use std::convert::TryFrom;
use std::io::Write;

use clap::ArgMatches;

use crate::error::Result;
use crate::database::Database;
use crate::config::Config;

pub mod r#in;
pub mod display;
pub mod today;
pub mod yesterday;
pub mod sheet;
pub mod week;
pub mod month;

pub trait Command<'a> {
    type Args: TryFrom<&'a ArgMatches<'a>>;

    fn handle<D: Database, O: Write, E: Write>(args: Self::Args, db: &mut D, out: &mut O, err: &mut E, config: &Config) -> Result<()>;
}