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

from appscript import *
from aem import AEEnum
import sys
import time

def iTunes_main_pane():
    return app(u'System Events').application_processes[u'iTunes'].windows[u'iTunes'].splitter_groups[1].scroll_areas[1]

def wait_for_podcast_update(iTunes):
    # show 'Podcasts'
    iTunes.playlists[its.special_kind == AEEnum('kSpP')].reveal()
    podcast_status = iTunes_main_pane().outlines[1].rows.static_texts[1].value
    while any(status in (u'downloading', u'queued for download')
              for status in podcast_status.get()):
        time.sleep(0.5)

def wait_for_iPod_update(iTunes):
    # show iPod
    iTunes.sources[its.kind == AEEnum('kPod')].sources[1].library_playlists[1].reveal()
    sync_enabled = iTunes_main_pane().buttons[u'Sync'].enabled
    while True:
        try:
            if sync_enabled.get() == True:
                return
        except CommandError:
            pass
        time.sleep(0.5)

if __name__ == '__main__':
    iTunes = app('iTunes')
    print >> sys.stderr, 'Starting podcast update...'
    iTunes.updateAllPodcasts()
    print >> sys.stderr, 'Synchronizing iPod...'
    iTunes.update()
    wait_for_iPod_update(iTunes)
    print >> sys.stderr, 'Updating podcasts...'
    iTunes.updateAllPodcasts()
    wait_for_podcast_update(iTunes)
    print >> sys.stderr, 'Synchronizing iPod...'
    iTunes.update()
    wait_for_iPod_update(iTunes)
    app(id='net.sabi.UpdatePodcasts').quit()