From 74dc105210987c5754e6f9c03c01f02644a0baf3 Mon Sep 17 00:00:00 2001
From: Hugo Alves De Azevedo <hugo.azevedo@mercadolivre.com>
Date: Tue, 25 Aug 2020 22:39:20 -0300
Subject: [PATCH] - adding alura support

---
 youtube_dl/extractor/alura.py      | 119 +++++++++++++++++++++++++++++
 youtube_dl/extractor/extractors.py |   1 +
 2 files changed, 120 insertions(+)
 create mode 100644 youtube_dl/extractor/alura.py

diff --git a/youtube_dl/extractor/alura.py b/youtube_dl/extractor/alura.py
new file mode 100644
index 000000000..5f75bdaff
--- /dev/null
+++ b/youtube_dl/extractor/alura.py
@@ -0,0 +1,119 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+
+from ..compat import (
+    compat_str,
+    compat_urlparse,
+)
+
+from ..utils import (
+    dict_get,
+    ExtractorError,
+    float_or_none,
+    int_or_none,
+    parse_duration,
+    qualities,
+    srt_subtitles_timecode,
+    try_get,
+    update_url_query,
+    urlencode_postdata,
+)
+
+
+class AluraIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:cursos\.)?alura\.com\.br/course/(?P<course_name>[^/]+)/task/(?P<id>\d+)'
+    _LOGIN_URL = 'https://cursos.alura.com.br/loginForm?urlAfterLogin=/loginForm'
+    _VIDEO_URL = 'https://cursos.alura.com.br/course/%s/task/%s/video'
+    _TEST = {
+        'url': 'https://cursos.alura.com.br/course/design-patterns-python/task/9651',
+        'md5': 'TODO: md5 sum of the first 10241 bytes of the video file (use --test)',
+        'info_dict': {
+            'id': '9651',
+            'ext': 'mp4',
+            'title': 'Video title goes here',
+            'thumbnail': r're:^https?://.*\.jpg$',
+            # TODO more properties, either as:
+        }
+    }
+
+    def _real_extract(self, url):
+
+        video_id = self._match_id(url)
+        course = self._search_regex(self._VALID_URL, url, 'post url', group='course_name')
+        video_url = self._VIDEO_URL % (course,video_id)
+
+        video_dict = self._download_json(video_url, None, 'Searching for videos', expected_status=[404,500])
+
+        if video_dict:
+            webpage = self._download_webpage(url, video_id)
+            video_title = self._search_regex(
+                r'<span[^>]+class=(["\'])task-body-header-title-text\1[^>]*>(?P<title>[^<]+)',
+                webpage, 'title', group='title')
+
+            formats = []
+            for video_obj in video_dict:
+                video_url_m3u8 = video_obj.get('link')
+                video_format = self._extract_m3u8_formats(
+                    video_url_m3u8, None, 'mp4', entry_protocol='m3u8_native',
+                    m3u8_id='hls', fatal=False)
+
+                formats.extend(video_format)
+
+            return {
+                'id': video_id,
+                'title': video_title,
+                "formats": formats
+            }
+
+    def extract_output_format(src):
+        return {
+            'url': src.get('link'),
+            'manifest_url': src.get('linkWebm'),
+            'format': src.get('quality')
+        }
+
+    def _real_initialize(self):
+        self._login()
+
+    def _login(self):
+        username, password = self._get_login_info()
+        if username is None:
+            return
+        pass
+
+        login_page = self._download_webpage(
+            self._LOGIN_URL, None, 'Downloading login popup')
+
+        def is_logged(webpage):
+            return any(re.search(p, webpage) for p in (
+                r'href=[\"|\']?/signout[\"|\']',
+                r'>Logout<'))
+
+        # already logged in
+        if is_logged(login_page):
+            return
+
+        login_form = self._hidden_inputs(login_page)
+
+        login_form.update({
+            'username': username,
+            'password': password,
+        })
+
+        post_url = self._search_regex(
+            r'<form[^>]+class=["|\']signin-form["|\'] action=["|\'](?P<url>.+?)["|\']', login_page,
+            'post url', default=self._LOGIN_URL, group='url')
+
+        if not post_url.startswith('http'):
+            post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url)
+
+        self._download_webpage(
+            post_url, None, 'Logging in',
+            data=urlencode_postdata(login_form),
+            headers={'Content-Type': 'application/x-www-form-urlencoded'})
+
+
diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 1db21529f..1a1b3746b 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -36,6 +36,7 @@ from .afreecatv import AfreecaTVIE
 from .airmozilla import AirMozillaIE
 from .aljazeera import AlJazeeraIE
 from .alphaporno import AlphaPornoIE
+from .alura import AluraIE
 from .amcnetworks import AMCNetworksIE
 from .americastestkitchen import AmericasTestKitchenIE
 from .animeondemand import AnimeOnDemandIE