<?php

namespace Symfony\Component\Validator\Mapping;

/*
 * This file is part of the Symfony framework.
 *
 * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Exception\ValidatorException;

class ClassMetadata extends ElementMetadata
{
    public $name;
    public $shortName;
    public $members = array();
    public $properties = array();
    public $getters = array();
    public $groupSequence = array();
    private $reflClass;

    /**
     * Constructs a metadata for the given class
     *
     * @param string $class
     */
    public function __construct($class)
    {
        $this->name = $class;
        $this->shortName = substr($class, strrpos($class, '\\') + 1);
    }

    /**
     * Returns the properties to be serialized
     *
     * @return array
     */
    public function __sleep()
    {
        return array_merge(parent::__sleep(), array(
            'getters',
            'groupSequence',
            'members',
            'name',
           	'properties',
            'shortName'
        ));
    }

    /**
     * Returns the fully qualified name of the class
     *
     * @return string  The fully qualified class name
     */
    public function getClassName()
    {
        return $this->name;
    }

    /**
     * Returns the class name without namespace
     *
     * @return string  The local class name in the namespace
     */
    public function getShortClassName()
    {
        return $this->shortName;
    }

    /**
     * {@inheritDoc}
     */
    public function addConstraint(Constraint $constraint)
    {
        $constraint->addImplicitGroupName($this->getShortClassName());

        parent::addConstraint($constraint);
    }

    /**
     * Adds a constraint to the given property
     *
     * @param  string     $property    The name of the property
     * @param  Constraint $constraint  The constraint
     * @return ClassMetadata           This object
     */
    public function addPropertyConstraint($property, Constraint $constraint)
    {
        if (!isset($this->properties[$property])) {
            $this->properties[$property] = new PropertyMetadata($this->getClassName(), $property);

            $this->addMemberMetadata($this->properties[$property]);
        }

        $constraint->addImplicitGroupName($this->getShortClassName());

        $this->properties[$property]->addConstraint($constraint);

        return $this;
    }

    /**
     * Adds a constraint to the getter of the given property
     *
     * The name of the getter is assumed to be the name of the property with an
     * uppercased first letter and either the prefix "get" or "is".
     *
     * @param  string     $property    The name of the property
     * @param  Constraint $constraint  The constraint
     * @return ClassMetadata           This object
     */
    public function addGetterConstraint($property, Constraint $constraint)
    {
        if (!isset($this->getters[$property])) {
            $this->getters[$property] = new GetterMetadata($this->getClassName(), $property);

            $this->addMemberMetadata($this->getters[$property]);
        }

        $constraint->addImplicitGroupName($this->getShortClassName());

        $this->getters[$property]->addConstraint($constraint);

        return $this;
    }

    /**
     * Merges the constraints of the given metadata into this object
     *
     * @param ClassMetadata $source  The source metadata
     */
    public function mergeConstraints(ClassMetadata $source)
    {
        foreach ($source->getConstraints() as $constraint) {
            $this->addConstraint(clone $constraint);
        }

        foreach ($source->getConstrainedProperties() as $property) {
            foreach ($source->getMemberMetadatas($property) as $member) {
                $member = clone $member;

                foreach ($member->getConstraints() as $constraint) {
                    $constraint->addImplicitGroupName($this->getShortClassName());
                }

                $this->addMemberMetadata($member);

                if (!$member->isPrivate()) {
                    $property = $member->getPropertyName();

                    if ($member instanceof PropertyMetadata && !isset($this->properties[$property])) {
                        $this->properties[$property] = $member;
                    } else if ($member instanceof GetterMetadata && !isset($this->getters[$property])) {
                        $this->getters[$property] = $member;
                    }
                }
            }
        }
    }

    /**
     * Adds a member metadata
     *
     * @param MemberMetadata $metadata
     */
    protected function addMemberMetadata(MemberMetadata $metadata)
    {
        $property = $metadata->getPropertyName();

        if (!isset($this->members[$property])) {
            $this->members[$property] = array();
        }

        $this->members[$property][] = $metadata;
    }

    /**
     * Returns all metadatas of members describing the given property
     *
     * @param string $property  The name of the property
     */
    public function getMemberMetadatas($property)
    {
        return $this->members[$property];
    }

    /**
     * Returns all properties for which constraints are defined
     *
     * @return array  An array of property names
     */
    public function getConstrainedProperties()
    {
        return array_keys($this->members);
    }

    /**
     * Sets the default group sequence for this class
     *
     * @param array $groups  An array of group names
     */
    public function setGroupSequence(array $groups)
    {
        $this->groupSequence = $groups;

        return $this;
    }

    /**
     * Returns whether this class has an overridden default group sequence
     *
     * @return boolean
     */
    public function hasGroupSequence()
    {
        return count($this->groupSequence) > 0;
    }

    /**
     * Returns the default group sequence for this class
     *
     * @return array  An array of group names
     */
    public function getGroupSequence()
    {
        return $this->groupSequence;
    }

    /**
     * Returns a ReflectionClass instance for this class
     *
     * @return ReflectionClass
     */
    public function getReflectionClass()
    {
        if (!$this->reflClass) {
            $this->reflClass = new \ReflectionClass($this->getClassName());
        }

        return $this->reflClass;
    }
}