Improvements for keygen cli and crates

Import improvements from FuelLabs/sway#5153.

Once this PR is merged and a new release is created sway will reference
this crate instead of having its own copy.

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 Description of the upcoming release here.
 
 ### Added
+- [#1465](https://github.com/FuelLabs/fuel-core/pull/1465): Improvements for keygen cli and crates
 - [#1457](https://github.com/FuelLabs/fuel-core/pull/1457): Fixing incorrect measurement for fast(µs) opcodes.
 - [#1456](https://github.com/FuelLabs/fuel-core/pull/1456): Added flushing of the RocksDB during a graceful shutdown.
 - [#1456](https://github.com/FuelLabs/fuel-core/pull/1456): Added more logs to track the service lifecycle.

bin/keygen/Cargo.toml

@@ -11,5 +11,8 @@ description = "Command line utilities for fuel-core key management"
 
 [dependencies]
 anyhow = { workspace = true }
+atty = "0.2.14"
 clap = { workspace = true, features = ["derive", "env"] }
 fuel-core-keygen = { workspace = true }
+serde_json = { workspace = true, features = ["raw_value"] }
+termion = "2.0.1"

bin/keygen/src/main.rs

@@ -1,25 +1,114 @@
 //! A simple keygen cli utility tool for configuring fuel-core
-
+use atty::Stream;
 use clap::Parser;
-use fuel_core_keygen::keygen;
+use fuel_core_keygen::{
+    new_key,
+    parse_secret,
+    KeyType,
+};
+use std::io::{
+    stdin,
+    stdout,
+    Read,
+    Write,
+};
+use termion::screen::IntoAlternateScreen;
+
+/// Parse a secret key to view the associated public key
+#[derive(Debug, clap::Args)]
+#[clap(author, version, about)]
+pub struct ParseSecret {
+    /// A private key in hex format
+    secret: String,
+    /// Print the JSON in pretty format
+    #[clap(long = "pretty", short = 'p')]
+    pub pretty: bool,
+    /// Key type to generate. It can either be `block-production` or `peering`.
+    #[clap(
+        long = "key-type",
+        short = 'k',
+        value_enum,
+        default_value = <KeyType as std::convert::Into<&'static str>>::into(KeyType::BlockProduction),
+    )]
+    pub key_type: KeyType,
+}
+
+/// Generate a random new secret & public key in the format expected by fuel-core
+#[derive(Debug, clap::Args)]
+#[clap(author, version, about)]
+pub struct NewKey {
+    /// Print the JSON in pretty format
+    #[clap(long = "pretty", short = 'p')]
+    pub pretty: bool,
+    /// Key type to generate. It can either be `block-production` or `peering`.
+    #[clap(
+        long = "key-type",
+        short = 'k',
+        value_enum,
+        default_value = <KeyType as std::convert::Into<&'static str>>::into(KeyType::BlockProduction),
+    )]
+    pub key_type: KeyType,
+}
 
 /// Key management utilities for configuring fuel-core
 #[derive(Debug, Parser)]
 pub(crate) enum Command {
-    New(keygen::NewKey),
-    Parse(keygen::ParseSecret),
+    New(NewKey),
+    Parse(ParseSecret),
 }
 
 impl Command {
-    pub(crate) fn exec(&self) -> anyhow::Result<()> {
+    pub(crate) fn exec(&self) -> anyhow::Result<(serde_json::Value, bool)> {
         match self {
-            Command::New(cmd) => cmd.exec(),
-            Command::Parse(cmd) => cmd.exec(),
+            Command::New(cmd) => {
+                Ok((serde_json::to_value(new_key(cmd.key_type)?)?, cmd.pretty))
+            }
+            Command::Parse(cmd) => Ok((
+                serde_json::to_value(parse_secret(cmd.key_type, &cmd.secret)?)?,
+                cmd.pretty,
+            )),
         }
     }
 }
 
 fn main() -> anyhow::Result<()> {
     let cmd = Command::parse();
-    cmd.exec()
+    let (result, is_pretty) = cmd.exec()?;
+    print_value(result, is_pretty)
+}
+
+fn wait_for_keypress() {
+    let mut single_key = [0u8];
+    stdin().read_exact(&mut single_key).unwrap();
+}
+
+fn display_string_discreetly(
+    discreet_string: &str,
+    continue_message: &str,
+) -> anyhow::Result<()> {
+    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(())
+}
+
+fn print_value(output: serde_json::Value, pretty: bool) -> anyhow::Result<()> {
+    let output = if pretty {
+        serde_json::to_string_pretty(&output)
+    } else {
+        serde_json::to_string(&output)
+    }
+    .map_err(anyhow::Error::msg);
+
+    let _ = display_string_discreetly(
+        &output?,
+        "### Do not share or lose this private key! Press any key to complete. ###",
+    );
+    Ok(())
 }

crates/keygen/Cargo.toml

@@ -12,9 +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"] }
-serde_json = { workspace = true, features = ["raw_value"] }
-termion = "2.0.1"
+serde = { workspace = true, features = ["derive"] }