<?php
namespace GraphQL\Examples\Blog;

use GraphQL\Examples\Blog\Type\CommentType;
use GraphQL\Examples\Blog\Type\Enum\ContentFormatEnum;
use GraphQL\Examples\Blog\Type\Enum\ImageSizeEnumType;
use GraphQL\Examples\Blog\Type\Field\HtmlField;
use GraphQL\Examples\Blog\Type\SearchResultType;
use GraphQL\Examples\Blog\Type\NodeType;
use GraphQL\Examples\Blog\Type\QueryType;
use GraphQL\Examples\Blog\Type\Scalar\EmailType;
use GraphQL\Examples\Blog\Type\StoryType;
use GraphQL\Examples\Blog\Type\Scalar\UrlType;
use GraphQL\Examples\Blog\Type\UserType;
use GraphQL\Examples\Blog\Type\ImageType;
use GraphQL\Type\Definition\ListOfType;
use GraphQL\Type\Definition\NonNull;
use GraphQL\Type\Definition\Type;

/**
 * Class Types
 *
 * Acts as a registry and factory for your types.
 *
 * As simplistic as possible for the sake of clarity of this example.
 * Your own may be more dynamic (or even code-generated).
 *
 * @package GraphQL\Examples\Blog
 */
class Types
{
    // Object types:
    private static $user;
    private static $story;
    private static $comment;
    private static $image;
    private static $query;

    /**
     * @return UserType
     */
    public static function user()
    {
        return self::$user ?: (self::$user = new UserType());
    }

    /**
     * @return StoryType
     */
    public static function story()
    {
        return self::$story ?: (self::$story = new StoryType());
    }

    /**
     * @return CommentType
     */
    public static function comment()
    {
        return self::$comment ?: (self::$comment = new CommentType());
    }

    /**
     * @return ImageType
     */
    public static function image()
    {
        return self::$image ?: (self::$image = new ImageType());
    }

    /**
     * @return QueryType
     */
    public static function query()
    {
        return self::$query ?: (self::$query = new QueryType());
    }


    // Interface types
    private static $node;

    /**
     * @return NodeType
     */
    public static function node()
    {
        return self::$node ?: (self::$node = new NodeType());
    }


    // Unions types:
    private static $mention;

    /**
     * @return SearchResultType
     */
    public static function mention()
    {
        return self::$mention ?: (self::$mention = new SearchResultType());
    }


    // Enum types
    private static $imageSizeEnum;
    private static $contentFormatEnum;

    /**
     * @return ImageSizeEnumType
     */
    public static function imageSizeEnum()
    {
        return self::$imageSizeEnum ?: (self::$imageSizeEnum = new ImageSizeEnumType());
    }

    /**
     * @return ContentFormatEnum
     */
    public static function contentFormatEnum()
    {
        return self::$contentFormatEnum ?: (self::$contentFormatEnum = new ContentFormatEnum());
    }

    // Custom Scalar types:
    private static $urlType;
    private static $emailType;

    public static function email()
    {
        return self::$emailType ?: (self::$emailType = EmailType::create());
    }

    /**
     * @return UrlType
     */
    public static function url()
    {
        return self::$urlType ?: (self::$urlType = new UrlType());
    }

    /**
     * @param $name
     * @param null $objectKey
     * @return array
     */
    public static function htmlField($name, $objectKey = null)
    {
        return HtmlField::build($name, $objectKey);
    }


    // Let's add internal types as well for consistent experience

    public static function boolean()
    {
        return Type::boolean();
    }

    /**
     * @return \GraphQL\Type\Definition\FloatType
     */
    public static function float()
    {
        return Type::float();
    }

    /**
     * @return \GraphQL\Type\Definition\IDType
     */
    public static function id()
    {
        return Type::id();
    }

    /**
     * @return \GraphQL\Type\Definition\IntType
     */
    public static function int()
    {
        return Type::int();
    }

    /**
     * @return \GraphQL\Type\Definition\StringType
     */
    public static function string()
    {
        return Type::string();
    }

    /**
     * @param Type $type
     * @return ListOfType
     */
    public static function listOf($type)
    {
        return new ListOfType($type);
    }

    /**
     * @param Type $type
     * @return NonNull
     */
    public static function nonNull($type)
    {
        return new NonNull($type);
    }
}