use std::path::PathBuf;

use config::{Config, ConfigError, File};
use lazy_static::lazy_static;
use serde::Deserialize;

lazy_static! {
    static ref XDG: xdg::BaseDirectories =
        xdg::BaseDirectories::with_prefix("chrysopoeia").unwrap();
}

#[derive(Debug, Default, Deserialize)]
pub struct Settings {
    #[serde(default = "default_parser_dir")]
    pub parser_dir: PathBuf,
}

fn default_parser_dir() -> PathBuf {
    XDG.get_data_file("parsers")
}

pub fn get_settings() -> Result<Settings, ConfigError> {
    Config::builder()
        .add_source(File::from(XDG.get_config_file("config")).required(false))
        .add_source(File::with_name("chrysopoeia").required(false))
        .build()?
        .try_deserialize::<Settings>()
}