InputMCP

import { promises as fs } from 'fs'; import path from 'path'; import os from 'os'; /** * Get the cache directory for input-mcp based on the OS * - macOS: ~/Library/Caches/input-mcp * - Linux: ~/.cache/input-mcp * - Windows: %LOCALAPPDATA%/input-mcp/Cache */ export function getCacheDir(): string { const platform = process.platform; const homeDir = os.homedir(); switch (platform) { case 'darwin': // macOS return path.join(homeDir, 'Library', 'Caches', 'input-mcp'); case 'win32': // Windows return path.join(process.env.LOCALAPPDATA || path.join(homeDir, 'AppData', 'Local'), 'input-mcp', 'Cache'); default: // Linux and others return path.join(process.env.XDG_CACHE_HOME || path.join(homeDir, '.cache'), 'input-mcp'); } } /** * Ensure the cache directory exists */ export async function ensureCacheDir(): Promise<string> { const cacheDir = getCacheDir(); const imagesDir = path.join(cacheDir, 'images'); await fs.mkdir(imagesDir, { recursive: true }); return imagesDir; } /** * Generate a unique filename with timestamp */ export function generateImageFilename(): string { const now = new Date(); const timestamp = now.toISOString().replace(/[:.]/g, '-').replace('T', '_').slice(0, -1); const random = Math.random().toString(36).substring(2, 8); return `img_${timestamp}_${random}.png`; } /** * Save base64 image data to PNG file */ export async function saveImageToCache(dataUrl: string): Promise<string> { // Ensure cache directory exists const imagesDir = await ensureCacheDir(); // Extract base64 data from data URL const base64Data = dataUrl.replace(/^data:image\/\w+;base64,/, ''); const buffer = Buffer.from(base64Data, 'base64'); // Generate unique filename const filename = generateImageFilename(); const filepath = path.join(imagesDir, filename); // Write file await fs.writeFile(filepath, buffer); //console.error(`Image saved to cache: ${filepath}`); return filepath; } /** * Get the path to a cached image */ export function getCachedImagePath(filename: string): string { return path.join(getCacheDir(), 'images', filename); } /** * List all cached images */ export async function listCachedImages(): Promise<string[]> { const imagesDir = path.join(getCacheDir(), 'images'); try { const files = await fs.readdir(imagesDir); return files.filter(f => f.endsWith('.png')); } catch (error) { // Directory doesn't exist yet return []; } } /** * Clean old cache files (older than specified days) */ export async function cleanOldCache(daysToKeep: number = 7): Promise<number> { const imagesDir = path.join(getCacheDir(), 'images'); const now = Date.now(); const maxAge = daysToKeep * 24 * 60 * 60 * 1000; // Convert days to milliseconds let deletedCount = 0; try { const files = await fs.readdir(imagesDir); for (const file of files) { const filepath = path.join(imagesDir, file); const stats = await fs.stat(filepath); if (now - stats.mtimeMs > maxAge) { await fs.unlink(filepath); deletedCount++; } } } catch (error) { // Directory doesn't exist or other error console.error('Error cleaning cache:', error); } return deletedCount; }