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/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */
package org.apache.hc.client5.http.impl.cookie;

import java.time.Instant;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;

import org.apache.hc.client5.http.cookie.CommonCookieAttributeHandler;
import org.apache.hc.client5.http.cookie.Cookie;
import org.apache.hc.client5.http.cookie.MalformedCookieException;
import org.apache.hc.client5.http.cookie.SetCookie;
import org.apache.hc.client5.http.utils.DateUtils;
import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.util.Args;

/**
 * Cookie {@code expires} attribute handler.
 *
 * @since 4.0
 */
@Contract(threading = ThreadingBehavior.STATELESS)
public class BasicExpiresHandler extends AbstractCookieAttributeHandler implements CommonCookieAttributeHandler {

    /** Valid date patterns */
    private final DateTimeFormatter[] datePatterns;

    /**
     * @since 5.2
     */
    public BasicExpiresHandler(final DateTimeFormatter... datePatterns) {
        this.datePatterns = datePatterns;
    }

    /**
     * @deprecated Use {@link #BasicExpiresHandler(DateTimeFormatter...)}
     */
    @Deprecated
    public BasicExpiresHandler(final String[] datePatterns) {
        Args.notNull(datePatterns, "Array of date patterns");
        this.datePatterns = new DateTimeFormatter[datePatterns.length];
        for (int i = 0; i < datePatterns.length; i++) {
            this.datePatterns[i] = new DateTimeFormatterBuilder()
                    .parseLenient()
                    .parseCaseInsensitive()
                    .appendPattern(datePatterns[i])
                    .toFormatter();
        }

    }

    @Override
    public void parse(final SetCookie cookie, final String value)
            throws MalformedCookieException {
        Args.notNull(cookie, "Cookie");
        if (value == null) {
            throw new MalformedCookieException("Missing value for 'expires' attribute");
        }
        final Instant expiry = DateUtils.parseDate(value, this.datePatterns);
        if (expiry == null) {
            throw new MalformedCookieException("Invalid 'expires' attribute: "
                    + value);
        }
        cookie.setExpiryDate(expiry);
    }

    @Override
    public String getAttributeName() {
        return Cookie.EXPIRES_ATTR;
    }

}