tags

bin/createApi.php

@@ -14,20 +14,25 @@ $apiNamespace   = $argv[2];
 $apiName        = $argv[3];
 $cqrsType       = strtolower($argv[4]) === 'true' ? 'Command' : 'Query';
 $cqrsNamespace  = $argv[5];
+$originalCqrsNamespace = $cqrsNamespace;
+
+$apiDirectoryPath = $projectSourceDirectory . 'ApiDomain/' . $apiType . '/' . $apiNamespace . '/';
+$cqrsDirectoryPath = $projectSourceDirectory . 'HandlingDomain/' . $cqrsNamespace . '/';
 
 # API Handler
 $apiHandlerName = $apiName . 'Handler';
 $apiHandlerNamespace = $projectNamespace . '\\API\\' . $apiType . '\\' . $apiNamespace . '\\Handler';
-$apiHandlerFilePath = $projectSourceDirectory . 'ApiDomain/' . $apiType . '/' . $apiNamespace . '/src/Handler/' . $apiHandlerName . '.php';
+$apiHandlerUsingNamespace = $apiHandlerNamespace . '\\' . $apiHandlerName;
+$apiHandlerFilePath = $apiDirectoryPath . 'src/Handler/' . $apiHandlerName . '.php';
 
 # Response Formatter
 $apiResponseFormatterName = $apiName . 'ResponseFormatter';
 $apiResponseFormatterNamespace = $projectNamespace . '\\API\\' . $apiType . '\\' . $apiNamespace . '\\ResponseFormatter';
 $apiResponseFormatterUsingNamespace = $apiResponseFormatterNamespace . '\\' . $apiResponseFormatterName;
-$apiResponseFormatterFilePath = $projectSourceDirectory . 'ApiDomain/' . $apiType . '/' . $apiNamespace . '/src/ResponseFormatter/' . $apiResponseFormatterName . '.php';
+$apiResponseFormatterFilePath = $apiDirectoryPath . 'src/ResponseFormatter/' . $apiResponseFormatterName . '.php';
 
 # CQRS
-$cqrsFilePath = $projectSourceDirectory . 'HandlingDomain/' . $cqrsNamespace . '/src/Handler/' . $cqrsType . '/' . $apiName . '/';
+$cqrsFilePath = $cqrsDirectoryPath . 'src/Handler/' . $cqrsType . '/' . $apiName . '/';
 $cqrsName = $apiName . $cqrsType;
 $cqrsVariableName = lcfirst($cqrsName);
 $cqrsNamespace = $projectNamespace . '\\Handling\\' . $cqrsNamespace . '\\Handler\\' . $cqrsType . '\\' . $apiName;
@@ -70,6 +75,113 @@ function writeToFile($path, $content) {
     file_put_contents($path, $content);
 }
 
+if (!file_exists($apiDirectoryPath)) {
+
+    $routesFileContent = "<?php
+
+declare(strict_types=1);
+
+use {$apiHandlerUsingNamespace};
+
+return [
+    [
+        'name' => 'TODO.TODO',
+        'path' => '/api/TODO/TODO[/]',
+        'allowed_methods' => ['POST'],
+        'middleware' => [
+            {$apiHandlerName}::class,
+        ],
+    ],
+];
+";
+    $routesFilePath = $apiDirectoryPath . 'config/routes.php';
+    writeToFile($routesFilePath, $routesFileContent);
+
+    $serviceManagerFileContent = "<?php
+
+declare(strict_types=1);
+
+use {$apiHandlerUsingNamespace};
+use {$apiResponseFormatterUsingNamespace};
+use Reinfi\\DependencyInjection\\Factory\\AutoWiringFactory;
+
+return [
+    'factories' => [
+        // Handler
+        {$apiHandlerName}::class => AutoWiringFactory::class,
+
+        // Response Formatter
+        {$apiResponseFormatterName}::class => AutoWiringFactory::class,
+    ],
+];
+";
+    $serviceManagerFilePath = $apiDirectoryPath . 'config/service_manager.php';
+    writeToFile($serviceManagerFilePath, $serviceManagerFileContent);
+
+    $configProviderFileContent = "<?php
+
+declare(strict_types=1);
+
+namespace MyTube\\API\\{$apiType}\\{$apiNamespace};
+
+class ConfigProvider
+{
+    public function __invoke(): array
+    {
+        return [
+            'dependencies' => require  __DIR__ . './../config/service_manager.php',
+            'routes' => require __DIR__ . '/./../config/routes.php',
+        ];
+    }
+}
+";
+    $configProviderFilePath = $apiDirectoryPath . 'src/ConfigProvider.php';
+    writeToFile($configProviderFilePath, $configProviderFileContent);
+}
+
+if (!file_exists($cqrsDirectoryPath)) {
+    $serviceManagerFileContent = "<?php
+
+declare(strict_types=1);
+
+use {$cqrsHandlerUsingNamespace};
+use {$cqrsBuilderUsingNamespace};
+use Reinfi\\DependencyInjection\\Factory\\AutoWiringFactory;
+use Reinfi\\DependencyInjection\\Factory\\InjectionFactory;
+
+return [
+    'factories' => [
+        /// CQRS
+        // {$apiName}
+        {$cqrsBuilderName}::class => AutoWiringFactory::class,
+        {$cqrsHandlerName}::class => AutoWiringFactory::class,
+    ],
+];
+";
+    $serviceManagerFilePath = $cqrsDirectoryPath . 'config/service_manager.php';
+    writeToFile($serviceManagerFilePath, $serviceManagerFileContent);
+
+    $configProviderFileContent = "<?php
+
+declare(strict_types=1);
+
+namespace MyTube\\Handling\\{$originalCqrsNamespace};
+
+class ConfigProvider
+{
+    public function __invoke(): array
+    {
+        return [
+            'dependencies' => require  __DIR__ . './../config/service_manager.php',
+        ];
+    }
+}
+";
+    $configProviderFilePath = $cqrsDirectoryPath . 'src/ConfigProvider.php';
+    writeToFile($configProviderFilePath, $configProviderFileContent);
+
+}
+
 $apiHandlerFileContent = "<?php
 
 declare(strict_types=1);
@@ -79,10 +191,11 @@ namespace {$apiHandlerNamespace};
 use {$cqrsHandlerUsingNamespace};
 use {$cqrsBuilderUsingNamespace};
 use {$apiResponseFormatterUsingNamespace};
+use {$projectNamespace}\\Infrastructure\\Request\\Middleware\\AnalyzeBodyMiddleware;
+use {$projectNamespace}\\Infrastructure\\Response\\SuccessResponse;
 use Psr\\Http\\Message\\ResponseInterface;
 use Psr\\Http\\Message\\ServerRequestInterface;
 use Psr\\Http\\Server\\RequestHandlerInterface;
-use {$projectNamespace}\\Infrastructure\\Response\\SuccessResponse;
 
 class {$apiHandlerName} implements RequestHandlerInterface
 {
@@ -95,10 +208,7 @@ class {$apiHandlerName} implements RequestHandlerInterface
     
     public function handle(ServerRequestInterface \$request): ResponseInterface
     {
-        \$data = json_decode(
-            \$request->getBody()->getContents(),
-            true
-        );
+        \$data = \$request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         \${$cqrsVariableName} = \$this->{$cqrsBuilderVariableName}->build(
             \$data
@@ -138,7 +248,7 @@ namespace {$cqrsNamespace};
 class {$cqrsName}
 {
     public function __construct(
-        #TODO    
+        #TODO
     ) {    
     }
 }
@@ -154,7 +264,7 @@ namespace {$cqrsNamespace};
 class {$cqrsResultName}
 {
     public function __construct(
-        #TODO    
+        #TODO
     ) {    
     }
 }

bin/createPipeline.php

@@ -16,7 +16,8 @@ $stepNames          = array_slice($argv, 3);
 # Pipeline
 $pipelineClassName = $pipelineName . 'Pipeline';
 $pipelineVariableName = lcfirst($pipelineClassName);
-$pipelineFilePath = $projectSourceDirectory . 'HandlingDomain/' . $pipelineNamespace . '/src/Pipeline/' . $pipelineName . '/' . $pipelineClassName . '.php';
+$pipelineDirectoryPath = $projectSourceDirectory . 'HandlingDomain/' . $pipelineNamespace . '/';
+$pipelineFilePath = $pipelineDirectoryPath . 'src/Pipeline/' . $pipelineName . '/' . $pipelineClassName . '.php';
 $pipelineFullNamespace = $projectNamespace . '\\Handling\\' . $pipelineNamespace . '\\Pipeline\\' . $pipelineName;
 $pipelineUsingNamespace = $pipelineFullNamespace . '\\' . $pipelineClassName;
 
@@ -57,8 +58,11 @@ function writeToFile($path, $content) {
     file_put_contents($path, $content);
 }
 
+$createNamespaceFiles = !file_exists($pipelineDirectoryPath);
+
 $stepsUsingNamespaces = [];
 $stepsDeclarations = [];
+$stepsAutoWirings = [];
 $stepsReferences = [];
 
 foreach ($steps as $step) {
@@ -69,6 +73,7 @@ foreach ($steps as $step) {
 
     $stepsUsingNamespaces[] = $stepUsingNamespace . ';';
     $stepsDeclarations[] = 'private readonly ' . $stepClassName . ' $' . $stepVariableName . ',';
+    $stepsAutoWirings[] = $stepClassName . '::class => AutoWiringFactory::class,';
     $stepsReferences[] = '$this->' . $stepVariableName . ',';
 
     $stepFileContent = "<?php
@@ -89,10 +94,7 @@ class {$stepClassName} implements TaskInterface
     ) {
     }
     
-    public function __invoke(
-        \$payload,
-        PipelineInterface \$pipeline
-    ): void
+    public function __invoke(\$payload, PipelineInterface \$pipeline): void
     {
         /** @var {$payloadClassName} \${$payloadVariableName} */
         \${$payloadVariableName} = \$payload;
@@ -106,6 +108,7 @@ class {$stepClassName} implements TaskInterface
 
 $stepsUsingNamespace = implode(PHP_EOL, $stepsUsingNamespaces);
 $stepsDeclaration = implode(PHP_EOL . '        ', $stepsDeclarations);
+$stepsAutoWiring = implode(PHP_EOL . '        ', $stepsAutoWirings);
 $stepsReference = implode(PHP_EOL . '            ', $stepsReferences);
 
 
@@ -140,10 +143,52 @@ namespace {$payloadFullNamespace};
 
 class {$payloadClassName}
 {
-    public function __construct(
-        #TODO
-    ) {    
-    }
+    #TODO
 }
 ";
 writeToFile($payloadFilePath, $payloadFileContent);
+
+
+
+if ($createNamespaceFiles) {
+    $serviceManagerFileContent = "<?php
+
+declare(strict_types=1);
+
+use {$pipelineUsingNamespace};
+{$stepsUsingNamespace}
+use Reinfi\\DependencyInjection\\Factory\\AutoWiringFactory;
+use Reinfi\\DependencyInjection\\Factory\\InjectionFactory;
+
+return [
+    'factories' => [
+        /// Pipeline
+        // {$pipelineName}
+        {$pipelineClassName}::class => AutoWiringFactory::class,
+        {$stepsAutoWiring}
+    ],
+];
+";
+    $serviceManagerFilePath = $pipelineDirectoryPath . 'config/service_manager.php';
+    writeToFile($serviceManagerFilePath, $serviceManagerFileContent);
+
+    $configProviderFileContent = "<?php
+
+declare(strict_types=1);
+
+namespace MyTube\\Handling\\{$pipelineNamespace};
+
+class ConfigProvider
+{
+    public function __invoke(): array
+    {
+        return [
+            'dependencies' => require  __DIR__ . './../config/service_manager.php',
+        ];
+    }
+}
+";
+    $configProviderFilePath = $pipelineDirectoryPath . 'src/ConfigProvider.php';
+    writeToFile($configProviderFilePath, $configProviderFileContent);
+
+}

composer.development.json

@@ -27,6 +27,8 @@
             "MyTube\\API\\Console\\": "src\/ApiDomain\/Console\/src",
             "MyTube\\API\\External\\Authentication\\": "src\/ApiDomain\/External\/Authentication\/src",
             "MyTube\\API\\External\\Health\\": "src\/ApiDomain\/External\/Health\/src",
+            "MyTube\\API\\External\\Tag\\": "src\/ApiDomain\/External\/Tag\/src",
+            "MyTube\\API\\External\\TagList\\": "src\/ApiDomain\/External\/TagList\/src",
             "MyTube\\API\\External\\User\\": "src\/ApiDomain\/External\/User\/src",
             "MyTube\\API\\External\\Video\\": "src\/ApiDomain\/External\/Video\/src",
             "MyTube\\API\\External\\VideoList\\": "src\/ApiDomain\/External\/VideoList\/src",
@@ -34,6 +36,8 @@
             "MyTube\\Data\\Log\\": "src\/DataDomain\/Log\/src",
             "MyTube\\Handling\\Registration\\": "src\/HandlingDomain\/Registration\/src",
             "MyTube\\Handling\\Role\\": "src\/HandlingDomain\/Role\/src",
+            "MyTube\\Handling\\Tag\\": "src\/HandlingDomain\/Tag\/src",
+            "MyTube\\Handling\\TagList\\": "src\/HandlingDomain\/TagList\/src",
             "MyTube\\Handling\\User\\": "src\/HandlingDomain\/User\/src",
             "MyTube\\Handling\\UserSession\\": "src\/HandlingDomain\/UserSession\/src",
             "MyTube\\Handling\\Video\\": "src\/HandlingDomain\/Video\/src",
@@ -95,6 +99,8 @@
         "psr-4": {
             "MyTube\\API\\External\\Authentication\\": "src\/ApiDomain\/External\/Authentication\/src",
             "MyTube\\API\\External\\Health\\": "src\/ApiDomain\/External\/Health\/src",
+            "MyTube\\API\\External\\Tag\\": "src\/ApiDomain\/External\/Tag\/src",
+            "MyTube\\API\\External\\TagList\\": "src\/ApiDomain\/External\/TagList\/src",
             "MyTube\\API\\External\\User\\": "src\/ApiDomain\/External\/User\/src",
             "MyTube\\API\\External\\Video\\": "src\/ApiDomain\/External\/Video\/src",
             "MyTube\\API\\External\\VideoList\\": "src\/ApiDomain\/External\/VideoList\/src",
@@ -102,6 +108,8 @@
             "MyTube\\Data\\Log\\": "src\/DataDomain\/Log\/src",
             "MyTube\\Handling\\Registration\\": "src\/HandlingDomain\/Registration\/src",
             "MyTube\\Handling\\Role\\": "src\/HandlingDomain\/Role\/src",
+            "MyTube\\Handling\\Tag\\": "src\/HandlingDomain\/Tag\/src",
+            "MyTube\\Handling\\TagList\\": "src\/HandlingDomain\/TagList\/src",
             "MyTube\\Handling\\User\\": "src\/HandlingDomain\/User\/src",
             "MyTube\\Handling\\UserSession\\": "src\/HandlingDomain\/UserSession\/src",
             "MyTube\\Handling\\Video\\": "src\/HandlingDomain\/Video\/src",

config/config.php

@@ -59,6 +59,8 @@ $aggregator = new ConfigAggregator([
     \MyTube\Handling\Registration\ConfigProvider::class,
     \MyTube\Handling\Video\ConfigProvider::class,
     \MyTube\Handling\VideoList\ConfigProvider::class,
+    \MyTube\Handling\Tag\ConfigProvider::class,
+    \MyTube\Handling\TagList\ConfigProvider::class,
 
     // API
     /// Command
@@ -70,6 +72,8 @@ $aggregator = new ConfigAggregator([
     \MyTube\API\External\Authentication\ConfigProvider::class,
     \MyTube\API\External\Video\ConfigProvider::class,
     \MyTube\API\External\VideoList\ConfigProvider::class,
+    \MyTube\API\External\Tag\ConfigProvider::class,
+    \MyTube\API\External\TagList\ConfigProvider::class,
 
     /// Internal
 

config/pipeline.php

@@ -3,6 +3,7 @@
 declare(strict_types=1);
 
 use MyTube\Infrastructure\Exception\Middleware\MyTubeExceptionHandlerMiddleware;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use MyTube\Infrastructure\Request\Middleware\AnalyzeHeaderMiddleware;
 use MyTube\Infrastructure\Session\Middleware\SessionMiddleware;
 use Laminas\Stratigility\Middleware\ErrorHandler;
@@ -69,6 +70,7 @@ return function (Application $app, MiddlewareFactory $factory, ContainerInterfac
     //// Pre MyTube Space
     $app->pipe(MyTubeExceptionHandlerMiddleware::class);
     $app->pipe(AnalyzeHeaderMiddleware::class);
+    $app->pipe(AnalyzeBodyMiddleware::class);
 
     //// MyTube Space
     $app->pipe(SessionMiddleware::class);

data/migrations/myTube/Version20240223130626.php

@@ -14,18 +14,24 @@ final class Version20240223130626 extends AbstractMigration
 {
     public function getDescription(): string
     {
-        return '';
+        return "Create Table 'tag'";
     }
 
     public function up(Schema $schema): void
     {
-        // this up() migration is auto-generated, please modify it to your needs
+        $sql = "CREATE TABLE tag (
+                    id binary(16) NOT NULL,
+                    description varchar(255) NOT NULL,
+                    created_at datetime NOT NULL,
+                    updated_at datetime NOT NULL,
+                    PRIMARY KEY (id)
+                );";
 
+        $this->addSql($sql);
     }
 
     public function down(Schema $schema): void
     {
-        // this down() migration is auto-generated, please modify it to your needs
-
+        $this->addSql("DROP TABLE tag;");
     }
 }

data/migrations/myTube/Version20240223130835.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Migrations\MyTube;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20240223130835 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return "Create Table 'tag_alias'";
+    }
+
+    public function up(Schema $schema): void
+    {
+        $sql = "CREATE TABLE tag_alias (
+                    id binary(16) NOT NULL,
+                    tag_id binary(16) NOT NULL,
+                    description varchar(255) NOT NULL,
+                    created_at datetime NOT NULL,
+                    updated_at datetime NOT NULL,
+                    PRIMARY KEY (id)
+                );";
+
+        $this->addSql($sql);
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql("DROP TABLE tag_alias;");
+    }
+}

data/migrations/myTube/Version20240223142111.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Migrations\MyTube;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20240223142111 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return "Create Table 'video_tag'";
+    }
+
+    public function up(Schema $schema): void
+    {
+        $sql = "CREATE TABLE video_tag (
+                    video_id binary(16) NOT NULL,
+                    tag_id binary(16) NOT NULL,
+                    PRIMARY KEY (video_id, tag_id)
+                );";
+
+        $this->addSql($sql);
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql("DROP TABLE video_tag;");
+    }
+}

docker/nginx/config/nginx.conf

@@ -5,7 +5,7 @@ upstream host-backend-app {
 server {
     listen 80 default_server;
 
-    client_max_body_size 1000M;
+    client_max_body_size 10000M;
 
     location / {
         fastcgi_pass host-backend-app;

docker/php/config/uploads.ini

@@ -1,5 +1,6 @@
 file_uploads = On
-memory_limit = 1000M
-upload_max_filesize = 1000M
-post_max_size = 1000M
-max_execution_time = 600
+max_file_uploads = 1000
+memory_limit = 10000M
+upload_max_filesize = 10000M
+post_max_size = 10000M
+max_execution_time = 1000

src/ApiDomain/Console/config/console.php

@@ -1,11 +1,15 @@
 <?php
 
+use MyTube\API\Console\Command\AnalyzeVideoTitlesCommand;
 use MyTube\API\Console\Command\InitializeDataCommand;
 use MyTube\API\Console\Command\RbacUpdateCommand;
+use MyTube\API\Console\Command\ReadUntaggedVideosCommand;
 
 return [
     'commands' => [
         InitializeDataCommand::class,
         RbacUpdateCommand::class,
+        AnalyzeVideoTitlesCommand::class,
+        ReadUntaggedVideosCommand::class,
     ]
 ];

src/ApiDomain/Console/config/service_manager.php

@@ -1,12 +1,16 @@
 <?php
 
+use MyTube\API\Console\Command\AnalyzeVideoTitlesCommand;
 use MyTube\API\Console\Command\InitializeDataCommand;
 use MyTube\API\Console\Command\RbacUpdateCommand;
+use MyTube\API\Console\Command\ReadUntaggedVideosCommand;
 use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
 
 return [
     'factories' => [
         InitializeDataCommand::class => AutoWiringFactory::class,
         RbacUpdateCommand::class => AutoWiringFactory::class,
+        AnalyzeVideoTitlesCommand::class => AutoWiringFactory::class,
+        ReadUntaggedVideosCommand::class => AutoWiringFactory::class,
     ],
 ];

src/ApiDomain/Console/src/Command/AnalyzeVideoTitlesCommand.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace MyTube\API\Console\Command;
+
+use MyTube\Data\Business\Entity\Tag;
+use MyTube\Data\Business\Entity\Video;
+use MyTube\Data\Business\Manager\MyTubeEntityManager;
+use MyTube\Data\Business\Repository\VideoRepository;
+use MyTube\Handling\Video\Analyzer\VideoTitleAnalyzer;
+use MyTube\Infrastructure\Logging\Logger\Logger;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+#[AsCommand(name: 'analyze:video-title', description: 'Analyzes video titles and add tags')]
+class AnalyzeVideoTitlesCommand extends Command
+{
+    private readonly VideoRepository $videoRepository;
+
+    public function __construct(
+        private readonly MyTubeEntityManager $entityManager,
+        private readonly VideoTitleAnalyzer $analyzer,
+        private readonly Logger $logger,
+    ) {
+        parent::__construct($this->getName());
+
+        $this->videoRepository = $this->entityManager->getRepository(Video::class);
+    }
+
+    protected function execute(
+        InputInterface $input,
+        OutputInterface $output
+    ): int {
+        $io = new SymfonyStyle($input, $output);
+
+        try {
+            $videos = $this->videoRepository->findAll();
+
+            /** @var Video $video */
+            foreach ($videos as $video) {
+                $io->info($video->getTitle());
+
+                $matches = $this->analyzer->analyze($video);
+
+                /** @var Tag $match */
+                foreach ($matches as $match) {
+                    echo sprintf("Added Tag '%s'", $match->getDescription());
+                }
+
+                $this->entityManager->persist($video);
+                $this->entityManager->flush();
+            }
+
+            $io->success('OK!');
+        } catch (\Throwable $e) {
+            $io->error($e->getMessage());
+            $io->error($e->getTraceAsString());
+            $this->logger->error($e->getMessage(), ['exception' => $e]);
+            return Command::FAILURE;
+        }
+
+        return Command::SUCCESS;
+    }
+}

src/ApiDomain/Console/src/Command/ReadUntaggedVideosCommand.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace MyTube\API\Console\Command;
+
+use MyTube\Data\Business\Entity\Tag;
+use MyTube\Data\Business\Entity\Video;
+use MyTube\Data\Business\Manager\MyTubeEntityManager;
+use MyTube\Data\Business\Repository\VideoRepository;
+use MyTube\Handling\Video\Analyzer\VideoTitleAnalyzer;
+use MyTube\Infrastructure\Logging\Logger\Logger;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+#[AsCommand(name: 'analyze:untagged', description: 'Returns the names of all untagged videos')]
+class ReadUntaggedVideosCommand extends Command
+{
+    private readonly VideoRepository $videoRepository;
+
+    public function __construct(
+        private readonly MyTubeEntityManager $entityManager,
+        private readonly Logger $logger,
+    ) {
+        parent::__construct($this->getName());
+
+        $this->videoRepository = $this->entityManager->getRepository(Video::class);
+    }
+
+    protected function execute(
+        InputInterface $input,
+        OutputInterface $output
+    ): int {
+        $io = new SymfonyStyle($input, $output);
+
+        try {
+            $qb = $this->videoRepository
+                ->createQueryBuilder('v')
+                ->leftJoin('v.tags', 't')
+                ->groupBy('v.id')
+                ->having('COUNT(t.id) = 0')
+                ->orderBy('v.title');
+
+            $videos = $qb->getQuery()->execute();
+
+            /** @var Video $video */
+            foreach ($videos as $video) {
+                echo $video->getTitle() . PHP_EOL;
+            }
+
+            $io->info('total: ' . count($videos));
+
+            $io->success('OK!');
+        } catch (\Throwable $e) {
+            $io->error($e->getMessage());
+            $io->error($e->getTraceAsString());
+            $this->logger->error($e->getMessage(), ['exception' => $e]);
+            return Command::FAILURE;
+        }
+
+        return Command::SUCCESS;
+    }
+}

src/ApiDomain/External/Authentication/src/Handler/ConfirmRegistrationHandler.php

@@ -7,6 +7,7 @@ namespace MyTube\API\External\Authentication\Handler;
 use MyTube\API\External\User\Formatter\UserFormatter;
 use MyTube\Handling\Registration\Handler\Command\ConfirmRegistration\ConfirmRegistrationCommandBuilder;
 use MyTube\Handling\Registration\Handler\Command\ConfirmRegistration\ConfirmRegistrationCommandHandler;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use MyTube\Infrastructure\Session\Middleware\SessionMiddleware;
 use Laminas\Diactoros\Response\JsonResponse;
 use Psr\Http\Message\ResponseInterface;
@@ -25,10 +26,7 @@ class ConfirmRegistrationHandler implements RequestHandlerInterface
 
     public function handle(ServerRequestInterface $request): ResponseInterface
     {
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $query = $this->builder->build(
             Uuid::fromString($data['id']),

src/ApiDomain/External/Authentication/src/Handler/LoginUserHandler.php

@@ -6,6 +6,7 @@ namespace MyTube\API\External\Authentication\Handler;
 
 use MyTube\Handling\UserSession\Handler\Command\LoginUser\LoginUserCommandBuilder;
 use MyTube\Handling\UserSession\Handler\Command\LoginUser\LoginUserCommandHandler;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use MyTube\Infrastructure\Session\Middleware\SessionMiddleware;
 use Laminas\Diactoros\Response\JsonResponse;
 use Psr\Http\Message\ResponseInterface;
@@ -23,10 +24,7 @@ class LoginUserHandler implements RequestHandlerInterface
     public function handle(ServerRequestInterface $request): ResponseInterface
     {
         $session = $request->getAttribute(SessionMiddleware::SESSION_ATTRIBUTE);
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $query = $this->builder->build(
             $session,

src/ApiDomain/External/Authentication/src/Handler/RegisterUserHandler.php

@@ -8,6 +8,7 @@ use MyTube\Handling\Registration\Handler\Command\RegisterUser\RegisterUserComman
 use MyTube\Handling\Registration\Handler\Command\RegisterUser\RegisterUserCommandHandler;
 use MyTube\Infrastructure\Exception\Middleware\MyTubeExceptionHandlerMiddleware;
 use MyTube\Infrastructure\Logging\Logger\Logger;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use MyTube\Infrastructure\Request\Middleware\AnalyzeHeaderMiddleware;
 use MyTube\Infrastructure\Response\SuccessResponse;
 use MyTube\Infrastructure\Session\Middleware\SessionMiddleware;
@@ -28,10 +29,7 @@ class RegisterUserHandler implements RequestHandlerInterface
     public function handle(ServerRequestInterface $request): ResponseInterface
     {
         $host = $request->getAttribute(AnalyzeHeaderMiddleware::HOST_ATTRIBUTE);
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $query = $this->builder->build(
             $data['username'],

src/ApiDomain/External/Tag/config/routes.php

@@ -0,0 +1,41 @@
+<?php
+
+use MyTube\API\External\Tag\Handler\AddAliasHandler;
+use MyTube\API\External\Tag\Handler\CreateHandler;
+use MyTube\API\External\Tag\Handler\ReadDetailsHandler;
+use MyTube\API\External\Tag\Handler\ReadVideoListHandler;
+
+return [
+    [
+        'name' => 'tag.create',
+        'path' => '/api/tag/create[/]',
+        'allowed_methods' => ['POST'],
+        'middleware' => [
+            CreateHandler::class,
+        ],
+    ],
+    [
+        'name' => 'tag.add-alias',
+        'path' => '/api/tag/add-alias[/]',
+        'allowed_methods' => ['POST'],
+        'middleware' => [
+            AddAliasHandler::class,
+        ],
+    ],
+    [
+        'name' => 'tag.read-details',
+        'path' => '/api/tag/read-details[/]',
+        'allowed_methods' => ['POST'],
+        'middleware' => [
+            ReadDetailsHandler::class,
+        ],
+    ],
+    [
+        'name' => 'tag.read-video-list',
+        'path' => '/api/tag/read-video-list[/]',
+        'allowed_methods' => ['POST'],
+        'middleware' => [
+            ReadVideoListHandler::class,
+        ],
+    ],
+];

src/ApiDomain/External/Tag/config/service_manager.php

@@ -0,0 +1,27 @@
+<?php
+
+use MyTube\API\External\Tag\Handler\AddAliasHandler;
+use MyTube\API\External\Tag\Handler\CreateHandler;
+use MyTube\API\External\Tag\Handler\ReadDetailsHandler;
+use MyTube\API\External\Tag\Handler\ReadVideoListHandler;
+use MyTube\API\External\Tag\ResponseFormatter\AddAliasResponseFormatter;
+use MyTube\API\External\Tag\ResponseFormatter\CreateResponseFormatter;
+use MyTube\API\External\Tag\ResponseFormatter\ReadDetailsResponseFormatter;
+use MyTube\API\External\Tag\ResponseFormatter\ReadVideoListResponseFormatter;
+use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
+
+return [
+    'factories' => [
+        // Handler
+        AddAliasHandler::class => AutoWiringFactory::class,
+        CreateHandler::class => AutoWiringFactory::class,
+        ReadDetailsHandler::class => AutoWiringFactory::class,
+        ReadVideoListHandler::class => AutoWiringFactory::class,
+
+        // Response Formatter
+        AddAliasResponseFormatter::class => AutoWiringFactory::class,
+        CreateResponseFormatter::class => AutoWiringFactory::class,
+        ReadDetailsResponseFormatter::class => AutoWiringFactory::class,
+        ReadVideoListResponseFormatter::class => AutoWiringFactory::class,
+    ],
+];

src/ApiDomain/External/Tag/src/ConfigProvider.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag;
+
+class ConfigProvider
+{
+    public function __invoke(): array
+    {
+        return [
+            'dependencies' => require  __DIR__ . './../config/service_manager.php',
+            'routes' => require __DIR__ . '/./../config/routes.php',
+        ];
+    }
+}

src/ApiDomain/External/Tag/src/Handler/AddAliasHandler.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\Handler;
+
+use MyTube\Handling\Tag\Exception\TagAliasAlreadyExistsException;
+use MyTube\Handling\Tag\Exception\TagNotFoundByIdException;
+use MyTube\Handling\Tag\Handler\Command\AddAlias\AddAliasCommandHandler;
+use MyTube\Handling\Tag\Handler\Command\AddAlias\AddAliasCommandBuilder;
+use MyTube\API\External\Tag\ResponseFormatter\AddAliasResponseFormatter;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use MyTube\Infrastructure\Response\SuccessResponse;
+use Ramsey\Uuid\Uuid;
+
+class AddAliasHandler implements RequestHandlerInterface
+{
+    public function __construct(
+        private readonly AddAliasCommandHandler $addAliasCommandHandler,
+        private readonly AddAliasCommandBuilder $addAliasCommandBuilder,
+        private readonly AddAliasResponseFormatter $responseFormatter,
+    ) {
+    }
+
+    /**
+     * @throws TagNotFoundByIdException
+     * @throws TagAliasAlreadyExistsException
+     */
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
+
+        $addAliasCommand = $this->addAliasCommandBuilder->build(
+            Uuid::fromString($data['tagId']),
+            $data['description']
+        );
+        $result = $this->addAliasCommandHandler->execute($addAliasCommand);
+        
+        return new SuccessResponse($this->responseFormatter->format($result));
+    }
+}

src/ApiDomain/External/Tag/src/Handler/CreateHandler.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\Handler;
+
+use MyTube\Handling\Tag\Exception\TagAlreadyExistsException;
+use MyTube\Handling\Tag\Handler\Command\Create\CreateCommandHandler;
+use MyTube\Handling\Tag\Handler\Command\Create\CreateCommandBuilder;
+use MyTube\API\External\Tag\ResponseFormatter\CreateResponseFormatter;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use MyTube\Infrastructure\Response\SuccessResponse;
+
+class CreateHandler implements RequestHandlerInterface
+{
+    public function __construct(
+        private readonly CreateCommandHandler $createCommandHandler,
+        private readonly CreateCommandBuilder $createCommandBuilder,
+        private readonly CreateResponseFormatter $responseFormatter,
+    ) {
+    }
+
+    /**
+     * @throws TagAlreadyExistsException
+     */
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
+
+        $createCommand = $this->createCommandBuilder->build(
+            $data['description']
+        );
+        $result = $this->createCommandHandler->execute($createCommand);
+        
+        return new SuccessResponse($this->responseFormatter->format($result));
+    }
+}

src/ApiDomain/External/Tag/src/Handler/ReadDetailsHandler.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\Handler;
+
+use MyTube\Handling\Tag\Exception\TagNotFoundByIdException;
+use MyTube\Handling\Tag\Handler\Query\ReadDetails\ReadDetailsQueryHandler;
+use MyTube\Handling\Tag\Handler\Query\ReadDetails\ReadDetailsQueryBuilder;
+use MyTube\API\External\Tag\ResponseFormatter\ReadDetailsResponseFormatter;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
+use MyTube\Infrastructure\Response\SuccessResponse;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Ramsey\Uuid\Uuid;
+
+class ReadDetailsHandler implements RequestHandlerInterface
+{
+    public function __construct(
+        private readonly ReadDetailsQueryHandler $readDetailsQueryHandler,
+        private readonly ReadDetailsQueryBuilder $readDetailsQueryBuilder,
+        private readonly ReadDetailsResponseFormatter $responseFormatter,
+    ) {
+    }
+
+    /**
+     * @throws TagNotFoundByIdException
+     */
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
+
+        $readDetailsQuery = $this->readDetailsQueryBuilder->build(
+            Uuid::fromString($data['tagId']),
+        );
+        $result = $this->readDetailsQueryHandler->execute($readDetailsQuery);
+        
+        return new SuccessResponse($this->responseFormatter->format($result));
+    }
+}

src/ApiDomain/External/Tag/src/Handler/ReadVideoListHandler.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\Handler;
+
+use MyTube\Handling\Tag\Handler\Query\ReadVideoList\ReadVideoListQueryHandler;
+use MyTube\Handling\Tag\Handler\Query\ReadVideoList\ReadVideoListQueryBuilder;
+use MyTube\API\External\Tag\ResponseFormatter\ReadVideoListResponseFormatter;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
+use MyTube\Infrastructure\Response\SuccessResponse;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Ramsey\Uuid\Uuid;
+
+class ReadVideoListHandler implements RequestHandlerInterface
+{
+    public function __construct(
+        private readonly ReadVideoListQueryHandler $readVideoListQueryHandler,
+        private readonly ReadVideoListQueryBuilder $readVideoListQueryBuilder,
+        private readonly ReadVideoListResponseFormatter $responseFormatter,
+    ) {
+    }
+    
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
+
+        $readVideoListQuery = $this->readVideoListQueryBuilder->build(
+            Uuid::fromString($data['tagId']),
+            $data['query'] ?? null,
+            $data['page'],
+            $data['perPage'],
+        );
+        $result = $this->readVideoListQueryHandler->execute($readVideoListQuery);
+        
+        return new SuccessResponse($this->responseFormatter->format($result));
+    }
+}

src/ApiDomain/External/Tag/src/ResponseFormatter/AddAliasResponseFormatter.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\ResponseFormatter;
+
+use MyTube\Handling\Tag\Handler\Command\AddAlias\AddAliasCommandResult;
+
+class AddAliasResponseFormatter
+{
+    public function format(AddAliasCommandResult $addAliasCommandResult): array
+    {
+        $alias = $addAliasCommandResult->getAlias();
+        $tag = $alias->getTag();
+
+        return [
+            'id' => $alias->getId()->toString(),
+            'description' => $alias->getDescription(),
+            'tag' => [
+                'id' => $tag->getId()->toString(),
+                'description' => $tag->getDescription()
+            ],
+        ];
+    }
+}

src/ApiDomain/External/Tag/src/ResponseFormatter/CreateResponseFormatter.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\ResponseFormatter;
+
+use MyTube\Handling\Tag\Handler\Command\Create\CreateCommandResult;
+
+class CreateResponseFormatter
+{
+    public function format(CreateCommandResult $createCommandResult): array
+    {
+        $tag = $createCommandResult->getTag();
+        return [
+            'id' => $tag->getId()->toString(),
+            'description' => $tag->getDescription(),
+        ];
+    }
+}

src/ApiDomain/External/Tag/src/ResponseFormatter/ReadDetailsResponseFormatter.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\ResponseFormatter;
+
+use MyTube\Data\Business\Entity\TagAlias;
+use MyTube\Handling\Tag\Handler\Query\ReadDetails\ReadDetailsQueryResult;
+
+class ReadDetailsResponseFormatter
+{
+    public function format(ReadDetailsQueryResult $readDetailsQueryResult): array
+    {
+        $tag = $readDetailsQueryResult->getTag();
+
+        $aliases = [];
+
+        /** @var TagAlias $alias */
+        foreach ($tag->getAliases() as $alias) {
+            $aliases[] = $alias->getDescription();
+        }
+
+        return [
+            'id' => $tag->getId()->toString(),
+            'description' => $tag->getDescription(),
+            'aliases' => $aliases
+        ];
+    }
+}

src/ApiDomain/External/Tag/src/ResponseFormatter/ReadVideoListResponseFormatter.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\Tag\ResponseFormatter;
+
+use MyTube\Data\Business\Entity\Tag;
+use MyTube\Data\Business\Entity\Video;
+use MyTube\Handling\Tag\Handler\Query\ReadVideoList\ReadVideoListQueryResult;
+
+class ReadVideoListResponseFormatter
+{
+    public function format(ReadVideoListQueryResult $readVideoListQueryResult): array
+    {
+        $paginator = $readVideoListQueryResult->getPaginator();
+        $videos = $paginator->getIterator();
+
+        $items = [];
+
+        /** @var Video $video */
+        foreach ($videos as $video) {
+            $tags = [];
+
+            /** @var Tag $tag */
+            foreach ($video->getTags() as $tag) {
+                $tags[] = [
+                    'id' => $tag->getId(),
+                    'description' => $tag->getDescription()
+                ];
+            }
+
+            $items[] = [
+                'title' => $video->getTitle(),
+                'id' => $video->getId(),
+                'tags' => $tags
+            ];
+        }
+
+        return [
+            'total' => $paginator->count(),
+            'items' => $items,
+        ];
+    }
+}

src/ApiDomain/External/TagList/config/routes.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+use MyTube\API\External\TagList\Handler\ReadListHandler;
+
+return [
+    [
+        'name' => 'tag-list.read-list',
+        'path' => '/api/tag-list/read-list[/]',
+        'allowed_methods' => ['POST'],
+        'middleware' => [
+            ReadListHandler::class,
+        ],
+    ],
+];

src/ApiDomain/External/TagList/config/service_manager.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use MyTube\API\External\TagList\Handler\ReadListHandler;
+use MyTube\API\External\TagList\ResponseFormatter\ReadListResponseFormatter;
+use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
+
+return [
+    'factories' => [
+        // Handler
+        ReadListHandler::class => AutoWiringFactory::class,
+
+        // Response Formatter
+        ReadListResponseFormatter::class => AutoWiringFactory::class,
+    ],
+];

src/ApiDomain/External/TagList/src/ConfigProvider.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\TagList;
+
+class ConfigProvider
+{
+    public function __invoke(): array
+    {
+        return [
+            'dependencies' => require  __DIR__ . './../config/service_manager.php',
+            'routes' => require __DIR__ . '/./../config/routes.php',
+        ];
+    }
+}

src/ApiDomain/External/TagList/src/Handler/ReadListHandler.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\TagList\Handler;
+
+use MyTube\Handling\TagList\Handler\Query\ReadList\ReadListQueryHandler;
+use MyTube\Handling\TagList\Handler\Query\ReadList\ReadListQueryBuilder;
+use MyTube\API\External\TagList\ResponseFormatter\ReadListResponseFormatter;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
+use MyTube\Infrastructure\Response\SuccessResponse;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+class ReadListHandler implements RequestHandlerInterface
+{
+    public function __construct(
+        private readonly ReadListQueryHandler $readListQueryHandler,
+        private readonly ReadListQueryBuilder $readListQueryBuilder,
+        private readonly ReadListResponseFormatter $responseFormatter,
+    ) {
+    }
+    
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
+
+        $readListQuery = $this->readListQueryBuilder->build(
+            $data['query'] ?? null,
+        );
+        $result = $this->readListQueryHandler->execute($readListQuery);
+        
+        return new SuccessResponse($this->responseFormatter->format($result));
+    }
+}

src/ApiDomain/External/TagList/src/ResponseFormatter/ReadListResponseFormatter.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\TagList\ResponseFormatter;
+
+use MyTube\Data\Business\Entity\Tag;
+use MyTube\Handling\TagList\Handler\Query\ReadList\ReadListQueryResult;
+
+class ReadListResponseFormatter
+{
+    public function format(ReadListQueryResult $readListQueryResult): array
+    {
+        $tags = $readListQueryResult->getItems();
+        $items = [];
+
+        /** @var Tag $tag */
+        foreach ($tags as $tag) {
+            $items[] = [
+                'id' => $tag->getId()->toString(),
+                'description' => $tag->getDescription(),
+            ];
+        }
+
+        return [
+            'total' => count($items),
+            'items' => $items,
+        ];
+    }
+}

src/ApiDomain/External/User/src/Handler/ChangePasswordHandler.php

@@ -26,10 +26,7 @@ class ChangePasswordHandler implements RequestHandlerInterface
         /** @var User $user */
         $user = $request->getAttribute(LoggedInUserMiddleware::USER_KEY);
 
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $query = $this->builder->build(
             $user,

src/ApiDomain/External/User/src/Handler/ChangeUsernameHandler.php

@@ -7,6 +7,7 @@ namespace MyTube\API\External\User\Handler;
 use MyTube\Data\Business\Entity\User;
 use MyTube\Handling\User\Handler\Command\ChangeUsername\ChangeUsernameCommandBuilder;
 use MyTube\Handling\User\Handler\Command\ChangeUsername\ChangeUsernameCommandHandler;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use MyTube\Infrastructure\Response\SuccessResponse;
 use MyTube\Infrastructure\Session\Middleware\LoggedInUserMiddleware;
 use Psr\Http\Message\ResponseInterface;
@@ -25,11 +26,7 @@ class ChangeUsernameHandler implements RequestHandlerInterface
     {
         /** @var User $user */
         $user = $request->getAttribute(LoggedInUserMiddleware::USER_KEY);
-
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $query = $this->builder->build(
             $user,

src/ApiDomain/External/User/src/Handler/CreateUserHandler.php

@@ -8,6 +8,7 @@ use MyTube\API\External\User\Formatter\UserFormatter;
 use MyTube\Handling\User\Handler\Command\CreateUser\CreateUserCommandBuilder;
 use MyTube\Handling\User\Handler\Command\CreateUser\CreateUserCommandHandler;
 use Laminas\Diactoros\Response\JsonResponse;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\RequestHandlerInterface;
@@ -23,10 +24,7 @@ class CreateUserHandler implements RequestHandlerInterface
 
     public function handle(ServerRequestInterface $request): ResponseInterface
     {
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $query = $this->builder->build(
             $data['username'],

src/ApiDomain/External/Video/src/Handler/ReadDetailsHandler.php

@@ -8,6 +8,7 @@ use MyTube\Handling\Video\Exception\VideoNotFoundByIdException;
 use MyTube\Handling\Video\Handler\Query\ReadDetails\ReadDetailsQueryHandler;
 use MyTube\Handling\Video\Handler\Query\ReadDetails\ReadDetailsQueryBuilder;
 use MyTube\API\External\Video\ResponseFormatter\ReadDetailsResponseFormatter;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\RequestHandlerInterface;
@@ -28,10 +29,7 @@ class ReadDetailsHandler implements RequestHandlerInterface
      */
     public function handle(ServerRequestInterface $request): ResponseInterface
     {
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $readDetailsQuery = $this->readDetailsQueryBuilder->build(
             Uuid::fromString($data['videoId'])

src/ApiDomain/External/Video/src/ResponseFormatter/ReadDetailsResponseFormatter.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace MyTube\API\External\Video\ResponseFormatter;
 
+use MyTube\Data\Business\Entity\Tag;
 use MyTube\Handling\Video\Handler\Query\ReadDetails\ReadDetailsQueryResult;
 
 class ReadDetailsResponseFormatter
@@ -12,9 +13,20 @@ class ReadDetailsResponseFormatter
     {
         $video = $readDetailsQueryResult->getVideo();
 
+        $tags = [];
+
+        /** @var Tag $tag */
+        foreach ($video->getTags() as $tag) {
+            $tags = [
+                'id' => $tag->getId(),
+                'description' => $tag->getDescription(),
+            ];
+        }
+
         return [
             'id' => $video->getId(),
-            'title' => $video->getTitle()
+            'title' => $video->getTitle(),
+            'tags' => $tags,
         ];
     }
 }

src/ApiDomain/External/VideoList/config/routes.php

@@ -1,6 +1,7 @@
 <?php
 
 use MyTube\API\External\VideoList\Handler\ReadListHandler;
+use MyTube\API\External\VideoList\Handler\UploadHandler;
 
 return [
     [
@@ -11,4 +12,12 @@ return [
             ReadListHandler::class
         ],
     ],
+    [
+        'name' => 'video-list.upload',
+        'path' => '/api/video-list/upload[/]',
+        'allowed_methods' => ['POST'],
+        'middleware' => [
+            UploadHandler::class
+        ],
+    ],
 ];

src/ApiDomain/External/VideoList/config/service_manager.php

@@ -1,15 +1,17 @@
 <?php
 
-use MyTube\API\External\Video\Handler\StreamHandler;
-use MyTube\API\External\Video\Handler\UploadHandler;
+use MyTube\API\External\VideoList\Handler\UploadHandler;
 use MyTube\API\External\VideoList\Handler\ReadListHandler;
 use MyTube\API\External\VideoList\ResponseFormatter\ReadListResponseFormatter;
+use MyTube\API\External\VideoList\ResponseFormatter\UploadResponseFormatter;
 use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
 
 return [
     'factories' => [
         ReadListHandler::class => AutoWiringFactory::class,
+        UploadHandler::class => AutoWiringFactory::class,
 
         ReadListResponseFormatter::class => AutoWiringFactory::class,
+        UploadResponseFormatter::class => AutoWiringFactory::class,
     ],
 ];

src/ApiDomain/External/VideoList/src/Handler/ReadListHandler.php

@@ -5,8 +5,9 @@ declare(strict_types=1);
 namespace MyTube\API\External\VideoList\Handler;
 
 use MyTube\API\External\VideoList\ResponseFormatter\ReadListResponseFormatter;
-use MyTube\Handling\VideoList\Handler\Query\ReadList\ReadListQueryHandler;
 use MyTube\Handling\VideoList\Handler\Query\ReadList\ReadListQueryBuilder;
+use MyTube\Handling\VideoList\Handler\Query\ReadList\ReadListQueryHandler;
+use MyTube\Infrastructure\Request\Middleware\AnalyzeBodyMiddleware;
 use MyTube\Infrastructure\Response\SuccessResponse;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
@@ -23,13 +24,12 @@ class ReadListHandler implements RequestHandlerInterface
     
     public function handle(ServerRequestInterface $request): ResponseInterface
     {
-        $data = json_decode(
-            $request->getBody()->getContents(),
-            true
-        );
+        $data = $request->getAttribute(AnalyzeBodyMiddleware::JSON_DATA);
 
         $readListQuery = $this->readListQueryBuilder->build(
-            $data
+            $data['query'] ?? null,
+            $data['page'],
+            $data['perPage'],
         );
         $result = $this->readListQueryHandler->execute($readListQuery);
         

src/ApiDomain/External/VideoList/src/Handler/UploadHandler.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\VideoList\Handler;
+
+use Laminas\Diactoros\Response\JsonResponse;
+use Laminas\Http\Response;
+use MyTube\Handling\VideoList\Handler\Command\Upload\UploadCommandHandler;
+use MyTube\Handling\VideoList\Handler\Command\Upload\UploadCommandBuilder;
+use MyTube\API\External\VideoList\ResponseFormatter\UploadResponseFormatter;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use MyTube\Infrastructure\Response\SuccessResponse;
+
+class UploadHandler implements RequestHandlerInterface
+{
+    public function __construct(
+        private readonly UploadCommandHandler $uploadCommandHandler,
+        private readonly UploadCommandBuilder $uploadCommandBuilder,
+        private readonly UploadResponseFormatter $responseFormatter,
+    ) {
+    }
+    
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $uploadedFiles = $request->getUploadedFiles();
+
+        if (count($uploadedFiles) < 1) {
+            return new JsonResponse('Upload at least one File', Response::STATUS_CODE_400);
+        }
+
+        $uploadCommand = $this->uploadCommandBuilder->build(
+            $request->getUploadedFiles()
+        );
+        $result = $this->uploadCommandHandler->execute($uploadCommand);
+        
+        return new SuccessResponse($this->responseFormatter->format($result));
+    }
+}

src/ApiDomain/External/VideoList/src/ResponseFormatter/ReadListResponseFormatter.php

@@ -4,22 +4,41 @@ declare(strict_types=1);
 
 namespace MyTube\API\External\VideoList\ResponseFormatter;
 
+use MyTube\Data\Business\Entity\Tag;
 use MyTube\Data\Business\Entity\Video;
+use MyTube\Handling\VideoList\Handler\Query\ReadList\ReadListQueryResult;
 
 class ReadListResponseFormatter
 {
-    public function format(array $videos): array
+    public function format(ReadListQueryResult $queryResult): array
     {
-        $result = [];
+        $paginator = $queryResult->getPaginator();
+        $videos = $paginator->getIterator();
+
+        $items = [];
 
         /** @var Video $video */
         foreach ($videos as $video) {
-            $result[] = [
+            $tags = [];
+
+            /** @var Tag $tag */
+            foreach ($video->getTags() as $tag) {
+                $tags[] = [
+                    'id' => $tag->getId(),
+                    'description' => $tag->getDescription()
+                ];
+            }
+
+            $items[] = [
                 'title' => $video->getTitle(),
-                'id' => $video->getId()->toString(),
+                'id' => $video->getId(),
+                'tags' => $tags
             ];
         }
 
-        return $result;
+        return [
+            'total' => $paginator->count(),
+            'items' => $items,
+        ];
     }
 }

src/ApiDomain/External/VideoList/src/ResponseFormatter/UploadResponseFormatter.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\API\External\VideoList\ResponseFormatter;
+
+use MyTube\Handling\VideoList\Handler\Command\Upload\UploadCommandResult;
+use MyTube\Handling\VideoList\Model\UploadedFileResult;
+
+class UploadResponseFormatter
+{
+    public function format(UploadCommandResult $uploadCommandResult): array
+    {
+        $uploadedFileResults = $uploadCommandResult->getUploadedFileResults();
+        $details = [];
+
+        $successCount = 0;
+        $failCount = 0;
+
+        /** @var UploadedFileResult $uploadedFileResult */
+        foreach ($uploadedFileResults as $uploadedFileResult) {
+
+            $detail = [
+                'file' => $uploadedFileResult->getUploadedFile()->getClientFilename(),
+                'success' => $uploadedFileResult->getSuccess(),
+            ];
+
+            if ($uploadedFileResult->getSuccess()) {
+                $detail['id'] = $uploadedFileResult->getVideo()->getId()->toString();
+                $successCount++;
+            } else {
+                $detail['error'] = $uploadedFileResult->getException()->getMessage();
+                $failCount++;
+            }
+
+            $details[] = $detail;
+        }
+
+        return [
+            'total' => count($uploadedFileResults),
+            'failed' => $failCount,
+            'succeeded' => $successCount,
+            'details' => $details
+        ];
+    }
+}

src/DataDomain/Business/src/Entity/Tag.php

@@ -0,0 +1,119 @@
+<?php
+
+namespace MyTube\Data\Business\Entity;
+
+use DateTime;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\Mapping as ORM;
+use MyTube\Infrastructure\UuidGenerator\UuidGenerator;
+use Ramsey\Uuid\UuidInterface;
+
+/**
+ * @ORM\Entity(repositoryClass="MyTube\Data\Business\Repository\TagRepository")
+ * @ORM\Table(name="tag")
+ */
+class Tag {
+    /**
+     * @ORM\Id
+     * @ORM\Column(name="id", type="uuid_binary_ordered_time")
+     */
+    private UuidInterface $id;
+
+    /** @ORM\Column(name="description", type="string") */
+    private string $description;
+
+    /**
+     * @ORM\ManyToMany(targetEntity="Video", mappedBy="tags")
+     * @ORM\JoinTable(name="video_tag")
+     */
+    private Collection $videos;
+
+    /** @ORM\OneToMany(targetEntity="TagAlias", mappedBy="tag") */
+    private Collection $aliases;
+
+    /** @ORM\Column(name="created_at", type="datetime") */
+    private DateTime $createdAt;
+
+    /** @ORM\Column(name="updated_at", type="datetime") */
+    private DateTime $updatedAt;
+
+
+    public function __construct() {
+        $this->id = UuidGenerator::generate();
+
+        $this->aliases = new ArrayCollection();
+        $this->videos = new ArrayCollection();
+
+        $now = new DateTime();
+        $this->setCreatedAt($now);
+        $this->setUpdatedAt($now);
+    }
+
+    public function getId(): UuidInterface {
+        return $this->id;
+    }
+
+    public function getDescription(): string {
+        return $this->description;
+    }
+    public function setDescription(string $description): void {
+        $this->description = $description;
+    }
+
+    public function getVideos(): Collection
+    {
+        return $this->videos;
+    }
+    public function setVideos(Collection $videos): void
+    {
+        $this->videos = $videos;
+    }
+    public function addVideo(Video $video): void
+    {
+        if (!$this->videos->contains($video)) {
+            $this->videos->add($video);
+        }
+    }
+    public function removeVideo(Video $video): void
+    {
+        if ($this->videos->contains($video)) {
+            $this->videos->removeElement($video);
+        }
+    }
+
+    public function getAliases(): Collection
+    {
+        return $this->aliases;
+    }
+    public function setAliases(Collection $aliases): void
+    {
+        $this->aliases = $aliases;
+    }
+    public function addAlias(TagAlias $alias): void
+    {
+        if (!$this->aliases->contains($alias)) {
+            $this->aliases->add($alias);
+        }
+    }
+    public function removeAlias(TagAlias $alias): void
+    {
+        if ($this->aliases->contains($alias)) {
+            $this->aliases->removeElement($alias);
+        }
+    }
+
+    public function getCreatedAt(): DateTime {
+        return $this->createdAt;
+    }
+    public function setCreatedAt(DateTime $createdAt): void {
+        $this->createdAt = $createdAt;
+    }
+
+    public function getUpdatedAt(): DateTime {
+        return $this->updatedAt;
+    }
+    public function setUpdatedAt(DateTime $updatedAt): void {
+        $this->updatedAt = $updatedAt;
+    }
+}

src/DataDomain/Business/src/Entity/TagAlias.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace MyTube\Data\Business\Entity;
+
+use DateTime;
+use Doctrine\ORM\Mapping as ORM;
+use MyTube\Infrastructure\UuidGenerator\UuidGenerator;
+use Ramsey\Uuid\UuidInterface;
+
+/**
+ * @ORM\Entity(repositoryClass="MyTube\Data\Business\Repository\TagAliasRepository")
+ * @ORM\Table(name="tag_alias")
+ */
+class TagAlias {
+    /**
+     * @ORM\Id
+     * @ORM\Column(name="id", type="uuid_binary_ordered_time")
+     */
+    private UuidInterface $id;
+
+    /** @ORM\Column(name="tag_id", type="uuid_binary_ordered_time") */
+    private UuidInterface $tagId;
+
+    /**
+     * @ORM\ManyToOne(targetEntity="Tag", inversedBy="aliases")
+     * @ORM\JoinColumn(name="tag_id", referencedColumnName="id")
+     */
+    private Tag $tag;
+
+    /** @ORM\Column(name="description", type="string") */
+    private string $description;
+
+    /** @ORM\Column(name="created_at", type="datetime") */
+    private DateTime $createdAt;
+
+    /** @ORM\Column(name="updated_at", type="datetime") */
+    private DateTime $updatedAt;
+
+
+    public function __construct() {
+        $this->id = UuidGenerator::generate();
+        
+        $now = new DateTime();
+        $this->setCreatedAt($now);
+        $this->setUpdatedAt($now);
+    }
+
+    public function getId(): UuidInterface {
+        return $this->id;
+    }
+
+    public function getTagId(): UuidInterface
+    {
+        return $this->tagId;
+    }
+    public function setTagId(UuidInterface $tagId): void
+    {
+        $this->tagId = $tagId;
+    }
+
+    public function getTag(): Tag
+    {
+        return $this->tag;
+    }
+    public function setTag(Tag $tag): void
+    {
+        $this->tag = $tag;
+    }
+
+    public function getDescription(): string {
+        return $this->description;
+    }
+    public function setDescription(string $description): void {
+        $this->description = $description;
+    }
+
+    public function getCreatedAt(): DateTime {
+        return $this->createdAt;
+    }
+    public function setCreatedAt(DateTime $createdAt): void {
+        $this->createdAt = $createdAt;
+    }
+
+    public function getUpdatedAt(): DateTime {
+        return $this->updatedAt;
+    }
+    public function setUpdatedAt(DateTime $updatedAt): void {
+        $this->updatedAt = $updatedAt;
+    }
+}

src/DataDomain/Business/src/Entity/Video.php

@@ -3,6 +3,8 @@
 namespace MyTube\Data\Business\Entity;
 
 use DateTime;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 use MyTube\Infrastructure\UuidGenerator\UuidGenerator;
 use Ramsey\Uuid\UuidInterface;
@@ -24,6 +26,12 @@ class Video {
     /** @ORM\Column(name="directory_path", type="string") */
     private ?string $directoryPath;
 
+    /**
+     * @ORM\ManyToMany(targetEntity="Tag", inversedBy="videos")
+     * @ORM\JoinTable(name="video_tag")
+     */
+    private Collection $tags;
+
     /** @ORM\Column(name="created_at", type="datetime") */
     private DateTime $createdAt;
 
@@ -33,7 +41,9 @@ class Video {
 
     public function __construct() {
         $this->id = UuidGenerator::generate();
-        
+
+        $this->tags = new ArrayCollection();
+
         $now = new DateTime();
         $this->setCreatedAt($now);
         $this->setUpdatedAt($now);
@@ -47,7 +57,6 @@ class Video {
     public function getTitle(): string {
         return $this->title;
     }
-
     public function setTitle(string $title): void {
         $this->title = $title;
     }
@@ -55,15 +64,34 @@ class Video {
     public function getDirectoryPath(): ?string {
         return $this->directoryPath;
     }
-
     public function setDirectoryPath(?string $directoryPath): void {
         $this->directoryPath = $directoryPath;
     }
 
+    public function getTags(): Collection
+    {
+        return $this->tags;
+    }
+    public function setTags(Collection $tags): void
+    {
+        $this->tags = $tags;
+    }
+    public function addTag(Tag $tag): void
+    {
+        if (!$this->tags->contains($tag)) {
+            $this->tags->add($tag);
+        }
+    }
+    public function removeTag(Tag $tag): void
+    {
+        if ($this->tags->contains($tag)) {
+            $this->tags->removeElement($tag);
+        }
+    }
+
     public function getCreatedAt(): DateTime {
         return $this->createdAt;
     }
-
     public function setCreatedAt(DateTime $createdAt): void {
         $this->createdAt = $createdAt;
     }
@@ -71,7 +99,6 @@ class Video {
     public function getUpdatedAt(): DateTime {
         return $this->updatedAt;
     }
-
     public function setUpdatedAt(DateTime $updatedAt): void {
         $this->updatedAt = $updatedAt;
     }

src/DataDomain/Business/src/Repository/TagAliasRepository.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace MyTube\Data\Business\Repository;
+
+use Doctrine\ORM\EntityRepository;
+
+class TagAliasRepository extends EntityRepository {
+}

src/DataDomain/Business/src/Repository/TagRepository.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace MyTube\Data\Business\Repository;
+
+use Doctrine\ORM\EntityRepository;
+
+class TagRepository extends EntityRepository {
+    public function findByFilter(
+        ?string $query,
+    ): array
+    {
+        $queryBuilder = $this->createQueryBuilder('t');
+
+        if ($query !== null) {
+            $query = '%'.$query.'%';
+
+            $queryBuilder
+                ->where('t.description like :query')
+                ->setParameter('query', $query);
+        }
+
+        return $queryBuilder->getQuery()->execute();
+    }
+}

src/DataDomain/Business/src/Repository/VideoRepository.php

@@ -5,24 +5,37 @@ namespace MyTube\Data\Business\Repository;
 use Doctrine\ORM\Tools\Pagination\Paginator;
 use MyTube\Data\Business\Entity\Registration;
 use Doctrine\ORM\EntityRepository;
+use MyTube\Data\Business\Entity\Tag;
+use Ramsey\Uuid\Doctrine\UuidBinaryOrderedTimeType;
 
 class VideoRepository extends EntityRepository {
     public function findByFilter(
-        string $identifier
+        ?string $query,
+        int $page,
+        int $perPage,
+        ?Tag $tag = null,
     ): Paginator
     {
-        $queryBuilder = $this->createQueryBuilder('r');
-        $queryBuilder->where(
-            $queryBuilder->expr()->orX(
-                $queryBuilder->expr()->eq('r.username', ':identifier'),
-                $queryBuilder->expr()->eq('r.mail', ':identifier')
-            )
-        )
-        ->setParameter('identifier', $identifier);
-        $query = $queryBuilder->getQuery();
+        $queryBuilder = $this->createQueryBuilder('v');
 
-        /** @var ?Registration $registration */
-        $registration = $query->execute()[0] ?? null;
-        return $registration;
+        if ($query !== null) {
+            $query = '%'.$query.'%';
+
+            $queryBuilder
+                ->where('v.title like :query')
+                ->setParameter('query', $query);
+        }
+
+        if ($tag !== null) {
+            $queryBuilder
+                ->join('v.tags', 't')
+                ->andWhere('t.id = :tagId')
+                ->setParameter('tagId', $tag->getId(), UuidBinaryOrderedTimeType::NAME);
+        }
+
+        $queryBuilder->setFirstResult($perPage * ($page - 1));
+        $queryBuilder->setMaxResults($perPage);
+
+        return new Paginator($queryBuilder->getQuery());
     }
 }

src/HandlingDomain/Tag/config/service_manager.php

@@ -0,0 +1,44 @@
+<?php
+
+use MyTube\Handling\Tag\Builder\TagAliasBuilder;
+use MyTube\Handling\Tag\Builder\TagBuilder;
+use MyTube\Handling\Tag\Handler\Command\AddAlias\AddAliasCommandBuilder;
+use MyTube\Handling\Tag\Handler\Command\AddAlias\AddAliasCommandHandler;
+use MyTube\Handling\Tag\Handler\Command\Create\CreateCommandBuilder;
+use MyTube\Handling\Tag\Handler\Command\Create\CreateCommandHandler;
+use MyTube\Handling\Tag\Handler\Query\ReadDetails\ReadDetailsQueryBuilder;
+use MyTube\Handling\Tag\Handler\Query\ReadDetails\ReadDetailsQueryHandler;
+use MyTube\Handling\Tag\Handler\Query\ReadVideoList\ReadVideoListQueryBuilder;
+use MyTube\Handling\Tag\Handler\Query\ReadVideoList\ReadVideoListQueryHandler;
+use MyTube\Handling\Tag\Rule\TagAliasExistsRule;
+use MyTube\Handling\Tag\Rule\TagExistsRule;
+use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
+use Reinfi\DependencyInjection\Factory\InjectionFactory;
+
+
+return [
+    'factories' => [
+
+        /// Rule
+        TagExistsRule::class => InjectionFactory::class,
+        TagAliasExistsRule::class => InjectionFactory::class,
+
+        /// Builder
+        TagBuilder::class => AutoWiringFactory::class,
+        TagAliasBuilder::class => AutoWiringFactory::class,
+
+        /// CQRS
+        // Add Alias
+        AddAliasCommandBuilder::class => AutoWiringFactory::class,
+        AddAliasCommandHandler::class => InjectionFactory::class,
+        // Create
+        CreateCommandBuilder::class => AutoWiringFactory::class,
+        CreateCommandHandler::class => AutoWiringFactory::class,
+        // Read Details
+        ReadDetailsQueryBuilder::class => AutoWiringFactory::class,
+        ReadDetailsQueryHandler::class => InjectionFactory::class,
+        // Read Video List
+        ReadVideoListQueryBuilder::class => AutoWiringFactory::class,
+        ReadVideoListQueryHandler::class => InjectionFactory::class,
+    ],
+];

src/HandlingDomain/Tag/src/Builder/TagAliasBuilder.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace MyTube\Handling\Tag\Builder;
+
+use MyTube\Data\Business\Entity\Tag;
+use MyTube\Data\Business\Entity\TagAlias;
+
+class TagAliasBuilder
+{
+    public function build(
+        Tag $tag,
+        string $description,
+    ): TagAlias
+    {
+        $tagAlias = new TagAlias();
+        $tagAlias->setTag($tag);
+        $tagAlias->setDescription($description);
+
+        return $tagAlias;
+    }
+}

src/HandlingDomain/Tag/src/Builder/TagBuilder.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace MyTube\Handling\Tag\Builder;
+
+use MyTube\Data\Business\Entity\Tag;
+
+class TagBuilder
+{
+    public function build(
+        string $description,
+    ): Tag
+    {
+        $tag = new Tag();
+        $tag->setDescription($description);
+
+        return $tag;
+    }
+}

src/HandlingDomain/Tag/src/ConfigProvider.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag;
+
+class ConfigProvider
+{
+    public function __invoke(): array
+    {
+        return [
+            'dependencies' => require __DIR__ . '/./../config/service_manager.php',
+        ];
+    }
+}

src/HandlingDomain/Tag/src/Exception/TagAliasAlreadyExistsException.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace MyTube\Handling\Tag\Exception;
+
+use MyTube\Infrastructure\Exception\ErrorCode;
+use MyTube\Infrastructure\Exception\ErrorDomain;
+use MyTube\Infrastructure\Exception\Exception\MyTubeException;
+use Ramsey\Uuid\UuidInterface;
+
+class TagAliasAlreadyExistsException extends MyTubeException {
+
+    private const MESSAGE = "The TagAlias '%s' already exists!";
+
+    public function __construct(string $description)
+    {
+        parent::__construct(
+            sprintf(
+                self::MESSAGE,
+                $description
+            ),
+            ErrorDomain::TagAlias,
+            ErrorCode::AlreadyExists
+        );
+    }
+}

src/HandlingDomain/Tag/src/Exception/TagAlreadyExistsException.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace MyTube\Handling\Tag\Exception;
+
+use MyTube\Infrastructure\Exception\ErrorCode;
+use MyTube\Infrastructure\Exception\ErrorDomain;
+use MyTube\Infrastructure\Exception\Exception\MyTubeException;
+use Ramsey\Uuid\UuidInterface;
+
+class TagAlreadyExistsException extends MyTubeException {
+
+    private const MESSAGE = "The Tag '%s' already exists!";
+
+    public function __construct(string $description)
+    {
+        parent::__construct(
+            sprintf(
+                self::MESSAGE,
+                $description
+            ),
+            ErrorDomain::Tag,
+            ErrorCode::AlreadyExists
+        );
+    }
+}

src/HandlingDomain/Tag/src/Exception/TagNotFoundByIdException.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace MyTube\Handling\Tag\Exception;
+
+use MyTube\Infrastructure\Exception\ErrorCode;
+use MyTube\Infrastructure\Exception\ErrorDomain;
+use MyTube\Infrastructure\Exception\Exception\MyTubeException;
+use Ramsey\Uuid\UuidInterface;
+
+class TagNotFoundByIdException extends MyTubeException {
+
+    private const MESSAGE = 'The Tag with the Id %s was not found!';
+
+    public function __construct(UuidInterface $id)
+    {
+        parent::__construct(
+            sprintf(
+                self::MESSAGE,
+                $id->toString()
+            ),
+            ErrorDomain::Tag,
+            ErrorCode::NotFound
+        );
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/AddAlias/AddAliasCommand.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\AddAlias;
+
+use Ramsey\Uuid\UuidInterface;
+
+class AddAliasCommand
+{
+    public function __construct(
+        private readonly UuidInterface $tagId,
+        private readonly string $description,
+    ) {
+    }
+
+    public function getTagId(): UuidInterface
+    {
+        return $this->tagId;
+    }
+
+    public function getDescription(): string
+    {
+        return $this->description;
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/AddAlias/AddAliasCommandBuilder.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\AddAlias;
+
+use Ramsey\Uuid\UuidInterface;
+
+class AddAliasCommandBuilder
+{
+    public function build(
+        UuidInterface $tagId,
+        string $description,
+    ): AddAliasCommand {
+        return new AddAliasCommand(
+            $tagId,
+            $description
+        );
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/AddAlias/AddAliasCommandHandler.php

@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\AddAlias;
+
+use MyTube\Data\Business\Manager\MyTubeEntityManager;
+use MyTube\Data\Business\Repository\TagRepository;
+use MyTube\Handling\Tag\Builder\TagAliasBuilder;
+use MyTube\Handling\Tag\Exception\TagAliasAlreadyExistsException;
+use MyTube\Handling\Tag\Exception\TagNotFoundByIdException;
+use MyTube\Handling\Tag\Rule\TagAliasExistsRule;
+use Reinfi\DependencyInjection\Annotation\Inject;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class AddAliasCommandHandler
+{
+    /**
+     * @Inject("MyTube\Handling\Tag\Rule\TagAliasExistsRule")
+     * @InjectDoctrineRepository(
+     *      entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *      entity="MyTube\Data\Business\Entity\Tag"
+     * )
+     * @Inject("MyTube\Handling\Tag\Builder\TagAliasBuilder")
+     * @Inject("MyTube\Data\Business\Manager\MyTubeEntityManager")
+     */
+    public function __construct(
+        private readonly TagAliasExistsRule $existsRule,
+        private readonly TagRepository $tagRepository,
+        private readonly TagAliasBuilder $aliasBuilder,
+        private readonly MyTubeEntityManager $entityManager,
+    ) {    
+    }
+
+    /**
+     * @throws TagAliasAlreadyExistsException
+     * @throws TagNotFoundByIdException
+     */
+    public function execute(AddAliasCommand $addAliasCommand): AddAliasCommandResult
+    {
+        $tagId = $addAliasCommand->getTagId();
+        $description = $addAliasCommand->getDescription();
+
+        if ($this->existsRule->appliesTo($description)) {
+            throw new TagAliasAlreadyExistsException($description);
+        }
+
+        $tag = $this->tagRepository->findOneBy(['id' => $tagId]);
+        if ($tag === null) {
+            throw new TagNotFoundByIdException($tagId);
+        }
+
+        $tagAlias = $this->aliasBuilder->build(
+            $tag,
+            $description
+        );
+
+        $this->entityManager->persist($tagAlias);
+        $this->entityManager->flush();
+
+        return new AddAliasCommandResult($tagAlias);
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/AddAlias/AddAliasCommandResult.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\AddAlias;
+
+use MyTube\Data\Business\Entity\TagAlias;
+
+class AddAliasCommandResult
+{
+    public function __construct(
+        private readonly TagAlias $alias,
+    ) {
+    }
+
+    public function getAlias(): TagAlias
+    {
+        return $this->alias;
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/Create/CreateCommand.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\Create;
+
+class CreateCommand
+{
+    public function __construct(
+        private readonly string $description
+    ) {    
+    }
+
+    public function getDescription(): string
+    {
+        return $this->description;
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/Create/CreateCommandBuilder.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\Create;
+
+class CreateCommandBuilder
+{
+    public function build(
+        string $description
+    ): CreateCommand {
+        return new CreateCommand(
+            $description
+        );
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/Create/CreateCommandHandler.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\Create;
+
+use MyTube\Data\Business\Manager\MyTubeEntityManager;
+use MyTube\Handling\Tag\Builder\TagBuilder;
+use MyTube\Handling\Tag\Exception\TagAlreadyExistsException;
+use MyTube\Handling\Tag\Rule\TagExistsRule;
+
+class CreateCommandHandler
+{
+    public function __construct(
+        private readonly TagExistsRule $existsRule,
+        private readonly TagBuilder $tagBuilder,
+        private readonly MyTubeEntityManager $entityManager
+    ) {    
+    }
+
+    /**
+     * @throws TagAlreadyExistsException
+     */
+    public function execute(CreateCommand $createCommand): CreateCommandResult
+    {
+        $description = $createCommand->getDescription();
+
+        if ($this->existsRule->appliesTo($description)) {
+            throw new TagAlreadyExistsException($description);
+        }
+
+        $tag = $this->tagBuilder->build($description);
+
+        $this->entityManager->persist($tag);
+        $this->entityManager->flush();
+
+        return new CreateCommandResult($tag);
+    }
+}

src/HandlingDomain/Tag/src/Handler/Command/Create/CreateCommandResult.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Command\Create;
+
+use MyTube\Data\Business\Entity\Tag;
+
+class CreateCommandResult
+{
+    public function __construct(
+        private readonly Tag $tag,
+    ) {    
+    }
+
+    public function getTag(): Tag
+    {
+        return $this->tag;
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadDetails/ReadDetailsQuery.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadDetails;
+
+use Ramsey\Uuid\UuidInterface;
+
+class ReadDetailsQuery
+{
+    public function __construct(
+        private readonly UuidInterface $tagId,
+    ) {
+    }
+
+    public function getTagId(): UuidInterface
+    {
+        return $this->tagId;
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadDetails/ReadDetailsQueryBuilder.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadDetails;
+
+use Ramsey\Uuid\UuidInterface;
+
+class ReadDetailsQueryBuilder
+{
+    public function build(
+        UuidInterface $tagId,
+    ): ReadDetailsQuery {
+        return new ReadDetailsQuery(
+            $tagId
+        );
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadDetails/ReadDetailsQueryHandler.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadDetails;
+
+use MyTube\Data\Business\Repository\TagRepository;
+use MyTube\Handling\Tag\Exception\TagNotFoundByIdException;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class ReadDetailsQueryHandler
+{
+    /**
+     * @InjectDoctrineRepository(
+     *      entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *      entity="MyTube\Data\Business\Entity\Tag"
+     * )
+     */
+    public function __construct(
+        private readonly TagRepository $tagRepository,
+    ) {    
+    }
+
+    /**
+     * @throws TagNotFoundByIdException
+     */
+    public function execute(ReadDetailsQuery $readDetailsQuery): ReadDetailsQueryResult
+    {
+        $tagId = $readDetailsQuery->getTagId();
+
+        $tag = $this->tagRepository->findOneBy(['id' => $tagId]);
+
+        if ($tag === null) {
+            throw new TagNotFoundByIdException($tagId);
+        }
+
+        return new ReadDetailsQueryResult($tag);
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadDetails/ReadDetailsQueryResult.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadDetails;
+
+use MyTube\Data\Business\Entity\Tag;
+
+class ReadDetailsQueryResult
+{
+    public function __construct(
+        private readonly Tag $tag,
+    ) {
+    }
+
+    public function getTag(): Tag
+    {
+        return $this->tag;
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadVideoList/ReadVideoListQuery.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadVideoList;
+
+use Ramsey\Uuid\UuidInterface;
+
+class ReadVideoListQuery
+{
+    public function __construct(
+        private readonly UuidInterface $tagId,
+        private readonly ?string $query,
+        private readonly int $page,
+        private readonly int $perPage,
+    ) {
+    }
+
+    public function getTagId(): UuidInterface
+    {
+        return $this->tagId;
+    }
+
+    public function getQuery(): ?string
+    {
+        return $this->query;
+    }
+
+    public function getPage(): int
+    {
+        return $this->page;
+    }
+
+    public function getPerPage(): int
+    {
+        return $this->perPage;
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadVideoList/ReadVideoListQueryBuilder.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadVideoList;
+
+use Ramsey\Uuid\UuidInterface;
+
+class ReadVideoListQueryBuilder
+{
+    public function build(
+        UuidInterface $tagId,
+        ?string $query,
+        int $page,
+        int $perPage,
+    ): ReadVideoListQuery {
+        return new ReadVideoListQuery(
+            $tagId,
+            $query,
+            $page,
+            $perPage,
+        );
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadVideoList/ReadVideoListQueryHandler.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadVideoList;
+
+use MyTube\Data\Business\Repository\TagRepository;
+use MyTube\Data\Business\Repository\VideoRepository;
+use MyTube\Handling\Tag\Exception\TagNotFoundByIdException;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class ReadVideoListQueryHandler
+{
+    /**
+     * @InjectDoctrineRepository(
+     *      entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *      entity="MyTube\Data\Business\Entity\Tag"
+     *  )
+     * @InjectDoctrineRepository(
+     *     entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *     entity="MyTube\Data\Business\Entity\Video"
+     * )
+     */
+    public function __construct(
+        private readonly TagRepository $tagRepository,
+        private readonly VideoRepository $videoRepository,
+    ) {    
+    }
+
+    /**
+     * @throws TagNotFoundByIdException
+     */
+    public function execute(ReadVideoListQuery $readVideoListQuery): ReadVideoListQueryResult
+    {
+        $tagId = $readVideoListQuery->getTagId();
+
+        $tag = $this->tagRepository->findOneBy(['id' => $tagId]);
+        if ($tag === null) {
+            throw new TagNotFoundByIdException($tagId);
+        }
+
+        return new ReadVideoListQueryResult(
+            $this->videoRepository->findByFilter(
+                query: $readVideoListQuery->getQuery(),
+                page: $readVideoListQuery->getPage(),
+                perPage: $readVideoListQuery->getPerPage(),
+                tag: $tag
+            )
+        );
+    }
+}

src/HandlingDomain/Tag/src/Handler/Query/ReadVideoList/ReadVideoListQueryResult.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Tag\Handler\Query\ReadVideoList;
+
+use Doctrine\ORM\Tools\Pagination\Paginator;
+
+class ReadVideoListQueryResult
+{
+    public function __construct(
+        private readonly Paginator $paginator
+    ) {
+    }
+
+    public function getPaginator(): Paginator
+    {
+        return $this->paginator;
+    }
+}

src/HandlingDomain/Tag/src/Rule/TagAliasExistsRule.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace MyTube\Handling\Tag\Rule;
+
+use MyTube\Data\Business\Repository\TagAliasRepository;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class TagAliasExistsRule
+{
+    /**
+     * @InjectDoctrineRepository(
+     *      entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *      entity="MyTube\Data\Business\Entity\TagAlias"
+     * )
+     */
+    public function __construct(
+        private readonly TagAliasRepository $tagAliasRepository,
+    ) {
+    }
+
+    public function appliesTo(
+        string $description,
+    ): bool
+    {
+        return $this->tagAliasRepository->findOneBy(['description' => $description]) !== null;
+    }
+}

src/HandlingDomain/Tag/src/Rule/TagExistsRule.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace MyTube\Handling\Tag\Rule;
+
+use MyTube\Data\Business\Entity\Tag;
+use MyTube\Data\Business\Repository\TagRepository;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class TagExistsRule
+{
+    /**
+     * @InjectDoctrineRepository(
+     *      entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *      entity="MyTube\Data\Business\Entity\Tag"
+     * )
+     */
+    public function __construct(
+        private readonly TagRepository $tagRepository,
+    ) {
+    }
+
+    public function appliesTo(
+        string $description,
+    ): bool
+    {
+        return $this->tagRepository->findOneBy(['description' => $description]) !== null;
+    }
+}

src/HandlingDomain/TagList/config/service_manager.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use MyTube\Handling\TagList\Handler\Query\ReadList\ReadListQueryHandler;
+use MyTube\Handling\TagList\Handler\Query\ReadList\ReadListQueryBuilder;
+use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
+use Reinfi\DependencyInjection\Factory\InjectionFactory;
+
+return [
+    'factories' => [
+        /// CQRS
+        // ReadList
+        ReadListQueryBuilder::class => AutoWiringFactory::class,
+        ReadListQueryHandler::class => InjectionFactory::class,
+    ],
+];

src/HandlingDomain/TagList/src/ConfigProvider.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\TagList;
+
+class ConfigProvider
+{
+    public function __invoke(): array
+    {
+        return [
+            'dependencies' => require  __DIR__ . './../config/service_manager.php',
+        ];
+    }
+}

src/HandlingDomain/TagList/src/Handler/Query/ReadList/ReadListQuery.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\TagList\Handler\Query\ReadList;
+
+class ReadListQuery
+{
+    public function __construct(
+        private readonly ?string $query,
+    ) {    
+    }
+
+    public function getQuery(): ?string
+    {
+        return $this->query;
+    }
+}

src/HandlingDomain/TagList/src/Handler/Query/ReadList/ReadListQueryBuilder.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\TagList\Handler\Query\ReadList;
+
+class ReadListQueryBuilder
+{
+    public function build(
+        ?string $query,
+    ): ReadListQuery {
+        return new ReadListQuery(
+            $query,
+        );
+    }
+}

src/HandlingDomain/TagList/src/Handler/Query/ReadList/ReadListQueryHandler.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\TagList\Handler\Query\ReadList;
+
+use MyTube\Data\Business\Repository\TagRepository;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class ReadListQueryHandler
+{
+    /**
+     * @InjectDoctrineRepository(
+     *     entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *     entity="MyTube\Data\Business\Entity\Tag"
+     * )
+     */
+    public function __construct(
+        private readonly TagRepository $tagRepository
+    ) {
+    }
+
+    public function execute(ReadListQuery $readListQuery): ReadListQueryResult
+    {
+        return new ReadListQueryResult(
+            $this->tagRepository->findByFilter(
+                $readListQuery->getQuery(),
+            )
+        );
+    }
+}

src/HandlingDomain/TagList/src/Handler/Query/ReadList/ReadListQueryResult.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\TagList\Handler\Query\ReadList;
+
+class ReadListQueryResult
+{
+    public function __construct(
+        private readonly array $items
+    ) {    
+    }
+
+    public function getItems(): array
+    {
+        return $this->items;
+    }
+}

src/HandlingDomain/Video/config/service_manager.php

@@ -10,6 +10,14 @@ use MyTube\Handling\Video\Handler\Query\Stream\StreamQueryBuilder;
 use MyTube\Handling\Video\Handler\Query\Stream\StreamQueryHandler;
 use MyTube\Handling\Video\Handler\Query\Thumbnail\ThumbnailQueryBuilder;
 use MyTube\Handling\Video\Handler\Query\Thumbnail\ThumbnailQueryHandler;
+use MyTube\Handling\Video\Analyzer\VideoTitleAnalyzer;
+use MyTube\Handling\Video\Pipeline\Upload\Step\AnalyzeTitleStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\BuildVideoStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\CheckVideoStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\SaveEntityStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\UploadFileStep;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPipeline;
+use MyTube\Handling\Video\Rule\VideoExistsRule;
 use MyTube\Handling\Video\Uploader\VideoUploader;
 use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
 use Reinfi\DependencyInjection\Factory\InjectionFactory;
@@ -17,6 +25,9 @@ use Reinfi\DependencyInjection\Factory\InjectionFactory;
 
 return [
     'factories' => [
+        /// Analyzer
+        VideoTitleAnalyzer::class => InjectionFactory::class,
+
         /// Uploader
         VideoUploader::class => AutoWiringFactory::class,
 
@@ -24,6 +35,9 @@ return [
         VideoBuilder::class => AutoWiringFactory::class,
         VideoImageBuilder::class => AutoWiringFactory::class,
 
+        /// Rule
+        VideoExistsRule::class => InjectionFactory::class,
+
         /// CQRS
         // Stream Query
         StreamQueryHandler::class => InjectionFactory::class,
@@ -37,5 +51,14 @@ return [
         // Read Details
         ReadDetailsQueryHandler::class => InjectionFactory::class,
         ReadDetailsQueryBuilder::class => AutoWiringFactory::class,
+
+        /// Pipeline
+        // Upload
+        UploadPipeline::class => AutoWiringFactory::class,
+        CheckVideoStep::class => AutoWiringFactory::class,
+        BuildVideoStep::class => AutoWiringFactory::class,
+        AnalyzeTitleStep::class => AutoWiringFactory::class,
+        UploadFileStep::class => AutoWiringFactory::class,
+        SaveEntityStep::class => AutoWiringFactory::class,
     ],
 ];

src/HandlingDomain/Video/src/Analyzer/VideoTitleAnalyzer.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace MyTube\Handling\Video\Analyzer;
+
+use Exception;
+use MyTube\Data\Business\Entity\Tag;
+use MyTube\Data\Business\Entity\TagAlias;
+use MyTube\Data\Business\Entity\Video;
+use MyTube\Data\Business\Repository\TagRepository;
+use Psr\Http\Message\UploadedFileInterface;
+use Ramsey\Uuid\UuidInterface;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class VideoTitleAnalyzer
+{
+    /**
+     * @InjectDoctrineRepository(
+     *     entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *     entity="MyTube\Data\Business\Entity\Tag"
+     * )
+     */
+    public function __construct(
+        private readonly TagRepository $tagRepository,
+    ) {
+    }
+
+    public function analyze(
+        Video $video
+    ): array {
+        $title = $this->normalizeString($video->getTitle());
+
+        $tags = $this->tagRepository->findAll();
+        $matches = [];
+
+        /** @var Tag $tag */
+        foreach ($tags as $tag) {
+            if (str_contains($title, $this->normalizeString($tag->getDescription()))) {
+                $matches[] = $tag;
+                continue;
+            }
+
+            /** @var TagAlias $alias */
+            foreach ($tag->getAliases() as $alias) {
+                if (str_contains($title, $this->normalizeString($alias->getDescription()))) {
+                    $matches[] = $tag;
+                    break;
+                }
+            }
+        }
+
+        /** @var Tag $match */
+        foreach ($matches as $match) {
+            $video->addTag($match);
+        }
+
+        return $matches;
+    }
+
+    private function normalizeString(string $string): string {
+        return preg_replace(
+            '/[^a-zA-Z0-9]+/',
+            '',
+            strtolower($string)
+        );
+    }
+}

src/HandlingDomain/Video/src/Builder/VideoImageBuilder.php

@@ -2,24 +2,27 @@
 
 namespace MyTube\Handling\Video\Builder;
 
-use MyTube\Data\Business\Entity\Video;
+use Ramsey\Uuid\UuidInterface;
 
 class VideoImageBuilder
 {
     private const FILE_NAME = 'thumbnail.png';
 
     public function build(
-        Video $video,
+        UuidInterface $directoryId,
         string $timestamp = '00:00:10'
     ): string|null
     {
-        $videoId = $video->getId()->toString();
-
-        $targetPath = sprintf(
-            '%s/%s/%s/%s',
+        $directoryPath = sprintf(
+            '%s/%s/%s',
             APP_ROOT,
             'var/filestore',
-            $videoId,
+            $directoryId->toString()
+        );
+
+        $targetPath = sprintf(
+            '%s/%s',
+            $directoryPath,
             self::FILE_NAME
         );
 
@@ -27,11 +30,14 @@ class VideoImageBuilder
             return null;
         }
 
-        $command =  "cd /var/www/html/var/filestore/" . $videoId . "/" .
-            " && " .
-            "ffmpeg -i video.mp4 -ss " . $timestamp . " -vframes 1 " . self::FILE_NAME;
+        $command = sprintf(
+            "cd %s && ffmpeg -i video.mp4 -ss %s -vframes 1 %s",
+            $directoryPath,
+            $timestamp,
+            self::FILE_NAME
+        );
 
-        $output = shell_exec($command);
+        shell_exec($command);
 
         return $targetPath;
     }

src/HandlingDomain/Video/src/Exception/VideoAlreadyExistsException.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace MyTube\Handling\Video\Exception;
+
+use MyTube\Infrastructure\Exception\ErrorCode;
+use MyTube\Infrastructure\Exception\ErrorDomain;
+use MyTube\Infrastructure\Exception\Exception\MyTubeException;
+use Psr\Http\Message\UploadedFileInterface;
+
+class VideoAlreadyExistsException extends MyTubeException {
+
+    private const MESSAGE = 'A Video with the Title %s does already exist!';
+
+    public function __construct(UploadedFileInterface $uploadedFile)
+    {
+        parent::__construct(
+            sprintf(
+                self::MESSAGE,
+                $uploadedFile->getClientFilename()
+            ),
+            ErrorDomain::Video,
+            ErrorCode::AlreadyExists
+        );
+    }
+}

src/HandlingDomain/Video/src/Exception/VideoNotFoundByIdException.php

@@ -9,7 +9,7 @@ use Ramsey\Uuid\UuidInterface;
 
 class VideoNotFoundByIdException extends MyTubeException {
 
-    private const MESSAGE = 'The user with the Id %s was not found!';
+    private const MESSAGE = 'The Video with the Id %s was not found!';
 
     public function __construct(UuidInterface $id)
     {

src/HandlingDomain/Video/src/Handler/Command/Upload/UploadCommandHandler.php

@@ -8,38 +8,26 @@ use MyTube\Data\Business\Entity\Video;
 use MyTube\Data\Business\Manager\MyTubeEntityManager;
 use MyTube\Handling\Video\Builder\VideoBuilder;
 use MyTube\Handling\Video\Builder\VideoImageBuilder;
-use MyTube\Handling\Video\Uploader\VideoUploader;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPayload;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPipeline;
+use MyTube\Handling\Video\Uploader\VideoTitleAnalyzer;
 use Psr\Http\Message\UploadedFileInterface;
 use Exception;
 
 class UploadCommandHandler
 {
     public function __construct(
-        private readonly VideoBuilder $videoBuilder,
-        private readonly MyTubeEntityManager $entityManager,
-        private readonly VideoUploader $uploader,
+        private readonly UploadPipeline $pipeline,
     ) {    
     }
 
-    /**
-     * @throws Exception
-     */
     public function execute(UploadCommand $uploadCommand): Video
     {
-        $uploadedFile = $uploadCommand->getUploadedFile();
+        $payload = new UploadPayload();
+        $payload->setUploadedFile($uploadCommand->getUploadedFile());
 
-        $video = $this->videoBuilder->build(
-            $uploadedFile->getClientFilename()
-        );
+        $this->pipeline->handle($payload);
 
-        $this->uploader->upload(
-            $uploadedFile,
-            $video
-        );
-
-        $this->entityManager->persist($video);
-        $this->entityManager->flush();
-
-        return $video;
+        return $payload->getVideo();
     }
 }

src/HandlingDomain/Video/src/Handler/Query/ReadDetails/ReadDetailsQueryHandler.php

@@ -18,9 +18,11 @@ class ReadDetailsQueryHandler
      *     entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
      *     entity="MyTube\Data\Business\Entity\Video"
      * )
+     * @Inject("MyTube\Handling\Video\Builder\VideoImageBuilder")
      */
     public function __construct(
         private readonly VideoRepository $videoRepository,
+        private readonly VideoImageBuilder $videoImageBuilder,
     ) {
     }
 
@@ -38,6 +40,8 @@ class ReadDetailsQueryHandler
             throw new VideoNotFoundByIdException($videoId);
         }
 
+        $this->videoImageBuilder->build($video->getId());
+
         return new ReadDetailsQueryResult($video);
     }
 }

src/HandlingDomain/Video/src/Pipeline/Upload/Step/AnalyzeTitleStep.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Video\Pipeline\Upload\Step;
+
+use MyTube\Handling\Video\Analyzer\VideoTitleAnalyzer;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPayload;
+
+use teewurst\Pipeline\PipelineInterface;
+use teewurst\Pipeline\TaskInterface;
+
+class AnalyzeTitleStep implements TaskInterface
+{
+    public function __construct(
+        private readonly VideoTitleAnalyzer $analyzer,
+    ) {
+    }
+    
+    public function __invoke(
+        $payload,
+        PipelineInterface $pipeline
+    ): void
+    {
+        /** @var UploadPayload $uploadPayload */
+        $uploadPayload = $payload;
+        $video = $uploadPayload->getVideo();
+
+        $this->analyzer->analyze($video);
+
+        $pipeline->next()($payload, $pipeline);
+    }
+}

src/HandlingDomain/Video/src/Pipeline/Upload/Step/BuildVideoStep.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Video\Pipeline\Upload\Step;
+
+use MyTube\Handling\Video\Builder\VideoBuilder;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPayload;
+
+use teewurst\Pipeline\PipelineInterface;
+use teewurst\Pipeline\TaskInterface;
+
+class BuildVideoStep implements TaskInterface
+{
+    public function __construct(
+        private readonly VideoBuilder $videoBuilder,
+    ) {
+    }
+    
+    public function __invoke(
+        $payload,
+        PipelineInterface $pipeline
+    ): void
+    {
+        /** @var UploadPayload $uploadPayload */
+        $uploadPayload = $payload;
+        $uploadedFile = $uploadPayload->getUploadedFile();
+
+        $video = $this->videoBuilder->build(
+            $uploadedFile->getClientFilename()
+        );
+
+        $uploadPayload->setVideo($video);
+        $pipeline->next()($payload, $pipeline);
+    }
+}

src/HandlingDomain/Video/src/Pipeline/Upload/Step/CheckVideoStep.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Video\Pipeline\Upload\Step;
+
+use MyTube\Handling\Video\Builder\VideoBuilder;
+use MyTube\Handling\Video\Exception\VideoAlreadyExistsException;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPayload;
+
+use MyTube\Handling\Video\Rule\VideoExistsRule;
+use teewurst\Pipeline\PipelineInterface;
+use teewurst\Pipeline\TaskInterface;
+
+class CheckVideoStep implements TaskInterface
+{
+    public function __construct(
+        private readonly VideoExistsRule $existsRule,
+    ) {
+    }
+
+    /**
+     * @throws VideoAlreadyExistsException
+     */
+    public function __invoke(
+        $payload,
+        PipelineInterface $pipeline
+    ): void
+    {
+        /** @var UploadPayload $uploadPayload */
+        $uploadPayload = $payload;
+        $uploadedFile = $uploadPayload->getUploadedFile();
+
+        if ($this->existsRule->appliesTo($uploadedFile)) {
+            throw new VideoAlreadyExistsException($uploadedFile);
+        }
+
+        $pipeline->next()($payload, $pipeline);
+    }
+}

src/HandlingDomain/Video/src/Pipeline/Upload/Step/SaveEntityStep.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Video\Pipeline\Upload\Step;
+
+use MyTube\Data\Business\Manager\MyTubeEntityManager;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPayload;
+use teewurst\Pipeline\PipelineInterface;
+use teewurst\Pipeline\TaskInterface;
+
+class SaveEntityStep implements TaskInterface
+{
+    public function __construct(
+        private readonly MyTubeEntityManager $entityManager,
+    ) {
+    }
+    
+    public function __invoke(
+        $payload,
+        PipelineInterface $pipeline
+    ): void
+    {
+        /** @var UploadPayload $uploadPayload */
+        $uploadPayload = $payload;
+        $video = $uploadPayload->getVideo();
+
+        $this->entityManager->persist($video);
+        $this->entityManager->flush();
+    }
+}

src/HandlingDomain/Video/src/Pipeline/Upload/Step/UploadFileStep.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Video\Pipeline\Upload\Step;
+
+use MyTube\Handling\Video\Builder\VideoImageBuilder;
+use MyTube\Handling\Video\Pipeline\Upload\UploadPayload;
+
+use MyTube\Handling\Video\Uploader\VideoUploader;
+use teewurst\Pipeline\PipelineInterface;
+use teewurst\Pipeline\TaskInterface;
+
+class UploadFileStep implements TaskInterface
+{
+    public function __construct(
+        private readonly VideoUploader $uploader,
+        private readonly VideoImageBuilder  $imageBuilder,
+    ) {
+    }
+
+    /**
+     * @throws \Exception
+     */
+    public function __invoke(
+        $payload,
+        PipelineInterface $pipeline
+    ): void
+    {
+        /** @var UploadPayload $uploadPayload */
+        $uploadPayload = $payload;
+        $video = $uploadPayload->getVideo();
+        $uploadedFile = $uploadPayload->getUploadedFile();
+
+        $directoryPath = $this->uploader->upload($uploadedFile, $video->getId());
+        $video->setDirectoryPath($directoryPath);
+
+        $this->imageBuilder->build($video->getId());
+
+        $pipeline->next()($payload, $pipeline);
+    }
+}

src/HandlingDomain/Video/src/Pipeline/Upload/UploadPayload.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Video\Pipeline\Upload;
+
+use MyTube\Data\Business\Entity\Video;
+use Psr\Http\Message\UploadedFileInterface;
+
+class UploadPayload
+{
+    private UploadedFileInterface $uploadedFile;
+    private Video $video;
+
+    public function getUploadedFile(): UploadedFileInterface
+    {
+        return $this->uploadedFile;
+    }
+    public function setUploadedFile(UploadedFileInterface $uploadedFile): void
+    {
+        $this->uploadedFile = $uploadedFile;
+    }
+
+    public function getVideo(): Video
+    {
+        return $this->video;
+    }
+    public function setVideo(Video $video): void
+    {
+        $this->video = $video;
+    }
+}

src/HandlingDomain/Video/src/Pipeline/Upload/UploadPipeline.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\Video\Pipeline\Upload;
+
+use MyTube\Handling\Video\Pipeline\Upload\Step\BuildVideoStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\AnalyzeTitleStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\CheckVideoStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\UploadFileStep;
+use MyTube\Handling\Video\Pipeline\Upload\Step\SaveEntityStep;
+use teewurst\Pipeline\Pipeline;
+
+class UploadPipeline extends Pipeline
+{
+    public function __construct(
+        private readonly CheckVideoStep $checkVideoStep,
+        private readonly BuildVideoStep $buildVideoStep,
+        private readonly AnalyzeTitleStep $analyzeTitleStep,
+        private readonly UploadFileStep $uploadFileStep,
+        private readonly SaveEntityStep $saveEntityStep,    
+    ) {
+        parent::__construct([
+            $this->checkVideoStep,
+            $this->buildVideoStep,
+            $this->analyzeTitleStep,
+            $this->uploadFileStep,
+            $this->saveEntityStep,
+        ]);
+    }
+
+    public function reset(): void
+    {
+        $this->tasks = [
+            $this->checkVideoStep,
+            $this->buildVideoStep,
+            $this->analyzeTitleStep,
+            $this->uploadFileStep,
+            $this->saveEntityStep,
+        ];
+    }
+}

src/HandlingDomain/Video/src/Rule/VideoExistsRule.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace MyTube\Handling\Video\Rule;
+
+use MyTube\Data\Business\Entity\Video;
+use MyTube\Data\Business\Repository\VideoRepository;
+use Psr\Http\Message\UploadedFileInterface;
+use Reinfi\DependencyInjection\Annotation\InjectDoctrineRepository;
+
+class VideoExistsRule
+{
+    /**
+     * @InjectDoctrineRepository(
+     *      entityManager="MyTube\Data\Business\Manager\MyTubeEntityManager",
+     *      entity="MyTube\Data\Business\Entity\Video"
+     * )
+     */
+    public function __construct(
+        private readonly VideoRepository $tagRepository,
+    ) {
+    }
+
+    public function appliesTo(
+        UploadedFileInterface $uploadedFile,
+    ): bool
+    {
+        return $this->tagRepository->findOneBy(['title' => $uploadedFile->getClientFilename()]) !== null;
+    }
+}

src/HandlingDomain/Video/src/Uploader/VideoUploader.php

@@ -4,37 +4,31 @@ namespace MyTube\Handling\Video\Uploader;
 
 use Exception;
 use MyTube\Data\Business\Entity\Video;
-use MyTube\Handling\Video\Builder\VideoImageBuilder;
 use Psr\Http\Message\UploadedFileInterface;
+use Ramsey\Uuid\UuidInterface;
 
 class VideoUploader
 {
-    public function __construct(
-        private readonly VideoImageBuilder $imageBuilder,
-    ) {
-    }
-
     public function upload(
         UploadedFileInterface $file,
-        Video $video,
-    ): void {
-        $targetPath = sprintf(
+        UuidInterface $directoryId,
+    ): string {
+        $directoryPath = sprintf(
             '%s/%s/%s/',
             APP_ROOT,
             'var/filestore',
-            $video->getId()->toString(),
+            $directoryId->toString(),
         );
 
-        if (file_exists($targetPath)) {
+        if (file_exists($directoryPath)) {
             throw new Exception('File already exists');
         }
 
-        mkdir($targetPath, 0777, true);
-        $video->setDirectoryPath($targetPath);
+        mkdir($directoryPath, 0777, true);
 
-        $targetPath = $targetPath . 'video.' . substr(strrchr($file->getClientFilename(),'.'),1);
+        $targetPath = $directoryPath . 'video.' . substr(strrchr($file->getClientFilename(),'.'),1);
         $file->moveTo($targetPath);
 
-        $this->imageBuilder->build($video);
+        return $directoryPath;
     }
 }

src/HandlingDomain/VideoList/config/service_manager.php

@@ -1,10 +1,7 @@
 <?php
 
-use MyTube\Handling\Video\Builder\VideoBuilder;
-use MyTube\Handling\Video\Handler\Command\Upload\UploadCommandBuilder;
-use MyTube\Handling\Video\Handler\Command\Upload\UploadCommandHandler;
-use MyTube\Handling\Video\Handler\Query\Stream\StreamQueryBuilder;
-use MyTube\Handling\Video\Handler\Query\Stream\StreamQueryHandler;
+use MyTube\Handling\VideoList\Handler\Command\Upload\UploadCommandBuilder;
+use MyTube\Handling\VideoList\Handler\Command\Upload\UploadCommandHandler;
 use MyTube\Handling\VideoList\Handler\Query\ReadList\ReadListQueryBuilder;
 use MyTube\Handling\VideoList\Handler\Query\ReadList\ReadListQueryHandler;
 use Reinfi\DependencyInjection\Factory\AutoWiringFactory;
@@ -15,7 +12,10 @@ return [
     'factories' => [
         /// CQRS
         // Read List
-        ReadListQueryHandler::class => InjectionFactory::class,
         ReadListQueryBuilder::class => AutoWiringFactory::class,
+        ReadListQueryHandler::class => InjectionFactory::class,
+        // Upload
+        UploadCommandBuilder::class => AutoWiringFactory::class,
+        UploadCommandHandler::class => AutoWiringFactory::class,
     ],
 ];

src/HandlingDomain/VideoList/src/Handler/Command/Upload/UploadCommand.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\VideoList\Handler\Command\Upload;
+
+class UploadCommand
+{
+    public function __construct(
+        private array $uploadedFiles
+    ) {
+    }
+
+    public function getUploadedFiles(): array
+    {
+        return $this->uploadedFiles;
+    }
+}

src/HandlingDomain/VideoList/src/Handler/Command/Upload/UploadCommandBuilder.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTube\Handling\VideoList\Handler\Command\Upload;
+
+class UploadCommandBuilder
+{
+    public function build(
+        array $uploadedFiles
+    ): UploadCommand {
+        return new UploadCommand(
+            $uploadedFiles
+        );
+    }
+}