/*
 * Copyright (C) 2010 ZXing authors
 *
 * Licensed 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.
 */

/*
 * These authors would like to acknowledge the Spanish Ministry of Industry,
 * Tourism and Trade, for the support in the project TSI020301-2008-2
 * "PIRAmIDE: Personalizable Interactions with Resources on AmI-enabled
 * Mobile Dynamic Environments", led by Treelogic
 * ( http://www.treelogic.com/ ):
 *
 *   http://www.piramidepse.com/
 */
using System;
using System.Text;
using ZXing.Common;

namespace ZXing.OneD.RSS.Expanded.Decoders
{
    /// <summary>
    /// <author>Pablo Orduña, University of Deusto (pablo.orduna@deusto.es)</author>
    /// </summary>
    sealed class AI01393xDecoder : AI01decoder
    {
        private static int HEADER_SIZE = 5 + 1 + 2;
        private static int LAST_DIGIT_SIZE = 2;
        private static int FIRST_THREE_DIGITS_SIZE = 10;

        internal AI01393xDecoder(BitArray information)
            : base(information)
        {
        }

        public override String parseInformation()
        {
            if (this.getInformation().Size < HEADER_SIZE + GTIN_SIZE)
            {
                return null;
            }

            StringBuilder buf = new StringBuilder();

            encodeCompressedGtin(buf, HEADER_SIZE);

            int lastAIdigit =
                this.getGeneralDecoder().extractNumericValueFromBitArray(HEADER_SIZE + GTIN_SIZE, LAST_DIGIT_SIZE);

            buf.Append("(393");
            buf.Append(lastAIdigit);
            buf.Append(')');

            int firstThreeDigits = this.getGeneralDecoder().extractNumericValueFromBitArray(
                HEADER_SIZE + GTIN_SIZE + LAST_DIGIT_SIZE, FIRST_THREE_DIGITS_SIZE);
            if (firstThreeDigits / 100 == 0)
            {
                buf.Append('0');
            }
            if (firstThreeDigits / 10 == 0)
            {
                buf.Append('0');
            }
            buf.Append(firstThreeDigits);

            DecodedInformation generalInformation = this.getGeneralDecoder().decodeGeneralPurposeField(
                HEADER_SIZE + GTIN_SIZE + LAST_DIGIT_SIZE + FIRST_THREE_DIGITS_SIZE, null);
            buf.Append(generalInformation.getNewString());

            return buf.ToString();
        }
    }
}
