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/// Get a language as an embedded resource
///
/// # Arguments
/// * `filename` - Path to the file to embed
#[macro_export]
macro_rules! embedded_language {
    ($filename:literal, resources = [ $($rname:literal: $rfilename:expr),+ ]) => {
        embedded_lang::Language::new_from_string(include_str!($filename), std::collections::HashMap::from([$(($rname.to_string(), include_bytes!($rfilename).to_vec())),+])).unwrap()

    };
    ($filename:literal) => {
        embedded_lang::Language::new_from_string(include_str!($filename), std::collections::HashMap::from([])).unwrap()

    };
}

/// Get a language string
///
/// # Arguments
/// * `filename` - Path to the file to embed
#[macro_export]
macro_rules! get_string {
    ($set:expr, $name:expr) => {
        $set.get($name).unwrap_or_default()
    };
}

#[cfg(test)]
mod test_token {
    use crate as embedded_lang;
    use crate::LanguageSet;

    #[test]
    fn test_embedded_language() {
        let lang = embedded_language!("../examples/en.lang.json");
        assert_eq!(lang.get("hello_msg"), Some("hello world!"));
    }

    #[test]
    fn test_embedded_resources() {
        let lang = embedded_language!("../examples/en.lang.json", resources = [
            "license_file":"../LICENSE"
        ]);
        assert_eq!(lang.get("hello_msg"), Some("hello world!"));
    }

    #[test]
    fn test_get_string() {
        let mut set = LanguageSet::new(
            "fr",
            &[
                embedded_language!("../examples/en.lang.json"),
                embedded_language!("../examples/fr.lang.json"),
            ],
        );
        set.set_fallback_language("en");

        assert_eq!(
            get_string!(
                LanguageSet::new(
                    "fr",
                    &[
                        embedded_language!("../examples/en.lang.json"),
                        embedded_language!("../examples/fr.lang.json"),
                    ]
                ),
                "foobar"
            ),
            ""
        );
        assert_eq!(get_string!(set, "foobar"), "");
        assert_eq!(get_string!(set, "mustard"), "mustard");
    }
}