inital

2025-04-23 18:55:51 +02:00 · 2025-04-23 18:55:51 +02:00 · 926a6d7bc1
commit 926a6d7bc1
parent b870378fae
58 changed files with 5132 additions and 58 deletions
--- a/.cursor/rules/react.mdc
+++ b/.cursor/rules/react.mdc
@ -6,4 +6,9 @@ alwaysApply: true

 # React components
 1. You will always provide a maintainable folder structure when adding or updating react components.
-2. You will reuse common components
+2. You will reuse common components
+
+# Folders
+- components: general reusable components
+- pages: specific components related to the domain and the application
+- lib: plain typescript for building the domain logic, services etc. you will never put react code in here
--- a/.cursor/rules/symfony.mdc
+++ b/.cursor/rules/symfony.mdc
@ -0,0 +1,8 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+# Updating / Creating Entities 
+When updating or creating entities, always update and the related DTO classes. 
+DTO Classes are a representation of a JSON Schema
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@ -0,0 +1,7 @@
+{
+    "phpstan.binPath": "backend/vendor/bin/phpstan",
+    "phpstan.configFile": "backend/phpstan.dist.neon",
+    "phpstan.checkValidity": true,
+    "phpstan.showTypeOnHover": false,
+    "phpstan.showProgress": true
+}
--- a/backend/.env
+++ b/backend/.env
@ -18,3 +18,13 @@
 APP_ENV=dev
 APP_SECRET=71bf50bfb778d456b3a376ff60d5dcd8
 ###< symfony/framework-bundle ###
+
+###> doctrine/doctrine-bundle ###
+# Format described at https://www.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html#connecting-using-a-url
+# IMPORTANT: You MUST configure your server version, either here or in config/packages/doctrine.yaml
+#
+# DATABASE_URL="sqlite:///%kernel.project_dir%/var/data.db"
+# DATABASE_URL="mysql://app:!ChangeMe!@127.0.0.1:3306/app?serverVersion=8.0.32&charset=utf8mb4"
+# DATABASE_URL="mysql://app:!ChangeMe!@127.0.0.1:3306/app?serverVersion=10.11.2-MariaDB&charset=utf8mb4"
+DATABASE_URL="postgresql://postgres:postgres@postgres:5432/postgres?serverVersion=16&charset=utf8"
+###< doctrine/doctrine-bundle ###
--- a/backend/.env.dev
+++ b/backend/.env.dev
--- a/backend/.gitignore
+++ b/backend/.gitignore
@ -8,3 +8,7 @@
 /var/
 /vendor/
 ###< symfony/framework-bundle ###
+
+###> phpstan/phpstan ###
+phpstan.neon
+###< phpstan/phpstan ###
--- a/backend/README.md
+++ b/backend/README.md
@ -0,0 +1,38 @@
+# Domain-Driven Design Structure
+
+This project follows Domain-Driven Design (DDD) principles with the following structure:
+
+## Application Layer
+Contains application-specific logic and serves as the entry point for external requests.
+
+- **Controller**: HTTP controllers that handle web requests
+- **DTO**: Data Transfer Objects for API request/response
+
+## Domain Layer
+Contains the core business logic and domain models.
+
+- **Model**: Domain entities representing the core business concepts
+
+## Infrastructure Layer
+Provides technical capabilities that support the higher layers.
+
+- **Repository**: Data access logic for persisting and retrieving domain objects
+- **DataFixtures**: Test data fixtures for development and testing
+
+## Shared
+Contains cross-cutting concerns and utilities used across all layers.
+
+## Folder Structure
+
+```
+src/
+├── Application/
+│   ├── Controller/
+│   └── DTO/
+├── Domain/
+│   └── Model/
+├── Infrastructure/
+│   ├── Repository/
+│   └── DataFixtures/
+└── Shared/
+``` 
--- a/backend/composer.json
+++ b/backend/composer.json
@ -7,14 +7,25 @@
        "php": ">=8.1",
        "ext-ctype": "*",
        "ext-iconv": "*",
+        "doctrine/annotations": "^2.0",
+        "doctrine/doctrine-bundle": "^2.14",
+        "doctrine/doctrine-migrations-bundle": "^3.4",
+        "doctrine/orm": "^3.3",
        "nelmio/api-doc-bundle": "^5.0",
+        "phpdocumentor/reflection-docblock": "^5.6",
+        "phpstan/phpdoc-parser": "^2.1",
        "symfony/asset": "6.4.*",
        "symfony/console": "6.4.*",
        "symfony/dotenv": "6.4.*",
        "symfony/flex": "^2",
        "symfony/framework-bundle": "6.4.*",
+        "symfony/property-access": "6.4.*",
+        "symfony/property-info": "6.4.*",
        "symfony/runtime": "6.4.*",
+        "symfony/serializer": "6.4.*",
        "symfony/twig-bundle": "6.4.*",
+        "symfony/uid": "6.4.*",
+        "symfony/validator": "6.4.*",
        "symfony/yaml": "6.4.*"
    },
    "config": {
@ -54,7 +65,9 @@
        ],
        "post-update-cmd": [
            "@auto-scripts"
-        ]
+        ],
+        "phpstan": "phpstan analyse --ansi",
+        "rebuild-db": "php bin/console doctrine:schema:drop --force && php bin/console doctrine:schema:update --force && php bin/console doctrine:fixtures:load --no-interaction"
    },
    "conflict": {
        "symfony/symfony": "*"
@ -64,5 +77,11 @@
            "allow-contrib": false,
            "require": "6.4.*"
        }
+    },
+    "require-dev": {
+        "doctrine/doctrine-fixtures-bundle": "^4.1",
+        "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan-symfony": "^2.0",
+        "symfony/maker-bundle": "^1.62"
    }
 }
--- a/backend/composer.lock
+++ b/backend/composer.lock
--- a/backend/config/bundles.php
+++ b/backend/config/bundles.php
@ -4,4 +4,8 @@ return [
    Symfony\Bundle\FrameworkBundle\FrameworkBundle::class => ['all' => true],
    Nelmio\ApiDocBundle\NelmioApiDocBundle::class => ['all' => true],
    Symfony\Bundle\TwigBundle\TwigBundle::class => ['all' => true],
+    Doctrine\Bundle\DoctrineBundle\DoctrineBundle::class => ['all' => true],
+    Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle::class => ['all' => true],
+    Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle::class => ['dev' => true, 'test' => true],
+    Symfony\Bundle\MakerBundle\MakerBundle::class => ['dev' => true],
 ];
--- a/backend/config/packages/doctrine.yaml
+++ b/backend/config/packages/doctrine.yaml
@ -0,0 +1,51 @@
+doctrine:
+    dbal:
+        url: '%env(resolve:DATABASE_URL)%'
+
+        # IMPORTANT: You MUST configure your server version,
+        # either here or in the DATABASE_URL env var (see .env file)
+        #server_version: '16'
+
+        profiling_collect_backtrace: '%kernel.debug%'
+        use_savepoints: true
+        driver: 'pdo_pgsql'
+    orm:
+        auto_generate_proxy_classes: true
+        enable_lazy_ghost_objects: true
+        report_fields_where_declared: true
+        validate_xml_mapping: true
+        naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
+        auto_mapping: true
+        mappings:
+            App:
+                type: attribute
+                is_bundle: false
+                dir: '%kernel.project_dir%/src/Domain/Model'
+                prefix: 'App\Domain\Model'
+                alias: App
+
+when@test:
+    doctrine:
+        dbal:
+            # "TEST_TOKEN" is typically set by ParaTest
+            dbname_suffix: '_test%env(default::TEST_TOKEN)%'
+
+when@prod:
+    doctrine:
+        orm:
+            auto_generate_proxy_classes: false
+            proxy_dir: '%kernel.build_dir%/doctrine/orm/Proxies'
+            query_cache_driver:
+                type: pool
+                pool: doctrine.system_cache_pool
+            result_cache_driver:
+                type: pool
+                pool: doctrine.result_cache_pool
+
+    framework:
+        cache:
+            pools:
+                doctrine.result_cache_pool:
+                    adapter: cache.app
+                doctrine.system_cache_pool:
+                    adapter: cache.system
--- a/backend/config/packages/doctrine_migrations.yaml
+++ b/backend/config/packages/doctrine_migrations.yaml
@ -0,0 +1,6 @@
+doctrine_migrations:
+    migrations_paths:
+        # namespace is arbitrary but should be different from App\Migrations
+        # as migrations classes should NOT be autoloaded
+        'DoctrineMigrations': '%kernel.project_dir%/migrations'
+    enable_profiler: false
--- a/backend/config/packages/nelmio_api_doc.yaml
+++ b/backend/config/packages/nelmio_api_doc.yaml
@ -4,6 +4,10 @@ nelmio_api_doc:
            title: Calendi API
            description: API Documentation for Calendi
            version: 1.0.0
+        components:
+            schemas:
+                directory: "%kernel.project_dir%/public/schema"
+                type: json
    areas:
        path_patterns:
            - ^/api(?!/doc$)
--- a/backend/config/packages/uid.yaml
+++ b/backend/config/packages/uid.yaml
@ -0,0 +1,4 @@
+framework:
+    uid:
+        default_uuid_version: 7
+        time_based_uuid_version: 7
--- a/backend/config/packages/validator.yaml
+++ b/backend/config/packages/validator.yaml
@ -0,0 +1,13 @@
+framework:
+    validation:
+        email_validation_mode: html5
+
+        # Enables validator auto-mapping support.
+        # For instance, basic validation constraints will be inferred from Doctrine's metadata.
+        #auto_mapping:
+        #    App\Entity\: []
+
+when@test:
+    framework:
+        validation:
+            not_compromised_password: false
--- a/backend/config/routes.yaml
+++ b/backend/config/routes.yaml
@ -1,5 +1,5 @@
 controllers:
    resource:
-        path: ../src/Controller/
-        namespace: App\Controller
+        path: ../src/Application/Controller/
+        namespace: App\Application\Controller
    type: attribute
--- a/backend/phpstan.dist.neon
+++ b/backend/phpstan.dist.neon
@ -0,0 +1,10 @@
+parameters:
+	level: 10
+	paths:
+		- src
+	symfony:
+		containerXmlPath: var/cache/dev/App_KernelDevDebugContainer.xml
+
+includes:
+	- vendor/phpstan/phpstan-symfony/extension.neon
+	- vendor/phpstan/phpstan-symfony/rules.neon 
--- a/backend/src/Application/Controller/CalendarController.php
+++ b/backend/src/Application/Controller/CalendarController.php
@ -0,0 +1,53 @@
+<?php
+
+namespace App\Application\Controller;
+
+use App\Infrastructure\Repository\EventRepository;
+use App\Application\DTO\CalendarDTO;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Attribute\Route;
+use OpenApi\Attributes as OA;
+use Nelmio\ApiDocBundle\Attribute\Model;
+
+
+#[Route('/api/calendar', name: 'api_calendar_')]
+class CalendarController extends AbstractController
+{
+    public function __construct(
+        private readonly EventRepository $eventRepository
+    ) {
+    }
+
+    #[Route('', name: 'get', methods: ['GET'])]
+    #[OA\Tag(name: 'Calendar')]
+    #[OA\Response(
+        response: 200,
+        description: 'Returns calendar data with events',
+        content: new OA\JsonContent(
+            ref: new Model(type: CalendarDTO::class)
+        )
+    )]
+    public function getCalendar(Request $request): JsonResponse
+    {
+        $start = $request->query->get('start');
+        $end = $request->query->get('end');
+
+        if (!$start || !$end) {
+            // Default to current month if not specified
+            $now = new \DateTimeImmutable();
+            $start = $now->modify('first day of this month')->setTime(0, 0);
+            $end = $now->modify('last day of this month')->setTime(23, 59, 59);
+        } else {
+            $start = new \DateTimeImmutable($start);
+            $end = new \DateTimeImmutable($end);
+        }
+
+        $events = $this->eventRepository->findByDateRange($start, $end);
+
+        return $this->json([
+            'events' => $events,
+        ]);
+    }
+} 
--- a/backend/src/Application/Controller/EventController.php
+++ b/backend/src/Application/Controller/EventController.php
@ -0,0 +1,243 @@
+<?php
+
+namespace App\Application\Controller;
+
+use App\Domain\Model\Event;
+use App\Infrastructure\Repository\EventRepository;
+use App\Application\DTO\EventDTO;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+use Nelmio\ApiDocBundle\Attribute\Model;
+use OpenApi\Attributes as OA;
+
+#[Route('/api/events', name: 'api_events_')]
+class EventController extends AbstractController
+{
+    public function __construct(
+        private readonly EntityManagerInterface $entityManager,
+        private readonly ValidatorInterface $validator,
+        private readonly EventRepository $eventRepository
+    ) {
+    }
+
+    #[Route('', name: 'list', methods: ['GET'])]
+    #[OA\Tag(name: 'Events')]
+    #[OA\Response(
+        response: 200,
+        description: 'Returns list of events',
+        content: new OA\JsonContent(ref: new Model(type: EventDTO::class))
+    )]
+    public function list(): JsonResponse
+    {
+        /** @var Event[] $events */
+        $events = $this->eventRepository->findAll();
+        $eventDTOs = array_map(static fn (Event $event) => EventDTO::fromEntity($event), $events);
+
+        return $this->json($eventDTOs);
+    }
+
+    #[Route('/{id}', name: 'get', methods: ['GET'])]
+    #[OA\Tag(name: 'Events')]
+    #[OA\Parameter(
+        name: 'id',
+        description: 'Event ID',
+        in: 'path',
+        required: true,
+        schema: new OA\Schema(type: 'string')
+    )]
+    #[OA\Response(
+        response: 200,
+        description: 'Returns event details',
+        content: new OA\JsonContent(ref: new Model(type: EventDTO::class))
+    )]
+    #[OA\Response(
+        response: 404,
+        description: 'Event not found'
+    )]
+    public function get(string $id): JsonResponse
+    {
+        $event = $this->eventRepository->find($id);
+        
+        if (!$event instanceof Event) {
+            return $this->json(['error' => 'Event not found'], Response::HTTP_NOT_FOUND);
+        }
+
+        return $this->json(EventDTO::fromEntity($event));
+    }
+
+    #[Route('', name: 'create', methods: ['POST'])]
+    #[OA\Tag(name: 'Events')]
+    #[OA\RequestBody(
+        required: true,
+        content: new OA\JsonContent(ref: new Model(type: EventDTO::class))
+    )]
+    #[OA\Response(
+        response: 201,
+        description: 'Event created',
+        content: new OA\JsonContent(ref: new Model(type: EventDTO::class))
+    )]
+    #[OA\Response(
+        response: 400,
+        description: 'Invalid input'
+    )]
+    public function create(Request $request): JsonResponse
+    {
+        /** @var array<string, mixed>|null $data */
+        $data = json_decode($request->getContent(), true);
+        
+        if (!is_array($data)) {
+            return $this->json(['error' => 'Invalid JSON'], Response::HTTP_BAD_REQUEST);
+        }
+
+        $event = new Event();
+        $event->setTitle((string)$data['title']);
+        
+        if (array_key_exists('description', $data)) {
+            $event->setDescription($data['description'] !== null ? (string)$data['description'] : null);
+        }
+        
+        try {
+            $event->setStart(new \DateTimeImmutable($data['start'] ?? 'now'));
+            $event->setEnd(new \DateTimeImmutable($data['end'] ?? 'now'));
+        } catch (\Exception) {
+            return $this->json(['error' => 'Invalid date format'], Response::HTTP_BAD_REQUEST);
+        }
+        
+        $event->setAllDay(isset($data['allDay']) ? (bool)$data['allDay'] : false);
+
+        $errors = $this->validator->validate($event);
+        if (count($errors) > 0) {
+            $errorMessages = [];
+            foreach ($errors as $error) {
+                $errorMessages[$error->getPropertyPath()] = $error->getMessage();
+            }
+            
+            return $this->json(['errors' => $errorMessages], Response::HTTP_BAD_REQUEST);
+        }
+
+        $this->entityManager->persist($event);
+        $this->entityManager->flush();
+
+        return $this->json(EventDTO::fromEntity($event), Response::HTTP_CREATED);
+    }
+
+    #[Route('/{id}', name: 'update', methods: ['PUT'])]
+    #[OA\Tag(name: 'Events')]
+    #[OA\Parameter(
+        name: 'id',
+        description: 'Event ID',
+        in: 'path',
+        required: true,
+        schema: new OA\Schema(type: 'string')
+    )]
+    #[OA\RequestBody(
+        required: true,
+        content: new OA\JsonContent(ref: new Model(type: EventDTO::class))
+    )]
+    #[OA\Response(
+        response: 200,
+        description: 'Event updated',
+        content: new OA\JsonContent(ref: new Model(type: EventDTO::class))
+    )]
+    #[OA\Response(
+        response: 400,
+        description: 'Invalid input'
+    )]
+    #[OA\Response(
+        response: 404,
+        description: 'Event not found'
+    )]
+    public function update(string $id, Request $request): JsonResponse
+    {
+        $event = $this->eventRepository->find($id);
+        
+        if (!$event instanceof Event) {
+            return $this->json(['error' => 'Event not found'], Response::HTTP_NOT_FOUND);
+        }
+
+        /** @var array<string, mixed>|null $data */
+        $data = json_decode($request->getContent(), true);
+        
+        if (!is_array($data)) {
+            return $this->json(['error' => 'Invalid JSON'], Response::HTTP_BAD_REQUEST);
+        }
+
+        if (isset($data['title'])) {
+            $event->setTitle((string)$data['title']);
+        }
+        
+        if (array_key_exists('description', $data)) {
+            $event->setDescription($data['description'] !== null ? (string)$data['description'] : null);
+        }
+        
+        if (isset($data['start'])) {
+            try {
+                $event->setStart(new \DateTimeImmutable((string)$data['start']));
+            } catch (\Exception) {
+                return $this->json(['error' => 'Invalid start date format'], Response::HTTP_BAD_REQUEST);
+            }
+        }
+        
+        if (isset($data['end'])) {
+            try {
+                $event->setEnd(new \DateTimeImmutable((string)$data['end']));
+            } catch (\Exception) {
+                return $this->json(['error' => 'Invalid end date format'], Response::HTTP_BAD_REQUEST);
+            }
+        }
+        
+        if (isset($data['allDay'])) {
+            $event->setAllDay((bool)$data['allDay']);
+        }
+
+        $errors = $this->validator->validate($event);
+        if (count($errors) > 0) {
+            $errorMessages = [];
+            foreach ($errors as $error) {
+                $errorMessages[$error->getPropertyPath()] = $error->getMessage();
+            }
+            
+            return $this->json(['errors' => $errorMessages], Response::HTTP_BAD_REQUEST);
+        }
+
+        $this->entityManager->flush();
+
+        return $this->json(EventDTO::fromEntity($event));
+    }
+
+    #[Route('/{id}', name: 'delete', methods: ['DELETE'])]
+    #[OA\Tag(name: 'Events')]
+    #[OA\Parameter(
+        name: 'id',
+        description: 'Event ID',
+        in: 'path',
+        required: true,
+        schema: new OA\Schema(type: 'string')
+    )]
+    #[OA\Response(
+        response: 204,
+        description: 'Event deleted'
+    )]
+    #[OA\Response(
+        response: 404,
+        description: 'Event not found'
+    )]
+    public function delete(string $id): JsonResponse
+    {
+        $event = $this->eventRepository->find($id);
+        
+        if (!$event instanceof Event) {
+            return $this->json(['error' => 'Event not found'], Response::HTTP_NOT_FOUND);
+        }
+
+        $this->entityManager->remove($event);
+        $this->entityManager->flush();
+
+        return $this->json(null, Response::HTTP_NO_CONTENT);
+    }
+}
--- a/backend/src/Application/Controller/PingController.php
+++ b/backend/src/Application/Controller/PingController.php
@ -1,6 +1,6 @@
 <?php

-namespace App\Controller;
+namespace App\Application\Controller;

 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\JsonResponse;
--- a/backend/src/Application/Controller/UserController.php
+++ b/backend/src/Application/Controller/UserController.php
@ -0,0 +1,41 @@
+<?php
+
+namespace App\Application\Controller;
+
+use App\Application\DTO\UserDTO;
+use App\Infrastructure\Repository\UserRepository;
+use Nelmio\ApiDocBundle\Attribute\Model;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\Routing\Attribute\Route;
+use OpenApi\Attributes as OA;
+
+#[Route('/api/user', name: 'api_user_')]
+class UserController extends AbstractController
+{
+    public function __construct(
+        private readonly UserRepository $userRepository
+    ) {
+    }
+
+    #[Route('', name: 'user_current', methods: ['GET'])]
+    #[OA\Tag(name: 'User')]
+    #[OA\Response(
+        response: 200,
+        description: 'Returns the current user',
+        content: new OA\JsonContent(
+            ref: new Model(type: UserDTO::class)
+        )
+    )]
+    public function getCurrentUser(): JsonResponse
+    {
+        $user = $this->userRepository->findOneBy([]);
+        
+        if (!$user) {
+            throw new NotFoundHttpException('No user found');
+        }
+        
+        return $this->json(UserDTO::fromEntity($user));
+    }
+} 
--- a/backend/src/Application/DTO/CalendarDTO.php
+++ b/backend/src/Application/DTO/CalendarDTO.php
@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Application\DTO;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Schema]
+final readonly class CalendarDTO
+{
+    /**
+     * @param array<EventDTO> $events
+     */
+    public function __construct(
+        #[OA\Property(type: 'array', items: new OA\Items(ref: "#/components/schemas/EventDTO"))]
+        public array $events = []
+    ) {
+    }
+
+    public function addEvent(EventDTO $event): self
+    {
+        $events = $this->events;
+        $events[] = $event;
+        
+        return new self($events);
+    }
+} 
--- a/backend/src/Application/DTO/EventDTO.php
+++ b/backend/src/Application/DTO/EventDTO.php
@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Application\DTO;
+
+use App\Domain\Model\Event;
+use OpenApi\Attributes as OA;
+
+#[OA\Schema]
+final readonly class EventDTO
+{
+    public function __construct(
+        #[OA\Property(type: 'string')]
+        public string $id,
+        #[OA\Property(type: 'string')]
+        public string $title,
+        #[OA\Property(type: 'string')]
+        public string $description,
+        #[OA\Property(type: 'string')]
+        public string $start,
+        #[OA\Property(type: 'string')]
+        public string $end,
+        #[OA\Property(type: 'boolean')]
+        public bool $allDay
+    ) {
+    }
+
+    public static function fromEntity(Event $event): self
+    {
+        return new self(
+            $event->getId(),
+            $event->getTitle(),
+            $event->getDescription() ?? '',
+            $event->getFrom()->format('Y-m-d H:i:s'),
+            $event->getTo()->format('Y-m-d H:i:s'),
+            $event->isAllDay()
+        );
+    }
+}
--- a/backend/src/Application/DTO/UserDTO.php
+++ b/backend/src/Application/DTO/UserDTO.php
@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Application\DTO;
+
+use App\Domain\Model\User;
+use OpenApi\Attributes as OA;
+
+#[OA\Schema]
+final readonly class UserDTO
+{
+    public function __construct(
+        #[OA\Property(type: 'string')]
+        public string $id,
+        #[OA\Property(type: 'string')]
+        public string $email,
+        #[OA\Property(type: 'string')]
+        public string $firstName,
+        #[OA\Property(type: 'string')]
+        public string $lastName,
+        #[OA\Property(type: 'string')]
+        public string $fullName
+    ) {
+    }
+
+    public static function fromEntity(User $user): self
+    {
+        return new self(
+            $user->getId(),
+            $user->getEmail(),
+            $user->getFirstName(),
+            $user->getLastName(),
+            $user->getFullName()
+        );
+    }
+} 
--- a/backend/src/Domain/Model/Event.php
+++ b/backend/src/Domain/Model/Event.php
@ -0,0 +1,131 @@
+<?php
+
+namespace App\Domain\Model;
+
+use App\Infrastructure\Repository\EventRepository;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Validator\Constraints as Assert;
+use Symfony\Component\Uid\Uuid;
+
+#[ORM\Entity(repositoryClass: EventRepository::class)]
+#[ORM\Table(name: 'app_event')]
+class Event
+{
+    #[ORM\Id]
+    #[ORM\Column(type: 'string')]
+    private string $id;
+
+    #[ORM\Column(type: 'string', length: 255)]
+    #[Assert\NotBlank]
+    private string $title;
+
+    #[ORM\Column(type: 'text', nullable: true)]
+    private ?string $description = null;
+
+    #[ORM\Column(type: Types::DATETIME_IMMUTABLE, name: 'event_from')]
+    #[Assert\NotNull]
+    private \DateTimeImmutable $from;
+
+    #[ORM\Column(type: Types::DATETIME_IMMUTABLE, name: 'event_to')]
+    #[Assert\NotNull]
+    #[Assert\GreaterThanOrEqual(propertyPath: 'from')]
+    private \DateTimeImmutable $to;
+
+    #[ORM\Column(type: 'boolean')]
+    private bool $allDay = false;
+
+    public function __construct()
+    {
+        $this->id = Uuid::v4()->toRfc4122();
+    }
+
+    public function getId(): string
+    {
+        return $this->id;
+    }
+
+    public function getTitle(): string
+    {
+        return $this->title;
+    }
+
+    public function setTitle(string $title): self
+    {
+        $this->title = $title;
+        
+        return $this;
+    }
+
+    public function getDescription(): ?string
+    {
+        return $this->description;
+    }
+
+    public function setDescription(?string $description): self
+    {
+        $this->description = $description;
+        
+        return $this;
+    }
+
+    public function getStart(): \DateTimeImmutable
+    {
+        return $this->from;
+    }
+
+    public function setStart(\DateTimeImmutable $start): self
+    {
+        $this->from = $start;
+        
+        return $this;
+    }
+    
+    public function getFrom(): \DateTimeImmutable
+    {
+        return $this->from;
+    }
+
+    public function setFrom(\DateTimeImmutable $from): self
+    {
+        $this->from = $from;
+        
+        return $this;
+    }
+
+    public function getEnd(): \DateTimeImmutable
+    {
+        return $this->to;
+    }
+
+    public function setEnd(\DateTimeImmutable $end): self
+    {
+        $this->to = $end;
+        
+        return $this;
+    }
+    
+    public function getTo(): \DateTimeImmutable
+    {
+        return $this->to;
+    }
+
+    public function setTo(\DateTimeImmutable $to): self
+    {
+        $this->to = $to;
+        
+        return $this;
+    }
+
+    public function isAllDay(): bool
+    {
+        return $this->allDay;
+    }
+
+    public function setAllDay(bool $allDay): self
+    {
+        $this->allDay = $allDay;
+        
+        return $this;
+    }
+} 
--- a/backend/src/Domain/Model/User.php
+++ b/backend/src/Domain/Model/User.php
@ -0,0 +1,81 @@
+<?php
+
+namespace App\Domain\Model;
+
+use App\Infrastructure\Repository\UserRepository;
+use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Validator\Constraints as Assert;
+use Symfony\Component\Uid\Uuid;
+
+#[ORM\Entity(repositoryClass: UserRepository::class)]
+#[ORM\Table(name: 'app_user')]
+class User
+{
+    #[ORM\Id]
+    #[ORM\Column(type: 'string')]
+    private string $id;
+
+    #[ORM\Column(type: 'string', length: 255, unique: true)]
+    #[Assert\NotBlank]
+    #[Assert\Email]
+    private string $email;
+
+    #[ORM\Column(type: 'string', length: 255)]
+    #[Assert\NotBlank]
+    private string $firstName;
+
+    #[ORM\Column(type: 'string', length: 255)]
+    #[Assert\NotBlank]
+    private string $lastName;
+
+    public function __construct()
+    {
+        $this->id = Uuid::v4()->toRfc4122();
+    }
+
+    public function getId(): string
+    {
+        return $this->id;
+    }
+
+    public function getEmail(): string
+    {
+        return $this->email;
+    }
+
+    public function setEmail(string $email): self
+    {
+        $this->email = $email;
+        
+        return $this;
+    }
+
+    public function getFirstName(): string
+    {
+        return $this->firstName;
+    }
+
+    public function setFirstName(string $firstName): self
+    {
+        $this->firstName = $firstName;
+        
+        return $this;
+    }
+
+    public function getLastName(): string
+    {
+        return $this->lastName;
+    }
+
+    public function setLastName(string $lastName): self
+    {
+        $this->lastName = $lastName;
+        
+        return $this;
+    }
+
+    public function getFullName(): string
+    {
+        return "$this->firstName $this->lastName";
+    }
+} 
--- a/backend/src/Infrastructure/DataFixtures/AppFixtures.php
+++ b/backend/src/Infrastructure/DataFixtures/AppFixtures.php
@ -0,0 +1,26 @@
+<?php
+
+namespace App\Infrastructure\DataFixtures;
+
+use Doctrine\Bundle\FixturesBundle\Fixture;
+use Doctrine\Common\DataFixtures\DependentFixtureInterface;
+use Doctrine\Persistence\ObjectManager;
+
+class AppFixtures extends Fixture implements DependentFixtureInterface
+{
+    public function load(ObjectManager $manager): void
+    {
+        // $product = new Product();
+        // $manager->persist($product);
+
+        $manager->flush();
+    }
+    
+    public function getDependencies(): array
+    {
+        return [
+            UserFixtures::class,
+            EventFixtures::class,
+        ];
+    }
+}
--- a/backend/src/Infrastructure/DataFixtures/EventFixtures.php
+++ b/backend/src/Infrastructure/DataFixtures/EventFixtures.php
@ -0,0 +1,266 @@
+<?php
+
+namespace App\Infrastructure\DataFixtures;
+
+use App\Domain\Model\Event;
+use DateTimeImmutable;
+use Doctrine\Bundle\FixturesBundle\Fixture;
+use Doctrine\Persistence\ObjectManager;
+
+final class EventFixtures extends Fixture
+{
+    public function load(ObjectManager $manager): void
+    {
+        // Health and wellness
+        $this->createDoctorAppointment($manager);
+        $this->createDentistAppointment($manager);
+        $this->createYogaClass($manager);
+        $this->createGymSession($manager);
+        
+        // Social events
+        $this->createDinnerWithFriends($manager);
+        $this->createMovieNight($manager);
+        $this->createBirthdayParty($manager);
+        
+        // Travel and trips
+        $this->createWeekendGetaway($manager);
+        $this->createVacation($manager);
+        
+        // Hobbies and interests
+        $this->createCookingClass($manager);
+        $this->createBookClub($manager);
+        $this->createHiking($manager);
+        
+        // Recurring events
+        $this->createWeeklyGroceryShopping($manager);
+        $this->createMonthlyCleaning($manager);
+        
+        // Special occasions
+        $this->createAnniversary($manager);
+        $this->createConcert($manager);
+        
+        $manager->flush();
+    }
+    
+    private function createDoctorAppointment(ObjectManager $manager): void
+    {
+        $event = new Event();
+        $event->setTitle('Doctor Appointment')
+            ->setDescription('Annual checkup with Dr. Smith')
+            ->setFrom(new DateTimeImmutable('next monday 09:30'))
+            ->setTo(new DateTimeImmutable('next monday 10:30'))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createDentistAppointment(ObjectManager $manager): void
+    {
+        $event = new Event();
+        $event->setTitle('Dentist Appointment')
+            ->setDescription('Teeth cleaning with Dr. Johnson')
+            ->setFrom(new DateTimeImmutable('next friday 14:00'))
+            ->setTo(new DateTimeImmutable('next friday 15:00'))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createYogaClass(ObjectManager $manager): void
+    {
+        $tomorrow = new DateTimeImmutable('tomorrow');
+        
+        $event = new Event();
+        $event->setTitle('Yoga Class')
+            ->setDescription('Vinyasa flow at Peaceful Mind Studio')
+            ->setFrom($tomorrow->setTime(18, 0))
+            ->setTo($tomorrow->setTime(19, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createGymSession(ObjectManager $manager): void
+    {
+        $dayAfterTomorrow = new DateTimeImmutable('today +2 days');
+        
+        $event = new Event();
+        $event->setTitle('Gym Workout')
+            ->setDescription('Strength training at Fitness Center')
+            ->setFrom($dayAfterTomorrow->setTime(7, 0))
+            ->setTo($dayAfterTomorrow->setTime(8, 30))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createDinnerWithFriends(ObjectManager $manager): void
+    {
+        $thisWeekend = new DateTimeImmutable('next saturday');
+        
+        $event = new Event();
+        $event->setTitle('Dinner with Friends')
+            ->setDescription('Dinner at Italiano Restaurant with Alex and Jamie')
+            ->setFrom($thisWeekend->setTime(19, 0))
+            ->setTo($thisWeekend->setTime(22, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createMovieNight(ObjectManager $manager): void
+    {
+        $nextFriday = new DateTimeImmutable('next friday');
+        
+        $event = new Event();
+        $event->setTitle('Movie Night')
+            ->setDescription('Watching new Marvel movie at Cinema City')
+            ->setFrom($nextFriday->setTime(20, 0))
+            ->setTo($nextFriday->setTime(23, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createBirthdayParty(ObjectManager $manager): void
+    {
+        $twoWeeksLater = new DateTimeImmutable('today +14 days');
+        
+        $event = new Event();
+        $event->setTitle('Sarah\'s Birthday Party')
+            ->setDescription('Birthday celebration at Rooftop Bar')
+            ->setFrom($twoWeeksLater->setTime(18, 0))
+            ->setTo($twoWeeksLater->setTime(23, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createWeekendGetaway(ObjectManager $manager): void
+    {
+        $nextWeekend = new DateTimeImmutable('next saturday');
+        $nextWeekendEnd = new DateTimeImmutable('next sunday');
+        
+        $event = new Event();
+        $event->setTitle('Weekend Getaway')
+            ->setDescription('Short trip to the mountains')
+            ->setFrom($nextWeekend)
+            ->setTo($nextWeekendEnd)
+            ->setAllDay(true);
+            
+        $manager->persist($event);
+    }
+    
+    private function createVacation(ObjectManager $manager): void
+    {
+        $vacationStart = new DateTimeImmutable('next month first day');
+        $vacationEnd = new DateTimeImmutable('next month first day +6 days');
+        
+        $event = new Event();
+        $event->setTitle('Summer Vacation')
+            ->setDescription('Beach vacation in Hawaii')
+            ->setFrom($vacationStart)
+            ->setTo($vacationEnd)
+            ->setAllDay(true);
+            
+        $manager->persist($event);
+    }
+    
+    private function createCookingClass(ObjectManager $manager): void
+    {
+        $nextSaturday = new DateTimeImmutable('next saturday');
+        
+        $event = new Event();
+        $event->setTitle('Italian Cooking Class')
+            ->setDescription('Learn to make pasta from scratch at Culinary Center')
+            ->setFrom($nextSaturday->setTime(14, 0))
+            ->setTo($nextSaturday->setTime(17, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createBookClub(ObjectManager $manager): void
+    {
+        $nextThursday = new DateTimeImmutable('next thursday');
+        
+        $event = new Event();
+        $event->setTitle('Book Club Meeting')
+            ->setDescription('Discussing "The Midnight Library" at Local Cafe')
+            ->setFrom($nextThursday->setTime(19, 0))
+            ->setTo($nextThursday->setTime(21, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createHiking(ObjectManager $manager): void
+    {
+        $inTwoWeeks = new DateTimeImmutable('today +14 days');
+        
+        $event = new Event();
+        $event->setTitle('Hiking Trip')
+            ->setDescription('Explore Blue Mountain Trail')
+            ->setFrom($inTwoWeeks->setTime(8, 0))
+            ->setTo($inTwoWeeks->setTime(16, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createWeeklyGroceryShopping(ObjectManager $manager): void
+    {
+        $nextSunday = new DateTimeImmutable('next sunday');
+        
+        $event = new Event();
+        $event->setTitle('Grocery Shopping')
+            ->setDescription('Weekly grocery run at Farmer\'s Market')
+            ->setFrom($nextSunday->setTime(10, 0))
+            ->setTo($nextSunday->setTime(11, 30))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createMonthlyCleaning(ObjectManager $manager): void
+    {
+        $firstOfNextMonth = new DateTimeImmutable('first day of next month');
+        
+        $event = new Event();
+        $event->setTitle('Monthly Deep Cleaning')
+            ->setDescription('House deep cleaning day')
+            ->setFrom($firstOfNextMonth)
+            ->setTo($firstOfNextMonth)
+            ->setAllDay(true);
+            
+        $manager->persist($event);
+    }
+    
+    private function createAnniversary(ObjectManager $manager): void
+    {
+        $twoMonthsFromNow = new DateTimeImmutable('today +2 months');
+        
+        $event = new Event();
+        $event->setTitle('Relationship Anniversary')
+            ->setDescription('Dinner reservation at Sunset Restaurant')
+            ->setFrom($twoMonthsFromNow->setTime(19, 0))
+            ->setTo($twoMonthsFromNow->setTime(22, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+    
+    private function createConcert(ObjectManager $manager): void
+    {
+        $nextMonth = new DateTimeImmutable('next month');
+        
+        $event = new Event();
+        $event->setTitle('Live Concert')
+            ->setDescription('Favorite band performing at Central Arena')
+            ->setFrom($nextMonth->setTime(20, 0))
+            ->setTo($nextMonth->setTime(23, 0))
+            ->setAllDay(false);
+            
+        $manager->persist($event);
+    }
+} 
--- a/backend/src/Infrastructure/DataFixtures/UserFixtures.php
+++ b/backend/src/Infrastructure/DataFixtures/UserFixtures.php
@ -0,0 +1,25 @@
+<?php
+
+namespace App\Infrastructure\DataFixtures;
+
+use App\Domain\Model\User;
+use Doctrine\Bundle\FixturesBundle\Fixture;
+use Doctrine\Persistence\ObjectManager;
+
+final class UserFixtures extends Fixture
+{
+    public const DEFAULT_USER_REFERENCE = 'default-user';
+    
+    public function load(ObjectManager $manager): void
+    {
+        $user = new User();
+        $user->setEmail('user@example.com')
+            ->setFirstName('John')
+            ->setLastName('Doe');
+            
+        $manager->persist($user);
+        $manager->flush();
+        
+        $this->addReference(self::DEFAULT_USER_REFERENCE, $user);
+    }
+} 
--- a/backend/src/Infrastructure/Repository/EventRepository.php
+++ b/backend/src/Infrastructure/Repository/EventRepository.php
@ -0,0 +1,37 @@
+<?php
+
+namespace App\Infrastructure\Repository;
+
+use App\Domain\Model\Event;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @extends ServiceEntityRepository<Event>
+ */
+class EventRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, Event::class);
+    }
+
+    /**
+     * @return array<Event>
+     */
+    public function findByDateRange(\DateTimeInterface $start, \DateTimeInterface $end): array
+    {
+        /** @var array<Event> $result */
+        $result = $this->createQueryBuilder('e')
+            ->andWhere('e.from >= :start AND e.from <= :end')
+            ->orWhere('e.to >= :start AND e.to <= :end')
+            ->orWhere('e.from <= :start AND e.to >= :end')
+            ->setParameter('start', $start)
+            ->setParameter('end', $end)
+            ->orderBy('e.from', 'ASC')
+            ->getQuery()
+            ->getResult();
+            
+        return $result;
+    }
+}
--- a/backend/src/Infrastructure/Repository/UserRepository.php
+++ b/backend/src/Infrastructure/Repository/UserRepository.php
@ -0,0 +1,30 @@
+<?php
+
+namespace App\Infrastructure\Repository;
+
+use App\Domain\Model\User;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @extends ServiceEntityRepository<User>
+ */
+class UserRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, User::class);
+    }
+
+    public function save(User $user): void
+    {
+        $this->getEntityManager()->persist($user);
+        $this->getEntityManager()->flush();
+    }
+
+    public function remove(User $user): void
+    {
+        $this->getEntityManager()->remove($user);
+        $this->getEntityManager()->flush();
+    }
+} 
--- a/backend/symfony.lock
+++ b/backend/symfony.lock
@ -1,4 +1,52 @@
 {
+    "doctrine/annotations": {
+        "version": "2.0",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "1.10",
+            "ref": "64d8583af5ea57b7afa4aba4b159907f3a148b05"
+        }
+    },
+    "doctrine/doctrine-bundle": {
+        "version": "2.14",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "2.10",
+            "ref": "c170ded8fc587d6bd670550c43dafcf093762245"
+        },
+        "files": [
+            "config/packages/doctrine.yaml",
+            "src/Entity/.gitignore",
+            "src/Repository/.gitignore"
+        ]
+    },
+    "doctrine/doctrine-fixtures-bundle": {
+        "version": "4.1",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "3.0",
+            "ref": "1f5514cfa15b947298df4d771e694e578d4c204d"
+        },
+        "files": [
+            "src/DataFixtures/AppFixtures.php"
+        ]
+    },
+    "doctrine/doctrine-migrations-bundle": {
+        "version": "3.4",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "3.1",
+            "ref": "1d01ec03c6ecbd67c3375c5478c9a423ae5d6a33"
+        },
+        "files": [
+            "config/packages/doctrine_migrations.yaml",
+            "migrations/.gitignore"
+        ]
+    },
    "nelmio/api-doc-bundle": {
        "version": "5.0",
        "recipe": {
@ -8,6 +56,18 @@
            "ref": "c8e0c38e1a280ab9e37587a8fa32b251d5bc1c94"
        }
    },
+    "phpstan/phpstan": {
+        "version": "2.1",
+        "recipe": {
+            "repo": "github.com/symfony/recipes-contrib",
+            "branch": "main",
+            "version": "1.0",
+            "ref": "5e490cc197fb6bb1ae22e5abbc531ddc633b6767"
+        },
+        "files": [
+            "phpstan.dist.neon"
+        ]
+    },
    "symfony/console": {
        "version": "6.4",
        "recipe": {
@ -52,6 +112,15 @@
            "src/Kernel.php"
        ]
    },
+    "symfony/maker-bundle": {
+        "version": "1.62",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "1.0",
+            "ref": "fadbfe33303a76e25cb63401050439aa9b1a9c7f"
+        }
+    },
    "symfony/routing": {
        "version": "6.4",
        "recipe": {
@ -77,5 +146,29 @@
            "config/packages/twig.yaml",
            "templates/base.html.twig"
        ]
+    },
+    "symfony/uid": {
+        "version": "6.4",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "6.2",
+            "ref": "d294ad4add3e15d7eb1bae0221588ca89b38e558"
+        },
+        "files": [
+            "config/packages/uid.yaml"
+        ]
+    },
+    "symfony/validator": {
+        "version": "6.4",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "5.3",
+            "ref": "c32cfd98f714894c4f128bb99aa2530c1227603c"
+        },
+        "files": [
+            "config/packages/validator.yaml"
+        ]
    }
 }
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@ -29,7 +29,8 @@ RUN apt-get update && apt-get install -y \
    php8.4-bcmath \
    php8.4-intl \
    php8.4-gd \
-    php8.4-fpm
+    php8.4-fpm \
+    php8.4-pgsql

 # Install Composer
 RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@ -1,5 +1,8 @@
 .App {
-  text-align: center;
+  width: 100%;
+  max-width: 100%;
+  overflow-x: hidden;
+  box-sizing: border-box;
 }

 .App-logo {
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@ -1,14 +1,14 @@
-import React from 'react';
 import './App.css';
 import { TabView } from './components/navigation/TabView';
 import Home from './pages/home/Home';
+import Profile from './pages/profile/Profile';
 import { faCalendar, faUser } from '@fortawesome/free-solid-svg-icons';
 import { faHome } from '@fortawesome/free-solid-svg-icons';

 const tabs = [
  { id: 'home', label: 'Home', component: Home, icon: faHome },
  { id: 'calendar', label: 'Calendar', component: Home, icon: faCalendar },
-  { id: 'profile', label: 'Profile', component: Home, icon: faUser }
+  { id: 'profile', label: 'Profile', component: Profile, icon: faUser }
 ];

 function App() {
--- a/frontend/src/components/navigation/TabView.css
+++ b/frontend/src/components/navigation/TabView.css
@ -3,10 +3,13 @@
  flex-direction: column;
  height: 100vh;
  width: 100%;
+  max-width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background-color: #f8fafc;
+  overflow-x: hidden;
+  box-sizing: border-box;
 }

 .tab-bar {
@ -60,13 +63,16 @@

 .tab-content {
  flex: 1;
-  overflow: auto;
-  padding: 20px;
+  overflow-y: auto;
+  overflow-x: hidden;
  display: flex;
  flex-direction: column;
-  justify-content: center;
-  align-items: center;
+  justify-content: start;
+  align-items: start;
  background-color: #ffffff;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  margin-bottom: -20px;
+  width: 100%;
+  max-width: 100%;
+  box-sizing: border-box;
 } 
--- a/frontend/src/components/ui/Calendar/Calendar.module.css
+++ b/frontend/src/components/ui/Calendar/Calendar.module.css
@ -0,0 +1,200 @@
+.calendar {
+  background-color: #fff;
+  border-radius: 12px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
+  overflow: hidden;
+  width: 100%;
+  max-width: 900px;
+  margin: 0 auto;
+}
+
+.calendarContainer {
+  display: flex;
+  flex-direction: column;
+  
+  @media (min-width: 768px) {
+    flex-direction: row;
+  }
+}
+
+/* Header styles */
+.header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 20px 24px;
+  border-bottom: 1px solid #f0f0f0;
+  background-color: #fff;
+}
+
+.headerTitle {
+  font-size: 20px;
+  font-weight: 600;
+  margin: 0;
+  color: #333;
+}
+
+.navButton {
+  background-color: transparent;
+  border: none;
+  border-radius: 50%;
+  width: 36px;
+  height: 36px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  color: #666;
+  transition: background-color 0.2s, color 0.2s;
+}
+
+.navButton:hover {
+  background-color: #f5f5f5;
+  color: #333;
+}
+
+.navButton:focus {
+  outline: none;
+  box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.3);
+}
+
+/* Calendar grid styles */
+.calendarGrid {
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  padding: 0 1rem 1rem;
+  flex: 2;
+}
+
+.weekDay {
+  padding: 12px 0;
+  text-align: center;
+  font-size: 13px;
+  font-weight: 600;
+  color: #777;
+  border-bottom: 1px solid #f0f0f0;
+}
+
+.day, .emptyDay {
+  aspect-ratio: 1/1;
+  padding: 4px;
+  position: relative;
+  cursor: pointer;
+  transition: background-color 0.2s;
+}
+
+.day:hover {
+  background-color: #f5f5f5;
+}
+
+.dayNumber {
+  position: absolute;
+  top: 4px;
+  left: 6px;
+  font-size: 14px;
+  font-weight: 500;
+  color: #444;
+  height: 24px;
+  width: 24px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 50%;
+}
+
+.today .dayNumber {
+  background-color: #4285f4;
+  color: white;
+}
+
+.selectedDay {
+  background-color: rgba(66, 133, 244, 0.08);
+}
+
+.selectedDay .dayNumber {
+  font-weight: 700;
+}
+
+.eventIndicators {
+  position: absolute;
+  bottom: 8px;
+  left: 0;
+  right: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 2px;
+}
+
+.eventIndicator {
+  width: 80%;
+  height: 4px;
+  border-radius: 2px;
+}
+
+.moreEvents {
+  font-size: 10px;
+  color: #777;
+  margin-top: 2px;
+}
+
+/* Events list styles */
+.eventsList {
+  padding: 16px;
+  border-left: 1px solid #f0f0f0;
+  flex: 1;
+  max-height: 460px;
+  overflow-y: auto;
+  
+  @media (max-width: 767px) {
+    border-left: none;
+    border-top: 1px solid #f0f0f0;
+  }
+}
+
+.eventsListTitle {
+  font-size: 16px;
+  font-weight: 600;
+  margin: 0 0 16px;
+  color: #333;
+}
+
+.eventsListEmpty {
+  padding: 20px;
+  text-align: center;
+  color: #777;
+  font-style: italic;
+}
+
+.eventsContainer {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.event {
+  padding: 12px;
+  border-radius: 8px;
+  background-color: #f8f9fa;
+  border-left: 4px solid #4285f4;
+  cursor: pointer;
+  transition: transform 0.1s, box-shadow 0.2s;
+}
+
+.event:hover {
+  transform: translateY(-2px);
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
+}
+
+.eventTime {
+  font-size: 12px;
+  font-weight: 500;
+  color: #666;
+  margin-bottom: 4px;
+}
+
+.eventTitle {
+  font-size: 14px;
+  font-weight: 500;
+  color: #333;
+} 
--- a/frontend/src/components/ui/Calendar/CalendarDemo.tsx
+++ b/frontend/src/components/ui/Calendar/CalendarDemo.tsx
@ -0,0 +1,49 @@
+import { useState, useEffect } from 'react';
+import { Calendar, CalendarEvent } from './index';
+import { useApi } from '../../../lib/api/useApi';
+import { getEvents } from '../../../lib/api/endpoints';
+
+export const CalendarDemo = () => {
+  const [selectedEvent, setSelectedEvent] = useState<CalendarEvent | null>(null);
+  const [fetchEvents, { data: events, loading, error }] = useApi(getEvents, []);
+
+  useEffect(() => {
+    fetchEvents();
+
+  }, [fetchEvents]);
+
+  if (loading) {
+    return <div>Loading...</div>;
+  }
+
+  if (error) {
+    return <div>Error: {error}</div>;
+  }
+  
+  const calendarEvents: CalendarEvent[] = events ? events.map(event => ({
+    id: event.id,
+    title: event.title,
+    date: new Date(event.start),
+    color: event.allDay ? '#4285F4' : '#34A853'
+  })) : [];
+
+  console.log(calendarEvents);
+  
+  const handleDateClick = (date: Date) => {
+    console.log('Date clicked:', date);
+  };
+  
+  const handleEventClick = (event: CalendarEvent) => {
+    setSelectedEvent(event);
+  };
+  
+  return (
+    <div className="calendarDemo">
+      <Calendar 
+        events={calendarEvents}
+        onDateClick={handleDateClick}
+        onEventClick={handleEventClick}
+      />
+    </div>
+  );
+}; 
--- a/frontend/src/components/ui/Calendar/CalendarEventsList.tsx
+++ b/frontend/src/components/ui/Calendar/CalendarEventsList.tsx
@ -0,0 +1,58 @@
+import { CalendarEvent } from './index';
+import styles from './Calendar.module.css';
+
+export type CalendarEventsListProps = {
+  events: CalendarEvent[];
+  date: Date;
+  onEventClick?: (event: CalendarEvent) => void;
+};
+
+export const CalendarEventsList = ({
+  events,
+  date,
+  onEventClick
+}: CalendarEventsListProps) => {
+  if (events.length === 0) {
+    return (
+      <div className={styles.eventsListEmpty}>
+        <p>No events scheduled for this day</p>
+      </div>
+    );
+  }
+  
+  const handleEventClick = (event: CalendarEvent) => {
+    if (onEventClick) {
+      onEventClick(event);
+    }
+  };
+  
+  const formatTime = (date: Date) => {
+    return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
+  };
+  
+  return (
+    <div className={styles.eventsList}>
+      <h3 className={styles.eventsListTitle}>
+        Events for {date.toLocaleDateString([], { month: 'long', day: 'numeric' })}
+      </h3>
+      
+      <div className={styles.eventsContainer}>
+        {events.map(event => (
+          <div 
+            key={event.id} 
+            className={styles.event}
+            onClick={() => handleEventClick(event)}
+            style={{ borderLeftColor: event.color || '#4285f4' }}
+          >
+            <div className={styles.eventTime}>
+              {formatTime(event.date)}
+            </div>
+            <div className={styles.eventTitle}>
+              {event.title}
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}; 
--- a/frontend/src/components/ui/Calendar/CalendarGrid.tsx
+++ b/frontend/src/components/ui/Calendar/CalendarGrid.tsx
@ -0,0 +1,97 @@
+import { formatDate } from '../../../lib/date';
+import { CalendarEvent } from './index';
+import styles from './Calendar.module.css';
+
+export type CalendarGridProps = {
+  daysInMonth: number[];
+  firstDay: number;
+  currentDate: Date;
+  selectedDate: Date | null;
+  events: CalendarEvent[];
+  onDateClick: (day: number) => void;
+};
+
+export const CalendarGrid = ({
+  daysInMonth,
+  firstDay,
+  currentDate,
+  selectedDate,
+  events,
+  onDateClick
+}: CalendarGridProps) => {
+  const weekDays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
+  const today = new Date();
+  const currentMonth = currentDate.getMonth();
+  const currentYear = currentDate.getFullYear();
+  
+  const isCurrentMonth = 
+    today.getMonth() === currentMonth && 
+    today.getFullYear() === currentYear;
+  
+  const todayDate = today.getDate();
+  
+  const getEventsByDay = (day: number) => {
+    const date = new Date(currentYear, currentMonth, day);
+    const formattedDate = formatDate(date);
+    
+    return events.filter(event => formatDate(event.date) === formattedDate);
+  };
+  
+  const renderDay = (day: number) => {
+    const date = new Date(currentYear, currentMonth, day);
+    const isSelected = selectedDate && formatDate(date) === formatDate(selectedDate);
+    const isToday = isCurrentMonth && day === todayDate;
+    const dayEvents = getEventsByDay(day);
+    
+    return (
+      <div 
+        key={day}
+        className={`
+          ${styles.day}
+          ${isSelected ? styles.selectedDay : ''}
+          ${isToday ? styles.today : ''}
+        `}
+        onClick={() => onDateClick(day)}
+      >
+        <span className={styles.dayNumber}>{day}</span>
+        
+        {dayEvents.length > 0 && (
+          <div className={styles.eventIndicators}>
+            {dayEvents.slice(0, 3).map((event, index) => (
+              <div 
+                key={event.id}
+                className={styles.eventIndicator}
+                style={{ backgroundColor: event.color || '#4285f4' }}
+                title={event.title}
+              />
+            ))}
+            
+            {dayEvents.length > 3 && (
+              <div className={styles.moreEvents}>
+                +{dayEvents.length - 3}
+              </div>
+            )}
+          </div>
+        )}
+      </div>
+    );
+  };
+  
+  const renderEmptyDay = (index: number) => (
+    <div key={`empty-${index}`} className={styles.emptyDay} />
+  );
+  
+  return (
+    <div className={styles.calendarGrid}>
+      {weekDays.map(day => (
+        <div key={day} className={styles.weekDay}>
+          {day}
+        </div>
+      ))}
+      
+      {Array(firstDay).fill(null).map((_, index) => renderEmptyDay(index))}
+      
+      {daysInMonth.map(day => renderDay(day))}
+    </div>
+  );
+}; 
--- a/frontend/src/components/ui/Calendar/CalendarHeader.tsx
+++ b/frontend/src/components/ui/Calendar/CalendarHeader.tsx
@ -0,0 +1,47 @@
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
+import { faChevronLeft, faChevronRight } from '@fortawesome/free-solid-svg-icons';
+import styles from './Calendar.module.css';
+
+export type CalendarHeaderProps = {
+  currentDate: Date;
+  onPrevMonth: () => void;
+  onNextMonth: () => void;
+};
+
+export const CalendarHeader = ({ 
+  currentDate, 
+  onPrevMonth, 
+  onNextMonth 
+}: CalendarHeaderProps) => {
+  const monthNames = [
+    'January', 'February', 'March', 'April', 'May', 'June',
+    'July', 'August', 'September', 'October', 'November', 'December'
+  ];
+  
+  const month = monthNames[currentDate.getMonth()];
+  const year = currentDate.getFullYear();
+  
+  return (
+    <div className={styles.header}>
+      <button 
+        className={styles.navButton} 
+        onClick={onPrevMonth}
+        aria-label="Previous month"
+      >
+        <FontAwesomeIcon icon={faChevronLeft} />
+      </button>
+      
+      <h2 className={styles.headerTitle}>
+        {month} {year}
+      </h2>
+      
+      <button 
+        className={styles.navButton} 
+        onClick={onNextMonth}
+        aria-label="Next month"
+      >
+        <FontAwesomeIcon icon={faChevronRight} />
+      </button>
+    </div>
+  );
+}; 
--- a/frontend/src/components/ui/Calendar/index.tsx
+++ b/frontend/src/components/ui/Calendar/index.tsx
@ -0,0 +1,99 @@
+import { useState, useEffect } from 'react';
+import { CalendarHeader } from './CalendarHeader';
+import { CalendarGrid } from './CalendarGrid';
+import { CalendarEventsList } from './CalendarEventsList';
+import { getDaysInMonth, getFirstDayOfMonth, formatDate } from '../../../lib/date';
+import styles from './Calendar.module.css';
+
+export type CalendarEvent = {
+  id: string;
+  title: string;
+  date: Date;
+  color?: string;
+};
+
+export type CalendarProps = {
+  events?: CalendarEvent[];
+  onDateClick?: (date: Date) => void;
+  onEventClick?: (event: CalendarEvent) => void;
+  initialDate?: Date;
+};
+
+export const Calendar = ({ 
+  events = [], 
+  onDateClick, 
+  onEventClick,
+  initialDate = new Date() 
+}: CalendarProps) => {
+  const [currentDate, setCurrentDate] = useState<Date>(initialDate);
+  const [selectedDate, setSelectedDate] = useState<Date | null>(null);
+  const [daysInMonth, setDaysInMonth] = useState<number[]>([]);
+  const [firstDay, setFirstDay] = useState<number>(0);
+  
+  useEffect(() => {
+    const days = getDaysInMonth(currentDate.getFullYear(), currentDate.getMonth());
+    const firstDayOfMonth = getFirstDayOfMonth(currentDate.getFullYear(), currentDate.getMonth());
+    
+    setDaysInMonth(Array.from({ length: days }, (_, i) => i + 1));
+    setFirstDay(firstDayOfMonth);
+  }, [currentDate]);
+  
+  const handlePrevMonth = () => {
+    setCurrentDate(prevDate => {
+      const newDate = new Date(prevDate);
+      newDate.setMonth(newDate.getMonth() - 1);
+      return newDate;
+    });
+  };
+  
+  const handleNextMonth = () => {
+    setCurrentDate(prevDate => {
+      const newDate = new Date(prevDate);
+      newDate.setMonth(newDate.getMonth() + 1);
+      return newDate;
+    });
+  };
+  
+  const handleDateClick = (day: number) => {
+    const newDate = new Date(currentDate);
+    newDate.setDate(day);
+    setSelectedDate(newDate);
+    
+    if (onDateClick) {
+      onDateClick(newDate);
+    }
+  };
+  
+  const filteredEvents = selectedDate 
+    ? events.filter(event => formatDate(event.date) === formatDate(selectedDate))
+    : [];
+  
+  return (
+    <div className={styles.calendar}>
+      <CalendarHeader 
+        currentDate={currentDate}
+        onPrevMonth={handlePrevMonth}
+        onNextMonth={handleNextMonth}
+      />
+      
+      <div className={styles.calendarContainer}>
+        <CalendarGrid 
+          daysInMonth={daysInMonth}
+          firstDay={firstDay}
+          currentDate={currentDate}
+          selectedDate={selectedDate}
+          events={events}
+          onDateClick={handleDateClick}
+        />
+        
+        {selectedDate && (
+          <CalendarEventsList 
+            events={filteredEvents}
+            date={selectedDate}
+            onEventClick={onEventClick}
+          />
+        )}
+      </div>
+    </div>
+  );
+}; 
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@ -1,3 +1,13 @@
+* {
+  box-sizing: border-box;
+}
+
+html, body {
+  width: 100%;
+  max-width: 100%;
+  overflow-x: hidden;
+}
+
 body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
--- a/frontend/src/index.tsx
+++ b/frontend/src/index.tsx
@ -4,13 +4,16 @@ import './index.css';
 import App from './App';
 import reportWebVitals from './reportWebVitals';
 import './components/ui/FontAwesomeIcons';
+import { UserProvider } from './lib/context';

 const root = ReactDOM.createRoot(
  document.getElementById('root') as HTMLElement
 );
 root.render(
  <React.StrictMode>
-    <App />
+    <UserProvider>
+      <App />
+    </UserProvider>
  </React.StrictMode>
 );

--- a/frontend/src/lib/api/client.ts
+++ b/frontend/src/lib/api/client.ts
@ -0,0 +1,101 @@
+export type ApiResponse<T> = {
+  data: T;
+  success: boolean;
+  error?: string;
+};
+
+export type RequestOptions = {
+  params?: Record<string, string | number | boolean>;
+  headers?: Record<string, string>;
+};
+
+const API_BASE_URL = process.env.REACT_APP_API_URL || 'http://localhost:9010';
+
+export class ApiError extends Error {
+  status: number;
+  
+  constructor(message: string, status: number) {
+    super(message);
+    this.status = status;
+    this.name = 'ApiError';
+  }
+}
+
+export async function get<T>(endpoint: string, options?: RequestOptions): Promise<T> {
+  const url = buildUrl(endpoint, options?.params);
+  const response = await fetch(url, {
+    method: 'GET',
+    headers: {
+      'Content-Type': 'application/json',
+      ...options?.headers
+    }
+  });
+  
+  return handleResponse<T>(response);
+}
+
+export async function post<T>(endpoint: string, data: unknown, options?: RequestOptions): Promise<T> {
+  const url = buildUrl(endpoint, options?.params);
+  const response = await fetch(url, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      ...options?.headers
+    },
+    body: JSON.stringify(data)
+  });
+  
+  return handleResponse<T>(response);
+}
+
+export async function put<T>(endpoint: string, data: unknown, options?: RequestOptions): Promise<T> {
+  const url = buildUrl(endpoint, options?.params);
+  const response = await fetch(url, {
+    method: 'PUT',
+    headers: {
+      'Content-Type': 'application/json',
+      ...options?.headers
+    },
+    body: JSON.stringify(data)
+  });
+  
+  return handleResponse<T>(response);
+}
+
+export async function del<T>(endpoint: string, options?: RequestOptions): Promise<T> {
+  const url = buildUrl(endpoint, options?.params);
+  const response = await fetch(url, {
+    method: 'DELETE',
+    headers: {
+      'Content-Type': 'application/json',
+      ...options?.headers
+    }
+  });
+  
+  return handleResponse<T>(response);
+}
+
+function buildUrl(endpoint: string, params?: Record<string, string | number | boolean>): string {
+  const url = new URL(`${API_BASE_URL}${endpoint}`);
+  
+  if (params) {
+    Object.entries(params).forEach(([key, value]) => {
+      url.searchParams.append(key, String(value));
+    });
+  }
+  
+  return url.toString();
+}
+
+async function handleResponse<T>(response: Response): Promise<T> {
+  if (!response.ok) {
+    const errorText = await response.text();
+    throw new ApiError(errorText || `Request failed with status ${response.status}`, response.status);
+  }
+  
+  try {
+    return await response.json() as T;
+  } catch (error) {
+    throw new ApiError('Failed to parse response', 500);
+  }
+}
--- a/frontend/src/lib/api/endpoints.ts
+++ b/frontend/src/lib/api/endpoints.ts
@ -0,0 +1,65 @@
+import { get, post, put, del } from './client';
+
+// Define your data types here
+export type User = {
+  id: number;
+  name: string;
+  email: string;
+};
+
+export type CreateUserRequest = {
+  name: string;
+  email: string;
+  password: string;
+};
+
+// User endpoints
+export const getUser = () => get<User>('/api/user');
+
+// Event types
+export type Event = {
+  id: string;
+  title: string;
+  description: string;
+  start: string;
+  end: string;
+  allDay: boolean;
+};
+
+export type CreateEventRequest = {
+  title: string;
+  description?: string;
+  start: string;
+  end: string;
+  allDay?: boolean;
+};
+
+// Event endpoints
+export const getEvents = () => get<Event[]>('/api/events');
+export const getEvent = (id: string) => get<Event>(`/api/events/${id}`);
+export const createEvent = (data: CreateEventRequest) => post<Event>('/api/events', data);
+export const updateEvent = (id: string, data: Partial<CreateEventRequest>) => put<Event>(`/api/events/${id}`, data);
+export const deleteEvent = (id: string) => del<void>(`/api/events/${id}`);
+
+// Calendar types
+export type Calendar = {
+  events: Event[];
+};
+
+// Calendar endpoints
+export const getCalendar = (start?: string, end?: string) => {
+  const params = new URLSearchParams();
+  if (start) params.append('start', start);
+  if (end) params.append('end', end);
+  
+  const queryString = params.toString();
+  return get<Calendar>(`/api/calendar${queryString ? `?${queryString}` : ''}`);
+};
+
+// Health check endpoint
+export type PingResponse = {
+  status: string;
+  timestamp: number;
+};
+
+export const ping = () => get<PingResponse>('/api/ping');
--- a/frontend/src/lib/api/index.ts
+++ b/frontend/src/lib/api/index.ts
@ -0,0 +1,3 @@
+export * from './client';
+export * from './endpoints';
+export * from './useApi'; 
--- a/frontend/src/lib/api/useApi.ts
+++ b/frontend/src/lib/api/useApi.ts
@ -0,0 +1,67 @@
+import { useState, useCallback } from 'react';
+import { ApiError } from './client';
+
+export type ApiState<T> = {
+  data: T | null;
+  loading: boolean;
+  error: string | null;
+};
+
+export type ApiHook<T, P extends unknown[]> = [
+  (...args: P) => Promise<void>,
+  ApiState<T>
+];
+
+export function useApi<T, P extends unknown[]>(
+  apiFunction: (...args: P) => Promise<T>,
+  initialData: T | null = null
+): ApiHook<T, P> {
+  const [state, setState] = useState<ApiState<T>>({
+    data: initialData,
+    loading: false,
+    error: null,
+  });
+
+  const execute = useCallback(
+    async (...args: P) => {
+      setState((prev) => ({ ...prev, loading: true, error: null }));
+      
+      try {
+        const data = await apiFunction(...args);
+        setState({ data, loading: false, error: null });
+      } catch (err) {
+        const error = err instanceof ApiError
+          ? err.message
+          : 'An unexpected error occurred';
+        
+        console.error(err);
+          
+        setState((prev) => ({ ...prev, loading: false, error }));
+      }
+    },
+    [apiFunction]
+  );
+
+  return [execute, state];
+}
+
+// Example usage:
+// 
+// function UserList() {
+//   const [fetchUsers, { data: users, loading, error }] = useApi(getUsers, []);
+//
+//   useEffect(() => {
+//     fetchUsers();
+//   }, [fetchUsers]);
+//
+//   if (loading) return <div>Loading...</div>;
+//   if (error) return <div>Error: {error}</div>;
+//
+//   return (
+//     <ul>
+//       {users?.map(user => (
+//         <li key={user.id}>{user.name}</li>
+//       ))}
+//     </ul>
+//   );
+// } 
--- a/frontend/src/lib/calendar/CalendarService.ts
+++ b/frontend/src/lib/calendar/CalendarService.ts
@ -0,0 +1,140 @@
+import { CalendarEvent, RecurrenceRule } from '../models/CalendarEvent';
+
+export class CalendarService {
+  static getEventsForMonth(events: CalendarEvent[], year: number, month: number): CalendarEvent[] {
+    const startOfMonth = new Date(year, month, 1);
+    const endOfMonth = new Date(year, month + 1, 0);
+    
+    return events.filter(event => 
+      (event.start <= endOfMonth && event.end >= startOfMonth) ||
+      this.isRecurringInRange(event, startOfMonth, endOfMonth)
+    );
+  }
+  
+  static getEventsForDay(events: CalendarEvent[], date: Date): CalendarEvent[] {
+    const dayStart = new Date(date.getFullYear(), date.getMonth(), date.getDate());
+    const dayEnd = new Date(date.getFullYear(), date.getMonth(), date.getDate(), 23, 59, 59);
+    
+    return events.filter(event => 
+      (event.start <= dayEnd && event.end >= dayStart) ||
+      this.isRecurringInRange(event, dayStart, dayEnd)
+    );
+  }
+  
+  static getEventsForWeek(events: CalendarEvent[], date: Date): CalendarEvent[] {
+    const dayOfWeek = date.getDay();
+    const weekStart = new Date(date);
+    weekStart.setDate(date.getDate() - dayOfWeek);
+    weekStart.setHours(0, 0, 0, 0);
+    
+    const weekEnd = new Date(weekStart);
+    weekEnd.setDate(weekStart.getDate() + 6);
+    weekEnd.setHours(23, 59, 59, 999);
+    
+    return events.filter(event => 
+      (event.start <= weekEnd && event.end >= weekStart) ||
+      this.isRecurringInRange(event, weekStart, weekEnd)
+    );
+  }
+  
+  static isRecurringInRange(event: CalendarEvent, rangeStart: Date, rangeEnd: Date): boolean {
+    if (!event.recurrence) {
+      return false;
+    }
+    
+    if (event.recurrence.until && event.recurrence.until < rangeStart) {
+      return false;
+    }
+    
+    // Simplified recurrence check - a complete implementation would be more complex
+    switch (event.recurrence.frequency) {
+      case 'daily':
+        return this.checkDailyRecurrence(event, rangeStart, rangeEnd);
+      case 'weekly':
+        return this.checkWeeklyRecurrence(event, rangeStart, rangeEnd);
+      case 'monthly':
+        return this.checkMonthlyRecurrence(event, rangeStart, rangeEnd);
+      case 'yearly':
+        return this.checkYearlyRecurrence(event, rangeStart, rangeEnd);
+      default:
+        return false;
+    }
+  }
+  
+  private static checkDailyRecurrence(event: CalendarEvent, rangeStart: Date, rangeEnd: Date): boolean {
+    const interval = event.recurrence?.interval || 1;
+    const eventDuration = event.end.getTime() - event.start.getTime();
+    
+    // Check if any occurrence falls within range
+    let currentDate = new Date(event.start);
+    const rangeEndTime = rangeEnd.getTime();
+    
+    while (currentDate.getTime() <= rangeEndTime) {
+      if (currentDate.getTime() + eventDuration >= rangeStart.getTime()) {
+        return true;
+      }
+      
+      currentDate.setDate(currentDate.getDate() + interval);
+    }
+    
+    return false;
+  }
+  
+  private static checkWeeklyRecurrence(event: CalendarEvent, rangeStart: Date, rangeEnd: Date): boolean {
+    const interval = event.recurrence?.interval || 1;
+    const eventDuration = event.end.getTime() - event.start.getTime();
+    
+    // Check if any occurrence falls within range
+    let currentDate = new Date(event.start);
+    const rangeEndTime = rangeEnd.getTime();
+    
+    while (currentDate.getTime() <= rangeEndTime) {
+      if (currentDate.getTime() + eventDuration >= rangeStart.getTime()) {
+        return true;
+      }
+      
+      currentDate.setDate(currentDate.getDate() + (interval * 7));
+    }
+    
+    return false;
+  }
+  
+  private static checkMonthlyRecurrence(event: CalendarEvent, rangeStart: Date, rangeEnd: Date): boolean {
+    const interval = event.recurrence?.interval || 1;
+    const eventDay = event.start.getDate();
+    
+    // Simple check - a complete implementation would handle more complex patterns
+    for (let year = rangeStart.getFullYear(); year <= rangeEnd.getFullYear(); year++) {
+      const startMonth = year === rangeStart.getFullYear() ? rangeStart.getMonth() : 0;
+      const endMonth = year === rangeEnd.getFullYear() ? rangeEnd.getMonth() : 11;
+      
+      for (let month = startMonth; month <= endMonth; month++) {
+        if ((month - event.start.getMonth()) % interval === 0) {
+          const checkDate = new Date(year, month, eventDay);
+          if (checkDate >= rangeStart && checkDate <= rangeEnd) {
+            return true;
+          }
+        }
+      }
+    }
+    
+    return false;
+  }
+  
+  private static checkYearlyRecurrence(event: CalendarEvent, rangeStart: Date, rangeEnd: Date): boolean {
+    const interval = event.recurrence?.interval || 1;
+    const eventMonth = event.start.getMonth();
+    const eventDay = event.start.getDate();
+    
+    for (let year = rangeStart.getFullYear(); year <= rangeEnd.getFullYear(); year++) {
+      if ((year - event.start.getFullYear()) % interval === 0) {
+        const checkDate = new Date(year, eventMonth, eventDay);
+        if (checkDate >= rangeStart && checkDate <= rangeEnd) {
+          return true;
+        }
+      }
+    }
+    
+    return false;
+  }
+} 
--- a/frontend/src/lib/context/UserContext.tsx
+++ b/frontend/src/lib/context/UserContext.tsx
@ -0,0 +1,57 @@
+import { createContext, useContext, useState, useEffect, ReactNode } from 'react';
+import { User, getUser } from '../api/endpoints';
+
+type UserContextType = {
+  user: User | null;
+  loading: boolean;
+  error: Error | null;
+  refetch: () => Promise<void>;
+};
+
+const UserContext = createContext<UserContextType | undefined>(undefined);
+
+export const UserProvider = ({ children }: { children: ReactNode }) => {
+  const [user, setUser] = useState<User | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<Error | null>(null);
+
+  const fetchUser = async () => {
+    try {
+      setLoading(true);
+      setError(null);
+      const userData = await getUser();
+      setUser(userData);
+    } catch (err) {
+      setError(err instanceof Error ? err : new Error('Failed to fetch user'));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    fetchUser();
+  }, []);
+
+  return (
+    <UserContext.Provider
+      value={{
+        user,
+        loading,
+        error,
+        refetch: fetchUser
+      }}
+    >
+      {children}
+    </UserContext.Provider>
+  );
+};
+
+export const useUser = (): UserContextType => {
+  const context = useContext(UserContext);
+  
+  if (context === undefined) {
+    throw new Error('useUser must be used within a UserProvider');
+  }
+  
+  return context;
+}; 
--- a/frontend/src/lib/context/index.ts
+++ b/frontend/src/lib/context/index.ts
@ -0,0 +1 @@
+export * from './UserContext'; 
--- a/frontend/src/lib/date.ts
+++ b/frontend/src/lib/date.ts
@ -0,0 +1,69 @@
+/**
+ * Get the number of days in a month
+ */
+export const getDaysInMonth = (year: number, month: number): number => {
+  return new Date(year, month + 1, 0).getDate();
+};
+
+/**
+ * Get the day of the week for the first day of a month (0 = Sunday, 6 = Saturday)
+ */
+export const getFirstDayOfMonth = (year: number, month: number): number => {
+  return new Date(year, month, 1).getDay();
+};
+
+/**
+ * Format a date as YYYY-MM-DD for comparison
+ */
+export const formatDate = (date: Date): string => {
+  const year = date.getFullYear();
+  const month = String(date.getMonth() + 1).padStart(2, '0');
+  const day = String(date.getDate()).padStart(2, '0');
+  
+  return `${year}-${month}-${day}`;
+};
+
+/**
+ * Get an array of dates for the current week containing the given date
+ */
+export const getDatesForWeek = (date: Date): Date[] => {
+  const day = date.getDay();
+  const diff = date.getDate() - day;
+  
+  return Array(7)
+    .fill(null)
+    .map((_, index) => {
+      const newDate = new Date(date);
+      newDate.setDate(diff + index);
+      return newDate;
+    });
+};
+
+/**
+ * Get the list of dates for a given month
+ */
+export const getDatesForMonth = (year: number, month: number): Date[] => {
+  const daysInMonth = getDaysInMonth(year, month);
+  
+  return Array(daysInMonth)
+    .fill(null)
+    .map((_, index) => new Date(year, month, index + 1));
+};
+
+/**
+ * Check if two dates are the same day
+ */
+export const isSameDay = (date1: Date, date2: Date): boolean => {
+  return (
+    date1.getFullYear() === date2.getFullYear() &&
+    date1.getMonth() === date2.getMonth() &&
+    date1.getDate() === date2.getDate()
+  );
+};
+
+/**
+ * Check if a date is today
+ */
+export const isToday = (date: Date): boolean => {
+  return isSameDay(date, new Date());
+}; 
--- a/frontend/src/lib/index.ts
+++ b/frontend/src/lib/index.ts
@ -0,0 +1,11 @@
+// Models
+export * from './models/CalendarEvent';
+
+// Calendar utilities
+export * from './calendar/CalendarService';
+
+// Date utilities
+export * from './utils/DateUtils';
+
+// API client
+export * as api from './api'; 
--- a/frontend/src/lib/models/CalendarEvent.ts
+++ b/frontend/src/lib/models/CalendarEvent.ts
@ -0,0 +1,37 @@
+export interface CalendarEvent {
+  id: string;
+  title: string;
+  description?: string;
+  start: Date;
+  end: Date;
+  allDay?: boolean;
+  color?: string;
+  location?: string;
+  organizer?: string;
+  attendees?: Attendee[];
+  recurrence?: RecurrenceRule;
+}
+
+export interface Attendee {
+  id: string;
+  name: string;
+  email: string;
+  status: 'accepted' | 'declined' | 'tentative' | 'pending';
+}
+
+export interface RecurrenceRule {
+  frequency: 'daily' | 'weekly' | 'monthly' | 'yearly';
+  interval?: number;
+  count?: number;
+  until?: Date;
+  byDay?: string[];
+  byMonth?: number[];
+  byMonthDay?: number[];
+  exceptions?: Date[];
+}
+
+export enum EventStatus {
+  CONFIRMED = 'confirmed',
+  TENTATIVE = 'tentative',
+  CANCELLED = 'cancelled'
+} 
--- a/frontend/src/lib/utils/DateUtils.ts
+++ b/frontend/src/lib/utils/DateUtils.ts
@ -0,0 +1,89 @@
+export class DateUtils {
+  static getWeekNumber(date: Date): number {
+    const firstDayOfYear = new Date(date.getFullYear(), 0, 1);
+    const pastDaysOfYear = (date.getTime() - firstDayOfYear.getTime()) / 86400000;
+    return Math.ceil((pastDaysOfYear + firstDayOfYear.getDay() + 1) / 7);
+  }
+
+  static getMonthName(month: number): string {
+    const months = [
+      'January', 'February', 'March', 'April', 'May', 'June',
+      'July', 'August', 'September', 'October', 'November', 'December'
+    ];
+    return months[month];
+  }
+
+  static getShortMonthName(month: number): string {
+    const months = [
+      'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
+      'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'
+    ];
+    return months[month];
+  }
+
+  static getDayName(day: number): string {
+    const days = [
+      'Sunday', 'Monday', 'Tuesday', 'Wednesday', 
+      'Thursday', 'Friday', 'Saturday'
+    ];
+    return days[day];
+  }
+
+  static getShortDayName(day: number): string {
+    const days = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
+    return days[day];
+  }
+
+  static areDatesEqual(date1: Date, date2: Date): boolean {
+    return date1.getFullYear() === date2.getFullYear() &&
+           date1.getMonth() === date2.getMonth() &&
+           date1.getDate() === date2.getDate();
+  }
+
+  static areDateTimesEqual(date1: Date, date2: Date): boolean {
+    return date1.getTime() === date2.getTime();
+  }
+
+  static formatDate(date: Date, format: string = 'YYYY-MM-DD'): string {
+    const year = date.getFullYear().toString();
+    const month = (date.getMonth() + 1).toString().padStart(2, '0');
+    const day = date.getDate().toString().padStart(2, '0');
+    const hours = date.getHours().toString().padStart(2, '0');
+    const minutes = date.getMinutes().toString().padStart(2, '0');
+    const seconds = date.getSeconds().toString().padStart(2, '0');
+
+    return format
+      .replace('YYYY', year)
+      .replace('MM', month)
+      .replace('DD', day)
+      .replace('HH', hours)
+      .replace('mm', minutes)
+      .replace('ss', seconds);
+  }
+
+  static getDaysInMonth(year: number, month: number): number {
+    return new Date(year, month + 1, 0).getDate();
+  }
+
+  static getFirstDayOfMonth(year: number, month: number): number {
+    return new Date(year, month, 1).getDay();
+  }
+
+  static addDays(date: Date, days: number): Date {
+    const result = new Date(date);
+    result.setDate(result.getDate() + days);
+    return result;
+  }
+
+  static addMonths(date: Date, months: number): Date {
+    const result = new Date(date);
+    result.setMonth(result.getMonth() + months);
+    return result;
+  }
+
+  static addYears(date: Date, years: number): Date {
+    const result = new Date(date);
+    result.setFullYear(result.getFullYear() + years);
+    return result;
+  }
+} 
--- a/frontend/src/pages/home/Home.css
+++ b/frontend/src/pages/home/Home.css
@ -0,0 +1,162 @@
+.home-container {
+  display: flex;
+  flex-direction: column;
+  padding: 1.25rem;
+  background-color: #ffffff;
+  height: 100%;
+  overflow-y: auto;
+  overflow-x: hidden;
+  max-width: 1200px;
+  margin: 0 auto;
+  width: 100%;
+  box-sizing: border-box;
+}
+
+.greeting {
+  font-size: 2rem;
+  font-weight: 700;
+  margin-bottom: 1.875rem;
+  color: #000000;
+}
+
+.events-section {
+  margin-bottom: 2.5rem;
+}
+
+.section-title {
+  font-size: 1.5rem;
+  font-weight: 600;
+  margin-bottom: 1rem;
+  color: #000000;
+}
+
+.events-list {
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+}
+
+.tomorrow-events {
+  display: flex;
+  flex-direction: row;
+  gap: 1rem;
+  padding-bottom: 0.5rem;
+  width: 100%;
+  flex-wrap: wrap;
+}
+
+.tomorrow-events .event-item {
+  min-width: 200px;
+  width: 250px;
+  flex-shrink: 0;
+  max-width: 100%;
+}
+
+.week-events {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
+  gap: 1rem;
+  width: 100%;
+}
+
+.event-item {
+  background-color: #ec6a5e;
+  border-radius: 1rem;
+  padding: 1.125rem 1.25rem;
+  color: #ffffff;
+  cursor: pointer;
+  transition: transform 0.2s, box-shadow 0.2s;
+  box-shadow: 0 2px 8px rgba(236, 106, 94, 0.3);
+  display: flex;
+  flex-direction: column;
+  min-height: 80px;
+}
+
+.event-item:hover {
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(236, 106, 94, 0.4);
+}
+
+.event-title {
+  font-size: 1.125rem;
+  font-weight: 600;
+  margin-bottom: 0.5rem;
+  word-break: break-word;
+}
+
+.event-time {
+  font-size: 0.875rem;
+  opacity: 0.9;
+}
+
+.no-events {
+  color: #888;
+  font-style: italic;
+  padding: 1rem 0;
+}
+
+.loading, .error {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  height: 100%;
+  font-size: 1.125rem;
+  color: #555;
+}
+
+.error {
+  color: #ec6a5e;
+}
+
+/* Responsive adjustments */
+@media (max-width: 768px) {
+  .greeting {
+    font-size: 1.75rem;
+    margin-bottom: 1.5rem;
+  }
+  
+  .section-title {
+    font-size: 1.25rem;
+  }
+  
+  .events-section {
+    margin-bottom: 2rem;
+    width: 100%;
+    max-width: 100%;
+  }
+  
+  .tomorrow-events {
+    flex-direction: column;
+  }
+  
+  .tomorrow-events .event-item {
+    width: 100%;
+    min-width: auto;
+  }
+}
+
+@media (max-width: 480px) {
+  .home-container {
+    padding: 1rem;
+  }
+  
+  .greeting {
+    font-size: 1.5rem;
+    margin-bottom: 1.25rem;
+  }
+  
+  .tomorrow-events .event-item {
+    width: 100%;
+  }
+  
+  .week-events {
+    grid-template-columns: 1fr;
+  }
+}
+
+/* Ensure scrolling works properly within the TabView */
+@media (max-height: 700px) {
+  .home-container {
+    padding-bottom: 6.25rem;
+  }
+} 
--- a/frontend/src/pages/home/Home.tsx
+++ b/frontend/src/pages/home/Home.tsx
@ -1,53 +1,126 @@
-import React from 'react';
-import { FontAwesomeIcon } from '../../components/ui/FontAwesomeIcons';
+import React, { useEffect, useState } from 'react';
+import { getEvents, Event } from '../../lib/api/endpoints';
+import './Home.css';

 const Home: React.FC = () => {
+  const [todayEvents, setTodayEvents] = useState<Event[]>([]);
+  const [tomorrowEvents, setTomorrowEvents] = useState<Event[]>([]);
+  const [weekEvents, setWeekEvents] = useState<Event[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [userName, setUserName] = useState('John');
+
+  useEffect(() => {
+    const fetchEvents = async () => {
+      try {
+        setLoading(true);
+        const response = await getEvents();
+        
+        // Get today, tomorrow, and this week's date ranges
+        const today = new Date();
+        today.setHours(0, 0, 0, 0);
+        
+        const tomorrow = new Date(today);
+        tomorrow.setDate(tomorrow.getDate() + 1);
+        
+        const weekStart = new Date(today);
+        const weekEnd = new Date(today);
+        weekEnd.setDate(weekEnd.getDate() + 7);
+        
+        // Filter events for each time period
+        const todayEvts = response.filter(event => {
+          const eventDate = new Date(event.start);
+          eventDate.setHours(0, 0, 0, 0);
+          return eventDate.getTime() === today.getTime();
+        });
+        
+        const tomorrowEvts = response.filter(event => {
+          const eventDate = new Date(event.start);
+          eventDate.setHours(0, 0, 0, 0);
+          return eventDate.getTime() === tomorrow.getTime();
+        });
+        
+        const weekEvts = response.filter(event => {
+          const eventDate = new Date(event.start);
+          eventDate.setHours(0, 0, 0, 0);
+          return eventDate > today && eventDate <= weekEnd && 
+                 eventDate.getTime() !== today.getTime() && 
+                 eventDate.getTime() !== tomorrow.getTime();
+        });
+        
+        setTodayEvents(todayEvts);
+        setTomorrowEvents(tomorrowEvts);
+        setWeekEvents(weekEvts);
+        setLoading(false);
+      } catch (err) {
+        setError('Failed to load events');
+        setLoading(false);
+      }
+    };
+    
+    fetchEvents();
+  }, []);
+
+  const EventItem = ({ event }: { event: Event }) => (
+    <div className="event-item">
+      <div className="event-title">{event.title}</div>
+      <div className="event-time">
+        {new Date(event.start).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
+        {!event.allDay && event.end && ` - ${new Date(event.end).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}`}
+        {event.allDay && ' (All day)'}
+      </div>
+    </div>
+  );
+
+  if (loading) {
+    return <div className="loading">Loading events...</div>;
+  }
+
+  if (error) {
+    return <div className="error">{error}</div>;
+  }
+
  return (
    <div className="home-container">
-      <header className="home-header">
-        <h1>Welcome to Our Application</h1>
-        <p>Your centralized dashboard for all features</p>
-      </header>
+      <h1 className="greeting">Hallo {userName}!</h1>
      
-      <section className="features-section">
-        <div className="feature-card">
-          <div className="feature-icon">
-            <FontAwesomeIcon icon={['fas', 'plus']} />
-          </div>
-          <h2>Create New</h2>
-          <p>Start a new project or task</p>
-        </div>
-        
-        <div className="feature-card">
-          <div className="feature-icon">
-            <FontAwesomeIcon icon={['far', 'calendar']} />
-          </div>
-          <h2>Schedule</h2>
-          <p>Manage your upcoming events</p>
-        </div>
-        
-        <div className="feature-card">
-          <div className="feature-icon">
-            <FontAwesomeIcon icon={['fas', 'edit']} />
-          </div>
-          <h2>Edit</h2>
-          <p>Modify your existing content</p>
+      <section className="events-section">
+        <h2 className="section-title">Heute</h2>
+        <div className="events-list">
+          {todayEvents.length > 0 ? (
+            todayEvents.map(event => (
+              <EventItem key={event.id} event={event} />
+            ))
+          ) : (
+            <div className="no-events">Keine Termine für heute</div>
+          )}
        </div>
      </section>
      
-      <section className="quick-links">
-        <h2>Quick Links</h2>
-        <ul>
-          <li>
-            <a href="#dashboard">Dashboard</a>
-          </li>
-          <li>
-            <a href="#profile">Profile Settings</a>
-          </li>
-          <li>
-            <a href="#help">Help & Support</a>
-          </li>
-        </ul>
+      <section className="events-section">
+        <h2 className="section-title">Morgen</h2>
+        <div className="events-list tomorrow-events">
+          {tomorrowEvents.length > 0 ? (
+            tomorrowEvents.map(event => (
+              <EventItem key={event.id} event={event} />
+            ))
+          ) : (
+            <div className="no-events">Keine Termine für morgen</div>
+          )}
+        </div>
+      </section>
+      
+      <section className="events-section">
+        <h2 className="section-title">Diese Woche</h2>
+        <div className="events-list week-events">
+          {weekEvents.length > 0 ? (
+            weekEvents.map(event => (
+              <EventItem key={event.id} event={event} />
+            ))
+          ) : (
+            <div className="no-events">Keine Termine für diese Woche</div>
+          )}
+        </div>
      </section>
    </div>
  );
--- a/frontend/src/pages/profile/Profile.tsx
+++ b/frontend/src/pages/profile/Profile.tsx
@ -0,0 +1,41 @@
+import { useUser } from '../../lib/context';
+
+const Profile = () => {
+  const { user, loading, error, refetch } = useUser();
+
+  if (loading) {
+    return <div>Loading user data...</div>;
+  }
+
+  if (error) {
+    return (
+      <div>
+        <p>Error loading user data: {error.message}</p>
+        <button onClick={refetch}>Try Again</button>
+      </div>
+    );
+  }
+
+  if (!user) {
+    return (
+      <div>
+        <p>No user data available</p>
+        <button onClick={refetch}>Refresh</button>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      <h1>Profile</h1>
+      <div>
+        <strong>Name:</strong> {user.name}
+      </div>
+      <div>
+        <strong>Email:</strong> {user.email}
+      </div>
+    </div>
+  );
+};
+
+export default Profile;