mod burning;
mod consumers;
mod data_sessions;
mod media;
mod power;
mod profiles;
mod programs;
mod recovery;
mod server;
mod software;
use clap::Parser;
use fds_common::{Error, Result, topology};
use std::{path::PathBuf, process::ExitCode};

#[derive(Parser)]
#[command(
    version = env!("FDS_BUILD_VERSION"),
    about = "Run the root cartridge service or inspect USB topology"
)]
struct Cli {
    /// Notify s6 when the service is ready.
    #[arg(long, conflicts_with = "topology")]
    notify: bool,
    /// Inspect topology without starting the service or mounting devices.
    #[arg(long, value_name = "SYSFS_ROOT")]
    topology: Option<PathBuf>,
}
fn run() -> Result<()> {
    let cli = Cli::parse();
    if let Some(sys) = cli.topology {
        println!(
            "{}",
            serde_json::to_string_pretty(&topology::devices(&sys)?)
                .map_err(|e| Error(e.to_string()))?
        );
        Ok(())
    } else {
        server::run(cli.notify)
    }
}
fn main() -> ExitCode {
    match run() {
        Ok(()) => ExitCode::SUCCESS,
        Err(e) => {
            eprintln!("fds-cartridged: {e}");
            ExitCode::FAILURE
        }
    }
}

#[cfg(test)]
mod cli_tests {
    use super::*;
    use clap::{CommandFactory, Parser};
    #[test]
    fn typed_command_contract() {
        Cli::command().debug_assert();
        assert!(!Cli::try_parse_from(["fds-cartridged"]).unwrap().notify);
        assert!(
            Cli::try_parse_from(["fds-cartridged", "--notify"])
                .unwrap()
                .notify
        );
        assert!(Cli::try_parse_from(["fds-cartridged", "--topology", "/sys"]).is_ok());
        assert!(Cli::try_parse_from(["fds-cartridged", "--notify", "--topology", "/sys"]).is_err());
    }
}