OpenFoodFacts-mcp

import fs from "fs"; import path from "path"; import { projectRoot } from "../config/server-config.js"; /** * Gets directory contents with type information * @param dirPath Path to the directory relative to project root * @returns Array of entries with their types */ export async function getDirectoryContents(dirPath: string): Promise<string> { const fullPath = path.resolve(projectRoot, dirPath); // Security check to prevent directory traversal if (!fullPath.startsWith(projectRoot)) { throw new Error("Access denied: Path outside project directory"); } const stats = await fs.promises.stat(fullPath); if (!stats.isDirectory()) { throw new Error(`Not a directory: ${dirPath}`); } const entries = await fs.promises.readdir(fullPath, { withFileTypes: true }); return entries.map(entry => { const type = entry.isDirectory() ? "directory" : "file"; return `${entry.name} (${type})`; }).join("\n"); } /** * Gets file contents with metadata * @param filepath Path to file relative to project root * @returns File content and metadata */ export async function getFileContents(filepath: string): Promise<{ content: string; metadata: { filename: string; extension: string; size: number; lastModified: string; } }> { const fullPath = path.resolve(projectRoot, filepath); // Security check to prevent directory traversal if (!fullPath.startsWith(projectRoot)) { throw new Error("Access denied: Path outside project directory"); } const stats = await fs.promises.stat(fullPath); if (!stats.isFile()) { throw new Error(`Not a file: ${filepath}`); } const content = await fs.promises.readFile(fullPath, 'utf8'); return { content, metadata: { filename: path.basename(filepath), extension: path.extname(filepath), size: stats.size, lastModified: stats.mtime.toISOString() } }; } /** * Attempts to read a JSON file * @param filepath Path to JSON file relative to project root * @returns Parsed JSON object or default value if file doesn't exist */ export async function readJsonFile<T>(filepath: string, defaultValue: T): Promise<T> { try { const fullPath = path.resolve(projectRoot, filepath); const content = await fs.promises.readFile(fullPath, 'utf8'); return JSON.parse(content) as T; } catch (error) { return defaultValue; } } /** * Find taxonomy file in possible locations * @param taxonomyId ID of the taxonomy to locate * @returns Object with content and path if found */ export async function findTaxonomyFile(taxonomyId: string): Promise<{ content: string; path: string; } | null> { // Map taxonomy ID to potential file locations const taxonomyPaths = [ `taxonomies/${taxonomyId}/taxonomy.txt`, `taxonomies/${taxonomyId}.txt`, `taxonomies/${taxonomyId}`, // Add more potential paths to cover all possibilities `taxonomies/${taxonomyId}.txt.typed`, `../taxonomies/${taxonomyId}/taxonomy.txt`, `../taxonomies/${taxonomyId}.txt`, `../taxonomies/${taxonomyId}`, `../taxonomies/${taxonomyId}.txt.typed` ]; // Try to find the taxonomy file for (const potentialPath of taxonomyPaths) { try { const fullPath = path.resolve(projectRoot, potentialPath); // Debug log to help diagnose issues console.debug(`Looking for taxonomy ${taxonomyId} at: ${fullPath}`); const stat = await fs.promises.stat(fullPath); if (stat.isFile()) { const content = await fs.promises.readFile(fullPath, 'utf8'); console.debug(`Found taxonomy ${taxonomyId} at: ${fullPath}`); return { content, path: potentialPath }; } } catch (err) { // File doesn't exist, try the next path continue; } } // If we reach here, we couldn't find the taxonomy file console.warn(`Taxonomy not found: ${taxonomyId}`); return null; }