Implement Basic CLI skeleton

Parse generic commands and subcommands (args) using clap; Write Basic
Commands enum docs to show after
--help flag.

1 files changed, 33 insertions, 30 deletions

diff --git a/vegilctl/src/main.rs b/vegilctl/src/main.rs
index cbfc2f2..08ff37c 100644
--- a/vegilctl/src/main.rs
+++ b/vegilctl/src/main.rs
@@ -1,37 +1,40 @@
-#[derive(Debug)]
+use clap::{Parser, Subcommand};
+
+#[derive(Subcommand, Clone,Debug)]
 enum Command {
-    Status,
-    Stop,
-    Start,
-    Enable,
-    Disable,
+    /// Check Service Status
+    Status { of: String },
+    /// Stop Specified Service
+    Stop { service: String },
+    /// Start Specified Service
+    Start { service: String },
+    /// Start Service after system initialization (Add Service symlink to Vigil service startup
+    /// list)
+    Enable { service: String },
+    /// Remove Service From Service initialization list
+    Disable { service: String },
+    /// Power Management Commands
+    #[command(subcommand)]
+    Power(PowerCommand)
+}
+#[derive(Subcommand, Clone, Debug)]
+enum PowerCommand {
+    /// Reboot System
+    Reboot,
+    /// Poweroff System
+    Poweroff,
+    /// Halt
+    Halt
 }
-struct CliArgs {
+#[derive(Parser)]
+#[command(name = "vigilctl")]
+#[command(about = "Vigil control manager")]
+struct Cli {
+    #[command(subcommand)]
     command: Command,
-    target: String
 }
 fn main() {
-    let command:Command = match std::env::args().nth(1).as_deref(){
-         Some("status") => Command::Status,
-         Some("start") => Command::Start,
-         Some("stop") => Command::Stop,
-         Some("enable") => Command::Enable,
-         Some("disable") => Command::Disable,
-         Some(cmd) => {
-             eprintln!("invalid command arg:{}", cmd);
-             std::process::exit(1);
-         }
-         None => {
-             eprintln!("Invalid input: No command arg specified\nRun with --help to get help");
-             std::process::exit(1);
-         }
-    };
-    let target = std::env::args().nth(2).expect("no target arg specified");
-
-    let args = CliArgs {
-        command,
-        target
-    };
+    let args = Cli::parse();
 
-    println!("command: {:?}, target: {:?}", args.command, args.target);
+    println!("command: {:?}", args.command);
 }