Replace YouTube links, so they get less data

inbox.py

@@ -59,6 +59,7 @@ from posts import sendToFollowersThread
 from webinterface import individualPostAsHtml
 from webinterface import getIconsDir
 from question import questionUpdateVotes
+from media import replaceYouTube
 
 def storeHashTags(baseDir: str,nickname: str,postJsonObject: {}) -> None:
     """Extracts hashtags from an incoming post and updates the
@@ -1848,6 +1849,9 @@ def inboxAfterCapabilities(recentPostsCache: {},maxRecentPosts: int, \
         postJsonObject=messageJson
 
     if validPostContent(postJsonObject,maxMentions,maxEmoji):
+        # replace YouTube links, so they get less tracking data
+        replaceYouTube(postJsonObject)
+
         # list of indexes to be updated
         updateIndexList=['inbox']
         populateReplies(baseDir,httpPrefix,domain,postJsonObject,maxReplies,debug)

media.py

@@ -19,6 +19,19 @@ from shutil import copyfile
 from shutil import rmtree
 from shutil import move
 
+def replaceYouTube(postJsonObject: {}):
+    """Replace YouTube with invidio.us
+    This denies Google some, but not all, tracking data
+    """
+    if not isinstance(postJsonObject['object'], dict):
+        return
+    if not postJsonObject['object'].get('content'):
+        return
+    if 'www.youtube.com' not in postJsonObject['object']['content']:
+        return
+    postJsonObject['object']['content']= \
+        postJsonObject['object']['content'].replace('www.youtube.com','invidio.us')
+
 def removeMetaData(imageFilename: str,outputFilename: str) -> None:
     """Attempts to do this with pure python didn't work well,
     so better to use a dedicated tool if one is installed