from __future__ import unicode_literals

import re

from .common import InfoExtractor
from ..utils import (
    int_or_none,
    limit_length,
)


class InstagramIE(InfoExtractor):
    _VALID_URL = r'https://instagram\.com/p/(?P<id>[\da-zA-Z]+)'
    _TEST = {
        'url': 'https://instagram.com/p/aye83DjauH/?foo=bar#abc',
        'md5': '0d2da106a9d2631273e192b372806516',
        'info_dict': {
            'id': 'aye83DjauH',
            'ext': 'mp4',
            'uploader_id': 'naomipq',
            'title': 'Video by naomipq',
            'description': 'md5:1f17f0ab29bd6fe2bfad705f58de3cb8',
        }
    }

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

        webpage = self._download_webpage(url, video_id)
        uploader_id = self._search_regex(r'"owner":{"username":"(.+?)"',
                                         webpage, 'uploader id', fatal=False)
        desc = self._search_regex(r'"caption":"(.*?)"', webpage, 'description',
                                  fatal=False)

        return {
            'id': video_id,
            'url': self._og_search_video_url(webpage, secure=False),
            'ext': 'mp4',
            'title': 'Video by %s' % uploader_id,
            'thumbnail': self._og_search_thumbnail(webpage),
            'uploader_id': uploader_id,
            'description': desc,
        }


class InstagramUserIE(InfoExtractor):
    _VALID_URL = r'https://instagram\.com/(?P<username>[^/]{2,})/?(?:$|[?#])'
    IE_DESC = 'Instagram user profile'
    IE_NAME = 'instagram:user'
    _TEST = {
        'url': 'https://instagram.com/porsche',
        'info_dict': {
            'id': 'porsche',
            'title': 'porsche',
        },
        'playlist_mincount': 2,
        'playlist': [{
            'info_dict': {
                'id': '614605558512799803_462752227',
                'ext': 'mp4',
                'title': '#Porsche Intelligent Performance.',
                'thumbnail': 're:^https?://.*\.jpg',
                'uploader': 'Porsche',
                'uploader_id': 'porsche',
                'timestamp': 1387486713,
                'upload_date': '20131219',
            },
        }],
        'params': {
            'extract_flat': True,
            'skip_download': True,
        }
    }

    def _real_extract(self, url):
        mobj = re.match(self._VALID_URL, url)
        uploader_id = mobj.group('username')

        entries = []
        page_count = 0
        media_url = 'http://instagram.com/%s/media' % uploader_id
        while True:
            page = self._download_json(
                media_url, uploader_id,
                note='Downloading page %d ' % (page_count + 1),
            )
            page_count += 1

            for it in page['items']:
                if it.get('type') != 'video':
                    continue
                like_count = int_or_none(it.get('likes', {}).get('count'))
                user = it.get('user', {})

                formats = [{
                    'format_id': k,
                    'height': v.get('height'),
                    'width': v.get('width'),
                    'url': v['url'],
                } for k, v in it['videos'].items()]
                self._sort_formats(formats)

                thumbnails_el = it.get('images', {})
                thumbnail = thumbnails_el.get('thumbnail', {}).get('url')

                # In some cases caption is null, which corresponds to None
                # in python. As a result, it.get('caption', {}) gives None
                title = (it.get('caption') or {}).get('text', it['id'])

                entries.append({
                    'id': it['id'],
                    'title': limit_length(title, 80),
                    'formats': formats,
                    'thumbnail': thumbnail,
                    'webpage_url': it.get('link'),
                    'uploader': user.get('full_name'),
                    'uploader_id': user.get('username'),
                    'like_count': like_count,
                    'timestamp': int_or_none(it.get('created_time')),
                })

            if not page['items']:
                break
            max_id = page['items'][-1]['id']
            media_url = (
                'http://instagram.com/%s/media?max_id=%s' % (
                    uploader_id, max_id))

        return {
            '_type': 'playlist',
            'entries': entries,
            'id': uploader_id,
            'title': uploader_id,
        }
