467 lines
12 KiB
JavaScript
467 lines
12 KiB
JavaScript
(function ($) {
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var info, $container;
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// Initialize
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$(document).ready(function () {
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// Get library info
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info = H5PIntegration.getLibraryInfo();
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// Get and reset container
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$container = $('#h5p-admin-container').html('<p>' + info.message + '</p>');
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// Make it possible to select version
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var $version = $(getVersionSelect(info.versions)).appendTo($container);
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// Add "go" button
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$('<button/>', {
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class: 'h5p-admin-upgrade-button',
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text: info.buttonLabel,
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click: function () {
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// Start new content upgrade
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new ContentUpgrade($version.val());
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}
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}).appendTo($container);
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});
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/**
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* Generate html for version select.
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*
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* @param {Object} versions
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* @returns {String}
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*/
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var getVersionSelect = function (versions) {
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var html = '';
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for (var id in versions) {
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html += '<option value="' + id + '">' + versions[id] + '</option>';
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}
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if (html !== '') {
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html = '<select>' + html + '</select>';
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return html;
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}
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};
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/**
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* Private. Helps process each property on the given object asynchronously in serial order.
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*
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* @param {Object} obj
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* @param {Function} process
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* @param {Function} finished
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*/
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var asyncSerial = function (obj, process, finished) {
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var id, isArray = obj instanceof Array;
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// Keep track of each property that belongs to this object.
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if (!isArray) {
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var ids = [];
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for (id in obj) {
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if (obj.hasOwnProperty(id)) {
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ids.push(id);
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}
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}
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}
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var i = -1; // Keeps track of the current property
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/**
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* Private. Process the next property
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*/
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var next = function () {
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id = isArray ? i : ids[i];
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process(id, obj[id], check);
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};
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/**
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* Private. Check if we're done or have an error.
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*
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* @param {String} err
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*/
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var check = function (err) {
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i++;
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if (i === (isArray ? obj.length : ids.length) || (err !== undefined && err !== null)) {
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finished(err);
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}
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else {
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next();
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}
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};
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check(); // Start
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};
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/**
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* Make it easy to keep track of version details.
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*
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* @param {String} version
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* @param {Number} libraryId
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* @returns {_L1.Version}
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*/
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function Version(version, libraryId) {
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if (libraryId !== undefined) {
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version = info.versions[libraryId];
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// Public
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this.libraryId = libraryId;
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}
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var versionSplit = version.split('.', 3);
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// Public
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this.major = versionSplit[0];
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this.minor = versionSplit[1];
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/**
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* Public. Custom string for this object.
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*
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* @returns {String}
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*/
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this.toString = function () {
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return version;
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};
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}
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/**
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* Displays a throbber in the status field.
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*
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* @param {String} msg
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* @returns {_L1.Throbber}
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*/
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function Throbber(msg) {
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var $throbber = H5PUtils.throbber(msg);
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$container.html('').append($throbber);
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/**
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* Makes it possible to set the progress.
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*
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* @param {String} progress
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*/
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this.setProgress = function (progress) {
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$throbber.text(msg + ' ' + progress);
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};
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}
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/**
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* Start a new content upgrade.
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*
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* @param {Number} libraryId
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* @returns {_L1.ContentUpgrade}
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*/
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function ContentUpgrade(libraryId) {
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var self = this;
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// Get selected version
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self.version = new Version(null, libraryId);
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// Create throbber with loading text and progress
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self.throbber = new Throbber(info.inProgress.replace('%ver', self.version));
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// Get the next batch
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self.nextBatch({
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libraryId: libraryId,
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token: info.token
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});
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}
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/**
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* Get the next batch and start processing it.
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*
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* @param {Object} outData
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*/
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ContentUpgrade.prototype.nextBatch = function (outData) {
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var self = this;
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$.post(info.url, outData, function (inData) {
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if (!(inData instanceof Object)) {
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// Print errors from backend
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return self.setStatus(inData);
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}
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if (inData.left === 0) {
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// Nothing left to process
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return self.setStatus(info.done);
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}
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self.left = inData.left;
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self.token = inData.token;
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// Start processing
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self.processBatch(inData.params);
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});
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};
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/**
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* Set current status message.
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*
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* @param {String} msg
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*/
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ContentUpgrade.prototype.setStatus = function (msg) {
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$container.html(msg);
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};
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/**
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* Process the given parameters.
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*
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* @param {Object} parameters
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*/
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ContentUpgrade.prototype.processBatch = function (parameters) {
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var self = this;
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var upgraded = {}; // Track upgraded params
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var current = 0; // Track progress
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asyncSerial(parameters, function (id, params, next) {
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// Make params possible to work with
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params = JSON.parse(params);
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// Upgrade this content.
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self.upgrade(info.library.name, new Version(info.library.version), self.version, params, function (err, params) {
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if (!err) {
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upgraded[id] = JSON.stringify(params);
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current++;
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self.throbber.setProgress(Math.round((info.total - self.left + current) / (info.total / 100)) + ' %');
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}
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next(err);
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});
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}, function (err) {
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// Finished with all parameters that came in
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if (err) {
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return self.setStatus('<p>' + info.error + '<br/>' + err + '</p>');
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}
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// Save upgraded content and get next round of data to process
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self.nextBatch({
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libraryId: self.version.libraryId,
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token: self.token,
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params: JSON.stringify(upgraded)
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});
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});
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};
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/**
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* Upgade the given content.
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*
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* @param {String} name
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* @param {Version} oldVersion
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* @param {Version} newVersion
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* @param {Object} params
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* @param {Function} next
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* @returns {undefined}
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*/
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ContentUpgrade.prototype.upgrade = function (name, oldVersion, newVersion, params, next) {
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var self = this;
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// Load library details and upgrade routines
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self.loadLibrary(name, newVersion, function (err, library) {
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if (err) {
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return next(err);
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}
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// Run upgrade routines on params
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self.processParams(library, oldVersion, newVersion, params, function (err, params) {
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if (err) {
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return next(err);
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}
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// Check if any of the sub-libraries need upgrading
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asyncSerial(library.semantics, function (index, field, next) {
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self.processField(field, params[field.name], function (err, upgradedParams) {
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if (upgradedParams) {
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params[field.name] = upgradedParams;
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}
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next(err);
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});
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}, function (err) {
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next(err, params);
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});
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});
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});
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};
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/**
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* Load library data needed for content upgrade.
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*
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* @param {String} name
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* @param {Version} version
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* @param {Function} next
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*/
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ContentUpgrade.prototype.loadLibrary = function (name, version, next) {
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var self = this;
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$.ajax({
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dataType: 'json',
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url: info.libraryBaseUrl + '/' + name + '/' + version.major + '/' + version.minor
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}).fail(function () {
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next(info.errorData.replace('%lib', name + ' ' + version));
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}).done(function (library) {
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if (library.upgradesScript) {
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self.loadScript(library.upgradesScript, function (err) {
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if (err) {
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err = info.errorScript.replace('%lib', name + ' ' + version);
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}
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next(err, library);
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});
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}
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else {
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next(null, library);
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}
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});
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};
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/**
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* Load script with upgrade hooks.
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*
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* @param {String} url
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* @param {Function} next
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*/
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ContentUpgrade.prototype.loadScript = function (url, next) {
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$.ajax({
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dataType: 'script',
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cache: true,
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url: url
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}).fail(function () {
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next(true);
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}).done(function () {
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next();
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});
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};
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/**
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* Run upgrade hooks on params.
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*
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* @param {Object} library
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* @param {Version} oldVersion
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* @param {Version} newVersion
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* @param {Object} params
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* @param {Function} next
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*/
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ContentUpgrade.prototype.processParams = function (library, oldVersion, newVersion, params, next) {
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if (H5PUpgrades[library.name] === undefined) {
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if (library.upgradesScript) {
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// Upgrades script should be loaded so the upgrades should be here.
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return next(info.errorScript.replace('%lib', library.name + ' ' + newVersion));
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}
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// No upgrades script. Move on
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return next(null, params);
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}
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// Run upgrade hooks. Start by going through major versions
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asyncSerial(H5PUpgrades[library.name], function (major, minors, nextMajor) {
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if (major < oldVersion.major || major > newVersion.major) {
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// Older than the current version or newer than the selected
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nextMajor();
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}
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else {
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// Go through the minor versions for this major version
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asyncSerial(minors, function (minor, upgrade, nextMinor) {
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if (minor <= oldVersion.minor || minor > newVersion.minor) {
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// Older than or equal to the current version or newer than the selected
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nextMinor();
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}
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else {
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// We found an upgrade hook, run it
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upgrade(params, function (err, upgradedParams) {
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params = upgradedParams;
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nextMinor(err);
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});
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}
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}, nextMajor);
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}
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}, function (err) {
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next(err, params);
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});
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};
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/**
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* Process parameter fields to find and upgrade sub-libraries.
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*
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* @param {Object} field
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* @param {Object} params
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* @param {Function} next
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*/
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ContentUpgrade.prototype.processField = function (field, params, next) {
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var self = this;
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if (params === undefined) {
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return next();
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}
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switch (field.type) {
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case 'library':
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if (params.library === undefined || params.params === undefined) {
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return next();
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}
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// Look for available upgrades
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var usedLib = params.library.split(' ', 2);
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for (var i = 0; i < field.options.length; i++) {
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var availableLib = field.options[i].split(' ', 2);
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if (availableLib[0] === usedLib[0]) {
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if (availableLib[1] === usedLib[1]) {
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return next(); // Same version
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}
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// We have different versions
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var usedVer = new Version(usedLib[1]);
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var availableVer = new Version(availableLib[1]);
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if (usedVer.major > availableVer.major || (usedVer.major === availableVer.major && usedVer.minor >= availableVer.minor)) {
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return next(); // Larger or same version that's available
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}
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// A newer version is available, upgrade params
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return self.upgrade(availableLib[0], usedVer, availableVer, params.params, function (err, upgraded) {
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if (!err) {
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params.library = availableLib[0] + ' ' + availableVer.major + '.' + availableVer.minor;
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params.params = upgraded;
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}
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next(err, params);
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});
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}
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}
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next();
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break;
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case 'group':
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if (field.fields.length === 1) {
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// Single field to process, wrapper will be skipped
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self.processField(field.fields[0], params, function (err, upgradedParams) {
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if (upgradedParams) {
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params = upgradedParams;
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}
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next(err, params);
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});
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}
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else {
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// Go through all fields in the group
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asyncSerial(field.fields, function (index, subField, next) {
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self.processField(subField, params[subField.name], function (err, upgradedParams) {
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if (upgradedParams) {
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params[subField.name] = upgradedParams;
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}
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next(err);
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});
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}, function (err) {
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next(err, params);
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});
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}
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break;
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case 'list':
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// Go trough all params in the list
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asyncSerial(params, function (index, subParams, next) {
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self.processField(field.field, subParams, function (err, upgradedParams) {
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if (upgradedParams) {
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params[index] = upgradedParams;
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}
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next(err);
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});
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}, function (err) {
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next(err, params);
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});
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break;
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default:
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next();
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}
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};
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})(H5P.jQuery); |