|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Flatdown\Middlewares; |
|
4
|
|
|
|
|
5
|
|
|
use Interop\Http\ServerMiddleware\DelegateInterface; |
|
6
|
|
|
use Interop\Http\ServerMiddleware\MiddlewareInterface; |
|
7
|
|
|
use Middlewares\Utils; |
|
8
|
|
|
use Psr\Http\Message\ResponseInterface; |
|
9
|
|
|
use Psr\Http\Message\ServerRequestInterface; |
|
10
|
|
|
|
|
11
|
|
|
/** |
|
12
|
|
|
* Wraps the request handler callback in another one that will |
|
13
|
|
|
* try to convert the handler result into a string. |
|
14
|
|
|
* |
|
15
|
|
|
* By default arrays and objects will be converted to JSON. |
|
16
|
|
|
* |
|
17
|
|
|
*/ |
|
18
|
|
|
class ResultConverter implements MiddlewareInterface |
|
19
|
|
|
{ |
|
20
|
|
|
/** |
|
21
|
|
|
* @var string Attribute name for handler reference |
|
22
|
|
|
*/ |
|
23
|
|
|
private $attribute = 'request-handler'; |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* @var callable Converter for non scalar values |
|
27
|
|
|
*/ |
|
28
|
|
|
private $converter; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* Set the attribute name to store handler reference. |
|
32
|
|
|
* |
|
33
|
|
|
* @param string $attribute |
|
34
|
|
|
* |
|
35
|
|
|
* @return self |
|
36
|
|
|
*/ |
|
37
|
|
|
public function attribute($attribute) |
|
38
|
|
|
{ |
|
39
|
|
|
$this->attribute = $attribute; |
|
40
|
|
|
|
|
41
|
|
|
return $this; |
|
42
|
|
|
} |
|
43
|
|
|
|
|
44
|
|
|
/** |
|
45
|
|
|
* Replaces the default converter |
|
46
|
|
|
* |
|
47
|
|
|
* @param callable $converter Converter for non scalar values |
|
48
|
|
|
* |
|
49
|
|
|
* @return self |
|
50
|
|
|
*/ |
|
51
|
|
|
public function converter(callable $converter) |
|
52
|
|
|
{ |
|
53
|
|
|
$this->converter = $converter; |
|
54
|
|
|
|
|
55
|
|
|
return $this; |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
/** |
|
59
|
|
|
* Process a server request and return a response. |
|
60
|
|
|
* |
|
61
|
|
|
* @param ServerRequestInterface $request |
|
62
|
|
|
* @param DelegateInterface $delegate |
|
63
|
|
|
* |
|
64
|
|
|
* @return ResponseInterface |
|
65
|
|
|
*/ |
|
66
|
12 |
|
public function process(ServerRequestInterface $request, DelegateInterface $delegate) |
|
67
|
|
|
{ |
|
68
|
12 |
|
$handler = $request->getAttribute($this->attribute); |
|
69
|
|
|
|
|
70
|
12 |
|
if (!is_callable($handler)) { |
|
71
|
|
|
return $delegate->process($request); |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
|
|
$converter = $this->converter ?: function ($value) { |
|
75
|
|
|
if ((is_array($value) || is_object($value)) && !($value instanceof \Closure)) { |
|
76
|
|
|
$response = Utils\Factory::createResponse(200); |
|
77
|
|
|
$response->getBody()->write(json_encode($value)); |
|
78
|
|
|
|
|
79
|
|
|
return $response->withHeader('content-type', 'application/json'); |
|
80
|
|
|
} |
|
81
|
|
|
throw new \RuntimeException("Incompatible return value returned in the route handler."); |
|
82
|
12 |
|
}; |
|
83
|
|
|
|
|
84
|
12 |
|
$handlerWrapper = function (ServerRequestInterface $request, ...$args) use ($handler, $converter) { |
|
85
|
12 |
|
$result = call_user_func($handler, $request, ...$args); |
|
86
|
|
|
|
|
87
|
9 |
|
if (($result instanceof ResponseInterface) || is_scalar($result)) { |
|
88
|
9 |
|
return $result; |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
if (is_object($result) && method_exists($result, '__toString')) { |
|
92
|
|
|
return $result->__toString(); |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
return $converter($result); |
|
96
|
12 |
|
}; |
|
97
|
|
|
|
|
98
|
12 |
|
$request = $request->withAttribute($this->attribute, $handlerWrapper); |
|
99
|
|
|
|
|
100
|
12 |
|
return $delegate->process($request); |
|
101
|
|
|
} |
|
102
|
|
|
} |
|
103
|
|
|
|
itsjavi /
flatdown
