neti 1.6.6

High-integrity code quality governance and transactional change management for AI-assisted development
Documentation 
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use super::items::ConfigItem;
use crate::config::Config;
use anyhow::Result;
use crossterm::{
    cursor, execute,
    style::{Color, Print, SetForegroundColor, ResetColor},
    terminal::{Clear, ClearType},
};
use std::io::{stdout, Write};

/// Renders the configuration UI
///
/// # Errors
/// Returns error if terminal manipulation fails.
pub fn draw(items: &[ConfigItem], selected: usize, config: &Config) -> Result<()> {
    let mut stdout = stdout();
    
    // Ensure we start at top-left and clear screen
    execute!(stdout, Clear(ClearType::All), cursor::MoveTo(0, 0))?;
    
    draw_header(&mut stdout)?;
    
    for (i, item) in items.iter().enumerate() {
        let row = u16::try_from(i + 2).unwrap_or(u16::MAX);
        execute!(stdout, cursor::MoveTo(0, row))?;
        draw_item(&mut stdout, *item, i == selected, config)?;
    }
    
    let footer_row = u16::try_from(items.len() + 3).unwrap_or(u16::MAX);
    execute!(stdout, cursor::MoveTo(0, footer_row))?;
    draw_footer(&mut stdout)?;
    
    stdout.flush()?;
    Ok(())
}

fn draw_header(stdout: &mut std::io::Stdout) -> Result<()> {
    execute!(
        stdout,
        SetForegroundColor(Color::Cyan),
        Print("┌─ Neti Configuration ──────────────────"),
        ResetColor
    )?;
    Ok(())
}

fn draw_item(stdout: &mut std::io::Stdout, item: ConfigItem, is_selected: bool, config: &Config) -> Result<()> {
    let prefix = if is_selected { "│ >" } else { "│  " };
    let value = item.get_value(config);
    let label = item.label();
    
    if is_selected {
        execute!(stdout, SetForegroundColor(Color::Yellow))?;
    }
    
    // Explicit \r\n to ensure cursor returns to start of line if wrapped
    // But since we use MoveTo, just print is enough.
    // However, explicit `\r` is safer in raw mode.
    write!(stdout, "{prefix} {label:<25} {value}")?;
    
    if is_selected {
        execute!(stdout, ResetColor)?;
    }
    Ok(())
}

fn draw_footer(stdout: &mut std::io::Stdout) -> Result<()> {
    execute!(
        stdout,
        Print("│\r\n"),
        Print("│  [S]ave  [Esc] Cancel\r\n"),
        SetForegroundColor(Color::Cyan),
        Print("└───────────────────────────────────────────"),
        ResetColor
    )?;
    Ok(())
}