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pub type AdapterResult<T> = Result<T, Box<dyn std::error::Error>>;

#[cfg(feature = "fmt-env")]
mod aenv;
#[cfg(feature = "fmt-json")]
mod ajson;
#[cfg(feature = "fmt-javaproperties")]
mod aprop;
#[cfg(feature = "fmt-toml")]
mod atoml;
#[cfg(feature = "fmt-yaml")]
mod ayaml;

#[cfg(feature = "fmt-env")]
pub use aenv::*;
#[cfg(feature = "fmt-json")]
pub use ajson::*;
#[cfg(feature = "fmt-javaproperties")]
pub use aprop::*;
#[cfg(feature = "fmt-toml")]
pub use atoml::*;
#[cfg(feature = "fmt-yaml")]
pub use ayaml::*;

/// ConfigAdapter mediates from varius config format and Viperus
pub trait ConfigAdapter {
    /// parse create he interna rappresentation of the config file/mode
    fn parse(&mut self) -> AdapterResult<()>;
    /// get_map returns a key value map rappresentation of the actaul config
    fn get_map(&self) -> crate::map::Map;
}

#[cfg(test)]
mod tests {
    use super::*;

    fn init() {
        let _ = env_logger::builder().is_test(true).try_init();
    }

    #[test]
    #[cfg(feature = "fmt-json")]
    fn adapter_json_load() {
        init();

        let mut a = JsonAdapter::new();
        a.load(&mut "{ \"json\": true }".as_bytes()).unwrap();
        a.parse().unwrap();

        let map = a.get_map();
        let jtrue = map.get::<bool>("json").unwrap();
        assert_eq!(jtrue, true);
    }

    #[test]
    #[cfg(feature = "fmt-yaml")]
    fn adapter_yaml_load() {
        init();

        let mut a = YamlAdapter::new();
        a.load(&mut "yaml: true\n".as_bytes()).unwrap();
        a.parse().unwrap();

        let map = a.get_map();
        let jtrue = map.get::<bool>("yaml").unwrap();
        assert_eq!(jtrue, true);
    }

    #[test]
    #[cfg(feature = "fmt-toml")]
    fn adapter_toml_load() {
        init();

        let mut a = TomlAdapter::new();
        a.load(&mut "[level1]\nkey1=true\nkeyi32=42\nkey=\"hello world!\"\n".as_bytes())
            .unwrap();
        a.parse().unwrap();

        let map = a.get_map();
        let jtrue = map.get::<bool>("level1.key1").unwrap();
        assert_eq!(jtrue, true);

        let ji32 = map.get::<i32>("level1.keyi32").unwrap();
        assert_eq!(ji32, 42);

        let jstr = map.get::<String>("level1.key").unwrap();
        assert_eq!(jstr, "hello world!");
    }
}