//! Program arguments

use std::{
    os::{linux::net::SocketAddrExt, unix::net::SocketAddr},
    path::PathBuf,
};

use clap::Parser;

/// OpenID Connect server with unix backend
#[derive(Parser, Debug)]
#[command(version, about, long_about = None)]
#[command(styles = get_clap_styles())]
pub struct Args {
    /// Config file path to parse
    #[arg(short, default_value = "/etc/authy-oidc.toml")]
    pub conf: PathBuf,

    /// Pamsock abstract name to connect to
    #[cfg(feature = "pamsock")]
    #[arg(long, default_value = "pam")]
    #[arg(value_parser = parse_as_abstract_name)]
    pub pamsock_abstract_name: std::os::unix::net::SocketAddr,
}

fn parse_as_abstract_name(name: &str) -> std::io::Result<SocketAddr> {
    SocketAddr::from_abstract_name(name.as_bytes())
}

const fn get_clap_styles() -> clap::builder::Styles {
    clap::builder::Styles::styled()
        .usage(
            anstyle::Style::new()
                .bold()
                .underline()
                .fg_color(Some(anstyle::Color::Ansi256(anstyle::Ansi256Color(208)))),
        )
        .header(
            anstyle::Style::new()
                .bold()
                .underline()
                .fg_color(Some(anstyle::Color::Ansi256(anstyle::Ansi256Color(208)))),
        )
        .literal(
            anstyle::Style::new().fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Yellow))),
        )
        .invalid(
            anstyle::Style::new()
                .bold()
                .fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Red))),
        )
        .error(
            anstyle::Style::new()
                .bold()
                .fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Red))),
        )
        .valid(
            anstyle::Style::new()
                .bold()
                .underline()
                .fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Yellow))),
        )
        .placeholder(
            anstyle::Style::new().fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Blue))),
        )
}