use std::{
    io::Write,
    process::{Command, Stdio},
};

use anyhow::{Context, Result};

pub fn select(options: &[String]) -> Result<String> {
    let mut child = Command::new("rofi")
        .args(["-sep", "\n", "-dmenu"])
        .stdin(Stdio::piped())
        .stdout(Stdio::piped())
        .spawn()
        .context("Failed to spawn rofi")?;

    let mut stdin = child
        .stdin
        .take()
        .expect("We piped this, so should be available");

    stdin
        .write_all(options.join("\n").as_bytes())
        .context("Failed to write to rofi's stdin")?;

    let output = child
        .wait_with_output()
        .context("Failed to wait for rofi's output")?;

    let selected = String::from_utf8(output.stdout.clone()).with_context(|| {
        format!(
            "Failed to decode '{}' as utf8",
            String::from_utf8_lossy(&output.stdout)
        )
    })?;

    Ok(selected.trim_end().to_owned())
}