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1 using System.IO;
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2 using System.Net;
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3 using AltNetHispano.Agendas.Configurations;
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4
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5 namespace AltNetHispano.Agendas.Google
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6 {
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7 public class GUrlShortenerAdapter
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8 {
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9 private readonly ShortenConfigurationElement _config;
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10
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11 public GUrlShortenerAdapter()
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12 {
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13 _config = AgendasConfigurationManager.Publicadores.Google.Shorten;
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14 }
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15
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16 public string GetShortUrl(string url)
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17 {
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18 WebRequest request = WebRequest.Create(_config.UrlAPI);
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19 request.Method = WebRequestMethods.Http.Post;
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20 request.ContentType = "application/json";
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21
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22 using(var writer = new StreamWriter(request.GetRequestStream()))
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23 {
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24 var json = string.Format("{{\"longUrl\": \"{0}\"}}", url);
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25 writer.Write(json);
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26 }
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27
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28 var response = request.GetResponse();
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29
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30 using(var reader = new StreamReader(response.GetResponseStream()))
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31 {
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32 const string prefix = "\"id\": \"";
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33
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34 var json = reader.ReadToEnd();
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35
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36 var start = json.IndexOf(prefix) + prefix.Length;
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37 if (start>prefix.Length)
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38 {
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39 var length = json.IndexOf("\",", start) - start;
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40
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41 if (length>0)
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42 return json.Substring(start, length);
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43 }
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44 }
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45 return string.Empty;
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46 }
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47 }
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48 } |
