use clap::Parser;
use std::{
	ffi::OsStr,
	path::{Path, PathBuf},
};

#[derive(Clone, Debug)]
pub struct ConfigPath(pub PathBuf);

impl Default for ConfigPath {
	fn default() -> ConfigPath {
		ConfigPath(
			directories::ProjectDirs::from("tk", "txmn", "gmarche").map_or_else(
				|| Path::new(".config").to_path_buf(),
				|o| o.config_dir().into(),
			),
		)
	}
}

impl From<&OsStr> for ConfigPath {
	fn from(v: &OsStr) -> ConfigPath {
		ConfigPath(PathBuf::from(v))
	}
}

impl ToString for ConfigPath {
	fn to_string(&self) -> String {
		String::from(
			self.0
				.as_path()
				.to_str()
				.expect("Error: Config dir is not UTF-8!"),
		)
	}
}

#[derive(Clone, Debug, Parser)]
#[clap(name = "gmarche")]
pub struct MainOpt {
	/// Directory
	#[clap(short, long, parse(from_os_str), default_value_t=ConfigPath::default())]
	pub dir: ConfigPath,

	/// Subcommand
	#[clap(subcommand)]
	pub cmd: MainSubcommand,
}

#[derive(Clone, Debug, Parser)]
pub enum MainSubcommand {
	/// Initialize config & db
	Init,

	/// Start server
	Start,
}