Helmet search from Goodreads to-read shelf

helmet-search-from-goodreads-to-read-shelf.markdown

Helmet search from Goodreads to-read shelf

A Pen by Hannu Hartikainen on CodePen.

License.

index.html

<h1>Helmet search from Goodreads to-read shelf</h1>

<p>Goodreads user id: <input id="user" /> <button onclick="refresh()">Go!</button></p>

<p>(note: you need to set profile visible to 'anyone' in <a href="https://www.goodreads.com/user/edit?tab=settings" target="_blank">Goodreads settings</a>)</p>

<hr/>

<table id="books">
</table>
<pre id="debug"></pre>

script.js

function fetchGoodreadsShelf(id) {
  const url = `https://webtask.it.auth0.com/api/run/wt-hannu-hartikainen-gmail-com-1/goodreads?id=${id}`;
  return fetch(url)
    .then(response => {
      if (!response.ok) throw response;
      return response.json()
    });
}

function getBookFromReview(review) {
  const book = review.book;
  console.log(book.title, book); // for debugging
  const out = {
    isbn13: book.isbn13,
    title: book.title,
    author: book.authors.author.name, // TODO: multiple authors
    rating: book.average_rating,
    url: book.link
  }
  return out;
}

function printDebug(data) {
  document.getElementById('debug').innerText = JSON.stringify(data, null, 2);
  return data;
}

function createTd(text, href) {
  const td = document.createElement('td');
  const textNode = document.createTextNode(text);
  var content;
  if (href) {
    content = document.createElement('a');
    content.setAttribute('href', href);
    content.setAttribute('target', '_blank');
    content.appendChild(textNode);
  } else {
    content = textNode;
  }
  td.appendChild(content);
  return td;
}

const SURNAME_RE = /(.*) ([^ ]*)/
function surnameFirst(author) {
  const [_, firstname, surname] = author.match(SURNAME_RE);
  return `${surname}, ${firstname}`;
}

// strip goodreads additions like series name and number
function strippedTitle(title) {
  return title.replace(/ *\(.*, #.*\)/, '');
}

function authorSearchLink(book) {
  return `http://luettelo.helmet.fi/search~S9*fin/?searchtype=a&searcharg=${surnameFirst(book.author)}`;
}

function titleSearchLink(book) {
  return `http://luettelo.helmet.fi/search~S9*fin/?searchtype=t&searcharg=${strippedTitle(book.title)}`;
}

function createRowFromBook(book) {
  const tr = document.createElement('tr');
  tr.appendChild(createTd(book.rating, book.url))
  tr.appendChild(createTd(book.author, authorSearchLink(book)));
  tr.appendChild(createTd(book.title, titleSearchLink(book)));
  return tr;
}

function insertRows(rows) {
  const table = document.getElementById('books')
  const docFrag = document.createDocumentFragment();
  rows.map(row => docFrag.appendChild(row))
  
  while(table.firstChild) {
    table.removeChild(table.firstChild);
  }
  table.appendChild(docFrag);
}

function setMsg(msg) {
  document.getElementById('books').innerHTML = `<tr><td>${msg}</td></tr>`;
}

function init() {
  const id = localStorage.getItem('goodreadsUser') || '20719991';
  document.getElementById('user').value = id;
}

function refresh() {
  const id = document.getElementById('user').value;
  localStorage.setItem('goodreadsUser', id)
  setMsg(`Fetching Goodreads to-read shelf for user ${id}...`);
  fetchGoodreadsShelf(id)
    .catch(() => setMsg("Couldn't fetch data from Goodreads!"))
    .then(json => json.reviews.review) // the structure: wtf
    .then(reviews => reviews.map(getBookFromReview))
    //.then(printDebug)
    .then(books => books.map(createRowFromBook))
    .then(insertRows)
    // TODO: handle processing errors
}

// run automatically
init();
refresh();

/* // webtask code:
var Request = require('request');
var xml2js = require('xml2js@0.4.8');
var parser = new xml2js.Parser({
  explicitRoot: false,
  explicitArray: false
});

module.exports = function (ctx, done) {
  var id = ctx.data.id || 20719991;
  var options = {
    url: `https://www.goodreads.com/review/list/${id}.xml?key=${ctx.secrets.GOODREADS_API_KEY}&v=2&shelf=to-read&per_page=200`,
    time: true
  };
  
  console.log('Requesting', options.url);
  
  Request.get(options, function (err, res, body) {
    parser.parseString(body, function(err_, json) {
      delete json.Request.key;
      done(err_, json);
    });
  });
};
*/