Print secret message to tty

If stdout is not a tty (i.e it is a pipe to another process or it writes
to another file) a normal message will be printed.

crates/keygen/Cargo.toml

@@ -12,6 +12,7 @@ description = "Create to create command line utilities for fuel-core key managem
 
 [dependencies]
 anyhow = { workspace = true }
+atty = "0.2.14"
 clap = { workspace = true, features = ["derive", "env"] }
 fuel-core-types = { workspace = true, features = ["serde", "random"] }
 libp2p-identity = { version = "0.2.4", features = ["secp256k1", "peerid"] }

crates/keygen/src/keygen.rs

@@ -2,6 +2,7 @@ use crate::{
     BLOCK_PRODUCTION,
     P2P,
 };
+use atty::Stream;
 use clap::ValueEnum;
 use fuel_core_types::{
     fuel_crypto::{
@@ -21,12 +22,15 @@ use libp2p_identity::{
 use serde_json::json;
 use std::{
     io::{
+        stdin,
+        stdout,
         Read,
         Write,
     },
     ops::Deref,
     str::FromStr,
 };
+use termion::screen::IntoAlternateScreen;
 
 /// Generate a random new secret & public key in the format expected by fuel-core
 #[derive(Debug, clap::Args)]
@@ -132,19 +136,22 @@ impl ParseSecret {
 
 fn wait_for_keypress() {
     let mut single_key = [0u8];
-    std::io::stdin().read_exact(&mut single_key).unwrap();
+    stdin().read_exact(&mut single_key).unwrap();
 }
 
 fn display_string_discreetly(
     discreet_string: &str,
     continue_message: &str,
 ) -> anyhow::Result<()> {
-    use termion::screen::IntoAlternateScreen;
-    let mut screen = std::io::stdout().into_alternate_screen()?;
-    writeln!(screen, "{discreet_string}")?;
-    screen.flush()?;
-    println!("{continue_message}");
-    wait_for_keypress();
+    if atty::is(Stream::Stdout) {
+        let mut screen = stdout().into_alternate_screen()?;
+        writeln!(screen, "{discreet_string}")?;
+        screen.flush()?;
+        println!("{continue_message}");
+        wait_for_keypress();
+    } else {
+        println!("{discreet_string}");
+    }
     Ok(())
 }