Sublime Text plugin to copy Rails migration version

copy_migration_version.py

import sublime
import sublime_plugin
import os
import json

class CopyMigrationVersionCommand(sublime_plugin.WindowCommand):
    def run(self):
        file_name = self.window.active_view().file_name()
        if file_name:
            version = os.path.basename(file_name).split('_')[0]
            sublime.set_clipboard(version)
            sublime.status_message(f"Copied: {version}")
        else:
            sublime.status_message("No file selected")

    def is_visible(self):
        file_name = self.window.active_view().file_name()
        if file_name:
          base_file_name = os.path.basename(file_name)
          if file_name.endswith(f"/db/migrate/{base_file_name}"):
            return True
        return False

# Add item in the side bar context menu
def plugin_loaded():
    context_menu_path = os.path.join(sublime.packages_path(), 'User', 'Side Bar.sublime-menu')
    context_menu = []

    if os.path.exists(context_menu_path):
        with open(context_menu_path, 'r') as file:
          context_menu = json.load(file)

    new_item = {
        "caption": "Copy Migration Version",
        "command": "copy_migration_version"
    }

    if new_item not in context_menu:
        context_menu.append(new_item)

        with open(context_menu_path, 'w') as f:
            f.write(sublime.encode_value(context_menu, pretty=True))