GreaseMonkey script to check Kobo prices in this forum

[davidfor]

Firstly, this is shamelessy stolen from GreaseMonkey script to check Kindle prices in this forum.

Below is a Greasemonkey script for checking prices of books in the Kobo store. This looks at the link posted and adds the price after the link. If you are logged into you Kobo account, it will also show whether you already own the book.

I have been using this for a while and it works well. But, I mainly use the Australian shop. As far as I can tell, they are all the same, but there might be some differences. If you have any problems, please report them here and I will have a look at it.

To install:

1. Copy the script to the clipboad
2. Go to the Greasemonkey user scripts in the Firefox addons.
3. Click "New user script".
4. On the next dialog, click "Use Script from clipboard".
5. Click "Save" to save the script.

// ==UserScript==
// @name        MobileRead Kobo Price Check
// @namespace   http://dunck.us/code/greasemonkey
// @description Checks price of Kindle ebook links in MobileRead forum posts.
// @include     https://www.mobileread.com/forums/show*.php*
// @version     1
// @grant       GM_xmlhttpRequest
// @grant       GM_log
// ==/UserScript==
// https://store.kobobooks.com/en-GB/ebook/summoner-book-0-origins-the-prequel
var site_regex = /^(http|https):\/\/store.kobobooks.com\/.*\/*ebook\/.*/;
var ebook_url_regexs = [
  /^\/dp\//,
  /^\/[^\/]+\/dp\//,
  /^\/gp\/product\//
];
var check_price = function (element, url) {
  var xhr = GM_xmlhttpRequest({
    method: 'GET',
    url: url,
    onload: function (response) {
      var price = '';
      var color = 'blue';
      var data = response.responseText;
      var pos0 = data.indexOf('class="right inline-price"');
      if (pos0 > 1) {
        var pos1 = data.indexOf('>', pos0);
        var pos2 = data.indexOf('<', pos1);
        price = data.substring(pos1 + 1, pos2).trim();
      } 
      else if (data.indexOf('>Free eBook<') > 0) {
        price = 'Free';
        color = 'red'
      } 
      else if (data.indexOf('view-in-library') > 0) {
        price = 'already own';
        color = 'red'
      }
      if (price == '') {
        price = 'N/A';
      }
      if (color == '') {
        var color = price == '$0.00' || price == '£0.00' ? 'red' : 'blue';
      }
      element.insertAdjacentHTML('afterend', ' <span style="color:' + color + '">(' + price + ')</span>');
    }
  });
}
var a = document.getElementsByTagName('a');
for (var i = 0; i < a.length; i++) {
  var url = a[i].href;
  var parts = site_regex.exec(url);
  if (parts) {
    check_price(a[i], url);
  }
}

[Dr. Drib]

Moved OUT of the Deals and Freebies forum, and INTO the Kobo Forum.


Don
(Moderator)

[DNSB]

Seems to work here so when a link such as the ones below appear, the price is autofetched (assuming GreaseMonkey and the scripts are installed and enabled )

https://store.kobobooks.com/en-ca/eb...mmers-volume-1

http://www.amazon.ca/Complete-Hammer...r%27s+slammers

[davidfor]

Originally Posted by DNSB

Seems to work here so when a link such as the ones below appear, the price is autofetched (assuming GreaseMonkey and the scripts are installed and enabled )

Glad to hear it works on the other side of the world. Hopefully it will work in the middle as well.

[ottdmk]

The Kobo one works for me. The Kindle one does not. Strange.

[PeterT]

The Kindle one seems to have gone through multiple revisions. I ended up using one of the ones found at http://userscripts-mirror.org/users/476972/scripts

[gbm]

Originally Posted by ottdmk

The Kobo one works for me. The Kindle one does not. Strange.

This one will work for you in Canada.

// ==UserScript==
// @name        MobileRead Kindle Price Check (amazon.ca)
// @namespace   kakapo.public
// @description Checks price of Kindle ebook links in MobileRead forum posts. Translates amazon.com links into your local site, please install the correct version.
// @include     https://www.mobileread.com/forums/showthread.php*
// @version     3
// @grant       GM_xmlhttpRequest
// ==/UserScript==
var site_regex = /^(http|https):\/\/(www\.)?amazon\.(ca)(\/.*)/;
var migrate_regex = false;
var migrate_replacement = '';
var currency_prefix = 'CDN$ ';
var ebook_url_regexs = [
  /^\/dp\//,
  /^\/[^\/]+\/dp\//,
  /^\/gp\/product\//,
  /^\/exec\/obidos\/ASIN\//
];
var check_price = function (elements, url) {
  var xhr = GM_xmlhttpRequest({
    method: 'GET',
    url: url,
    onload: function (response) {
      var data = response.responseText;
      var pos0 = data.indexOf('class="priceLarge"');
      var pos1 = data.indexOf('>', pos0);
      var pos2 = data.indexOf('<', pos1);
      var price = data.substring(pos1 + 1, pos2).trim();
      if (price == '') {
        price = 'N/A';
      }
      var color = price == 'Free' || price == currency_prefix + '0.00' || price == currency_prefix + '0,00' || price == currency_prefix + '0' ? 'red' : 'blue';
      pos0 = data.indexOf('class="iou_cust"');
      if (pos0 >= 0) {
        price += ' already own';
      }
      for (var i = 0; i < elements.length; i++) {
        elements[i].insertAdjacentHTML('afterend', ' <span style="color:' + color + '">(' + price + ')</span>');
      }
    }
  });
}
var a = document.getElementsByTagName('a');
var to_check = {
};
for (var i = 0; i < a.length; i++) {
  var url = a[i].href;
  var parts = site_regex.exec(url);
  if (parts) {
    if (migrate_regex) {
      url = url.replace(migrate_regex, migrate_replacement);
      a[i].href = url;
    }
    for (var j = 0; j < ebook_url_regexs.length; j++) {
      if (ebook_url_regexs[j].test(parts[parts.length - 1])) {
        if (!to_check[url]) {
          to_check[url] = [
          ];
        }
        to_check[url].push(a[i]);
      }
    }
  }
}
for (var k in to_check) {
  check_price(to_check[k], k);
}

[DNSB]

Originally Posted by gbm

This one will work for you in Canada.

I'd suggest this one instead. The one you posted will show prices on Amazon.ca if the link is to amazon.ca. The version I prefer converts .com to .ca which gives me results from the vast majority of Amazon links.

This is the one from the link posted by PeterT.

// ==UserScript==
// @name        MobileRead Kindle Price Check (amazon.ca)
// @namespace   kakapo.public
// @description Checks price of Kindle ebook links in MobileRead forum posts. Translates amazon.com links into your local site, please install the correct version.
// @include     https://www.mobileread.com/forums/showthread.php*
// @version     3
// @grant       GM_xmlhttpRequest
// ==/UserScript==

var site_regex = /^(http|https):\/\/(www\.)?amazon\.(com|ca)(\/.*)/;
var migrate_regex = /amazon\.com/;
var migrate_replacement = 'amazon.ca';
var currency_prefix = 'CDN$ ';

var ebook_url_regexs = [
  /^\/dp\//,
  /^\/[^\/]+\/dp\//,
  /^\/gp\/product\//,
  /^\/exec\/obidos\/ASIN\//
];

var check_price = function(elements, url) {
  var xhr = GM_xmlhttpRequest({
    method: 'GET',
    url: url,
    onload: function(response) {
      var data = response.responseText;
      var pos0 = data.indexOf('class="priceLarge"');
      var pos1 = data.indexOf('>', pos0);
      var pos2 = data.indexOf('<', pos1);
      var price = data.substring(pos1 + 1, pos2).trim();
      if (price == '') {
        price = 'N/A';
      }
      var color = price == 'Free' || price == currency_prefix+'0.00' || price == currency_prefix+'0,00' || price == currency_prefix+'0' ? 'red' : 'blue';
      pos0 = data.indexOf('class="iou_cust"');
      if (pos0 >= 0) {
        price += ' already own';
      }
      for (var i = 0; i < elements.length; i++) {
	elements[i].insertAdjacentHTML('afterend', ' <span style="color:'+color+'">('+price+')</span>');
      }
    }
  });
}

var a = document.getElementsByTagName('a');
var to_check = {};
for (var i = 0; i < a.length; i++) {
  var url = a[i].href;
  var parts = site_regex.exec(url);
  if (parts) {
    if (migrate_regex) {
      url = url.replace(migrate_regex, migrate_replacement);
      a[i].href = url;
    } 
    for (var j = 0; j < ebook_url_regexs.length; j++)  {
      if (ebook_url_regexs[j].test(parts[parts.length-1])) {
        if (!to_check[url]) {
          to_check[url] = [];
        }
        to_check[url].push(a[i]);
      }
    }
  }
}

for (var k in to_check) {
  check_price(to_check[k], k);
}

[ottdmk]

Thanks DNSB & PeterT, that script works. Fun funtionality... sometimes GreaseMonkey is worth it. :-D

[gbm]

Originally Posted by davidfor

Firstly, this is shamelessy stolen from GreaseMonkey script to check Kindle prices in this forum.

Below is a Greasemonkey script for checking prices of books in the Kobo store. This looks at the link posted and adds the price after the link. If you are logged into you Kobo account, it will also show whether you already own the book.

I have been using this for a while and it works well. But, I mainly use the Australian shop. As far as I can tell, they are all the same, but there might be some differences. If you have any problems, please report them here and I will have a look at it.

To install:

1. Copy the script to the clipboad
2. Go to the Greasemonkey user scripts in the Firefox addons.
3. Click "New user script".
4. On the next dialog, click "Use Script from clipboard".
5. Click "Save" to save the script.

I have updated this script to work with the US Kobo ebookstore due to website changes.

I have not checked if it works with you library YMMV

// ==UserScript==
// @name        MobileRead Kobo Price Check
// @namespace   http://dunck.us/code/greasemonkey
// @description Checks price of Kobo US ebook links in MobileRead forum posts.
// @include     (http|https)://www.mobileread.com/forums/show*.php*
// @version     1
// @grant       GM_xmlhttpRequest
// @grant       GM_log
// ==/UserScript==
// https://www.kobo.com/us/en/ebook/summoner-book-0-origins-the-prequel
var site_regex = /^(http|https):\/\/www.kobo.com\/.*\/*ebook\/.*/;
var ebook_url_regexs = [
  /^\/dp\//,
  /^\/[^\/]+\/dp\//,
  /^\/gp\/product\//
];
var check_price = function (element, url) {
  var xhr = GM_xmlhttpRequest({
    method: 'GET',
    url: url,
    onload: function (response) {
      var price = '';
      var color = 'blue';
      var data = response.responseText;
      var pos0 = data.indexOf('span class="price"  translate=no');
      if (pos0 > 1) {
        var pos1 = data.indexOf('>', pos0);
        var pos2 = data.indexOf('<', pos1);
        price = data.substring(pos1 + 1, pos2).trim();
      } 
      else if (data.indexOf('>Free eBook<') > 0) {
        price = 'Free';
        color = 'red'
      } 
      else if (data.indexOf('view-in-library') > 0) {
        price = 'already own';
        color = 'red'
      }
      if (price == '') {
        price = 'N/A';
      }
      if (color == '') {
        var color = price == '$0.00' || price == '£0.00' ? 'red' : 'blue';
      }
      element.insertAdjacentHTML('afterend', ' <span style="color:' + color + '">(' + price + ')</span>');
    }
  });
}
var a = document.getElementsByTagName('a');
for (var i = 0; i < a.length; i++) {
  var url = a[i].href;
  var parts = site_regex.exec(url);
  if (parts) {
    check_price(a[i], url);
  }
}

bernie

[JSWolf]

Test link...

https://www.kobo.com/us/en/ebook/the...mmers-volume-1

It works here but not for post #3. I tested it in the free/bargain SF thread and it works there.

Thanks for the Kobo price checker script.

[DNSB]

Originally Posted by JSWolf

Test link...

https://www.kobo.com/us/en/ebook/the...mmers-volume-1

It works here but not for post #3. I tested it in the free/bargain SF thread and it works there.

Thanks for the Kobo price checker script.

The link to the Kobo store in post #3 points to:

https://store.kobobooks.com/en-ca/ebook/

while the link in your message points to:

https://www.kobo.com/us/en/ebook/

[gbm]

Originally Posted by DNSB

The link to the Kobo store in post #3 points to:

https://store.kobobooks.com/en-ca/ebook/

while the link in your message points to:

https://www.kobo.com/us/en/ebook/

I did say if was for the Kobo US store and website changes, it still needs a little tweaking but mostly working.

bernie

[DNSB]

Originally Posted by gbm

I did say if was for the Kobo US store and website changes, it still needs a little tweaking but mostly working.

bernie

If I go to the English Canadian store, the only visible change is /us/ becomes /ca/ in the URL. The kobobooks URL in post #3 is an old one which is what I was attempting to point out. It would take bit more work to convert the old URL to work with the new store.