Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

vendor/dialoguer/examples/wizard.rs

@@ -0,0 +1,81 @@
+use std::error::Error;
+use std::net::IpAddr;
+
+use console::Style;
+use dialoguer::{theme::ColorfulTheme, Confirm, Input, Select};
+
+#[derive(Debug)]
+#[allow(dead_code)]
+struct Config {
+    interface: IpAddr,
+    hostname: String,
+    use_acme: bool,
+    private_key: Option<String>,
+    cert: Option<String>,
+}
+
+fn init_config() -> Result<Option<Config>, Box<dyn Error>> {
+    let theme = ColorfulTheme {
+        values_style: Style::new().yellow().dim(),
+        ..ColorfulTheme::default()
+    };
+    println!("Welcome to the setup wizard");
+
+    if !Confirm::with_theme(&theme)
+        .with_prompt("Do you want to continue?")
+        .interact()?
+    {
+        return Ok(None);
+    }
+
+    let interface = Input::with_theme(&theme)
+        .with_prompt("Interface")
+        .default("127.0.0.1".parse().unwrap())
+        .interact()?;
+
+    let hostname = Input::with_theme(&theme)
+        .with_prompt("Hostname")
+        .interact()?;
+
+    let tls = Select::with_theme(&theme)
+        .with_prompt("Configure TLS")
+        .default(0)
+        .item("automatic with ACME")
+        .item("manual")
+        .item("no")
+        .interact()?;
+
+    let (private_key, cert, use_acme) = match tls {
+        0 => (Some("acme.pkey".into()), Some("acme.cert".into()), true),
+        1 => (
+            Some(
+                Input::with_theme(&theme)
+                    .with_prompt("  Path to private key")
+                    .interact()?,
+            ),
+            Some(
+                Input::with_theme(&theme)
+                    .with_prompt("  Path to certificate")
+                    .interact()?,
+            ),
+            false,
+        ),
+        _ => (None, None, false),
+    };
+
+    Ok(Some(Config {
+        hostname,
+        interface,
+        private_key,
+        cert,
+        use_acme,
+    }))
+}
+
+fn main() {
+    match init_config() {
+        Ok(None) => println!("Aborted."),
+        Ok(Some(config)) => println!("{:#?}", config),
+        Err(err) => println!("error: {}", err),
+    }
+}