Add support for arrays of objects in OpenAPI response generation (#1021)

Fixes #1007

Co-authored-by: Shalvah <shalvah@users.noreply.github.com>

Author: s-shiryaev

src/Writing/OpenApiSpecGenerators/BaseGenerator.php

@@ -365,6 +365,26 @@ protected function generateResponseContentSpec(?string $responseContent, OutputE
                 }
 
                 // Non-empty array
+                if (is_object($decoded[0])) {
+                    // If the first item is an object, we assume it's an array of objects'
+                    $properties = collect($decoded[0])->mapWithKeys(function ($value, $key) use ($endpoint) {
+                        return [$key => $this->generateSchemaForResponseValue($value, $endpoint, $key)];
+                    })->toArray();
+
+                    return [
+                        'application/json' => [
+                            'schema' => [
+                                'type' => 'array',
+                                'items' => [
+                                    'type' => $this->convertScribeOrPHPTypeToOpenAPIType(gettype($decoded[0])),
+                                    'properties' => $this->objectIfEmpty($properties),
+                                ],
+                                'example' => $decoded,
+                            ],
+                        ],
+                    ];
+                }
+
                 return [
                     'application/json' => [
                         'schema' => [

tests/Unit/OpenAPISpecWriterTest.php

@@ -680,6 +680,52 @@ public function adds_responses_correctly_as_responses_on_operation_object()
         ], $results['paths']['/path2']['put']['responses']);
     }
 
+    /** @test */
+    public function adds_responses_correctly_as_array_of_objects()
+    {
+        $endpointData1 = $this->createMockEndpointData([
+            'httpMethods' => ['GET'],
+            'uri' => '/path1',
+            'responses' => [
+                [
+                    'status' => 200,
+                    'description' => 'Successfully.',
+                    'content' => '[{"id": 1, "name": "John"}, {"id": 2, "name": "Jane"}]',
+                ],
+            ],
+        ]);
+        $groups = [$this->createGroup([$endpointData1])];
+
+        $results = $this->generate($groups);
+
+        $this->assertCount(1, $results['paths']['/path1']['get']['responses']);
+        $this->assertArraySubset([
+            '200' => [
+                'description' => 'Successfully.',
+                'content' => [
+                    'application/json' => [
+                        'schema' => [
+                            'type' => 'array',
+                            'items' => [
+                                'type' => 'object',
+                                'properties' => [
+                                    'id' => [
+                                        'type' => 'integer',
+                                        'example' => 1,
+                                    ],
+                                    'name' => [
+                                        'type' => 'string',
+                                        'example' => 'John',
+                                    ],
+                                ]
+                            ],
+                        ],
+                    ],
+                ],
+            ],
+        ], $results['paths']['/path1']['get']['responses']);
+    }
+
     /** @test */
     public function adds_required_fields_on_array_of_objects()
     {