jade/src/main.rs

use clap::{App, Arg, SubCommand}; 

fn main() {
    let app = App::new("jade")
        .version(env!("CARGO_PKG_VERSION"))
        .about(env!("CARGO_PKG_DESCRIPTION"))
        .subcommand(
            SubCommand::with_name("set")
                .about("Sets a value for installation")
                .subcommand(
                    SubCommand::with_name("partition")
                        .about("Partition the install destination")
                        .arg(
                            Arg::with_name("mode")
                                .help("If jade should automatically partition (mode = auto) or the user manually partitioned it (mode = manual)")
                                .required(true),
                        )
                        .arg(
                            Arg::with_name("root")
                                .help("The root partition to use (only read if mode is manual)")
                                .required_if("mode", "manual"),
                        )
                        .arg(
                            Arg::with_name("boot")
                                .help("The boot partition to use (only read if mode is manual)")
                                .required_if("mode", "manual"),
                        )
                        .arg(
                            Arg::with_name("swap")
                                .help("The swap partition to use (only read if mode is manual)")
                                .required_if("mode", "manual"),
                        ),
                )
                .subcommand(
                    SubCommand::with_name("timezone")
                        .about("Set the timezone")
                        .arg(
                            Arg::with_name("timezone")
                                .help("The timezone to set")
                                .required(true),
                        ),
                )
                .subcommand(
                    SubCommand::with_name("locales")
                        .about("Set the locales")
                        .arg(
                            Arg::with_name("locales")
                                .help("The locales to set")
                                .multiple(true)
                                .index(1)
                                .required(true),
                        ),
                )
                .subcommand(
                    SubCommand::with_name("hostname")
                        .about("Set the hostname")
                        .arg(
                            Arg::with_name("hostname")
                                .help("The hostname to set")
                                .required(true),
                        ),
                )
                .subcommand(
                    SubCommand::with_name("ipv6")
                        .about("Activate IPv6")
                        .arg(
                            Arg::with_name("ipv6")
                                .help("If ipv6 should be activated")
                                .required(true),
                        ),   
                )
                .subcommand(
                    SubCommand::with_name("rootPass")
                        .about("Set the root password")
                        .arg(
                            Arg::with_name("rootPass")
                                .help("The root password to set")
                                .required(true),
                        ),
                )
                .subcommand(
                    SubCommand::with_name("newUser")
                        .about("Create a new user")
                        .arg(
                            Arg::with_name("username")
                                .help("The username to create")
                                .required(true),
                        )
                        .arg(
                            Arg::with_name("password")
                                .help("The password to set")
                                .required(true),
                        )
                )
                .subcommand(
                    SubCommand::with_name("graphical")
                        .about("Graphical stuff (Desktop environment and Display Manager)")
                        .arg(
                            Arg::with_name("de")
                                .help("The Desktop envionment to install")
                                .required(true),
                        )
                        .arg(
                            Arg::with_name("dm")
                                .help("The Display Manager to install")
                                .required(true),
                        ),
                )
                .subcommand(
                    SubCommand::with_name("flatpak")
                        .about("Flatpak")
                        .arg(
                            Arg::with_name("flatpak")
                                .help("If flatpak should be installed")
                                .required(true),
                        ),
                )
    ).get_matches();    

    if let Some(app) = app.subcommand_matches("set") {
        if let Some(app) = app.subcommand_matches("partition") {
            let mode = app.value_of("mode").unwrap();
            let root = app.value_of("root").unwrap_or("none");
            let boot = app.value_of("boot").unwrap_or("none");
            let swap = app.value_of("swap").unwrap_or("none");
            println!("mode: {}", mode);
            println!("root: {}", root);
            println!("boot: {}", boot);
            println!("swap: {}", swap);
        } else if let Some(app) = app.subcommand_matches("timezone") {
            let timezone = app.value_of("timezone").unwrap();
            println!("{}", timezone);
        } else if let Some(app) = app.subcommand_matches("locales") {
            let locales = app.values_of("locales").unwrap();
            println!("{:?}", locales);
        } else if let Some(app) = app.subcommand_matches("hostname") {
            let hostname = app.value_of("hostname").unwrap();
            println!("{}", hostname);
        } else if let Some(app) = app.subcommand_matches("ipv6") {
            let ipv6 = app.value_of("ipv6").unwrap();
            println!("{}", ipv6);
        } else if let Some(app) = app.subcommand_matches("rootPass") {
            let root_pass = app.value_of("rootPass").unwrap();
            println!("{}", root_pass);
        } else if let Some(app) = app.subcommand_matches("newUser") {
            let username = app.value_of("username").unwrap();
            let password = app.value_of("password").unwrap();
            println!("{}", username);
            println!("{}", password);
        } else if let Some(app) = app.subcommand_matches("graphical") {
            let de = app.value_of("de").unwrap();
            let dm = app.value_of("dm").unwrap();
            println!("{}", de);
            println!("{}", dm);
        } else if let Some(app) = app.subcommand_matches("flatpak") {
            let flatpak = app.value_of("flatpak").unwrap();
            println!("{}", flatpak);
        }
    } else {
        println!("Running TUI installer");
    }
}