from __future__ import unicode_literals

from .common import InfoExtractor
from ..utils import parse_iso8601


class HowcastIE(InfoExtractor):
    _VALID_URL = r"https?://(?:www\.)?howcast\.com/videos/(?P<id>\d+)"
    _TEST = {
        "url": "http://www.howcast.com/videos/390161-How-to-Tie-a-Square-Knot-Properly",
        "md5": "7d45932269a288149483144f01b99789",
        "info_dict": {
            "id": "390161",
            "ext": "mp4",
            "title": "How to Tie a Square Knot Properly",
            "description": "md5:dbe792e5f6f1489027027bf2eba188a3",
            "timestamp": 1276081287,
            "upload_date": "20100609",
            "duration": 56.823,
        },
        "params": {
            "skip_download": True,
        },
        "add_ie": ["Ooyala"],
    }

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

        webpage = self._download_webpage(url, video_id)

        embed_code = self._search_regex(
            r'<iframe[^>]+src="[^"]+\bembed_code=([^\b]+)\b',
            webpage,
            "ooyala embed code",
        )

        return {
            "_type": "url_transparent",
            "ie_key": "Ooyala",
            "url": "ooyala:%s" % embed_code,
            "id": video_id,
            "timestamp": parse_iso8601(
                self._html_search_meta("article:published_time", webpage, "timestamp")
            ),
        }
