use askalono::Store;

use once_cell::sync::Lazy;

use spdx::{Expression, ParseMode};

use tracing::debug;

use crate::utils::ResultExt;

pub static LICENSE_STORE: Lazy<Option<Store>> = Lazy::new(|| {

Store::from_cache(include_bytes!("../data/license-store-cache.zstd") as &[_]).ok_warn()

});

include!("../data/get_nix_license.rs");

pub fn parse_spdx_expression(license: &str, source: &'static str) -> Vec<&'static str> {

Expression::parse_mode(license, ParseMode::LAX)

.ok_warn()

.map_or_else(Vec::new, |expr| {

expr.requirements()

.filter_map(|req| {

let license = get_nix_license(req.req.license.id()?.name)?;

debug!("license from {source}: {license}");

Some(license)

})

.collect()

})

}

#[cfg(test)]

mod tests {

use super::parse_spdx_expression;

#[test]

fn basic() {

assert_eq!(parse_spdx_expression("MPL-2.0", ""), ["mpl20"]);

assert_eq!(parse_spdx_expression("GPL-3.0", ""), ["gpl3Only"]);

assert_eq!(parse_spdx_expression("unknown license", ""), [""; 0]);

assert_eq!(

parse_spdx_expression("MIT or Apache-2.0", ""),

["mit", "asl20"],

);

}

}