using System.Collections.Generic;

/*
 * Copyright 2007 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.
 */

namespace com.google.zxing.client.result
{

	using Result = com.google.zxing.Result;


	/// <summary>
	/// Represents a result that encodes an e-mail address, either as a plain address
	/// like "joe@example.org" or a mailto: URL like "mailto:joe@example.org".
	/// 
	/// @author Sean Owen
	/// </summary>
	public sealed class EmailAddressResultParser : ResultParser
	{

	  public override ParsedResult parse(Result result)
	  {
		string rawText = getMassagedText(result);
		string emailAddress;
		if (rawText.StartsWith("mailto:") || rawText.StartsWith("MAILTO:"))
		{
		  // If it starts with mailto:, assume it is definitely trying to be an email address
		  emailAddress = rawText.Substring(7);
		  int queryStart = emailAddress.IndexOf('?');
		  if (queryStart >= 0)
		  {
			emailAddress = emailAddress.Substring(0, queryStart);
		  }
		  IDictionary<string, string> nameValues = parseNameValuePairs(rawText);
		  string subject = null;
		  string body = null;
		  if (nameValues != null)
		  {
			if (emailAddress.Length == 0)
			{
			  emailAddress = nameValues["to"];
			}
			subject = nameValues["subject"];
			body = nameValues["body"];
		  }
		  return new EmailAddressParsedResult(emailAddress, subject, body, rawText);
		}
		else
		{
		  if (!EmailDoCoMoResultParser.isBasicallyValidEmailAddress(rawText))
		  {
			return null;
		  }
		  emailAddress = rawText;
		  return new EmailAddressParsedResult(emailAddress, null, null, "mailto:" + emailAddress);
		}
	  }

	}
}