148 lines
5.8 KiB
PHP
148 lines
5.8 KiB
PHP
<?php
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declare(strict_types=1);
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namespace app\common\middleware;
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use Webman\MiddlewareInterface;
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use Webman\Http\Request;
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use Webman\Http\Response;
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/**
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* 加载控制器语言包中间件(Webman 迁移版,等价 ThinkPHP LoadLangPack)
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* 根据当前路由加载对应控制器的语言包到 Translator
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*
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* 对外 api/:优先请求头 lang(zh / zh-cn → 中文包 zh-cn,en → 英文包),未传则 think-lang,再默认 zh-cn(不根据浏览器 Accept-Language)
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* admin/:think-lang → Accept-Language → 配置默认
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*/
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class LoadLangPack implements MiddlewareInterface
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{
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public function process(Request $request, callable $handler): Response
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{
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$path = trim($request->path(), '/');
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if (str_starts_with($path, 'api/') || str_starts_with($path, 'admin/')) {
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$this->loadLang($request);
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}
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return $handler($request);
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}
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protected function loadLang(Request $request): void
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{
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$path = trim($request->path(), '/');
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$isApi = str_starts_with($path, 'api/');
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$isAdmin = str_starts_with($path, 'admin/');
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$allowLangList = config('lang.allow_lang_list', ['zh-cn', 'en']);
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$langSet = null;
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// 对外 API(PlayX、H5 等):优先 lang 请求头,默认中文 zh-cn,不跟随浏览器 Accept-Language
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if ($isApi) {
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$langHeader = $request->header('lang');
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if (is_array($langHeader)) {
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$langHeader = $langHeader[0] ?? '';
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}
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$langHeader = is_string($langHeader) ? trim($langHeader) : '';
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if ($langHeader !== '') {
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$langSet = $this->normalizeLangHeader($langHeader, $allowLangList);
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}
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}
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// 与后台 Vue 一致的 think-lang(对外 API 在 lang 未设置时仍可生效)
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if ($langSet === null) {
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$headerLang = $request->header('think-lang');
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if (is_array($headerLang)) {
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$headerLang = $headerLang[0] ?? '';
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}
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$headerLang = is_string($headerLang) ? trim($headerLang) : '';
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if ($headerLang !== '') {
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$normalized = str_replace('_', '-', strtolower($headerLang));
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if (in_array($normalized, $allowLangList, true)) {
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$langSet = $normalized;
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}
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}
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}
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if ($langSet === null) {
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if ($isApi) {
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$langSet = 'zh-cn';
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} elseif ($isAdmin) {
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$acceptLang = $request->header('accept-language', '');
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if (is_array($acceptLang)) {
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$acceptLang = $acceptLang[0] ?? '';
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}
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$acceptLang = is_string($acceptLang) ? $acceptLang : '';
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if (preg_match('/^zh[-_]?cn|^zh/i', $acceptLang)) {
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$langSet = 'zh-cn';
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} elseif (preg_match('/^en/i', $acceptLang)) {
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$langSet = 'en';
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} else {
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$langSet = config('lang.default_lang', config('translation.locale', 'zh-cn'));
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}
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$langSet = str_replace('_', '-', strtolower((string) $langSet));
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} else {
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$langSet = config('lang.default_lang', config('translation.locale', 'zh-cn'));
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$langSet = str_replace('_', '-', strtolower((string) $langSet));
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}
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}
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// 设置当前请求的翻译语言,使 __() 和 trans() 使用正确的语言
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if (function_exists('locale')) {
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locale($langSet);
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}
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$parts = explode('/', $path);
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$app = $parts[0] ?? 'api';
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$appLangDir = base_path() . DIRECTORY_SEPARATOR . 'app' . DIRECTORY_SEPARATOR . $app . DIRECTORY_SEPARATOR . 'lang' . DIRECTORY_SEPARATOR;
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if (!class_exists(\support\Translation::class)) {
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return;
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}
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$translator = \support\Translation::instance();
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// 1. 加载根级语言包(zh-cn.php / en.php),供 common 翻译使用
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$rootLangFile = $appLangDir . $langSet . '.php';
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if (is_file($rootLangFile)) {
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$translator->addResource('phpfile', $rootLangFile, $langSet, 'messages');
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}
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// 2. 加载控制器专用语言包(如 zh-cn/auth/group.php),供 get_route_remark 等使用
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// 同时加载到 messages 域,使 __() 能正确翻译控制器内的文案(如安装页错误提示)
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$controllerPath = get_controller_path($request);
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if ($controllerPath) {
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$controllerPathForFile = str_replace('.', '/', $controllerPath);
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$controllerPathForFile = implode('/', array_map(function ($p) {
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return strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', $p));
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}, explode('/', $controllerPathForFile)));
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$controllerLangFile = $appLangDir . $langSet . DIRECTORY_SEPARATOR . str_replace('/', DIRECTORY_SEPARATOR, $controllerPathForFile) . '.php';
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if (is_file($controllerLangFile)) {
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$translator->addResource('phpfile', $controllerLangFile, $langSet, $controllerPath);
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$translator->addResource('phpfile', $controllerLangFile, $langSet, 'messages');
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}
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}
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}
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/**
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* 将 lang 请求头取值映射为语言包标识(zh / zh-cn → zh-cn,en → en)
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*/
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private function normalizeLangHeader(string $raw, array $allowLangList): ?string
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{
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$s = str_replace('_', '-', strtolower(trim($raw)));
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if ($s === '') {
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return null;
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}
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if (in_array($s, $allowLangList, true)) {
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return $s;
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}
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if (str_starts_with($s, 'en')) {
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return in_array('en', $allowLangList, true) ? 'en' : null;
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}
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if ($s === 'zh' || str_starts_with($s, 'zh-')) {
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return in_array('zh-cn', $allowLangList, true) ? 'zh-cn' : null;
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}
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return null;
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}
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}
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