Remove unwrap

src/main.rs

@@ -45,12 +45,11 @@ const USER_AGENT_VALUE: &str =
     "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:87.0) Gecko/20100101 Firefox/87.0";
 const LOL_CHAMPS_DIR: &str = ".\\champs";
 
-fn main() {
+fn main() -> Result<(), Box<dyn std::error::Error>> {
     SimpleLogger::new()
         .with_level(LevelFilter::Info)
         .with_module_level("ureq", LevelFilter::Error)
-        .init()
-        .unwrap();
+        .init()?;
 
     info!("CGG Item Sets");
 
@@ -58,7 +57,7 @@ fn main() {
         Ok(x) => x,
         Err(_e) => PathBuf::from(LOL_CHAMPS_DIR),
     };
-    info!("LoL Champs Folder: {}", lol_champs_dir.to_str().unwrap());
+    info!("LoL Champs Folder: {}", lol_champs_dir.to_str().unwrap_or(LOL_CHAMPS_DIR));
 
     let client = ureq::AgentBuilder::new()
         .timeout(Duration::from_secs(10))
@@ -67,10 +66,8 @@ fn main() {
     let realm: Realm = client
         .get("https://ddragon.leagueoflegends.com/realms/euw.json")
         .set(USER_AGENT_KEY, USER_AGENT_VALUE)
-        .call()
-        .unwrap()
-        .into_json()
-        .unwrap();
+        .call()?
+        .into_json()?;
     info!("LoL version: {}", realm.v);
 
     let champion: Champion = client
@@ -79,10 +76,8 @@ fn main() {
             realm.v
         ))
         .set(USER_AGENT_KEY, USER_AGENT_VALUE)
-        .call()
-        .unwrap()
-        .into_json()
-        .unwrap();
+        .call()?
+        .into_json()?;
     info!("LoL numbers of champs: {}", champion.data.len());
 
     let data_sources: [Box<dyn DataSource>; 3] = [
@@ -129,6 +124,7 @@ fn main() {
             }
         }
     }
+    Ok(())
 }
 
 fn get_champ_from_key(champs: &Champion, key: &str) -> String {