import os
import datetime
import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler


def concatenate_files(files, output_file):
    with open(output_file, 'w') as outfile:
        for file_name in files:
            with open(file_name, 'r') as infile:
                # Read the content of each input file and write it to the output file
                outfile.write(infile.read())
                # Add a newline after each file to ensure proper separation
                outfile.write('\n')


class MyHandler(FileSystemEventHandler):
    def on_any_event(self, event):
        # if it doesnt end with output.py
        if event.src_path.endswith('.py') and not event.src_path.endswith(output_file):
            print(f"Change detected in {
                  event.src_path}. Concatenating files... ✂️")
            # Concatenate files when a change is detected
            concatenate_files(py_files, output_file)
            timestamp = datetime.datetime.now().strftime("%H:%M")
            print(f"[{timestamp}] - Files concatenated into '{
                  output_file}' successfully ✅")


if __name__ == "__main__":
    # Define the path to the main.sikuli folder
    sikuli_folder = 'main.sikuli'

    # Define the output file
    output_file = 'main.sikuli/output.py'

    if os.path.exists(output_file):
        os.remove(output_file)

    # Create an observer to monitor the main.sikuli folder
    observer = Observer()
    observer.schedule(MyHandler(), sikuli_folder, recursive=True)
    observer.start()

    try:
        while True:
            # Get all .py files from the main.sikuli folder
            py_files = [os.path.join(sikuli_folder, file) for file in os.listdir(
                sikuli_folder) if file.endswith('.py') and file != output_file]
            # Sort the file names alphabetically
            py_files.sort()
            time.sleep(1)  # Sleep for 1 second to avoid high CPU usage
    except KeyboardInterrupt:
        observer.stop()
    observer.join()