Add rewriting for twitter.com

README.md

@@ -2,6 +2,7 @@ This project is a *fork* of [the original BirdsiteLIVE from NicolasConstant](htt
 
 * Rework About page
 * Cache Tweets so that, for example, Announces do not hit rate limits
+* Allow replacing and redirecting to twitter.com in Tweets to other domains (i.e. Nitter instances)
 
 This fork is also available as a Docker image as `pasture/birdsitelive`.
 

VARIABLES.md

@@ -46,7 +46,8 @@ If both whitelisting and blacklisting are set, only the whitelisting will be act
 * `Instance:Name` (default: BirdsiteLIVE) the name of the instance
 * `Instance:ResolveMentionsInProfiles` (default: true) to enable or disable mentions parsing in profile's description. Resolving it will consume more User's API calls since newly discovered account can also contain references to others accounts as well. On a big instance it is recommended to disable it.
 * `Instance:PublishReplies` (default: false) to enable or disable replies publishing.
-* `Instance:UnlistedTwitterAccounts` (default: null) to enable unlisted publication for selected twitter accounts, separated by `;` (please limit this to brands and other public profiles). 
+* `Instance:UnlistedTwitterAccounts` (default: null) to enable unlisted publication for selected twitter accounts, separated by `;` (please limit this to brands and other public profiles).
+* `Instance:TwitterDomain` (default: twitter.com) redirect to a different domain (i.e. a Nitter instance) instead of Twitter
 
 # Docker Compose full example
 
@@ -60,7 +61,7 @@ networks:
 
 services:
     server:
-        image: nicolasconstant/birdsitelive:latest
+        image: pasture/birdsitelive:latest
         [...]
         environment:
             - Instance:Domain=domain.name
@@ -78,11 +79,12 @@ services:
 +           - Instance:ResolveMentionsInProfiles=false
 +           - Instance:PublishReplies=true
 +           - Instance:UnlistedTwitterAccounts=cocacola;twitter
++           - Instance:TwitterDomain=twiiit.com
         networks:
         [...]
 
     db:
-        image: postgres:9.6
+        image: postgres:13
         [...]
 ```
 

src/BirdsiteLive.Common/Settings/InstanceSettings.cs

@@ -10,5 +10,7 @@
         public int MaxUsersCapacity { get; set; }
 
         public string UnlistedTwitterAccounts { get; set; }
+
+        public string TwitterDomain { get; set; }
     }
 }

src/BirdsiteLive.Twitter/Extractors/TweetExtractor.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using BirdsiteLive.Common.Settings;
 using BirdsiteLive.Twitter.Models;
 using Tweetinvi.Models;
 using Tweetinvi.Models.Entities;
@@ -15,6 +16,15 @@ namespace BirdsiteLive.Twitter.Extractors
 
     public class TweetExtractor : ITweetExtractor
     {
+        private readonly InstanceSettings _instanceSettings;
+
+        #region Ctor
+        public TweetExtractor(InstanceSettings instanceSettings)
+        {
+            this._instanceSettings = instanceSettings;
+        }
+        #endregion
+
         public ExtractedTweet Extract(ITweet tweet)
         {
             var extractedTweet = new ExtractedTweet
@@ -84,7 +94,17 @@ namespace BirdsiteLive.Twitter.Extractors
 
             // Expand URLs
             foreach (var url in tweet.Urls.OrderByDescending(x => x.URL.Length))
+            {
+                var linkUri = new UriBuilder(url.ExpandedURL);
+
+                if (linkUri.Host == "twitter.com")
+                {
+                    linkUri.Host = _instanceSettings.TwitterDomain;
+                    url.ExpandedURL = linkUri.Uri.ToString();
+                }
+
                 message = message.Replace(url.URL, url.ExpandedURL);
+            }
 
             return message;
         }

src/BirdsiteLive/Controllers/UsersController.cs

@@ -120,7 +120,7 @@ namespace BirdsiteLive.Controllers
                 }
             }
 
-            return Redirect($"https://twitter.com/{id}/status/{statusId}");
+            return Redirect($"https://{_instanceSettings.TwitterDomain}/{id}/status/{statusId}");
         }
 
         [Route("/users/{id}/inbox")]

src/BirdsiteLive/appsettings.json

@@ -21,7 +21,8 @@
     "ResolveMentionsInProfiles": true,
     "PublishReplies": false,
     "MaxUsersCapacity": 1500,
-    "UnlistedTwitterAccounts":  null 
+    "UnlistedTwitterAccounts": null,
+    "TwitterDomain": "twitter.com"
   },
   "Db": {
     "Type": "postgres",
@@ -39,5 +40,5 @@
     "FollowersBlackListing": null,
     "TwitterAccountsWhiteListing": null,
     "TwitterAccountsBlackListing": null
-  } 
+  }
 }