use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::Signature;

pub struct Pwd;

impl WholeStreamCommand for Pwd {
    fn name(&self) -> &str {
        "pwd"
    }

    fn signature(&self) -> Signature {
        Signature::build("pwd")
    }

    fn usage(&self) -> &str {
        "Output the current working directory."
    }

    fn run(
        &self,
        args: CommandArgs,
        registry: &CommandRegistry,
    ) -> Result<OutputStream, ShellError> {
        pwd(args, registry)
    }

    fn examples(&self) -> &[Example] {
        &[Example {
            description: "Print the current working directory",
            example: "pwd",
        }]
    }
}

pub fn pwd(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
    let shell_manager = args.shell_manager.clone();
    let args = args.evaluate_once(registry)?;
    shell_manager.pwd(args)
}