refactor: optimize import and last_tweet_id var

src/lib.rs

@@ -33,10 +33,7 @@ pub async fn run(config: Config) {
     // open the SQLite connection
     let conn = Connection::open(&config.scootaloo.db_path).unwrap();
     // retrieve the last tweet ID for the username
-    let last_tweet_id = match read_state(&conn, None).unwrap() {
+    let last_tweet_id = read_state(&conn, None).unwrap().map(|s| s.tweet_id);
-        Some(i) => Some(i.tweet_id),
-        None => None,
-    };
 
     // get OAuth2 token
     let token = get_oauth2_token(&config.twitter);

src/mastodon.rs

@@ -17,7 +17,6 @@ use elefren::{
     scopes::Scopes,
 };
 
-
 /// Decodes the Twitter mention to something that will make sense once Twitter has joined the
 /// Fediverse
 fn twitter_mentions(ums: &Vec<MentionEntity>) -> HashMap<String, String> {

src/twitter.rs

@@ -1,12 +1,8 @@
-// auto-imports
 use crate::ScootalooError;
 use crate::config::TwitterConfig;
 use crate::util::cache_media;
 
-// std
 use std::error::Error;
-
-// egg-mode
 use egg_mode::{
     Token,
     KeyPair,

src/util.rs

@@ -1,11 +1,6 @@
-// std
 use std::error::Error;
 use crate::ScootalooError;
-
-// reqwest
 use reqwest::Url;
-
-// tokio
 use tokio::{
     io::copy,
     fs::{File, create_dir_all},