From 7fc60f4ee9129c67aecacd6f9164e98dbf7601f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sat, 13 May 2017 21:52:59 +0700
Subject: [PATCH] [upskill] Add extractor (closes #13043)

---
 youtube_dl/extractor/extractors.py |   4 +
 youtube_dl/extractor/upskill.py    | 176 +++++++++++++++++++++++++++++
 2 files changed, 180 insertions(+)
 create mode 100644 youtube_dl/extractor/upskill.py

diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 510c35fcb..811519925 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -1102,6 +1102,10 @@
     UplynkIE,
     UplynkPreplayIE,
 )
+from .upskill import (
+    UpskillIE,
+    UpskillCourseIE,
+)
 from .urort import UrortIE
 from .urplay import URPlayIE
 from .usanetwork import USANetworkIE
diff --git a/youtube_dl/extractor/upskill.py b/youtube_dl/extractor/upskill.py
new file mode 100644
index 000000000..30297b4dd
--- /dev/null
+++ b/youtube_dl/extractor/upskill.py
@@ -0,0 +1,176 @@
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from .wistia import WistiaIE
+from ..compat import compat_str
+from ..utils import (
+    clean_html,
+    ExtractorError,
+    get_element_by_class,
+    urlencode_postdata,
+    urljoin,
+)
+
+
+class UpskillBaseIE(InfoExtractor):
+    _LOGIN_URL = 'http://upskillcourses.com/sign_in'
+    _NETRC_MACHINE = 'upskill'
+
+    def _real_initialize(self):
+        self._login()
+
+    def _login(self):
+        username, password = self._get_login_info()
+        if username is None:
+            return
+
+        login_page, urlh = self._download_webpage_handle(
+            self._LOGIN_URL, None, 'Downloading login page')
+
+        login_url = compat_str(urlh.geturl())
+
+        login_form = self._hidden_inputs(login_page)
+
+        login_form.update({
+            'user[email]': username,
+            'user[password]': password,
+        })
+
+        post_url = self._search_regex(
+            r'<form[^>]+action=(["\'])(?P<url>(?:(?!\1).)+)\1', login_page,
+            'post url', default=login_url, group='url')
+
+        if not post_url.startswith('http'):
+            post_url = urljoin(login_url, post_url)
+
+        response = self._download_webpage(
+            post_url, None, 'Logging in',
+            data=urlencode_postdata(login_form),
+            headers={
+                'Content-Type': 'application/x-www-form-urlencoded',
+                'Referer': login_url,
+            })
+
+        # Successful login
+        if any(re.search(p, response) for p in (
+                r'class=["\']user-signout',
+                r'<a[^>]+\bhref=["\']/sign_out',
+                r'>\s*Log out\s*<')):
+            return
+
+        message = get_element_by_class('alert', response)
+        if message is not None:
+            raise ExtractorError(
+                'Unable to login: %s' % clean_html(message), expected=True)
+
+        raise ExtractorError('Unable to log in')
+
+
+class UpskillIE(UpskillBaseIE):
+    _VALID_URL = r'https?://(?:www\.)?upskillcourses\.com/courses/[^/]+/lectures/(?P<id>\d+)'
+
+    _TESTS = [{
+        'url': 'http://upskillcourses.com/courses/essential-web-developer-course/lectures/1747100',
+        'info_dict': {
+            'id': 'uzw6zw58or',
+            'ext': 'mp4',
+            'title': 'Welcome to the Course!',
+            'description': 'md5:8d66c13403783370af62ca97a7357bdd',
+            'duration': 138.763,
+            'timestamp': 1479846621,
+            'upload_date': '20161122',
+        },
+        'params': {
+            'skip_download': True,
+        },
+    }, {
+        'url': 'http://upskillcourses.com/courses/119763/lectures/1747100',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, video_id)
+
+        wistia_url = WistiaIE._extract_url(webpage)
+        if not wistia_url:
+            if any(re.search(p, webpage) for p in (
+                    r'class=["\']lecture-contents-locked',
+                    r'>\s*Lecture contents locked',
+                    r'id=["\']lecture-locked')):
+                self.raise_login_required('Lecture contents locked')
+
+        title = self._og_search_title(webpage, default=None)
+
+        return {
+            '_type': 'url_transparent',
+            'url': wistia_url,
+            'ie_key': WistiaIE.ie_key(),
+            'title': title,
+        }
+
+
+class UpskillCourseIE(UpskillBaseIE):
+    _VALID_URL = r'https?://(?:www\.)?upskillcourses\.com/courses/(?:enrolled/)?(?P<id>[^/?#&]+)'
+    _TESTS = [{
+        'url': 'http://upskillcourses.com/courses/essential-web-developer-course/',
+        'info_dict': {
+            'id': '119763',
+            'title': 'The Essential Web Developer Course (Free)',
+        },
+        'playlist_count': 192,
+    }, {
+        'url': 'http://upskillcourses.com/courses/119763/',
+        'only_matching': True,
+    }, {
+        'url': 'http://upskillcourses.com/courses/enrolled/119763',
+        'only_matching': True,
+    }]
+
+    @classmethod
+    def suitable(cls, url):
+        return False if UpskillIE.suitable(url) else super(
+            UpskillCourseIE, cls).suitable(url)
+
+    def _real_extract(self, url):
+        course_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, course_id)
+
+        course_id = self._search_regex(
+            r'data-course-id=["\'](\d+)', webpage, 'course id',
+            default=course_id)
+
+        entries = []
+
+        for mobj in re.finditer(
+                r'(?s)(?P<li><li[^>]+class=(["\'])(?:(?!\2).)*?section-item[^>]+>.+?</li>)',
+                webpage):
+            li = mobj.group('li')
+            if 'fa-youtube-play' not in li:
+                continue
+            lecture_url = self._search_regex(
+                r'<a[^>]+href=(["\'])(?P<url>(?:(?!\1).)+)\1', li,
+                'lecture url', default=None, group='url')
+            if not lecture_url:
+                continue
+            lecture_id = self._search_regex(
+                r'/lectures/(\d+)', lecture_url, 'lecture id', default=None)
+            title = self._html_search_regex(
+                r'<span[^>]+class=["\']lecture-name[^>]+>([^<]+)', li,
+                'title', default=None)
+            entries.append(
+                self.url_result(
+                    urljoin('http://upskillcourses.com/', lecture_url),
+                    ie=UpskillIE.ie_key(), video_id=lecture_id,
+                    video_title=clean_html(title)))
+
+        course_title = self._html_search_regex(
+            (r'(?s)<img[^>]+class=["\']course-image[^>]+>\s*<h\d>(.+?)</h',
+             r'(?s)<h\d[^>]+class=["\']course-title[^>]+>(.+?)</h'),
+            webpage, 'course title', fatal=False)
+
+        return self.playlist_result(entries, course_id, course_title)