Merge branch 'fixing_danbooru' into 'master'

Fixing the way we retrieve images from danbooru

See merge request ldooks/dragon-bot!58

app/lewds.py

@@ -10,11 +10,36 @@ def get_from_danbooru(boards):
 
     returns a URL to an image on danbooru
     """
-    file_path = requests.get(
-        'https://danbooru.donmai.us/posts/random.json?tags=rating%3Aexplicit'
-    ).json()['large_file_url']
 
-    return "https://danbooru.donmai.us{}".format(file_path)
+    request = requests.get(
+        'https://danbooru.donmai.us/posts/random.json?tags=rating%3Aexplicit'
+    ).json()
+
+    # List of tags we dont want images from
+    undesired_tags = [
+        'bestiality',
+        'pee',
+        'futa',
+        'futanari',
+        'yaoi'
+    ]
+    # If any undesired tags show up in the request, try again
+    if not set(request['tag_string'].split()).isdisjoint(undesired_tags):
+        return get_from_danbooru(boards)
+
+    # Return the large firl url if available
+    if 'large_file_url' in request.keys():
+        if request['large_file_url'].startswith('/data/'):
+            return "https://danbooru.donmai.us{}".format(request['large_file_url'])
+        return request['large_file_url']
+
+    if 'file_url' in request.keys():
+        if request['file_url'].startswith('/data/'):
+            return "https://danbooru.donmai.us{}".format(request['file_url'])
+        return request['file_url']
+
+    return get_from_danbooru(boards)
+
 
 def get_lewd(channel_name):
     if 'nsfw' in channel_name: