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/**
* This file contain some functions to interact with the Book Lender API provided by Udacity.
*
* From the URL https://reactnd-books-api.udacity.com follows the API calls specs:
*
* Use an Authorization header to work with your own data:
*
* fetch(url, { headers: { 'Authorization': 'whatever-you-want' }})
*
* The following endpoints are available:
*
* GET /status
* GET /books
* GET /books/:id
* PUT /books/:id { shelf }
* POST /search { query, maxResults }
*/
import * as BookUtils from './BookUtils';
const api = "https://reactnd-books-api.udacity.com";
// Generate a unique token for retrieving get one book API call since it doesn't need the any user related data
// a not logged user could access it.
let token = localStorage.token;
if (!token)
token = Math.random().toString(36).substr(-8);
const headers = {
'Accept': 'application/json',
'Authorization': token,
};
/**
* @description Returns the details of a book. Implement the API call GET /books/:id. Note: this is the only function
* that use token randomly generated by this script instead of the user address because the BookInfo components
* that uses this function needs to request data for logged and not logged users.
* @param {string} bookId - The id of the book.
* @returns {Promise.object} The book object if successfully or an object with errorCode key with the http status error.
*/
export const get = (bookId) =>
fetch(`${api}/books/${bookId}`, {headers})
.then(res => {
if (res.status !== 200) {
return res;
}
return res.json();
})
.then(data => {
// Only happen if status is 200
if (data.book) {
return data.book;
}
// Return the object with with http status (error code)
return {errorCode: data.status};
});
/**
* @description Get all classified books (books with shelf data) available for a particular address. Implements the call
* to API GET /books.
* @returns {Promise.array} Array of book objects (same book object returned by get()).
*/
export const getAll = () => {
const headers = BookUtils.getAccountHeaders();
return fetch(`${api}/books`, {headers})
.then(res => res.json())
.then(data => data.books);
};
/**
* @description Update a book with the informed shelf. Implements the call PUT /books/:id { shelf }.
* @param {object} book - The book object (same object returned at get() and getAll()).
* @param {string} shelf - The shelf ID (only available.
*/
export const update = (book, shelf) =>
fetch(`${api}/books/${book.id}`, {
method: 'PUT',
headers: {
...BookUtils.getAccountHeaders(),
'Content-Type': 'application/json'
},
body: JSON.stringify({shelf})
}).then(res => res.json());
/**
* @description Search books that contains a particular query term. Implements the call POST /search {query, maxResults}
* Note: The backend API uses a fixed set of cached search results and is limited to a particular set of search terms,
* which can be found in ./SEARCH_TERMS.md.
* @param {string} query - The search terms.
* @param {number} maxResults - Due to the nature of the backend server, search results are capped at 20, even if this
* is set higher.
*/
export const search = (query, maxResults) =>
fetch(`${api}/search`, {
method: 'POST',
headers: {
...BookUtils.getAccountHeaders(),
'Content-Type': 'application/json'
},
body: JSON.stringify({query, maxResults})
}).then(res => res.json())
.then(data => data.books);