use clap::Arg;

use hg::matchers::ReSyntax;

use crate::error::CommandError;

use super::debugignorerhg::WhichPatterns;

pub const HELP_TEXT: &str = "

Show effective hgignore patterns used by rhg.

This is a pure Rust version of `hg debugignore`.

Some options might be missing, check the list below.

";

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

    clap::command!("script::hgignore")

    .arg(

        Arg::new("print-re")

            .help("Print the regular expression that matches all ignored files.")

            .action(clap::ArgAction::SetTrue)

            .long("print-re"),

    ).about(HELP_TEXT)

}

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

    let repo = invocation.repo?;

    let args = invocation.subcommand_args;

    let print_re = args.get_flag("print-re");

    if !print_re {

        return Err(CommandError::unsupported(

            "Unsupported invocation: flag --print-re is required",

        ));

    }

    crate::commands::debugignorerhg::work(

        repo,

        invocation.ui,

        WhichPatterns::All,

        ReSyntax::Tidy,

    )

}