extensions/canvas-zoom/detect_extension.py

import os
import sys
import json
import launch

# Path to Python executable
python = sys.executable

# Path to the 'canvas-zoom' extension
canvasZoomPath = os.path.join(sys.path[2], "extensions", "canvas-zoom")

# Path to the current script
script_path = os.path.realpath(__file__)

# Path to the 'requirements.txt' file
requirements_path = os.path.join(sys.path[2], "requirements.txt")
config_path = os.path.join(sys.path[2], "config.json")

# Define vars
gradio_version = None
should_script_work = False

# Read the version of 'gradio' from 'requirements.txt'
if os.path.isfile(requirements_path):
    with open(requirements_path, "r") as file:
        lines = file.readlines()
        gradio_line = next((line for line in lines if line.startswith("gradio")), None)
        gradio_version = gradio_line.split("==")[1].strip() if gradio_line else None
        should_script_work = True 

# In case we have not found anything, we skip this script.
if should_script_work:
    # Check if config.json exists
    if os.path.isfile(config_path):
        with open(config_path, 'r') as config_file:
            config = json.load(config_file)
            # Check if "canvas-zoom" is in the list of disabled_extensions
            if "canvas-zoom" in config.get('disabled_extensions', []):
                launch.run(f'"{python}" -m pip install --force-reinstall --no-deps gradio=={gradio_version}', desc=f"Uninstalling modified gradio for canvas-zoom", errdesc=f"Couldn't uninstall canvas-zoom", live=False)
                os.remove(script_path)

            # Check if disable_all_extensions is not "none"
            if config.get('disable_all_extensions', 'none') == 'all':
                launch.run(f'"{python}" -m pip install --force-reinstall --no-deps gradio=={gradio_version}', desc=f"Uninstalling modified gradio for canvas-zoom", errdesc=f"Couldn't uninstall canvas-zoom", live=False)
                os.remove(script_path)

    # Check if the folder exists
    if not os.path.exists(canvasZoomPath) and gradio_version is not None:
        # If the folder does not exist and we found 'gradio' version, uninstall 'gradio' and install it again
        launch.run(f'"{python}" -m pip install --force-reinstall --no-deps gradio=={gradio_version}', desc=f"Uninstalling modified gradio for canvas-zoom", errdesc=f"Couldn't uninstall canvas-zoom", live=False)
        # Deleting the file
        os.remove(script_path)