# -*- encoding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

import re


def get_video_embed_code(video_url):
    ''' Computes the valid iframe from given URL that can be embedded
        (or False in case of invalid URL).
    '''

    if not video_url:
        return False

    # To detect if we have a valid URL or not
    validURLRegex = r'^(http:\/\/|https:\/\/|\/\/)[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$'

    # Regex for few of the widely used video hosting services
    ytRegex = r'^(?:(?:https?:)?\/\/)?(?:www\.)?(?:youtu\.be\/|youtube(-nocookie)?\.com\/(?:embed\/|v\/|watch\?v=|watch\?.+&v=))((?:\w|-){11})(?:\S+)?$'
    vimeoRegex = r'\/\/(player.)?vimeo.com\/([a-z]*\/)*([0-9]{6,11})[?]?.*'
    dmRegex = r'.+dailymotion.com\/(video|hub|embed)\/([^_]+)[^#]*(#video=([^_&]+))?'
    igRegex = r'(.*)instagram.com\/p\/(.[a-zA-Z0-9]*)'
    ykuRegex = r'(.*).youku\.com\/(v_show\/id_|embed\/)(.+)'

    if not re.search(validURLRegex, video_url):
        return False
    else:
        embedUrl = False
        ytMatch = re.search(ytRegex, video_url)
        vimeoMatch = re.search(vimeoRegex, video_url)
        dmMatch = re.search(dmRegex, video_url)
        igMatch = re.search(igRegex, video_url)
        ykuMatch = re.search(ykuRegex, video_url)

        if ytMatch and len(ytMatch.groups()[1]) == 11:
            embedUrl = '//www.youtube%s.com/embed/%s?rel=0' % (ytMatch.groups()[0] or '', ytMatch.groups()[1])
        elif vimeoMatch:
            embedUrl = '//player.vimeo.com/video/%s' % (vimeoMatch.groups()[2])
        elif dmMatch:
            embedUrl = '//www.dailymotion.com/embed/video/%s' % (dmMatch.groups()[1])
        elif igMatch:
            embedUrl = '//www.instagram.com/p/%s/embed/' % (igMatch.groups()[1])
        elif ykuMatch:
            ykuLink = ykuMatch.groups()[2]
            if '.html?' in ykuLink:
                ykuLink = ykuLink.split('.html?')[0]
            embedUrl = '//player.youku.com/embed/%s' % (ykuLink)
        else:
            # We directly use the provided URL as it is
            embedUrl = video_url
        return '<iframe class="embed-responsive-item" src="%s" allowFullScreen="true" frameborder="0"></iframe>' % embedUrl