use std::path::PathBuf;
use clap::{CommandFactory, FromArgMatches, Parser};
use concat_with::concat_line;
use terminal_size::terminal_size;
const APP_NAME: &str = "tw2s";
const CARGO_PKG_VERSION: &str = env!("CARGO_PKG_VERSION");
const CARGO_PKG_AUTHORS: &str = env!("CARGO_PKG_AUTHORS");
const AFTER_HELP: &str = "Enjoy it! https://magiclen.org";
const APP_ABOUT: &str = concat!(
"A simple tool for converting Traditional Chinese(TW) to Simple Chinese.\n\nEXAMPLES:\n",
concat_line!(prefix "tw2s ",
" # Convert each of input lines from Traditional Chinese to Simple Chinese",
"cht.txt chs.txt # Convert cht.txt (in Traditional Chinese) to chs.txt (in Simple Chinese)",
"a.cht.txt # Convert a.cht.txt (in Traditional Chinese) to a.chs.txt (in Simple Chinese)"
)
);
#[derive(Debug, Parser)]
#[command(name = APP_NAME)]
#[command(term_width = terminal_size().map(|(width, _)| width.0 as usize).unwrap_or(0))]
#[command(version = CARGO_PKG_VERSION)]
#[command(author = CARGO_PKG_AUTHORS)]
#[command(after_help = AFTER_HELP)]
pub struct CLIArgs {
#[arg(short, long)]
#[arg(help = "Force to output if the output file exists")]
pub force: bool,
#[arg(value_hint = clap::ValueHint::FilePath)]
#[arg(help = "Assign the path of your Traditional Chinese document. It should be a file path")]
pub tw_path: Option<PathBuf>,
#[arg(value_hint = clap::ValueHint::FilePath)]
#[arg(help = "Assign the path of your Simple Chinese document. It should be a file path")]
pub s_path: Option<PathBuf>,
}
pub fn get_args() -> CLIArgs {
let args = CLIArgs::command();
let about = format!("{APP_NAME} {CARGO_PKG_VERSION}\n{CARGO_PKG_AUTHORS}\n{APP_ABOUT}");
let args = args.about(about);
let matches = args.get_matches();
match CLIArgs::from_arg_matches(&matches) {
Ok(args) => args,
Err(err) => {
err.exit();
},
}
}