<?php
/*
 * This file is part of the PHPUnit_MockObject package.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Invocation matcher which looks for sets of specific parameters in the invocations.
 *
 * Checks the parameters of the incoming invocations, the parameter list is
 * checked against the defined constraints in $parameters. If the constraint
 * is met it will return true in matches().
 *
 * It takes a list of match groups and and increases a call index after each invocation.
 * So the first invocation uses the first group of constraints, the second the next and so on.
 */
class PHPUnit_Framework_MockObject_Matcher_ConsecutiveParameters extends PHPUnit_Framework_MockObject_Matcher_StatelessInvocation
{
    /**
     * @var array
     */
    private $_parameterGroups = array();

    /**
     * @var array
     */
    private $_invocations = array();

    /**
     * @param array $parameterGroups
     */
    public function __construct(array $parameterGroups)
    {
        foreach ($parameterGroups as $index => $parameters) {
            foreach ($parameters as $parameter) {
                if (!($parameter instanceof \PHPUnit_Framework_Constraint)) {
                    $parameter = new \PHPUnit_Framework_Constraint_IsEqual($parameter);
                }
                $this->_parameterGroups[$index][] = $parameter;
            }
        }
    }

    /**
     * @return string
     */
    public function toString()
    {
        $text = 'with consecutive parameters';

        return $text;
    }

    /**
     * @param  PHPUnit_Framework_MockObject_Invocation $invocation
     * @return bool
     */
    public function matches(PHPUnit_Framework_MockObject_Invocation $invocation)
    {
        $this->_invocations[] = $invocation;
        $callIndex            = count($this->_invocations) - 1;
        $this->verifyInvocation($invocation, $callIndex);

        return false;
    }

    public function verify()
    {
        foreach ($this->_invocations as $callIndex => $invocation) {
            $this->verifyInvocation($invocation, $callIndex);
        }
    }

    /**
     * Verify a single invocation
     *
     * @param  PHPUnit_Framework_MockObject_Invocation      $invocation
     * @param  int                                          $callIndex
     * @throws PHPUnit_Framework_ExpectationFailedException
     */
    private function verifyInvocation(PHPUnit_Framework_MockObject_Invocation $invocation, $callIndex)
    {

        if (isset($this->_parameterGroups[$callIndex])) {
            $parameters = $this->_parameterGroups[$callIndex];
        } else {
          // no parameter assertion for this call index
            return;
        }

        if ($invocation === null) {
            throw new PHPUnit_Framework_ExpectationFailedException(
                'Mocked method does not exist.'
            );
        }

        if (count($invocation->parameters) < count($parameters)) {
            throw new PHPUnit_Framework_ExpectationFailedException(
                sprintf(
                    'Parameter count for invocation %s is too low.',
                    $invocation->toString()
                )
            );
        }

        foreach ($parameters as $i => $parameter) {
            $parameter->evaluate(
                $invocation->parameters[$i],
                sprintf(
                    'Parameter %s for invocation #%d %s does not match expected ' .
                    'value.',
                    $i,
                    $callIndex,
                    $invocation->toString()
                )
            );
        }
    }
}
