ShareLinks.cs | searchcode

/DotNetAge2/DNA.Mvc.UI/Extensions/ShareLinks.cs

#
C# | 226 lines | 177 code | 19 blank | 30 comment | 19 complexity | 8186d476b428ce1772b5803a27b1527d MD5 | raw file
Possible License(s): GPL-2.0

//  Copyright (c) 2011 Ray Liang (http://www.dotnetage.com)

//  Dual licensed under the MIT and GPL licenses:

//  http://www.opensource.org/licenses/mit-license.php

//  http://www.gnu.org/licenses/gpl.html

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Web.WebPages;

using System.IO;

using System.Web;

using System.Web.WebPages.Scope;

using System.Web.Helpers;

using System.Net;



namespace DNA.Mvc.UI

{

    public class ShareLinks : HelperPage

    {

        static ShareLinks()

        {

            _bitlyApiKey = new object();

            _bitlyLogin = new object();

            //_allSites = new Lazy<IEnumerable<LinkShareSite>>(() => from site in (LinkShareSite[]) Enum.GetValues(typeof(LinkShareSite))

            //    where site != LinkShareSite.All

            //    select site);

        }



        public ShareLinks() { }



        public static HelperResult GetHtml(string pageTitle, string pageLinkBack = null, string twitterUserName = null, string additionalTweetText = null)

        {

            return new HelperResult(delegate(TextWriter __razor_helper_writer)

            {

                var Url = UrlUtility.CreateUrlHelper();

                string str;

                if (pageTitle.IsEmpty())

                    throw new ArgumentNullException("pageTitle");



                ConstructPageLinkBack(ref pageLinkBack, out str);

                pageLinkBack = HttpUtility.UrlEncode(pageLinkBack);

                str = HttpUtility.UrlEncode(str);

                pageTitle = HttpUtility.UrlEncode(pageTitle);

                //using (IEnumerator<LinkShareSite> enumerator = GetSitesInOrder(linkSites).GetEnumerator())

                //{

                //    while (enumerator.MoveNext())

                //    {

                //        switch (enumerator.Current)

                //        {

                //            case LinkShareSite.Delicious:

                HelperPage.WriteLiteralTo(__razor_helper_writer, "<a href=\"http://delicious.com/save?v=5&amp;noui&amp;jump=close&amp;url=");

                HelperPage.WriteTo(__razor_helper_writer, str);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "&amp;title=");

                HelperPage.WriteTo(__razor_helper_writer, pageTitle);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "\" target=\"_blank\" title=\"Add to del.icio.us\">\r\n  <img alt=\"Add to del.icio.us\" src=\"" + Url.Content("~/content/images/icon_delicious_16.png") + "\" style=\"border:0; height:16px; width:16px; margin:0 1px;\" title=\"Add to del.icio.us\" />\r\n                </a>\r\n");

                //   break;



                //  case LinkShareSite.Digg:

                HelperPage.WriteLiteralTo(__razor_helper_writer, "<a href=\"http://digg.com/submit?url=");

                HelperPage.WriteTo(__razor_helper_writer, pageLinkBack);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "&amp;title=");

                HelperPage.WriteTo(__razor_helper_writer, pageTitle);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "\" target=\"_blank\" title=\"Digg!\">\r\n <img alt=\"Digg!\" src=\"" + Url.Content("~/content/images/icon_digg_16.gif") + "\" style=\"border:0; height:16px; width:16px; margin:0 1px;\" title=\"Digg!\" />\r\n                </a>\r\n");

                //      break;



                //    case LinkShareSite.GoogleBuzz:

                HelperPage.WriteLiteralTo(__razor_helper_writer, " <a href=\"http://www.google.com/reader/link?url=");

                HelperPage.WriteTo(__razor_helper_writer, str);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "&amp;title=");

                HelperPage.WriteTo(__razor_helper_writer, pageTitle);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "\" target=\"_blank\" title=\"Share on Google Buzz\">\r\n <img alt=\"Share on Google Buzz\" src=\"" + Url.Content("~/content/images/icon_google_buzz_16.jpg") + "\" style=\"border:0; height:16px; width:16px; margin:0 1px;\" title=\"Share on Google Buzz\" />\r\n                </a>\r\n");

                //       break;



                //    case LinkShareSite.Facebook:

                HelperPage.WriteLiteralTo(__razor_helper_writer, "<a href=\"http://www.facebook.com/sharer.php?u=");

                HelperPage.WriteTo(__razor_helper_writer, str);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "&amp;t=");

                HelperPage.WriteTo(__razor_helper_writer, pageTitle);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "\" target=\"_blank\" title=\"Share on Facebook\">\r\n <img alt=\"Share on Facebook\" src=\"" + Url.Content("~/content/images/ico_facebook_16.ico") + "\" style=\"border:0; height:16px; width:16px; margin:0 1px;\" title=\"Share on Facebook\" />\r\n                </a>\r\n");

                //      break;



                //     case LinkShareSite.Reddit:

                HelperPage.WriteLiteralTo(__razor_helper_writer, "<a href=\"http://reddit.com/submit?url=");

                HelperPage.WriteTo(__razor_helper_writer, pageLinkBack);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "&amp;title=");

                HelperPage.WriteTo(__razor_helper_writer, pageTitle);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "\" target=\"_blank\" title=\"Reddit!\">\r\n <img alt=\"Reddit!\" src=\"" + Url.Content("~/content/images/ico_reddit.ico") + "\" style=\"border:0; height:16px; width:16px; margin:0 1px;\" title=\"Reddit!\" />\r\n                </a>\r\n");

                //      break;



                //     case LinkShareSite.StumbleUpon:

                HelperPage.WriteLiteralTo(__razor_helper_writer, "<a href=\"http://www.stumbleupon.com/submit?url=");

                HelperPage.WriteTo(__razor_helper_writer, pageLinkBack);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "&amp;title=");

                HelperPage.WriteTo(__razor_helper_writer, pageTitle);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "\" target=\"_blank\" title=\"Stumble it!\">\r\n <img alt=\"Stumble it!\" src=\"" + Url.Content("~/content/images/icon_su_round_16.gif") + "\" style=\"border:0; height:16px; width:16px; margin:0 1px;\" title=\"Stumble it!\" />\r\n                </a>\r\n");

                //       break;



                //      case LinkShareSite.Twitter:



                string str2 = string.Empty;

                if (!twitterUserName.IsEmpty())

                {

                    str2 = str2 + ", (via @@" + twitterUserName + ")";

                }

                if (!additionalTweetText.IsEmpty())

                {

                    str2 = str2 + ' ' + additionalTweetText;

                }

                str2 = HttpUtility.UrlEncode(str2);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "                <a href=\"http://twitter.com/home/?status=");

                HelperPage.WriteTo(__razor_helper_writer, pageTitle);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "%3a+");

                HelperPage.WriteTo(__razor_helper_writer, str);

                HelperPage.WriteTo(__razor_helper_writer, str2);

                HelperPage.WriteLiteralTo(__razor_helper_writer, "\" target=\"_blank\" title=\"Share on Twitter\">\r\n                    <img alt=\"Share on Twitter\" src=\"" + Url.Content("~/content/images/ico_twitter_16.ico") + "\" style=\"border:0; height:16px; width:16px; margin:0 1px;\" title=\"Share on Twitter\" />\r\n                </a>\r\n");

                //           break;



                //     }

                //}

                //}

            });



        }



        private static string GetShortenedUrl(string pageLinkBack)

        {

            if (!BitlyLogin.IsEmpty() && !BitlyApiKey.IsEmpty())

            {

                string str = HttpUtility.UrlEncode(pageLinkBack);

                string key = "Bitly_pageLinkBack_" + BitlyApiKey + "_" + str;

                string webResponse = WebCache.Get(key) as string;

                if (webResponse != null)

                {

                    return webResponse;

                }

                string address = "http://api.bit.ly/v3/shorten?format=txt&longUrl=" + str + "&login=" + BitlyLogin + "&apiKey=" + BitlyApiKey;

                try

                {

                    webResponse = GetWebResponse(address);

                }

                catch (WebException)

                {

                    return pageLinkBack;

                }

                if (webResponse != null)

                {

                    WebCache.Set(key, webResponse, 20, true);

                    return webResponse;

                }

            }

            return pageLinkBack;

        }



        internal static readonly object _bitlyApiKey;

        internal static readonly object _bitlyLogin;



        public static string BitlyApiKey

        {

            get

            {

                return (ScopeStorage.CurrentScope[_bitlyApiKey] as string);

            }

            set

            {

                if (value == null)

                {

                    throw new ArgumentNullException("value");

                }

                ScopeStorage.CurrentScope[_bitlyApiKey] = value;

            }

        }



        public static string BitlyLogin

        {

            get

            {

                return (ScopeStorage.CurrentScope[_bitlyLogin] as string);

            }

            set

            {

                if (value == null)

                {

                    throw new ArgumentNullException("value");

                }

                ScopeStorage.CurrentScope[_bitlyLogin] = value;

            }

        }



        private static string GetWebResponse(string address)

        {

            string str;

            WebRequest request = WebRequest.Create(address);

            request.Method = "GET";

            request.Timeout = 0x1388;

            using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())

            {

                if (response.StatusCode != HttpStatusCode.OK)

                {

                    str = null;

                }

                else

                {

                    using (Stream stream = response.GetResponseStream())

                    {

                        using (MemoryStream stream2 = new MemoryStream())

                        {

                            stream.CopyTo(stream2);

                            str = Encoding.UTF8.GetString(stream2.ToArray());

                        }

                    }

                }

            }

            return str;

        }



        private static void ConstructPageLinkBack(ref string pageLinkBack, out string shortenedUrl)

        {

            HttpContext current = HttpContext.Current;

            if ((pageLinkBack == null) && (current != null))

            {

                pageLinkBack = current.Request.Url.GetComponents(UriComponents.Path | UriComponents.SchemeAndServer, UriFormat.Unescaped);

            }

            shortenedUrl = GetShortenedUrl(pageLinkBack);

        }

    }

}