use crate::error::CommandError;

use format_bytes::format_bytes;

use hg::errors::{IoErrorContext, IoResultExt};

use hg::utils::files::get_bytes_from_path;

pub const HELP_TEXT: &str = "

Print the root directory of the current repository.

Returns 0 on success.

";

pub fn args() -> clap::Command {

    clap::command!("root").about(HELP_TEXT)

}

pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {

    let repo = invocation.repo?;

    let working_directory = repo.working_directory_path();

    let working_directory = std::fs::canonicalize(working_directory)

        .with_context(|| {

            IoErrorContext::CanonicalizingPath(working_directory.to_owned())

        })?;

    let bytes = get_bytes_from_path(working_directory);

    invocation

        .ui

        .write_stdout(&format_bytes!(b"{}\n", bytes.as_slice()))?;

    Ok(())

}