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Adyen API Client Library for Java

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/*
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 *
 * Adyen Java API Library
 *
 * Copyright (c) 2019 Adyen B.V.
 * This file is open source and available under the MIT license.
 * See the LICENSE file for more info.
 */

package com.adyen.terminal.serialization;

import com.google.gson.FieldNamingStrategy;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.datatype.XMLGregorianCalendar;
import java.lang.reflect.Field;

public final class TerminalAPIGsonBuilder {

    private TerminalAPIGsonBuilder() {
    }

    public static Gson create() {
        GsonBuilder gsonBuilder = new GsonBuilder();
        FieldNamingStrategy fieldNamingStrategy = new FieldNamingStrategy() {
            @Override
            public String translateName(Field field) {
                if (field.getAnnotation(XmlElement.class) != null) {
                    XmlElement xmlElement = field.getAnnotation(XmlElement.class);
                    return xmlElement.name();
                } else if (field.getAnnotation(XmlAttribute.class) != null) {
                    XmlAttribute xmlAttribute = field.getAnnotation(XmlAttribute.class);
                    return xmlAttribute.name();
                } else if (field.getAnnotation(XmlRootElement.class) != null) {
                    XmlRootElement xmlRootElement = field.getAnnotation(XmlRootElement.class);
                    return xmlRootElement.name();
                }
                return field.getName();
            }
        };
        gsonBuilder.setFieldNamingStrategy(fieldNamingStrategy);
        gsonBuilder.registerTypeHierarchyAdapter(byte[].class, new ByteArrayToBase64TypeAdapter());
        gsonBuilder.registerTypeHierarchyAdapter(XMLGregorianCalendar.class, new XMLGregorianCalendarTypeAdapter());
        gsonBuilder.registerTypeAdapterFactory(new XMLEnumAdapterFactory());
        gsonBuilder.disableHtmlEscaping();

        return gsonBuilder.create();
    }
}