decode_timestring.py

from datetime import datetime, timedelta


def decode_time_string(time_string):
    # Split the string into its components
    components = time_string.split('-')
    
    # Check if the string has the correct number of components
    if len(components) != 4:
        raise ValueError("Input string does not have the correct format")

    week_number, day_name, hour, minute = components

    # Get the current date
    current_date = datetime.now().date()

    # Find the first occurrence of the given day name in the current month
    current_month = current_date.month
    current_year = current_date.year
    first_day_of_month = datetime(current_year, current_month, 1)
    while first_day_of_month.strftime('%A') != day_name:
        first_day_of_month += timedelta(days=1)

    # Calculate the actual date
    week_offset = (int(week_number[1:]) - 1) * 7
    target_date = first_day_of_month + timedelta(days=week_offset)

    # Parse the hour and minute from the string
    hour = int(hour)
    minute = int(minute)

    # Construct the final datetime object
    target_time = datetime(target_date.year, target_date.month, target_date.day, hour, minute)

    return target_time.strftime("%d-%m-%Y %H:%M")


# Test the function
time_string = "W3-Wednesday-08-00"
try:
    decoded_time = decode_time_string(time_string)
    print("Decoded time:", decoded_time)
except ValueError as e:
    print("Error:", e)