bufferingSimulator.js

var bufferingSimulator = (function () {
	var facade = require('logic/event/facade');
	var bufferingIntervalId,
		lastBufferingTimeoutId,
		bufferingFrequencyInMs = 5000,
		bufferingDurationInMs = 2000;

	function startBuffering () {
		clear();
		var counter = 0;
		bufferingIntervalId = setInterval(function () {
			counter++;
			if (counter % (bufferingFrequencyInMs / 10) === 0) {
				sendBufferEmpty();
			} else if ((counter > bufferingFrequencyInMs / 10) && (counter % (bufferingFrequencyInMs / 10) === bufferingDurationInMs / 10)) {
				sendBufferFull();
			}
		}, 10);
	}

	function stopBuffering () {
		clear();
		sendBufferFull();
	}

	function sendBufferEmpty() {
		console.info('#buffer_hunt simulate buffer_empty true ' + new Date());
		facade.send(facade.types.REPORT, facade.events.REPORT_BUFFER_EMPTY);
	}
	
	function sendBufferFull() {
		console.info('#buffer_hunt send buffer_empty false' + new Date());
		facade.send(facade.types.REPORT, facade.events.REPORT_BUFFER_FULL);
	}
	
	function clear () {
		clearBufferingInterval();
		clearLastBufferingTimeout();
	}

	function clearBufferingInterval () {
		if (bufferingIntervalId) {
			clearInterval(bufferingIntervalId);
		}
	}

	function clearLastBufferingTimeout () {
		if (lastBufferingTimeoutId) {
			clearTimeout(lastBufferingTimeoutId);
		}
	}

	function addListeners () {

		$('#startBuffering').click(function () {
			startBuffering();
		});

		$('#stopBuffering').click(function () {
			stopBuffering();
		});

		$('#bufferingFrequencyInput').change(function () {
			bufferingFrequencyInMs = $(this).val();
		});

		$('#bufferingDurationInput').change(function () {
			bufferingDurationInMs = $(this).val();
		});
	}

	function addElements () {
		var htmlContent = [
			'<div style="position: fixed;top: 30%;left: 20px;padding: 11px;background: rgba(255, 255, 255, 0.54);">',
			'Buffering frequency',
			'<input id="bufferingFrequencyInput" type="number" value="', bufferingFrequencyInMs, '" style="margin-bottom: 10px;"/>',
			'<br />',
			'Buffering duration',
			'<input  id="bufferingDurationInput" type="number" value="', bufferingDurationInMs, '"  style="margin-bottom: 10px;"/>',
			'<br />',
			'<button type="submit" id="startBuffering">',
			'Start Buffering',
			'</button>',
			'<button type="submit" id="stopBuffering">',
			'Stop Buffering',
			'</button>',
			'</div>'
		].join('');

		$('body').append(htmlContent);
	}

	function init () {
		addElements();
		addListeners();
	}

	return {
		init: init
	};
})();