# SPDX-License-Identifier: AGPL-3.0-or-later
"""
Flickr (Images)

More info on api-key : https://www.flickr.com/services/apps/create/
"""

from json import loads
from urllib.parse import urlencode

# about
about = {
    "website": 'https://www.flickr.com',
    "wikidata_id": 'Q103204',
    "official_api_documentation": 'https://secure.flickr.com/services/api/flickr.photos.search.html',
    "use_official_api": True,
    "require_api_key": True,
    "results": 'JSON',
}

categories = ['images']

page_size = 15
paging = True
api_key = None


url = (
    'https://api.flickr.com/services/rest/?method=flickr.photos.search'
    + '&api_key={api_key}&{text}&sort=relevance'
    + '&extras=description%2C+owner_name%2C+url_o%2C+url_n%2C+url_z'
    + '&per_page={page_size}&format=json&nojsoncallback=1&page={page}'
)
photo_url = 'https://www.flickr.com/photos/{userid}/{photoid}'

paging = True


def build_flickr_url(user_id, photo_id):
    return photo_url.format(userid=user_id, photoid=photo_id)


def request(query, params):
    params['url'] = url.format(
        text=urlencode({'text': query}), api_key=api_key, page_size=page_size, page=params['pageno']
    )
    return params


def response(resp):
    results = []

    search_results = loads(resp.text)

    # return empty array if there are no results
    if 'photos' not in search_results:
        return []

    if 'photo' not in search_results['photos']:
        return []

    photos = search_results['photos']['photo']

    # parse results
    for photo in photos:
        if 'url_o' in photo:
            img_src = photo['url_o']
        elif 'url_z' in photo:
            img_src = photo['url_z']
        else:
            continue

        # For a bigger thumbnail, keep only the url_z, not the url_n
        if 'url_n' in photo:
            thumbnail_src = photo['url_n']
        elif 'url_z' in photo:
            thumbnail_src = photo['url_z']
        else:
            thumbnail_src = img_src

        # append result
        results.append(
            {
                'url': build_flickr_url(photo['owner'], photo['id']),
                'title': photo['title'],
                'img_src': img_src,
                'thumbnail_src': thumbnail_src,
                'content': photo['description']['_content'],
                'author': photo['ownername'],
                'template': 'images.html',
            }
        )

    # return results
    return results
