make log settable via multiple -v switches

src/main.rs

@@ -39,21 +39,26 @@ struct Args {
     origin: Option<String>,
     #[arg(short, long)]
     agent: Option<String>,
+    #[arg(short, action = clap::ArgAction::Count, help = "Increase verbosity")]
+    verbose: u8,
 }
 
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
+    let args = Args::parse();
+
+    let log_level = match args.verbose {
+        0 => "error",
+        1 => "info",
+        _ => "debug",
+    };
+
     let env = Env::default()
-            . filter_or("LOG_LEVEL", "error")
+            . filter_or("LOG_LEVEL", log_level)
             . write_style_or("LOG_STYLE", "always");
     env_logger::init_from_env(env);
 
-    info!("Parse command line arguments...");
-
-    let args = Args::parse();
-    debug!("Arguments: {:?}", args);
-
     let name = args.name.as_path();
 
     if name.file_name() != Some(OsStr::new(name)) {