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Discogs importer: use mblinks lib

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Behavior changed slightly:
- cached entries are now refreshed after a week (tune-able)
- icons are now specific to types (release, release-group)
This commit is contained in:
Laurent Monin 2015-06-05 22:17:24 +02:00
parent f19d8a0b0a
commit 6d778043fc
1 changed files with 6 additions and 66 deletions
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72
discogs_importer.user.js
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@ -13,6 +13,7 @@
// @require https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js
// @require lib/import_functions.js
// @require lib/logger.js
// @require lib/mblinks.js
// ==/UserScript==
////////////////////////////////////////////////////////////////////////////////////////////////////////
@ -22,15 +23,14 @@
* - http://www.discogs.com/release/1566223 : Artist credit of tracks contains an ending ',' join phrase
*/
$(document).ready(function(){
var mblinks = new MBLinks('DISCOGS_MBLINKS_CACHE', 7*24*60); // force refresh of cached links once a week
initCache();
$(document).ready(function(){
// Feature #1: Normalize Discogs links on current page by removing title from URL
magnifyLinks();
// Feature #2: Display links of equivalent MusicBrainz entities for masters and releases
initAjaxEngine();
insertMBLinks();
// Handle page navigation on artist page for the first two features
@ -71,39 +71,6 @@ $(document).ready(function(){
// Display links of equivalent MusicBrainz entities for masters and releases //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Ajax engine to throttle requests to MusicBrainz
var ajax_requests = [];
function initAjaxEngine() {
setInterval(function() {
if(ajax_requests.length > 0) {
var request = ajax_requests.shift();
if(typeof request === "function") {
request();
}
}
}, 1000);
}
// Cache for Discogs to MB mapping
var DISCOGS_MB_MAPPING_CACHE = {};
function initCache() {
// Check if we already added links for this content
var CACHE_STRING = localStorage.getItem('DISCOGS_MB_MAPPING_CACHE');
if(!CACHE_STRING) {
CACHE_STRING = "{}";
}
DISCOGS_MB_MAPPING_CACHE = JSON.parse(CACHE_STRING);
}
function saveCACHE() {
localStorage.setItem('DISCOGS_MB_MAPPING_CACHE', JSON.stringify(DISCOGS_MB_MAPPING_CACHE));
}
function createMusicBrainzLink(mb_url) {
return '<a href="'+mb_url+'"><img src="http://musicbrainz.org/favicon.ico" /></a> ';
}
// Insert MusicBrainz links in a section of the page
function insertMBLinks($root) {
@ -111,7 +78,7 @@ function insertMBLinks($root) {
$tr.find('a[href*="http://www.discogs.com/'+discogs_type+'/"]').each(function() {
var $link = $(this);
var discogs_url = $link.attr('href');
searchAndDisplayMbLink(discogs_url, mb_type, $link);
mblinks.searchAndDisplayMbLink(discogs_url, mb_type, function (link) { $link.before(link); });
});
}
@ -133,33 +100,6 @@ function insertMBLinks($root) {
}
// Ask MusicBrainz if the provided Discogs URL is linked to MusicBrainz entities (release-group or release)
// and then create links to these MB entities inside the provided DOM container
function searchAndDisplayMbLink(discogs_url, mb_type, link_container) {
if(DISCOGS_MB_MAPPING_CACHE[discogs_url]) {
$.each(DISCOGS_MB_MAPPING_CACHE[discogs_url], function(idx, mb_url) {
link_container.before(createMusicBrainzLink(mb_url));
});
} else {
ajax_requests.push($.proxy(function() {
var context = this;
$.getJSON('http://musicbrainz.org/ws/2/url?resource='+context.discogs_url+'&inc='+context.mb_type+'-rels', function(data) {
if ('relations' in data) {
DISCOGS_MB_MAPPING_CACHE[context.discogs_url] = [];
$.each(data['relations'], function(idx, relation) {
if (context.mb_type.replace('-', '_') in relation) {
var mb_url = 'http://musicbrainz.org/'+context.mb_type+'/' + relation[context.mb_type.replace('-', '_')]['id'];
DISCOGS_MB_MAPPING_CACHE[context.discogs_url].push(mb_url);
saveCACHE();
context.$link.before(createMusicBrainzLink(mb_url));
}
});
}
});
}, {'discogs_url': discogs_url, '$link': link_container, 'mb_type': mb_type}));
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Normalize Discogs URLs in a DOM tree //
@ -230,8 +170,8 @@ function insertLink(release) {
prevNode.before(mbUI);
// Find MB release(s) linked to this Discogs release
var mbLinkContainer = $("div.section.musicbrainz div.section_content span");
searchAndDisplayMbLink(magnifyLink(window.location.href), 'release', mbLinkContainer);
var mbLinkInsert = function (link) { $("div.section.musicbrainz div.section_content span").before(link); }
mblinks.searchAndDisplayMbLink(magnifyLink(window.location.href), 'release', mbLinkInsert);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////