mirror of
https://github.com/murdos/musicbrainz-userscripts
synced 2024-09-20 14:02:01 +00:00
186 lines
7.4 KiB
JavaScript
186 lines
7.4 KiB
JavaScript
// ==UserScript==
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// @name Import Discogs releases to MusicBrainz
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// @namespace http://userscripts.org/users/22504
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// @include http://*.discogs.com/*release/*
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// ==/UserScript==
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// Script Update Checker
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// -- http://userscripts.org/scripts/show/20145
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var version_scriptNum = 36376; // Change this to the number given to the script by userscripts.org (check the address bar)
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var version_timestamp = 1263489365220; // Used to differentiate one version of the script from an older one. Use the Date.getTime() function to get a value for this.
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try {
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function updateCheck(forced) {if((forced)||(parseInt(GM_getValue("lastUpdate", "0")) + 86400000 <= (new Date().getTime()))) {try {GM_xmlhttpRequest({method: "GET",url: "http://userscripts.org/scripts/review/" + version_scriptNum + "?" + new Date().getTime(),headers: {'Cache-Control': 'no-cache'},onload: function(xhrResponse) {GM_setValue("lastUpdate", new Date().getTime() + ""); var rt = xhrResponse.responseText.replace(/ ?/gm, " ").replace(/<li>/gm, "\n").replace(/<[^>]*>/gm, ""); var scriptName = (/@name\s*(.*?)\s*$/m.exec(rt))[1]; GM_setValue("targetScriptName", scriptName); if (parseInt(/version_timestamp\s*=\s*([0-9]+)/.exec(rt)[1]) > version_timestamp) {if (confirm("There is an update available for the Greasemonkey script \"" + scriptName + ".\"\nWould you like to go to the install page now?")) {GM_openInTab("http://userscripts.org/scripts/show/" + version_scriptNum);}} else if (forced) {alert("No update is available for \"" + scriptName + ".\"");}}});} catch (err) {if (forced) {alert("An error occurred while checking for updates:\n" + err);}}}} GM_registerMenuCommand(GM_getValue("targetScriptName", "???") + " - Manual Update Check", function() {updateCheck(true);}); updateCheck(false);
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} catch(e) {}
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// Discogs API KEY (you may need to add yours if you encounter limit issues)
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var discogsApiKey = "84b3bec008";
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// Discogs Webservice URL
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var discogsWsUrl = window.location.href.replace(/http:\/\/(www\.|)discogs\.com\/(.*\/|)release\//, 'http://discogs.com/release/') + "?f=xml&api_key=" + discogsApiKey;
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console.log(discogsWsUrl);
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// Grabs information from Discogs
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GM_xmlhttpRequest({
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method:"GET",
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url:discogsWsUrl,
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headers:{
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"User-Agent":"monkeyagent",
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"Accept":"text/monkey,text/xml",
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},
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onload:function(response) {
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var xmldoc = new DOMParser().parseFromString(response.responseText,"text/xml");
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var releases = parseReleases(xmldoc);
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insertLinks(releases);
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}
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});
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/*
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var xmlhttp = new XMLHttpRequest();
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xmlhttp.onreadystatechange = function() { var releases = parseReleases(xmlhttp.responseXML); insertLinks(releases);};
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xmlhttp.open("GET", url, true);
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xmlhttp.send(null);
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*/
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// Analyze Discogs data and cook the import URL
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function parseReleases(xmldoc) {
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var releases = [];
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var xpathExpr, resultNodes;
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// Compute artist(s) name(s)
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var releaseArtist = "";
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xpathExpr = "//release/artists/artist/*[name()='name' or name()='join']";
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resultNodes = xmldoc.evaluate(xpathExpr, xmldoc, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
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releaseArtist = cookArtistName(resultNodes);
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// Grab release title
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var releaseTitle;
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xpathExpr = "//release/title";
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releaseTitle = xmldoc.evaluate(xpathExpr, xmldoc, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.textContent;
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// Grab tracks
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var tracks = [];
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xpathExpr = "//tracklist/track";
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resultNodes = xmldoc.evaluate(xpathExpr, xmldoc, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
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for (var i = 0; i < resultNodes.snapshotLength; i++) {
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var track = new Object();
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var trackNode = resultNodes.snapshotItem(i);
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track.title = trackNode.getElementsByTagName("title").item(0).textContent;
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track.duration = trackNode.getElementsByTagName("duration").item(0).textContent;
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// Track artist
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var trackArtist;
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xpathExpr = ".//artists//*[name()='name' or name()='join']";
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trackArtist = cookArtistName(xmldoc.evaluate(xpathExpr, trackNode, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null));
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if (trackArtist != "")
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track.artist = trackArtist;
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// Track position and release number
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var trackPosition = trackNode.getElementsByTagName("position").item(0).textContent;
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var releaseNumber = 1;
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// Multi discs e.g. 1.1 or 1-1
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var tmp = trackPosition.match(/^(\d)(?=(-|\.)\d*)/);
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if (tmp && tmp[0]) {
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releaseNumber = tmp[0];
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} else {
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// Vinyls disc numbering: A1, B3, ...
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tmp = trackPosition.match(/^([A-Za-z])\d*/);
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if (tmp && tmp[0]) {
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var code = tmp[0].charCodeAt(0)-65;
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releaseNumber = (code-code%2)/2+1;
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}
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}
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// Create release if needed
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if( !releases[releaseNumber-1] ) {
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releases.push(new Object());
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releases[releaseNumber-1].tracks = [];
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}
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// Trackposition is empty e.g. for release title
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if (trackPosition != "" && trackPosition != null)
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releases[releaseNumber-1].tracks.push(track);
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}
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// Fill releases info
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for (var i=0; i < releases.length; i++) {
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releases[i].artist = releaseArtist;
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releases[i].title = releaseTitle;
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if (releases.length > 1)
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releases[i].title += " (disc "+ (i+1) +")";
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}
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console.log(releases);
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return releases;
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}
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// Insert links in Discogs page
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function insertLinks(releases) {
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var mbUI = document.createElement('div');
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mbUI.innerHTML = "<h3>MusicBrainz</h3>";
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mbUI.className = "section";
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var mbContentBlock = document.createElement('div');
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mbContentBlock.className = "section_content";
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mbUI.appendChild(mbContentBlock);
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var innerHTML = '';
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if (releases.length == 1) {
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innerHTML += '<div><a target="_blank" href="' + cookImportUrl(releases[0]) + '">Import release</a></div>';
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} else {
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for (var i=0; i < releases.length; i++) {
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innerHTML += '<div><a target="_blank" href="' + cookImportUrl(releases[i]) + '">Import disc ' + (i+1) + '</a></div>';
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}
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}
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mbContentBlock.innerHTML = innerHTML;
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var prevNode = document.body.querySelector("div.section.ratings");
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prevNode.parentNode.insertBefore(mbUI, prevNode);
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}
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// Helper function: compute artist name from a XPATH resultNodes
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function cookArtistName(nodes) {
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var artistName = "";
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for (var i = 0; i < nodes.snapshotLength; i++) {
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artistName += (i == 0 ? "" : " ") + nodes.snapshotItem(i).textContent;
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}
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return artistName;
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}
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// Helper function: compute url for a release object
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function cookImportUrl(release) {
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var importURL = "http://musicbrainz.org/cdi/enter.html?&artistname=" + encodeURIComponent(release.artist) + "&releasename=" + encodeURIComponent(release.title);
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// Multiple artists on tracks?
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var artists = [];
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for (var i=0; i < release.tracks.length; i++) {
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if (release.tracks[i].artist)
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artists.push(release.tracks[i].artist);
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}
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if (artists.length > 1)
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importURL += "&hasmultipletrackartists=1&artistid=1";
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else
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importURL += "&hasmultipletrackartists=0&artistid=2";
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// Add tracks
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for (var i=0; i < release.tracks.length; i++) {
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importURL += "&track" + i + "=" + encodeURIComponent(release.tracks[i].title);
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importURL += "&tracklength" + i + "=" + encodeURIComponent(release.tracks[i].duration);
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if (artists.length > 1 && release.tracks[i].artist) {
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importURL += "&tr" + i + "_artistedit=1";
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importURL += "&tr" + i + "_artistname=" + encodeURIComponent(release.tracks[i].artist);
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}
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}
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importURL += '&tracks=' + release.tracks.length;
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return importURL;
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}
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