/* Format prices according to language */
/* @autor Martin Nachev (22.01.2014) */
/* @idea  Google.bg: javascript split string every 3 characters at right */
function format_price( value, noDecimal ) {
	var dec           = 2;
	var value         = parseFloat(value).toFixed( dec ); // String
	var noDecimal     = typeof noDecimal == "boolean" ? noDecimal : false;


	var decSep        = SymexChartGlobals.language == "en" ? "." : ",";
	var thousSep      = SymexChartGlobals.language == "en" ? " " : ".";
	var v             = parseInt( value ) + ""; // String - main number part
	var firstGroupLen = v.length % 3; // only first group could be less than 3 digits

	var f = v.substring( firstGroupLen ).match( new RegExp( ".{3}", "g" ) ) || []; // Array !!!
	if ( firstGroupLen > 0 ) {
		f.unshift( v.substring( 0, firstGroupLen ) );
	}

	var formatted = f.join( thousSep );
	if ( noDecimal == false ) {
		formatted += decSep + value.match( new RegExp( "[0-9]+$" ) )[0];
	}

	return formatted;
}


function getURLParam()
{
	var returnObject = {};
	var href = document.location.href;
	if ( href.indexOf("?") > -1 )
	{
		var param = href.substr(href.indexOf("?") + 1);
		var arrayParam = param.split("&");
		for ( var i = 0; i < arrayParam.length; i++ )
		{
			var value = arrayParam[i].split("=");
			returnObject[value[0]] = value[1];
		}
	}
	return returnObject;
}


function array_max( arr, x1, x2 )
{
	var max_ = null;

	for( var i = x1; i < x2; i++ ) {
		if ( arr[i] && ( max_ === null || arr[i] > max_ ) ) {
			max_ = arr[i];
		}
	}

	return max_;
}


function array_min( arr, x1, x2 )
{
	var min_ = null;

	for( var i = x1; i < x2; i++ ) {
		if ( arr[i] && ( min_ === null || arr[i] < min_ ) ) {
			min_ = arr[i];
		}
	}

	return min_;
}


function get_first_quote( arr, x1, x2 )
{
	for( var i = x1; i <= x2; i++ )
	{
		if (arr[i]) return arr[i];
	}

	return null;
}


//convert date format: YYYY-mm-dd HH:ii:ss => dd/mm/YYYY
function date_eu(d){
	var date_ = '';
	if(typeof SymexChartSettings.lang_array[41] == "undefined"){var separateur = '/';}else{var separateur = SymexChartSettings.lang_array[41];}

	if(typeof SymexChartSettings.settings[13] == "undefined"){
		if(SymexChartGlobals.language == "en"){
			if ( SymexChartGlobals.period_type == 'intra' )
			{
				date_ = d.substr(5,2) + separateur + d.substr(8,2) + ' ' + d.substr(11,2) + ':' + d.substr(14,2) ;
			}
			if ( SymexChartGlobals.period_type == 'week' )
			{
				date_ = d.substr(5,2) + separateur + d.substr(8,2) + ' ' + d.substr(11,2) + ':' + d.substr(14,2) ;
			}
		}else{
			if ( SymexChartGlobals.period_type == 'intra' )
			{
				date_ = d.substr(8,2) + separateur + d.substr(5,2) + ' ' + d.substr(11,2) + ':' + d.substr(14,2) ;
			}
			if ( SymexChartGlobals.period_type == 'week' )
			{
				date_ = d.substr(8,2) + separateur+ d.substr(5,2) + ' ' + d.substr(11,2) + ':' + d.substr(14,2) ;
			}
		}
	}else{
		date_ = SymexChartSettings.settings[13];
		date_ = date_.replace("d", d.substr(8,2));
		date_ = date_.replace("m", d.substr(5,2));
		date_ = date_.replace("Y", d.substr(0,4));
		date_ = date_.replace("H", d.substr(11,2));
		date_ = date_.replace("i", d.substr(14,2));
	}	
	return date_;
}

function show_period( x1_, x2_ )
{
	if ( x2_ == SymexChartGlobals.points_qty ) { x2_ = SymexChartGlobals.points_qty - 1; }
	//from
	var period = SymexChartSettings.lang_array[20] + date_eu( data_date[x1_] ) + ' ';
	//to
	period += SymexChartSettings.lang_array[21] + date_eu( data_date[x2_] );
	jQuery('#period_info').html( period );
}

function show_header( x1_, x2_ )
{
	//if ( x2_ == SymexChartGlobals.points_qty ) { x2_ = SymexChartGlobals.points_qty - 1; }
	x2_ = SymexChartGlobals.points_qty;
	var variation =  (data_close_0[x2_] / veille_min_max[0]-1)*100 ;
	if(variation < 0){
		var class_var = "down";
		var img_var ="-";
	}else{
		var class_var = "up";
		var img_var ="+";
	}

	var period = "<span class=\"img_header\"><img src=\"/settings/image/fleche"+img_var +".gif\"/></span>";
	period  += "<span class=\"var_header " + class_var + "\">";

	//if(SymexChartGlobals.language !="en"){
	variation = variation.toFixed(2).replace(".",",");
	//}
	period  += variation + "%</span>";
	//if(SymexChartGlobals.language !="en"){
		var close = data_close_0[x2_].toFixed(2).replace(".",",");
	//}
	period  += "<span class=\"close_header\">" + close  + "</span>";

	jQuery('#head_close').html( period );
}

function drawLine( x1_, x2_ ){

	// Override global var begin
	SymexChartGlobals.begin = x1_;

	x2_ = x2_ +1;

	// Quantity of points to be draw for each ticker -> Local var (note we have global one!)
	var points_qty = x2_ - x1_;

	// Conteiner for canvas elements
	var canvas_ = new Array();

	// Add all canvas element in
	for(var i = 0; i < SymexChartGlobals.tickers_qty; i++ ){
		canvas_[i] = document.getElementById('price_' + i);
	}

	// Ff canvas container is ready
	if (canvas_[0].getContext)
	{

		var context_ = new Array(); //2D plots container
		var coefStepY;
		var init_positionY;
		var stepY;
		var tmp_val;
		var init_quotes = new Array(); // Collect first quote for each ticker

		//get all 2D plots
		for(var i = 0; i < SymexChartGlobals.tickers_qty; i++ ){
			context_[i] = canvas_[i].getContext('2d');
		}

		// set global max / min for each ticker
		// my secret => toFixed(1) => good digits after decimal separator
		for( var w = 0; w < SymexChartGlobals.tickers_qty; w++ )
		{
			init_quotes[w] = get_first_quote(eval('data_close_' + w), x1_, x2_);

			SymexChartGlobals.max_[w] = array_max( eval('data_close_' + w), x1_, x2_ );
			SymexChartGlobals.min_[w] = array_min( eval('data_close_' + w), x1_, x2_ );

			// Check if highest dot for a secondary ticker is higher then this of main ticker
			var check_max = ( SymexChartGlobals.max_[w] / init_quotes[w] ) * init_quotes[0];
			if (SymexChartGlobals.max_[0] < check_max) SymexChartGlobals.max_[0] = check_max;

			// Check if lowest dot for a secondary ticker is lower then this of main ticker
			var check_min = ( SymexChartGlobals.min_[w] / init_quotes[w] ) * init_quotes[0];
			if (SymexChartGlobals.min_[0] > check_min) SymexChartGlobals.min_[0] = check_min;
		}

		// Take in mind veille values
		for (var itveill = 0; itveill < veille_min_max.length; itveill++)
		{
			if (SymexChartGlobals.max_[0] < veille_min_max[itveill]) SymexChartGlobals.max_[0] = veille_min_max[itveill];
			if (SymexChartGlobals.min_[0] > veille_min_max[itveill]) SymexChartGlobals.min_[0] = veille_min_max[itveill];
		}

		// Recalculate max / min for good `Y` scale
		//console.log( "brut max " + SymexChartGlobals.max_[0] );
		var values_scale_data = values_scale(SymexChartGlobals.max_[0], SymexChartGlobals.min_[0]);
		SymexChartGlobals.max_[0] = values_scale_data[0];
		SymexChartGlobals.min_[0] = values_scale_data[1];
		//console.log( SymexChartGlobals.max_[0] );
		SymexChartSettings.settings[0] = values_scale_data[2];

		// Distance between two points in 'X' axis -> override global
		//SymexChartGlobals.stepX = (SymexChartGlobals.chart_width - 1) / (points_qty - 1);
		SymexChartGlobals.stepX = (SymexChartGlobals.chart_width) / (points_qty - 1);

		// Distance between two points in 'Y' axis (based on main tickers!)
		coefStepY = (SymexChartGlobals.max_[0] - SymexChartGlobals.min_[0]) / SymexChartGlobals.chart_height;

		if ( SymexChartGlobals.mountain == 1 ){
			var lingrad = context_[0].createLinearGradient( 0, 0, SymexChartGlobals.chart_width, 0 );
			lingrad.addColorStop( 0, SymexChartSettings.colors_[21] ); //6699cc
			lingrad.addColorStop( 1, SymexChartSettings.colors_[22] );
		}

		//loop for each ticker
		for ( var i = 0; i < SymexChartGlobals.tickers_qty; i++ )
		{
			// Set init position => same for all tickers => depends to main ticker
			init_positionY = (SymexChartGlobals.max_[0] - init_quotes[0]) / coefStepY;

			//init drawing process
			context_[i].beginPath();
			context_[i].moveTo( 1, init_positionY );

			//loop for each quotation
			var iter = 0; //count steps
			for ( var i_ = x1_ + 1; i_ <= x2_; i_++ ) //+1 => because 0 point is set with moveTo
			{
				//if empty point (no quotation for current date)
				if ( ! eval('data_close_' + i + '[i_]') ) {
					iter++;
					continue;
				}

				if (i > 0)
				{
					var formula_convert;

					formula_convert  = 'tmp_val' + ' = ';
					formula_convert += '(data_close_' + i + '[i_] / ';
					formula_convert += get_first_quote( eval('data_close_' + i), x1_, x2_)+ ') * ';
					formula_convert += get_first_quote( data_close_0, x1_, x2_ );

					eval(formula_convert);
				}
				else {
					tmp_val = data_close_0[i_]; // Current value for main ticker
				}

				// Calculate next 'Y' axis position
				stepY =  (SymexChartGlobals.max_[0] - tmp_val)  / coefStepY;

				// Draw line
				context_[i].lineTo( (SymexChartGlobals.stepX * (iter + 1)).toFixed(2), stepY.toFixed(2) );

				//remember last dot coords of main ticker => for mountain
				if ( i == 0 ) { var last_dot_main = (SymexChartGlobals.stepX * (iter + 1)).toFixed(2); }

				iter++;
			}

			//finish drawing process for current ticker
			context_[i].strokeStyle = SymexChartSettings.colors_[i];
			context_[i].lineWidth = SymexChartSettings.linesW_[i];
			context_[i].stroke();

		}

		if ( SymexChartGlobals.mountain == 1 ){
			context_[0].lineTo( last_dot_main, SymexChartGlobals.chart_height );
			context_[0].lineTo( 0, SymexChartGlobals.chart_height );
			context_[0].lineTo( 0, init_positionY );
			context_[0].fillStyle = lingrad;
			context_[0].fill();
		}

	} //if canvas */

} //end func


function drawLine_2()
{

	//get canvas element
	var canvas_sum = document.getElementById('summary_0');

	//if canvas is ready
	if (canvas_sum.getContext){

		//get all 2D plots
		context_sum = canvas_sum.getContext('2d');

		var coefStepY;
		var init_positionY;
		var stepY;

		var lingrad = context_sum.createLinearGradient( 0, 0, SymexChartGlobals.chart_width, 0 );
		lingrad.addColorStop( 0, SymexChartSettings.colors_[23] );
		lingrad.addColorStop( 1, SymexChartSettings.colors_[24] );

		//MAX / MIN => calculate in function above, which is called before this one!!!
		//distance between two points in 'Y' axis
		coefStepY = (SymexChartGlobals.max_[0] - SymexChartGlobals.min_[0]) / SymexChartGlobals.chart_sum_height;

		// Set init position => same for all tickers => depends to main ticker
		init_positionY = (SymexChartGlobals.max_[0] - get_first_quote(data_close_0, 0, (SymexChartGlobals.points_qty - 1))) / coefStepY;

		//init drawing process
		context_sum.beginPath();
		context_sum.moveTo( 1, init_positionY );

		//loop for each quotation
		var iter = 0; //count steps
		for ( var i_ = 1; i_ < data_date.length; i_++ )
		{
			//if empty point (no quotation for current date)
			if ( ! data_close_0[i_] ) {
				iter++;
				continue;
			}

			//calculate next 'Y' axis position
			stepY =  (SymexChartGlobals.max_[0] - data_close_0[i_])  / coefStepY ;
			context_sum.lineTo( (SymexChartGlobals.stepX * (iter + 1)).toFixed(2), stepY.toFixed(2) );

			iter++;
		}

		//finish drawing process for current ticker
		context_sum.strokeStyle = SymexChartSettings.colors_[20];
		context_sum.lineWidth = SymexChartSettings.linesW_[20];
		context_sum.stroke();


		context_sum.lineTo( (SymexChartGlobals.stepX * iter).toFixed(2), SymexChartGlobals.chart_sum_height );
		context_sum.lineTo( 0, SymexChartGlobals.chart_sum_height );
		context_sum.lineTo( 0, init_positionY );
		context_sum.fillStyle = lingrad;
		context_sum.fill();

	} //if canvas */

} //end func


function drawVolumes( x1_, x2_ ) {

	// Override begin
	SymexChartGlobals.begin = x1_;

	// Quantity of points to be draw for each ticker => OVERRIDE GLOBAL
	var points_qty = x2_ - x1_;

	var volData = {

		_min: null,
		_max: null,
		_ampl: null,
		_sum: null,
		_average: null,
		_highest: null,
		_lowest: null,

		min: function() {

			if ( volData._min === null ) {

				volData._min = 0;
			}

			return volData._min;
		},
		max: function() {

			if ( volData._max === null ) {

				volData._max = array_max( data_vol_0, x1_, x2_ );
			}

			return volData._max;
		},
		ampl: function() {

			if ( volData._ampl === null ) {

				volData._ampl = volData.max() - volData.min();
			}

			return volData._ampl;
		},
		sum: function() {

			if ( volData._sum === null ) {

				var total = 0;

				for ( var i = x1_; i <= x2_; i ++ ) {

					if ( data_vol_0[ i ] ) {

						total += Math.round( data_vol_0[ i ] );
					}
				}

				volData._sum = total;
			}

			return volData._sum;
		},
		average: function() {

			if ( volData._average === null ) {

				volData._average = Math.round( ( volData.sum() - volData.max() ) / ( points_qty - 1 ) );
			}

			return volData._average;
		},
		highest: function() {

			if ( volData._highest === null ) {

				// Old method
				// volData._highest = volData.average() * 2;

				var tmp = data_vol_0.slice( 0 );

				tmp.sort( function( a, b ) {
					return b - a;
				});

				if ( tmp.length > 1 ) {

					volData._highest = Math.round( tmp[ 1 ] );
				}
				else {

					volData._highest = tmp.length ? Math.round( tmp[ 0 ] ) : null;
				}
			}

			return volData._highest;
		},
		lowest: function() {

			if ( volData._lowest === null ) {

				// Old method
				// var tmp = volData.highest();
				// for ( var i = x2_; i >= x1_; i -- ) {
				// if ( data_vol_0[ i ] > 0 && data_vol_0[ i ] < tmp ) {
				// tmp = data_vol_0[ i ];
				// }
				// }
				// volData._lowest = tmp;

				volData._lowest = 0;
			}

			return volData._lowest;
		}
	};

	// Debug
	// alert( volData.highest() + ' :: ' + volData.lowest() );

	// Conteiner for canvas elements
	var canvas_ = document.getElementById( 'volume_0' );

	// Canvas container is ready
	if ( canvas_.getContext ) {

		// 2D plot container
		var context_ = canvas_.getContext( '2d' );

		// Distance between two points in 'X' axis ( override global )
		SymexChartGlobals.stepX = ( SymexChartGlobals.chart_width - 1 ) / ( points_qty - 1 );

		var maxVolume = volData.max();
		var minVolume = volData.min();

		if( SymexChartSettings.intraVolumesRelative === true ) {

			maxVolume = volData.highest();
			minVolume = volData.lowest();
		}

		// Distance between two points in 'Y' axis
		var coefStepY = ( maxVolume - minVolume ) / SymexChartGlobals.chart_vol_height;
		var stepY;
		var iter = 0; // count steps
		var tmpSet = SymexChartSettings;
		var lineWidth = tmpSet.linesW_[ 0 ];

		while ( lineWidth >= SymexChartGlobals.stepX && lineWidth > 1 ) {

			lineWidth -= 1;
		}

		// Debug
		// Tutorials: javascript canvas draw dotted line

		for ( var i_ = x1_; i_ <= x2_; i_++ ) {

			var currentVol = data_vol_0[ i_ ];

			// If empty point (no quotation for current date)
			if ( ! currentVol || currentVol < minVolume ) {

				iter++;
				continue;
			}

			context_.setLineDash( [] );

			if ( currentVol > maxVolume ) {

				currentVol = maxVolume;
				context_.setLineDash( [2, 2] );
			}

			context_.beginPath();

			// calculate next 'Y' axis position
			stepY =  ( maxVolume - currentVol )  / coefStepY;

			// if (stepY > 49.9) stepY = 49.9; // Agains bug in IE browsers
			context_.moveTo( ( SymexChartGlobals.stepX * iter + 1 ).toFixed( 2 ), stepY.toFixed( 2 ) );
			context_.lineTo( (SymexChartGlobals.stepX * iter + 1).toFixed(2), SymexChartGlobals.chart_vol_height );

			iter++;

			// Finalize the current shape in the canvas
			context_.strokeStyle = tmpSet.colors_[ 25 ] ? tmpSet.colors_[ 25 ] : tmpSet.colors_[ 0 ];
			context_.lineWidth = lineWidth;
			context_.stroke();
		}
	}
}


function values_scale(max_, min_)
{
	var amplitude = max_ - min_;
	var distance;

	if (amplitude <= 0.01) { distance = 0.002; }
	else if (amplitude <= 0.05) { distance = 0.01; }
	else if (amplitude <= 0.1) { distance = 0.02; }
	else if (amplitude <= 0.5) { distance = 0.1; }
	else if (amplitude <= 1) { distance = 0.2; }
	else if (amplitude <= 2) { distance = 0.5; }
	else if (amplitude <= 5) { distance = 1; }
	else if (amplitude <= 10) {	distance = 2;	}
	else if (amplitude <= 20) {	distance = 4;	}
	else if (amplitude <= 50) {	distance = 10; }
	else if (amplitude <= 100) { distance = 20; }
	else if (amplitude <= 200) { distance = 40; }
	else if (amplitude <= 300) { distance = 60; }
	else if (amplitude <= 400) { distance = 80; }
	else if (amplitude <= 500) { distance = 100; }
	else if (amplitude <= 600) { distance = 120; }
	else if (amplitude <= 700) { distance = 140; }
	else if (amplitude <= 800) { distance = 160; }
	else if (amplitude <= 900) { distance = 180; }
	else if (amplitude <= 1000) { distance = 200; }
	else if (amplitude <= 1100) { distance = 220; }
	else if (amplitude <= 1200) { distance = 240; }
	else if (amplitude <= 1400) { distance = 280; }
	else if (amplitude <= 1600) { distance = 320; }
	else if (amplitude <= 1800) { distance = 360; }
	else if (amplitude <= 2000) { distance = 400; }
	else if (amplitude <= 2400) { distance = 480; }
	else if (amplitude <= 2800) { distance = 560; }
	else if (amplitude <= 3200) { distance = 640; }
	else if (amplitude <= 4000) { distance = 800; }
	else if (amplitude <= 8000) { distance = 1600; }
	else if (amplitude <= 16000) { distance = 3200; }
	else if (amplitude <= 32000) { distance = 6400; }
	else if (amplitude <= 64000) { distance = 12800; }
	else if (amplitude <= 128000) { distance = 25600; }
	else { distance = 30000; }

	/* If we need to increase distace define next var in customer's css file! */
	/*if (typeof SymexChartYdistaceCoef == "number") {
	distance *= SymexChartYdistaceCoef;
	}*/

	var max_scale = Math.round(max_ / distance);
	var min_scale = Math.round(min_ / distance);

	if ((max_scale * distance) <= max_) {
		max_scale = (max_scale + 1) * distance;
	}
	else {
		max_scale = max_scale * distance;
	}

	if ((min_scale * distance) >= min_) { // `>` instead of `>=` else min scale value will be always less then 0
		min_scale = (min_scale - 1) * distance;
	}
	else {
		min_scale = min_scale * distance;
	}

	//if max_ or min_ is equal to the top or bottom line, we shift the element of 1 distance
	if( Math.round( max_scale * 100 ) == Math.round( max_ * 100 ) ){
		max_scale = max_scale + distance;
	} 
	if( Math.round( min_scale * 100 ) == Math.round( min_ * 100 ) ){
		min_scale = min_scale - distance;
	} 

	min_ = min_scale;
	max_ = max_scale;
	var nhl = Math.round((max_scale - min_scale) / distance);
	if (nhl < 2) nhl = 2;

	/* If we need to controll number of labes in scale Y - define next var in customer's css file! */
	if (typeof SymexChartYdistaceCoef == "number" && SymexChartYdistaceCoef > 0) {
		var scaleYration = nhl / SymexChartYdistaceCoef;
		distance *= scaleYration;
		nhl = SymexChartYdistaceCoef;
	}

	return [max_, min_, nhl, distance];
}