Espanso add, from command line

# Python script to add Espanso trigger:/replace: pairs
# Usage: python script.py <trigger> <replace> [filename]

import subprocess
import sys
import os

def append_to_file(trigger, replace, filename):
    # Set default filename if not provided
    if not filename:
        filename = "add.yml"

    # Set path to the output file
    config_path = os.path.expanduser("~/.config/espanso/match/")
    output_file = os.path.join(config_path, filename)

    # Check if the file exists, if not, create it including "matches:" line
    if not os.path.isfile(output_file):
        with open(output_file, "w") as file:
            file.write("matches:\n")

    # Execute espanso match list command and capture its output
    try:
        output = subprocess.check_output(["espanso", "match", "list"], text=True)
    except subprocess.CalledProcessError as e:
        print("Error executing espanso command:", e)
        sys.exit()

    # Check if any line matches the condition
    existing_match = None
    for line in output.split('\n'):
        if line.startswith(trigger + " - "):
            existing_match = line
            break

    # If existing match found, print it and exit
    if existing_match:
        print("Found existing match for the trigger:")
        print(existing_match)
        sys.exit()

    # Append content to the file
    with open(output_file, "a") as file:
        file.write(f"  - trigger: {trigger}\n")
        file.write(f"    replace: {replace}\n")

    print(f"Content appended successfully to {output_file}.")

if __name__ == "__main__":
    # Check if trigger and replace are provided
    if len(sys.argv) < 3:
        print("Usage: python script.py <trigger> <replace> [filename]")
        sys.exit(1)

    trigger = sys.argv[1]
    replace = sys.argv[2]
    filename = sys.argv[3] if len(sys.argv) > 3 else None

    append_to_file(trigger, replace, filename)