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<?php

namespace FluentMail\App\Services\DB\QueryBuilder;

class QueryObject
{
    /**
     * @var string
     */
    protected $sql;

/**
     * @var \wpdb
     */
    protected $db;

/**
     * @var array
     */
    protected $bindings = array();

public function __construct($sql, array $bindings)
    {
        $this->sql = (string) $sql;

$this->bindings = $bindings;

global $wpdb;

$this->db = $wpdb;
    }

/**
     * @return string
     */
    public function getSql()
    {
        return $this->sql;
    }

/**
     * @return array
     */
    public function getBindings()
    {
        return $this->bindings;
    }

/**
     * Get the raw/bound sql
     *
     * @return string
     */
    public function getRawSql()
    {
        return $this->interpolateQuery($this->sql, $this->bindings);
    }

/**
     * Replaces any parameter placeholders in a query with the value of that
     * parameter. Useful for debugging. Assumes anonymous parameters from
     * $params are are in the same order as specified in $query
     *
     * Reference: http://stackoverflow.com/a/1376838/656489
     *
     * @param string $query  The sql query with parameter placeholders
     * @param array  $params The array of substitution parameters
     *
     * @return string The interpolated query
     */
    protected function interpolateQuery($query, $params)
    {
        $keys = $placeHolders = [];

foreach ($params as $key => $value) {
            if (is_string($key)) {
                $keys[] = '/:' . $key . '/';
            } else {
                $keys[] = '/[?]/';
            }

$placeHolders[] = $this->getPlaceHolder($value);
        }

$query = preg_replace($keys, $placeHolders, $query, 1, $count);

return $params ? $this->db->prepare($query, $params) : $query;
    }

private function getPlaceHolder($value)
    {
        $placeHolder = '%s';

if (is_int($value)) {
            $placeHolder = '%d';
        } elseif (is_float($value)) {
            $placeHolder = '%f';
        }

return $placeHolder;
    }
}