fixup! handle different Date formats

Author: katrinSaleschus

gitlab4j-models/src/main/java/org/gitlab4j/models/utils/MultiDateFormatDeserializer.java

@@ -0,0 +1,47 @@
+package org.gitlab4j.models.utils;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+import java.util.Date;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
+
+public class MultiDateFormatDeserializer extends StdDeserializer<Date> {
+    public static final String[] DATE_FORMATS =
+            new String[] {"yyyy-MM-dd HH:mm:ss Z", "yyyy-MM-dd'T'HH:mm:ss.SSSXXX", "yyyy-MM-dd'T'HH:mm:ssXXX"};
+    private static final long serialVersionUID = 1L;
+
+    public MultiDateFormatDeserializer() {
+        this(null);
+    }
+
+    public MultiDateFormatDeserializer(Class<?> vc) {
+        super(vc);
+    }
+
+    @Override
+    /**
+     * Deserializes a custom date in several international date formats
+     */
+    public Date deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
+        final String date = ((JsonNode) jp.getCodec().readTree(jp)).textValue();
+        if (date == null || date.isEmpty()) {
+            return null;
+        }
+        for (String dateFormat : DATE_FORMATS) {
+            try {
+                SimpleDateFormat formatter = new SimpleDateFormat(dateFormat);
+                return formatter.parse(date);
+            } catch (ParseException e) {
+            }
+        }
+        throw new JsonParseException(
+                jp, "Unparseable date: \"" + date + "\". Supported formats: " + Arrays.toString(DATE_FORMATS));
+    }
+}