Add gpgui-helper (#326)

apps/gpgui-helper/src-tauri/src/cli.rs

@@ -0,0 +1,56 @@
+use clap::Parser;
+use gpapi::utils::base64;
+use log::{info, LevelFilter};
+
+use crate::app::App;
+
+const VERSION: &str = concat!(env!("CARGO_PKG_VERSION"), " (", compile_time::date_str!(), ")");
+const GP_API_KEY: &[u8; 32] = &[0; 32];
+
+#[derive(Parser)]
+#[command(version = VERSION)]
+struct Cli {
+  #[arg(long, help = "Read the API key from stdin")]
+  api_key_on_stdin: bool,
+
+  #[arg(long, default_value = env!("CARGO_PKG_VERSION"), help = "The version of the GUI")]
+  gui_version: String,
+}
+
+impl Cli {
+  fn run(&self) -> anyhow::Result<()> {
+    let api_key = self.read_api_key()?;
+    let app = App::new(api_key, &self.gui_version);
+
+    app.run()
+  }
+
+  fn read_api_key(&self) -> anyhow::Result<Vec<u8>> {
+    if self.api_key_on_stdin {
+      let mut api_key = String::new();
+      std::io::stdin().read_line(&mut api_key)?;
+
+      let api_key = base64::decode_to_vec(api_key.trim())?;
+
+      Ok(api_key)
+    } else {
+      Ok(GP_API_KEY.to_vec())
+    }
+  }
+}
+
+fn init_logger() {
+  env_logger::builder().filter_level(LevelFilter::Info).init();
+}
+
+pub fn run() {
+  let cli = Cli::parse();
+
+  init_logger();
+  info!("gpgui-helper started: {}", VERSION);
+
+  if let Err(e) = cli.run() {
+    eprintln!("{}", e);
+    std::process::exit(1);
+  }
+}