74 lines
2.6 KiB
PHP
74 lines
2.6 KiB
PHP
<?php
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namespace App\Http\Controllers\Base;
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use Illuminate\Http\Request;
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use Illuminate\Http\JsonResponse;
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use Illuminate\Translation\Translator;
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use Illuminate\Contracts\Translation\Loader;
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use App\Http\Controllers\Controller;
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class LocaleController extends Controller
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{
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protected Loader $loader;
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public function __construct(Translator $translator)
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{
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$this->loader = $translator->getLoader();
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}
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/**
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* Returns translation data given a specific locale and namespace.
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*/
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public function __invoke(Request $request): JsonResponse
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{
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$locales = explode(' ', $request->input('locale') ?? '');
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$namespaces = explode(' ', $request->input('namespace') ?? '');
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$response = [];
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foreach ($locales as $locale) {
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$response[$locale] = [];
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foreach ($namespaces as $namespace) {
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$response[$locale][$namespace] = $this->i18n(
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$this->loader->load($locale, str_replace('.', '/', $namespace))
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);
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}
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}
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return new JsonResponse($response, 200, [
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// Cache this in the browser for an hour, and allow the browser to use a stale
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// cache for up to a day after it was created while it fetches an updated set
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// of translation keys.
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'Cache-Control' => 'public, max-age=3600, stale-while-revalidate=86400',
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'ETag' => md5(json_encode($response, JSON_THROW_ON_ERROR)),
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]);
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}
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/**
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* Convert standard Laravel translation keys that look like ":foo"
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* into key structures that are supported by the front-end i18n
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* library, like "{{foo}}".
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*/
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protected function i18n(array $data): array
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{
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foreach ($data as $key => $value) {
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if (is_array($value)) {
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$data[$key] = $this->i18n($value);
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} else {
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// Find a Laravel style translation replacement in the string and replace it with
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// one that the front-end is able to use. This won't always be present, especially
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// for complex strings or things where we'd never have a backend component anyways.
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//
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// For example:
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// "Hello :name, the :notifications.0.title notification needs :count actions :foo.0.bar."
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//
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// Becomes:
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// "Hello {{name}}, the {{notifications.0.title}} notification needs {{count}} actions {{foo.0.bar}}."
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$data[$key] = preg_replace('/:([\w.-]+\w)([^\w:]?|$)/m', '{{$1}}$2', $value);
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}
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}
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return $data;
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}
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}
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