//! Environment variable configuration.

//!

//! | Variable | Purpose |

//! |-------------------|------------------------------------|

//! | `BONK_FLAKE_PATH` | Default flake path |

//! | `BONK_BUILD_HOST` | Default build host (empty = local) |

//! | `BONK_EXTRA_ARGS` | Extra args (colon-separated) |

//! | `BONK_NO_PASSWORD` | Never prompt for elevation password |

use std::env;

use std::path::PathBuf;

/// Get flake path from environment.

pub fn get_flake_path() -> Option<PathBuf> {

env::var("BONK_FLAKE_PATH")

.ok()

.or_else(|| env::var("FLAKE").ok())

.filter(|s| !s.is_empty())

.map(PathBuf::from)

}

/// Get default build host from environment.

pub fn get_build_host() -> Option<String> {

env::var("BONK_BUILD_HOST").ok().filter(|s| !s.is_empty())

}

/// Get extra args from environment.

pub fn get_extra_args() -> Vec<String> {

env::var("BONK_EXTRA_ARGS")

.ok()

.map(|s| {

s.split(':')

.filter(|arg| !arg.is_empty())

.map(String::from)

.collect()

})

.unwrap_or_default()

}

#[cfg(test)]

mod tests {

use super::*;

use serial_test::serial;

#[test]

#[serial]

fn test_get_flake_path_none_when_unset() {

env::remove_var("BONK_FLAKE_PATH");

env::remove_var("FLAKE");

assert!(get_flake_path().is_none());

}

#[test]

#[serial]

fn test_get_extra_args_empty_when_unset() {

env::remove_var("BONK_EXTRA_ARGS");

assert!(get_extra_args().is_empty());

}

}