use std::io::Result;
use super::available_commands;
use crate::configuration::Configuration;

pub struct Help;

impl Help {
    pub fn new() -> Self {
        Help
    }
}

impl super::Command for Help {
    fn before_dependencies(&self) -> Vec<Box<dyn super::Command>> {
        vec![]
    }

    fn execute(&self, _: Option<&String>, _: &Configuration, _: &String) -> Result<()> {
        let commands = available_commands();
        println!("Usage:");
        println!("");
        for command in commands {
            print!("blog {} ", command.command());
            println!("{}", command.help());
        }
        return Ok(())
    }

    fn after_dependencies(&self) -> Vec<Box<dyn super::Command>> {
        vec![]
    }

    fn command(&self) -> &'static str {
        "help"
    }

    fn help(&self) -> &'static str {
        "\t\t\t\tPrints this help"
    }
}