add dialog to confirm logout

app/src/main/java/com/dkanada/gramophone/dialogs/ConfirmLogoutDialog.java

@@ -0,0 +1,51 @@
+package com.dkanada.gramophone.dialogs;
+
+import android.app.Dialog;
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;
+
+import com.afollestad.materialdialogs.MaterialDialog;
+import com.dkanada.gramophone.App;
+import com.dkanada.gramophone.R;
+import com.dkanada.gramophone.ui.activities.LoginActivity;
+
+import org.jellyfin.apiclient.interaction.EmptyResponse;
+import org.jellyfin.apiclient.interaction.VolleyHttpClient;
+import org.jellyfin.apiclient.interaction.http.IAsyncHttpClient;
+import org.jellyfin.apiclient.logging.AndroidLogger;
+import org.jellyfin.apiclient.model.logging.ILogger;
+import org.jellyfin.apiclient.model.serialization.GsonJsonSerializer;
+import org.jellyfin.apiclient.model.serialization.IJsonSerializer;
+
+public class ConfirmLogoutDialog extends DialogFragment {
+    @NonNull
+    public static ConfirmLogoutDialog create() {
+        return new ConfirmLogoutDialog();
+    }
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        return new MaterialDialog.Builder(getActivity())
+                .title(R.string.logout)
+                .content(R.string.confirm_logout)
+                .positiveText(R.string.logout)
+                .negativeText(android.R.string.cancel)
+                .onPositive((dialog, which) -> {
+                    if (getActivity() == null) return;
+
+                    IJsonSerializer jsonSerializer = new GsonJsonSerializer();
+                    ILogger logger = new AndroidLogger(getActivity().getClass().getName());
+                    IAsyncHttpClient httpClient = new VolleyHttpClient(logger, getActivity());
+
+                    App.getConnectionManager(getActivity(), jsonSerializer, logger, httpClient).Logout(new EmptyResponse());
+                    Intent intent = new Intent(getActivity(), LoginActivity.class);
+                    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
+                    this.startActivity(intent);
+                })
+                .build();
+    }
+}