initial commit

src/commands/get_account_nrs.rs

@@ -0,0 +1,26 @@
+use std::io::Write;
+use std::net::TcpStream;
+use std::sync::{Arc, RwLock};
+
+use anyhow::Result;
+
+use crate::bank::Bank;
+use crate::commands::Command;
+use crate::protocol;
+
+pub struct GetAccountNrs;
+
+impl Command for GetAccountNrs {
+    fn execute(&self, bank: Arc<RwLock<Bank>>, _: &[u8], mut stream: &TcpStream) -> Result<usize> {
+        info!("getting account numbers...");
+
+        let bank = bank.read().unwrap();
+        let nrs: Vec<String> = bank.account_numbers()
+            .into_iter()
+            .collect();
+
+        let written = stream.write(&protocol::account_nrs(&nrs))?;
+
+        Ok(written)
+    }
+}