1 files changed, 42 insertions, 0 deletions
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/util/VCardUtil.java b/app/src/main/java/it/niedermann/nextcloud/deck/util/VCardUtil.java
new file mode 100644
index 000000000..274af332d
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/util/VCardUtil.java
@@ -0,0 +1,42 @@
+package it.niedermann.nextcloud.deck.util;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.Cursor;
+import android.graphics.Color;
+import android.net.Uri;
+import android.provider.ContactsContract;
+
+import androidx.annotation.ColorInt;
+import androidx.annotation.NonNull;
+
+import java.util.NoSuchElementException;
+import java.util.Objects;
+
+import it.niedermann.nextcloud.deck.R;
+
+public class VCardUtil {
+
+    private VCardUtil() {
+        // You shall not pass
+    }
+
+    public static Uri getVCardContentUri(@NonNull Context context, @NonNull Uri contactUri) throws NoSuchElementException {
+        final ContentResolver cr = context.getContentResolver();
+        try (final Cursor cursor = cr.query(contactUri, null, null, null, null)) {
+            if (cursor != null && cursor.moveToFirst()) {
+                final String lookupKey = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
+                return Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_VCARD_URI, lookupKey);
+            } else {
+                throw new NoSuchElementException("Cursor has zero entries");
+            }
+        }
+    }
+
+    @ColorInt
+    public static int getColorBasedOnDisplayName(@NonNull Context context, @NonNull String displayName) {
+        final String[] colors = context.getResources().getStringArray(R.array.board_default_colors);
+        final int hashCode = Objects.hashCode(displayName);
+        return Color.parseColor(colors[(hashCode < 0 ? hashCode * -1 : hashCode) % colors.length]);
+    }
+}