Finalize file API (references #58)

controllers/FilesApiController.php

@@ -29,6 +29,40 @@ class FilesApiController extends BaseApiController
 
 			$data = $request->getBody()->getContents();
 			file_put_contents($this->FilesService->GetFilePath($args['group'], $fileName), $data);
+
+			return $this->ApiResponse(array('success' => true));
+		}
+		catch (\Exception $ex)
+		{
+			return $this->VoidApiActionResponse($response, false, 400, $ex->getMessage());
+		}
+	}
+
+	public function ServeFile(\Slim\Http\Request $request, \Slim\Http\Response $response, array $args)
+	{
+		try
+		{
+			if (isset($request->getQueryParams()['file_name']) && !empty($request->getQueryParams()['file_name']) && IsValidFileName($request->getQueryParams()['file_name']))
+			{
+				$fileName = $request->getQueryParams()['file_name'];
+			}
+			else
+			{
+				throw new \Exception('file_name query parameter missing or contains an invalid filename');
+			}
+
+			$filePath = $this->FilesService->GetFilePath($args['group'], $fileName);
+
+			if (file_exists($filePath))
+			{
+				$response->write(file_get_contents($filePath));
+				$response = $response->withHeader('Content-Type', mime_content_type($filePath));
+				return $response->withHeader('Content-Disposition', 'inline; filename="' . $fileName . '"');
+			}
+			else
+			{
+				return $this->VoidApiActionResponse($response, false, 404, 'File not found');
+			}
 		}
 		catch (\Exception $ex)
 		{

grocy.openapi.json

@@ -491,6 +491,57 @@
 				}
 			}
 		},
+		"/files/get/{group}": {
+			"get": {
+				"description": "Serves the given file",
+				"tags": [
+					"Files"
+				],
+				"parameters": [
+					{
+						"in": "path",
+						"name": "group",
+						"required": true,
+						"description": "The file group",
+						"schema": {
+							"type": "string"
+						}
+					},
+					{
+						"in": "query",
+						"name": "file_name",
+						"required": true,
+						"description": "The file name (including extension)",
+						"schema": {
+							"type": "string"
+						}
+					}
+				],
+				"responses": {
+					"200": {
+						"description": "The binary file contents (mime type is set based on file extension)",
+						"content": {
+							"application/octet-stream": {
+								"schema": {
+									"type": "string",
+									"format": "binary"
+								}
+							}
+						}
+					},
+					"400": {
+						"description": "A VoidApiActionResponse object",
+						"content": {
+							"application/json": {
+								"schema": {
+									"$ref": "#/components/schemas/ErrorExampleVoidApiActionResponse"
+								}
+							}
+						}
+					}
+				}
+			}
+		},
 		"/users/get": {
 			"get": {
 				"description": "Returns all users",

middleware/JsonMiddleware.php

@@ -7,6 +7,14 @@ class JsonMiddleware extends BaseMiddleware
 	public function __invoke(\Slim\Http\Request $request, \Slim\Http\Response $response, callable $next)
 	{
 		$response = $next($request, $response);
-		return $response->withHeader('Content-Type', 'application/json');
+
+		if ($response->hasHeader('Content-Disposition'))
+		{
+			return $response;
+		}
+		else
+		{
+			return $response->withHeader('Content-Type', 'application/json');
+		}
 	}
 }

routes.php

@@ -85,6 +85,7 @@ $app->group('/api', function()
 
 	// Files
 	$this->post('/files/upload/{group}', '\Grocy\Controllers\FilesApiController:Upload');
+	$this->get('/files/get/{group}', '\Grocy\Controllers\FilesApiController:ServeFile');
 
 	// Users
 	$this->get('/users/get', '\Grocy\Controllers\UsersApiController:GetUsers');