<?php
class ModelReportCoupon extends Model {

    public function getCoupons($data = array()) {
        $sql = "SELECT ch.coupon_id, c.name, c.code, COUNT(DISTINCT ch.order_id) AS `orders`, SUM(ch.amount) AS total FROM `" . DB_PREFIX . "coupon_history` ch LEFT JOIN `" . DB_PREFIX . "coupon` c ON (ch.coupon_id = c.coupon_id)";

        $implode = array();

        if (!empty($data['filter_date_start'])) {
            $implode[] = "DATE(ch.date_added) >= '" . $this->db->escape($data['filter_date_start']) . "'";
        }

        if (!empty($data['filter_date_end'])) {
            $implode[] = "DATE(ch.date_added) <= '" . $this->db->escape($data['filter_date_end']) . "'";
        }

        if ($implode) {
            $sql .= " WHERE " . implode(" AND ", $implode);
        }

        $sql .= " GROUP BY ch.coupon_id ORDER BY total DESC";

        if (isset($data['start']) || isset($data['limit'])) {
            if ($data['start'] < 0) {
                $data['start'] = 0;
            }

            if ($data['limit'] < 1) {
                $data['limit'] = 20;
            }

            $sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
        }

        $query = $this->db->query($sql);

        return $query->rows;
    }

    public function getTotalCoupons($data = array()) {
        $sql = "SELECT COUNT(DISTINCT coupon_id) AS total FROM `" . DB_PREFIX . "coupon_history`";

        $implode = array();

        if (!empty($data['filter_date_start'])) {
            $implode[] = "DATE(date_added) >= '" . $this->db->escape($data['filter_date_start']) . "'";
        }

        if (!empty($data['filter_date_end'])) {
            $implode[] = "DATE(date_added) <= '" . $this->db->escape($data['filter_date_end']) . "'";
        }

        if ($implode) {
            $sql .= " WHERE " . implode(" AND ", $implode);
        }

        $query = $this->db->query($sql);

        return $query->row['total'];
    }

}