Add hash checking of files

src/memes.py

@@ -93,14 +93,15 @@ def getCurrentMemeList(force=False):
     if (now - last_checked_all_memes).seconds > 300 or force:
         print("Enough time has elapsed, refreshing meme cache...")
         last_checked_all_memes = now
+
         all_memes.clear()
+        memes_to_md5.clear()
+
         myClient = getClient()
         for obj in myClient.list_objects(S3_BUCKET):
             if not obj.is_dir:
                 #print(f'{obj.object_name}')
                 all_memes.append(obj.object_name)
-                if obj.object_name == 'combat_shotgun_my_beloved1.png':
-                    print("Found! " + obj.etag)
                 memes_to_md5[obj.etag] = obj.object_name
         print(f"Got {len(all_memes)} memes")
     return all_memes
@@ -275,7 +276,6 @@ async def uploadMeme(command, message, client):
 
     uploader_tags = Tags.new_object_tags()
     uploader_tags["uploader"] = message.author.name
-    print(uploader_tags)
 
     all_memes = getCurrentMemeList()
     client = getClient()
@@ -287,20 +287,24 @@ async def uploadMeme(command, message, client):
 
         await file.save("/tmp/" + file.filename)
 
-        #upload the file to S3
-        file_hash = md5(open("/tmp/" + file.filename, 'rb').read())
-        print("Uploaded file has md5 hash of " + file_hash.hexdigest())
-        if file_hash not in memes_to_md5:
-            client.fput_object(bucket_name=S3_BUCKET,
-                               object_name=file.filename,
-                               file_path="/tmp/" + file.filename,
-                               tags=uploader_tags,
-                               content_type=None)
-        else:
-            return "Found that meme already! (aka " + memes_to_md5[file_hash] + ")"
+        result = client.fput_object(bucket_name=S3_BUCKET,
+                           object_name=file.filename,
+                           file_path="/tmp/" + file.filename,
+                           tags=uploader_tags,
+                           content_type=None)
+
+        if result.etag in memes_to_md5:
+            print("Already have that meme, etag is (" + result.etag + ")")
+
+            client.remove_object(bucket_name=S3_BUCKET,
+                    object_name=file.filename)
+            return "That meme is already in the cache (it's called " + memes_to_md5[result.etag] + ")"
 
         os.remove("/tmp/" + file.filename)
 
     getCurrentMemeList(force=True)
 
     return "Thanks got your memes!"
+
+
+