<?php



/*

 * This file is part of the Prophecy.

 * (c) Konstantin Kudryashov <ever.zet@gmail.com>

 *     Marcello Duarte <marcello.duarte@gmail.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */



namespace Prophecy\Argument;



/**

 * Arguments wildcarding.

 *

 * @author Konstantin Kudryashov <ever.zet@gmail.com>

 */

class ArgumentsWildcard

{

    /**

     * @var Token\TokenInterface[]

     */

    private $tokens = array();

    private $string;



    /**

     * Initializes wildcard.

     *

     * @param array $arguments Array of argument tokens or values

     */

    public function __construct(array $arguments)

    {

        foreach ($arguments as $argument) {

            if (!$argument instanceof Token\TokenInterface) {

                $argument = new Token\ExactValueToken($argument);

            }



            $this->tokens[] = $argument;

        }

    }



    /**

     * Calculates wildcard match score for provided arguments.

     *

     * @param array $arguments

     *

     * @return false|int False OR integer score (higher - better)

     */

    public function scoreArguments(array $arguments)

    {

        if (0 == count($arguments) && 0 == count($this->tokens)) {

            return 1;

        }



        $arguments  = array_values($arguments);

        $totalScore = 0;

        foreach ($this->tokens as $i => $token) {

            $argument = isset($arguments[$i]) ? $arguments[$i] : null;

            if (1 >= $score = $token->scoreArgument($argument)) {

                return false;

            }



            $totalScore += $score;



            if (true === $token->isLast()) {

                return $totalScore;

            }

        }



        if (count($arguments) > count($this->tokens)) {

            return false;

        }



        return $totalScore;

    }



    /**

     * Returns string representation for wildcard.

     *

     * @return string

     */

    public function __toString()

    {

        if (null === $this->string) {

            $this->string = implode(', ', array_map(function ($token) {

                return (string) $token;

            }, $this->tokens));

        }



        return $this->string;

    }



    /**

     * @return array

     */

    public function getTokens()

    {

        return $this->tokens;

    }

}

