Add multi-user and cron support.

src/joann-pupper-bot/reddit.cr

@@ -45,16 +45,3 @@ class RedditResponse
       .select { |it| yield it }
   end
 end
-
-def filter_reddit_json(json, completed, extensions = ["png", "jpeg"])
-  json.data.posts_matching do |post|
-    extensions.any? { |it| post.url.ends_with? it } && !completed.includes? post.url
-  end
-end
-
-def get_reddit_post(subreddit, completed)
-    return nil unless json = RedditResponse.from_subreddit subreddit
-    return nil unless post = filter_reddit_json(json, completed).first?
-    completed.push(post.name)
-    return { post.url, post.title }
-end