tesseract/packages/amanuensis/src/utils/paths.ts

import * as fs from 'fs/promises';
import * as path from 'path';

export const searchForConfigFile = async () => {
	const filePath: string = path.resolve(process.cwd(), 'amanuensis.config.json');

	async function searchInDir(dirPath: string): Promise<string | null> {
		const configFile: string = path.join(dirPath, 'amanuensis.config.json');
		try {
			await fs.access(configFile, fs.constants.F_OK);
			return dirPath;
		} catch (err) {
			if (dirPath === path.dirname(dirPath)) {
				// Reached the root directory, config file not found
				return null;
			}
			const parentDir: string = path.dirname(dirPath);
			return searchInDir(parentDir);
		}
	}

	return searchInDir(filePath);
};