feat(cli): add completions command to jstz

crates/jstz_cli/Cargo.toml

@@ -52,6 +52,7 @@ crossterm = "0.27"
 ansi_term = "0.12.1"
 console = "0.15.8"
 futures = "0.3"
+clap_complete = "4.4.10"
 
 [[bin]]
 name = "jstz"

crates/jstz_cli/src/completions.rs

@@ -0,0 +1,12 @@
+use std::io;
+
+use clap::CommandFactory;
+use clap_complete::Shell;
+
+use crate::{error::Result, Command};
+
+pub fn exec(shell: Shell) -> Result<()> {
+    let cmd = &mut Command::command();
+    clap_complete::generate(shell, cmd, "jstz", &mut io::stdout());
+    Ok(())
+}

crates/jstz_cli/src/main.rs

@@ -2,6 +2,7 @@ use clap::Parser;
 
 mod account;
 mod bridge;
+mod completions;
 mod config;
 mod deploy;
 mod error;
@@ -14,14 +15,15 @@ mod sandbox;
 mod term;
 mod utils;
 
+use clap_complete::Shell;
 use config::Config;
 use error::Result;
 use run::DEFAULT_GAS_LIMIT;
 use utils::AddressOrAlias;
 
 #[derive(Parser)]
 #[command(author, version)]
-enum Command {
+pub enum Command {
     /// Commands related to the jstz sandbox.
     #[command(subcommand)]
     Sandbox(sandbox::Command),
@@ -31,6 +33,12 @@ enum Command {
     /// Commands related to the account management
     #[command(subcommand)]
     Account(account::Command),
+    /// Generates shell completions
+    Completions {
+        /// The shell to generate completions for
+        #[arg(long, short)]
+        shell: Shell,
+    },
     /// Deploys a smart function
     Deploy {
         /// Function code.
@@ -85,6 +93,7 @@ enum Command {
 
 async fn exec(command: Command) -> Result<()> {
     match command {
+        Command::Completions { shell } => completions::exec(shell),
         Command::Sandbox(sandbox_command) => sandbox::exec(sandbox_command).await,
         Command::Bridge(bridge_command) => bridge::exec(bridge_command),
         Command::Account(account_command) => account::exec(account_command).await,