects(false)
+                .followSslRedirects(false)
+                .build()
+            val request = Request.Builder()
+                .headers(Headers.of(headers))
+                .url(url)
+                .post(create(MediaType.parse("application/octet-stream"), input))
+                .build()
+            val call = client.newCall(request)
+            val response = call.execute()
+            val body = response.body()
+            if (!response.isSuccessful) {
+                listener.onFailure(IOException("Unexpected code " + response + if (body != null) ": " + body.string() else ""))
+                return
+            }
+            listener.onUploadComplete(MediaUploadResponse(response.code(), if (body != null) JSONObject(body.string()) else null))
+        } catch (e: Exception) {
+            listener.onFailure(e)
+        }
+    }
+
+    private fun create(mediaType: MediaType?, inputStream: InputStream): RequestBody {
+        return object : RequestBody() {
+            override fun contentType(): MediaType? {
+                return mediaType
+            }
+
+            override fun contentLength(): Long {
+                return try {
+                    inputStream.available().toLong()
+                } catch (e: IOException) {
+                    0
+                }
+            }
+
+            @Throws(IOException::class)
+            override fun writeTo(sink: BufferedSink) {
+                inputStream.source().use { sink.writeAll(it) }
+            }
+        }
+    }
+
+    interface OnMediaUploadCompleteListener {
+        fun onUploadComplete(response: MediaUploadResponse)
+        fun onFailure(t: Throwable)
+    }
+
+    data class MediaUploadResponse(val responseCode: Int, val response: JSONObject?)
+}

app/src/main/java/awais/instagrabber/viewmodels/DirectInboxViewModel.java

@@ -18,7 +18,7 @@ public class DirectInboxViewModel extends ViewModel {
     private final InboxManager inboxManager;
 
     public DirectInboxViewModel() {
-        final DirectMessagesManager messagesManager = DirectMessagesManager.getInstance();
+        final DirectMessagesManager messagesManager = DirectMessagesManager.INSTANCE;
         inboxManager = messagesManager.getInboxManager();
     }
 

app/src/main/java/awais/instagrabber/viewmodels/DirectPendingInboxViewModel.java

@@ -18,7 +18,7 @@ public class DirectPendingInboxViewModel extends ViewModel {
     private final InboxManager inboxManager;
 
     public DirectPendingInboxViewModel() {
-        inboxManager = DirectMessagesManager.getInstance().getPendingInboxManager();
+        inboxManager = DirectMessagesManager.INSTANCE.getPendingInboxManager();
         inboxManager.fetchInbox();
     }
 

app/src/main/java/awais/instagrabber/viewmodels/DirectSettingsViewModel.java

@@ -57,7 +57,7 @@ public class DirectSettingsViewModel extends AndroidViewModel {
         }
         final ContentResolver contentResolver = application.getContentResolver();
         resources = getApplication().getResources();
-        final DirectMessagesManager messagesManager = DirectMessagesManager.getInstance();
+        final DirectMessagesManager messagesManager = DirectMessagesManager.INSTANCE;
         threadManager = messagesManager.getThreadManager(threadId, pending, currentUser, contentResolver);
     }
 

app/src/main/java/awais/instagrabber/viewmodels/DirectThreadViewModel.java

@@ -52,8 +52,8 @@ public class DirectThreadViewModel extends AndroidViewModel {
     private final long viewerId;
     private final String threadId;
     private final User currentUser;
-    private final ThreadManager threadManager;
 
+    private ThreadManager threadManager;
     private VoiceRecorder voiceRecorder;
 
     public DirectThreadViewModel(@NonNull final Application application,
@@ -73,14 +73,15 @@ public class DirectThreadViewModel extends AndroidViewModel {
         }
         contentResolver = application.getContentResolver();
         recordingsDir = DirectoryUtils.getOutputMediaDirectory(application, "Recordings");
-        final DirectMessagesManager messagesManager = DirectMessagesManager.getInstance();
+        final DirectMessagesManager messagesManager = DirectMessagesManager.INSTANCE;
         threadManager = messagesManager.getThreadManager(threadId, pending, currentUser, contentResolver);
         threadManager.fetchPendingRequests();
     }
 
     public void moveFromPending() {
-        DirectMessagesManager.getInstance().moveThreadFromPending(threadId);
-        threadManager.moveFromPending();
+        final DirectMessagesManager messagesManager = DirectMessagesManager.INSTANCE;
+        messagesManager.moveThreadFromPending(threadId);
+        threadManager = messagesManager.getThreadManager(threadId, false, currentUser, contentResolver);
     }
 
     public void removeThread() {
@@ -268,7 +269,7 @@ public class DirectThreadViewModel extends AndroidViewModel {
         threadManager.forward(recipient, itemToForward);
     }
 
-    public void setReplyToItem(final DirectItem item) {
+    public void setReplyToItem(@Nullable final DirectItem item) {
         // Log.d(TAG, "setReplyToItem: " + item);
         threadManager.setReplyToItem(item);
     }
@@ -327,7 +328,7 @@ public class DirectThreadViewModel extends AndroidViewModel {
         final DirectThread thread = getThread().getValue();
         if (thread == null) return;
         if (thread.isTemp() && (thread.getItems() == null || thread.getItems().isEmpty())) {
-            final InboxManager inboxManager = DirectMessagesManager.getInstance().getInboxManager();
+            final InboxManager inboxManager = DirectMessagesManager.INSTANCE.getInboxManager();
             inboxManager.removeThread(threadId);
         }
     }

app/src/main/java/awais/instagrabber/viewmodels/PostViewV2ViewModel.java

@@ -333,14 +333,14 @@ public class PostViewV2ViewModel extends ViewModel {
 
     public void shareDm(@NonNull final RankedRecipient result) {
         if (messageManager == null) {
-            messageManager = DirectMessagesManager.getInstance();
+            messageManager = DirectMessagesManager.INSTANCE;
         }
         messageManager.sendMedia(result, media.getId());
     }
 
     public void shareDm(@NonNull final Set<RankedRecipient> recipients) {
         if (messageManager == null) {
-            messageManager = DirectMessagesManager.getInstance();
+            messageManager = DirectMessagesManager.INSTANCE;
         }
         messageManager.sendMedia(recipients, media.getId());
     }