User: Task: "Create Handle Recurring Bookings Api"
    Description: "Generate a Node.js Handle Recurring Bookings Api with given dependenceis"
    Requirements:
    - Database: mongoose
    - Authentication: None specified
    - Output needed: Return only the function code as specified in dependencies
    - Dependencies: Create a Api to manage recurring bookings. Export: exports.createRecurringBooking = async () => {...}, 
Accept parameters: startDate, endDate, frequency (e.g., weekly, monthly), roomId., 
Validate required fields: Ensure startDate, endDate, frequency, and roomId are provided., 
Use a scheduling library (e.g., node-cron) to generate recurring booking dates based on the frequency., 
Check availability for each recurring date using the checkAvailability function., 
Create bookings for each recurring date and link them to the same user or service., 
Respond to user with a success message containing the booking details for each occurrence., 
Handle errors like conflicting bookings, invalid parameters, or database issues.
    - Previous Code 
const mongoose = require('mongoose');
// Importing the Booking model (assuming it has been defined elsewhere in your code)
const Booking = require('./models/Booking');

// Function to check availability of a room or service
exports.checkAvailability = async (checkInDate, checkOutDate, roomId) => {
    // Validate required fields
    if (!checkInDate || !checkOutDate || !roomId) {
        throw new Error('Missing required parameters: checkInDate, checkOutDate, and roomId are required.');
    }

    try {
        // Convert dates to appropriate format if needed (for example, using new Date())
        const checkIn = new Date(checkInDate);
        const checkOut = new Date(checkOutDate);

        // Query the Booking model to check for existing bookings during the specified date range
        const existingBooking = await Booking.findOne({
            roomId: roomId,
            $or: [
                { checkInDate: { $lt: checkOut }, checkOutDate: { $gt: checkIn } },
                { checkInDate: { $eq: checkIn }, checkOutDate: { $eq: checkOut } }
            ]
        });

        // If a booking already exists in the date range, indicate double booking
        if (existingBooking) {
            return {
                success: false,
                message: 'The room or service is unavailable for the selected date range due to a double booking.'
            };
        }

        // If no booking exists, indicate that the room or service is available
        return {
            success: true,
            message: 'The room or service is available for booking.'
        };
    } catch (error) {
        // Handle errors such as database connection errors
        console.error('Error checking availability:', error);
        throw new Error(`Error checking availability: ${error.message}`);
    }
};

// Function to manage time slots
exports.manageTimeSlots = async (date, serviceId, availableSlots) => {
    // Validate required fields
    if (!date || !serviceId || !Array.isArray(availableSlots) || availableSlots.length === 0) {
        throw new Error('Missing required parameters: date, serviceId, and availableSlots are required.');
    }

    try {
        // Ensure date is a valid date
        const slotDate = new Date(date);
        if (isNaN(slotDate)) {
            throw new Error('Invalid date provided.');
        }

        // Check for overlapping bookings
        const overlappingBookings = await Booking.find({
            serviceId: serviceId,
            $or: availableSlots.map(slot => ({
                date: slotDate,
                time: { $eq: slot } // Assuming Booking has a 'time' field
            }))
        });

        if (overlappingBookings.length > 0) {
            throw new Error('Some of the time slots overlap with existing bookings.');
        }

        // Update or create time slots for the given date and service
        for (let slot of availableSlots) {
            await TimeSlot.updateOne(
                { date: slotDate, serviceId: serviceId, time: slot },
                { $set: { available: true } }, // Assuming TimeSlot has an 'available' field
                { upsert: true } // Creates a new document if no match is found
            );
        }

        return {
            success: true,
            message: 'Available time slots have been successfully updated.'
        };

    } catch (error) {
        // Handle errors such as invalid date, overlapping time slots, or database issues
        console.error('Error managing time slots:', error);
        throw new Error(`Error managing time slots: ${error.message}`);
    }
};

    - Supporting data 
    - Updating File undefined
    
    Please generate the code for this task, following the instructions and including comments for clarity.
    While creating router for specifict file your have to read supporing file data and create for that 

    **Output Formats**: 

Return dependencies like this `const bcrypt = require('bcrypt');`  in this formate
```dependencies
const bcrypt = require('bcrypt');
```

Ensure this format is consistently followed in responses.
    
User: 


    
Assistant: