Borobudur\Http\HeaderBag

Complexity

Total Complexity

25

Size/Duplication

Total Lines	216
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Importance

Changes

0

11 Methods

Rating	Name	Duplication	Size	Complexity
B	fromServer()	0	29	6
A	add()	0	20	4
A	set()	0	13	3
A	has()	0	4	1
A	first()	0	8	2
A	get()	0	4	1
A	all()	0	6	1
A	keys()	0	15	3
A	remove()	0	4	1
A	__toString()	0	10	1
A	sort()	0	7	2

<?php
/*
 * This file is part of the Borobudur-Http package.
 *
 * (c) Hexacodelabs <http://hexacodelabs.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Borobudur\Http;

use Borobudur\Http\Exception\InvalidArgumentException;
use Borobudur\Http\Header\GenericHeader;
use Borobudur\Http\Header\HeaderInterface;

/**
 * @author      Iqbal Maulana <iq.bluejack@gmail.com>
 * @created     7/28/15
 */
class HeaderBag extends AbstractParameterBag
{
    /**
     * @var HeaderInterface[]
     */
    protected $parameters = array();

    /**
     * @var bool
     */
    private $sorted = false;

    /**
     * Build HeaderBag from Server variables ($_SERVER).
     *
     * @param array $headers
     *
     * @return HeaderBag
     */
    public static function fromServer(array $headers)
    {
        $headerBag = new HeaderBag();
        foreach ($headers as $name => $values) {
            foreach ((array) $values as $value) {
                $parts = explode('-', str_replace('_', '-', strtolower($name)));
                $name = implode('-', array_map('ucfirst', $parts));
                $namespace = 'Borobudur\Http\Header';
                
                if (0 === strpos($name, 'Accept')) {
                    $namespace = sprintf('%s\Accept', $namespace);
                } elseif (0 === strpos($name, 'Content')) {
                    $namespace = sprintf('%s\Content', $namespace);
                }
    
                $class = sprintf('%s\%sHeader', $namespace, str_replace('-', '', $name));
                if (class_exists($class)) {
                    /**
                     * @var HeaderInterface $class
                     */
                    $headerBag->set($class::fromString(sprintf('%s: %s', $name, $value)), true);
                } else {
                    $headerBag->set(new GenericHeader($name, $value), true);
                }
            }
        }

        return $headerBag;
    }

    /**
     * Add sets of header.
     *
     * @param HeaderInterface[] $headers
     * @param bool              $replace
     *
     * @return $this
     *
     * @throws InvalidArgumentException
     */
    public function add(array $headers, $replace = false)
    {
        foreach ($headers as $header) {
            if (is_array($header)) {
                $this->add($header);
                continue;
            }
            
            if (false === $header instanceof HeaderInterface) {
                throw new InvalidArgumentException(sprintf(
                    'Header should implement "%s".',
                    'Borobudur\Http\Header\HeaderInterface'
                ));
            }

            $this->set($header, $replace);
        }

        return $this;
    }

    /**
     * Set header.
     *
     * @param HeaderInterface $header
     * @param bool            $replace
     *
     * @return $this
     */
    public function set(HeaderInterface $header, $replace = false)
    {
        $headerName = strtolower($header->getFieldName());

        if (false === $this->has($headerName) || true === $replace) {
            $this->parameters[$headerName] = array();
        }

        $this->parameters[$headerName][] = $header;
        $this->sorted = false;

        return $this;
    }

    /**
     * Check if header exist by header name.
     *
     * @param string $headerName
     *
     * @return bool
     */
    public function has($headerName)
    {
        return array_key_exists(strtolower($headerName), $this->parameters);
    }

    /**
     * Get first header by header name or return default value if not exist.
     *
     * @param string $headerName
     * @param mixed  $default
     *
     * @return HeaderInterface|null
     */
    public function first($headerName, $default = null)
    {
        if (null !== $headers = $this->get($headerName)) {
            return $headers[0];
        }

        return $default;
    }

    /**
     * Get headers by name or return default value if not exist.
     *
     * @param string $headerName
     * @param mixed  $default
     *
     * @return HeaderInterface[]|mixed
     */
    public function get($headerName, $default = null)
    {
        return parent::get(strtolower($headerName), $default);
    }

    /**
     * Get all headers.
     *
     * @return array
     */
    public function all()
    {
        $this->sort();

        return array_values($this->parameters);
    }

    /**
     * Get all header names.
     *
     * @return array
     */
    public function keys()
    {
        $this->sort();
        $keys = array();

        foreach ($this->parameters as $header) {
            $header = $header[0];

            if ($header instanceof HeaderInterface) {
                $keys[] = $header->getFieldName();
            }
        }

        return $keys;
    }

    /**
     * Remove header by header name.
     *
     * @param string $headerName
     *
     * @return $this
     */
    public function remove($headerName)
    {
        return parent::remove(strtolower($headerName));
    }

    /**
     * Cast HeaderBag to string representation.
     *
     * @return string
     */
    public function __toString()
    {
        $this->sort();

        return implode("\r\n", array_map(function (array $item) {
            return implode("\r\n", array_map(function (HeaderInterface $header) {
                return (string) $header;
            }, $item));
        }, $this->parameters));
    }

    /**
     * Sort headers by name.
     */
    private function sort()
    {
        if (false === $this->sorted) {
            ksort($this->parameters);
            $this->sorted = true;
        }
    }
}