add randomization to filenames so users cannot overwrite each other's images

suchwow/routes/post.py

@@ -2,6 +2,7 @@ from os import path
 from flask import render_template, Blueprint, request, session, flash
 from flask import send_from_directory, redirect, url_for, current_app
 from werkzeug.utils import secure_filename
+from secrets import token_urlsafe
 from suchwow import wownero
 from suchwow.models import Post, Comment
 from suchwow.utils.decorators import login_required, profile_required
@@ -67,7 +68,10 @@ def create():
             flash("You didn't give your meme a spicy title, bro! You're fuckin up!")
             return redirect(request.url)
         if file and allowed_file(file.filename):
-            filename = secure_filename(file.filename)
+            filename =  "{}-{}".format(
+                token_urlsafe(12),
+                secure_filename(file.filename)
+            )
             save_path_base = path.join(current_app.config["DATA_FOLDER"], "uploads")
             save_path = path.join(save_path_base, filename)
             file.save(save_path)