|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Psr7Middlewares\Middleware; |
|
4
|
|
|
|
|
5
|
|
|
use Psr7Middlewares\Utils; |
|
6
|
|
|
use Negotiation\LanguageNegotiator as Negotiator; |
|
7
|
|
|
use Psr\Http\Message\ServerRequestInterface; |
|
8
|
|
|
use Psr\Http\Message\ResponseInterface; |
|
9
|
|
|
|
|
10
|
|
|
/** |
|
11
|
|
|
* Middleware returns the client preferred language. |
|
12
|
|
|
*/ |
|
13
|
|
|
class LanguageNegotiator |
|
14
|
|
|
{ |
|
15
|
|
|
use Utils\NegotiateTrait; |
|
16
|
|
|
use Utils\RedirectTrait; |
|
17
|
|
|
use Utils\AttributeTrait; |
|
18
|
|
|
|
|
19
|
|
|
const KEY = 'LANGUAGE'; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* @var array Allowed languages |
|
23
|
|
|
*/ |
|
24
|
|
|
private $languages = []; |
|
25
|
|
|
|
|
26
|
|
|
/** |
|
27
|
|
|
* @var bool Use the path to detect the language |
|
28
|
|
|
*/ |
|
29
|
|
|
private $usePath = false; |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* Returns the language. |
|
33
|
|
|
* |
|
34
|
|
|
* @param ServerRequestInterface $request |
|
35
|
|
|
* |
|
36
|
|
|
* @return string|null |
|
37
|
|
|
*/ |
|
38
|
|
|
public static function getLanguage(ServerRequestInterface $request) |
|
39
|
|
|
{ |
|
40
|
|
|
return self::getAttribute($request, self::KEY); |
|
41
|
|
|
} |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* Define de available languages. |
|
45
|
|
|
* |
|
46
|
|
|
* @param array $languages |
|
47
|
|
|
*/ |
|
48
|
|
|
public function __construct(array $languages) |
|
49
|
|
|
{ |
|
50
|
|
|
$this->languages = $languages; |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* Use the base path to detect the current language. |
|
55
|
|
|
* |
|
56
|
|
|
* @param bool $usePath |
|
57
|
|
|
* |
|
58
|
|
|
* @return self |
|
59
|
|
|
*/ |
|
60
|
|
|
public function usePath($usePath = true) |
|
61
|
|
|
{ |
|
62
|
|
|
$this->usePath = $usePath; |
|
63
|
|
|
|
|
64
|
|
|
return $this; |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
/** |
|
68
|
|
|
* Execute the middleware. |
|
69
|
|
|
* |
|
70
|
|
|
* @param ServerRequestInterface $request |
|
71
|
|
|
* @param ResponseInterface $response |
|
72
|
|
|
* @param callable $next |
|
73
|
|
|
* |
|
74
|
|
|
* @return ResponseInterface |
|
75
|
|
|
*/ |
|
76
|
|
|
public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next) |
|
77
|
|
|
{ |
|
78
|
|
|
$language = null; |
|
79
|
|
|
$uri = $request->getUri(); |
|
80
|
|
|
|
|
81
|
|
|
//Use path |
|
82
|
|
|
if ($this->usePath) { |
|
83
|
|
|
$path = ltrim($uri->getPath(), '/'); |
|
84
|
|
|
$dirs = explode('/', $path, 2); |
|
85
|
|
|
$first = strtolower(array_shift($dirs)); |
|
86
|
|
|
|
|
87
|
|
|
if (!empty($first) && in_array($first, $this->languages, true)) { |
|
88
|
|
|
$language = $first; |
|
89
|
|
|
|
|
90
|
|
|
//remove the language in the path |
|
91
|
|
|
$request = $request->withUri($uri->withPath('/'.array_shift($dirs))); |
|
92
|
|
|
} |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
//Use http headers |
|
96
|
|
|
if ($language === null) { |
|
97
|
|
|
$language = $this->negotiateHeader($request->getHeaderLine('Accept-Language'), new Negotiator(), $this->languages); |
|
98
|
|
|
|
|
99
|
|
|
if (empty($language)) { |
|
100
|
|
|
$language = isset($this->languages[0]) ? $this->languages[0] : ''; |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
|
|
//Redirect to a path with the language |
|
104
|
|
|
if ($this->redirectStatus !== false && $this->usePath) { |
|
105
|
|
|
$path = Utils\Helpers::joinPath($language, $uri->getPath()); |
|
106
|
|
|
|
|
107
|
|
|
return $this->getRedirectResponse($request, $uri->withPath($path), $response); |
|
108
|
|
|
} |
|
109
|
|
|
} |
|
110
|
|
|
|
|
111
|
|
|
$response = $next( |
|
112
|
|
|
self::setAttribute($request, self::KEY, $language), |
|
113
|
|
|
$response->withHeader('Content-Language', $language) |
|
114
|
|
|
); |
|
115
|
|
|
|
|
116
|
|
|
if (!$response->hasHeader('Content-Language')) { |
|
117
|
|
|
$response = $response->withHeader('Content-Language', $language); |
|
118
|
|
|
} |
|
119
|
|
|
|
|
120
|
|
|
return $response; |
|
121
|
|
|
} |
|
122
|
|
|
} |
|
123
|
|
|
|
oscarotero /
psr7-middlewares
