feat: improve cli (#16)

* use default_value for flags

* add checkpoint flag

Cargo.lock

@@ -1936,6 +1936,7 @@ version = "0.1.0"
 dependencies = [
  "clap",
  "client",
+ "common",
  "config",
  "dirs",
  "env_logger",

cli/Cargo.toml

@@ -13,4 +13,4 @@ log = "0.4.17"
 
 client = { path = "../client" }
 config = { path = "../config" }
-
+common = { path = "../common" }

cli/src/main.rs

@@ -1,6 +1,7 @@
 use std::{sync::Arc, time::Duration};
 
 use clap::Parser;
+use common::utils::hex_str_to_bytes;
 use dirs::home_dir;
 use env_logger::Env;
 use eyre::Result;
@@ -14,7 +15,7 @@ async fn main() -> Result<()> {
     env_logger::Builder::from_env(Env::default().default_filter_or("info")).init();
 
     let cli = Cli::parse();
-    let config = match cli.network.as_str() {
+    let mut config = match cli.network.as_str() {
         "goerli" => networks::goerli(),
         _ => {
             let home = home_dir().unwrap();
@@ -23,12 +24,16 @@ async fn main() -> Result<()> {
         }
     };
 
+    if let Some(checkpoint) = cli.checkpoint {
+        config.general.checkpoint = hex_str_to_bytes(&checkpoint)?;
+    }
+
     let mut client = Client::new(Arc::new(config)).await?;
     client.sync().await?;
 
     let client = Arc::new(Mutex::new(client));
 
-    let mut rpc = Rpc::new(client.clone(), cli.port.unwrap_or(8545));
+    let mut rpc = Rpc::new(client.clone(), cli.port);
     rpc.start().await?;
 
     loop {
@@ -39,8 +44,10 @@ async fn main() -> Result<()> {
 
 #[derive(Parser)]
 struct Cli {
-    #[clap(long)]
+    #[clap(short, long, default_value = "goerli")]
     network: String,
-    #[clap(long)]
-    port: Option<u16>,
+    #[clap(short, long, default_value = "8545")]
+    port: u16,
+    #[clap(short, long)]
+    checkpoint: Option<String>,
 }