<?php

declare(strict_types=1);

namespace Sabre\DAVACL\PrincipalBackend;

class Mock extends AbstractBackend
{
    public $groupMembers = [];
    public $principals;

    public function __construct(array $principals = null)
    {
        $this->principals = $principals;

        if (is_null($principals)) {
            $this->principals = [
                [
                    'uri' => 'principals/user1',
                    '{DAV:}displayname' => 'User 1',
                    '{http://sabredav.org/ns}email-address' => 'user1.sabredav@sabredav.org',
                    '{http://sabredav.org/ns}vcard-url' => 'addressbooks/user1/book1/vcard1.vcf',
                ],
                [
                    'uri' => 'principals/admin',
                    '{DAV:}displayname' => 'Admin',
                ],
                [
                    'uri' => 'principals/user2',
                    '{DAV:}displayname' => 'User 2',
                    '{http://sabredav.org/ns}email-address' => 'user2.sabredav@sabredav.org',
                ],
            ];
        }
    }

    public function getPrincipalsByPrefix($prefix)
    {
        $prefix = trim($prefix, '/');
        if ($prefix) {
            $prefix .= '/';
        }
        $return = [];

        foreach ($this->principals as $principal) {
            if ($prefix && 0 !== strpos($principal['uri'], $prefix)) {
                continue;
            }

            $return[] = $principal;
        }

        return $return;
    }

    public function addPrincipal(array $principal)
    {
        $this->principals[] = $principal;
    }

    public function getPrincipalByPath($path)
    {
        foreach ($this->getPrincipalsByPrefix('principals') as $principal) {
            if ($principal['uri'] === $path) {
                return $principal;
            }
        }
    }

    public function searchPrincipals($prefixPath, array $searchProperties, $test = 'allof')
    {
        $matches = [];
        foreach ($this->getPrincipalsByPrefix($prefixPath) as $principal) {
            foreach ($searchProperties as $key => $value) {
                if (!isset($principal[$key])) {
                    continue 2;
                }
                if (false === mb_stripos($principal[$key], $value, 0, 'UTF-8')) {
                    continue 2;
                }

                // We have a match for this searchProperty!
                if ('allof' === $test) {
                    continue;
                } else {
                    break;
                }
            }
            $matches[] = $principal['uri'];
        }

        return $matches;
    }

    public function getGroupMemberSet($path)
    {
        return isset($this->groupMembers[$path]) ? $this->groupMembers[$path] : [];
    }

    public function getGroupMembership($path)
    {
        $membership = [];
        foreach ($this->groupMembers as $group => $members) {
            if (in_array($path, $members)) {
                $membership[] = $group;
            }
        }

        return $membership;
    }

    public function setGroupMemberSet($path, array $members)
    {
        $this->groupMembers[$path] = $members;
    }

    /**
     * Updates one ore more webdav properties on a principal.
     *
     * The list of mutations is stored in a Sabre\DAV\PropPatch object.
     * To do the actual updates, you must tell this object which properties
     * you're going to process with the handle() method.
     *
     * Calling the handle method is like telling the PropPatch object "I
     * promise I can handle updating this property".
     *
     * Read the PropPatch documentation for more info and examples.
     *
     * @param string $path
     */
    public function updatePrincipal($path, \Sabre\DAV\PropPatch $propPatch)
    {
        $value = null;
        foreach ($this->principals as $principalIndex => $value) {
            if ($value['uri'] === $path) {
                $principal = $value;
                break;
            }
        }
        if (!$principal) {
            return;
        }

        $propPatch->handleRemaining(function ($mutations) use ($principal, $principalIndex) {
            foreach ($mutations as $prop => $value) {
                if (is_null($value) && isset($principal[$prop])) {
                    unset($principal[$prop]);
                } else {
                    $principal[$prop] = $value;
                }
            }

            $this->principals[$principalIndex] = $principal;

            return true;
        });
    }
}
