add core.ac.uk engine

# SPDX-License-Identifier: AGPL-3.0-or-later

"""

Core Engine (science)

"""

from json import loads

from datetime import datetime

from urllib.parse import urlencode

about = {

    "website": 'https://core.ac.uk',

    "wikidata_id": 'Q22661180',

    "official_api_documentation": 'https://core.ac.uk/documentation/api/',

    "use_official_api": True,

    "require_api_key": True,

    "results": 'JSON',

}

categories = ['science']

paging = True

nb_per_page = 20

# apikey = ''

apikey = 'MVBozuTX8QF9I1D0GviL5bCn2Ueat6NS'

base_url = 'https://core.ac.uk:443/api-v2/search/'

search_string = '{query}?page={page}&pageSize={nb_per_page}&apiKey={apikey}'

def request(query, params):

    search_path = search_string.format(

        query=urlencode({'q': query}),

        nb_per_page=nb_per_page,

        page=params['pageno'],

        apikey=apikey)

    params['url'] = base_url + search_path

    return params

def response(resp):

    results = []

    json_data = loads(resp.text)

    for result in json_data['data']:

        time = result['_source']['publishedDate']

        if time is None:

            date = datetime.now()

        else:

            date = datetime.fromtimestamp(time / 1000)

        results.append({

            'url': result['_source']['urls'][0],

            'title': result['_source']['title'],

            'content': result['_source']['description'],

            'publishedDate': date})

    return results

    categories : images

    shortcut : cce

  - name : core.ac.uk

    engine : core

    categories : science

    shortcut : cor

    # get your API key from: https://core.ac.uk/api-keys/register/

    # api_key : "xxxxxxxx"

    # set api_key and comment out disabled ..

    disabled: True

  - name : crossref

    engine : json_engine

    paging : True