deferred migrations system (#175)

src/Facades/DeferredMigration.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Seat\Services\Facades;
+
+use Closure;
+use Illuminate\Support\Facades\Facade;
+use Seat\Services\Services\DeferredMigrationRegistry;
+
+/**
+ * @method static void schedule(Closure $migration)
+ */
+class DeferredMigration extends Facade
+{
+    protected static function getFacadeAccessor(): string
+    {
+        return DeferredMigrationRegistry::class;
+    }
+}

src/Listeners/RunDeferredMigrations.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Seat\Services\Listeners;
+
+use Illuminate\Contracts\Container\BindingResolutionException;
+use Illuminate\Database\Events\MigrationsEnded;
+use Seat\Services\Services\DeferredMigrationRegistry;
+
+class RunDeferredMigrations
+{
+    /**
+     * @throws BindingResolutionException
+     */
+    public function handle(MigrationsEnded $event) {
+        $registry = app()->make(DeferredMigrationRegistry::class);
+
+        $registry->runMigrations();
+    }
+}

src/Services/DeferredMigrationRegistry.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Seat\Services\Services;
+
+use Closure;
+
+class DeferredMigrationRegistry
+{
+    /**
+     * @var array<Closure>
+     */
+    protected array $deferred_migrations = [];
+
+    public function schedule(Closure $migration): void {
+        $this->deferred_migrations[] = $migration;
+    }
+
+    public function runMigrations(): void {
+        logger()->info(sprintf("[Deferred Migrations] Running %d deferred migrations", count($this->deferred_migrations)));
+
+        foreach ($this->deferred_migrations as $migration){
+            $migration();
+        }
+    }
+}

src/ServicesServiceProvider.php

@@ -22,9 +22,14 @@
 
 namespace Seat\Services;
 
+use Illuminate\Database\Events\MigrationsEnded;
 use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Event;
 use Seat\Services\Commands\Seat\Admin\Email;
 use Seat\Services\Commands\Seat\Version;
+use Seat\Services\Contracts\DeferredMigration;
+use Seat\Services\Listeners\RunDeferredMigrations;
+use Seat\Services\Services\DeferredMigrationRegistry;
 use Seat\Services\Services\InjectedRelationRegistry;
 
 class ServicesServiceProvider extends AbstractSeatPlugin
@@ -76,6 +81,9 @@ public function boot()
 
         // Inform Laravel how to load migrations
         $this->add_migrations();
+
+        // add event listener
+        $this->add_event_listeners();
     }
 
     /**
@@ -92,6 +100,10 @@ public function register()
         $this->app->singleton(InjectedRelationRegistry::class, function () {
             return new InjectedRelationRegistry();
         });
+
+        $this->app->singleton(DeferredMigrationRegistry::class, function () {
+            return new DeferredMigrationRegistry();
+        });
     }
 
     private function addCommands()
@@ -102,6 +114,11 @@ private function addCommands()
         ]);
     }
 
+    private function add_event_listeners(): void
+    {
+        Event::listen(MigrationsEnded::class,RunDeferredMigrations::class);
+    }
+
     /**
      * Set the path for migrations which should
      * be migrated by laravel. More informations: