/*
* Copyright 2008 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.
*/

using System;
using System.Collections.Generic;

namespace ZXing.Client.Result
{
   /// <summary> Implements KDDI AU's address book format. See
   /// <a href="http://www.au.kddi.com/ezfactory/tec/two_dimensions/index.html">
   /// http://www.au.kddi.com/ezfactory/tec/two_dimensions/index.html</a>.
   /// (Thanks to Yuzo for translating!)
   /// 
   /// </summary>
   /// <author>  Sean Owen
   /// </author>
   /// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source 
   /// </author>
   sealed class AddressBookAUResultParser : ResultParser
   {
      override public ParsedResult parse(ZXing.Result result)
      {
         var rawText = result.Text;
         // MEMORY is mandatory; seems like a decent indicator, as does end-of-record separator CR/LF
         if (rawText == null || rawText.IndexOf("MEMORY") < 0 || rawText.IndexOf("\r\n") < 0)
         {
            return null;
         }

         // NAME1 and NAME2 have specific uses, namely written name and pronunciation, respectively.
         // Therefore we treat them specially instead of as an array of names.
         var name = matchSinglePrefixedField("NAME1:", rawText, '\r', true);
         var pronunciation = matchSinglePrefixedField("NAME2:", rawText, '\r', true);

         var phoneNumbers = matchMultipleValuePrefix("TEL", 3, rawText, true);
         var emails = matchMultipleValuePrefix("MAIL", 3, rawText, true);
         var note = matchSinglePrefixedField("MEMORY:", rawText, '\r', false);
         var address = matchSinglePrefixedField("ADD:", rawText, '\r', true);
         var addresses = address == null ? null : new [] { address };
         return new AddressBookParsedResult(maybeWrap(name),
                                            null,
                                            pronunciation,
                                            phoneNumbers,
                                            null,
                                            emails,
                                            null,
                                            null,
                                            note,
                                            addresses,
                                            null,
                                            null,
                                            null,
                                            null,
                                            null,
                                            null);
      }

      private static String[] matchMultipleValuePrefix(String prefix, int max, String rawText, bool trim)
      {
         IList<string> values = null;
         for (int i = 1; i <= max; i++)
         {
            var value = matchSinglePrefixedField(prefix + i + ':', rawText, '\r', trim);
            if (value == null)
            {
               break;
            }
            if (values == null)
            {
               values = new List<string>();
            }
            values.Add(value);
         }
         if (values == null)
         {
            return null;
         }
         return SupportClass.toStringArray(values);
      }
   }
}