help

/// Shows a list of all commands
#[poise::command(slash_command, prefix_command)]
pub async fn help(
    ctx: Context<'_>,
    #[description = "The command to get help for"]
    #[autocomplete = "help_autocomplete"]
    command: Option<String>,
) -> Result<(), Error> {
    let config = HelpConfiguration::default();

    match command {
        Some(cmd) => help_single_command(ctx, &cmd, config).await?,
        None => help_all_commands(ctx, config).await?,
    };

    Ok(())
}

async fn help_autocomplete<'a>(ctx: Context<'_>, partial: &'a str) -> Vec<String> {
    let cmds = &ctx.framework().options.commands;
    let locale = ctx.locale().unwrap_or("en-US");

    cmds.iter()
        .filter(move |cmd| {
            let name = cmd.name_localizations.get(locale).unwrap_or(&cmd.name);
            name.starts_with(partial)
        })
        .map(move |cmd| {
            let name = cmd.name_localizations.get(locale).unwrap_or(&cmd.name);
            name.to_string()
        })
        .collect::<Vec<_>>()
}