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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

require_once("Summary_report.php");

class Summary_discounts extends Summary_report
{
    function __construct()
    {
        parent::__construct();
    }

    protected function _get_data_columns()
    {
        return array(
            array('discount' => $this->lang->line('reports_discount_percent'), 'sorter' => 'number_sorter'),
            array('count' => $this->lang->line('reports_count')));
    }

    public function getData(array $inputs)
    {
        $this->db->select('MAX(CONCAT(sales_items.discount_percent, "%")) AS discount_percent, count(*) AS count');
        $this->db->from('sales_items AS sales_items');
        $this->db->join('sales AS sales', 'sales_items.sale_id = sales.sale_id', 'inner');

        $this->db->where('discount_percent > 0');

        $this->_where($inputs);

        $this->db->group_by('sales_items.discount_percent');
        $this->db->order_by('sales_items.discount_percent');

        return $this->db->get()->result_array();
    }
}
?>