Adds temporary fixes for #1

src/bin/websurfx.rs

@@ -1,12 +1,45 @@
+use std::ops::RangeInclusive;
+
 use websurfx::server::routes;
 
 use actix_files as fs;
 use actix_web::{web, App, HttpServer};
+use clap::{command, Parser};
 use handlebars::Handlebars;
 
+#[derive(Parser, Debug, Default)]
+#[clap(author = "neon_arch", version, about = "Websurfx server application")]
+#[command(propagate_version = true)]
+struct CliArgs {
+    #[clap(default_value_t = 8080, short, long,value_parser = is_port_in_range)]
+    /// provide port number in range [1024-65536] to launch the server on.
+    port: u16,
+}
+
+const PORT_RANGE: RangeInclusive<usize> = 1024..=65535;
+
+fn is_port_in_range(s: &str) -> Result<u16, String> {
+    let port: usize = s
+        .parse()
+        .map_err(|_| format!("`{s}` is not a valid port number"))?;
+    if PORT_RANGE.contains(&port) {
+        Ok(port as u16)
+    } else {
+        Err(format!(
+            "port not found in range {}-{}",
+            PORT_RANGE.start(),
+            PORT_RANGE.end()
+        ))
+    }
+}
+
 // The function that launches the main server and handle routing functionality
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
+    let args = CliArgs::parse();
+
+    println!("started server on port {}", args.port);
+
     let mut handlebars: Handlebars = Handlebars::new();
 
     handlebars
@@ -29,7 +62,7 @@ async fn main() -> std::io::Result<()> {
             .default_service(web::route().to(routes::not_found)) // error page
     })
     // Start server on 127.0.0.1:8080
-    .bind(("127.0.0.1", 8080))?
+    .bind(("127.0.0.1", args.port))?
     .run()
     .await
 }