<?php namespace TomLingham\Searchy\Matchers;

/**
 * Matches strings that include all the characters in the search relatively position within the string.
 * It also calculates the percentage of characters in the string that are matched and applies the multiplier accordingly.
 *
 * For Example, a search for 'fba' would match; 'Foo Bar' or 'Afraid of bats'
 *
 * Class ConsecutiveCharactersMatcher
 * @package TomLingham\Searchy\Matchers
 */
class ConsecutiveCharactersMatcher extends BaseMatcher
{
	/**
	 * @var string
	 */
	protected $operator = 'LIKE';

	/**
	 * @param $searchString
	 * @return string
	 */
	public function formatSearchString( $searchString )
	{
		return '%'.implode('%', str_split( $searchString )).'%';
	}

	/**
	 * @param $column
	 * @param $rawString
	 * @return mixed|string
	 */
	public function buildQueryString( $column, $rawString )
	{
		$searchString = $this->formatSearchString( $rawString );

		$query = "IF($column {$this->operator} '$searchString', ROUND({$this->multiplier} * (CHAR_LENGTH( '$rawString' ) / CHAR_LENGTH( REPLACE($column, ' ', '') ))), 0)";

		return $query;
	}

}