Add account migration configurable, but enabled by default

app/Http/Controllers/Admin/AdminSettingsController.php

@@ -2,18 +2,18 @@
 
 namespace App\Http\Controllers\Admin;
 
-use Artisan, Cache, DB;
-use Illuminate\Http\Request;
-use Carbon\Carbon;
-use App\{Comment, Like, Media, Page, Profile, Report, Status, User};
-use App\Models\InstanceActor;
-use App\Http\Controllers\Controller;
-use App\Util\Lexer\PrettyNumber;
 use App\Models\ConfigCache;
+use App\Models\InstanceActor;
+use App\Page;
+use App\Profile;
 use App\Services\AccountService;
 use App\Services\ConfigCacheService;
+use App\User;
 use App\Util\Site\Config;
-use Illuminate\Support\Str;
+use Artisan;
+use Cache;
+use DB;
+use Illuminate\Http\Request;
 
 trait AdminSettingsController
 {
@@ -35,6 +35,7 @@ trait AdminSettingsController
         $openReg = (bool) config_cache('pixelfed.open_registration');
         $curOnboarding = (bool) config_cache('instance.curated_registration.enabled');
         $regState = $openReg ? 'open' : ($curOnboarding ? 'filtered' : 'closed');
+        $accountMigration = (bool) config_cache('federation.migration');
 
         return view('admin.settings.home', compact(
             'jpeg',
@@ -48,7 +49,8 @@ trait AdminSettingsController
             'cloud_ready',
             'availableAdmins',
             'currentAdmin',
-            'regState'
+            'regState',
+            'accountMigration'
         ));
     }
 
@@ -67,7 +69,8 @@ trait AdminSettingsController
             'type_mp4' => 'nullable',
             'type_webp' => 'nullable',
             'admin_account_id' => 'nullable',
-            'regs' => 'required|in:open,filtered,closed'
+            'regs' => 'required|in:open,filtered,closed',
+            'account_migration' => 'nullable',
         ]);
 
         $orb = false;
@@ -109,6 +112,7 @@ trait AdminSettingsController
             ConfigCacheService::put('app.rules', $json);
             Cache::forget('api:v1:instance-data:rules');
             Cache::forget('api:v1:instance-data-response-v1');
+
             return 200;
         }
 
@@ -147,7 +151,7 @@ trait AdminSettingsController
             'account_limit' => 'pixelfed.max_account_size',
             'custom_css' => 'uikit.custom.css',
             'custom_js' => 'uikit.custom.js',
-            'about_title' => 'about.title'
+            'about_title' => 'about.title',
         ];
 
         foreach ($keys as $key => $value) {
@@ -175,6 +179,7 @@ trait AdminSettingsController
             'account_autofollow' => 'account.autofollow',
             'show_directory' => 'instance.landing.show_directory',
             'show_explore_feed' => 'instance.landing.show_explore',
+            'account_migration' => 'federation.migration',
         ];
 
         foreach ($bools as $key => $value) {
@@ -236,6 +241,7 @@ trait AdminSettingsController
     {
         $path = storage_path('app/'.config('app.name'));
         $files = is_dir($path) ? new \DirectoryIterator($path) : [];
+
         return view('admin.settings.backups', compact('files'));
     }
 
@@ -247,6 +253,7 @@ trait AdminSettingsController
     public function settingsStorage(Request $request)
     {
         $storage = [];
+
         return view('admin.settings.storage', compact('storage'));
     }
 
@@ -258,6 +265,7 @@ trait AdminSettingsController
     public function settingsPages(Request $request)
     {
         $pages = Page::orderByDesc('updated_at')->paginate(10);
+
         return view('admin.pages.home', compact('pages'));
     }
 
@@ -279,7 +287,7 @@ trait AdminSettingsController
                 $expQuery = $exp->getValue(DB::connection()->getQueryGrammar());
                 $sys['database'] = [
                     'name' => 'Postgres',
-                'version' => explode(' ', DB::select($expQuery)[0]->version)[1]
+                    'version' => explode(' ', DB::select($expQuery)[0]->version)[1],
                 ];
                 break;
 
@@ -288,17 +296,18 @@ trait AdminSettingsController
                 $expQuery = $exp->getValue(DB::connection()->getQueryGrammar());
                 $sys['database'] = [
                     'name' => 'MySQL',
-                'version' => DB::select($expQuery)[0]->{'version()'}
+                    'version' => DB::select($expQuery)[0]->{'version()'},
                 ];
                 break;
 
             default:
                 $sys['database'] = [
                     'name' => 'Unknown',
-                'version' => '?'
+                    'version' => '?',
                 ];
                 break;
         }
+
         return view('admin.settings.system', compact('sys'));
     }
 }

app/Http/Controllers/ProfileMigrationController.php

@@ -23,6 +23,9 @@ class ProfileMigrationController extends Controller
     public function index(Request $request)
     {
         abort_if((bool) config_cache('federation.activitypub.enabled') === false, 404);
+        if ((bool) config_cache('federation.migration') === false) {
+            return redirect(route('help.account-migration'));
+        }
         $hasExistingMigration = ProfileMigration::whereProfileId($request->user()->profile_id)
             ->where('created_at', '>', now()->subDays(30))
             ->exists();

app/Http/Requests/ProfileMigrationStoreRequest.php

@@ -15,6 +15,10 @@ class ProfileMigrationStoreRequest extends FormRequest
      */
     public function authorize(): bool
     {
+        if ((bool) config_cache('federation.activitypub.enabled') === false ||
+            (bool) config_cache('federation.migration') === false) {
+            return false;
+        }
         if (! $this->user() || $this->user()->status) {
             return false;
         }

app/Services/ConfigCacheService.php

@@ -2,9 +2,8 @@
 
 namespace App\Services;
 
-use Cache;
-use Config;
 use App\Models\ConfigCache as ConfigCacheModel;
+use Cache;
 
 class ConfigCacheService
 {
@@ -74,6 +73,8 @@ class ConfigCacheService
                 'autospam.nlp.enabled',
 
                 'instance.curated_registration.enabled',
+
+                'federation.migration',
                 // 'system.user_mode'
             ];
 
@@ -113,6 +114,7 @@ class ConfigCacheService
             $exists->v = $val;
             $exists->save();
             Cache::put(self::CACHE_KEY.$key, $val, now()->addHours(12));
+
             return self::get($key);
         }
 

config/federation.php

@@ -57,4 +57,6 @@ return [
         // max size in bytes, default is 2mb
         'max_size' => env('CUSTOM_EMOJI_MAX_SIZE', 2000000),
     ],
+
+    'migration' => env('PF_ACCT_MIGRATION_ENABLED', true),
 ];

resources/views/admin/settings/home.blade.php

@@ -103,6 +103,16 @@
 				</div>
 				<p class="mb-4 small">ActivityPub federation, compatible with Pixelfed, Mastodon and other projects.</p>
 
+                <div class="custom-control custom-checkbox mt-2">
+                    <input type="checkbox" name="account_migration" class="custom-control-input" id="ap_mig" {{(bool)config_cache('federation.migration') ? 'checked' : ''}} {{(bool) config_cache('federation.activitypub.enabled') ? '' : 'disabled="disabled"'}}>
+                    <label class="custom-control-label font-weight-bold" for="ap_mig">Account Migration</label>
+                </div>
+                @if((bool) config_cache('federation.activitypub.enabled'))
+                <p class="mb-4 small">Allow local accounts to migrate to other local or remote accounts.</p>
+                @else
+                <p class="mb-4 small text-muted"><strong>ActivityPub Required</strong> Allow local accounts to migrate to other local or remote accounts.</p>
+                @endif
+
 				{{-- <div class="custom-control custom-checkbox mt-2">
 					<input type="checkbox" name="open_registration" class="custom-control-input" id="openReg" {{config_cache('pixelfed.open_registration') ? 'checked' : ''}}>
 					<label class="custom-control-label font-weight-bold" for="openReg">Open Registrations</label>

resources/views/settings/home.blade.php

@@ -88,6 +88,7 @@
 			</div>
 		</div>
 
+        @if((bool) config_cache('federation.activitypub.enabled'))
         <div class="form-group row">
             <label for="aliases" class="col-sm-3 col-form-label font-weight-bold">Account Aliases</label>
             <div class="col-sm-9" id="aliases">
@@ -96,6 +97,7 @@
             </div>
         </div>
 
+        @if((bool) config_cache('federation.migration'))
         <div class="form-group row">
             <label for="aliases" class="col-sm-3 col-form-label font-weight-bold">Account Migrate</label>
             <div class="col-sm-9" id="aliases">
@@ -103,6 +105,8 @@
                 <p class="help-text text-muted small">To redirect this account to a different one (where supported).</p>
             </div>
         </div>
+        @endif
+        @endif
 		@if(config_cache('pixelfed.enforce_account_limit'))
 		<div class="pt-3">
 			<p class="font-weight-bold text-muted text-center">Storage Usage</p>

resources/views/settings/migration/index.blade.php

@@ -40,7 +40,8 @@
                 @if($hasExistingMigration)
                 <div class="row">
                     <div class="col-12 mt-5">
-                        <p class="lead mb-0 text-center">You have migrated your account already.</p>
+                        <p class="lead text-center">You have migrated your account already.</p>
+                        <p>You can only migrate your account once per 30 days. If you want to migrate your followers back to this account, follow this process in reverse.</p>
                     </div>
                 </div>
                 @else

resources/views/site/help/account-migration.blade.php

@@ -0,0 +1,19 @@
+@extends('site.help.partial.template', ['breadcrumb'=>'Account Migration'])
+
+@section('section')
+
+    <div class="title">
+        <h3 class="font-weight-bold">Account Migration</h3>
+    </div>
+
+    <hr>
+
+    @if((bool) config_cache('federation.migration') === false)
+    <div class="alert alert-danger">
+        <p class="font-weight-bold mb-0">Account Migration is not available on this server.</p>
+    </div>
+    @endif
+
+    <p class="lead">Account Migration is a feature that allows users to move their account followers from one Pixelfed instance (server) to another.</p>
+    <p class="lead">This can be useful if a user wants to switch to a different instance due to preferences for its community, policies, or features.</p>
+@endsection

routes/web.php

@@ -314,6 +314,7 @@ Route::domain(config('pixelfed.domain.app'))->middleware(['validemail', 'twofact
             Route::view('parental-controls', 'site.help.parental-controls');
             Route::view('email-confirmation-issues', 'site.help.email-confirmation-issues')->name('help.email-confirmation-issues');
             Route::view('curated-onboarding', 'site.help.curated-onboarding')->name('help.curated-onboarding');
+            Route::view('account-migration', 'site.help.account-migration')->name('help.account-migration');
         });
         Route::get('newsroom/{year}/{month}/{slug}', 'NewsroomController@show');
         Route::get('newsroom/archive', 'NewsroomController@archive');