/*
 * 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;

namespace ZXing.Client.Result
{
   /// <summary>
   /// <p>Parses an "smsto:" URI result, whose format is not standardized but appears to be like:
   /// {@code smsto:number(:body)}.</p>
   /// <p>This actually also parses URIs starting with "smsto:", "mmsto:", "SMSTO:", and
   /// "MMSTO:", and treats them all the same way, and effectively converts them to an "sms:" URI
   /// for purposes of forwarding to the platform.</p>
   /// </summary>
   /// <author>Sean Owen</author>
   internal sealed class SMSTOMMSTOResultParser : ResultParser
   {
      override sealed public ParsedResult parse(ZXing.Result result)
      {
         String rawText = result.Text;
         if (!(rawText.StartsWith("smsto:") || rawText.StartsWith("SMSTO:") ||
               rawText.StartsWith("mmsto:") || rawText.StartsWith("MMSTO:")))
         {
            return null;
         }
         // Thanks to dominik.wild for suggesting this enhancement to support
         // smsto:number:body URIs
         String number = rawText.Substring(6);
         String body = null;
         int bodyStart = number.IndexOf(':');
         if (bodyStart >= 0)
         {
            body = number.Substring(bodyStart + 1);
            number = number.Substring(0, bodyStart);
         }
         return new SMSParsedResult(number, null, null, body, true);
      }
   }
}