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<?php

/**
 * This file is part of the Lean Mapper library (http://www.leanmapper.com)
 *
 * Copyright (c) 2013 Vojtěch Kohout (aka Tharos)
 *
 * For the full copyright and license information, please view the file
 * license-mit.txt that was distributed with this source code.
 */

namespace LeanMapper\Reflection;

/**
 * Entity reflection
 *
 * @author Vojtěch Kohout
 */
class EntityReflection extends \ReflectionClass
{

    /** @var Property[] */
    private $properties;

    /** @var array */
    private $aliases;

    /** @var string */
    private $docComment;


    /**
     * Gets requested entity property
     *
     * @param string $name
     * @return Property|null
     */
    public function getEntityProperty($name)
    {
        $this->initProperties();
        return isset($this->properties[$name]) ? $this->properties[$name] : null;
    }

    /**
     * Gets LeanMapper\Reflection\Aliases instance valid for current class
     *
     * @return Aliases
     */
    public function getAliases()
    {
        if ($this->aliases === null) {
            $this->aliases = AliasesParser::parseSource(file_get_contents($this->getFileName()), $this->getNamespaceName());
        }
        return $this->aliases;
    }

    /**
     * Returns parent entity reflection
     *
     * @return self|null
     */
    public function getParentClass()
    {
        return ($reflection = parent::getParentClass()) ? new self($reflection->getName()) : null;
    }

    /**
     * Returns doc comment of current class
     *
     * @return string
     */
    public function getDocComment()
    {
        if ($this->docComment === null) {
            $this->docComment = parent::getDocComment();
        }
        return $this->docComment;
    }

    ////////////////////
    ////////////////////

    private function initProperties()
    {
        if ($this->properties === null) {
            $this->parseProperties();
        }
    }

    private function parseProperties()
    {
        foreach ($this->getFamilyLine() as $member) {
            foreach (AnnotationsParser::parseAnnotationValues('property', $member->getDocComment()) as $definition) {
                $property = PropertyFactory::createFromAnnotation($definition, $this);
                $this->properties[$property->getName()] = $property;
            }
        }
    }

    /**
     * @return self[]
     */
    private function getFamilyLine()
    {
        $line = array($member = $this);
        while ($member = $member->getParentClass()) {
            if ($member->name === 'LeanMapper\Entity') break;
            $line[] = $member;
        }
        return array_reverse($line);
    }

}