+ def _extract_course_info(self, webpage, video_id):
+ course = self._parse_json(
+ unescapeHTML(self._search_regex(
+ r'ng-init=["\'].*\bcourse=({.+?});', webpage, 'course', default='{}')),
+ video_id, fatal=False) or {}
+ course_id = course.get('id') or self._search_regex(
+ (r'"id"\s*:\s*(\d+)', r'data-course-id=["\'](\d+)'),
+ webpage, 'course id')
+ return course_id, course.get('title')
+
+ def _enroll_course(self, base_url, webpage, course_id):
+ def combine_url(base_url, url):
+ return compat_urlparse.urljoin(base_url, url) if not url.startswith('http') else url
+
+ checkout_url = unescapeHTML(self._search_regex(
+ r'href=(["\'])(?P<url>(?:https?://(?:www\.)?udemy\.com)?/payment/checkout/.+?)\1',
+ webpage, 'checkout url', group='url', default=None))
+ if checkout_url:
+ raise ExtractorError(
+ 'Course %s is not free. You have to pay for it before you can download. '
+ 'Use this URL to confirm purchase: %s'
+ % (course_id, combine_url(base_url, checkout_url)),
+ expected=True)
+
+ enroll_url = unescapeHTML(self._search_regex(
+ r'href=(["\'])(?P<url>(?:https?://(?:www\.)?udemy\.com)?/course/subscribe/.+?)\1',
+ webpage, 'enroll url', group='url', default=None))
+ if enroll_url:
+ webpage = self._download_webpage(
+ combine_url(base_url, enroll_url),
+ course_id, 'Enrolling in the course',
+ headers={'Referer': base_url})
+ if '>You have enrolled in' in webpage:
+ self.to_screen('%s: Successfully enrolled in the course' % course_id)
+
+ def _download_lecture(self, course_id, lecture_id):
+ return self._download_json(
+ 'https://www.udemy.com/api-2.0/users/me/subscribed-courses/%s/lectures/%s?'
+ % (course_id, lecture_id),
+ lecture_id, 'Downloading lecture JSON', query={
+ 'fields[lecture]': 'title,description,view_html,asset',
+ 'fields[asset]': 'asset_type,stream_url,thumbnail_url,download_urls,data',
+ })
+