portio/dist/utils/logoCache.js

A beautiful terminal UI for managing processes on network ports (Windows only)

import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import terminalImage from 'terminal-image';
const __dirname = path.dirname(fileURLToPath(import.meta.url));
// Cache for the rendered terminal image
let cachedImageAscii = null;
let cachePromise = null;
let isInitialized = false;
/**
 * Loads and caches the logo image as terminal ASCII art.
 * This function ensures the image is only rendered once and cached for all subsequent uses.
 */
export async function getLogoAscii() {
    // If already cached, return immediately
    if (cachedImageAscii !== null) {
        return cachedImageAscii;
    }
    // If already loading, wait for the existing promise
    if (cachePromise !== null) {
        return cachePromise;
    }
    // Start loading and cache the promise to prevent multiple parallel loads
    cachePromise = loadLogoImage();
    cachedImageAscii = await cachePromise;
    isInitialized = true;
    return cachedImageAscii;
}
/**
 * Gets the cached logo synchronously if available
 */
export function getLogoAsciiSync() {
    return isInitialized ? cachedImageAscii : null;
}
async function loadLogoImage() {
    try {
        // Try to find logo.png in project root
        const logoPath = path.join(__dirname, '..', '..', 'logo.png');
        if (!fs.existsSync(logoPath)) {
            return '';
        }
        const buffer = fs.readFileSync(logoPath);
        const ascii = await terminalImage.buffer(buffer, {
            width: 50,
            height: 40,
            preserveAspectRatio: true,
        });
        return ascii;
    }
    catch (error) {
        // Silently fail if logo can't be loaded
        return '';
    }
}
// Pre-load the logo at module initialization to ensure it's ready when needed
getLogoAscii();