import re
from datetime import datetime, timedelta

# Function to convert the date format
def convert_date_format(date_str):
    # Extract the date part using regex
    match = re.search(r'Date:\s*(\d{1,2})\s+(\w+)\s+(\d{4})\s+at\s+(\d{2}:\d{2}:\d{2})\s+GMT', date_str)
    if match:
        day = match.group(1)
        month = match.group(2)
        year = match.group(3)
        time = match.group(4)

        # Convert month name to month number
        month_number = datetime.strptime(month, '%B').month

        # Create a new datetime object
        dt = datetime(year=int(year), month=month_number, day=int(day), hour=int(time.split(':')[0]), minute=int(time.split(':')[1]), second=int(time.split(':')[2]))

        # Adjust the time if needed (e.g., to UTC+9)
        dt += timedelta(hours=21)

        # Format the new date string with AM/PM and "+++"
        return f"[{dt.strftime('%Y-%m-%d %I:%M:%S %p')}] +++"
    return date_str  # Return original if no match

# Read the input file and write to the output file
input_file = 'input.txt'  # Change to your input file name
output_file = 'output.txt'  # Change to your desired output file name

with open(input_file, 'r') as file:
    content = file.readlines()

with open(output_file, 'w') as file:
    for i, line in enumerate(content):
        # Write the formatted date line if it matches the format
        if 'Date:' in line:
            converted_line = convert_date_format(line)
            file.write(converted_line + '\n')  # Write the converted date line first
            file.write(line)  # Write the original date line
            
            # Check if there is a next line and write it (the original text line)
            if i + 1 < len(content):
                file.write(content[i + 1])  # Write the original text line
        else:
            # Write other lines unchanged
            file.write(line)