Launch Application - For Alfred Workflow

app.py

'''
Launch Application (Emulate standard Alfred operation)
+ Requires Alfred Powerpack and Version 3+

A script meant to be used in Alfred Script Filter(Input) within
a workflow that is connected to a 'Open File' (Action)

looks for entries with ext '.app' in the directories in the _dir_list.

Creates a list of dicts as per the Alfred Documentation and returns
a json string back to Alfred

No recursion is attempted, thats why the list of directories to search.
I looked at doing it recursively, but this did not seem like a great
idea because of older versions, lack of os.scandir in Python 2 etc.
Basically beyond me.

@Phuket2
'''
import os
import json

_app_dir = os.path.expanduser('/Applications')
_utility_dir = os.path.join(_app_dir, 'Utilities')


# Directories to look for apps, you can add more dirs to the list,
# they will be searched!
# Dirs added need to be absolute paths
_dir_list = [_app_dir, _utility_dir]


def make_item(file_name, dir_name):
    return dict(
        uuid=file_name,
        title=os.path.splitext(file_name)[0],
        subtitle=os.path.join(dir_name, file_name),
        arg=os.path.join(dir_name, file_name),
        autocomplete=file_name,
        icon=dict(type='fileicon', path=os.path.join(dir_name, file_name)
                  )
    )


def make_app_list(dir_list):
    app_list = [make_item(fn, d) for d in dir_list for fn in os.listdir(d)
                if os.path.splitext(fn)[1] == '.app']

    app_list.sort(key=lambda x: x['title'])
    return json.dumps(dict(items=app_list))


print(make_app_list(_dir_list))