init

kirby/src/Cms/LanguageRoutes.php

@@ -0,0 +1,156 @@
+<?php
+
+namespace Kirby\Cms;
+
+use Kirby\Filesystem\F;
+
+class LanguageRoutes
+{
+	/**
+	 * Creates all multi-language routes
+	 */
+	public static function create(App $kirby): array
+	{
+		$routes = [];
+
+		// add the route for the home page
+		$routes[] = static::home($kirby);
+
+		// Kirby's base url
+		$baseurl = $kirby->url();
+
+		foreach ($kirby->languages() as $language) {
+			// ignore languages with a different base url
+			if ($language->baseurl() !== $baseurl) {
+				continue;
+			}
+
+			$routes[] = [
+				'pattern' => $language->pattern(),
+				'method'  => 'ALL',
+				'env'     => 'site',
+				'action'  => function ($path = null) use ($language) {
+					$result = $language->router()->call($path);
+
+					// explicitly test for null as $result can
+					// contain falsy values that should still be returned
+					if ($result !== null) {
+						return $result;
+					}
+
+					// jump through to the fallback if nothing
+					// can be found for this language
+					/** @var \Kirby\Http\Route $this */
+					$this->next();
+				}
+			];
+		}
+
+		$routes[] = static::fallback($kirby);
+
+		return $routes;
+	}
+
+
+	/**
+	 * Create the fallback route
+	 * for unprefixed default language URLs.
+	 */
+	public static function fallback(App $kirby): array
+	{
+		return [
+			'pattern' => '(:all)',
+			'method'  => 'ALL',
+			'env'     => 'site',
+			'action'  => function (string $path) use ($kirby) {
+				// check for content representations or files
+				$extension = F::extension($path);
+
+				// try to redirect prefixed pages
+				if (
+					empty($extension) === true &&
+					$page = $kirby->page($path)
+				) {
+					$url = $kirby->request()->url([
+						'query'    => null,
+						'params'   => null,
+						'fragment' => null
+					]);
+
+					if ($url->toString() !== $page->url()) {
+						// redirect to translated page directly if translation
+						// is exists and languages detect is enabled
+						$lang = $kirby->detectedLanguage()->code();
+
+						if (
+							$kirby->option('languages.detect') === true &&
+							$page->translation($lang)->exists() === true
+						) {
+							return $kirby
+								->response()
+								->redirect($page->url($lang));
+						}
+
+						return $kirby
+							->response()
+							->redirect($page->url());
+					}
+				}
+
+				return $kirby->language()->router()->call($path);
+			}
+		];
+	}
+
+	/**
+	 * Create the multi-language home page route
+	 */
+	public static function home(App $kirby): array
+	{
+		// Multi-language home
+		return [
+			'pattern' => '',
+			'method'  => 'ALL',
+			'env'     => 'site',
+			'action'  => function () use ($kirby) {
+				// find all languages with the same base url as the current installation
+				$languages = $kirby->languages()->filter(
+					'baseurl',
+					$kirby->url()
+				);
+
+				// if there's no language with a matching base url,
+				// redirect to the default language
+				if ($languages->count() === 0) {
+					return $kirby
+						->response()
+						->redirect($kirby->defaultLanguage()->url());
+				}
+
+				// if there's just one language,
+				// we take that to render the home page
+				if ($languages->count() === 1) {
+					$currentLanguage = $languages->first();
+				} else {
+					$currentLanguage = $kirby->defaultLanguage();
+				}
+
+				// language detection on the home page with / as URL
+				if ($kirby->url() !== $currentLanguage->url()) {
+					if ($kirby->option('languages.detect') === true) {
+						return $kirby
+							->response()
+							->redirect($kirby->detectedLanguage()->url());
+					}
+
+					return $kirby
+						->response()
+						->redirect($currentLanguage->url());
+				}
+
+				// render the home page of the current language
+				return $currentLanguage->router()->call();
+			}
+		];
+	}
+}