search.py

from typing import Dict, List, Union

from django.conf import settings

from requests import get
from urllib.parse import urlencode

BASE_URL = 'https://www.googleapis.com/books/v1/volumes'
DEFAULT_THUMBNAIL = {'thumbnail': 'https://bit.ly/2NG0A8J'}

def build_url(q: str) -> str:
    GET_params = urlencode({
        "q": f'intitle:{q}',
        "key": settings.BOOKS_API_SECRET_KEY,
    })
    return f'{BASE_URL}?{GET_params}'


def search(q: str) -> List[Dict[str, Union[str, List[str]]]]:
    volumes = []
    items = get(build_url(q)).json()['items']
    for item in items:
        info = item['volumeInfo']
        volumes.append({
            'title': info['title'],
            'authors': info.get('authors', []),
            'image': info.get('imageLinks', DEFAULT_THUMBNAIL)['thumbnail'],
        })
    return volumes