use clap::{builder::PossibleValue, Arg, ArgAction, Command, ValueHint};

pub fn basic_command(name: &'static str) -> Command {
    Command::new(name)
        .arg(
            Arg::new("config")
                .short('c')
                .global(true)
                .action(ArgAction::SetTrue),
        )
        .arg(
            Arg::new("v")
                .short('v')
                .conflicts_with("config")
                .action(ArgAction::SetTrue),
        )
        .subcommand(
            Command::new("test")
                .about("Subcommand")
                .arg(Arg::new("debug").short('d').action(ArgAction::Count)),
        )
}

pub fn feature_sample_command(name: &'static str) -> Command {
    Command::new(name)
        .version("3.0")
        .propagate_version(true)
        .about("Tests completions")
        .arg(
            Arg::new("file")
                .value_hint(ValueHint::FilePath)
                .help("some input file"),
        )
        .arg(
            Arg::new("config")
                .action(ArgAction::Count)
                .help("some config file")
                .short('c')
                .visible_short_alias('C')
                .long("config")
                .visible_alias("conf"),
        )
        .arg(Arg::new("choice").value_parser(["first", "second"]))
        .subcommand(
            Command::new("test").about("tests things").arg(
                Arg::new("case")
                    .long("case")
                    .action(ArgAction::Set)
                    .help("the case to test"),
            ),
        )
}

pub fn aliases_command(name: &'static str) -> Command {
    Command::new(name)
        .version("3.0")
        .about("testing nushell completions")
        .arg(
            Arg::new("flag")
                .short('f')
                .visible_short_alias('F')
                .long("flag")
                .action(ArgAction::SetTrue)
                .visible_alias("flg")
                .help("cmd flag"),
        )
        .arg(
            Arg::new("option")
                .short('o')
                .visible_short_alias('O')
                .long("option")
                .visible_alias("opt")
                .help("cmd option")
                .action(ArgAction::Set),
        )
        .arg(Arg::new("positional"))
}

pub fn sub_subcommands_command(name: &'static str) -> Command {
    feature_sample_command(name).subcommand(
        Command::new("some_cmd")
            .about("top level subcommand")
            .subcommand(
                Command::new("sub_cmd").about("sub-subcommand").arg(
                    Arg::new("config")
                        .long("config")
                        .action(ArgAction::Set)
                        .value_parser([PossibleValue::new("Lest quotes aren't escaped.")])
                        .help("the other case to test"),
                ),
            ),
    )
}

pub fn assert_matches_path(
    expected_path: impl AsRef<std::path::Path>,
    gen: impl clap_complete::Generator,
    mut cmd: Command,
    name: &'static str,
) {
    let mut buf = vec![];
    clap_complete::generate(gen, &mut cmd, name, &mut buf);

    snapbox::Assert::new()
        .action_env("SNAPSHOTS")
        .matches_path(expected_path, buf);
}