com.unzer.payment.communication.JsonDateConverter Maven / Gradle / Ivy

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package com.unzer.payment.communication;

/*-
 * #%L
 * Unzer Java SDK
 * %%
 * Copyright (C) 2020 Unzer E-Com GmbH
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import com.google.gson.*;

import java.lang.reflect.Type;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class JsonDateConverter
		implements JsonDeserializer, JsonSerializer {

	@Override
	public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) {
		return getDate(json);
	}

	@Override
	public JsonElement serialize(Date src, Type typeOfSrc, JsonSerializationContext context) {
		return new JsonPrimitive(new SimpleDateFormat("yyyy-MM-dd").format(src));
	}

	Date getDate(JsonElement json) {
		String jsonValue = json.getAsJsonPrimitive().getAsString();
		if (jsonValue == null || "".equalsIgnoreCase(jsonValue)) {
			return null;
		}
		try {
			if (jsonValue.length() == 10) {
				return new SimpleDateFormat("yyyy-MM-dd").parse(jsonValue);
			} else {
				return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(jsonValue);
			}
		} catch (ParseException e) {
			throw new JsonParseException("Cannot parse date " + json.getAsJsonPrimitive().getAsString() + ". Date must be in format 'yyyy-MM-dd HH:mm:ss");
		}
	}

}