# coding: utf-8
from __future__ import unicode_literals

import json
import re
import socket

from .common import InfoExtractor
from ..compat import (
    compat_etree_fromstring,
    compat_http_client,
    compat_str,
    compat_urllib_error,
    compat_urllib_parse_unquote,
    compat_urllib_parse_unquote_plus,
)
from ..utils import (
    clean_html,
    error_to_compat_str,
    ExtractorError,
    float_or_none,
    get_element_by_id,
    int_or_none,
    js_to_json,
    limit_length,
    parse_count,
    qualities,
    sanitized_Request,
    try_get,
    urlencode_postdata,
    urljoin,
)


class FacebookIE(InfoExtractor):
    _VALID_URL = r"""(?x)
                (?:
                    https?://
                        (?:[\w-]+\.)?(?:facebook\.com|facebookcorewwwi\.onion)/
                        (?:[^#]*?\#!/)?
                        (?:
                            (?:
                                video/video\.php|
                                photo\.php|
                                video\.php|
                                video/embed|
                                story\.php|
                                watch(?:/live)?/?
                            )\?(?:.*?)(?:v|video_id|story_fbid)=|
                            [^/]+/videos/(?:[^/]+/)?|
                            [^/]+/posts/|
                            groups/[^/]+/permalink/|
                            watchparty/
                        )|
                    facebook:
                )
                (?P<id>[0-9]+)
                """
    _LOGIN_URL = "https://www.facebook.com/login.php?next=http%3A%2F%2Ffacebook.com%2Fhome.php&login_attempt=1"
    _CHECKPOINT_URL = "https://www.facebook.com/checkpoint/?next=http%3A%2F%2Ffacebook.com%2Fhome.php&_fb_noscript=1"
    _NETRC_MACHINE = "facebook"
    IE_NAME = "facebook"

    _VIDEO_PAGE_TEMPLATE = "https://www.facebook.com/video/video.php?v=%s"
    _VIDEO_PAGE_TAHOE_TEMPLATE = "https://www.facebook.com/video/tahoe/async/%s/?chain=true&isvideo=true&payloadtype=primary"

    _TESTS = [
        {
            "url": "https://www.facebook.com/video.php?v=637842556329505&fref=nf",
            "md5": "6a40d33c0eccbb1af76cf0485a052659",
            "info_dict": {
                "id": "637842556329505",
                "ext": "mp4",
                "title": "re:Did you know Kei Nishikori is the first Asian man to ever reach a Grand Slam",
                "uploader": "Tennis on Facebook",
                "upload_date": "20140908",
                "timestamp": 1410199200,
            },
            "skip": "Requires logging in",
        },
        {
            # data.video
            "url": "https://www.facebook.com/video.php?v=274175099429670",
            "info_dict": {
                "id": "274175099429670",
                "ext": "mp4",
                "title": "re:^Asif Nawab Butt posted a video",
                "uploader": "Asif Nawab Butt",
                "upload_date": "20140506",
                "timestamp": 1399398998,
                "thumbnail": r"re:^https?://.*",
            },
            "expected_warnings": ["title"],
        },
        {
            "note": "Video with DASH manifest",
            "url": "https://www.facebook.com/video.php?v=957955867617029",
            "md5": "b2c28d528273b323abe5c6ab59f0f030",
            "info_dict": {
                "id": "957955867617029",
                "ext": "mp4",
                "title": "When you post epic content on instagram.com/433 8 million followers, this is ...",
                "uploader": "Demy de Zeeuw",
                "upload_date": "20160110",
                "timestamp": 1452431627,
            },
            "skip": "Requires logging in",
        },
        {
            "url": "https://www.facebook.com/maxlayn/posts/10153807558977570",
            "md5": "037b1fa7f3c2d02b7a0d7bc16031ecc6",
            "info_dict": {
                "id": "544765982287235",
                "ext": "mp4",
                "title": '"What are you doing running in the snow?"',
                "uploader": "FailArmy",
            },
            "skip": "Video gone",
        },
        {
            "url": "https://m.facebook.com/story.php?story_fbid=1035862816472149&id=116132035111903",
            "md5": "1deb90b6ac27f7efcf6d747c8a27f5e3",
            "info_dict": {
                "id": "1035862816472149",
                "ext": "mp4",
                "title": "What the Flock Is Going On In New Zealand  Credit: ViralHog",
                "uploader": "S. Saint",
            },
            "skip": "Video gone",
        },
        {
            "note": "swf params escaped",
            "url": "https://www.facebook.com/barackobama/posts/10153664894881749",
            "md5": "97ba073838964d12c70566e0085c2b91",
            "info_dict": {
                "id": "10153664894881749",
                "ext": "mp4",
                "title": "Average time to confirm recent Supreme Court nominees: 67 days Longest it's t...",
                "thumbnail": r"re:^https?://.*",
                "timestamp": 1456259628,
                "upload_date": "20160223",
                "uploader": "Barack Obama",
            },
        },
        {
            # have 1080P, but only up to 720p in swf params
            # data.video.story.attachments[].media
            "url": "https://www.facebook.com/cnn/videos/10155529876156509/",
            "md5": "9571fae53d4165bbbadb17a94651dcdc",
            "info_dict": {
                "id": "10155529876156509",
                "ext": "mp4",
                "title": "She survived the holocaust — and years later, she’s getting her citizenship s...",
                "timestamp": 1477818095,
                "upload_date": "20161030",
                "uploader": "CNN",
                "thumbnail": r"re:^https?://.*",
                "view_count": int,
            },
        },
        {
            # bigPipe.onPageletArrive ... onPageletArrive pagelet_group_mall
            # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.media
            "url": "https://www.facebook.com/yaroslav.korpan/videos/1417995061575415/",
            "info_dict": {
                "id": "1417995061575415",
                "ext": "mp4",
                "title": "md5:1db063d6a8c13faa8da727817339c857",
                "timestamp": 1486648217,
                "upload_date": "20170209",
                "uploader": "Yaroslav Korpan",
            },
            "params": {
                "skip_download": True,
            },
        },
        {
            "url": "https://www.facebook.com/LaGuiaDelVaron/posts/1072691702860471",
            "info_dict": {
                "id": "1072691702860471",
                "ext": "mp4",
                "title": "md5:ae2d22a93fbb12dad20dc393a869739d",
                "timestamp": 1477305000,
                "upload_date": "20161024",
                "uploader": "La Guía Del Varón",
                "thumbnail": r"re:^https?://.*",
            },
            "params": {
                "skip_download": True,
            },
        },
        {
            # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.media
            "url": "https://www.facebook.com/groups/1024490957622648/permalink/1396382447100162/",
            "info_dict": {
                "id": "1396382447100162",
                "ext": "mp4",
                "title": "md5:19a428bbde91364e3de815383b54a235",
                "timestamp": 1486035494,
                "upload_date": "20170202",
                "uploader": "Elisabeth Ahtn",
            },
            "params": {
                "skip_download": True,
            },
        },
        {
            "url": "https://www.facebook.com/video.php?v=10204634152394104",
            "only_matching": True,
        },
        {
            "url": "https://www.facebook.com/amogood/videos/1618742068337349/?fref=nf",
            "only_matching": True,
        },
        {
            # data.mediaset.currMedia.edges
            "url": "https://www.facebook.com/ChristyClarkForBC/videos/vb.22819070941/10153870694020942/?type=2&theater",
            "only_matching": True,
        },
        {
            # data.video.story.attachments[].media
            "url": "facebook:544765982287235",
            "only_matching": True,
        },
        {
            # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.media
            "url": "https://www.facebook.com/groups/164828000315060/permalink/764967300301124/",
            "only_matching": True,
        },
        {
            # data.video.creation_story.attachments[].media
            "url": "https://zh-hk.facebook.com/peoplespower/videos/1135894589806027/",
            "only_matching": True,
        },
        {
            # data.video
            "url": "https://www.facebookcorewwwi.onion/video.php?v=274175099429670",
            "only_matching": True,
        },
        {
            # no title
            "url": "https://www.facebook.com/onlycleverentertainment/videos/1947995502095005/",
            "only_matching": True,
        },
        {
            # data.video
            "url": "https://www.facebook.com/WatchESLOne/videos/359649331226507/",
            "info_dict": {
                "id": "359649331226507",
                "ext": "mp4",
                "title": "#ESLOne VoD - Birmingham Finals Day#1 Fnatic vs. @Evil Geniuses",
                "uploader": "ESL One Dota 2",
            },
            "params": {
                "skip_download": True,
            },
        },
        {
            # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.all_subattachments.nodes[].media
            "url": "https://www.facebook.com/100033620354545/videos/106560053808006/",
            "info_dict": {
                "id": "106560053808006",
            },
            "playlist_count": 2,
        },
        {
            # data.video.story.attachments[].media
            "url": "https://www.facebook.com/watch/?v=647537299265662",
            "only_matching": True,
        },
        {
            # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.all_subattachments.nodes[].media
            "url": "https://www.facebook.com/PankajShahLondon/posts/10157667649866271",
            "info_dict": {
                "id": "10157667649866271",
            },
            "playlist_count": 3,
        },
        {
            # data.nodes[].comet_sections.content.story.attachments[].style_type_renderer.attachment.media
            "url": "https://m.facebook.com/Alliance.Police.Department/posts/4048563708499330",
            "info_dict": {
                "id": "117576630041613",
                "ext": "mp4",
                # TODO: title can be extracted from video page
                "title": "Facebook video #117576630041613",
                "uploader_id": "189393014416438",
                "upload_date": "20201123",
                "timestamp": 1606162592,
            },
            "skip": "Requires logging in",
        },
        {
            # node.comet_sections.content.story.attached_story.attachments.style_type_renderer.attachment.media
            "url": "https://www.facebook.com/groups/ateistiskselskab/permalink/10154930137678856/",
            "info_dict": {
                "id": "211567722618337",
                "ext": "mp4",
                "title": "Facebook video #211567722618337",
                "uploader_id": "127875227654254",
                "upload_date": "20161122",
                "timestamp": 1479793574,
            },
        },
        {
            # data.video.creation_story.attachments[].media
            "url": "https://www.facebook.com/watch/live/?v=1823658634322275",
            "only_matching": True,
        },
        {
            "url": "https://www.facebook.com/watchparty/211641140192478",
            "info_dict": {
                "id": "211641140192478",
            },
            "playlist_count": 1,
            "skip": "Requires logging in",
        },
    ]
    _SUPPORTED_PAGLETS_REGEX = (
        r"(?:pagelet_group_mall|permalink_video_pagelet|hyperfeed_story_id_[0-9a-f]+)"
    )
    _api_config = {"graphURI": "/api/graphql/"}

    @staticmethod
    def _extract_urls(webpage):
        urls = []
        for mobj in re.finditer(
            r'<iframe[^>]+?src=(["\'])(?P<url>https?://www\.facebook\.com/(?:video/embed|plugins/video\.php).+?)\1',
            webpage,
        ):
            urls.append(mobj.group("url"))
        # Facebook API embed
        # see https://developers.facebook.com/docs/plugins/embedded-video-player
        for mobj in re.finditer(
            r"""(?x)<div[^>]+
                class=(?P<q1>[\'"])[^\'"]*\bfb-(?:video|post)\b[^\'"]*(?P=q1)[^>]+
                data-href=(?P<q2>[\'"])(?P<url>(?:https?:)?//(?:www\.)?facebook.com/.+?)(?P=q2)""",
            webpage,
        ):
            urls.append(mobj.group("url"))
        return urls

    def _login(self):
        useremail, password = self._get_login_info()
        if useremail is None:
            return

        login_page_req = sanitized_Request(self._LOGIN_URL)
        self._set_cookie("facebook.com", "locale", "en_US")
        login_page = self._download_webpage(
            login_page_req,
            None,
            note="Downloading login page",
            errnote="Unable to download login page",
        )
        lsd = self._search_regex(
            r'<input type="hidden" name="lsd" value="([^"]*)"', login_page, "lsd"
        )
        lgnrnd = self._search_regex(
            r'name="lgnrnd" value="([^"]*?)"', login_page, "lgnrnd"
        )

        login_form = {
            "email": useremail,
            "pass": password,
            "lsd": lsd,
            "lgnrnd": lgnrnd,
            "next": "http://facebook.com/home.php",
            "default_persistent": "0",
            "legacy_return": "1",
            "timezone": "-60",
            "trynum": "1",
        }
        request = sanitized_Request(self._LOGIN_URL, urlencode_postdata(login_form))
        request.add_header("Content-Type", "application/x-www-form-urlencoded")
        try:
            login_results = self._download_webpage(
                request, None, note="Logging in", errnote="unable to fetch login page"
            )
            if (
                re.search(r'<form(.*)name="login"(.*)</form>', login_results)
                is not None
            ):
                error = self._html_search_regex(
                    r'(?s)<div[^>]+class=(["\']).*?login_error_box.*?\1[^>]*><div[^>]*>.*?</div><div[^>]*>(?P<error>.+?)</div>',
                    login_results,
                    "login error",
                    default=None,
                    group="error",
                )
                if error:
                    raise ExtractorError("Unable to login: %s" % error, expected=True)
                self._downloader.report_warning(
                    "unable to log in: bad username/password, or exceeded login rate limit (~3/min). Check credentials or wait."
                )
                return

            fb_dtsg = self._search_regex(
                r'name="fb_dtsg" value="(.+?)"', login_results, "fb_dtsg", default=None
            )
            h = self._search_regex(
                r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"',
                login_results,
                "h",
                default=None,
            )

            if not fb_dtsg or not h:
                return

            check_form = {
                "fb_dtsg": fb_dtsg,
                "h": h,
                "name_action_selected": "dont_save",
            }
            check_req = sanitized_Request(
                self._CHECKPOINT_URL, urlencode_postdata(check_form)
            )
            check_req.add_header("Content-Type", "application/x-www-form-urlencoded")
            check_response = self._download_webpage(
                check_req, None, note="Confirming login"
            )
            if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
                self._downloader.report_warning(
                    "Unable to confirm login, you have to login in your browser and authorize the login."
                )
        except (
            compat_urllib_error.URLError,
            compat_http_client.HTTPException,
            socket.error,
        ) as err:
            self._downloader.report_warning(
                "unable to log in: %s" % error_to_compat_str(err)
            )
            return

    def _real_initialize(self):
        self._login()

    def _extract_from_url(self, url, video_id):
        webpage = self._download_webpage(
            url.replace("://m.facebook.com/", "://www.facebook.com/"), video_id
        )

        video_data = None

        def extract_video_data(instances):
            video_data = []
            for item in instances:
                if try_get(item, lambda x: x[1][0]) == "VideoConfig":
                    video_item = item[2][0]
                    if video_item.get("video_id"):
                        video_data.append(video_item["videoData"])
            return video_data

        server_js_data = self._parse_json(
            self._search_regex(
                [r'handleServerJS\(({.+})(?:\);|,")', r"\bs\.handle\(({.+?})\);"],
                webpage,
                "server js data",
                default="{}",
            ),
            video_id,
            fatal=False,
        )

        if server_js_data:
            video_data = extract_video_data(server_js_data.get("instances", []))

        def extract_from_jsmods_instances(js_data):
            if js_data:
                return extract_video_data(
                    try_get(js_data, lambda x: x["jsmods"]["instances"], list) or []
                )

        def extract_dash_manifest(video, formats):
            dash_manifest = video.get("dash_manifest")
            if dash_manifest:
                formats.extend(
                    self._parse_mpd_formats(
                        compat_etree_fromstring(
                            compat_urllib_parse_unquote_plus(dash_manifest)
                        )
                    )
                )

        def process_formats(formats):
            # Downloads with browser's User-Agent are rate limited. Working around
            # with non-browser User-Agent.
            for f in formats:
                f.setdefault("http_headers", {})[
                    "User-Agent"
                ] = "facebookexternalhit/1.1"

            self._sort_formats(formats)

        def extract_relay_data(_filter):
            return (
                self._parse_json(
                    self._search_regex(
                        r"handleWithCustomApplyEach\([^,]+,\s*({.*?%s.*?})\);"
                        % _filter,
                        webpage,
                        "replay data",
                        default="{}",
                    ),
                    video_id,
                    fatal=False,
                )
                or {}
            )

        def extract_relay_prefetched_data(_filter):
            replay_data = extract_relay_data(_filter)
            for require in replay_data.get("require") or []:
                if require[0] == "RelayPrefetchedStreamCache":
                    return (
                        try_get(
                            require, lambda x: x[3][1]["__bbox"]["result"]["data"], dict
                        )
                        or {}
                    )

        if not video_data:
            server_js_data = self._parse_json(
                self._search_regex(
                    [
                        r'bigPipe\.onPageletArrive\(({.+?})\)\s*;\s*}\s*\)\s*,\s*["\']onPageletArrive\s+'
                        + self._SUPPORTED_PAGLETS_REGEX,
                        r'bigPipe\.onPageletArrive\(({.*?id\s*:\s*"%s".*?})\);'
                        % self._SUPPORTED_PAGLETS_REGEX,
                    ],
                    webpage,
                    "js data",
                    default="{}",
                ),
                video_id,
                js_to_json,
                False,
            )
            video_data = extract_from_jsmods_instances(server_js_data)

        if not video_data:
            data = extract_relay_prefetched_data(
                r'"(?:dash_manifest|playable_url(?:_quality_hd)?)"\s*:\s*"[^"]+"'
            )
            if data:
                entries = []

                def parse_graphql_video(video):
                    formats = []
                    q = qualities(["sd", "hd"])
                    for (suffix, format_id) in [("", "sd"), ("_quality_hd", "hd")]:
                        playable_url = video.get("playable_url" + suffix)
                        if not playable_url:
                            continue
                        formats.append(
                            {
                                "format_id": format_id,
                                "quality": q(format_id),
                                "url": playable_url,
                            }
                        )
                    extract_dash_manifest(video, formats)
                    process_formats(formats)
                    v_id = video.get("videoId") or video.get("id") or video_id
                    info = {
                        "id": v_id,
                        "formats": formats,
                        "thumbnail": try_get(
                            video, lambda x: x["thumbnailImage"]["uri"]
                        ),
                        "uploader_id": try_get(video, lambda x: x["owner"]["id"]),
                        "timestamp": int_or_none(video.get("publish_time")),
                        "duration": float_or_none(
                            video.get("playable_duration_in_ms"), 1000
                        ),
                    }
                    description = try_get(
                        video, lambda x: x["savable_description"]["text"]
                    )
                    title = video.get("name")
                    if title:
                        info.update(
                            {
                                "title": title,
                                "description": description,
                            }
                        )
                    else:
                        info["title"] = description or "Facebook video #%s" % v_id
                    entries.append(info)

                def parse_attachment(attachment, key="media"):
                    media = attachment.get(key) or {}
                    if media.get("__typename") == "Video":
                        return parse_graphql_video(media)

                nodes = data.get("nodes") or []
                node = data.get("node") or {}
                if not nodes and node:
                    nodes.append(node)
                for node in nodes:
                    story = (
                        try_get(
                            node,
                            lambda x: x["comet_sections"]["content"]["story"],
                            dict,
                        )
                        or {}
                    )
                    attachments = (
                        try_get(
                            story,
                            [
                                lambda x: x["attached_story"]["attachments"],
                                lambda x: x["attachments"],
                            ],
                            list,
                        )
                        or []
                    )
                    for attachment in attachments:
                        attachment = try_get(
                            attachment,
                            lambda x: x["style_type_renderer"]["attachment"],
                            dict,
                        )
                        ns = (
                            try_get(
                                attachment,
                                lambda x: x["all_subattachments"]["nodes"],
                                list,
                            )
                            or []
                        )
                        for n in ns:
                            parse_attachment(n)
                        parse_attachment(attachment)

                edges = (
                    try_get(data, lambda x: x["mediaset"]["currMedia"]["edges"], list)
                    or []
                )
                for edge in edges:
                    parse_attachment(edge, key="node")

                video = data.get("video") or {}
                if video:
                    attachments = (
                        try_get(
                            video,
                            [
                                lambda x: x["story"]["attachments"],
                                lambda x: x["creation_story"]["attachments"],
                            ],
                            list,
                        )
                        or []
                    )
                    for attachment in attachments:
                        parse_attachment(attachment)
                    if not entries:
                        parse_graphql_video(video)

                return self.playlist_result(entries, video_id)

        if not video_data:
            m_msg = re.search(
                r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage
            )
            if m_msg is not None:
                raise ExtractorError(
                    'The video is not available, Facebook said: "%s"' % m_msg.group(1),
                    expected=True,
                )
            elif any(
                p in webpage
                for p in (
                    ">You must log in to continue",
                    'id="login_form"',
                    'id="loginbutton"',
                )
            ):
                self.raise_login_required()

        if not video_data and "/watchparty/" in url:
            post_data = {
                "doc_id": 3731964053542869,
                "variables": json.dumps(
                    {
                        "livingRoomID": video_id,
                    }
                ),
            }

            prefetched_data = extract_relay_prefetched_data(r'"login_data"\s*:\s*{')
            if prefetched_data:
                lsd = try_get(prefetched_data, lambda x: x["login_data"]["lsd"], dict)
                if lsd:
                    post_data[lsd["name"]] = lsd["value"]

            relay_data = extract_relay_data(r'\[\s*"RelayAPIConfigDefaults"\s*,')
            for define in relay_data.get("define") or []:
                if define[0] == "RelayAPIConfigDefaults":
                    self._api_config = define[2]

            living_room = self._download_json(
                urljoin(url, self._api_config["graphURI"]),
                video_id,
                data=urlencode_postdata(post_data),
            )["data"]["living_room"]

            entries = []
            for edge in (
                try_get(living_room, lambda x: x["recap"]["watched_content"]["edges"])
                or []
            ):
                video = try_get(edge, lambda x: x["node"]["video"]) or {}
                v_id = video.get("id")
                if not v_id:
                    continue
                v_id = compat_str(v_id)
                entries.append(
                    self.url_result(
                        self._VIDEO_PAGE_TEMPLATE % v_id,
                        self.ie_key(),
                        v_id,
                        video.get("name"),
                    )
                )

            return self.playlist_result(entries, video_id)

        if not video_data:
            # Video info not in first request, do a secondary request using
            # tahoe player specific URL
            tahoe_data = self._download_webpage(
                self._VIDEO_PAGE_TAHOE_TEMPLATE % video_id,
                video_id,
                data=urlencode_postdata(
                    {
                        "__a": 1,
                        "__pc": self._search_regex(
                            r'pkg_cohort["\']\s*:\s*["\'](.+?)["\']',
                            webpage,
                            "pkg cohort",
                            default="PHASED:DEFAULT",
                        ),
                        "__rev": self._search_regex(
                            r'client_revision["\']\s*:\s*(\d+),',
                            webpage,
                            "client revision",
                            default="3944515",
                        ),
                        "fb_dtsg": self._search_regex(
                            r'"DTSGInitialData"\s*,\s*\[\]\s*,\s*{\s*"token"\s*:\s*"([^"]+)"',
                            webpage,
                            "dtsg token",
                            default="",
                        ),
                    }
                ),
                headers={
                    "Content-Type": "application/x-www-form-urlencoded",
                },
            )
            tahoe_js_data = self._parse_json(
                self._search_regex(
                    r"for\s+\(\s*;\s*;\s*\)\s*;(.+)",
                    tahoe_data,
                    "tahoe js data",
                    default="{}",
                ),
                video_id,
                fatal=False,
            )
            video_data = extract_from_jsmods_instances(tahoe_js_data)

        if not video_data:
            raise ExtractorError("Cannot parse data")

        if len(video_data) > 1:
            entries = []
            for v in video_data:
                video_url = v[0].get("video_url")
                if not video_url:
                    continue
                entries.append(
                    self.url_result(
                        urljoin(url, video_url), self.ie_key(), v[0].get("video_id")
                    )
                )
            return self.playlist_result(entries, video_id)
        video_data = video_data[0]

        formats = []
        subtitles = {}
        for f in video_data:
            format_id = f["stream_type"]
            if f and isinstance(f, dict):
                f = [f]
            if not f or not isinstance(f, list):
                continue
            for quality in ("sd", "hd"):
                for src_type in ("src", "src_no_ratelimit"):
                    src = f[0].get("%s_%s" % (quality, src_type))
                    if src:
                        preference = -10 if format_id == "progressive" else 0
                        if quality == "hd":
                            preference += 5
                        formats.append(
                            {
                                "format_id": "%s_%s_%s"
                                % (format_id, quality, src_type),
                                "url": src,
                                "preference": preference,
                            }
                        )
            extract_dash_manifest(f[0], formats)
            subtitles_src = f[0].get("subtitles_src")
            if subtitles_src:
                subtitles.setdefault("en", []).append({"url": subtitles_src})
        if not formats:
            raise ExtractorError("Cannot find video formats")

        process_formats(formats)

        video_title = self._html_search_regex(
            r'<h2\s+[^>]*class="uiHeaderTitle"[^>]*>([^<]*)</h2>',
            webpage,
            "title",
            default=None,
        )
        if not video_title:
            video_title = self._html_search_regex(
                r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
                webpage,
                "alternative title",
                default=None,
            )
        if not video_title:
            video_title = self._html_search_meta(
                "description", webpage, "title", default=None
            )
        if video_title:
            video_title = limit_length(video_title, 80)
        else:
            video_title = "Facebook video #%s" % video_id
        uploader = (
            clean_html(get_element_by_id("fbPhotoPageAuthorName", webpage))
            or self._search_regex(
                r'ownerName\s*:\s*"([^"]+)"', webpage, "uploader", default=None
            )
            or self._og_search_title(webpage, fatal=False)
        )
        timestamp = int_or_none(
            self._search_regex(
                r'<abbr[^>]+data-utime=["\'](\d+)', webpage, "timestamp", default=None
            )
        )
        thumbnail = self._html_search_meta(["og:image", "twitter:image"], webpage)

        view_count = parse_count(
            self._search_regex(
                r'\bviewCount\s*:\s*["\']([\d,.]+)', webpage, "view count", default=None
            )
        )

        info_dict = {
            "id": video_id,
            "title": video_title,
            "formats": formats,
            "uploader": uploader,
            "timestamp": timestamp,
            "thumbnail": thumbnail,
            "view_count": view_count,
            "subtitles": subtitles,
        }

        return info_dict

    def _real_extract(self, url):
        video_id = self._match_id(url)

        real_url = (
            self._VIDEO_PAGE_TEMPLATE % video_id if url.startswith("facebook:") else url
        )
        return self._extract_from_url(real_url, video_id)


class FacebookPluginsVideoIE(InfoExtractor):
    _VALID_URL = r"https?://(?:[\w-]+\.)?facebook\.com/plugins/video\.php\?.*?\bhref=(?P<id>https.+)"

    _TESTS = [
        {
            "url": "https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fgov.sg%2Fvideos%2F10154383743583686%2F&show_text=0&width=560",
            "md5": "5954e92cdfe51fe5782ae9bda7058a07",
            "info_dict": {
                "id": "10154383743583686",
                "ext": "mp4",
                "title": "What to do during the haze?",
                "uploader": "Gov.sg",
                "upload_date": "20160826",
                "timestamp": 1472184808,
            },
            "add_ie": [FacebookIE.ie_key()],
        },
        {
            "url": "https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fvideo.php%3Fv%3D10204634152394104",
            "only_matching": True,
        },
        {
            "url": "https://www.facebook.com/plugins/video.php?href=https://www.facebook.com/gov.sg/videos/10154383743583686/&show_text=0&width=560",
            "only_matching": True,
        },
    ]

    def _real_extract(self, url):
        return self.url_result(
            compat_urllib_parse_unquote(self._match_id(url)), FacebookIE.ie_key()
        )
