refactor(main.rs): create the fetch_from_internet function

src/main.rs

@@ -16,30 +16,38 @@ const PLATFORM: &'static str = "osx";
 #[cfg(not(target_os = "macos"))]
 const PLATFORM: &'static str = "linux";
 
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    if args.len() < 2 {
-        let error = "Specify an argument!";
-        println!("{}", format!("{error} \nExample: \n$ tldr ls", error = Red.paint(error).to_string()));
-        process::exit(1);
-    }
-
-    let common_url = format!("https://raw.github.com/tldr-pages/tldr/master/pages/common/{page}.md", page = args[1]);
-    let platform_url = format!("https://raw.github.com/tldr-pages/tldr/master/pages/{platform}/{page}.md", page = args[1], platform=PLATFORM);
+fn fetch_from_internet(command: &str) -> String {
+    let common_url = format!("https://raw.github.com/tldr-pages/tldr/master/pages/common/{page}.md", page = command);
+    let platform_url = format!("https://raw.github.com/tldr-pages/tldr/master/pages/{platform}/{page}.md", page = command, platform=PLATFORM);
 
     let client = Client::new();
 
-    // Creating an outgoing request.
+    // Fetch common tldr
     let mut res = match client.get(&common_url).send() {
         Ok(res) => res,
+
+        // Fetch platform tldr if 404
         _ => client.get(&platform_url).send().unwrap(),
     };
 
     // Read the Response.
     let mut the_tldr = String::new();
     res.read_to_string(&mut the_tldr).unwrap();
 
+    the_tldr
+}
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    if args.len() < 2 {
+        let error = "Specify an argument!";
+        println!("{}", format!("{error} \nExample: \n$ tldr ls", error = Red.paint(error).to_string()));
+        std::process::exit(1);
+    }
+
+    let the_tldr = fetch_from_internet(&args[1]);
+
     render(&the_tldr);
 }