<?php

namespace SearchRegex;

/**
 * Represents flags for a particular search
 */
class Search_Flags {
	/** @var String[] */
	private $flags = [];

	/**
	 * Create a Source_Flags object with an array of flag strings
	 *
	 * @param Array $flags Array of flag values.
	 */
	public function __construct( array $flags = [] ) {
		$allowed = [
			'regex',
			'case',
		];

		$this->flags = array_filter( $flags, function( $flag ) use ( $allowed ) {
			return array_search( $flag, $allowed, true ) !== false;
		} );
	}

	/**
	 * Is the flag set?
	 *
	 * @param String $flag Flag to check.
	 * @return boolean true if set, false otherwise
	 */
	public function has_flag( $flag ) {
		return in_array( $flag, $this->flags, true );
	}

	/**
	 * Is the a regular expression search?
	 *
	 * @return boolean true if yes, false otherwise
	 */
	public function is_regex() {
		return $this->has_flag( 'regex' );
	}

	/**
	 * Is the a case insensitive search?
	 *
	 * @return boolean true if yes, false otherwise
	 */
	public function is_case_insensitive() {
		return $this->has_flag( 'case' );
	}

	/**
	 * Get all the flags
	 *
	 * @return Array Array of flags
	 */
	public function get_flags() {
		return $this->flags;
	}
}