# Source code for searx.engines.demo_online

    # SPDX-License-Identifier: AGPL-3.0-or-later
    """Within this module we implement a *demo online engine*.  Do not look to
    close to the implementation, its just a simple example which queries `The Art
    Institute of Chicago <https://www.artic.edu>`_

    To get in use of this *demo* engine add the following entry to your engines
    list in ``settings.yml``:

    .. code:: yaml

      - name: my online engine
        engine: demo_online
        shortcut: demo
        disabled: false

    """

    from json import loads
    from urllib.parse import urlencode

    engine_type = 'online'
    send_accept_language_header = True
    categories = ['general']
    disabled = True
    timeout = 2.0
    categories = ['images']
    paging = True
    page_size = 20

    search_api = 'https://api.artic.edu/api/v1/artworks/search?'
    image_api = 'https://www.artic.edu/iiif/2/'

    about = {
        "website": 'https://www.artic.edu',
        "wikidata_id": 'Q239303',
        "official_api_documentation": 'http://api.artic.edu/docs/',
        "use_official_api": True,
        "require_api_key": False,
        "results": 'JSON',
    }

    # if there is a need for globals, use a leading underline
    _my_online_engine = None

    def init(engine_settings):
        """Initialization of the (online) engine.  If no initialization is needed, drop
        this init function.

        """
        global _my_online_engine  # pylint: disable=global-statement
        _my_online_engine = engine_settings.get('name')

    def request(query, params):
        """Build up the ``params`` for the online request.  In this example we build a
        URL to fetch images from `artic.edu <https://artic.edu>`__

        """
        args = urlencode(
            {
                'q': query,
                'page': params['pageno'],
                'fields': 'id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles',
                'limit': page_size,
            }
        )
        params['url'] = search_api + args
        return params

    def response(resp):
        """Parse out the result items from the response.  In this example we parse the
        response from `api.artic.edu <https://artic.edu>`__ and filter out all
        images.

        """
        results = []
        json_data = loads(resp.text)

        for result in json_data['data']:

            if not result['image_id']:
                continue

            results.append(
                {
                    'url': 'https://artic.edu/artworks/%(id)s' % result,
                    'title': result['title'] + " (%(date_display)s) // %(artist_display)s" % result,
                    'content': "%(medium_display)s // %(dimensions)s" % result,
                    'author': ', '.join(result['artist_titles']),
                    'img_src': image_api + '/%(image_id)s/full/843,/0/default.jpg' % result,
                    'template': 'images.html',
                }
            )

        return results