diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..2c63c08
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,2 @@
+{
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..62a29d3
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,18 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "d751713988987e9331980363e24189ce",
+    "packages": [],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
+}
diff --git a/flexiapi/app/Providers/ContactBackend.php b/flexiapi/app/Providers/ContactBackend.php
new file mode 100644
index 0000000..b3ef9e3
--- /dev/null
+++ b/flexiapi/app/Providers/ContactBackend.php
@@ -0,0 +1,229 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Providers;
+
+use App\Account;
+use Sabre\CardDAV;
+use Sabre\DAV;
+use Sabre\DAV\PropPatch;
+use Sabre\CardDAV\Backend\AbstractBackend;
+use Sabre\CardDAV\Plugin;
+
+class ContactBackend extends AbstractBackend
+{
+    /**
+     * Returns the list of addressbooks for a specific user.
+     *
+     * @param string $principalUri
+     *
+     * @return array
+     */
+    public function getAddressBooksForUser($principalUri)
+    {
+        $addressBooks = [[
+            'id' => '1',
+            'uri' => 'default',
+            'principaluri' => 'principals/tester',
+            '{DAV:}displayname' => 'Contacts',
+            '{'.Plugin::NS_CARDDAV.'}addressbook-description' => 'User contacts',
+            '{http://calendarserver.org/ns/}getctag' => '6697',
+            '{http://sabredav.org/ns}sync-token' =>  '6697',
+        ]];
+
+        return $addressBooks;
+    }
+
+    /**
+     * Updates properties for an address book.
+     *
+     * 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 $addressBookId
+     */
+    public function updateAddressBook($addressBookId, PropPatch $propPatch)
+    {
+        return false;
+    }
+
+    /**
+     * Creates a new address book.
+     *
+     * @param string $principalUri
+     * @param string $url          just the 'basename' of the url
+     *
+     * @return int Last insert id
+     */
+    public function createAddressBook($principalUri, $url, array $properties)
+    {
+        return 'default';
+    }
+
+    /**
+     * Deletes an entire addressbook and all its contents.
+     *
+     * @param int $addressBookId
+     */
+    public function deleteAddressBook($addressBookId)
+    {
+
+    }
+
+    /**
+     * Returns all cards for a specific addressbook id.
+     *
+     * This method should return the following properties for each card:
+     *   * carddata - raw vcard data
+     *   * uri - Some unique url
+     *   * lastmodified - A unix timestamp
+     *
+     * It's recommended to also return the following properties:
+     *   * etag - A unique etag. This must change every time the card changes.
+     *   * size - The size of the card in bytes.
+     *
+     * If these last two properties are provided, less time will be spent
+     * calculating them. If they are specified, you can also ommit carddata.
+     * This may speed up certain requests, especially with large cards.
+     *
+     * @param mixed $addressbookId
+     *
+     * @return array
+     */
+    public function getCards($addressbookId)
+    {
+        $result = [];
+        $row['etag'] = '"etag"';
+        $row['lastmodified'] = 1680010509;
+        $row['uri'] = 'hop.vcf';
+        $row['size'] = '147';
+        $row['id'] = '2';
+        $result[] = $row;
+
+
+//        var_dump($result); exit;
+        return $result;
+    }
+
+    /**
+     * Returns a specific card.
+     *
+     * The same set of properties must be returned as with getCards. The only
+     * exception is that 'carddata' is absolutely required.
+     *
+     * If the card does not exist, you must return false.
+     *
+     * @param mixed  $addressBookId
+     * @param string $cardUri
+     *
+     * @return array
+     */
+    public function getCard($addressBookId, $cardUri)
+    {
+        $result['etag'] = '"123"';
+        $result['lastmodified'] = 123;
+        $result['uri'] = 'gnap';
+        $result['carddata'] = Account::first()->toVcard4();
+
+        return $result;
+    }
+
+    /**
+     * Returns a list of cards.
+     *
+     * This method should work identical to getCard, but instead return all the
+     * cards in the list as an array.
+     *
+     * If the backend supports this, it may allow for some speed-ups.
+     *
+     * @param mixed $addressBookId
+     *
+     * @return array
+     */
+    public function getMultipleCards($addressBookId, array $uris)
+    {
+        return $this->getCards($addressBookId);
+    }
+
+    /**
+     * Creates a new card.
+     *
+     * The addressbook id will be passed as the first argument. This is the
+     * same id as it is returned from the getAddressBooksForUser method.
+     *
+     * The cardUri is a base uri, and doesn't include the full path. The
+     * cardData argument is the vcard body, and is passed as a string.
+     *
+     * It is possible to return an ETag from this method. This ETag is for the
+     * newly created resource, and must be enclosed with double quotes (that
+     * is, the string itself must contain the double quotes).
+     *
+     * You should only return the ETag if you store the carddata as-is. If a
+     * subsequent GET request on the same card does not have the same body,
+     * byte-by-byte and you did return an ETag here, clients tend to get
+     * confused.
+     *
+     * If you don't return an ETag, you can just return null.
+     *
+     * @param mixed  $addressBookId
+     * @param string $cardUri
+     * @param string $cardData
+     *
+     * @return string|null
+     */
+    public function createCard($addressBookId, $cardUri, $cardData)
+    {
+        return null;
+    }
+
+    /**
+     * Updates a card.
+     *
+     * The addressbook id will be passed as the first argument. This is the
+     * same id as it is returned from the getAddressBooksForUser method.
+     *
+     * The cardUri is a base uri, and doesn't include the full path. The
+     * cardData argument is the vcard body, and is passed as a string.
+     *
+     * It is possible to return an ETag from this method. This ETag should
+     * match that of the updated resource, and must be enclosed with double
+     * quotes (that is: the string itself must contain the actual quotes).
+     *
+     * You should only return the ETag if you store the carddata as-is. If a
+     * subsequent GET request on the same card does not have the same body,
+     * byte-by-byte and you did return an ETag here, clients tend to get
+     * confused.
+     *
+     * If you don't return an ETag, you can just return null.
+     *
+     * @param mixed  $addressBookId
+     * @param string $cardUri
+     * @param string $cardData
+     *
+     * @return string|null
+     */
+    public function updateCard($addressBookId, $cardUri, $cardData)
+    {
+        return null;
+    }
+
+    /**
+     * Deletes a card.
+     *
+     * @param mixed  $addressBookId
+     * @param string $cardUri
+     *
+     * @return bool
+     */
+    public function deleteCard($addressBookId, $cardUri)
+    {
+        return false;
+    }
+}
diff --git a/flexiapi/app/Providers/DAVServiceProvider.php b/flexiapi/app/Providers/DAVServiceProvider.php
new file mode 100644
index 0000000..14e0885
--- /dev/null
+++ b/flexiapi/app/Providers/DAVServiceProvider.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Providers;
+
+use App\Account;
+use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
+use LaravelSabre\LaravelSabre;
+use Sabre\DAVACL\PrincipalCollection;
+//use Sabre\DAVACL\PrincipalBackend\PDO as PrincipalBackend;
+use Sabre\CardDAV\Plugin as CardDAVPlugin;
+use Sabre\DAV\Browser\Plugin as BrowserPlugin;
+//use Sabre\CardDAV\Backend\PDO
+
+class DAVServiceProvider extends ServiceProvider
+{
+    /**
+     * Bootstrap any application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        LaravelSabre::nodes(function () {
+            return $this->nodes();
+        });
+
+        LaravelSabre::plugins(function () {
+            return $this->plugins();
+        });
+    }
+
+    /**
+     * List of nodes for DAV Collection.
+     */
+    private function nodes() : array
+    {
+        $contactBackend = new ContactBackend;
+        $principalBackend = new PrincipalBackend;
+
+        return [
+            //new \Sabre\DAVACL\PrincipalCollection($principalBackend),
+            new \Sabre\CardDAV\AddressBookRoot($principalBackend, $contactBackend),
+            //new PrincipalCollection($contactBackend),
+        ];
+        //return Account::all()->toArray();
+    }
+
+    private function plugins()
+    {
+        yield new BrowserPlugin();
+        yield new CardDAVPlugin();
+    }
+}
diff --git a/flexiapi/app/Providers/PrincipalBackend.php b/flexiapi/app/Providers/PrincipalBackend.php
new file mode 100644
index 0000000..492d0ff
--- /dev/null
+++ b/flexiapi/app/Providers/PrincipalBackend.php
@@ -0,0 +1,215 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Providers;
+
+use Sabre\DAV;
+use Sabre\DAV\MkCol;
+use Sabre\Uri;
+use Sabre\DAVACL\PrincipalBackend\AbstractBackend;
+
+/**
+ * PDO principal backend.
+ *
+ * This backend assumes all principals are in a single collection. The default collection
+ * is 'principals/', but this can be overridden.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class PrincipalBackend extends AbstractBackend
+{
+    /**
+     * A list of additional fields to support.
+     *
+     * @var array
+     */
+    protected $fieldMap = [
+        /*
+         * This property can be used to display the users' real name.
+         */
+        '{DAV:}displayname' => [
+            'dbField' => 'displayname',
+        ],
+
+        /*
+         * This is the users' primary email-address.
+         */
+        '{http://sabredav.org/ns}email-address' => [
+            'dbField' => 'email',
+        ],
+    ];
+
+    /**
+     * Returns a list of principals based on a prefix.
+     *
+     * This prefix will often contain something like 'principals'. You are only
+     * expected to return principals that are in this base path.
+     *
+     * You are expected to return at least a 'uri' for every user, you can
+     * return any additional properties if you wish so. Common properties are:
+     *   {DAV:}displayname
+     *   {http://sabredav.org/ns}email-address - This is a custom SabreDAV
+     *     field that's actualy injected in a number of other properties. If
+     *     you have an email address, use this property.
+     *
+     * @param string $prefixPath
+     *
+     * @return array
+     */
+    public function getPrincipalsByPrefix($prefixPath)
+    {
+        return [[
+            'uri' => 'default'
+        ]];
+    }
+
+    /**
+     * Returns a specific principal, specified by it's path.
+     * The returned structure should be the exact same as from
+     * getPrincipalsByPrefix.
+     *
+     * @param string $path
+     *
+     * @return array
+     */
+    public function getPrincipalByPath($path)
+    {
+        return [
+            'id' => 'default',
+            'uri' => 'default'
+        ];
+    }
+
+    /**
+     * 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, DAV\PropPatch $propPatch)
+    {
+        return true;
+    }
+
+    /**
+     * This method is used to search for principals matching a set of
+     * properties.
+     *
+     * This search is specifically used by RFC3744's principal-property-search
+     * REPORT.
+     *
+     * The actual search should be a unicode-non-case-sensitive search. The
+     * keys in searchProperties are the WebDAV property names, while the values
+     * are the property values to search on.
+     *
+     * By default, if multiple properties are submitted to this method, the
+     * various properties should be combined with 'AND'. If $test is set to
+     * 'anyof', it should be combined using 'OR'.
+     *
+     * This method should simply return an array with full principal uri's.
+     *
+     * If somebody attempted to search on a property the backend does not
+     * support, you should simply return 0 results.
+     *
+     * You can also just return 0 results if you choose to not support
+     * searching at all, but keep in mind that this may stop certain features
+     * from working.
+     *
+     * @param string $prefixPath
+     * @param string $test
+     *
+     * @return array
+     */
+    public function searchPrincipals($prefixPath, array $searchProperties, $test = 'allof')
+    {
+        $principals = [];
+
+        return $principals;
+    }
+
+    /**
+     * Finds a principal by its URI.
+     *
+     * This method may receive any type of uri, but mailto: addresses will be
+     * the most common.
+     *
+     * Implementation of this API is optional. It is currently used by the
+     * CalDAV system to find principals based on their email addresses. If this
+     * API is not implemented, some features may not work correctly.
+     *
+     * This method must return a relative principal path, or null, if the
+     * principal was not found or you refuse to find it.
+     *
+     * @param string $uri
+     * @param string $principalPrefix
+     *
+     * @return string
+     */
+    public function findByUri($uri, $principalPrefix)
+    {
+        $uri = null;
+
+        return $uri;
+    }
+
+    /**
+     * Returns the list of members for a group-principal.
+     *
+     * @param string $principal
+     *
+     * @return array
+     */
+    public function getGroupMemberSet($principal)
+    {
+        $result = [];
+        return $result;
+    }
+
+    /**
+     * Returns the list of groups a principal is a member of.
+     *
+     * @param string $principal
+     *
+     * @return array
+     */
+    public function getGroupMembership($principal)
+    {
+        $result = [];
+        return $result;
+    }
+
+    /**
+     * Updates the list of group members for a group principal.
+     *
+     * The principals should be passed as a list of uri's.
+     *
+     * @param string $principal
+     */
+    public function setGroupMemberSet($principal, array $members)
+    {
+    }
+
+    /**
+     * Creates a new principal.
+     *
+     * This method receives a full path for the new principal. The mkCol object
+     * contains any additional webdav properties specified during the creation
+     * of the principal.
+     *
+     * @param string $path
+     */
+    public function createPrincipal($path, MkCol $mkCol)
+    {
+    }
+}
diff --git a/flexiapi/composer.json b/flexiapi/composer.json
index ba0956e..ba2d080 100644
--- a/flexiapi/composer.json
+++ b/flexiapi/composer.json
@@ -14,6 +14,7 @@
         "endroid/qr-code": "^4.1",
         "fakerphp/faker": "^1.21",
         "laravel/framework": "^9.5",
+        "monicahq/laravel-sabre": "^1.7",
         "namoshek/laravel-redis-sentinel": "^0.1.2",
         "ovh/ovh": "^3.0",
         "parsedown/laravel": "^1.2",
diff --git a/flexiapi/composer.lock b/flexiapi/composer.lock
index 1a44f76..5445ba9 100644
--- a/flexiapi/composer.lock
+++ b/flexiapi/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "a31eb010c7ab5e6155a75412b6da7e9c",
+    "content-hash": "c0a1843a0db7d1c82ee4989a78418fa3",
     "packages": [
         {
             "name": "anhskohbo/no-captcha",
@@ -399,16 +399,16 @@
         },
         {
             "name": "doctrine/dbal",
-            "version": "3.6.5",
+            "version": "3.6.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/dbal.git",
-                "reference": "96d5a70fd91efdcec81fc46316efc5bf3da17ddf"
+                "reference": "63646ffd71d1676d2f747f871be31b7e921c7864"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/dbal/zipball/96d5a70fd91efdcec81fc46316efc5bf3da17ddf",
-                "reference": "96d5a70fd91efdcec81fc46316efc5bf3da17ddf",
+                "url": "https://api.github.com/repos/doctrine/dbal/zipball/63646ffd71d1676d2f747f871be31b7e921c7864",
+                "reference": "63646ffd71d1676d2f747f871be31b7e921c7864",
                 "shasum": ""
             },
             "require": {
@@ -424,10 +424,11 @@
                 "doctrine/coding-standard": "12.0.0",
                 "fig/log-test": "^1",
                 "jetbrains/phpstorm-stubs": "2023.1",
-                "phpstan/phpstan": "1.10.21",
+                "phpstan/phpstan": "1.10.29",
                 "phpstan/phpstan-strict-rules": "^1.5",
                 "phpunit/phpunit": "9.6.9",
                 "psalm/plugin-phpunit": "0.18.4",
+                "slevomat/coding-standard": "8.13.1",
                 "squizlabs/php_codesniffer": "3.7.2",
                 "symfony/cache": "^5.4|^6.0",
                 "symfony/console": "^4.4|^5.4|^6.0",
@@ -491,7 +492,7 @@
             ],
             "support": {
                 "issues": "https://github.com/doctrine/dbal/issues",
-                "source": "https://github.com/doctrine/dbal/tree/3.6.5"
+                "source": "https://github.com/doctrine/dbal/tree/3.6.6"
             },
             "funding": [
                 {
@@ -507,7 +508,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-07-17T09:15:50+00:00"
+            "time": "2023-08-17T05:38:17+00:00"
         },
         {
             "name": "doctrine/deprecations",
@@ -889,16 +890,16 @@
         },
         {
             "name": "dragonmantank/cron-expression",
-            "version": "v3.3.2",
+            "version": "v3.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/dragonmantank/cron-expression.git",
-                "reference": "782ca5968ab8b954773518e9e49a6f892a34b2a8"
+                "reference": "adfb1f505deb6384dc8b39804c5065dd3c8c8c0a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/dragonmantank/cron-expression/zipball/782ca5968ab8b954773518e9e49a6f892a34b2a8",
-                "reference": "782ca5968ab8b954773518e9e49a6f892a34b2a8",
+                "url": "https://api.github.com/repos/dragonmantank/cron-expression/zipball/adfb1f505deb6384dc8b39804c5065dd3c8c8c0a",
+                "reference": "adfb1f505deb6384dc8b39804c5065dd3c8c8c0a",
                 "shasum": ""
             },
             "require": {
@@ -938,7 +939,7 @@
             ],
             "support": {
                 "issues": "https://github.com/dragonmantank/cron-expression/issues",
-                "source": "https://github.com/dragonmantank/cron-expression/tree/v3.3.2"
+                "source": "https://github.com/dragonmantank/cron-expression/tree/v3.3.3"
             },
             "funding": [
                 {
@@ -946,7 +947,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-09-10T18:51:20+00:00"
+            "time": "2023-08-10T19:36:49+00:00"
         },
         {
             "name": "egulias/email-validator",
@@ -1799,16 +1800,16 @@
         },
         {
             "name": "laravel/framework",
-            "version": "v9.52.14",
+            "version": "v9.52.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/laravel/framework.git",
-                "reference": "5366a9035100f858589e1b43bbcb134ffcc81a73"
+                "reference": "e3350e87a52346af9cc655a3012d2175d2d05ad7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/laravel/framework/zipball/5366a9035100f858589e1b43bbcb134ffcc81a73",
-                "reference": "5366a9035100f858589e1b43bbcb134ffcc81a73",
+                "url": "https://api.github.com/repos/laravel/framework/zipball/e3350e87a52346af9cc655a3012d2175d2d05ad7",
+                "reference": "e3350e87a52346af9cc655a3012d2175d2d05ad7",
                 "shasum": ""
             },
             "require": {
@@ -1993,7 +1994,7 @@
                 "issues": "https://github.com/laravel/framework/issues",
                 "source": "https://github.com/laravel/framework"
             },
-            "time": "2023-08-02T14:58:02+00:00"
+            "time": "2023-08-08T14:28:40+00:00"
         },
         {
             "name": "laravel/serializable-closure",
@@ -2447,6 +2448,80 @@
             ],
             "time": "2023-08-05T12:09:49+00:00"
         },
+        {
+            "name": "monicahq/laravel-sabre",
+            "version": "1.7.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/monicahq/laravel-sabre.git",
+                "reference": "22d0d84dd7a774ea8cfba14538fc8feeb09ea261"
+            },
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+                "bin/vobject",
+                "bin/generate_vcards"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Sabre\\VObject\\": "lib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Evert Pot",
+                    "email": "me@evertpot.com",
+                    "homepage": "http://evertpot.com/",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Dominik Tobschall",
+                    "email": "dominik@fruux.com",
+                    "homepage": "http://tobschall.de/",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Ivan Enderlin",
+                    "email": "ivan.enderlin@hoa-project.net",
+                    "homepage": "http://mnt.io/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "The VObject library for PHP allows you to easily parse and manipulate iCalendar and vCard objects",
+            "homepage": "http://sabre.io/vobject/",
+            "keywords": [
+                "availability",
+                "freebusy",
+                "iCalendar",
+                "ical",
+                "ics",
+                "jCal",
+                "jCard",
+                "recurrence",
+                "rfc2425",
+                "rfc2426",
+                "rfc2739",
+                "rfc4770",
+                "rfc5545",
+                "rfc5546",
+                "rfc6321",
+                "rfc6350",
+                "rfc6351",
+                "rfc6474",
+                "rfc6638",
+                "rfc6715",
+                "rfc6868",
+                "vCalendar",
+                "vCard",
+                "vcf",
+                "xCal",
+                "xCard"
+            ],
+            "support": {
+                "forum": "https://groups.google.com/group/sabredav-discuss",
+                "issues": "https://github.com/sabre-io/vobject/issues",
+                "source": "https://github.com/fruux/sabre-vobject"
+            },
+            "time": "2023-01-22T12:21:50+00:00"
+        },
+        {
+            "name": "sabre/xml",
+            "version": "2.2.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sabre-io/xml.git",
+                "reference": "9cde7cdab1e50893cc83b037b40cd47bfde42a2b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sabre-io/xml/zipball/9cde7cdab1e50893cc83b037b40cd47bfde42a2b",
+                "reference": "9cde7cdab1e50893cc83b037b40cd47bfde42a2b",
+                "shasum": ""
+            },
+            "require": {
+                "ext-dom": "*",
+                "ext-xmlreader": "*",
+                "ext-xmlwriter": "*",
+                "lib-libxml": ">=2.6.20",
+                "php": "^7.1 || ^8.0",
+                "sabre/uri": ">=1.0,<3.0.0"
+            },
+            "require-dev": {
+                "friendsofphp/php-cs-fixer": "~2.17.1",
+                "phpstan/phpstan": "^0.12",
+                "phpunit/phpunit": "^7.5 || ^8.5 || ^9.0"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "lib/Deserializer/functions.php",
+                    "lib/Serializer/functions.php"
+                ],
+                "psr-4": {
+                    "Sabre\\Xml\\": "lib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Evert Pot",
+                    "email": "me@evertpot.com",
+                    "homepage": "http://evertpot.com/",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Markus Staab",
+                    "email": "markus.staab@redaxo.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "sabre/xml is an XML library that you may not hate.",
+            "homepage": "https://sabre.io/xml/",
+            "keywords": [
+                "XMLReader",
+                "XMLWriter",
+                "dom",
+                "xml"
+            ],
+            "support": {
+                "forum": "https://groups.google.com/group/sabredav-discuss",
+                "issues": "https://github.com/sabre-io/xml/issues",
+                "source": "https://github.com/fruux/sabre-xml"
+            },
+            "time": "2023-06-28T12:56:05+00:00"
+        },
         {
             "name": "sebastian/cli-parser",
             "version": "1.0.1",
@@ -8205,6 +8780,145 @@
             ],
             "time": "2023-01-20T17:44:14+00:00"
         },
+        {
+            "name": "thecodingmachine/safe",
+            "version": "v2.5.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/thecodingmachine/safe.git",
+                "reference": "3115ecd6b4391662b4931daac4eba6b07a2ac1f0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/thecodingmachine/safe/zipball/3115ecd6b4391662b4931daac4eba6b07a2ac1f0",
+                "reference": "3115ecd6b4391662b4931daac4eba6b07a2ac1f0",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^8.0"
+            },
+            "require-dev": {
+                "phpstan/phpstan": "^1.5",
+                "phpunit/phpunit": "^9.5",
+                "squizlabs/php_codesniffer": "^3.2",
+                "thecodingmachine/phpstan-strict-rules": "^1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.2.x-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "deprecated/apc.php",
+                    "deprecated/array.php",
+                    "deprecated/datetime.php",
+                    "deprecated/libevent.php",
+                    "deprecated/misc.php",
+                    "deprecated/password.php",
+                    "deprecated/mssql.php",
+                    "deprecated/stats.php",
+                    "deprecated/strings.php",
+                    "lib/special_cases.php",
+                    "deprecated/mysqli.php",
+                    "generated/apache.php",
+                    "generated/apcu.php",
+                    "generated/array.php",
+                    "generated/bzip2.php",
+                    "generated/calendar.php",
+                    "generated/classobj.php",
+                    "generated/com.php",
+                    "generated/cubrid.php",
+                    "generated/curl.php",
+                    "generated/datetime.php",
+                    "generated/dir.php",
+                    "generated/eio.php",
+                    "generated/errorfunc.php",
+                    "generated/exec.php",
+                    "generated/fileinfo.php",
+                    "generated/filesystem.php",
+                    "generated/filter.php",
+                    "generated/fpm.php",
+                    "generated/ftp.php",
+                    "generated/funchand.php",
+                    "generated/gettext.php",
+                    "generated/gmp.php",
+                    "generated/gnupg.php",
+                    "generated/hash.php",
+                    "generated/ibase.php",
+                    "generated/ibmDb2.php",
+                    "generated/iconv.php",
+                    "generated/image.php",
+                    "generated/imap.php",
+                    "generated/info.php",
+                    "generated/inotify.php",
+                    "generated/json.php",
+                    "generated/ldap.php",
+                    "generated/libxml.php",
+                    "generated/lzf.php",
+                    "generated/mailparse.php",
+                    "generated/mbstring.php",
+                    "generated/misc.php",
+                    "generated/mysql.php",
+                    "generated/network.php",
+                    "generated/oci8.php",
+                    "generated/opcache.php",
+                    "generated/openssl.php",
+                    "generated/outcontrol.php",
+                    "generated/pcntl.php",
+                    "generated/pcre.php",
+                    "generated/pgsql.php",
+                    "generated/posix.php",
+                    "generated/ps.php",
+                    "generated/pspell.php",
+                    "generated/readline.php",
+                    "generated/rpminfo.php",
+                    "generated/rrd.php",
+                    "generated/sem.php",
+                    "generated/session.php",
+                    "generated/shmop.php",
+                    "generated/sockets.php",
+                    "generated/sodium.php",
+                    "generated/solr.php",
+                    "generated/spl.php",
+                    "generated/sqlsrv.php",
+                    "generated/ssdeep.php",
+                    "generated/ssh2.php",
+                    "generated/stream.php",
+                    "generated/strings.php",
+                    "generated/swoole.php",
+                    "generated/uodbc.php",
+                    "generated/uopz.php",
+                    "generated/url.php",
+                    "generated/var.php",
+                    "generated/xdiff.php",
+                    "generated/xml.php",
+                    "generated/xmlrpc.php",
+                    "generated/yaml.php",
+                    "generated/yaz.php",
+                    "generated/zip.php",
+                    "generated/zlib.php"
+                ],
+                "classmap": [
+                    "lib/DateTime.php",
+                    "lib/DateTimeImmutable.php",
+                    "lib/Exceptions/",
+                    "deprecated/Exceptions/",
+                    "generated/Exceptions/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHP core functions that throw exceptions instead of returning FALSE on error",
+            "support": {
+                "issues": "https://github.com/thecodingmachine/safe/issues",
+                "source": "https://github.com/thecodingmachine/safe/tree/v2.5.0"
+            },
+            "time": "2023-04-05T11:54:14+00:00"
+        },
         {
             "name": "theseer/tokenizer",
             "version": "1.2.1",
@@ -8937,16 +9651,16 @@
         },
         {
             "name": "mockery/mockery",
-            "version": "1.6.5",
+            "version": "1.6.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/mockery/mockery.git",
-                "reference": "68782e943f9ffcbc72bda08aedabe73fecb50041"
+                "reference": "b8e0bb7d8c604046539c1115994632c74dcb361e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/mockery/mockery/zipball/68782e943f9ffcbc72bda08aedabe73fecb50041",
-                "reference": "68782e943f9ffcbc72bda08aedabe73fecb50041",
+                "url": "https://api.github.com/repos/mockery/mockery/zipball/b8e0bb7d8c604046539c1115994632c74dcb361e",
+                "reference": "b8e0bb7d8c604046539c1115994632c74dcb361e",
                 "shasum": ""
             },
             "require": {
@@ -9018,7 +9732,7 @@
                 "security": "https://github.com/mockery/mockery/security/advisories",
                 "source": "https://github.com/mockery/mockery"
             },
-            "time": "2023-08-06T00:30:34+00:00"
+            "time": "2023-08-09T00:03:52+00:00"
         },
         {
             "name": "nunomaduro/collision",
diff --git a/flexiapi/config/app.php b/flexiapi/config/app.php
index 8f4f023..473f870 100644
--- a/flexiapi/config/app.php
+++ b/flexiapi/config/app.php
@@ -228,6 +228,7 @@ return [
         App\Providers\EventServiceProvider::class,
         App\Providers\RouteServiceProvider::class,
         App\Providers\HelperServiceProvider::class,
+        App\Providers\DAVServiceProvider::class,
 
     ],
 
diff --git a/flexiapi/config/laravelsabre.php b/flexiapi/config/laravelsabre.php
new file mode 100644
index 0000000..651e580
--- /dev/null
+++ b/flexiapi/config/laravelsabre.php
@@ -0,0 +1,59 @@
+<?php
+
+use LaravelSabre\Http\Middleware\Authorize;
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | LaravelSabre Domain
+    |--------------------------------------------------------------------------
+    |
+    | This is the subdomain where LaravelSabre will be accessible from. If the
+    | setting is null, LaravelSabre will reside under the same domain as the
+    | application. Otherwise, this value will be used as the subdomain.
+    |
+    */
+
+    'domain' => null,
+
+    /*
+    |--------------------------------------------------------------------------
+    | LaravelSabre Path
+    |--------------------------------------------------------------------------
+    |
+    | This is the URI path where LaravelSabre will be accessible from. Feel free
+    | to change this path to anything you like.
+    |
+    */
+
+    'path' => 'dav',
+
+    /*
+    |--------------------------------------------------------------------------
+    | LaravelSabre Master Switch
+    |--------------------------------------------------------------------------
+    |
+    | This option may be used to disable LaravelSabre.
+    |
+    */
+
+    'enabled' => env('LARAVELSABRE_ENABLED', true),
+
+    /*
+    |--------------------------------------------------------------------------
+    | LaravelSabre Route Middleware
+    |--------------------------------------------------------------------------
+    |
+    | These middleware will be assigned to every LaravelSabre route, giving you
+    | the chance to add your own middleware to this list or change any of
+    | the existing middleware. Or, you can simply stick with this list.
+    |
+    */
+
+    'middleware' => [
+        'web',
+        Authorize::class,
+    ],
+
+];