const path = require('path');
const chokidar = require('chokidar');
const fs = require('fs');
const { logger, ErrorLogger, logRequestInfo } = require('../config/logs');

// Define file paths
const userFilePath = path.resolve(__dirname, '../data/user.json');
const setupFilePath = path.resolve(__dirname, '../data/setup.json');
const collaborationFilePath = path.resolve(__dirname, '../data/collaboration.json');

// Initialize data objects
let userData, setupData, collaborationData;

// Load initial user data
try {
    userData = JSON.parse(fs.readFileSync(userFilePath, 'utf-8'));
} catch (error) {
    ErrorLogger.error(`Error parsing user.json: ${error}`);
}

// Load initial setup data
try {
    setupData = JSON.parse(fs.readFileSync(setupFilePath, 'utf-8'));
} catch (error) {
    ErrorLogger.error(`Error parsing setup.json: ${error}`);
}

// Load initial collaboration data
try {
    collaborationData = JSON.parse(fs.readFileSync(collaborationFilePath, 'utf-8'));
} catch (error) {
    ErrorLogger.error(`Error parsing collaboration.json: ${error}`);
}

// Set up file watcher
const watcher = chokidar.watch([userFilePath, setupFilePath, collaborationFilePath], {
    persistent: true
});

// Handle file changes
watcher.on('change', (filePath) => {
    let modifiedFile;
    
    try {
        if (filePath === userFilePath) {
            userData = JSON.parse(fs.readFileSync(filePath, 'utf-8'));
            modifiedFile = 'user.json';
        } else if (filePath === setupFilePath) {
            setupData = JSON.parse(fs.readFileSync(filePath, 'utf-8'));
            modifiedFile = 'setup.json';
        } else if (filePath === collaborationFilePath) {
            collaborationData = JSON.parse(fs.readFileSync(filePath, 'utf-8'));
            modifiedFile = 'collaboration.json';
        }
        
        logger.info(`File ${modifiedFile} has been modified`);
    } catch (error) {
        ErrorLogger.error(`Error parsing ${modifiedFile}: ${error}`);
    }
});

// Export data access functions
module.exports = {
    getUserData: () => Promise.resolve(userData),
    getSetupData: () => Promise.resolve(setupData),
    getCollaborationData: () => Promise.resolve(collaborationData)
};