[4.x] Make TenancyUrlGenerator inherit the original UrlGenerator's scheme (http or https) (#1390)

Before, when using UrlGeneratorBootstrapper, and your app had a
`https://` url, in tenant context, the url would have the `http://`
scheme.

Now, the bootstrapper makes sure that the TenancyUrlGenerator inherits
the original UrlGenerator's scheme. So if your app has e.g. url
"https://some-url.test", `route('home')` in tenant context will return
"http**s**://some-url.test/home" (originally, you'd get
"http://some-url.test/home" - the original scheme - https - wouldn't be
respected in the tenant context).

This PR addresses the issue reported on Discord
(https://discord.com/channels/976506366502006874/976506736120823909/1399012794514411621).

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Samuel Štancl <samuel@archte.ch>

src/Bootstrappers/UrlGeneratorBootstrapper.php

@@ -7,6 +7,7 @@ namespace Stancl\Tenancy\Bootstrappers;
 use Illuminate\Contracts\Foundation\Application;
 use Illuminate\Routing\UrlGenerator;
 use Illuminate\Support\Facades\URL;
+use Illuminate\Support\Str;
 use Stancl\Tenancy\Contracts\TenancyBootstrapper;
 use Stancl\Tenancy\Contracts\Tenant;
 use Stancl\Tenancy\Overrides\TenancyUrlGenerator;
@@ -78,6 +79,10 @@ class UrlGeneratorBootstrapper implements TenancyBootstrapper
             }
         }
 
+        // Inherit scheme (http/https) from the original generator
+        $originalScheme = Str::before($this->originalUrlGenerator->formatScheme(), '://');
+        $newGenerator->forceScheme($originalScheme);
+
         $newGenerator->defaults($defaultParameters);
 
         $newGenerator->setSessionResolver(function () {

tests/Bootstrappers/UrlGeneratorBootstrapperTest.php

@@ -18,7 +18,6 @@ use Stancl\Tenancy\Bootstrappers\UrlGeneratorBootstrapper;
 use Stancl\Tenancy\Exceptions\TenantCouldNotBeIdentifiedByRequestDataException;
 use Stancl\Tenancy\Middleware\InitializeTenancyByRequestData;
 use Stancl\Tenancy\Resolvers\RequestDataTenantResolver;
-
 use function Stancl\Tenancy\Tests\pest;
 
 beforeEach(function () {
@@ -80,6 +79,44 @@ test('tenancy url generator can prefix route names passed to the route helper',
     expect(route('home'))->toBe('http://localhost/central/home');
 });
 
+test('tenancy url generator inherits scheme from original url generator', function() {
+    config(['tenancy.bootstrappers' => [UrlGeneratorBootstrapper::class]]);
+
+    Route::get('/home', fn () => '')->name('home');
+
+    // No scheme forced, default is HTTP
+    expect(app('url')->formatScheme())->toBe('http://');
+
+    $tenant = Tenant::create();
+
+    // Force the original URL generator to use HTTPS
+    app('url')->forceScheme('https');
+
+    // Original generator uses HTTPS
+    expect(app('url')->formatScheme())->toBe('https://');
+
+    // Check that TenancyUrlGenerator inherits the HTTPS scheme
+    tenancy()->initialize($tenant);
+    expect(app('url')->formatScheme())->toBe('https://'); // Should inherit HTTPS
+    expect(route('home'))->toBe('https://localhost/home');
+
+    tenancy()->end();
+
+    // After ending tenancy, the original generator should still have the original scheme (HTTPS)
+    expect(route('home'))->toBe('https://localhost/home');
+
+    // Use HTTP scheme
+    app('url')->forceScheme('http');
+    expect(app('url')->formatScheme())->toBe('http://');
+
+    tenancy()->initialize($tenant);
+    expect(app('url')->formatScheme())->toBe('http://'); // Should inherit scheme (HTTP)
+    expect(route('home'))->toBe('http://localhost/home');
+
+    tenancy()->end();
+    expect(route('home'))->toBe('http://localhost/home');
+});
+
 test('path identification route helper behavior', function (bool $addTenantParameterToDefaults, bool $passTenantParameterToRoutes) {
     config(['tenancy.bootstrappers' => [UrlGeneratorBootstrapper::class]]);