[CPAC] Add extractor for Canadian Parliament
diff --git a/youtube_dl/extractor/cpac.py b/youtube_dl/extractor/cpac.py
new file mode 100644
index 00000000000..22741152c64
--- /dev/null
+++ b/youtube_dl/extractor/cpac.py
@@ -0,0 +1,148 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..compat import compat_str
+from ..utils import (
+    int_or_none,
+    str_or_none,
+    try_get,
+    unified_timestamp,
+    update_url_query,
+    urljoin,
+)
+
+# compat_range
+try:
+    if callable(xrange):
+        range = xrange
+except (NameError, TypeError):
+    pass
+
+
+class CPACIE(InfoExtractor):
+    IE_NAME = 'cpac'
+    _VALID_URL = r'https?://(?:www\.)?cpac\.ca/(?P<fr>l-)?episode\?id=(?P<id>[\da-f]{8}(?:-[\da-f]{4}){3}-[\da-f]{12})'
+    _TEST = {
+        # 'url': 'http://www.cpac.ca/en/programs/primetime-politics/episodes/65490909',
+        'url': 'https://www.cpac.ca/episode?id=fc7edcae-4660-47e1-ba61-5b7f29a9db0f',
+        'md5': 'e46ad699caafd7aa6024279f2614e8fa',
+        'info_dict': {
+            'id': 'fc7edcae-4660-47e1-ba61-5b7f29a9db0f',
+            'ext': 'mp4',
+            'upload_date': '20220215',
+            'title': 'News Conference to Celebrate National Kindness Week – February 15, 2022',
+            'description': 'md5:466a206abd21f3a6f776cdef290c23fb',
+            'timestamp': 1644901200,
+        },
+        'params': {
+            'format': 'bestvideo',
+            'hls_prefer_native': True,
+        },
+    }
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        url_lang = 'fr' if '/l-episode?' in url else 'en'
+
+        content = self._download_json(
+            'https://www.cpac.ca/api/1/services/contentModel.json?url=/site/website/episode/index.xml&crafterSite=cpacca&id=' + video_id,
+            video_id)
+        video_url = try_get(content, lambda x: x['page']['details']['videoUrl'], compat_str)
+        formats = []
+        if video_url:
+            content = content['page']
+            title = str_or_none(content['details']['title_%s_t' % (url_lang, )])
+            formats = self._extract_m3u8_formats(video_url, video_id, m3u8_id='hls', ext='mp4')
+            for fmt in formats:
+                # prefer language to match URL
+                fmt_lang = fmt.get('language')
+                if fmt_lang == url_lang:
+                    fmt['language_preference'] = 10
+                elif not fmt_lang:
+                    fmt['language_preference'] = -1
+                else:
+                    fmt['language_preference'] = -10
+
+        self._sort_formats(formats)
+
+        category = str_or_none(content['details']['category_%s_t' % (url_lang, )])
+
+        def is_live(v_type):
+            return (v_type == 'live') if v_type is not None else None
+
+        return {
+            'id': video_id,
+            'formats': formats,
+            'title': title,
+            'description': str_or_none(content['details'].get('description_%s_t' % (url_lang, ))),
+            'timestamp': unified_timestamp(content['details'].get('liveDateTime')),
+            'category': [category] if category else None,
+            'thumbnail': urljoin(url, str_or_none(content['details'].get('image_%s_s' % (url_lang, )))),
+            'is_live': is_live(content['details'].get('type')),
+        }
+
+
+class CPACPlaylistIE(InfoExtractor):
+    IE_NAME = 'cpac:playlist'
+    _VALID_URL = r'(?i)https?://(?:www\.)?cpac\.ca/(?:program|search|(?P<fr>emission|rechercher))\?(?:[^&]+&)*?(?P<id>(?:id=\d+|programId=\d+|key=[^&]+))'
+
+    _TESTS = [{
+        'url': 'https://www.cpac.ca/program?id=6',
+        'info_dict': {
+            'id': 'id=6',
+            'title': 'Headline Politics',
+            'description': 'Watch CPAC’s signature long-form coverage of the day’s pressing political events as they unfold.',
+        },
+        'playlist_count': 10,
+    }, {
+        'url': 'https://www.cpac.ca/search?key=hudson&type=all&order=desc',
+        'info_dict': {
+            'id': 'key=hudson',
+            'title': 'hudson',
+        },
+        'playlist_count': 22,
+    }, {
+        'url': 'https://www.cpac.ca/search?programId=50',
+        'info_dict': {
+            'id': 'programId=50',
+            'title': '50',
+        },
+        'playlist_count': 9,
+    }, {
+        'url': 'https://www.cpac.ca/emission?id=6',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.cpac.ca/rechercher?key=hudson&type=all&order=desc',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        url_lang = 'fr' if any(x in url for x in ('/emission?', '/rechercher?')) else 'en'
+        pl_type, list_type = ('program', 'itemList') if any(x in url for x in ('/program?', '/emission?')) else ('search', 'searchResult')
+        api_url = (
+            'https://www.cpac.ca/api/1/services/contentModel.json?url=/site/website/%s/index.xml&crafterSite=cpacca&%s'
+            % (pl_type, video_id, ))
+        content = self._download_json(api_url, video_id)
+        entries = []
+        total_pages = int_or_none(try_get(content, lambda x: x['page'][list_type]['totalPages']), default=1)
+        for page in range(1, total_pages + 1):
+            if page > 1:
+                api_url = update_url_query(api_url, {'page': '%d' % (page, ), })
+                content = self._download_json(
+                    api_url, video_id,
+                    note='Downloading continuation - %d' % (page, ),
+                    fatal=False)
+
+            for item in try_get(content, lambda x: x['page'][list_type]['item'], list) or []:
+                episode_url = urljoin(url, try_get(item, lambda x: x['url_%s_s' % (url_lang, )]))
+                if episode_url:
+                    entries.append(episode_url)
+
+        return self.playlist_result(
+            (self.url_result(entry) for entry in entries),
+            playlist_id=video_id,
+            playlist_title=try_get(content, lambda x: x['page']['program']['title_%s_t' % (url_lang, )]) or video_id.split('=')[-1],
+            playlist_description=try_get(content, lambda x: x['page']['program']['description_%s_t' % (url_lang, )]),
+        )
diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 50b7cb4a04f..9474c85193e 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -254,6 +254,10 @@
 from .condenast import CondeNastIE
 from .contv import CONtvIE
 from .corus import CorusIE
+from .cpac import (
+    CPACIE,
+    CPACPlaylistIE,
+)
 from .cracked import CrackedIE
 from .crackle import CrackleIE
 from .crooksandliars import CrooksAndLiarsIE

## Please follow the guide below

---

### Before submitting a *pull request* make sure you have:
- [x] [Searched](https://github.com/ytdl-org/youtube-dl/search?q=is%3Apr&type=Issues) the bugtracker for similar pull requests
- [x] Read [adding new extractor tutorial](https://github.com/ytdl-org/youtube-dl#adding-support-for-a-new-site)
- [x] Read [youtube-dl coding conventions](https://github.com/ytdl-org/youtube-dl#youtube-dl-coding-conventions) and adjusted the code to meet them
- [x] Covered the code with tests (note that PRs without tests will be REJECTED)
- [x] Checked the code with [flake8](https://pypi.python.org/pypi/flake8)

### In order to be accepted and merged into youtube-dl each piece of code must be in public domain or released under [Unlicense](http://unlicense.org/). Check one of the following options:
- [x] I am the original author of this code and I am willing to release it under [Unlicense](http://unlicense.org/)
- [ ] I am not the original author of this code but it is in public domain or released under [Unlicense](http://unlicense.org/) (provide reliable evidence)

### What is the purpose of your *pull request*?
- [ ] Bug fix
- [ ] Improvement
- [x] New extractor
- [ ] New feature

---

### Description of your *pull request* and other information

Adds support for CPAC (Canadian Parliament) through new extractors:
* CPACIE: single episode
* CPACPlaylistIE: playlists and searches.

Resolves #18148
Resolves #30668

Closes #18265 (superseded)
