use clap::App;

mod cmd;
mod cmd_download;
mod cmd_default;
mod har;

use cmd::{ Command, CommandError, };
use cmd_download::CommandDownload;
use cmd_default::CommandDefault;

fn main() -> CommandError {
    let commands: Vec<Box<dyn Command>> = vec![
        Box::new(CommandDownload{}),
    ];
    let mut app = App::new(env!("CARGO_PKG_NAME"))
                    .version(env!("CARGO_PKG_VERSION"))
                    .about(env!("CARGO_PKG_DESCRIPTION"));
    app = CommandDefault::process_command(app);
    for command in &commands {
        app = app.subcommand(command.subcommand());
    }

    let matches = app.get_matches();
    for command in &commands {
        if let Some(sub_cmd_matches) = matches.subcommand_matches(command.name()) {
            return command.run(&matches, sub_cmd_matches);
        }
    }

    CommandDefault::run(&matches)
}