import json


engine_type = 'online_currency'
categories = []
url = 'https://duckduckgo.com/js/spice/currency/1/{0}/{1}'
weight = 100

https_support = True


def request(query, params):
    params['url'] = url.format(params['from'], params['to'])
    return params


def response(resp):
    """remove first and last lines to get only json"""
    json_resp = resp.text[resp.text.find('\n') + 1:resp.text.rfind('\n') - 2]
    results = []
    try:
        conversion_rate = float(json.loads(json_resp)['conversion']['converted-amount'])
    except:
        return results
    answer = '{0} {1} = {2} {3}, 1 {1} ({5}) = {4} {3} ({6})'.format(
        resp.search_params['amount'],
        resp.search_params['from'],
        resp.search_params['amount'] * conversion_rate,
        resp.search_params['to'],
        conversion_rate,
        resp.search_params['from_name'],
        resp.search_params['to_name'],
    )

    url = 'https://duckduckgo.com/js/spice/currency/1/{0}/{1}'.format(
        resp.search_params['from'].upper(), resp.search_params['to'])

    results.append({'answer': answer, 'url': url})

    return results
