var presentation = ["<word>ex-wife<\/word>","<word>mother<\/word>","<word>grandmother<\/word>","<word>Jason and Polly's twin babies<\/word>","<word>editor<\/word>","<word>co-owner<\/word>","<word>local newspaper<\/word>","<word>Alice Cooper<\/word>","<word>Hal Cooper<\/word>","<word>Charles Smith<\/word>","<word>Betty Cooper<\/word>","<word>Polly Cooper<\/word>","<word>Riverdale Register<\/word>","<phrase><strong data-readahead=\"Alice Cooper\" class=\"presentation_word\">Alice Cooper<\/strong> is the <strong data-readahead=\"ex-wife\" class=\"presentation_word\">ex-wife<\/strong> of <strong data-readahead=\"Hal Cooper\" class=\"presentation_word\">Hal Cooper<\/strong>, <strong data-readahead=\"mother\" class=\"presentation_word\">mother<\/strong> of <strong data-readahead=\"Charles Smith\" class=\"presentation_word\">Charles Smith<\/strong>, <strong data-readahead=\"Betty Cooper\" class=\"presentation_word\">Betty Cooper<\/strong>, and <strong data-readahead=\"Polly Cooper\" class=\"presentation_word\">Polly Cooper<\/strong>, the <strong data-readahead=\"grandmother\" class=\"presentation_word\">grandmother<\/strong> of <strong data-readahead=\"Jason and Polly's twin babies\" class=\"presentation_word\">Jason and Polly's twin babies<\/strong> and the <strong data-readahead=\"editor\" class=\"presentation_word\">editor<\/strong> and <strong data-readahead=\"co-owner\" class=\"presentation_word\">co-owner<\/strong> of the <strong data-readahead=\"local newspaper\" class=\"presentation_word\">local newspaper<\/strong> The <strong data-readahead=\"Riverdale Register\" class=\"presentation_word\">Riverdale Register<\/strong>.<\/phrase>","<word>grew up<\/word>","<word>south side of Riverdale<\/word>","<word>attended the local high school<\/word>","<word>began dating Hal Cooper<\/word>","<word>went on to marry<\/word>","<word>have two daughters<\/word>","<word>Betty and Polly<\/word>","<word>high school<\/word>","<word>Alice and FP had a fling<\/word>","<word>she became pregnant with FP's baby<\/word>","<word>ran away<\/word>","<word>Sister's of Quiet Mercy<\/word>","<word>gave birth to the baby<\/word>","<word>gave the baby up for adoption<\/word>","<word>Hermione Lodge<\/word>","<word>Fred Andrews<\/word>","<word>FP Jones<\/word>","<word>Penelope Blossom<\/word>","<word>Hal Cooper<\/word>","<word>Hiram Lodge<\/word>","<word>Mary Andrews<\/word>","<word>Tom Keller<\/word>","<word>Sierra McKoy<\/word>","<word>Charles Smith<\/word>","<phrase>Alice <strong data-readahead=\"grew up\" class=\"presentation_word\">grew up<\/strong> on the <strong data-readahead=\"south side of Riverdale\" class=\"presentation_word\">south side of Riverdale<\/strong> and <strong data-readahead=\"attended the local high school\" class=\"presentation_word\">attended the local high school<\/strong> with <strong data-readahead=\"Hermione Lodge\" class=\"presentation_word\">Hermione Lodge<\/strong>, <strong data-readahead=\"Fred Andrews\" class=\"presentation_word\">Fred Andrews<\/strong>, <strong data-readahead=\"FP Jones\" class=\"presentation_word\">FP Jones<\/strong>, <strong data-readahead=\"Penelope Blossom\" class=\"presentation_word\">Penelope Blossom<\/strong>, <strong data-readahead=\"Hal Cooper\" class=\"presentation_word\">Hal Cooper<\/strong>, <strong data-readahead=\"Hiram Lodge\" class=\"presentation_word\">Hiram Lodge<\/strong>, <strong data-readahead=\"Mary Andrews\" class=\"presentation_word\">Mary Andrews<\/strong>, <strong data-readahead=\"Tom Keller\" class=\"presentation_word\">Tom Keller<\/strong> and <strong data-readahead=\"Sierra McKoy\" class=\"presentation_word\">Sierra McKoy<\/strong>. She <strong data-readahead=\"began dating Hal Cooper\" class=\"presentation_word\">began dating Hal Cooper<\/strong> and they later <strong data-readahead=\"went on to marry\" class=\"presentation_word\">went on to marry<\/strong> and <strong data-readahead=\"have two daughters\" class=\"presentation_word\">have two daughters<\/strong>, <strong data-readahead=\"Betty and Polly\" class=\"presentation_word\">Betty and Polly<\/strong>. During <strong data-readahead=\"high school\" class=\"presentation_word\">high school<\/strong>, <strong data-readahead=\"Alice and FP had a fling\" class=\"presentation_word\">Alice and FP had a fling<\/strong> when they were in <strong data-readahead=\"high school\">high school<\/strong> and then <strong data-readahead=\"she became pregnant with FP's baby\" class=\"presentation_word\">she became pregnant with FP's baby<\/strong>. She <strong data-readahead=\"ran away\" class=\"presentation_word\">ran away<\/strong> to the <strong data-readahead=\"Sister's of Quiet Mercy\" class=\"presentation_word\">Sister's of Quiet Mercy<\/strong>, where she <strong data-readahead=\"gave birth to the baby\" class=\"presentation_word\">gave birth to the baby<\/strong>, <strong data-readahead=\"Charles Smith\" class=\"presentation_word\">Charles Smith<\/strong>. She <strong data-readahead=\"gave the baby up for adoption\" class=\"presentation_word\">gave the baby up for adoption<\/strong> once he was born.<\/phrase>","<word>Alice's greatest kept secrets<\/word>","<word>member<\/word>","<word>Southside Serpents<\/word>","<word>Following her arrest<\/word>","<word>severed all ties with the gang<\/word>","<word>erased every article of her arrest<\/word>","<word>worked for the FBI<\/word>","<word>teaming up with her long-lost son<\/word>","<word>take down the Farm<\/word>","<word>organ harvesting cult<\/word>","<word>live-in relationship with FP<\/word>","<word>man she loves<\/word>","<phrase>One of <strong data-readahead=\"Alice's greatest kept secrets\" class=\"presentation_word\">Alice's greatest kept secrets<\/strong> was that she is a <strong data-readahead=\"member\" class=\"presentation_word\">member<\/strong> of the <strong data-readahead=\"Southside Serpents\" class=\"presentation_word\">Southside Serpents<\/strong>. <strong data-readahead=\"Following her arrest\" class=\"presentation_word\">Following her arrest<\/strong>, she <strong data-readahead=\"severed all ties with the gang\" class=\"presentation_word\">severed all ties with the gang<\/strong>, and erased, or at least thought to have <strong data-readahead=\"erased every article of her arrest\" class=\"presentation_word\">erased every article of her arrest<\/strong> from the system archives. She <strong data-readahead=\"worked for the FBI\" class=\"presentation_word\">worked for the FBI<\/strong>, <strong data-readahead=\"teaming up with her long-lost son\" class=\"presentation_word\">teaming up with her long-lost son<\/strong> to <strong data-readahead=\"take down the Farm\" class=\"presentation_word\">take down the Farm<\/strong>, an <strong data-readahead=\"organ harvesting cult\" class=\"presentation_word\">organ harvesting cult<\/strong>. She is currently in a <strong data-readahead=\"live-in relationship with FP\" class=\"presentation_word\">live-in relationship with FP<\/strong>, the <strong data-readahead=\"man she loves\" class=\"presentation_word\">man she loves<\/strong>.<\/phrase>"];
	var currentPosition = 0;
	var totalPositions = 0;
	var timePerWord = 1500;
	var timePerPhraseWord = 120
	var readAheadPlayerTimer;
	var autoPlay = true;
	var setMinimized = false;

	var wordSpeedOptions = {'Slower':2000,'Moderate':1200,'Fast':800};
	var phraseSpeedOptions = {'Slower':280,'Moderate':200,'Fast':80};
	var defaultWordSpeedOption = 'Moderate';
	var defaultPhraseSpeedOption = 'Moderate';
	var logToLTI = false;

	$(window).load(function(){
		totalPositions = presentation.length;
		if (totalPositions > 0){
			$('body').prepend('<div id="read_ahead_player_back"></div>');
			$('body').prepend('<div id="read_ahead_player"></div>');
			$('#read_ahead_player').prepend('<div id="read_ahead_player_field" class="read_ahead_word_section"></div>');
			initializeReadAheadControls();
			initializeReadAheadSlider();
			initializeReadAheadSpeedOptions();
			currentReadAheadControls();
			resumeReadAheadPlayback();
		}
	});

	$(document).keyup(function(e){
		switch(e.which) {
			case 37: 
				pauseReadAheadPresentation();
				priorReadAheadPresentationItem();
				break;
			case 39:
				pauseReadAheadPresentation();
				nextReadAheadPresentationItem();
				break;
			default:
				break;
		}

	});

	function initializeReadAheadControls(){
		var s = '';
		s += '<a href="javascript:void(0)" onclick="read_ahead_switch_min_max(true);" id="read_ahead_player_max_min" class="player-icons" aria-label="minimize/maximize player">';
		s += '<span class="fa-stack fa-lg " aria-hidden><i class="fa fa-circle fa-stack-2x"></i><i class="fa fa-minus fa-stack-1x fa-inverse"></i></span>';
		s += '</a>';
		s += '<div id="read_ahead_controls">';
		s += '<a href="javascript:void(0)" onclick="priorReadAheadPresentationItem()" id="read_ahead_player_previous_word" class="player-icons" aria-label="previous keyword">';
		s += '<span class="fa-stack fa-lg " aria-hidden><i class="fa fa-circle fa-stack-2x"></i><i class="fa fa-backward fa-stack-1x fa-inverse"></i></span>';
		s += '</a>';
		s += '<a href="javascript:void(0)" onclick="pauseReadAheadPresentation()" id="read_ahead_player_pause_play" class="player-icons" aria-label="play/pause">';
		s += '<span class="fa-stack fa-lg " aria-hidden><i class="fa fa-circle fa-stack-2x"></i><i class="fa fa-pause fa-stack-1x fa-inverse"></i></span>';
		s += '</a>';
		s += '<a href="javascript:void(0)" onclick="nextReadAheadPresentationItem()" id="read_ahead_player_next_word" class="player-icons" aria-label="next keyword">';
		s += '<span class="fa-stack fa-lg " aria-hidden><i class="fa fa-circle fa-stack-2x"></i><i class="fa fa-forward fa-stack-1x fa-inverse"></i></span>';
		s += '</a>';
		s += '</div>';
		$('#read_ahead_player').append(s);
	}

	function initializeReadAheadSlider(){
		var s = '';
		s += '<div class="read_ahead_slider" id="readAheadSlider">';
		s += '<div class="read_ahead_slider_bar" id="readAheadSliderBar"></div>';
		s += '</div>';
		$('#read_ahead_controls').prepend(s);
		updateReadAheadSliderPosition();
	}

	function initializeReadAheadSpeedOptions(){
		var s = '<div id="read_ahead_player_options">';
		s += '<div class="slider_control" id="slider_control_word_speed">';
		s += ' Word Speed<br/>';
		s += '<div class="slider_bar">';
		optionCount = 0;
		for (index in wordSpeedOptions) { optionCount++; }
		optionWidth = 100 / optionCount;
		for (index in wordSpeedOptions) {
			var option = wordSpeedOptions[index];
			if (index == defaultWordSpeedOption) {
				s += '<a href="javascript:void(0)" id="slider_control_word_speed_'+option+'" onclick="updateReadAheadWordSpeed('+option+',this)" style="width:'+optionWidth+'%;" title="'+index+'" data-speed="'+option+'" class="current_speed" aria-label="'+index+'"></a>';
				updateReadAheadWordSpeed(option);
			} else {
				s += '<a href="javascript:void(0)" id="slider_control_word_speed_'+option+'" onclick="updateReadAheadWordSpeed('+option+',this)" style="width:'+optionWidth+'%;" title="'+index+'" data-speed="'+option+'" aria-label="'+index+'"></a>';
			}
		}
		s += '</div>';
		s += '</div>';
		s += '<div class="slider_control" id="slider_control_phrase_speed">';
		s += ' Phrase Speed<br/>';
		s += '<div class="slider_bar">';
		optionCount = 0;
		for (index in phraseSpeedOptions) { optionCount++; }
		optionWidth = 100 / optionCount;
		for (index in phraseSpeedOptions) {
			var option = phraseSpeedOptions[index];
			if (index == defaultWordSpeedOption) {
				s += '<a href="javascript:void(0)" id="slider_control_phrase_speed_'+option+'" onclick="updateReadAheadPhraseSpeed('+option+',this)" style="width:'+optionWidth+'%;" title="'+index+'" data-speed="'+option+'" class="current_speed" aria-label="'+index+'"></a>';
				updateReadAheadPhraseSpeed(option);
			} else {
				s += '<a href="javascript:void(0)" id="slider_control_phrase_speed_'+option+'" onclick="updateReadAheadPhraseSpeed('+option+',this)" style="width:'+optionWidth+'%;" title="'+index+'" data-speed="'+option+'" aria-label="'+index+'"></a>';
			}
		}
		s += '</div>';
		s += '</div>';
		s += '</div>';
		$('#read_ahead_controls').append(s);
	}

	function updateReadAheadWordSpeed(microseconds,sender) {
		microseconds = microseconds != undefined && microseconds > 0 ? microseconds : 0;
		if (microseconds > 0) { timePerWord = microseconds; }
		if (sender!=undefined) { 
			$('#slider_control_word_speed').find('a').removeClass('current_speed');
			$(sender).addClass('current_speed');
		}
		logReadAheadPlayerAction('updateReadAheadWordSpeed','Presentation',microseconds);
	}

	function updateReadAheadPhraseSpeed(microseconds,sender) {
		microseconds = microseconds != undefined && microseconds > 0 ? microseconds : 0;
		if (microseconds > 0 ) { timePerPhraseWord = microseconds; }
		if (sender!=undefined) { 
			$('#slider_control_phrase_speed').find('a').removeClass('current_speed');
			$(sender).addClass('current_speed');
		}
		logReadAheadPlayerAction('updateReadAheadPhraseSpeed','Presentation',microseconds);
	}

	function updateReadAheadSliderPosition(){
		var currentSliderBarWidth = 100 - (100 / totalPositions * (currentPosition + 1));
		$('#readAheadSliderBar').css('width',currentSliderBarWidth+'%');
	}

	function currentReadAheadControls(){
		$('#read_ahead_player_pause_play').show();
		if (currentPosition < totalPositions - 1)	{
			$('#read_ahead_player_next_word').removeClass('disabled');
		} else {
			$('#read_ahead_player_next_word').addClass('disabled');
		}
		if (currentPosition > 0) {
			$('#read_ahead_player_previous_word').removeClass('disabled');
		} else {
			$('#read_ahead_player_previous_word').addClass('disabled');
		}
	}

	function restartReadAheadPresentation(){
		currentPosition = 0;
		logReadAheadPlayerAction('restartReadAheadPresentation','Presentation','');
		resumeReadAheadPlayback();
	}

	function resumeReadAheadPlayback(){
		$('.fa-repeat').removeClass('fa-repeat').addClass('fa-play');
		$('#read_ahead_player_pause_play').each(function(){
			$(this).find('.fa-play').removeClass('fa-play').addClass('fa-pause');
			$(this).off('click');
			$(this).attr('onclick','pauseReadAheadPresentation()');
		});
		logReadAheadPlayerAction('resumeReadAheadPlayback','Presentation','');
		playReadAheadPresentation();
	}

	function pauseReadAheadPresentation(){
		$('#read_ahead_player_pause_play').each(function(){
			$(this).find('.fa-pause').removeClass('fa-pause').addClass('fa-play');
			$(this).off('click');
			$(this).attr('onclick','resumeReadAheadPlayback()');
		});
		logReadAheadPlayerAction('pauseReadAheadPresentation','Presentation','');
		read_ahead_pause();
	}

	function endReadAheadPresentation(){
		$('.fa-play').removeClass('fa-play').addClass('fa-repeat');
		$('.fa-pause').removeClass('fa-pause').addClass('fa-repeat');
		$('#read_ahead_player_pause_play').each(function(){
			$(this).off('click');
			$(this).attr('onclick','restartReadAheadPresentation()');
		});
		logReadAheadPlayerAction('endReadAheadPresentation','Presentation','');
		logLTIEndPresentation();
	}

	function playReadAheadPresentation(){
		autoPlay=true;
		currentPosition--;
		logReadAheadPlayerAction('playReadAheadPresentation','Presentation','');
		nextReadAheadPresentationItem(); 
	}

	function startReadAheadStepper(timeDisplayWord){
		clearInterval(readAheadPlayerTimer);
		readAheadPlayerTimer = setTimeout(function() { read_ahead_step(); },timeDisplayWord);
	}

	function stopReadAheadStepper(){
		clearInterval(readAheadPlayerTimer);
	}

	function read_ahead_step(){
		if (autoPlay) {
			nextReadAheadPresentationItem();
		}
	}

	function read_ahead_pause(){
		autoPlay=false;
		stopReadAheadStepper();
	}

	function showReadAheadPresentationItem(index){
		currentPosition = index;
		currentPresentationItem = presentation[currentPosition] != undefined ? presentation[currentPosition].trim() : "";
		if (currentPresentationItem != "") {
			currentItemWordCount = presentation[currentPosition].replace("\n","").split(" ").length;
			if (currentPresentationItem.startsWith("<word>")){
				startReadAheadStepper(currentItemWordCount*timePerWord);
				$('#read_ahead_player_field').html('<div class="read_ahead_word" style="display:block;">'+currentPresentationItem+'</div>');
				logReadAheadPlayerAction('showReadAheadPresentationItem','Word',currentPresentationItem);
		
			} else {
				startReadAheadStepper(currentItemWordCount*timePerPhraseWord);
				$('#read_ahead_player_field').html('<div class="read_ahead_text_box" style="display:block;"><div class="read_ahead_text">'+currentPresentationItem.replace("\n","<br />")+'</div></div>');
				logReadAheadPlayerAction('showReadAheadPresentationItem','Phrase','');
		
			}
		} else {
			if (currentPosition < totalPositions) {
				nextReadAheadPresentationItem();
			} else {
				endReadAheadPresentation();
				read_ahead_minimize();
			}
		}
		currentReadAheadControls();
		updateReadAheadSliderPosition();
		saveReadAheadPosition();
	}

	function priorReadAheadPresentationItem(){
		stopReadAheadStepper();
		logReadAheadPlayerAction('priorReadAheadPresentationItem','Controls','');
		showReadAheadPresentationItem(currentPosition-1);
	}


	function nextReadAheadPresentationItem(){
		stopReadAheadStepper();
		logReadAheadPlayerAction('nextReadAheadPresentationItem','Controls','');
		showReadAheadPresentationItem(currentPosition+1);
	}

	function read_ahead_playAgain(){
		currentWordIndex = 0;
		logReadAheadPlayerAction('read_ahead_playAgain','Controls','');
		playReadAheadPresentation();
	}


	function read_ahead_minimize(){
		setMinimized = true;
		logReadAheadPlayerAction('read_ahead_minimize','Controls','');
		read_ahead_switch_min_max();
	}

	function read_ahead_maximize(){
		setMinimized = false;
		logReadAheadPlayerAction('read_ahead_maximize','Controls','');
		read_ahead_switch_min_max();
	}

	function read_ahead_switch_min_max(forceSwitch){
		forceSwitch = forceSwitch != undefined ? forceSwitch : false;
		if (forceSwitch) { setMinimized = !setMinimized; }

		if (setMinimized) {
			$('#read_ahead_player_back').fadeOut();
			$('#read_ahead_player').addClass('minimize');
			$('.player-icons .fa-stack').removeClass('fa-lg').addClass('fa-sm');
			$('.player-icons .fa-minus').removeClass('fa-minus').addClass('fa-expand');
			logReadAheadPlayerAction('read_ahead_switch_min_max','Min','');
			//$('#read_ahead_player_max_min').each(function(){
			//	$(this).off('click');
			//	$(this).attr('onclick','read_ahead_maximize()');
			//});
		} else {
			$('#read_ahead_player_back').fadeIn();
			$('#read_ahead_player').removeClass('minimize');
			$('.player-icons .fa-stack').removeClass('fa-sm').addClass('fa-lg');
			$('.player-icons .fa-expand').removeClass('fa-expand').addClass('fa-minus');
			logReadAheadPlayerAction('read_ahead_switch_min_max','Max','');
			//$('#read_ahead_player_max_min').each(function(){
			//	$(this).off('click');
			//	$(this).attr('onclick','read_ahead_minimize()');
			//});
		}

	}

	function saveReadAheadPosition(){
		$.ajax({
			type:'POST',
			url:'/ajax/save_user_presentation_position.php',
			data: { 'id':2494,
					'position': currentPosition
				}
		})
		.done(function(results){
		})
		.fail(function( jqXHR, textStatus ) {
			alert( "Request failed: " + textStatus );
		});

	}

	function logLTIEndPresentation(action) {
		if (!logToLTI) {
			return;
		}

		$.ajax({
			type:'POST',
			url:'/lti/presentationEnded.php',
			data: { 'documentId':2494,
					'userId':0,
				}
		})
	}

	function logReadAheadPlayerAction(action,area,details){
		var d = new Date();
		var t = d.getTime();
		action = action != undefined ? action.trim() : 'UNKNOWN';
		area = area != undefined ? area.trim() : '';
		details = details != undefined ? details : '';

		// If we are about to show a new word, increase the number of keywords
		// reinforced so we can log that for the Dashboard page.
		if (area == 'Word') {
			window.keywordCount++;
		}

		$.ajax({
			type:'POST',
			url:'/logging/logPlayerAction.php',
			data: { 'documentId':2494,
					'userId':0,
					'playerAction':action,
					'playerArea':area,
					'details':details,
					'timestamp': t
				}
		})
		.done(function(results){
		})
		.fail(function( jqXHR, textStatus ) {
			alert( "Request failed: " + textStatus );
		});

	}