Add common utils

app/src/main/java/com/github/gotify/Utils.java

@@ -0,0 +1,57 @@
+package com.github.gotify;
+
+import android.app.Activity;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.text.format.DateUtils;
+import android.view.View;
+
+import com.github.gotify.client.ApiClient;
+import com.github.gotify.client.JSON;
+import com.github.gotify.log.Log;
+import com.google.android.material.snackbar.Snackbar;
+import com.squareup.picasso.Picasso;
+import com.squareup.picasso.Target;
+
+import org.threeten.bp.OffsetDateTime;
+
+public class Utils {
+    public static void showSnackBar(Activity activity, String message) {
+        View rootView = activity.getWindow().getDecorView().findViewById(android.R.id.content);
+        Snackbar.make(rootView, message, Snackbar.LENGTH_SHORT).show();
+    }
+
+    public static String dateToRelative(OffsetDateTime data) {
+        long time = data.toInstant().toEpochMilli();
+        long now = System.currentTimeMillis();
+        return DateUtils.getRelativeTimeSpanString(time, now, DateUtils.MINUTE_IN_MILLIS)
+                .toString();
+    }
+
+    public static Target toDrawable(Resources resources, DrawableReceiver drawableReceiver) {
+        return new Target() {
+            @Override
+            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
+                drawableReceiver.loaded(new BitmapDrawable(resources, bitmap));
+            }
+
+            @Override
+            public void onBitmapFailed(Exception e, Drawable errorDrawable) {
+                Log.e("Bitmap failed", e);
+            }
+
+            @Override
+            public void onPrepareLoad(Drawable placeHolderDrawable) {}
+        };
+    }
+
+    public static JSON json() {
+        return new ApiClient().getJSON();
+    }
+
+    public interface DrawableReceiver {
+        void loaded(Drawable drawable);
+    }
+}