"""
 Blekko (Images)

 @website     https://blekko.com
 @provide-api yes (inofficial)

 @using-api   yes
 @results     JSON
 @stable      yes
 @parse       url, title, img_src
"""

from json import loads
from urllib import urlencode

# engine dependent config
categories = ['images']
paging = True
safesearch = True

# search-url
base_url = 'https://blekko.com'
search_url = '/api/images?{query}&c={c}'

# safesearch definitions
safesearch_types = {2: '1',
                    1: '',
                    0: '0'}


# do search-request
def request(query, params):
    c = (params['pageno'] - 1) * 48

    params['url'] = base_url +\
        search_url.format(query=urlencode({'q': query}),
                          c=c)

    if params['pageno'] != 1:
        params['url'] += '&page={pageno}'.format(pageno=(params['pageno']-1))

    # let Blekko know we wan't have profiling
    params['cookies']['tag_lesslogging'] = '1'

    # parse safesearch argument
    params['cookies']['safesearch'] = safesearch_types.get(params['safesearch'], '')

    return params


# get response from search-request
def response(resp):
    results = []

    search_results = loads(resp.text)

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

    for result in search_results:
        # append result
        results.append({'url': result['page_url'],
                        'title': result['title'],
                        'content': '',
                        'img_src': result['url'],
                        'template': 'images.html'})

    # return results
    return results
