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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray; |
| 6 | |
| 7 | use Celemas\Core\App; |
| 8 | use Celemas\Core\Plugin as CorePlugin; |
| 9 | use Closure; |
| 10 | use Cosray\Exception\RuntimeException; |
| 11 | use Cosray\Middleware\AddLocale; |
| 12 | use Iterator; |
| 13 | use Psr\Http\Message\ServerRequestInterface as Request; |
| 14 | |
| 15 | class Locales implements Iterator, CorePlugin |
| 16 | { |
| 17 | /** @var array<string, Locale> */ |
| 18 | protected array $locales = []; |
| 19 | |
| 20 | protected ?string $default = null; |
| 21 | protected ?Closure $negotiator = null; |
| 22 | |
| 23 | public function load(App $app): void |
| 24 | { |
| 25 | $app->middleware(new AddLocale($this)); |
| 26 | $app->register(self::class, $this); |
| 27 | } |
| 28 | |
| 29 | public function add( |
| 30 | string $id, |
| 31 | string $title, |
| 32 | ?string $fallback = null, |
| 33 | ?string $pgDict = null, |
| 34 | ?array $domains = null, |
| 35 | ?string $urlPrefix = null, |
| 36 | ) { |
| 37 | // The first locale is always the default one |
| 38 | if ($this->default === null) { |
| 39 | $this->default = $id; |
| 40 | } |
| 41 | |
| 42 | $this->locales[$id] = new Locale($this, $id, $title, $fallback, $pgDict, $domains, $urlPrefix); |
| 43 | } |
| 44 | |
| 45 | public function get(string $id): Locale |
| 46 | { |
| 47 | return $this->locales[$id]; |
| 48 | } |
| 49 | |
| 50 | public function rewind(): void |
| 51 | { |
| 52 | reset($this->locales); |
| 53 | } |
| 54 | |
| 55 | public function current(): Locale |
| 56 | { |
| 57 | return current($this->locales); |
| 58 | } |
| 59 | |
| 60 | public function key(): string |
| 61 | { |
| 62 | return key($this->locales); |
| 63 | } |
| 64 | |
| 65 | public function next(): void |
| 66 | { |
| 67 | next($this->locales); |
| 68 | } |
| 69 | |
| 70 | public function valid(): bool |
| 71 | { |
| 72 | return key($this->locales) !== null; |
| 73 | } |
| 74 | |
| 75 | public function getDefault(): Locale |
| 76 | { |
| 77 | // default locale from config file |
| 78 | if ($this->default === null) { |
| 79 | throw new RuntimeException('Default locale not available'); |
| 80 | } |
| 81 | |
| 82 | return $this->locales[$this->default]; |
| 83 | } |
| 84 | |
| 85 | public function negotiate(Request $request): Locale |
| 86 | { |
| 87 | if ($this->negotiator) { |
| 88 | return ($this->negotiator)($request, $this->locales, $this->getDefault()); |
| 89 | } |
| 90 | |
| 91 | return $this->fromRequest($request, $this->locales, $this->getDefault()); |
| 92 | } |
| 93 | |
| 94 | public function setNegotiator(Closure $func): void |
| 95 | { |
| 96 | $this->negotiator = $func; |
| 97 | } |
| 98 | |
| 99 | protected function fromRequest(Request $request, array $locales, Locale $default): Locale |
| 100 | { |
| 101 | $uri = $request->getUri(); |
| 102 | |
| 103 | // From query paramter |
| 104 | $locale = $request->getQueryParams()['locale'] ?? null; |
| 105 | |
| 106 | if ($locale && $this->exists($locale)) { |
| 107 | return $locales[$locale]; |
| 108 | } |
| 109 | |
| 110 | // By domain |
| 111 | $host = strtolower(explode(':', $uri->getHost())[0]); |
| 112 | |
| 113 | foreach ($locales as $locale) { |
| 114 | foreach ($locale->domains as $domain) { |
| 115 | if ($host === $domain) { |
| 116 | return $locale; |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | // From URL path prefix. e. g. http://example.com/en_EN/path/to/page |
| 122 | $prefix = explode('/', trim($uri->getPath(), '/'))[0]; |
| 123 | |
| 124 | foreach ($locales as $locale) { |
| 125 | if ($prefix === $locale->urlPrefix) { |
| 126 | return $locale; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | // From session |
| 131 | $session = $request->getAttribute('session', null); |
| 132 | |
| 133 | if ($session) { |
| 134 | $locale = $session->get('locale', false); |
| 135 | |
| 136 | if ($locale && $this->exists($locale)) { |
| 137 | return $locales[$locale]; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | // From the locales the browser says the user accepts |
| 142 | // $locale = $this->fromBrowser(); |
| 143 | // if ($locale && $this->exists($locale)) { |
| 144 | // return $locales[$locale]; |
| 145 | // } |
| 146 | |
| 147 | return $default; |
| 148 | } |
| 149 | |
| 150 | protected function exists(string $id): bool |
| 151 | { |
| 152 | return array_key_exists($id, $this->locales); |
| 153 | } |
| 154 | |
| 155 | protected function fromBrowser(): string|false |
| 156 | { |
| 157 | if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { |
| 158 | preg_match_all( |
| 159 | '/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', |
| 160 | $_SERVER['HTTP_ACCEPT_LANGUAGE'], |
| 161 | $matches, |
| 162 | ); |
| 163 | |
| 164 | if (count($matches[1])) { |
| 165 | $langs = array_combine($matches[1], $matches[4]); |
| 166 | |
| 167 | foreach ($langs as $lang => $val) { |
| 168 | if ($val !== '') { |
| 169 | continue; |
| 170 | } |
| 171 | |
| 172 | $langs[$lang] = 1; |
| 173 | } |
| 174 | |
| 175 | arsort($langs, SORT_NUMERIC); |
| 176 | |
| 177 | foreach ($langs as $lang => $val) { |
| 178 | if ($this->exists($lang)) { |
| 179 | return $lang; |
| 180 | } |
| 181 | |
| 182 | $lang = str_replace('-', '_', $lang); |
| 183 | |
| 184 | if ($this->exists($lang)) { |
| 185 | return $lang; |
| 186 | } |
| 187 | |
| 188 | $lang = strtok($lang, '_'); |
| 189 | |
| 190 | if ($this->exists($lang)) { |
| 191 | return $lang; |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | return false; |
| 198 | } |
| 199 | } |