deepr-s3 0.1.0

deepr SDK for S3 operations
Documentation 
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// use crate::s3;
use clap::{ArgAction, Command, arg, command};
pub struct Cli {}

impl Cli {
    fn cmd() -> Command {
        command!()
            .version("0.1.0")
            .about("DeepR S3 Operations CLI")
            .author("Ngakan Gandhi <ngandhi@pmintl.net")
            .bin_name("deepr")
            .subcommand(
                Command::new("bucket").about("S3 bucket API")
                .subcommand(
                    Command::new("list")
                        .arg(arg!(-p --pretty "Pretty print output").action(ArgAction::SetTrue))
                        .arg_required_else_help(true),
                )
                .subcommand(Command::new("policies").about("S3 bucket policies getter API"))
            )
            .subcommand(
                Command::new("objects").about("S3 objects API").subcommand(
                    Command::new("list")
                        .arg(arg!(-b --bucket <VALUE> "input S3 bucket").required(true))
                        .arg(arg!(-r --prefix <VALUE> "Key prefix").required(true))
                        .arg(arg!(-m --"last-modified-time" <VALUE> "last modified time of the objects [YYYY-mm-dd HH:MM:SS]")
                            .required(true)
                            .default_value("1970-01-01 00:00:00"))
                        .arg(arg!(-g --predicate <VALUE> "predicate to filter objects [newer, older]")
                            .required(true)
                            .default_value("newer"))
                        .arg(arg!(-v --versions "List objects versions in an S3 bucket"))
                        .arg(arg!(-p --pretty "Pretty print output").action(ArgAction::SetTrue))
                        .arg_required_else_help(true),
                ),
            )
    }

    #[allow(clippy::single_match)]
    pub fn run() {
        let matches = Cli::cmd().get_matches();
        match matches.subcommand() {
            Some(("s3", s3_matches)) => match s3_matches.subcommand() {
                Some(("bucket", _)) => {
                    println!("S3 bucket API...");
                }
                Some(("objects", _)) => {
                    println!("S3 objects API...");
                }
                _ => (),
            },
            _ => (),
        }
    }
}