///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                          MusicBrainz Import helper functions
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/*
* How to use this module?
*
* - First build a release object (see expected format below) that you'll fill in from source of data
* - Call as follows, e.g.:
*     var parameters = MBReleaseImportHelper.buildFormParameters(parsedRelease, optionalEditNote);
* - Then build the HTML that you'll inject into source site page:
*     var formHtml = MBReleaseImportHelper.buildFormHTML(parameters);
* - Addinionally, you can inject a search link to verify that the release is not already known by MusicBrainz:
*     var linkHtml = MBReleaseImportHelper.buildSearchLink(parsedRelease);
*
* Expected format of release object:
*
*     release = {
*         title,
*         artist_credit,
*         type,
*         status,
*         language,
*         script,
*         packaging,
*         country,
*         year,
*         month,
*         day,
*         labels = [ { name, mbid, catno }, ... ],
*         barcode,
*         urls = [ {url, link_type }, ... ],
*         discs = [
*             {
*                 title,
*                 format,
*                 tracks = [
*                     { number, title, duration, artist_credit },
*                     ...
*                 ]
*             },
*             ...
*         ],
*     }
*
*     where 'artist_credit' has the following format:
*
*     artist_credit = [
*         {
*             credited_name,
*             artist_name,
*             artist_mbid,
*             joinphrase
*         },
*         ...
*     ]
*
*/
var MBReleaseImportHelper = (function() {
// --------------------------------------- publics ----------------------------------------- //
// compute HTML of search link
function fnBuildSearchLink(release) {
var totaltracks = 0;
for (var i=0; i < release.discs.length; i++) {
totaltracks += release.discs[i].tracks.length;
}
var release_artist = "";
for (var i=0; i < release.artist_credit.length; i++) {
var ac = release.artist_credit[i];
release_artist += ac.artist_name;
if (typeof ac.joinphrase != 'undefined' && ac.joinphrase != "") {
release_artist += ac.joinphrase;
} else {
if (i != release.artist_credit.length-1) release_artist += ", ";
}
}
var innerHTML = '<a href="http://musicbrainz.org/search?query=artist%3A(' + luceneEscape(release_artist) + ')%20release%3A(' + luceneEscape(release.title) + ')%20tracks%3A(' + totaltracks + ')';
if(release.country) innerHTML += '%20country:'+release.country;
innerHTML += '&type=release&advanced=1">Search in MusicBrainz</a>';
return innerHTML;
}
// compute HTML of import form
function fnBuildFormHTML(parameters) {
// Build form
var innerHTML = '<form action="http://musicbrainz.org/release/add" method="post" target="_blank" accept-charset="UTF-8" charset="' + document.characterSet + '">';
parameters.forEach(function(parameter) {
var value = parameter.value + "";
innerHTML += "<input type='hidden' value='" + value.replace(/'/g,"&apos;") + "' name='" + parameter.name + "'/>";
});
innerHTML += '<input type="submit" value="Import into MB">';
innerHTML += '</form>';
return innerHTML;
}
// build form POST parameters that MB is waiting
function fnBuildFormParameters(release, edit_note) {
// Form parameters
var parameters = new Array();
appendParameter(parameters, 'name', release.title);
// Release Artist credits
buildArtistCreditsFormParameters(parameters, "", release.artist_credit);
if (release["secondary_types"]) {
for (var i=0; i < release.secondary_types.length; i++) {
appendParameter(parameters, 'type', release.secondary_types[i]);
}
}
appendParameter(parameters, 'type', release.type);
appendParameter(parameters, 'status', release.status);
appendParameter(parameters, 'language', release.language);
appendParameter(parameters, 'script', release.script);
appendParameter(parameters, 'packaging', release.packaging);
// Date + country
appendParameter(parameters, 'country', release.country);
if (!isNaN(release.year) && release.year != 0) { appendParameter(parameters, 'date.year', release.year); };
if (!isNaN(release.month) && release.month != 0) { appendParameter(parameters, 'date.month', release.month); };
if (!isNaN(release.day) && release.day != 0) { appendParameter(parameters, 'date.day', release.day); };
// Barcode
appendParameter(parameters, 'barcode', release.barcode);
// Label + catnos
for (var i=0; i < release.labels.length; i++) {
var label = release.labels[i];
appendParameter(parameters, 'labels.'+i+'.name', label.name);
appendParameter(parameters, 'labels.'+i+'.mbid', label.mbid);
if (label.catno != "none") {
appendParameter(parameters, 'labels.'+i+'.catalog_number', label.catno);
}
}
// URLs
for (var i=0; i < release.urls.length; i++) {
var url = release.urls[i];
appendParameter(parameters, 'urls.'+i+'.url', url.url);
appendParameter(parameters, 'urls.'+i+'.link_type', url.link_type);
}
// Mediums
for (var i=0; i < release.discs.length; i++) {
var disc = release.discs[i];
appendParameter(parameters, 'mediums.'+i+'.format', disc.format);
appendParameter(parameters, 'mediums.'+i+'.name', disc.title);
// Tracks
for (var j=0; j < disc.tracks.length; j++) {
var track = disc.tracks[j];
appendParameter(parameters, 'mediums.'+i+'.track.'+j+'.number', track.number);
appendParameter(parameters, 'mediums.'+i+'.track.'+j+'.name', track.title);
var tracklength = (typeof track.duration != 'undefined' && track.duration != '') ? track.duration : "?:??";
appendParameter(parameters, 'mediums.'+i+'.track.'+j+'.length', tracklength);
buildArtistCreditsFormParameters(parameters, 'mediums.'+i+'.track.'+j+'.', track.artist_credit);
}
}
// Add Edit note parameter
appendParameter(parameters, 'edit_note', edit_note);
return parameters;
}
// --------------------------------------- privates ----------------------------------------- //
function appendParameter(parameters, paramName, paramValue) {
if(!paramValue) return;
parameters.push( { name: paramName, value: paramValue } );
}
function luceneEscape(text) {
var newtext = text.replace(/[-[\]{}()*+?~:\\^!"]/g, "\\$&");
return newtext.replace("&&", "\&&").replace("||", "\||");
}
function buildArtistCreditsFormParameters(parameters, paramPrefix, artist_credit) {
if(!artist_credit) return;
for (var i=0; i < artist_credit.length; i++) {
var ac = artist_credit[i];
appendParameter(parameters, paramPrefix+'artist_credit.names.'+i+'.name', ac.credited_name);
appendParameter(parameters, paramPrefix+'artist_credit.names.'+i+'.artist.name', ac.artist_name);
appendParameter(parameters, paramPrefix+'artist_credit.names.'+i+'.artist.mbid', ac.artist_mbid);
if (typeof ac.joinphrase != 'undefined' && ac.joinphrase != "") {
appendParameter(parameters, paramPrefix+'artist_credit.names.'+i+'.join_phrase', ac.joinphrase);
}
}
}
// ---------------------------------- expose publics here ------------------------------------ //
return {
buildSearchLink: fnBuildSearchLink,
buildFormHTML: fnBuildFormHTML,
buildFormParameters: fnBuildFormParameters
};
})();