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[discogs] Code clean-up

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This commit is contained in:
Aurélien Mino 2013-12-31 19:21:47 +01:00
parent a5de573acc
commit 66dfc41313
1 changed files with 119 additions and 116 deletions
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235
discogs_importer.user.js
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@ -1,14 +1,11 @@
// ==UserScript==
// @name Import Discogs releases to MusicBrainz
// @version 2013.12.03.1
// @version 2013.12.31.1
// @namespace http://userscripts.org/users/22504
// @icon http://www.discogs.com/images/discogs130.png
// @downloadURL https://raw.github.com/murdos/musicbrainz-userscripts/master/discogs_importer.user.js
// @updateURL https://raw.github.com/murdos/musicbrainz-userscripts/master/discogs_importer.user.js
// @include http://*musicbrainz.org/release/add
// @include http://*musicbrainz.org/release/*/add
// @include http://*musicbrainz.org/release/*/edit
// @include http://www.discogs.com/*
// @include http://*.discogs.com/*release/*
// @exclude http://*.discogs.com/*release/*?f=xml*
@ -23,78 +20,64 @@ if (!unsafeWindow) unsafeWindow = window;
$(document).ready(function(){
// On Musicbrainz website
if (window.location.href.match(/(musicbrainz\.org)/)) {
initCache();
$add_disc_dialog = $('div.add-disc-dialog');
//$add_disc_dialog.find('div.tabs ul.tabs').append('<li><a class="discogs" href="#discogs">Discogs import</a></li>');
// Feature #1: Normalize Discogs links on current page by removing title from URL
magnifyLinks();
var innerHTML = '<div class="add-disc-tab discogs" style="display: none">';
innerHTML += '<p>Use the following fields to search for a Discogs release.</p>';
innerHTML += '<div class="pager" style="width: 100%; text-align: right; display: none;"><a href="#prev">&lt;&lt;</a><span class="pager"></span><a href="#next">&gt;&gt;</a></div>';
innerHTML += '<div style="display: none;" class="tracklist-searching import-message"><p><img src="/static/images/icons/loading.gif" />&nbsp;Searching...</p></div>';
innerHTML += '<div style="display: none;" class="tracklist-no-results import-message"><p>No results</p></div>';
innerHTML += '<div style="display: none;" class="tracklist-error import-message"><p>An error occured: <span class="message"> </span></p></div></div>';
//$add_disc_dialog.find('div.add-disc-tab:last').after(innerHTML);
// Feature #2: Display links of equivalent MusicBrainz entities for masters and releases
initAjaxEngine();
insertMBLinks();
// On Discogs website
} else {
// Handle page navigation on artist page for the first two features
$("#releases").bind("DOMNodeInserted",function(event) {
// Only child of $("#releases") are of interest
if (event.target.parentNode.id == 'releases') {
magnifyLinks(event.target);
insertMBLinks($(event.target));
}
});
initAjaxEngine();
magnifyLinks();
insertMBLinks();
// Feature #3: Add an import button in a new section in sidebar, if we're on a release page?
if (window.location.href.match( /discogs\.com\/(.*\/?)release\/(\d+)$/) ) {
// Handle page navigation on artist page
$("#releases").bind("DOMNodeInserted",function(event) {
// Only child of $("#releases") are of interest
if (event.target.parentNode.id == 'releases') {
magnifyLinks(event.target);
insertMBLinks($(event.target));
}
// Discogs Webservice URL
var discogsReleaseId = window.location.href.match( /discogs\.com\/(.*\/?)release\/(\d+)$/)[2];
var discogsWsUrl = 'http://api.discogs.com/releases/' + discogsReleaseId;
// Swith JQuery to MB's one, and save GreaseMonkey one
var GM_JQuery = $;
$ = unsafeWindow.$;
$.ajax({
url: discogsWsUrl,
dataType: 'jsonp',
headers: { 'Accept-Encoding': 'gzip', 'User-Agent': 'MBDiscosgImporter/0.1 +http://userscripts.org/scripts/show/36376' },
crossDomain: true,
success: function (data, textStatus, jqXHR) {
//mylog(data);
var release = parseDiscogsRelease(data);
insertLink(release);
},
error: function(jqXHR, textStatus, errorThrown) {
mylog("AJAX Status:" + textStatus);
mylog("AJAX error thrown:" + errorThrown);
}
});
// Release page?
if (window.location.href.match( /discogs\.com\/(.*\/?)release\/(\d+)$/) ) {
// Discogs Webservice URL
var discogsReleaseId = window.location.href.match( /discogs\.com\/(.*\/?)release\/(\d+)$/)[2];
var discogsWsUrl = 'http://api.discogs.com/releases/' + discogsReleaseId;
// Swith JQuery to MB's one, and save GreaseMonkey one
var GM_JQuery = $;
$ = unsafeWindow.$;
$.ajax({
url: discogsWsUrl,
dataType: 'jsonp',
headers: { 'Accept-Encoding': 'gzip', 'User-Agent': 'MBDiscosgImporter/0.1 +http://userscripts.org/scripts/show/36376' },
crossDomain: true,
success: function (data, textStatus, jqXHR) {
//mylog(data);
var release = parseDiscogsRelease(data);
insertLink(release);
},
error: function(jqXHR, textStatus, errorThrown) {
mylog("AJAX Status:" + textStatus);
mylog("AJAX error thrown:" + errorThrown);
}
});
// Back to GreaseMonkey's JQuery
$ = GM_JQuery;
}
// Back to GreaseMonkey's JQuery
$ = GM_JQuery;
}
});
var CACHE = {};
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Display links of equivalent MusicBrainz entities for masters and releases //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Ajax engine to throttle requests to MusicBrainz
var ajax_requests = [];
function initAjaxEngine() {
initCache();
setInterval(function() {
if(ajax_requests.length > 0) {
var request = ajax_requests.shift();
@ -103,35 +86,36 @@ function initAjaxEngine() {
}
}
}, 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 = "{}";
}
CACHE = JSON.parse(CACHE_STRING);
DISCOGS_MB_MAPPING_CACHE = JSON.parse(CACHE_STRING);
}
function saveCACHE() {
localStorage.setItem('DISCOGS_MB_MAPPING_CACHE', JSON.stringify(CACHE));
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($root) {
function searcAndDisplayMbLinkInSection($tr, mb_type, discogs_type) {
function searchAndDisplayMbLinkInSection($tr, mb_type, discogs_type) {
$tr.find('a[href*="http://www.discogs.com/'+discogs_type+'/"]').each(function() {
var $link = $(this);
var discogs_url = $link.attr('href');
searcAndDisplayMbLink(discogs_url, mb_type, $link)
searchAndDisplayMbLink(discogs_url, mb_type, $link);
});
}
@ -140,23 +124,25 @@ function insertMBLinks($root) {
}
$root.find('tr.master').each(function() {
searcAndDisplayMbLinkInSection($(this), 'release-group', 'master');
searchAndDisplayMbLinkInSection($(this), 'release-group', 'master');
});
$root.find('tr.release').each(function() {
searcAndDisplayMbLinkInSection($(this), 'release', 'release');
searchAndDisplayMbLinkInSection($(this), 'release', 'release');
});
$root.find('tr.hidden.r_tr').each(function() {
searcAndDisplayMbLinkInSection($(this), 'release', 'release');
searchAndDisplayMbLinkInSection($(this), 'release', 'release');
});
}
function searcAndDisplayMbLink(discogs_url, mb_type, link_container) {
// 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(CACHE[discogs_url]) {
$.each(CACHE[discogs_url], function(idx, mb_url) {
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 {
@ -164,11 +150,11 @@ function searcAndDisplayMbLink(discogs_url, mb_type, link_container) {
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) {
CACHE[context.discogs_url] = [];
DISCOGS_MB_MAPPING_CACHE[context.discogs_url] = [];
$.each(data['relations'], function(idx, relation) {
if (context.mb_type.replace('-', '_') in relation) {
var mb_url = 'http://musicbrainz.org/'+context.mb_type+'/' + relation[context.mb_type.replace('-', '_')]['id'];
CACHE[context.discogs_url].push(mb_url);
DISCOGS_MB_MAPPING_CACHE[context.discogs_url].push(mb_url);
saveCACHE();
context.$link.before(createMusicBrainzLink(mb_url));
}
@ -179,6 +165,11 @@ function searcAndDisplayMbLink(discogs_url, mb_type, link_container) {
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Normalize Discogs URLs in a DOM tree //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Normalize Discogs URLs in a DOM tree
function magnifyLinks(rootNode) {
if (!rootNode) {
@ -197,23 +188,60 @@ function magnifyLinks(rootNode) {
var elem = elems[i];
// Ignore empty links
if (!elem.href || trim(elem.textContent) == '' || elem.textContent.substring(4,0) == 'http')
if (!elem.href || $.trim(elem.textContent) == '' || elem.textContent.substring(4,0) == 'http')
continue;
//~ // Check if the link matches
if (m = re.exec(elem.href)) {
var type = m[2];
var id = m[3];
elem.href = "http://www.discogs.com/" + type + "/" + id;
}
elem.href = magnifyLink(elem.href);
}
}
// Remove whitespace in the beginning and end
function trim(str) {
return str.replace(/^\s+/, '').replace(/\s+$/, '');
// Normalize Discogs URL by removing title from URL
function magnifyLink(url) {
var re = /^http:\/\/www\.discogs\.com\/(.*)\/(master|release)\/(\d+)$/i;
if (m = re.exec(url)) {
var type = m[2];
var id = m[3];
return "http://www.discogs.com/" + type + "/" + id;
}
return url;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Insert MusicBrainz section into Discogs page //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Insert links in Discogs page
function insertLink(release) {
var mbUI = $('<div class="section musicbrainz"><h3>MusicBrainz</h3></div>');
var mbContentBlock = $('<div class="section_content"></div>');
mbUI.append(mbContentBlock);
// Form parameters
var edit_note = 'Imported from ' + window.location.href.replace(/http:\/\/(www\.|)discogs\.com\/(.*\/|)release\//, 'http://www.discogs.com/release/');
var parameters = MBReleaseImportHelper.buildFormParameters(release, edit_note);
// Build form
var innerHTML = "MusicBrainz release(s) linked to this release: <span></span><br /><br />";
innerHTML += MBReleaseImportHelper.buildFormHTML(parameters);
// Append search link
innerHTML += ' <small>(' + MBReleaseImportHelper.buildSearchLink(release) + ')</small>';
mbContentBlock.html(innerHTML);
var prevNode = $("div.section.social");
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);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Parsing of Discogs data //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Analyze Discogs data and return a release object
function parseDiscogsRelease(data) {
@ -404,33 +432,6 @@ function parseDiscogsRelease(data) {
return release;
}
// Insert links in Discogs page
function insertLink(release) {
var mbUI = $('<div class="section musicbrainz"><h3>MusicBrainz</h3></div>');
var mbContentBlock = $('<div class="section_content"></div>');
mbUI.append(mbContentBlock);
// Form parameters
var edit_note = 'Imported from ' + window.location.href.replace(/http:\/\/(www\.|)discogs\.com\/(.*\/|)release\//, 'http://www.discogs.com/release/');
var parameters = MBReleaseImportHelper.buildFormParameters(release, edit_note);
// Build form
var innerHTML = "MusicBrainz release(s) linked to this release: <span></span><br /><br />";
innerHTML += MBReleaseImportHelper.buildFormHTML(parameters);
// Append search link
innerHTML += ' <small>(' + MBReleaseImportHelper.buildSearchLink(release) + ')</small>';
mbContentBlock.html(innerHTML);
var prevNode = $("div.section.social");
prevNode.before(mbUI);
// Find MB release(s) linked to this Discogs release
var mbLinkContainer = $("div.section.musicbrainz div.section_content span");
searcAndDisplayMbLink(window.location.href, 'release', mbLinkContainer);
}
function decodeDiscogsJoinphrase(join) {
var joinphrase = "";
var trimedjoin = join.replace(/^\s*/, "").replace(/\s*$/, "");
@ -448,7 +449,9 @@ function mylog(obj) {
}
}
// Reference Discogs <-> MusicBrainz map
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Discogs -> MusicBrainz mapping //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
var MediaTypes = new Array();
MediaTypes["8-Track Cartridge"] = "Cartridge";