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Mandolin = function (id, segments, opts) { var now = new Date().getTime(), storedItem, DEFAULT_START = now, DEFAULT_RATE = 1, COOKIE_NAME = 'ckpf_childrens_mandolin'; opts = opts || {}; this._id = id; this._segmentSet = segments; this._store = new Mandolin.Storage(COOKIE_NAME); this._opts = opts; this._rate = (opts.rate !== undefined) ? +opts.rate : DEFAULT_RATE; this._startTs = (opts.start !== undefined) ? new Date(opts.start).getTime() : new Date(DEFAULT_START).getTime(); this._endTs = (opts.end !== undefined) ? new Date(opts.end).getTime() : daysFromNow(ROLLING_PERIOD_DAYS); this._signupEndTs = (opts.signupEnd !== undefined) ? new Date(opts.signupEnd).getTime() : this._endTs; this._segment = null; // initially // Check for invalid options if (typeof id !== 'string') { throw new Error('Invalid Argument: id must be defined and be a string'); } if (Object.prototype.toString.call(segments) !== '[object Array]') { throw new Error('Invalid Argument: Segments are required.'); } if (opts.rate !== undefined && (opts.rate < 0 || opts.rate > 1)) { throw new Error('Invalid Argument: Rate must be between 0 and 1.'); } if (this._startTs > this._endTs) { throw new Error('Invalid Argument: end date must occur after start date.'); } if (!(this._startTs < this._signupEndTs && this._signupEndTs <= this._endTs)) { throw new Error('Invalid Argument: SignupEnd must be between start and end date'); } // Clear out expired items from Storage before looking for stashed segment data removeExpired.call(this, now); // Load segment override from cookie and validate segment if set. var overrides = window.bbccookies.get().match(/ckns_mandolin_setSegments=([^;]+)/); if (overrides !== null) { eval('overrides = ' + decodeURIComponent(RegExp.$1) + ';'); if(overrides[this._id] && this._segmentSet.indexOf(overrides[this._id]) == -1){ throw new Error('Invalid Override: overridden segment should exist in segments array'); } } if (overrides !== null && overrides[this._id]){ this._segment = overrides[this._id]; } else if ((storedItem = this._store.getItem(this._id))) { this._segment = storedItem.segment; } else if (this._startTs <= now && now < this._signupEndTs && now <= this._endTs && this._store.isEnabled() === true) { this._segment = pick(segments, this._rate); if (opts.end === undefined) { this._store.setItem(this._id, {segment: this._segment}); } else { this._store.setItem(this._id, {segment: this._segment, end: this._endTs}); } log.call(this, 'mandolin_segment'); } // order matters: do this after the segment has been populated log.call(this, 'mandolin_view'); }; Mandolin.prototype.getSegment = function () { return this._segment; }; function log(actionType, params) { var that = this; require(['istats-1'], function (istats) { istats.log(actionType, that._id + ':' + that._segment, params ? params : {}); }); } function removeExpired(expires) { var items = this._store.getItems(), expiresInt = +expires; for (var key in items) { if (items[key].end !== undefined && +items[key].end < expiresInt) { this._store.removeItem(key); } } } function getLastExpirationDate(data) { var winner = 0, rollingExpire = daysFromNow(ROLLING_PERIOD_DAYS); for (var key in data) { if (data[key].end === undefined && rollingExpire > winner) { winner = rollingExpire; } else if (+data[key].end > winner) { winner = +data[key].end; } } return (winner) ? new Date(winner) : new Date(rollingExpire) ; } Mandolin.prototype.log = function (params) { log.call(this, 'mandolin_log', params); }; Mandolin.prototype.convert = function (params) { log.call(this, 'mandolin_convert', params); this.convert = function () {}; }; function daysFromNow(n) { var endDate; endDate = new Date().getTime() + (n * 60 * 60 * 24) * 1000; return endDate; } function pick(segments, rate) { var picked, min = 0, max = segments.length - 1; if (typeof rate === 'number' && Math.random() > rate) { return null; } do { picked = Math.floor(Math.random() * (max - min + 1)) + min; } while (picked > max); return segments[picked]; } Mandolin.Storage = function (name) { validateCookieName(name); this._cookieName = name; this._isEnabled = (bbccookies.isAllowed(this._cookieName) === true && bbccookies.cookiesEnabled() === true); }; Mandolin.Storage.prototype.setItem = function (key, value) { var storeData = this.getItems(); storeData[key] = value; this.save(storeData); return value; }; Mandolin.Storage.prototype.isEnabled = function () { return this._isEnabled; }; Mandolin.Storage.prototype.getItem = function (key) { var storeData = this.getItems(); return storeData[key]; }; Mandolin.Storage.prototype.removeItem = function (key) { var storeData = this.getItems(); delete storeData[key]; this.save(storeData); }; Mandolin.Storage.prototype.getItems = function () { return deserialise(this.readCookie(this._cookieName) || ''); }; Mandolin.Storage.prototype.save = function (data) { //TODO: Is this mixing concerns to have Storage aware of item expiry? window.bbccookies.set( this._cookieName + '=' + encodeURIComponent(serialise(data)) + '; ' + 'path=/;' + 'expires=' + getLastExpirationDate(data).toUTCString() + ';' ); }; Mandolin.Storage.prototype.readCookie = function (name) { var nameEq = name + '=', ca = window.bbccookies.get().split('; '), i, c; validateCookieName(name); for (i = 0; i < ca.length; i++) { c = ca[i]; if (c.indexOf(nameEq) === 0) { return decodeURIComponent(c.substring(nameEq.length, c.length)); } } return null; }; function serialise(o) { var str = ''; for (var p in o) { if (o.hasOwnProperty(p)) { str += '"' + p + '"' + ':' + (typeof o[p] === 'object' ? (o[p] === null? 'null' : '{' + serialise(o[p])+ '}') : '"' + o[p].toString() + '"') + ','; } } return str.replace(/,\}/g, '}').replace(/,$/g, ''); } function deserialise(str) { var o; str = '{' + str + '}'; if ( !validateSerialisation(str) ) { throw 'Invalid input provided for deserialisation.'; } eval('o = ' + str); return o; } var validateSerialisation = (function () { var OBJECT_TOKEN = '<Object>', ESCAPED_CHAR = '"\\n\\r\\u2028\\u2029\\u000A\\u000D\\u005C', ALLOWED_CHAR = '([^' + ESCAPED_CHAR + ']|\\\\[' + ESCAPED_CHAR + '])', KEY = '"' + ALLOWED_CHAR + '+"', VALUE = '(null|"' + ALLOWED_CHAR + '*"|' + OBJECT_TOKEN + ')', KEY_VALUE = KEY + ':' + VALUE, KEY_VALUE_SEQUENCE = '(' + KEY_VALUE + ',)*' + KEY_VALUE, OBJECT_LITERAL = '({}|{' + KEY_VALUE_SEQUENCE + '})', objectPattern = new RegExp(OBJECT_LITERAL, 'g'); return function(str) { if (str.indexOf(OBJECT_TOKEN) !== -1) return false; while (str.match(objectPattern)) { str = str.replace(objectPattern, OBJECT_TOKEN); } return str === OBJECT_TOKEN; } 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'https://web.archive.org/web/20170923165529/https://childrens-web.files.bbci.co.uk/cbbc/www/assets/984e5e0/javascripts/follows-panel', 'follows-panel/childrens-follows-panel': 'https://web.archive.org/web/20170923165529/https://childrens-web.files.bbci.co.uk/cbbc/www/assets/984e5e0/javascripts/personalisation/personalisation.min', 'personalisation': 'https://web.archive.org/web/20170923165529/https://childrens-web.files.bbci.co.uk/cbbc/www/assets/984e5e0/javascripts/personalisation', 'domReady': 'https://web.archive.org/web/20170923165529/https://childrens-web.files.bbci.co.uk/cbbc/www/assets/984e5e0/javascripts/libraries/require/domReady.min', 'relay-1': 'https://web.archive.org/web/20170923165529/https://static.bbci.co.uk/frameworks/relay/0.2.6/sharedmodules/relay-1', 'jssignals-1': 'https://web.archive.org/web/20170923165529/https://static.bbci.co.uk/frameworks/jssignals/0.3.6/modules/jssignals-1' }, shim: { 'angular/angular': { exports: 'angular' }, 'TweenMax': { exports: 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data-stats-interaction-variant="show" data-stats-interaction-position="1"> <span class="channel-banner-link__image"> <span class="responsive-img responsive-img--16x9 "> <span class="delayed-png-image-load" data-src="https://web.archive.org/web/20170923165529/https://ichef.bbci.co.uk/childrens-responsive-ichef-live/r/{width}/{pixel_ratio}x/cbbc/peter-rabbit-brand-index.png" data-alt="Peter Rabbit."></span> <noscript><img src="https://web.archive.org/web/20170923165529im_/https://ichef.bbci.co.uk/childrens-responsive-ichef-live/r/400/1x/cbbc/peter-rabbit-brand-index.png" alt="Peter Rabbit."/></noscript> </span> </span> </a> </li><li class="channel-banner__list-item"> <a class="channel-banner__link channel-banner-link" href="/web/20170923165529/http://www.bbc.co.uk/cbeebies/shows/topsy-and-tim" data-stats-interaction="channel_banner" data-stats-interaction-variant="show" data-stats-interaction-position="2"> <span class="channel-banner-link__image"> <span class="responsive-img responsive-img--16x9 "> <span class="delayed-png-image-load" data-src="https://web.archive.org/web/20170923165529/https://ichef.bbci.co.uk/childrens-responsive-ichef-live/r/{width}/{pixel_ratio}x/cbbc/Topsy-and-Tim.png" data-alt="Topsy and Tim."></span> <noscript><img src="https://web.archive.org/web/20170923165529im_/https://ichef.bbci.co.uk/childrens-responsive-ichef-live/r/400/1x/cbbc/Topsy-and-Tim.png" alt="Topsy and Tim."/></noscript> </span> </span> </a> </li><li class="channel-banner__list-item"> <a class="channel-banner__link channel-banner-link" href="/web/20170923165529/http://www.bbc.co.uk/cbeebies/shows/the-lets-go-club" data-stats-interaction="channel_banner" data-stats-interaction-variant="show" data-stats-interaction-position="3"> <span class="channel-banner-link__image"> <span class="responsive-img responsive-img--16x9 "> <span class="delayed-png-image-load" data-src="https://web.archive.org/web/20170923165529/https://ichef.bbci.co.uk/childrens-responsive-ichef-live/r/{width}/{pixel_ratio}x/cbbc/lets-go-club-AtoZ_characters-v2.png" data-alt="The Lets Go Club presenters."></span> <noscript><img src="https://web.archive.org/web/20170923165529im_/https://ichef.bbci.co.uk/childrens-responsive-ichef-live/r/400/1x/cbbc/lets-go-club-AtoZ_characters-v2.png" alt="The Lets Go Club presenters."/></noscript> </span> </span> </a> </li> </ul> <div class="channel-banner__footer"> <a class="channel-banner-close" data-stats-interaction="channel_banner" data-stats-interaction-variant="close" data-stats-interaction-action="button" data-channel-banner-close data-feedback-banner-open> <i aria-hidden="true" class="gelicon gelicon--no gelicon--leading"></i><span class="channel-banner-close__text">No thanks</span> </a> <span class="channel-banner__title">Looking for CBeebies shows?</span> </div> </div> </div> </div> </div> </section> <section 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<li class="feedback-banner__option" data-feedback-banner-close data-stats-interaction="channel_banner" data-stats-interaction-variant="feedback" data-stats-interaction-position="0" data-stats-interaction-action="button" data-istats-pos="0" data-istats-click="cross_channel_feedback"> <span>I don't like those shows</span> </li> <li class="feedback-banner__option" data-feedback-banner-close data-stats-interaction="channel_banner" data-stats-interaction-variant="feedback" data-stats-interaction-position="1" data-stats-interaction-action="button" data-istats-pos="1" data-istats-click="cross_channel_feedback"> <span>I'm too old for CBeebies</span> </li> </ul> <div class="feedback-banner__image"> <img class="feedback-banner__image-inner" src="https://web.archive.org/web/20170923165529im_/https://childrens-web.files.bbci.co.uk/cbbc/www/assets/984e5e0/images/feedback/feedbackImage.png" alt=""/> </div> </div> </div> </section> </div> <script type="text/javascript"> require(['lib/Imager', 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