use std::io::{self, IsTerminal, Write};

use crate::reconcile::Action;

/// Ask a yes/no question on stdin; anything but "y"/"yes" is a no.
pub fn prompt(prompt: &str) -> bool {
    print!("{prompt}");
    let _ = io::stdout().flush();
    let mut input = String::new();
    let _ = io::stdin().read_line(&mut input);
    matches!(input.trim().to_ascii_lowercase().as_str(), "y" | "yes")
}

/// Print an action line, color-coded if stdout is a terminal.
pub fn print_action(action: &Action, prune: bool) {
    let (code, text) = match action {
        Action::Create(_) => (32, action.describe()),
        Action::Update { .. } => (33, action.describe()),
        Action::Delete(_) if !prune => (31, format!("{} (skipped: --no-prune)", action.describe())),
        Action::Delete(_) => (31, action.describe()),
    };
    println!("{}", paint(code, &text));
}

fn paint(code: u8, text: &str) -> String {
    if io::stdout().is_terminal() {
        format!("\x1b[{code}m{text}\x1b[0m")
    } else {
        text.to_string()
    }
}