<?php
/**
 * Order Bump Sales by Category Report.
 *
 * @link       https://wpswings.com/?utm_source=wpswings-official&utm_medium=order-bump-org-backend&utm_campaign=official
 * @since      1.4.0
 *
 * @package    Upsell_Order_Bump_Offer_For_Woocommerce
 * @subpackage Upsell_Order_Bump_Offer_For_Woocommerce/reporting
 */

if (! defined('ABSPATH')) {
	exit; // Exit if accessed directly.
}

if (class_exists('Wps_Upsell_Order_Bump_Report_Sales_By_Category')) {
	return;
}

/**
 * The Admin-facing reporting functionality of the plugin.
 *
 * @package    Upsell_Order_Bump_Offer_For_Woocommerce
 * @subpackage Upsell_Order_Bump_Offer_For_Woocommerce/reporting
 * @author     WP Swings <webmaster@wpswings.com>
 */
class Wps_Upsell_Order_Bump_Report_Sales_By_Category extends WC_Admin_Report
{

	/**
	 * Chart colors.
	 *
	 * @var array
	 */
	public $chart_colours = array();

	/**
	 * Categories ids.
	 *
	 * @var array
	 */
	public $show_categories = array();

	/**
	 * Item sales.
	 *
	 * @var array
	 */
	private $item_sales = array();

	/**
	 * Item sales and times.
	 *
	 * @var array
	 */
	private $item_sales_and_times = array();

	/**
	 * Constructor.
	 */
	public function __construct()
	{

		$secure_nonce      = wp_create_nonce('wps-upsell-auth-nonce');
		$id_nonce_verified = wp_verify_nonce($secure_nonce, 'wps-upsell-auth-nonce');

		if (! $id_nonce_verified) {
			wp_die(esc_html__('Nonce Not verified', 'upsell-order-bump-offer-for-woocommerce'));
		}

		if (isset($_GET['show_categories'])) {
			$this->show_categories = is_array($_GET['show_categories']) ? array_map('absint', $_GET['show_categories']) : array(absint($_GET['show_categories']));
		}
	}

	/**
	 * Get all product ids in a category (and its children).
	 *
	 * @param  int $category_id Category ID.
	 * @return array
	 */
	public function get_products_in_category($category_id)
	{
		$term_ids    = get_term_children($category_id, 'product_cat');
		$term_ids[]  = $category_id;
		$product_ids = get_objects_in_term($term_ids, 'product_cat');

		return array_unique(apply_filters('woocommerce_report_sales_by_category_get_products_in_category', $product_ids, $category_id));
	}

	/**
	 * Get the legend for the main chart sidebar.
	 *
	 * @return array
	 */
	public function get_chart_legend()
	{

		if (empty($this->show_categories)) {
			return array();
		}

		$legend = array();
		$index  = 0;

		foreach ($this->show_categories as $category) {

			$category    = get_term($category, 'product_cat');
			$total       = 0;
			$product_ids = $this->get_products_in_category($category->term_id);

			foreach ($product_ids as $id) {

				if (isset($this->item_sales[$id])) {
					$total += $this->item_sales[$id];
				}
			}

			$legend[] = array(
				/* translators: 1: total items sold 2: category name */
				'title'            => sprintf(__('%1$s sales in %2$s', 'upsell-order-bump-offer-for-woocommerce'), '<strong>' . wc_price($total) . '</strong>', $category->name),
				'color'            => isset($this->chart_colours[$index]) ? $this->chart_colours[$index] : $this->chart_colours[0],
				'highlight_series' => $index,
			);

			$index++;
		}

		return $legend;
	}

	/**
	 * Output the report.
	 */
	public function output_report()
	{

		$ranges = array(
			'year'       => __('Year', 'upsell-order-bump-offer-for-woocommerce'),
			'last_month' => __('Last month', 'upsell-order-bump-offer-for-woocommerce'),
			'month'      => __('This month', 'upsell-order-bump-offer-for-woocommerce'),
			'7day'       => __('Last 7 days', 'upsell-order-bump-offer-for-woocommerce'),
		);

		$secure_nonce      = wp_create_nonce('wps-upsell-auth-nonce');
		$id_nonce_verified = wp_verify_nonce($secure_nonce, 'wps-upsell-auth-nonce');

		if (! $id_nonce_verified) {
			wp_die(esc_html__('Nonce Not verified', 'upsell-order-bump-offer-for-woocommerce'));
		}

		$this->chart_colours = array('#8eba36', '#3498db', '#1abc9c', '#34495e', '#2ecc71', '#f1c40f', '#e67e22', '#e74c3c', '#2980b9', '#8e44ad', '#2c3e50', '#16a085', '#27ae60', '#f39c12', '#d35400', '#c0392b');

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

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

		$this->check_current_range_nonce($current_range);
		$this->calculate_current_range($current_range);

		// Get item sales data.
		if (! empty($this->show_categories)) {
			$order_items = $this->get_order_report_data(
				array(
					'data'         => array(
						'_product_id'            => array(
							'type'            => 'order_item_meta',
							'order_item_type' => 'line_item',
							'function'        => '',
							'name'            => 'product_id',
						),
						'_line_total'            => array(
							'type'            => 'order_item_meta',
							'order_item_type' => 'line_item',
							'function'        => 'SUM',
							'name'            => 'order_item_amount',
						),
						'post_date'              => array(
							'type'     => 'post_data',
							'function' => '',
							'name'     => 'post_date',
						),
						'is_order_bump_purchase' => array(
							'type'            => 'order_item_meta',
							'order_item_type' => 'line_item',
							'function'        => '',
							'name'            => 'wps_upsell_order_bump_item_meta',
						),
					),
					'group_by'     => 'ID, product_id, post_date',
					'query_type'   => 'get_results',
					'filter_range' => true,
					'nocache'      => true, // Using these as it was not updating latest orders data.
				)
			);

			$this->item_sales           = array();
			$this->item_sales_and_times = array();

			if (is_array($order_items)) {

				foreach ($order_items as $order_item) {

					switch ($this->chart_groupby) {
						case 'day':
							$time = strtotime(gmdate('Ymd', strtotime($order_item->post_date))) * 1000;
							break;
						case 'month':
						default:
							$time = strtotime(gmdate('Ym', strtotime($order_item->post_date)) . '01') * 1000;
							break;
					}

					$this->item_sales_and_times[$time][$order_item->product_id] = isset($this->item_sales_and_times[$time][$order_item->product_id]) ? $this->item_sales_and_times[$time][$order_item->product_id] + $order_item->order_item_amount : $order_item->order_item_amount;

					$this->item_sales[$order_item->product_id] = isset($this->item_sales[$order_item->product_id]) ? $this->item_sales[$order_item->product_id] + $order_item->order_item_amount : $order_item->order_item_amount;
				}
			}
		}

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

	/**
	 * Get chart widgets.
	 *
	 * @return array
	 */
	public function get_chart_widgets()
	{

		return array(
			array(
				'title'    => __('Categories', 'upsell-order-bump-offer-for-woocommerce'),
				'callback' => array($this, 'category_widget'),
			),
		);
	}

	/**
	 * Output category widget.
	 */
	public function category_widget()
	{

		$categories = get_terms('product_cat');
?>
		<form method="GET">
			<div>
				<select multiple="multiple" data-placeholder="<?php esc_attr_e('Select categories&hellip;', 'upsell-order-bump-offer-for-woocommerce'); ?>" class="wc-enhanced-select" id="show_categories" name="show_categories[]" style="width: 205px;">
					<?php
					$r                 = array();
					$r['pad_counts']   = 1;
					$r['hierarchical'] = 1;
					$r['hide_empty']   = 1;
					$r['value']        = 'id';
					$r['selected']     = $this->show_categories;

					include_once WC()->plugin_path() . '/includes/walkers/class-wc-product-cat-dropdown-walker.php';

					$allowed_html = array(
						'option' => array(
							'value'    => array(),
							'selected' => array(),
							'class'    => array(),
						),
					);

					echo wp_kses(wc_walk_category_dropdown_tree($categories, 0, $r), $allowed_html);

					?>
				</select>
				<?php // @codingStandardsIgnoreStart 
				?>
				<a href="#" class="select_none"><?php esc_html_e('None', 'upsell-order-bump-offer-for-woocommerce'); ?></a>
				<a href="#" class="select_all"><?php esc_html_e('All', 'upsell-order-bump-offer-for-woocommerce'); ?></a>
				<button type="submit" class="submit button" value="<?php esc_attr_e('Show', 'upsell-order-bump-offer-for-woocommerce'); ?>"><?php esc_html_e('Show', 'upsell-order-bump-offer-for-woocommerce'); ?></button>
				<input type="hidden" name="range" value="<?php echo (! empty($_GET['range'])) ? esc_attr(sanitize_text_field(wp_unslash($_GET['range']))) : ''; ?>" />
				<input type="hidden" name="start_date" value="<?php echo (! empty($_GET['start_date'])) ? esc_attr(sanitize_text_field(wp_unslash($_GET['start_date']))) : ''; ?>" />
				<input type="hidden" name="end_date" value="<?php echo (! empty($_GET['end_date'])) ? esc_attr(sanitize_text_field(wp_unslash($_GET['end_date']))) : ''; ?>" />
				<input type="hidden" name="page" value="<?php echo (! empty($_GET['page'])) ? esc_attr(sanitize_text_field(wp_unslash($_GET['page']))) : ''; ?>" />
				<input type="hidden" name="tab" value="<?php echo (! empty($_GET['tab'])) ? esc_attr(sanitize_text_field(wp_unslash($_GET['tab']))) : ''; ?>" />
				<input type="hidden" name="report" value="<?php echo (! empty($_GET['report'])) ? esc_attr(sanitize_text_field(wp_unslash($_GET['report']))) : ''; ?>" />
				<?php // @codingStandardsIgnoreEnd 
				?>
			</div>
			<script type="text/javascript">
				jQuery(function() {
					// Select all/None
					jQuery('.chart-widget').on('click', '.select_all', function() {
						jQuery(this).closest('div').find('select option').attr('selected', 'selected');
						jQuery(this).closest('div').find('select').change();
						return false;
					});

					jQuery('.chart-widget').on('click', '.select_none', function() {
						jQuery(this).closest('div').find('select option').removeAttr('selected');
						jQuery(this).closest('div').find('select').change();
						return false;
					});
				});
			</script>
		</form>
	<?php
	}

	/**
	 * Output an export link.
	 */
	public function get_export_button()
	{

		$secure_nonce      = wp_create_nonce('wps-upsell-auth-nonce');
		$id_nonce_verified = wp_verify_nonce($secure_nonce, 'wps-upsell-auth-nonce');

		if (! $id_nonce_verified) {
			wp_die(esc_html__('Nonce Not verified', 'upsell-order-bump-offer-for-woocommerce'));
		}

		$current_range = ! empty($_GET['range']) ? sanitize_text_field(wp_unslash($_GET['range'])) : '7day';
	?>
		<a
			href="#"
			download="report-<?php echo esc_attr($current_range); ?>-<?php echo esc_attr(date_i18n('Y-m-d', time())); ?>.csv"
			class="export_csv"
			data-export="chart"
			data-xaxes="<?php esc_attr_e('Date', 'upsell-order-bump-offer-for-woocommerce'); ?>"
			data-groupby="<?php echo esc_attr($this->chart_groupby); ?>">
			<?php esc_html_e('Export CSV', 'upsell-order-bump-offer-for-woocommerce'); ?>
		</a>
		<?php
	}

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

		if (empty($this->show_categories)) {
		?>
			<div class="chart-container">
				<p class="chart-prompt"><?php esc_html_e('Choose a category to view stats', 'upsell-order-bump-offer-for-woocommerce'); ?></p>
			</div>
		<?php
		} else {
			$chart_data = array();
			$index      = 0;

			foreach ($this->show_categories as $category) {

				$category            = get_term($category, 'product_cat');
				$product_ids         = $this->get_products_in_category($category->term_id);
				$category_chart_data = array();

				for ($i = 0; $i <= $this->chart_interval; $i++) {

					$interval_total = 0;

					switch ($this->chart_groupby) {
						case 'day':
							$time = strtotime(gmdate('Ymd', strtotime("+{$i} DAY", $this->start_date))) * 1000;
							break;
						case 'month':
						default:
							$time = strtotime(gmdate('Ym', strtotime("+{$i} MONTH", $this->start_date)) . '01') * 1000;
							break;
					}

					foreach ($product_ids as $id) {

						if (isset($this->item_sales_and_times[$time][$id])) {
							$interval_total += $this->item_sales_and_times[$time][$id];
						}
					}

					$category_chart_data[] = array($time, (float) wc_format_decimal($interval_total, wc_get_price_decimals()));
				}

				$chart_data[$category->term_id]['category'] = $category->name;
				$chart_data[$category->term_id]['data']     = $category_chart_data;

				$index++;
			}
		?>
			<div class="chart-container">
				<div class="chart-placeholder main"></div>
			</div>
			<script type="text/javascript">
				var main_chart;
				jQuery(function() {
					var drawGraph = function(highlight) {
						var series = [
							<?php
							$index = 0;
							foreach ($chart_data as $data) {
								$color  = isset($this->chart_colours[$index]) ? $this->chart_colours[$index] : $this->chart_colours[0];
								$width  = $this->barwidth / count($chart_data);
								$offset = ($width * $index);
								$series = $data['data'];

								foreach ($series as $key => $series_data) {
									$series[$key][0] = $series_data[0] + $offset;
								}

								$series = wp_json_encode($series);

								echo '{
					label: "' . esc_js($data['category']) . '",
					data: JSON.parse( decodeURIComponent( "' . rawurlencode($series) . '" ) ),
					color: "' . esc_html($color) . '",
					bars: {
						fillColor: "' . esc_html($color) . '",
						fill: true,
						show: true,
						lineWidth: 1,
						align: "center",
						barWidth: ' . esc_html($width) * 0.75 . ',
						stack: false
					},
					prepend_tooltip: "' . esc_html(get_woocommerce_currency_symbol()) . '",
					enable_tooltip: true,
					prepend_label: true
					},';
								$index++;
							}
							?>
						];

						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',
									reserveSpace: true,
									position: "bottom",
									tickColor: 'transparent',
									mode: "time",
									timeformat: "<?php echo ('day' === $this->chart_groupby) ? '%d %b' : '%b'; ?>",
									monthNames: JSON.parse(decodeURIComponent('<?php echo rawurlencode(wp_json_encode(array_values($wp_locale->month_abbrev))); ?>')),
									tickLength: 1,
									minTickSize: [1, "<?php echo esc_html($this->chart_groupby); ?>"],
									tickSize: [1, "<?php echo esc_html($this->chart_groupby); ?>"],
									font: {
										color: "#aaa"
									}
								}],
								yaxes: [{
									min: 0,
									tickDecimals: 2,
									color: 'transparent',
									font: {
										color: "#aaa"
									}
								}],
							}
						);

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

					}

					drawGraph();

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