plyr/src/js/plugins/ads.js
2018-01-19 14:26:25 +11:00

513 lines
22 KiB
JavaScript

// ==========================================================================
// Advertisment plugin
// Create an account with our ad partner, vi here:
// https://www.vi.ai/publisher-video-monetization/
// ==========================================================================
/* global google */
import utils from '../utils';
// Events are different on various devices. We set the correct events, based on userAgent.
const getStartEvents = () => {
let events = ['click'];
// TODO: Detecting touch is tricky, we should look at other ways?
// For mobile users the start event will be one of
// touchstart, touchend and touchmove.
if (navigator.userAgent.match(/iPhone/i) || navigator.userAgent.match(/iPad/i) || navigator.userAgent.match(/Android/i)) {
events = [
'touchstart',
'touchend',
'touchmove',
];
}
return events;
};
class Ads {
constructor(player) {
this.player = player;
this.playing = false;
this.initialized = false;
// Check if a tag URL is provided.
if (!utils.is.url(player.config.ads.tagUrl)) {
return this;
}
// Check if the Google IMA3 SDK is loaded
if (!utils.is.object(window.google)) {
utils.loadScript(player.config.urls.googleIMA.api, () => {
this.ready();
});
} else {
this.ready();
}
}
ready() {
this.time = Date.now();
this.startEvents = getStartEvents();
this.adDisplayContainer = null;
this.adsDisplayElement = null;
this.adsManager = null;
this.adsLoader = null;
this.adsCuePoints = null;
this.currentAd = null;
this.events = {};
this.safetyTimer = null;
// Setup a simple promise to resolve if the IMA loader is ready.
this.adsLoaderResolve = () => {};
this.adsLoaderPromise = new Promise(resolve => {
this.adsLoaderResolve = resolve;
});
this.adsLoaderPromise.then(() => {
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] adsLoader resolved!`, this.adsLoader);
});
// Setup a promise to resolve if the IMA manager is ready.
this.adsManagerResolve = () => {};
this.adsManagerPromise = new Promise(resolve => {
// Resolve our promise.
this.adsManagerResolve = resolve;
});
this.adsManagerPromise.then(() => {
// Clear the safety timer.
this.clearSafetyTimer('onAdsManagerLoaded()');
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] adsManager resolved!`, this.adsManager);
});
// Start ticking our safety timer. If the whole advertisement
// thing doesn't resolve within our set time; we bail.
this.startSafetyTimer(12000, 'ready()');
// Setup the ad display container.
this.setupAdDisplayContainer();
// Setup the IMA SDK.
this.setupIMA();
// Set listeners on the Plyr instance.
this.setupListeners();
}
setupIMA() {
const { container } = this.player.elements;
// Create ads loader.
this.adsLoader = new google.ima.AdsLoader(this.adDisplayContainer);
// Listen and respond to ads loaded and error events.
this.adsLoader.addEventListener(google.ima.AdsManagerLoadedEvent.Type.ADS_MANAGER_LOADED, event => this.onAdsManagerLoaded(event), false);
this.adsLoader.addEventListener(google.ima.AdErrorEvent.Type.AD_ERROR, error => this.onAdError(error), false);
// Request video ads.
const adsRequest = new google.ima.AdsRequest();
adsRequest.adTagUrl = this.player.config.ads.tagUrl;
// Specify the linear and nonlinear slot sizes. This helps the SDK to
// select the correct creative if multiple are returned.
adsRequest.linearAdSlotWidth = container.offsetWidth;
adsRequest.linearAdSlotHeight = container.offsetHeight;
adsRequest.nonLinearAdSlotWidth = container.offsetWidth;
adsRequest.nonLinearAdSlotHeight = container.offsetHeight;
this.adsLoader.requestAds(adsRequest);
this.adsLoaderResolve();
}
onAdsManagerLoaded(adsManagerLoadedEvent) {
// Get the ads manager.
const settings = new google.ima.AdsRenderingSettings();
// Tell the SDK to save and restore content video state on our behalf.
settings.restoreCustomPlaybackStateOnAdBreakComplete = true;
settings.enablePreloading = true;
// The SDK is polling currentTime on the contentPlayback. And needs a duration
// so it can determine when to start the mid- and post-roll.
this.adsManager = adsManagerLoadedEvent.getAdsManager(this.player, settings);
// Get the cue points for any mid-rolls by filtering out the pre- and post-roll.
this.adsCuePoints = this.adsManager.getCuePoints();
// Add listeners to the required events.
this.adsManager.addEventListener(google.ima.AdErrorEvent.Type.AD_ERROR, error => this.onAdError(error));
this.adsManager.addEventListener(google.ima.AdEvent.Type.CONTENT_PAUSE_REQUESTED, event => this.onAdEvent(event));
this.adsManager.addEventListener(google.ima.AdEvent.Type.CONTENT_RESUME_REQUESTED, event => this.onAdEvent(event));
this.adsManager.addEventListener(google.ima.AdEvent.Type.ALL_ADS_COMPLETED, event => this.onAdEvent(event));
this.adsManager.addEventListener(google.ima.AdEvent.Type.AD_BREAK_READY, event => this.onAdEvent(event));
// Listen to any additional events, if necessary.
this.adsManager.addEventListener(google.ima.AdEvent.Type.LOADED, event => this.onAdEvent(event));
this.adsManager.addEventListener(google.ima.AdEvent.Type.STARTED, event => this.onAdEvent(event));
this.adsManager.addEventListener(google.ima.AdEvent.Type.COMPLETE, event => this.onAdEvent(event));
// Resolve our adsManager.
this.adsManagerResolve();
}
onAdEvent(event) {
const { container } = this.player.elements;
// Retrieve the ad from the event. Some events (e.g. ALL_ADS_COMPLETED)
// don't have ad object associated.
const ad = event.getAd();
// Set the currently played ad. This information could be used by callback
// events.
this.currentAd = ad;
// let intervalTimer;
switch (event.type) {
case google.ima.AdEvent.Type.AD_BREAK_READY:
// This event indicates that a mid-roll ad is ready to start.
// We pause the player and tell the adsManager to start playing the ad.
this.player.debug.log(
`[${(Date.now() - this.time) / 1000}s][IMA SDK] AD_BREAK_READY |`,
'Fired when an ad rule or a VMAP ad break would have played if autoPlayAdBreaks is false.',
);
// this.handleEventListeners('AD_BREAK_READY');
// this.playing = true;
// this.adsManager.start();
break;
case google.ima.AdEvent.Type.AD_METADATA:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] AD_METADATA |`, 'Fired when an ads list is loaded.');
break;
case google.ima.AdEvent.Type.ALL_ADS_COMPLETED:
this.player.debug.log(
`[${(Date.now() - this.time) / 1000}s][IMA SDK] ALL_ADS_COMPLETED |`,
'Fired when the ads manager is done playing all the ads.',
);
this.handleEventListeners('ALL_ADS_COMPLETED');
break;
case google.ima.AdEvent.Type.CLICK:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] CLICK |`, 'Fired when the ad is clicked.');
break;
case google.ima.AdEvent.Type.COMPLETE:
// This event indicates the ad has finished - the video player
// can perform appropriate UI actions, such as removing the timer for
// remaining time detection.
// clearInterval(intervalTimer);
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] COMPLETE |`, 'Fired when the ad completes playing.');
this.handleEventListeners('COMPLETE');
this.playing = false;
this.adsDisplayElement.style.display = 'none';
if (this.player.currentTime < this.player.duration) {
this.player.play();
}
break;
case google.ima.AdEvent.Type.CONTENT_PAUSE_REQUESTED:
this.player.debug.log(
`[${(Date.now() - this.time) / 1000}s][IMA SDK] CONTENT_PAUSE_REQUESTED |`,
'Fired when content should be paused. This usually happens right before an ad is about to cover the content.',
);
this.handleEventListeners('CONTENT_PAUSE_REQUESTED');
this.player.pause();
break;
case google.ima.AdEvent.Type.CONTENT_RESUME_REQUESTED:
this.player.debug.log(
`[${(Date.now() - this.time) / 1000}s][IMA SDK] CONTENT_RESUME_REQUESTED |`,
'Fired when content should be resumed. This usually happens when an ad finishes or collapses.',
);
this.handleEventListeners('CONTENT_RESUME_REQUESTED');
if (this.player.currentTime < this.player.duration) {
this.player.play();
}
break;
case google.ima.AdEvent.Type.LOADED:
// This is the first event sent for an ad - it is possible to
// determine whether the ad is a video ad or an overlay.
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] LOADED |`, event.getAd().getContentType());
this.handleEventListeners('LOADED');
// Show the ad display element.
this.adsDisplayElement.style.display = 'block';
if (!ad.isLinear()) {
// Position AdDisplayContainer correctly for overlay.
ad.width = container.offsetWidth;
ad.height = container.offsetHeight;
}
// console.info('Ad type: ' + event.getAd().getAdPodInfo().getPodIndex());
// console.info('Ad time: ' + event.getAd().getAdPodInfo().getTimeOffset());
break;
case google.ima.AdEvent.Type.STARTED:
// This event indicates the ad has started - the video player
// can adjust the UI, for example display a pause button and
// remaining time.
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] STARTED |`, 'Fired when the ad starts playing.');
this.player.pause();
this.playing = true;
this.handleEventListeners('STARTED');
break;
case google.ima.AdEvent.Type.DURATION_CHANGE:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] DURATION_CHANGE |`, "Fired when the ad's duration changes.");
break;
case google.ima.AdEvent.Type.FIRST_QUARTILE:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] FIRST_QUARTILE |`, 'Fired when the ad playhead crosses first quartile.');
break;
case google.ima.AdEvent.Type.IMPRESSION:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] IMPRESSION |`, 'Fired when the impression URL has been pinged.');
break;
case google.ima.AdEvent.Type.INTERACTION:
this.player.debug.log(
`[${(Date.now() - this.time) / 1000}s][IMA SDK] INTERACTION |`,
'Fired when an ad triggers the interaction callback. Ad interactions contain an interaction ID string in the ad data.',
);
break;
case google.ima.AdEvent.Type.LINEAR_CHANGED:
this.player.debug.log(
`[${(Date.now() - this.time) / 1000}s][IMA SDK] LINEAR_CHANGED |`,
'Fired when the displayed ad changes from linear to nonlinear, or vice versa.',
);
break;
case google.ima.AdEvent.Type.MIDPOINT:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] MIDPOINT |`, 'Fired when the ad playhead crosses midpoint.');
break;
case google.ima.AdEvent.Type.PAUSED:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] PAUSED |`, 'Fired when the ad is paused.');
break;
case google.ima.AdEvent.Type.RESUMED:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] RESUMED |`, 'Fired when the ad is resumed.');
break;
case google.ima.AdEvent.Type.SKIPPABLE_STATE_CHANGED:
this.player.debug.log(
`[${(Date.now() - this.time) / 1000}s][IMA SDK] SKIPPABLE_STATE_CHANGED |`,
'Fired when the displayed ads skippable state is changed.',
);
break;
case google.ima.AdEvent.Type.SKIPPED:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] SKIPPED |`, 'Fired when the ad is skipped by the user.');
break;
case google.ima.AdEvent.Type.THIRD_QUARTILE:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] THIRD_QUARTILE |`, 'Fired when the ad playhead crosses third quartile.');
break;
case google.ima.AdEvent.Type.USER_CLOSE:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] USER_CLOSE |`, 'Fired when the ad is closed by the user.');
break;
case google.ima.AdEvent.Type.VOLUME_CHANGED:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] VOLUME_CHANGED |`, 'Fired when the ad volume has changed.');
break;
case google.ima.AdEvent.Type.VOLUME_MUTED:
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] VOLUME_MUTED |`, 'Fired when the ad volume has been muted.');
break;
default:
break;
}
}
onAdError(adErrorEvent) {
this.cancel();
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK] ERROR |`, adErrorEvent);
}
setupAdDisplayContainer() {
const { wrapper } = this.player.elements;
// So we can run VPAID2.
google.ima.settings.setVpaidMode(google.ima.ImaSdkSettings.VpaidMode.ENABLED);
// Set language.
// Todo: Could make a config option out of this locale value.
google.ima.settings.setLocale('en');
// We assume the adContainer is the video container of the plyr element
// that will house the ads.
this.adDisplayContainer = new google.ima.AdDisplayContainer(wrapper);
this.adsDisplayElement = wrapper.firstChild;
// The AdDisplayContainer call from google IMA sets the style attribute
// by default. We remove the inline style and set it through the stylesheet.
this.adsDisplayElement.removeAttribute('style');
// Set class name on the adDisplayContainer element.
this.adsDisplayElement.setAttribute('class', this.player.config.classNames.ads);
// Play ads when clicked. Wait until the adsManager and adsLoader
// are both resolved.
Promise.all([
this.adsManagerPromise,
this.adsLoaderPromise,
]).then(() => {
this.setOnClickHandler(this.adsDisplayElement, this.play);
});
}
/**
* Setup hooks for Plyr and window events. This ensures
* the mid- and post-roll launch at the correct time. And
* resize the advertisement when the player resizes.
*/
setupListeners() {
const { container } = this.player.elements;
let time;
// Add listeners to the required events.
this.player.on('ended', () => {
this.adsLoader.contentComplete();
});
this.player.on('seeking', event => {
time = this.player.currentTime;
return time;
});
this.player.on('seeked', event => {
const seekedTime = this.player.currentTime;
this.adsCuePoints.forEach((cuePoint, index) => {
if (time < cuePoint && cuePoint < seekedTime) {
this.adsManager.discardAdBreak();
this.adsCuePoints.splice(index, 1);
}
});
});
// Listen to the resizing of the window. And resize ad accordingly.
window.addEventListener('resize', () => {
this.adsManager.resize(container.offsetWidth, container.offsetHeight, google.ima.ViewMode.NORMAL);
});
}
/**
* Initialize the adsManager and start playing advertisements.
*/
play() {
const { container } = this.player.elements;
// Initialize the container. Must be done via a user action on mobile devices.
this.adDisplayContainer.initialize();
// Play the requested advertisement whenever the adsManager is ready.
this.adsManagerPromise.then(() => {
try {
if (!this.initialized) {
// Initialize the ads manager. Ad rules playlist will start at this time.
this.adsManager.init(container.offsetWidth, container.offsetHeight, google.ima.ViewMode.NORMAL);
// Call play to start showing the ad. Single video and overlay ads will
// start at this time; the call will be ignored for ad rules.
this.adsManager.start();
}
this.initialized = true;
} catch (adError) {
// An error may be thrown if there was a problem with the VAST response.
this.adsDisplayElement.remove();
if (this.player.debug) {
throw new Error(adError);
}
this.player.play();
}
});
}
/**
* Destroy the adsManager so we can grab new ads after this.
* If we don't then we're not allowed to call new ads based
* on google policies, as they interpret this as an accidental
* video requests. https://developers.google.com/interactive-
* media-ads/docs/sdks/android/faq#8
*/
cancel() {
this.player.debug.warn(`[${(Date.now() - this.time) / 1000}s][IMA SDK]`, 'Advertisement cancelled.');
// Todo: Removing the ad container might be problematic if we were to recreate the adsManager. Think of playlists. Every new video you need to request a new VAST xml and preload the advertisement.
this.adsDisplayElement.remove();
// Tell our adsManager to go bye bye.
this.adsManagerPromise.then(() => {
if (this.adsManager) {
this.adsManager.destroy();
}
});
}
/**
* Handles callbacks after an ad event was invoked.
*/
handleEventListeners(event) {
if (typeof this.events[event] !== 'undefined') {
this.events[event].call(this);
}
}
/**
* Set start event listener on a DOM element and triggers the
* callback when clicked.
* @param {element} element - The element on which to set the listener
* @param {function} callback - The callback which will be invoked once triggered.
*/
setOnClickHandler(element, callback) {
for (let i = 0; i < this.startEvents.length; i += 1) {
const startEvent = this.startEvents[i];
element.addEventListener(
startEvent,
event => {
if ((event.type === 'touchend' && startEvent === 'touchend') || event.type === 'click') {
callback.call(this);
}
},
{ once: true },
);
}
}
/**
* Add event listeners
* @param {string} event - Event type
* @param {function} callback - Callback for when event occurs
*/
on(event, callback) {
this.events[event] = callback;
return this;
}
/**
* startSafetyTimer
* Setup a safety timer for when the ad network
* doesn't respond for whatever reason. The advertisement has 12 seconds
* to get its shit together. We stop this timer when the advertisement
* is playing, or when a user action is required to start, then we
* clear the timer on ad ready.
* @param {Number} time
* @param {String} from
* @private
*/
startSafetyTimer(time, from) {
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK]`, `Safety timer invoked timer from: ${from}`);
this.safetyTimer = window.setTimeout(() => {
this.cancel();
this.clearSafetyTimer('startSafetyTimer()');
}, time);
}
/**
* clearSafetyTimer
* @param {String} from
* @private
*/
clearSafetyTimer(from) {
if (typeof this.safetyTimer !== 'undefined' && this.safetyTimer !== null) {
this.player.debug.log(`[${(Date.now() - this.time) / 1000}s][IMA SDK]`, `Safety timer cleared timer from: ${from}`);
clearTimeout(this.safetyTimer);
this.safetyTimer = undefined;
}
}
}
export default Ads;