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Verifalia provides a simple HTTPS-based API for validating email addresses and checking whether they are deliverable or not. This library allows to easily integrate with Verifalia and verify email addresses in real-time.

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/*
 * Verifalia - Email list cleaning and real-time email verification service
 * https://verifalia.com/
 * [email protected]
 *
 * Copyright (c) 2005-2020 Cobisi Research
 *
 * Cobisi Research
 * Via Prima Strada, 35
 * 35129, Padova
 * Italy - European Union
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.verifalia.api.common.serialization;

import lombok.NonNull;
import org.apache.commons.lang3.StringUtils;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.map.DeserializationContext;
import org.codehaus.jackson.map.JsonDeserializer;

import java.io.IOException;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

/**
 * A Json deserializer for the dates returned by the Verifalia API.
 */
public class DateDeserializer extends JsonDeserializer {
    private static LocalDate convertStringToLocalDate(@NonNull final String dateStr) {
        if (!StringUtils.isBlank(dateStr)) {
            return LocalDate.parse(dateStr, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
        }
        return null;
    }

    @Override
    public LocalDate deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
        String dateString = jsonParser.getText();

        if (dateString == null) {
            return null;
        }

        return convertStringToLocalDate(dateString);
    }
}