from __future__ import unicode_literals

import re

from .common import InfoExtractor
from ..utils import (
    extract_attributes,
    ExtractorError,
    get_element_by_class,
    js_to_json,
)


class SteamIE(InfoExtractor):
    _VALID_URL = r"""(?x)
        https?://store\.steampowered\.com/
            (agecheck/)?
            (?P<urltype>video|app)/ #If the page is only for videos or for a game
            (?P<gameID>\d+)/?
            (?P<videoID>\d*)(?P<extra>\??) # For urltype == video we sometimes get the videoID
        |
        https?://(?:www\.)?steamcommunity\.com/sharedfiles/filedetails/\?id=(?P<fileID>[0-9]+)
    """
    _VIDEO_PAGE_TEMPLATE = "http://store.steampowered.com/video/%s/"
    _AGECHECK_TEMPLATE = "http://store.steampowered.com/agecheck/video/%s/?snr=1_agecheck_agecheck__age-gate&ageDay=1&ageMonth=January&ageYear=1970"
    _TESTS = [
        {
            "url": "http://store.steampowered.com/video/105600/",
            "playlist": [
                {
                    "md5": "6a294ee0c4b1f47f5bb76a65e31e3592",
                    "info_dict": {
                        "id": "2040428",
                        "ext": "mp4",
                        "title": "Terraria 1.3 Trailer",
                        "playlist_index": 1,
                    },
                },
                {
                    "md5": "911672b20064ca3263fa89650ba5a7aa",
                    "info_dict": {
                        "id": "2029566",
                        "ext": "mp4",
                        "title": "Terraria 1.2 Trailer",
                        "playlist_index": 2,
                    },
                },
            ],
            "info_dict": {
                "id": "105600",
                "title": "Terraria",
            },
            "params": {
                "playlistend": 2,
            },
        },
        {
            "url": "http://steamcommunity.com/sharedfiles/filedetails/?id=242472205",
            "info_dict": {
                "id": "X8kpJBlzD2E",
                "ext": "mp4",
                "upload_date": "20140617",
                "title": "FRONTIERS - Trapping",
                "description": "md5:bf6f7f773def614054089e5769c12a6e",
                "uploader": "AAD Productions",
                "uploader_id": "AtomicAgeDogGames",
            },
        },
    ]

    def _real_extract(self, url):
        m = re.match(self._VALID_URL, url)
        fileID = m.group("fileID")
        if fileID:
            videourl = url
            playlist_id = fileID
        else:
            gameID = m.group("gameID")
            playlist_id = gameID
            videourl = self._VIDEO_PAGE_TEMPLATE % playlist_id

        self._set_cookie("steampowered.com", "mature_content", "1")

        webpage = self._download_webpage(videourl, playlist_id)

        if (
            re.search("<h2>Please enter your birth date to continue:</h2>", webpage)
            is not None
        ):
            videourl = self._AGECHECK_TEMPLATE % playlist_id
            self.report_age_confirmation()
            webpage = self._download_webpage(videourl, playlist_id)

        flash_vars = self._parse_json(
            self._search_regex(
                r"(?s)rgMovieFlashvars\s*=\s*({.+?});", webpage, "flash vars"
            ),
            playlist_id,
            js_to_json,
        )

        playlist_title = None
        entries = []
        if fileID:
            playlist_title = get_element_by_class("workshopItemTitle", webpage)
            for movie in flash_vars.values():
                if not movie:
                    continue
                youtube_id = movie.get("YOUTUBE_VIDEO_ID")
                if not youtube_id:
                    continue
                entries.append(
                    {
                        "_type": "url",
                        "url": youtube_id,
                        "ie_key": "Youtube",
                    }
                )
        else:
            playlist_title = get_element_by_class("apphub_AppName", webpage)
            for movie_id, movie in flash_vars.items():
                if not movie:
                    continue
                video_id = self._search_regex(
                    r"movie_(\d+)", movie_id, "video id", fatal=False
                )
                title = movie.get("MOVIE_NAME")
                if not title or not video_id:
                    continue
                entry = {
                    "id": video_id,
                    "title": title.replace("+", " "),
                }
                formats = []
                flv_url = movie.get("FILENAME")
                if flv_url:
                    formats.append(
                        {
                            "format_id": "flv",
                            "url": flv_url,
                        }
                    )
                highlight_element = self._search_regex(
                    r'(<div[^>]+id="highlight_movie_%s"[^>]+>)' % video_id,
                    webpage,
                    "highlight element",
                    fatal=False,
                )
                if highlight_element:
                    highlight_attribs = extract_attributes(highlight_element)
                    if highlight_attribs:
                        entry["thumbnail"] = highlight_attribs.get("data-poster")
                        for quality in ("", "-hd"):
                            for ext in ("webm", "mp4"):
                                video_url = highlight_attribs.get(
                                    "data-%s%s-source" % (ext, quality)
                                )
                                if video_url:
                                    formats.append(
                                        {
                                            "format_id": ext + quality,
                                            "url": video_url,
                                        }
                                    )
                if not formats:
                    continue
                entry["formats"] = formats
                entries.append(entry)
        if not entries:
            raise ExtractorError("Could not find any videos")

        return self.playlist_result(entries, playlist_id, playlist_title)
