use std::borrow::Cow;
use crate::launcher::Launch;
use crate::launcher::strsub::SubFunc;

impl<'k, 'rep, 'l: 'rep> SubFunc<'k, 'rep> for &'rep Launch<'l> {
    fn substitute(self, key: &'k str) -> Option<Cow<'rep, str>> {
        match key {
            "assets_index_name" => self.asset_index_name.as_ref().map(|s| Cow::Borrowed(s.as_str())),
            "assets_root" => Some(self.launcher.assets.get_home().to_string_lossy()),
            "auth_access_token" => Some(Cow::Borrowed("-")), // TODO
            "auth_player_name" => Some(Cow::Borrowed("Player")), // TODO
            "auth_session" => Some(Cow::Borrowed("-")), // TODO
            "auth_uuid" => Some(Cow::Borrowed("00000000-0000-0000-0000-000000000000")), // TODO
            "auth_xuid" => Some(Cow::Borrowed("00000000-0000-0000-0000-000000000000")), // TODO
            "classpath" => Some(Cow::Borrowed(self.classpath.as_str())), // TODO
            "classpath_separator" => None, // FIXME
            "game_assets" => self.virtual_assets_path.as_ref().map(|s| s.to_string_lossy()),
            "game_directory" => Some(self.instance_home.to_string_lossy()),
            "language" => Some(Cow::Borrowed("en-us")), // ???
            "launcher_name" => Some(Cow::Borrowed("ozone (olauncher 3)")), // TODO
            "launcher_version" => Some(Cow::Borrowed("yeah")), // TODO
            "library_directory" => Some(self.launcher.libraries.home.to_string_lossy()),
            "natives_directory" => Some(self.natives_path.to_string_lossy()),
            "primary_jar" => self.client_jar.as_ref().map(|p| p.to_string_lossy()),
            "quickPlayMultiplayer" => None, // TODO
            "quickPlayPath" => None, // TODO
            "quickPlayRealms" => None, // TODO
            "quickPlaySingleplayer" => None, // TODO
            "resolution_height" => None, // TODO
            "resolution_width" => None, // TODO
            "user_properties" => Some(Cow::Borrowed("{}")), // TODO
            "user_property_map" => Some(Cow::Borrowed("[]")), // TODO
            "user_type" => Some(Cow::Borrowed("legacy")), // TODO
            "version_name" => Some(Cow::Borrowed(&self.version_id.as_ref())),
            "version_type" => self.version_type.as_ref().map(|s| Cow::Borrowed(s.to_str())),
            _ => {
                if let Some(asset_key) = key.strip_prefix("asset=") {
                    return self.asset_index.as_ref()
                        .map_or(None, |idx| idx.objects.get(asset_key))
                        .map(|obj| Cow::Owned(self.launcher.assets.get_object_path(obj).to_string_lossy().into_owned()))
                }

                None
            }
        }
    }
}