//! Interactive prompt helpers for the CLI.
//!
//! The `prompt`/`prompt_optional`/`prompt_secret` family reads from stdin /
//! the TTY; the `prompt_keep`/`prompt_keep_opt`/`prompt_yesno` variants are
//! used by the edit handlers to keep current values when the user hits enter
//! at a blank prompt. `prompt_secret` honours `RELICARIO_TEST_ITEM_SECRET`
//! so integration tests (which don't have a TTY) can inject secrets.

use anyhow::Result;

/// `rpassword::prompt_password` wrapper that honours `RELICARIO_TEST_ITEM_SECRET`
/// for integration-test use (rpassword reads /dev/tty by default, which is
/// unavailable in assert_cmd-spawned children).
pub(crate) fn prompt_secret(label: &str) -> Result<String> {
    if let Some(s) = crate::test_item_secret_override() {
        return Ok(s);
    }
    rpassword::prompt_password(label).map_err(Into::into)
}

pub(crate) fn prompt(label: &str) -> Result<String> {
    eprint!("{label}: ");
    std::io::Write::flush(&mut std::io::stderr())?;
    let mut s = String::new();
    std::io::stdin().read_line(&mut s)?;
    let trimmed = s.trim().to_string();
    if trimmed.is_empty() { anyhow::bail!("{label} required"); }
    Ok(trimmed)
}

pub(crate) fn prompt_optional(label: &str) -> Result<Option<String>> {
    eprint!("{label} (leave blank to skip): ");
    std::io::Write::flush(&mut std::io::stderr())?;
    let mut s = String::new();
    std::io::stdin().read_line(&mut s)?;
    let trimmed = s.trim().to_string();
    Ok(if trimmed.is_empty() { None } else { Some(trimmed) })
}

pub(crate) fn prompt_keep(label: &str, current: &str) -> Result<Option<String>> {
    eprint!("{label} [{current}]: ");
    std::io::Write::flush(&mut std::io::stderr())?;
    let mut s = String::new();
    std::io::stdin().read_line(&mut s)?;
    let trimmed = s.trim().to_string();
    Ok(if trimmed.is_empty() { None } else { Some(trimmed) })
}

pub(crate) fn prompt_keep_opt(label: &str, current: Option<&str>) -> Result<Option<String>> {
    let display = current.unwrap_or("(none)");
    eprint!("{label} [{display}]: ");
    std::io::Write::flush(&mut std::io::stderr())?;
    let mut s = String::new();
    std::io::stdin().read_line(&mut s)?;
    let trimmed = s.trim().to_string();
    Ok(if trimmed.is_empty() { None } else { Some(trimmed) })
}

pub(crate) fn prompt_yesno(label: &str) -> Result<bool> {
    eprint!("{label} [y/N] ");
    std::io::Write::flush(&mut std::io::stderr())?;
    let mut s = String::new();
    std::io::stdin().read_line(&mut s)?;
    Ok(matches!(s.trim().to_ascii_lowercase().as_str(), "y" | "yes"))
}