StringTypeAdaptor.java

/*
 * omdb-java-client - A client to access the OMDB API
 * Copyright © 2025 Andy Miles (andy.miles@amilesend.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.amilesend.omdb.client.parse.adapters;

import com.amilesend.client.util.StringUtils;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;

import java.lang.reflect.Type;

/** GSON adapter to format and serializes {@link String} objects. */
public class StringTypeAdaptor implements JsonDeserializer<String> {
    /** OMDb returns "N/A" for undefined values. */
    public static final String NOT_AVAILABLE = "N/A";

    @Override
    public String deserialize(
            final JsonElement jsonElement,
            final Type typeOfT,
            final JsonDeserializationContext context) throws JsonParseException {
        if (jsonElement.isJsonNull()) {
            return null;
        }

        final String value = jsonElement.getAsString();
        if (StringUtils.isBlank(value) || NOT_AVAILABLE.equals(value)) {
            return null;
        }

        return value;
    }
}