use pico_args::Arguments;

mod command;
mod env;
mod error;
mod flag;
mod help;
mod state;
mod util;

use help::{ help, version };
use state::State;

static VERSION: &str = env!("CARGO_PKG_VERSION");

fn main() {
	//	collect args
	let mut args = Arguments::from_env();

	//	consume flags
	if args.contains(flag::HELP) {
		help(&mut args);
		return;
	}

	if args.contains(flag::VERSION) {
		version();
		return;
	}

	let mut state = State::new(&mut args);

	let target = state.target();

	//	invoke subcommand function
	match target.as_deref() {
		Some("help")
			=>	help(&mut args),
		None
			=>	command::share::context_action(&state),

		Some("a" | "attach")
			=>	command::share::attach(&mut state),

		Some("d" | "detach")
			=>	command::share::detach(&mut state),

		Some("h" | "has")
			=>	command::share::has(&mut state),

		Some("l" | "ls" | "list")
			=>	command::share::list(&state),

		Some("n" | "new")
			=>	command::share::new(&mut state),

		Some("p" | "path")
			=>	command::session::path(&mut state),

		Some("s" | "switch")
			=>	command::session::switch(&mut state),

		Some("w" | "which" | "title")
			=>	command::session::which(state),

		_
			=>	error::no_subcommand(target.unwrap())
	}

}