TelegramBots/src/main/java/org/telegram/telegrambots/api/objects/Contact.java

package org.telegram.telegrambots.api.objects;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import org.json.JSONObject;
import org.telegram.telegrambots.api.interfaces.IBotApiObject;

import java.io.IOException;

/**
 * @author Ruben Bermudez
 * @version 1.0
 * @brief This object represents a phone contact.
 * @date 20 of June of 2015
 */
public class Contact implements IBotApiObject {

    public static final String PHONENUMBER_FIELD = "phone_number";
    @JsonProperty(PHONENUMBER_FIELD)
    private String phoneNumber; ///< Contact's phone number
    public static final String FIRSTNAME_FIELD = "first_name";
    @JsonProperty(FIRSTNAME_FIELD)
    private String firstName; ///< Contact's first name
    public static final String LASTNAME_FIELD = "last_name";
    @JsonProperty(LASTNAME_FIELD)
    private String lastName; ///< Optional. Contact's last name
    public static final String USERID_FIELD = "user_id";
    @JsonProperty(USERID_FIELD)
    private Integer userID; ///< Optional. Contact's user identifier in Telegram

    public Contact() {
        super();
    }

    public Contact(JSONObject jsonObject) {
        super();
        this.phoneNumber = jsonObject.getString(PHONENUMBER_FIELD);
        this.firstName = jsonObject.getString(FIRSTNAME_FIELD);
        if (jsonObject.has(LASTNAME_FIELD)) {
            this.lastName = jsonObject.getString(LASTNAME_FIELD);
        }
        if (jsonObject.has(USERID_FIELD)) {
            this.userID = jsonObject.getInt(USERID_FIELD);
        }
    }

    @Override
    public void serialize(JsonGenerator gen, SerializerProvider serializers) throws IOException {
        gen.writeStartObject();
        gen.writeStringField(PHONENUMBER_FIELD, phoneNumber);
        gen.writeStringField(FIRSTNAME_FIELD, firstName);
        if (lastName != null) {
            gen.writeStringField(LASTNAME_FIELD, lastName);
        }
        if (userID != null) {
            gen.writeNumberField(USERID_FIELD, userID);
        }
        gen.writeEndObject();
        gen.flush();
    }

    @Override
    public void serializeWithType(JsonGenerator gen, SerializerProvider serializers, TypeSerializer typeSer) throws IOException {
        serialize(gen, serializers);
    }
}