from __future__ import unicode_literals

import base64
import json
import re

from .common import InfoExtractor
from ..utils import (
    determine_ext,
    mimetype2ext,
    parse_duration,
    qualities,
    try_get,
    url_or_none,
)


class ImdbIE(InfoExtractor):
    IE_NAME = "imdb"
    IE_DESC = "Internet Movie Database trailers"
    _VALID_URL = (
        r"https?://(?:www|m)\.imdb\.com/(?:video|title|list).*?[/-]vi(?P<id>\d+)"
    )

    _TESTS = [
        {
            "url": "http://www.imdb.com/video/imdb/vi2524815897",
            "info_dict": {
                "id": "2524815897",
                "ext": "mp4",
                "title": "No. 2",
                "description": "md5:87bd0bdc61e351f21f20d2d7441cb4e7",
                "duration": 152,
            },
        },
        {
            "url": "http://www.imdb.com/video/_/vi2524815897",
            "only_matching": True,
        },
        {
            "url": "http://www.imdb.com/title/tt1667889/?ref_=ext_shr_eml_vi#lb-vi2524815897",
            "only_matching": True,
        },
        {
            "url": "http://www.imdb.com/title/tt1667889/#lb-vi2524815897",
            "only_matching": True,
        },
        {
            "url": "http://www.imdb.com/videoplayer/vi1562949145",
            "only_matching": True,
        },
        {
            "url": "http://www.imdb.com/title/tt4218696/videoplayer/vi2608641561",
            "only_matching": True,
        },
        {
            "url": "https://www.imdb.com/list/ls009921623/videoplayer/vi260482329",
            "only_matching": True,
        },
    ]

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

        data = self._download_json(
            "https://www.imdb.com/ve/data/VIDEO_PLAYBACK_DATA",
            video_id,
            query={
                "key": base64.b64encode(
                    json.dumps(
                        {
                            "type": "VIDEO_PLAYER",
                            "subType": "FORCE_LEGACY",
                            "id": "vi%s" % video_id,
                        }
                    ).encode()
                ).decode(),
            },
        )[0]

        quality = qualities(("SD", "480p", "720p", "1080p"))
        formats = []
        for encoding in data["videoLegacyEncodings"]:
            if not encoding or not isinstance(encoding, dict):
                continue
            video_url = url_or_none(encoding.get("url"))
            if not video_url:
                continue
            ext = mimetype2ext(encoding.get("mimeType")) or determine_ext(video_url)
            if ext == "m3u8":
                formats.extend(
                    self._extract_m3u8_formats(
                        video_url,
                        video_id,
                        "mp4",
                        entry_protocol="m3u8_native",
                        preference=1,
                        m3u8_id="hls",
                        fatal=False,
                    )
                )
                continue
            format_id = encoding.get("definition")
            formats.append(
                {
                    "format_id": format_id,
                    "url": video_url,
                    "ext": ext,
                    "quality": quality(format_id),
                }
            )
        self._sort_formats(formats)

        webpage = self._download_webpage(
            "https://www.imdb.com/video/vi" + video_id, video_id
        )
        video_metadata = self._parse_json(
            self._search_regex(
                r"args\.push\(\s*({.+?})\s*\)\s*;", webpage, "video metadata"
            ),
            video_id,
        )

        video_info = video_metadata.get("VIDEO_INFO")
        if video_info and isinstance(video_info, dict):
            info = try_get(video_info, lambda x: x[list(video_info.keys())[0]][0], dict)
        else:
            info = {}

        title = (
            self._html_search_meta(["og:title", "twitter:title"], webpage)
            or self._html_search_regex(
                r"<title>(.+?)</title>", webpage, "title", default=None
            )
            or info["videoTitle"]
        )

        return {
            "id": video_id,
            "title": title,
            "alt_title": info.get("videoSubTitle"),
            "formats": formats,
            "description": info.get("videoDescription"),
            "thumbnail": url_or_none(
                try_get(video_metadata, lambda x: x["videoSlate"]["source"])
            ),
            "duration": parse_duration(info.get("videoRuntime")),
        }


class ImdbListIE(InfoExtractor):
    IE_NAME = "imdb:list"
    IE_DESC = "Internet Movie Database lists"
    _VALID_URL = (
        r"https?://(?:www\.)?imdb\.com/list/ls(?P<id>\d{9})(?!/videoplayer/vi\d+)"
    )
    _TEST = {
        "url": "https://www.imdb.com/list/ls009921623/",
        "info_dict": {
            "id": "009921623",
            "title": "The Bourne Legacy",
            "description": "A list of trailers, clips, and more from The Bourne Legacy, starring Jeremy Renner and Rachel Weisz.",
        },
        "playlist_count": 8,
    }

    def _real_extract(self, url):
        list_id = self._match_id(url)
        webpage = self._download_webpage(url, list_id)
        entries = [
            self.url_result("http://www.imdb.com" + m, "Imdb")
            for m in re.findall(
                r'href="(/list/ls%s/videoplayer/vi[^"]+)"' % list_id, webpage
            )
        ]

        list_title = self._html_search_regex(
            r'<h1[^>]+class="[^"]*header[^"]*"[^>]*>(.*?)</h1>', webpage, "list title"
        )
        list_description = self._html_search_regex(
            r'<div[^>]+class="[^"]*list-description[^"]*"[^>]*><p>(.*?)</p>',
            webpage,
            "list description",
        )

        return self.playlist_result(entries, list_id, list_title, list_description)
