compressAndRenameLosslessAudioFile.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

__author__ = 'Daniel Zhang (張道博)'

"""
Compress and rename a lossless audio file using a hard-coded path.

Following compression, call an AppleScript script that copies the newly
compressed file as an attachment to the currently selected note in Evernote.

Usage:

    python compressAndRenameLosslessAudioFile.py

"""

from datetime import datetime as dt
import subprocess
import os


def runCommand(cmd = ''):
    """
    Run a system command.

    :param cmd: string
    :returns: None
    """

    if cmd != '':
        try:
            subprocess.check_call(cmd, shell = True)
        except subprocess.CalledProcessError as error:
            print 'Exception occurred while calling the process to run ' \
                  'command: {}'.format(error)
        else:
            raise Exception('Empty command.')                  


def conciseNow():
    """
    The current date and time.
    :returns: string
    """

    return dt.now().strftime('%Y-%m-%d (%B %d) %H-%M-%S')


if __name__ == '__main__':
    myPath = '${MY_CUSTOM_AUDIO_PATH}'
    applescriptPath = '${MY_APPLESCRIPT_PATH}'

    os.chdir(myPath)
    runCommand(
        'afconvert audio-recording-lossless.m4a -o "{}.m4a" -q 127 -b 64000 ' \
        '-f m4af -d aac'.format(conciseNow()))
    runCommand('osascript {}/copyLastFileAsEvernoteAttachment.scpt'.format(
        applescriptPath))