<?php

namespace bff\http;

/**
 * Response cookies
 * @copyright Tamaranga
 */
trait Cookies
{
    /**
     * @var Cookie[]
     */
    protected $cookies = [];

    /**
     * Add cookie to array
     * @param Cookie $cookie
     */
    protected function setCookie(Cookie $cookie)
    {
        $name = $cookie->getName();
        $cookie->setDomainDefault($this->defaultDomain());

        $this->cookies[$cookie->getDomain()][$cookie->getPath()][$name] = $cookie;
    }

    /**
     * Clears a cookie in the browser.
     * @param string $name
     * @param string|null $path
     * @param string|null $domain
     * @return bool
     */
    protected function unsetCookie(string $name, ?string $path = '/', ?string $domain = null)
    {
        if (empty($path)) {
            $path = '/';
        }

        $domain = $this->defaultDomain($domain);

        if (isset($this->cookies[$domain][$path][$name])) {
            unset($this->cookies[$domain][$path][$name]);
            return true;
        }

        return false;
    }

    /**
     * With cookie
     * @param Cookie $cookie
     * @return static
     */
    public function withCookie(Cookie $cookie)
    {
        $new = clone $this;
        $new->setCookie($cookie);

        return $new;
    }

    /**
     * With cookies
     * @param Cookie[] $cookies
     * @return static
     */
    public function withCookies(array $cookies)
    {
        $new = clone $this;

        foreach ($cookies as $cookie) {
            if ($cookie instanceof Cookie) {
                $new->setCookie($cookie);
            }
        }

        return $new;
    }

    /**
     * Without cookie
     * @param string $name
     * @param string|null $path
     * @param string|null $domain
     * @return static
     */
    public function withoutCookie(string $name, ?string $path = '/', ?string $domain = null)
    {
        $new = clone $this;
        $new->unsetCookie($name, $path, $domain);

        return $new;
    }

    /**
     * Delete cookie
     * @param string $name
     * @param string|null $path
     * @param string|null $domain
     * @param bool $secure
     * @param bool $httpOnly
     * @param string|null $sameSite
     * @return static
     */
    public function deleteCookie(string $name, ?string $path = '/', ?string $domain = null, bool $secure = false, bool $httpOnly = true, ?string $sameSite = null)
    {
        $new = clone $this;

        # try to unset first
        if ($new->unsetCookie($name, $path, $domain)) {
            return $new;
        }
        $new->setCookie(
            new Cookie($name, null, 1, $path, $domain, $secure, $httpOnly, false, $sameSite)
        );

        return $new;
    }

    /**
     * Returns an array with all cookies.
     * @param bool $flat
     * @return Cookie[]
     */
    public function getCookies($flat = true)
    {
        if ($flat) {
            $flattened = [];
            foreach ($this->cookies as $path) {
                foreach ($path as $cookies) {
                    foreach ($cookies as $cookie) {
                        $flattened[] = $cookie;
                    }
                }
            }
            return $flattened;
        }

        return $this->cookies;
    }

    public function defaultDomain(?string $domain = null)
    {
        return $domain ?? '.' . bff('host');
    }
}