# coding: utf-8
from __future__ import unicode_literals

import re

from .common import InfoExtractor
from ..utils import (
    determine_ext,
    determine_protocol,
    parse_duration,
    int_or_none,
)


class Lecture2GoIE(InfoExtractor):
    _VALID_URL = r"https?://lecture2go\.uni-hamburg\.de/veranstaltungen/-/v/(?P<id>\d+)"
    _TEST = {
        "url": "https://lecture2go.uni-hamburg.de/veranstaltungen/-/v/17473",
        "md5": "ac02b570883020d208d405d5a3fd2f7f",
        "info_dict": {
            "id": "17473",
            "ext": "mp4",
            "title": "2 - Endliche Automaten und reguläre Sprachen",
            "creator": "Frank Heitmann",
            "duration": 5220,
        },
        "params": {
            # m3u8 download
            "skip_download": True,
        },
    }

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

        title = self._html_search_regex(
            r'<em[^>]+class="title">(.+)</em>', webpage, "title"
        )

        formats = []
        for url in set(re.findall(r'var\s+playerUri\d+\s*=\s*"([^"]+)"', webpage)):
            ext = determine_ext(url)
            protocol = determine_protocol({"url": url})
            if ext == "f4m":
                formats.extend(self._extract_f4m_formats(url, video_id, f4m_id="hds"))
            elif ext == "m3u8":
                formats.extend(
                    self._extract_m3u8_formats(url, video_id, ext="mp4", m3u8_id="hls")
                )
            else:
                if protocol == "rtmp":
                    continue  # XXX: currently broken
                formats.append(
                    {
                        "format_id": protocol,
                        "url": url,
                    }
                )

        self._sort_formats(formats)

        creator = self._html_search_regex(
            r'<div[^>]+id="description">([^<]+)</div>', webpage, "creator", fatal=False
        )
        duration = parse_duration(
            self._html_search_regex(
                r"Duration:\s*</em>\s*<em[^>]*>([^<]+)</em>",
                webpage,
                "duration",
                fatal=False,
            )
        )
        view_count = int_or_none(
            self._html_search_regex(
                r"Views:\s*</em>\s*<em[^>]+>(\d+)</em>",
                webpage,
                "view count",
                fatal=False,
            )
        )

        return {
            "id": video_id,
            "title": title,
            "formats": formats,
            "creator": creator,
            "duration": duration,
            "view_count": view_count,
        }
