<?php
/**
 * WC_Report_Sales_By_Date
 *
 * @author      WooThemes
 * @category    Admin
 * @package     WooCommerce/Admin/Reports
 * @version     2.1.0
 */
class WC_Report_Sales_By_Date extends WC_Admin_Report {

	public $chart_colours = array();
	private $report_data;

	/**
	 * Get report data
	 * @return array
	 */
	public function get_report_data() {
		if ( empty( $this->report_data ) ) {
			$this->query_report_data();
		}
		return $this->report_data;
	}

	/**
	 * Get all data needed for this report and store in the class
	 */
	private function query_report_data() {
		$this->report_data = new stdClass;

		$this->report_data->order_counts = (array) $this->get_order_report_data( array(
			'data' => array(
				'ID' => array(
					'type'     => 'post_data',
					'function' => 'COUNT',
					'name'     => 'count',
					'distinct' => true,
				),
				'post_date' => array(
					'type'     => 'post_data',
					'function' => '',
					'name'     => 'post_date'
				)
			),
			'group_by'            => $this->group_by_query,
			'order_by'            => 'post_date ASC',
			'query_type'          => 'get_results',
			'filter_range'        => true,
			'order_types'         => wc_get_order_types( 'order-count' ),
			'order_status'        => array( 'completed', 'processing', 'on-hold', 'refunded' )
		) );

		$this->report_data->coupons = (array) $this->get_order_report_data( array(
			'data' => array(
				'order_item_name' => array(
					'type'     => 'order_item',
					'function' => '',
					'name'     => 'order_item_name'
				),
				'discount_amount' => array(
					'type'            => 'order_item_meta',
					'order_item_type' => 'coupon',
					'function'        => 'SUM',
					'name'            => 'discount_amount'
				),
				'post_date' => array(
					'type'     => 'post_data',
					'function' => '',
					'name'     => 'post_date'
				),
			),
			'where' => array(
				array(
					'key'      => 'order_items.order_item_type',
					'value'    => 'coupon',
					'operator' => '='
				)
			),
			'group_by'     => $this->group_by_query . ', order_item_name',
			'order_by'     => 'post_date ASC',
			'query_type'   => 'get_results',
			'filter_range' => true,
			'order_types'  => wc_get_order_types( 'order-count' ),
			'order_status' => array( 'completed', 'processing', 'on-hold', 'refunded' )
		) );

		// All items from orders - even those refunded
		$this->report_data->order_items = (array) $this->get_order_report_data( array(
			'data' => array(
				'_qty' => array(
					'type'            => 'order_item_meta',
					'order_item_type' => 'line_item',
					'function'        => 'SUM',
					'name'            => 'order_item_count'
				),
				'post_date' => array(
					'type'     => 'post_data',
					'function' => '',
					'name'     => 'post_date'
				),
			),
			'where' => array(
				array(
					'key'      => 'order_items.order_item_type',
					'value'    => 'line_item',
					'operator' => '='
				)
			),
			'group_by'            => $this->group_by_query,
			'order_by'            => 'post_date ASC',
			'query_type'          => 'get_results',
			'filter_range'        => true,
			'order_types'         => wc_get_order_types( 'order-count' ),
			'order_status'        => array( 'completed', 'processing', 'on-hold', 'refunded' ),
		) );

		/**
		 * Get total of fully refunded items.
		 */
		$this->report_data->refunded_order_items = absint( $this->get_order_report_data( array(
			'data' => array(
				'_qty' => array(
					'type'            => 'order_item_meta',
					'order_item_type' => 'line_item',
					'function'        => 'SUM',
					'name'            => 'order_item_count'
				)
			),
			'where' => array(
				array(
					'key'      => 'order_items.order_item_type',
					'value'    => 'line_item',
					'operator' => '='
				)
			),
			'query_type'          => 'get_var',
			'filter_range'        => true,
			'order_types'         => wc_get_order_types( 'order-count' ),
			'order_status'        => array( 'refunded' )
		) ) );

		/**
		 * Order totals by date. Charts should show GROSS amounts to avoid going -ve.
		 */
		$this->report_data->orders = (array) $this->get_order_report_data( array(
			'data' => array(
				'_order_total' => array(
					'type'     => 'meta',
					'function' => 'SUM',
					'name'     => 'total_sales'
				),
				'_order_shipping' => array(
					'type'     => 'meta',
					'function' => 'SUM',
					'name'     => 'total_shipping'
				),
				'_order_tax' => array(
					'type'     => 'meta',
					'function' => 'SUM',
					'name'     => 'total_tax'
				),
				'_order_shipping_tax' => array(
					'type'     => 'meta',
					'function' => 'SUM',
					'name'     => 'total_shipping_tax'
				),
				'post_date' => array(
					'type'     => 'post_data',
					'function' => '',
					'name'     => 'post_date'
				),
			),
			'group_by'            => $this->group_by_query,
			'order_by'            => 'post_date ASC',
			'query_type'          => 'get_results',
			'filter_range'        => true,
			'order_types'         => wc_get_order_types( 'sales-reports' ), // Orders, not refunds
			'order_status'        => array( 'completed', 'processing', 'on-hold', 'refunded' )
		) );

		/**
		 * If an order is 100% refunded we should look at the parent's totals, but the refunds dates.
		 * We also need to ensure each parent order's values are only counted/summed once.
		 */
		$this->report_data->full_refunds = (array) $this->get_order_report_data( array(
			'data' => array(
				'_order_total' => array(
					'type'     => 'parent_meta',
					'function' => '',
					'name'     => 'total_refund'
				),
				'_order_shipping' => array(
					'type'     => 'parent_meta',
					'function' => '',
					'name'     => 'total_shipping'
				),
				'_order_tax' => array(
					'type'     => 'parent_meta',
					'function' => '',
					'name'     => 'total_tax'
				),
				'_order_shipping_tax' => array(
					'type'     => 'parent_meta',
					'function' => '',
					'name'     => 'total_shipping_tax'
				),
				'post_date' => array(
					'type'     => 'post_data',
					'function' => '',
					'name'     => 'post_date'
				)
			),
			'group_by'            => 'posts.post_parent',
			'query_type'          => 'get_results',
			'filter_range'        => true,
			'order_status'        => false,
			'parent_order_status' => array( 'refunded' )
		) );

		/**
		 * Partial refunds. This includes line items, shipping and taxes. Not grouped by date.
		 */
		$this->report_data->partial_refunds = (array) $this->get_order_report_data( array(
			'data' => array(
				'ID' => array(
					'type'     => 'post_data',
					'function' => '',
					'name'     => 'refund_id'
				),
				'_refund_amount' => array(
					'type'     => 'meta',
					'function' => '',
					'name'     => 'total_refund'
				),
				'post_date' => array(
					'type'     => 'post_data',
					'function' => '',
					'name'     => 'post_date'
				),
				'order_item_type' => array(
					'type'      => 'order_item',
					'function'  => '',
					'name'      => 'item_type',
					'join_type' => 'LEFT'
				),
				'_order_total' => array(
					'type'     => 'meta',
					'function' => '',
					'name'     => 'total_sales'
				),
				'_order_shipping' => array(
					'type'     => 'meta',
					'function' => '',
					'name'     => 'total_shipping'
				),
				'_order_tax' => array(
					'type'     => 'meta',
					'function' => '',
					'name'     => 'total_tax'
				),
				'_order_shipping_tax' => array(
					'type'     => 'meta',
					'function' => '',
					'name'     => 'total_shipping_tax'
				),
				'_qty' => array(
					'type'            => 'order_item_meta',
					'function'        => 'SUM',
					'name'            => 'order_item_count',
					'join_type'       => 'LEFT'
				)
			),
			'group_by'            => 'refund_id',
			'order_by'            => 'post_date ASC',
			'query_type'          => 'get_results',
			'filter_range'        => true,
			'order_status'        => false,
			'parent_order_status' => array( 'completed', 'processing', 'on-hold' ),
		) );

		/**
		 * Total up values by combining full refunds and partial refunds for line items.
		 */
		$this->report_data->total_tax_refunded          = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->full_refunds, 'total_tax' ) ), 2 );
		$this->report_data->total_shipping_refunded     = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->full_refunds, 'total_shipping' ) ), 2 );
		$this->report_data->total_shipping_tax_refunded = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->full_refunds, 'total_shipping_tax' ) ), 2 );
		$this->report_data->total_refunds               = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->full_refunds, 'total_refund' ) ), 2 );

		/**
		 * Loop over partial refunds and increase the above values.
		 */
		foreach ( $this->report_data->partial_refunds as $key => $value ) {
			switch ( $value->item_type ) {
				case 'shipping' :
					$this->report_data->total_shipping_tax_refunded += ( $value->total_shipping_tax * -1 );
					$this->report_data->total_shipping_refunded     += wc_format_decimal( $value->total_refund, 2 );
					$this->report_data->total_refunds               += $value->total_refund;


					break;
				case 'line_item' :
					$this->report_data->total_tax_refunded   += ( $value->total_tax * -1 );
					$this->report_data->refunded_order_items += absint( $value->order_item_count );
					$this->report_data->total_refunds        += $value->total_refund;
					break;
			}
		}

		// Totals from all orders - including those refunded. Subtract refunded amounts.
		$this->report_data->total_tax          = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->orders, 'total_tax' ) ) - $this->report_data->total_tax_refunded, 2 );
		$this->report_data->total_shipping     = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->orders, 'total_shipping' ) ) - $this->report_data->total_shipping_refunded, 2 );
		$this->report_data->total_shipping_tax = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->orders, 'total_shipping_tax' ) ) - $this->report_data->total_shipping_tax_refunded, 2 );

		// Total the refunds and sales amounts. Sales subract refunds.
		$this->report_data->total_sales = wc_format_decimal( array_sum( wp_list_pluck( $this->report_data->orders, 'total_sales' ) ) - $this->report_data->total_refunds, 2 );
		$this->report_data->net_sales   = wc_format_decimal( $this->report_data->total_sales - $this->report_data->total_shipping - $this->report_data->total_tax - $this->report_data->total_shipping_tax, 2 );

		// Calculate average based on net
		$this->report_data->average_sales = wc_format_decimal( $this->report_data->net_sales / ( $this->chart_interval + 1 ), 2 );

		// Total orders and discounts also includes those which have been refunded at some point
		$this->report_data->total_orders          = absint( array_sum( wp_list_pluck( $this->report_data->order_counts, 'count' ) ) );
		$this->report_data->total_coupons         = number_format( array_sum( wp_list_pluck( $this->report_data->coupons, 'discount_amount' ) ), 2, '.', '' );
		$this->report_data->total_refunded_orders = absint( count( $this->report_data->full_refunds ) );

		// Item counts
		$this->report_data->total_items = absint( array_sum( wp_list_pluck( $this->report_data->order_items, 'order_item_count' ) ) );
	}

	/**
	 * Get the legend for the main chart sidebar
	 * @return array
	 */
	public function get_chart_legend() {
		$legend = array();
		$data   = $this->get_report_data();

		switch ( $this->chart_groupby ) {
			case 'day' :
				$average_sales_title = sprintf( __( '%s average daily sales', 'woocommerce' ), '<strong>' . wc_price( $data->average_sales ) . '</strong>' );
			break;
			case 'month' :
			default :
				$average_sales_title = sprintf( __( '%s average monthly sales', 'woocommerce' ), '<strong>' . wc_price( $data->average_sales ) . '</strong>' );
			break;
		}

		$legend[] = array(
			'title'            => sprintf( __( '%s gross sales in this period', 'woocommerce' ), '<strong>' . wc_price( $data->total_sales ) . '</strong>' ),
			'placeholder'      => __( 'This is the sum of the order totals after any refunds and including shipping and taxes.', 'woocommerce' ),
			'color'            => $this->chart_colours['sales_amount'],
			'highlight_series' => 5
		);
		$legend[] = array(
			'title'            => sprintf( __( '%s net sales in this period', 'woocommerce' ), '<strong>' . wc_price( $data->net_sales ) . '</strong>' ),
			'placeholder'      => __( 'This is the sum of the order totals after any refunds and excluding shipping and taxes.', 'woocommerce' ),
			'color'            => $this->chart_colours['net_sales_amount'],
			'highlight_series' => 6
		);
		if ( $data->average_sales > 0 ) {
			$legend[] = array(
				'title' => $average_sales_title,
				'color' => $this->chart_colours['average'],
				'highlight_series' => 2
			);
		}
		$legend[] = array(
			'title' => sprintf( __( '%s orders placed', 'woocommerce' ), '<strong>' . $data->total_orders . '</strong>' ),
			'color' => $this->chart_colours['order_count'],
			'highlight_series' => 1
		);

		$legend[] = array(
			'title' => sprintf( __( '%s items purchased', 'woocommerce' ), '<strong>' . $data->total_items . '</strong>' ),
			'color' => $this->chart_colours['item_count'],
			'highlight_series' => 0
		);
		$legend[] = array(
			'title' => sprintf( _n( '%s refunded %d order', '%s refunded %d orders', $this->report_data->total_refunded_orders, 'woocommerce' ), '<strong>' . wc_price( $data->total_refunds ) . '</strong>', $this->report_data->total_refunded_orders ) . ' (' . sprintf( _n( '%d item', '%d items', $this->report_data->refunded_order_items, 'woocommerce' ), $this->report_data->refunded_order_items ) . ')',
			'color' => $this->chart_colours['refund_amount'],
			'highlight_series' => 7
		);
		$legend[] = array(
			'title' => sprintf( __( '%s charged for shipping', 'woocommerce' ), '<strong>' . wc_price( $data->total_shipping ) . '</strong>' ),
			'color' => $this->chart_colours['shipping_amount'],
			'highlight_series' => 4
		);
		$legend[] = array(
			'title' => sprintf( __( '%s worth of coupons used', 'woocommerce' ), '<strong>' . wc_price( $data->total_coupons ) . '</strong>' ),
			'color' => $this->chart_colours['coupon_amount'],
			'highlight_series' => 3
		);

		return $legend;
	}

	/**
	 * Output the report
	 */
	public function output_report() {
		$ranges = array(
			'year'         => __( 'Year', 'woocommerce' ),
			'last_month'   => __( 'Last Month', 'woocommerce' ),
			'month'        => __( 'This Month', 'woocommerce' ),
			'7day'         => __( 'Last 7 Days', 'woocommerce' )
		);

		$this->chart_colours = array(
			'sales_amount'     => '#b1d4ea',
			'net_sales_amount' => '#3498db',
			'average'          => '#95a5a6',
			'order_count'      => '#dbe1e3',
			'item_count'       => '#ecf0f1',
			'shipping_amount'  => '#5cc488',
			'coupon_amount'    => '#f1c40f',
			'refund_amount'    => '#e74c3c'
		);

		$current_range = ! empty( $_GET['range'] ) ? sanitize_text_field( $_GET['range'] ) : '7day';

		if ( ! in_array( $current_range, array( 'custom', 'year', 'last_month', 'month', '7day' ) ) ) {
			$current_range = '7day';
		}

		$this->calculate_current_range( $current_range );

		include( WC()->plugin_path() . '/includes/admin/views/html-report-by-date.php');
	}

	/**
	 * Output an export link
	 */
	public function get_export_button() {
		$current_range = ! empty( $_GET['range'] ) ? sanitize_text_field( $_GET['range'] ) : '7day';
		?>
		<a
			href="#"
			download="report-<?php echo esc_attr( $current_range ); ?>-<?php echo date_i18n( 'Y-m-d', current_time('timestamp') ); ?>.csv"
			class="export_csv"
			data-export="chart"
			data-xaxes="<?php esc_attr_e( 'Date', 'woocommerce' ); ?>"
			data-exclude_series="2"
			data-groupby="<?php echo $this->chart_groupby; ?>"
		>
			<?php _e( 'Export CSV', 'woocommerce' ); ?>
		</a>
		<?php
	}

	/**
	 * Round our totals correctly
	 * @param  string $amount
	 * @return string
	 */
	private function round_chart_totals( $amount ) {
		if ( is_array( $amount ) ) {
			return array( $amount[0], wc_format_decimal( $amount[1], wc_get_price_decimals() ) );
		} else {
			return wc_format_decimal( $amount, wc_get_price_decimals() );
		}
	}

	/**
	 * Get the main chart
	 *
	 * @return string
	 */
	public function get_main_chart() {
		global $wp_locale;

		// Prepare data for report
		$order_counts         = $this->prepare_chart_data( $this->report_data->order_counts, 'post_date', 'count', $this->chart_interval, $this->start_date, $this->chart_groupby );
		$order_item_counts    = $this->prepare_chart_data( $this->report_data->order_items, 'post_date', 'order_item_count', $this->chart_interval, $this->start_date, $this->chart_groupby );
		$order_amounts        = $this->prepare_chart_data( $this->report_data->orders, 'post_date', 'total_sales', $this->chart_interval, $this->start_date, $this->chart_groupby );
		$coupon_amounts       = $this->prepare_chart_data( $this->report_data->coupons, 'post_date', 'discount_amount', $this->chart_interval, $this->start_date, $this->chart_groupby );
		$shipping_amounts     = $this->prepare_chart_data( $this->report_data->orders, 'post_date', 'total_shipping', $this->chart_interval, $this->start_date, $this->chart_groupby );
		$refund_amounts       = $this->prepare_chart_data( array_merge( $this->report_data->partial_refunds, $this->report_data->full_refunds ), 'post_date', 'total_refund', $this->chart_interval, $this->start_date, $this->chart_groupby );
		$shipping_tax_amounts = $this->prepare_chart_data( $this->report_data->orders, 'post_date', 'total_shipping_tax', $this->chart_interval, $this->start_date, $this->chart_groupby );
		$tax_amounts          = $this->prepare_chart_data( $this->report_data->orders, 'post_date', 'total_tax', $this->chart_interval, $this->start_date, $this->chart_groupby );

		$net_order_amounts = array();

		foreach ( $order_amounts as $order_amount_key => $order_amount_value ) {
			$net_order_amounts[ $order_amount_key ]    = $order_amount_value;
			$net_order_amounts[ $order_amount_key ][1] = $net_order_amounts[ $order_amount_key ][1] - $shipping_amounts[ $order_amount_key ][1] - $shipping_tax_amounts[ $order_amount_key ][1] - $tax_amounts[ $order_amount_key ][1];
		}

		// Encode in json format
		$chart_data = json_encode( array(
			'order_counts'      => array_values( $order_counts ),
			'order_item_counts' => array_values( $order_item_counts ),
			'order_amounts'     => array_map( array( $this, 'round_chart_totals' ), array_values( $order_amounts ) ),
			'net_order_amounts' => array_map( array( $this, 'round_chart_totals' ), array_values( $net_order_amounts ) ),
			'shipping_amounts'  => array_map( array( $this, 'round_chart_totals' ), array_values( $shipping_amounts ) ),
			'coupon_amounts'    => array_map( array( $this, 'round_chart_totals' ), array_values( $coupon_amounts ) ),
			'refund_amounts'    => array_map( array( $this, 'round_chart_totals' ), array_values( $refund_amounts ) )
		) );
		?>
		<div class="chart-container">
			<div class="chart-placeholder main"></div>
		</div>
		<script type="text/javascript">

			var main_chart;

			jQuery(function(){
				var order_data = jQuery.parseJSON( '<?php echo $chart_data; ?>' );
				var drawGraph = function( highlight ) {
					var series = [
						{
							label: "<?php echo esc_js( __( 'Number of items sold', 'woocommerce' ) ) ?>",
							data: order_data.order_item_counts,
							color: '<?php echo $this->chart_colours['item_count']; ?>',
							bars: { fillColor: '<?php echo $this->chart_colours['item_count']; ?>', fill: true, show: true, lineWidth: 0, barWidth: <?php echo $this->barwidth; ?> * 0.5, align: 'center' },
							shadowSize: 0,
							hoverable: false
						},
						{
							label: "<?php echo esc_js( __( 'Number of orders', 'woocommerce' ) ) ?>",
							data: order_data.order_counts,
							color: '<?php echo $this->chart_colours['order_count']; ?>',
							bars: { fillColor: '<?php echo $this->chart_colours['order_count']; ?>', fill: true, show: true, lineWidth: 0, barWidth: <?php echo $this->barwidth; ?> * 0.5, align: 'center' },
							shadowSize: 0,
							hoverable: false
						},
						{
							label: "<?php echo esc_js( __( 'Average sales amount', 'woocommerce' ) ) ?>",
							data: [ [ <?php echo min( array_keys( $order_amounts ) ); ?>, <?php echo $this->report_data->average_sales; ?> ], [ <?php echo max( array_keys( $order_amounts ) ); ?>, <?php echo $this->report_data->average_sales; ?> ] ],
							yaxis: 2,
							color: '<?php echo $this->chart_colours['average']; ?>',
							points: { show: false },
							lines: { show: true, lineWidth: 2, fill: false },
							shadowSize: 0,
							hoverable: false
						},
						{
							label: "<?php echo esc_js( __( 'Coupon amount', 'woocommerce' ) ) ?>",
							data: order_data.coupon_amounts,
							yaxis: 2,
							color: '<?php echo $this->chart_colours['coupon_amount']; ?>',
							points: { show: true, radius: 5, lineWidth: 2, fillColor: '#fff', fill: true },
							lines: { show: true, lineWidth: 2, fill: false },
							shadowSize: 0,
							<?php echo $this->get_currency_tooltip(); ?>
						},
						{
							label: "<?php echo esc_js( __( 'Shipping amount', 'woocommerce' ) ) ?>",
							data: order_data.shipping_amounts,
							yaxis: 2,
							color: '<?php echo $this->chart_colours['shipping_amount']; ?>',
							points: { show: true, radius: 5, lineWidth: 2, fillColor: '#fff', fill: true },
							lines: { show: true, lineWidth: 2, fill: false },
							shadowSize: 0,
							prepend_tooltip: "<?php echo get_woocommerce_currency_symbol(); ?>"
						},
						{
							label: "<?php echo esc_js( __( 'Gross Sales amount', 'woocommerce' ) ) ?>",
							data: order_data.order_amounts,
							yaxis: 2,
							color: '<?php echo $this->chart_colours['sales_amount']; ?>',
							points: { show: true, radius: 5, lineWidth: 2, fillColor: '#fff', fill: true },
							lines: { show: true, lineWidth: 2, fill: false },
							shadowSize: 0,
							<?php echo $this->get_currency_tooltip(); ?>
						},
						{
							label: "<?php echo esc_js( __( 'Net Sales amount', 'woocommerce' ) ) ?>",
							data: order_data.net_order_amounts,
							yaxis: 2,
							color: '<?php echo $this->chart_colours['net_sales_amount']; ?>',
							points: { show: true, radius: 6, lineWidth: 4, fillColor: '#fff', fill: true },
							lines: { show: true, lineWidth: 5, fill: false },
							shadowSize: 0,
							<?php echo $this->get_currency_tooltip(); ?>
						},
						{
							label: "<?php echo esc_js( __( 'Refund amount', 'woocommerce' ) ) ?>",
							data: order_data.refund_amounts,
							yaxis: 2,
							color: '<?php echo $this->chart_colours['refund_amount']; ?>',
							points: { show: true, radius: 5, lineWidth: 2, fillColor: '#fff', fill: true },
							lines: { show: true, lineWidth: 2, fill: false },
							shadowSize: 0,
							prepend_tooltip: "<?php echo get_woocommerce_currency_symbol(); ?>"
						},
					];

					if ( highlight !== 'undefined' && series[ highlight ] ) {
						highlight_series = series[ highlight ];

						highlight_series.color = '#9c5d90';

						if ( highlight_series.bars ) {
							highlight_series.bars.fillColor = '#9c5d90';
						}

						if ( highlight_series.lines ) {
							highlight_series.lines.lineWidth = 5;
						}
					}

					main_chart = jQuery.plot(
						jQuery('.chart-placeholder.main'),
						series,
						{
							legend: {
								show: false
							},
							grid: {
								color: '#aaa',
								borderColor: 'transparent',
								borderWidth: 0,
								hoverable: true
							},
							xaxes: [ {
								color: '#aaa',
								position: "bottom",
								tickColor: 'transparent',
								mode: "time",
								timeformat: "<?php if ( $this->chart_groupby == 'day' ) echo '%d %b'; else echo '%b'; ?>",
								monthNames: <?php echo json_encode( array_values( $wp_locale->month_abbrev ) ) ?>,
								tickLength: 1,
								minTickSize: [1, "<?php echo $this->chart_groupby; ?>"],
								font: {
									color: "#aaa"
								}
							} ],
							yaxes: [
								{
									min: 0,
									minTickSize: 1,
									tickDecimals: 0,
									color: '#d4d9dc',
									font: { color: "#aaa" }
								},
								{
									position: "right",
									min: 0,
									tickDecimals: 2,
									alignTicksWithAxis: 1,
									color: 'transparent',
									font: { color: "#aaa" }
								}
							],
						}
					);

					jQuery('.chart-placeholder').resize();
				}

				drawGraph();

				jQuery('.highlight_series').hover(
					function() {
						drawGraph( jQuery(this).data('series') );
					},
					function() {
						drawGraph();
					}
				);
			});
		</script>
		<?php
	}
}
