/**
 * generalFunctions/index.js
 * -----------------------------------------------------------
 * Central barrel file for re-exporting helpers and configurations.
 * Provides both namespace exports and dynamic loading capabilities.
 */

// Core helper modules
const menuUtils = require('./src/helper/menuUtils.js');
const outputUtils = require('./src/helper/outputUtils.js');
const logger = require('./src/helper/logger.js');
const validation = require('./src/helper/validationUtils.js');
const configUtils = require('./src/helper/configUtils.js');

// Domain-specific modules
const measurements = require('./src/measurements/index.js');
const nrmse = require('./src/nrmse/ErrorMetrics.js');
const state = require('./src/state/state.js');

// Configuration loader with error handling
function loadConfig(path) {
    try {
        return require(path);
    } catch (error) {
        console.warn(`Failed to load config: ${path}`, error);
        return null;
    }
}

// Configurations
const configs = {
    get projectSettings() {
        return loadConfig('./configs/projectSettings.json');
    },
    get measurementConfig() {
        return loadConfig('./configs/measurementConfig.json');
    }
};

// Dynamic loaders with validation
function loadHelper(name) {
    if (!name || typeof name !== 'string') {
        throw new Error('Helper name must be a non-empty string');
    }
    
    try {
        return require(`./src/helper/${name}.js`);
    } catch (error) {
        throw new Error(`Failed to load helper "${name}": ${error.message}`);
    }
}

function loadAssetDatasets() {
    try {
        return require('./datasets/assetData/suppliers.json');
    } catch (error) {
        throw new Error(`Failed to load asset datasets: ${error.message}`);
    }
}

// Export everything
module.exports = {
    menuUtils,
    outputUtils,
    configUtils,
    logger,
    validation,
    measurements,
    nrmse,
    state,
    configs,
    loadHelper,
    loadAssetDatasets
};