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# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""Within this module we implement a *demo online engine*. Do not look to
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close to the implementation, its just a simple example which queries `The Art
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Institute of Chicago <https://www.artic.edu>`_
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To get in use of this *demo* engine add the following entry to your engines
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list in ``settings.yml``:
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.. code:: yaml
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- name: my online engine
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engine: demo_online
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shortcut: demo
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disabled: false
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"""
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from json import loads
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from urllib.parse import urlencode
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engine_type = 'online'
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send_accept_language_header = True
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categories = ['general']
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disabled = True
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timeout = 2.0
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categories = ['images']
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paging = True
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page_size = 20
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search_api = 'https://api.artic.edu/api/v1/artworks/search?'
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image_api = 'https://www.artic.edu/iiif/2/'
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about = {
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"website": 'https://www.artic.edu',
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"wikidata_id": 'Q239303',
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"official_api_documentation": 'http://api.artic.edu/docs/',
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"use_official_api": True,
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"require_api_key": False,
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"results": 'JSON',
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}
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# if there is a need for globals, use a leading underline
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_my_online_engine = None
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def init(engine_settings):
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"""Initialization of the (online) engine. If no initialization is needed, drop
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this init function.
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"""
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global _my_online_engine # pylint: disable=global-statement
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_my_online_engine = engine_settings.get('name')
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def request(query, params):
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"""Build up the ``params`` for the online request. In this example we build a
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URL to fetch images from `artic.edu <https://artic.edu>`__
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"""
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args = urlencode(
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{
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'q': query,
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'page': params['pageno'],
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'fields': 'id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles',
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'limit': page_size,
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}
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)
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params['url'] = search_api + args
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return params
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def response(resp):
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"""Parse out the result items from the response. In this example we parse the
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response from `api.artic.edu <https://artic.edu>`__ and filter out all
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images.
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"""
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results = []
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json_data = loads(resp.text)
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for result in json_data['data']:
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if not result['image_id']:
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continue
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results.append(
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{
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'url': 'https://artic.edu/artworks/%(id)s' % result,
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'title': result['title'] + " (%(date_display)s) // %(artist_display)s" % result,
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'content': result['medium_display'],
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'author': ', '.join(result['artist_titles']),
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'img_src': image_api + '/%(image_id)s/full/843,/0/default.jpg' % result,
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'img_format': result['dimensions'],
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'template': 'images.html',
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}
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)
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return results
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