From 66ba2473af2e327c8c4e21db953a5001b3e483b9 Mon Sep 17 00:00:00 2001
From: Miguel Nogueira <me@nogueira.codes>
Date: Mon, 14 Apr 2025 00:05:48 +0100
Subject: [PATCH] feat: add getTask for fetching single task

---
 index.php                          |  7 +++++++
 src/Controllers/TaskController.php | 23 ++++++++++++++++++++++-
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/index.php b/index.php
index 6651683..4a9d6fd 100644
--- a/index.php
+++ b/index.php
@@ -4,6 +4,7 @@ use Controllers\TaskController;
 use DI\Bridge\Slim\Bridge;
 use DI\Container;
 use Controllers\HomeFrontController;
+use Slim\Handlers\Strategies\RequestResponseArgs;
 
 require_once __DIR__ . '/vendor/autoload.php';
 
@@ -11,9 +12,15 @@ $container = new Container();
 $app = Bridge::create($container);
 $app->addBodyParsingMiddleware();
 
+// this strategy is preferable because we aren't using a lot of named placeholders
+$routeCollector = $app->getRouteCollector();
+$routeCollector->setDefaultInvocationStrategy(new RequestResponseArgs());
+
+
 $app->get('/', [HomeFrontController::class, 'home']);
 
 $app->get('/tasks', [TaskController::class, 'getTasks']);
+$app->get('/tasks/{id}', [TaskController::class, 'getTask']);
 $app->post('/tasks', [TaskController::class, 'addTask']);
 
 
diff --git a/src/Controllers/TaskController.php b/src/Controllers/TaskController.php
index 98a66d6..ec7de62 100644
--- a/src/Controllers/TaskController.php
+++ b/src/Controllers/TaskController.php
@@ -5,6 +5,7 @@ namespace Controllers;
 use Carbon\Carbon;
 use Carbon\Exceptions\InvalidFormatException;
 use Exceptions\InvalidTaskDateException;
+use Exceptions\TaskNotFoundException;
 use Models\Task;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
@@ -69,7 +70,7 @@ class TaskController
             $end = Carbon::parse($params['tasks']['end']);
 
             if ($start->gt($end) || $end->lt($start)) {
-                throw new \DomainException('Invalid task date. Start date must not be after end date.');
+                throw new InvalidTaskDateException('Invalid task date. Start date must not be after end date.');
             }
 
         } catch (InvalidFormatException | \DomainException $exception)
@@ -134,4 +135,24 @@ class TaskController
 
         return $response;
     }
+
+    public function getTask(ServerRequestInterface $request, ResponseInterface $response, string $id): ResponseInterface
+    {
+        try {
+            $payload['task'] = $this->repository->readById((int)$id)->persist();
+
+            $this->builder->setPayload($payload)->setOptionalMessage("Task retrieved.");
+            $response->getBody()->write($this->builder->build());
+
+            return $response;
+
+        } catch (TaskNotFoundException $e) {
+
+            $this->builder->setError()->setErrorMessage($e->getMessage())->setErrorCode(404);
+            $errorResponse = $response->withStatus(404, $e->getMessage());
+
+            $response->getBody()->write($this->builder->build());
+            return $errorResponse;
+        }
+    }
 }
\ No newline at end of file