[Radicle CI broker]: https://app.radicle.xyz/nodes/radicle.liw.fi/rad:zwTxygwuz5LDGBq255RA2CbNGrz8

This crate also includes the program `rad-ci`, which runs the commands

the adapter runs when invoked by the CI broker. To use: install it on

your `$PATH` (using `cargo install`) and run:

```sh

rad ci

```

This will read `.radicle/native.yaml` and run the shell commands

specified there.

(No command line arguments or options needed, nor any environment

variables for this.)

use std::{

    path::Path,

    process::{exit, Command},

};

use radicle_native_ci::{run::RUNSPEC_PATH, runspec::RunSpec};

// Exit codes for the program.

const EXIT_OK: i32 = 0;

const EXIT_FAILURE: i32 = 1;

const EXIT_ERROR: i32 = 2;

/// The main program.

fn main() {

    let code = match fallible_main() {

        Ok(success) => {

            if success {

                EXIT_OK

            } else {

                EXIT_FAILURE

            }

        }

        Err(e) => {

            eprintln!("ERROR: {}", e);

            let mut e = e.source();

            while let Some(source) = e {

                eprintln!("caused by: {}", source);

                e = source.source();

            }

            EXIT_ERROR

        }

    };

    exit(code);

}

fn fallible_main() -> Result<bool, Box<dyn std::error::Error>> {

    let runspec = RunSpec::from_file(Path::new(RUNSPEC_PATH))?;

    let shell = format!("set -xeuo pipefail\n{}", runspec.shell);

    let exit = Command::new("bash").args(["-c", &shell]).spawn()?.wait()?;

    Ok(exit.success())

}