Undoing likes via the web interface

daemon.py

@@ -641,6 +641,7 @@ class PubServer(BaseHTTPRequestHandler):
                self.server.GETbusy=False
                return
 
+        # announce/repeat from the web interface
         if authorized and '?repeat=' in self.path:
             repeatUrl=self.path.split('?repeat=')[1]
             actor=self.path.split('?repeat=')[0]
@@ -668,6 +669,57 @@ class PubServer(BaseHTTPRequestHandler):
             self._redirect_headers(actor+'/inbox',cookie)
             return
 
+        # like from the web interface icon
+        if authorized and '?like=' in self.path:
+            likeUrl=self.path.split('?like=')[1]
+            actor=self.path.split('?like=')[0]
+            self.postToNickname=getNicknameFromActor(actor)
+            if not self.server.session:
+                self.server.session= \
+                    createSession(self.server.domain,self.server.port,self.server.useTor)
+            likeActor=self.server.httpPrefix+'://'+self.server.fullDomain+'/users/'+self.postToNickname
+            likeJson= {
+                'type': 'Like',
+                'actor': likeActor,
+                'object': likeUrl,
+                'to': [likeActor+'/followers'],
+                'cc': []
+            }    
+            if likeJson:
+                self._postToOutbox(likeJson)
+            self.server.GETbusy=False
+            self._redirect_headers(actor+'/inbox',cookie)
+            return
+
+        # undo a like from the web interface icon
+        if authorized and '?unlike=' in self.path:
+            likeUrl=self.path.split('?unlike=')[1]
+            actor=self.path.split('?unlike=')[0]
+            self.postToNickname=getNicknameFromActor(actor)
+            if not self.server.session:
+                self.server.session= \
+                    createSession(self.server.domain,self.server.port,self.server.useTor)
+            undoActor=self.server.httpPrefix+'://'+self.server.fullDomain+'/users/'+self.postToNickname
+            undoLikeJson= {
+                'type': 'Undo',
+                'actor': undoActor,
+                'object': {
+                    'type': 'Like',
+                    'actor': undoActor,
+                    'object': likeUrl,
+                    'to': [undoActor+'/followers'],
+                    'cc': []
+                },
+                'to': [undoActor+'/followers'],
+                'cc': []
+            }    
+            if undoLikeJson:
+                self._postToOutbox(undoLikeJson)
+            self.server.GETbusy=False
+            self._redirect_headers(actor+'/inbox',cookie)
+            return
+
+        # reply from the web interface icon
         inReplyTo=None
         if authorized and '?replyto=' in self.path:
             inReplyTo=self.path.split('?replyto=')[1]

like.py

@@ -59,6 +59,21 @@ def undoLikesCollectionEntry(postFilename: str,objectUrl: str, actor: str,debug:
             with open(postFilename, 'w') as fp:
                 commentjson.dump(postJsonObject, fp, indent=4, sort_keys=True)            
 
+def likedByPerson(postJsonObject: {}, nickname: str,domain: str) -> bool:
+    """Returns True if the given post is liked by the given actor
+    """
+    if not postJsonObject.get('object'):
+        return False
+    if not isinstance(postJsonObject['object'], dict):
+        return False
+    if not postJsonObject['object'].get('likes'):
+        return False
+    actorMatch=domain+'/users/'+nickname
+    for item in postJsonObject['object']['likes']['items']:
+        if item['actor'].endswith(actorMatch):
+            return True
+    return False
+
 def updateLikesCollection(postFilename: str,objectUrl: str, actor: str,debug: bool) -> None:
     """Updates the likes collection within a post
     """

webinterface.py

@@ -22,6 +22,7 @@ from posts import getUserUrl
 from posts import parseUserFeed
 from session import getJson
 from auth import createPassword
+from like import likedByPerson
 
 def htmlGetLoginCredentials(loginParams: str,lastLoginTime: int) -> (str,str):
     """Receives login credentials via HTTPServer POST
@@ -564,9 +565,14 @@ def individualPostAsHtml(baseDir: str, \
         announceStr= \
             '<a href="/users/'+nickname+'?repeat='+postJsonObject['object']['id']+'" title="Repeat this post">' \
             '<img src="/icons/repeat_inactive.png"/></a>'
+        likeIcon='like_inactive.png'
+        likeLink='like'
+        if likedByPerson(postJsonObject,nickname,fullDomain):
+            likeIcon='like.png'
+            likeLink='unlike'
         likeStr= \
-            '<a href="/users/'+nickname+'?like='+postJsonObject['object']['id']+'" title="Like this post">' \
+            '<a href="/users/'+nickname+'?'+likeLink+'='+postJsonObject['object']['id']+'" title="Like this post">' \
-            '<img src="/icons/like_inactive.png"/></a>'
+            '<img src="/icons/'+likeIcon+'"/></a>'
 
     if showIcons:
         footerStr='<div class="'+containerClassIcons+'">'