<?php

use WeDevs\Dokan\Cache;

if ( ! function_exists( 'dokan_get_order_report_data' ) ) :
	/**
	 * Generate SQL query and fetch the report data based on the arguments passed
	 *
	 * This function was cloned from WC_Admin_Report class.
	 *
	 * @since 1.0
	 *
	 * @global WPDB $wpdb
	 * @global WP_User $current_user
	 * @param array $args
	 * @param string $start_date
	 * @param string $end_date
	 * @return obj
	 */
	function dokan_get_order_report_data( $args, $start_date, $end_date ) {
		global $wpdb;

		$current_user = dokan_get_current_user_id();

		$defaults = array(
			'data'         => array(),
			'where'        => array(),
			'where_meta'   => array(),
			'query_type'   => 'get_row',
			'group_by'     => '',
			'order_by'     => '',
			'limit'        => '',
			'filter_range' => false,
			'nocache'      => false,
			'debug'        => false,
		);

		$args = wp_parse_args( $args, $defaults );

		extract( $args );

		if ( empty( $data ) ) {
			return false;
		}

		$select = array();

		foreach ( $data as $key => $value ) {
			$distinct = '';

			if ( isset( $value['distinct'] ) ) {
				$distinct = 'DISTINCT';
			}

			if ( $value['type'] == 'meta' ) {
				$get_key = "meta_{$key}.meta_value";
			} elseif ( $value['type'] == 'post_data' ) {
				$get_key = "posts.{$key}";
			} elseif ( $value['type'] == 'order_item_meta' ) {
				$get_key = "order_item_meta_{$key}.meta_value";
			} elseif ( $value['type'] == 'order_item' ) {
				$get_key = "order_items.{$key}";
			} elseif ( $value['type'] == 'dokan_orders' ) {
				$get_key = "do.{$key}";
			}

			if ( $value['function'] ) {
				$get = "{$value['function']}({$distinct} {$get_key})";
			} else {
				$get = "{$distinct} {$get_key}";
            }

			$select[] = "{$get} as {$value['name']}";
		}

		$query['select'] = 'SELECT ' . implode( ',', $select );
		$query['from']   = "FROM {$wpdb->posts} AS posts";

		// Joins
		$joins         = array();
		$joins['do']  = "LEFT JOIN {$wpdb->prefix}dokan_orders AS do ON posts.ID = do.order_id";

		foreach ( $data as $key => $value ) {
			if ( $value['type'] == 'meta' ) {
				$joins[ "meta_{$key}" ] = "LEFT JOIN {$wpdb->postmeta} AS meta_{$key} ON posts.ID = meta_{$key}.post_id";
			} elseif ( $value['type'] == 'order_item_meta' ) {
				$joins['order_items'] = "LEFT JOIN {$wpdb->prefix}woocommerce_order_items AS order_items ON posts.ID = order_items.order_id";
				$joins[ "order_item_meta_{$key}" ] = "LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS order_item_meta_{$key} ON order_items.order_item_id = order_item_meta_{$key}.order_item_id";
			} elseif ( $value['type'] == 'order_item' ) {
				$joins['order_items'] = "LEFT JOIN {$wpdb->prefix}woocommerce_order_items AS order_items ON posts.ID = order_items.order_id";
			}
		}

		if ( ! empty( $where_meta ) ) {
			foreach ( $where_meta as $value ) {
				if ( ! is_array( $value ) ) {
					continue;
				}

				$key = is_array( $value['meta_key'] ) ? $value['meta_key'][0] : $value['meta_key'];

				if ( isset( $value['type'] ) && $value['type'] == 'order_item_meta' ) {
					$joins['order_items'] = "LEFT JOIN {$wpdb->prefix}woocommerce_order_items AS order_items ON posts.ID = order_items.order_id";
					$joins[ "order_item_meta_{$key}" ] = "LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS order_item_meta_{$key} ON order_items.order_item_id = order_item_meta_{$key}.order_item_id";
				} else {
					// If we have a where clause for meta, join the postmeta table
					$joins[ "meta_{$key}" ] = "LEFT JOIN {$wpdb->postmeta} AS meta_{$key} ON posts.ID = meta_{$key}.post_id";
				}
			}
		}

		$query['join'] = implode( ' ', $joins );

		$query['where'] = "
        WHERE   posts.post_type     = 'shop_order'
        AND     posts.post_status   != 'trash'
        AND     do.seller_id = {$current_user}
        AND     do.order_status IN ('" . implode( "','", esc_sql( apply_filters( 'woocommerce_reports_order_statuses', array( 'wc-completed', 'wc-processing', 'wc-on-hold' ) ) ) ) . "')
        ";

		if ( $filter_range && ! empty( $start_date ) && ! empty( $end_date ) ) {
			$query['where'] .= "
            AND     DATE(post_date) >= '" . $start_date . "'
            AND     DATE(post_date) <= '" . $end_date . "'
        ";
		}

		foreach ( $data as $key => $value ) {
			if ( $value['type'] == 'meta' ) {
				$query['where'] .= " AND meta_{$key}.meta_key = '{$key}'";
			} elseif ( $value['type'] == 'order_item_meta' ) {
				$query['where'] .= " AND order_items.order_item_type = '{$value['order_item_type']}'";
				$query['where'] .= " AND order_item_meta_{$key}.meta_key = '{$key}'";
			}
		}

		if ( ! empty( $where_meta ) ) {
			$relation = isset( $where_meta['relation'] ) ? $where_meta['relation'] : 'AND';

			$query['where'] .= ' AND (';

			foreach ( $where_meta as $index => $value ) {
				if ( ! is_array( $value ) ) {
					continue;
				}

				$key = is_array( $value['meta_key'] ) ? $value['meta_key'][0] : $value['meta_key'];

				if ( strtolower( $value['operator'] ) == 'in' ) {
					if ( is_array( $value['meta_value'] ) ) {
						$value['meta_value'] = implode( "','", $value['meta_value'] );
					}
					if ( ! empty( $value['meta_value'] ) ) {
						$where_value = "IN ('{$value['meta_value']}')";
					}
				} else {
					$where_value = "{$value['operator']} '{$value['meta_value']}'";
				}

				if ( ! empty( $where_value ) ) {
					if ( $index > 0 ) {
						$query['where'] .= ' ' . $relation;
					}

					if ( isset( $value['type'] ) && $value['type'] == 'order_item_meta' ) {
						if ( is_array( $value['meta_key'] ) ) {
							$query['where'] .= " ( order_item_meta_{$key}.meta_key   IN ('" . implode( "','", $value['meta_key'] ) . "')";
						} else {
							$query['where'] .= " ( order_item_meta_{$key}.meta_key   = '{$value['meta_key']}'";
                        }

						$query['where'] .= " AND order_item_meta_{$key}.meta_value {$where_value} )";
					} else {
						if ( is_array( $value['meta_key'] ) ) {
							$query['where'] .= " ( meta_{$key}.meta_key   IN ('" . implode( "','", $value['meta_key'] ) . "')";
						} else {
							$query['where'] .= " ( meta_{$key}.meta_key   = '{$value['meta_key']}'";
                        }

						$query['where'] .= " AND meta_{$key}.meta_value {$where_value} )";
					}
				}
			}

			$query['where'] .= ')';
		}

		if ( ! empty( $where ) ) {
			foreach ( $where as $value ) {
				if ( strtolower( $value['operator'] ) == 'in' ) {
					if ( is_array( $value['value'] ) ) {
						$value['value'] = implode( "','", $value['value'] );
					}
					if ( ! empty( $value['value'] ) ) {
						$where_value = "IN ('{$value['value']}')";
					}
				} else {
					$where_value = "{$value['operator']} '{$value['value']}'";
				}

				if ( ! empty( $where_value ) ) {
					$query['where'] .= " AND {$value['key']} {$where_value}";
				}
			}
		}

		if ( $group_by ) {
			$query['group_by'] = "GROUP BY {$group_by}";
		}

		if ( $order_by ) {
			$query['order_by'] = "ORDER BY {$order_by}";
		}

		if ( $limit ) {
			$query['limit'] = "LIMIT {$limit}";
		}

		$query      = apply_filters( 'dokan_reports_get_order_report_query', $query );
		$query      = implode( ' ', $query );
		$query_hash = md5( $query_type . $query );

		if ( $debug ) {
			error_log( sprintf( '<pre>%s</pre>', print_r( $query, true ) ) );
		}

        $cache_group = "report_data_seller_{$current_user}";
        $cache_key   = 'wc_report_' . $query_hash;

        $result = Cache::get_transient( $cache_key, $cache_group );
		if ( $debug || $nocache || ( false === $result ) ) {
			$result = apply_filters( 'dokan_reports_get_order_report_data', $wpdb->$query_type( $query ), $data );

			if ( $filter_range ) {
				if ( $end_date == date( 'Y-m-d', current_time( 'timestamp' ) ) ) {
					$expiration = 60 * 60 * 1; // 1 hour
				} else {
					$expiration = 60 * 60 * 24; // 24 hour
				}
			} else {
				$expiration = 60 * 60 * 24; // 24 hour
			}

			Cache::set_transient( $cache_key, $result, $cache_group, $expiration );
		}

		return $result;
	}

endif;


if ( ! function_exists( 'dokan_dashboard_sales_overview' ) ) :

	/**
	 * Generate seller dashboard overview chart
	 *
	 * @since 1.0
	 * @return void
	 */
	function dokan_dashboard_sales_overview() {
        $now        = dokan_current_datetime();
        $start_date = $now->modify( 'first day of this month' )->modify( 'today' )->format( 'Y-m-d' );
        $end_date   = $now->modify( 'today' )->format( 'Y-m-d' );

		dokan_sales_overview_chart_data( $start_date, $end_date, 'day' );
	}

endif;


if ( ! function_exists( 'dokan_sales_overview_chart_data' ) ) :

	/**
	 * Prepares chart data for sales overview
	 *
	 * @since 1.0
	 *
	 * @param string $start_date
	 * @param string $end_date
	 * @param string $group_by
     *
     * @return void
	 */
	function dokan_sales_overview_chart_data( $start_date, $end_date, $group_by ) {
		global $wp_locale;

        $now                = dokan_current_datetime();
		$start_date_to_time = $now->modify( $start_date )->getTimestamp();
		$end_date_to_time   = $now->modify( $end_date )->getTimestamp();
        $chart_interval     = dokan_get_interval_between_dates( $start_date_to_time, $end_date_to_time, $group_by );

		if ( $group_by === 'day' ) {
			$group_by_query       = 'YEAR(post_date), MONTH(post_date), DAY(post_date)';
			$barwidth             = 60 * 60 * 24 * 1000;
		} else {
			$group_by_query = 'YEAR(post_date), MONTH(post_date)';
			$barwidth = 60 * 60 * 24 * 7 * 4 * 1000;
		}

		// Get orders and dates in range - we want the SUM of order totals, COUNT of order items, COUNT of orders, and the date
		$orders = dokan_get_order_report_data(
            array(
				'data' => array(
					'_order_total' => array(
						'type'     => 'meta',
						'function' => 'SUM',
						'name'     => 'total_sales',
					),
					'ID' => array(
						'type'     => 'post_data',
						'function' => 'COUNT',
						'name'     => 'total_orders',
						'distinct' => true,
					),
					'post_date' => array(
						'type'     => 'post_data',
						'function' => '',
						'name'     => 'post_date',
					),
				),
				'group_by'     => $group_by_query,
				'order_by'     => 'post_date ASC',
				'query_type'   => 'get_results',
				'filter_range' => true,
				'debug' => false,
            ), $start_date, $end_date
        );

		// Prepare data for report
		$order_counts      = dokan_prepare_chart_data( $orders, 'post_date', 'total_orders', $chart_interval, $start_date_to_time, $group_by );
		$order_amounts     = dokan_prepare_chart_data( $orders, 'post_date', 'total_sales', $chart_interval, $start_date_to_time, $group_by );

		// Encode in json format
		$chart_data = array(
			'order_counts'      => array_values( $order_counts ),
			'order_amounts'     => array_values( $order_amounts ),
		);

		$chart_colours = array(
			'order_counts'  => '#3498db',
			'order_amounts'   => '#1abc9c',
		);

		?>
    <div class="chart-container">
        <div class="chart-placeholder main" style="width: 100%; height: 350px;"></div>
    </div>

    <script type="text/javascript">
        jQuery(function($) {

            var order_data = JSON.parse( '<?php echo wp_json_encode( $chart_data ); ?>' );
            var isRtl = '<?php echo is_rtl() ? '1' : '0'; ?>';
            var series = [
                {
                    label: "<?php echo esc_js( __( 'Sales total', 'dokan-lite' ) ); ?>",
                    data: order_data.order_amounts,
                    shadowSize: 0,
                    hoverable: true,
                    points: { show: true, radius: 5, lineWidth: 1, fillColor: '#fff', fill: true },
                    lines: { show: true, lineWidth: 2, fill: false },
                    shadowSize: 0,
                    prepend_tooltip: "<?php echo esc_attr( get_woocommerce_currency_symbol() ); ?>"
                },
                {
                    label: "<?php echo esc_js( __( 'Number of orders', 'dokan-lite' ) ); ?>",
                    data: order_data.order_counts,
                    shadowSize: 0,
                    hoverable: true,
                    points: { show: true, radius: 5, lineWidth: 2, fillColor: '#fff', fill: true },
                    lines: { show: true, lineWidth: 3, fill: false },
                    shadowSize: 0,
                    append_tooltip: " <?php echo esc_html__( 'Sales', 'dokan-lite' ); ?>"
                },
            ];

            var main_chart = jQuery.plot(
                jQuery('.chart-placeholder.main'),
                series,
                {
                    legend: {
                        show: true,
                        position: 'nw'
                    },
                    series: {
                        lines: { show: true, lineWidth: 4, fill: false },
                        points: { show: true }
                    },
                    grid: {
                        borderColor: '#eee',
                        color: '#aaa',
                        borderWidth: 1,
                        hoverable: true,
                        show: true,
                        aboveData: false,
                    },
                    xaxis: {
                        color: '#aaa',
                        position: "bottom",
                        tickColor: 'transparent',
                        mode: "time",
                        timeformat: "<?php if ( $group_by == 'day' ) echo '%d %b'; else echo '%b'; ?>",
                        monthNames: <?php echo json_encode( array_values( $wp_locale->month_abbrev ) ); ?>,
                        tickLength: 1,
                        minTickSize: [1, "<?php echo esc_attr( $group_by ); ?>"],
                        font: {
                            color: "#aaa"
                        },
                        transform: function (v) { return ( isRtl == '1' ) ? -v : v; },
                        inverseTransform: function (v) { return ( isRtl == '1' ) ? -v : v; }
                    },
                    yaxes: [
                        {
                            position: ( isRtl == '1' ) ? "right" : "left",
                            min: 0,
                            minTickSize: 1,
                            tickDecimals: 0,
                            color: '#d4d9dc',
                            font: { color: "#aaa" }
                        },
                        {
                            position: ( isRtl == '1' ) ? "right" : "left",
                            min: 0,
                            tickDecimals: 2,
                            alignTicksWithAxis: 1,
                            color: 'transparent',
                            font: { color: "#aaa" }
                        }
                    ],
                    colors: ["<?php echo esc_attr( $chart_colours['order_counts'] ); ?>", "<?php echo esc_attr( $chart_colours['order_amounts'] ); ?>"]
                }
            );

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

    </script>
		<?php
	}

endif;