Improve install command, add custom migrations system

Implemented our own migration repository + migrator (based on Laravel's
stuff) so that we can keep track of which migrations have been run for
core and per-extension. That way we can simple call the migrator to
upgrade core/extensions, and to uninstall extensions.

migrations/2015_02_24_000000_create_access_tokens_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateAccessTokensTable extends Migration
 {

migrations/2015_02_24_000000_create_activity_table.php

@@ -1,36 +0,0 @@
-<?php
-
-use Flarum\Install\Migration;
-use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
-
-class CreateActivityTable extends Migration
-{
-
-    /**
-     * Run the migrations.
-     *
-     * @return void
-     */
-    public function up()
-    {
-        $this->schema->create('activity', function (Blueprint $table) {
-            $table->increments('id');
-            $table->integer('user_id')->unsigned();
-            $table->string('type', 100);
-            $table->integer('subject_id')->unsigned()->nullable();
-            $table->binary('data')->nullable();
-            $table->dateTime('time');
-        });
-    }
-
-    /**
-     * Reverse the migrations.
-     *
-     * @return void
-     */
-    public function down()
-    {
-        $this->schema->drop('activity');
-    }
-}

migrations/2015_02_24_000000_create_config_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateConfigTable extends Migration
 {
@@ -15,7 +14,6 @@ class CreateConfigTable extends Migration
     public function up()
     {
         $this->schema->create('config', function (Blueprint $table) {
-        
             $table->string('key', 100)->primary();
             $table->binary('value')->nullable();
         });

migrations/2015_02_24_000000_create_discussions_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateDiscussionsTable extends Migration
 {
@@ -15,7 +14,6 @@ class CreateDiscussionsTable extends Migration
     public function up()
     {
         $this->schema->create('discussions', function (Blueprint $table) {
-
             $table->increments('id');
             $table->string('title', 200);
             $table->integer('comments_count')->unsigned()->default(0);

migrations/2015_02_24_000000_create_email_tokens_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateEmailTokensTable extends Migration
 {

migrations/2015_02_24_000000_create_groups_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateGroupsTable extends Migration
 {

migrations/2015_02_24_000000_create_notifications_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateNotificationsTable extends Migration
 {
@@ -15,7 +14,6 @@ class CreateNotificationsTable extends Migration
     public function up()
     {
         $this->schema->create('notifications', function (Blueprint $table) {
-
             $table->increments('id');
             $table->integer('user_id')->unsigned();
             $table->integer('sender_id')->unsigned()->nullable();

migrations/2015_02_24_000000_create_password_tokens_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreatePasswordTokensTable extends Migration
 {

migrations/2015_02_24_000000_create_permissions_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreatePermissionsTable extends Migration
 {
@@ -15,7 +14,6 @@ class CreatePermissionsTable extends Migration
     public function up()
     {
         $this->schema->create('permissions', function (Blueprint $table) {
-        
             $table->integer('group_id')->unsigned();
             $table->string('permission', 100);
             $table->primary(['group_id', 'permission']);

migrations/2015_02_24_000000_create_posts_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreatePostsTable extends Migration
 {

migrations/2015_02_24_000000_create_users_discussions_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateUsersDiscussionsTable extends Migration
 {

migrations/2015_02_24_000000_create_users_groups_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateUsersGroupsTable extends Migration
 {
@@ -15,7 +14,6 @@ class CreateUsersGroupsTable extends Migration
     public function up()
     {
         $this->schema->create('users_groups', function (Blueprint $table) {
-        
             $table->integer('user_id')->unsigned();
             $table->integer('group_id')->unsigned();
             $table->primary(['user_id', 'group_id']);

migrations/2015_02_24_000000_create_users_table.php

@@ -1,8 +1,7 @@
 <?php
 
-use Flarum\Install\Migration;
+use Flarum\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
 
 class CreateUsersTable extends Migration
 {

migrations/2015_08_14_000000_create_test_table.php

@@ -0,0 +1,29 @@
+<?php
+
+use Flarum\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+
+class CreateTestTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $this->schema->create('test', function (Blueprint $table) {
+            $table->increments('id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        $this->schema->drop('test');
+    }
+}

src/Console/ConsoleServiceProvider.php

@@ -1,23 +0,0 @@
-<?php namespace Flarum\Console;
-
-use Illuminate\Support\ServiceProvider;
-
-class ConsoleServiceProvider extends ServiceProvider
-{
-    /**
-     * Bootstrap the application events.
-     *
-     * @return void
-     */
-    public function boot()
-    {
-        //$this->commands('Flarum\Console\InstallCommand');
-        $this->commands('Flarum\Console\SeedCommand');
-        $this->commands('Flarum\Console\ImportCommand');
-        $this->commands('Flarum\Console\GenerateExtensionCommand');
-    }
-
-    public function register()
-    {
-    }
-}

src/Console/GenerateExtensionCommand.php

@@ -1,37 +1,28 @@
 <?php namespace Flarum\Console;
 
-use Illuminate\Console\Command;
-use Illuminate\Foundation\Application;
+use Illuminate\Contracts\Container\Container;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Input\InputArgument;
 
 class GenerateExtensionCommand extends Command
 {
-
     /**
-     * The console command name.
-     *
-     * @var string
+     * @var Container
      */
-    protected $name = 'generate:extension';
+    protected $container;
 
-    /**
-     * The console command description.
-     *
-     * @var string
-     */
-    protected $description = 'Generate a Flarum extension skeleton.';
-
-    /**
-     * Create a new command instance.
-     *
-     * @return void
-     */
-    public function __construct(Application $app)
+    public function __construct(Container $container)
     {
-        parent::__construct();
+        $this->container = $container;
 
-        $this->app = $app;
+        parent::__construct();
+    }
+
+    protected function configure()
+    {
+        $this
+            ->setName('generate:extension')
+            ->setDescription("Generate a Flarum extension skeleton.");
     }
 
     /**
@@ -39,7 +30,7 @@ class GenerateExtensionCommand extends Command
      *
      * @return mixed
      */
-    public function fire()
+    protected function fire()
     {
         do {
             $vendor = $this->ask('Vendor name:');

src/Console/SeedCommand.php

@@ -1,58 +0,0 @@
-<?php namespace Flarum\Console;
-
-use Illuminate\Console\Command;
-use Symfony\Component\Console\Input\InputOption;
-use Symfony\Component\Console\Input\InputArgument;
-
-class SeedCommand extends Command
-{
-
-    /**
-     * The console command name.
-     *
-     * @var string
-     */
-    protected $name = 'seed';
-
-    /**
-     * The console command description.
-     *
-     * @var string
-     */
-    protected $description = 'Seed Flarum\'s database with fake data.';
-
-    /**
-     * Execute the console command.
-     *
-     * @return mixed
-     */
-    public function fire()
-    {
-        $this->call('db:seed', ['--class' => 'Flarum\Core\Seeders\UsersTableSeeder']);
-        $this->call('db:seed', ['--class' => 'Flarum\Core\Seeders\DiscussionsTableSeeder']);
-    }
-
-    /**
-     * Get the console command arguments.
-     *
-     * @return array
-     */
-    protected function getArguments()
-    {
-        return [
-            // ['example', InputArgument::REQUIRED, 'An example argument.'],
-        ];
-    }
-
-    /**
-     * Get the console command options.
-     *
-     * @return array
-     */
-    protected function getOptions()
-    {
-        return [
-            // ['example', null, InputOption::VALUE_OPTIONAL, 'An example option.', null],
-        ];
-    }
-}

src/Console/UpgradeCommand.php

@@ -0,0 +1,56 @@
+<?php namespace Flarum\Console;
+
+use Illuminate\Contracts\Container\Container;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class UpgradeCommand extends Command
+{
+    /**
+     * @var Container
+     */
+    protected $container;
+
+    public function __construct(Container $container)
+    {
+        $this->container = $container;
+
+        parent::__construct();
+    }
+
+    protected function configure()
+    {
+        $this
+            ->setName('upgrade')
+            ->setDescription("Run Flarum's upgrade script");
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function fire()
+    {
+        $this->info('Upgrading Flarum...');
+
+        $this->upgrade();
+
+        $this->info('DONE.');
+    }
+
+    protected function upgrade()
+    {
+        $this->container->bind('Illuminate\Database\Schema\Builder', function($container) {
+            return $container->make('Illuminate\Database\ConnectionInterface')->getSchemaBuilder();
+        });
+
+        $migrator = $this->container->make('Flarum\Migrations\Migrator');
+
+        $migrator->run(base_path('core/migrations'));
+
+        foreach ($migrator->getNotes() as $note) {
+            $this->info($note);
+        }
+    }
+}

src/Core/DatabaseServiceProvider.php

@@ -6,6 +6,7 @@ use Illuminate\Database\ConnectionResolver;
 use Illuminate\Database\Connectors\ConnectionFactory;
 use Illuminate\Database\Eloquent\Model;
 use PDO;
+use Flarum\Migrations\DatabaseMigrationRepository;
 
 class DatabaseServiceProvider extends ServiceProvider
 {
@@ -44,5 +45,10 @@ class DatabaseServiceProvider extends ServiceProvider
                 Model::setEventDispatcher($this->app->make('events'));
             });
         }
+
+
+        $this->app->singleton('Flarum\Migrations\MigrationRepositoryInterface', function ($app) {
+            return new DatabaseMigrationRepository($app['db'], 'migrations');
+        });
     }
 }

src/Install/Console/DataFromUser.php

@@ -43,6 +43,35 @@ class DataFromUser implements ProvidesData
         ];
     }
 
+    public function getSettings()
+    {
+        $baseUrl = rtrim($this->ask('Base URL:'), '/');
+        $title = $this->ask('Forum title:');
+
+        return [
+            'admin_url' => $baseUrl . '/admin',
+            'allow_post_editing' => 'reply',
+            'allow_renaming' => '10',
+            'allow_sign_up' => '1',
+            'api_url' => $baseUrl . '/api',
+            'base_url' => $baseUrl,
+            'custom_less' => '',
+            'default_locale' => 'en',
+            'default_route' => '/all',
+            'extensions_enabled' => '[]',
+            'forum_title' => $title,
+            'forum_description' => '',
+            'mail_driver' => 'mail',
+            'mail_from' => 'noreply@' . preg_replace('/^www\./i', '', parse_url($baseUrl, PHP_URL_HOST)),
+            'theme_colored_header' => '0',
+            'theme_dark_mode' => '0',
+            'theme_primary_color' => '#29415E',
+            'theme_secondary_color' => '#29415E',
+            'welcome_message' => 'This is beta software and you should not use it in production.',
+            'welcome_title' => 'Welcome to ' . $title,
+        ];
+    }
+
     protected function ask($question, $default = null)
     {
         $question = new Question("<question>$question</question> ", $default);

src/Install/Console/DefaultData.php

@@ -7,7 +7,7 @@ class DefaultData implements ProvidesData
         return [
             'driver'    => 'mysql',
             'host'      => 'localhost',
-            'database'  => 'flarum',
+            'database'  => 'flarum_console',
             'username'  => 'root',
             'password'  => 'root',
             'prefix'    => '',
@@ -22,4 +22,30 @@ class DefaultData implements ProvidesData
             'email'                 => 'admin@example.com',
         ];
     }
+
+    public function getSettings()
+    {
+        return [
+            'admin_url' => 'http://flarum.dev/admin',
+            'allow_post_editing' => 'reply',
+            'allow_renaming' => '10',
+            'allow_sign_up' => '1',
+            'api_url' => 'http://flarum.dev/api',
+            'base_url' => 'http://flarum.dev',
+            'custom_less' => '',
+            'default_locale' => 'en',
+            'default_route' => '/all',
+            'extensions_enabled' => '[]',
+            'forum_title' => 'Development Forum',
+            'forum_description' => '',
+            'mail_driver' => 'mail',
+            'mail_from' => 'noreply@flarum.dev',
+            'theme_colored_header' => '0',
+            'theme_dark_mode' => '0',
+            'theme_primary_color' => '#29415E',
+            'theme_secondary_color' => '#29415E',
+            'welcome_message' => 'This is beta software and you should not use it in production.',
+            'welcome_title' => 'Welcome to Development Forum',
+        ];
+    }
 }

src/Install/Console/InstallCommand.php

@@ -1,6 +1,10 @@
 <?php namespace Flarum\Install\Console;
 
 use Flarum\Console\Command;
+use Flarum\Core\Model;
+use Flarum\Core\Users\User;
+use Flarum\Core\Groups\Group;
+use Flarum\Core\Groups\Permission;
 use Illuminate\Contracts\Container\Container;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
@@ -23,10 +27,6 @@ class InstallCommand extends Command
     {
         $this->container = $container;
 
-        $this->container->bind('Illuminate\Database\Schema\Builder', function($container) {
-            return $container->make('Illuminate\Database\ConnectionInterface')->getSchemaBuilder();
-        });
-
         parent::__construct();
     }
 
@@ -72,7 +72,19 @@ class InstallCommand extends Command
 
         $this->runMigrations();
 
+        $this->writeSettings();
+
+        $this->container->register('Flarum\Core\CoreServiceProvider');
+
+        $resolver = $this->container->make('Illuminate\Database\ConnectionResolverInterface');
+        Model::setConnectionResolver($resolver);
+        Model::setEventDispatcher($this->container->make('events'));
+
+        $this->seedGroups();
+        $this->seedPermissions();
+
         $this->createAdminUser();
+
     }
 
     protected function storeConfiguration()
@@ -87,8 +99,8 @@ class InstallCommand extends Command
                 'database'  => $dbConfig['database'],
                 'username'  => $dbConfig['username'],
                 'password'  => $dbConfig['password'],
-                'charset'   => 'utf8',
-                'collation' => 'utf8_unicode_ci',
+                'charset'   => 'utf8mb4',
+                'collation' => 'utf8mb4_unicode_ci',
                 'prefix'    => $dbConfig['prefix'],
                 'strict'    => false
             ],
@@ -105,24 +117,80 @@ class InstallCommand extends Command
 
     protected function runMigrations()
     {
-        $migrationDir = base_path('core/migrations');
+        $this->container->bind('Illuminate\Database\Schema\Builder', function($container) {
+            return $container->make('Illuminate\Database\ConnectionInterface')->getSchemaBuilder();
+        });
 
-        $files = glob("$migrationDir/*_*.php") or [];
-        sort($files);
+        $migrator = $this->container->make('Flarum\Migrations\Migrator');
+        $migrator->getRepository()->createRepository();
 
-        foreach ($files as $file) {
-            require $file;
+        $migrator->run(base_path('core/migrations'));
 
-            $migrationClass = studly_case(substr(basename($file), 18));
-            $migrationClass = str_replace('.php', '', $migrationClass);
-            $migration = $this->container->make($migrationClass);
-
-            $this->info("Migrating $migrationClass");
-
-            $migration->up();
+        foreach ($migrator->getNotes() as $note) {
+            $this->info($note);
         }
     }
 
+    protected function writeSettings()
+    {
+        $data = $this->dataSource->getSettings();
+        $settings = $this->container->make('Flarum\Core\Settings\SettingsRepository');
+
+        $this->info('Writing default settings');
+
+        foreach ($data as $k => $v) {
+            $settings->set($k, $v);
+        }
+    }
+
+    protected function seedGroups()
+    {
+        Group::unguard();
+
+        $groups = [
+            ['Admin', 'Admins', '#B72A2A', 'wrench'],
+            ['Guest', 'Guests', null, null],
+            ['Member', 'Members', null, null],
+            ['Mod', 'Mods', '#80349E', 'bolt']
+        ];
+
+        foreach ($groups as $group) {
+            Group::create([
+                'name_singular' => $group[0],
+                'name_plural' => $group[1],
+                'color' => $group[2],
+                'icon' => $group[3]
+            ]);
+        }
+    }
+
+    protected function seedPermissions()
+    {
+        $permissions = [
+            // Guests can view the forum
+            [2, 'forum.view'],
+
+            // Members can create and reply to discussions
+            [3, 'forum.startDiscussion'],
+            [3, 'discussion.reply'],
+
+            // Moderators can edit + delete stuff
+            [4, 'discussion.delete'],
+            [4, 'discussion.deletePosts'],
+            [4, 'discussion.editPosts'],
+            [4, 'discussion.rename'],
+        ];
+
+        foreach ($permissions as &$permission) {
+            $permission = [
+                'group_id'   => $permission[0],
+                'permission' => $permission[1]
+            ];
+        }
+
+        Permission::insert($permissions);
+    }
+
     protected function createAdminUser()
     {
         $admin = $this->dataSource->getAdminUser();
@@ -130,7 +198,14 @@ class InstallCommand extends Command
 
         $this->info('Creating admin user '.$admin['username']);
 
-        $db->table('users')->insert($admin);
+        User::unguard();
+
+        $user = new User($admin);
+        $user->is_activated = 1;
+        $user->join_time = time();
+        $user->save();
+
+        $user->groups()->sync([1]);
     }
 
     /**

src/Install/Console/ProvidesData.php

@@ -5,4 +5,6 @@ interface ProvidesData
     public function getDatabaseConfiguration();
 
     public function getAdminUser();
+
+    public function getSettings();
 }

src/Migrations/DatabaseMigrationRepository.php

@@ -0,0 +1,157 @@
+<?php
+
+namespace Flarum\Migrations;
+
+use Illuminate\Database\ConnectionResolverInterface as Resolver;
+
+class DatabaseMigrationRepository implements MigrationRepositoryInterface
+{
+    /**
+     * The database connection resolver instance.
+     *
+     * @var \Illuminate\Database\ConnectionResolverInterface
+     */
+    protected $resolver;
+
+    /**
+     * The name of the migration table.
+     *
+     * @var string
+     */
+    protected $table;
+
+    /**
+     * The name of the database connection to use.
+     *
+     * @var string
+     */
+    protected $connection;
+
+    /**
+     * Create a new database migration repository instance.
+     *
+     * @param  \Illuminate\Database\ConnectionResolverInterface  $resolver
+     * @param  string  $table
+     * @return void
+     */
+    public function __construct(Resolver $resolver, $table)
+    {
+        $this->table = $table;
+        $this->resolver = $resolver;
+    }
+
+    /**
+     * Get the ran migrations.
+     *
+     * @return array
+     */
+    public function getRan($extension = null)
+    {
+        return $this->table()
+                ->where('extension', $extension)
+                ->orderBy('migration', 'asc')
+                ->lists('migration');
+    }
+
+    /**
+     * Log that a migration was run.
+     *
+     * @param string $file
+     * @param string $extension
+     * @return void
+     */
+    public function log($file, $extension = null)
+    {
+        $record = ['migration' => $file, 'extension' => $extension];
+
+        $this->table()->insert($record);
+    }
+
+    /**
+     * Remove a migration from the log.
+     *
+     * @param string $file
+     * @param string $extension
+     * @return void
+     */
+    public function delete($file, $extension = null)
+    {
+        $query = $this->table()->where('migration', $file);
+
+        if (is_null($extension)) {
+            $query->whereNull('extension');
+        } else {
+            $query->where('extension', $extension);
+        }
+
+        $query->delete();
+    }
+
+    /**
+     * Create the migration repository data store.
+     *
+     * @return void
+     */
+    public function createRepository()
+    {
+        $schema = $this->getConnection()->getSchemaBuilder();
+
+        $schema->create($this->table, function ($table) {
+            $table->string('migration');
+            $table->string('extension')->nullable();
+        });
+    }
+
+    /**
+     * Determine if the migration repository exists.
+     *
+     * @return bool
+     */
+    public function repositoryExists()
+    {
+        $schema = $this->getConnection()->getSchemaBuilder();
+
+        return $schema->hasTable($this->table);
+    }
+
+    /**
+     * Get a query builder for the migration table.
+     *
+     * @return \Illuminate\Database\Query\Builder
+     */
+    protected function table()
+    {
+        return $this->getConnection()->table($this->table);
+    }
+
+    /**
+     * Get the connection resolver instance.
+     *
+     * @return \Illuminate\Database\ConnectionResolverInterface
+     */
+    public function getConnectionResolver()
+    {
+        return $this->resolver;
+    }
+
+    /**
+     * Resolve the database connection instance.
+     *
+     * @return \Illuminate\Database\Connection
+     */
+    public function getConnection()
+    {
+        return $this->resolver->connection($this->connection);
+    }
+
+    /**
+     * Set the information source to gather data.
+     *
+     * @param  string  $name
+     * @return void
+     */
+    public function setSource($name)
+    {
+        $this->connection = $name;
+    }
+}

src/Migrations/Migration.php

@@ -1,4 +1,4 @@
-<?php namespace Flarum\Install;
+<?php namespace Flarum\Migrations;
 
 use Illuminate\Database\Schema\Builder;
 

src/Migrations/MigrationRepositoryInterface.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Flarum\Migrations;
+
+interface MigrationRepositoryInterface
+{
+    /**
+     * Get the ran migrations for the given extension.
+     *
+     * @return array
+     */
+    public function getRan($extension = null);
+
+    /**
+     * Log that a migration was run.
+     *
+     * @param string $file
+     * @param string $extension
+     * @return void
+     */
+    public function log($file, $extension = null);
+
+    /**
+     * Remove a migration from the log.
+     *
+     * @param string $file
+     * @param string $extension
+     * @return void
+     */
+    public function delete($file, $extension = null);
+
+    /**
+     * Create the migration repository data store.
+     *
+     * @return void
+     */
+    public function createRepository();
+
+    /**
+     * Determine if the migration repository exists.
+     *
+     * @return bool
+     */
+    public function repositoryExists();
+
+    /**
+     * Set the information source to gather data.
+     *
+     * @param  string  $name
+     * @return void
+     */
+    public function setSource($name);
+}

src/Migrations/Migrator.php

@@ -0,0 +1,322 @@
+<?php
+
+namespace Flarum\Migrations;
+
+use Illuminate\Support\Str;
+use Illuminate\Filesystem\Filesystem;
+use Illuminate\Database\ConnectionResolverInterface as Resolver;
+
+class Migrator
+{
+    /**
+     * The migration repository implementation.
+     *
+     * @var \Flarum\Migrations\MigrationRepositoryInterface
+     */
+    protected $repository;
+
+    /**
+     * The filesystem instance.
+     *
+     * @var \Illuminate\Filesystem\Filesystem
+     */
+    protected $files;
+
+    /**
+     * The connection resolver instance.
+     *
+     * @var \Illuminate\Database\ConnectionResolverInterface
+     */
+    protected $resolver;
+
+    /**
+     * The name of the default connection.
+     *
+     * @var string
+     */
+    protected $connection;
+
+    /**
+     * The notes for the current operation.
+     *
+     * @var array
+     */
+    protected $notes = [];
+
+    /**
+     * Create a new migrator instance.
+     *
+     * @param  \Flarum\Migrations\MigrationRepositoryInterface  $repository
+     * @param  \Illuminate\Database\ConnectionResolverInterface  $resolver
+     * @param  \Illuminate\Filesystem\Filesystem  $files
+     * @return void
+     */
+    public function __construct(MigrationRepositoryInterface $repository,
+                                Resolver $resolver,
+                                Filesystem $files)
+    {
+        $this->files = $files;
+        $this->resolver = $resolver;
+        $this->repository = $repository;
+    }
+
+    /**
+     * Run the outstanding migrations at a given path.
+     *
+     * @param  string  $path
+     * @param  string  $extension
+     * @return void
+     */
+    public function run($path, $extension = null)
+    {
+        $this->notes = [];
+
+        $files = $this->getMigrationFiles($path);
+
+        $ran = $this->repository->getRan($extension);
+
+        $migrations = array_diff($files, $ran);
+
+        $this->requireFiles($path, $migrations);
+
+        $this->runMigrationList($migrations, $extension);
+    }
+
+    /**
+     * Run an array of migrations.
+     *
+     * @param  array  $migrations
+     * @param  bool   $pretend
+     * @return void
+     */
+    public function runMigrationList($migrations, $extension)
+    {
+        // First we will just make sure that there are any migrations to run. If there
+        // aren't, we will just make a note of it to the developer so they're aware
+        // that all of the migrations have been run against this database system.
+        if (count($migrations) == 0) {
+            $this->note('<info>Nothing to migrate.</info>');
+
+            return;
+        }
+
+        // Once we have the array of migrations, we will spin through them and run the
+        // migrations "up" so the changes are made to the databases. We'll then log
+        // that the migration was run so we don't repeat it next time we execute.
+        foreach ($migrations as $file) {
+            $this->runUp($file, $extension);
+        }
+    }
+
+    /**
+     * Run "up" a migration instance.
+     *
+     * @param  string  $file
+     * @param  string  $extension
+     * @return void
+     */
+    protected function runUp($file, $extension)
+    {
+        // First we will resolve a "real" instance of the migration class from this
+        // migration file name. Once we have the instances we can run the actual
+        // command such as "up" or "down", or we can just simulate the action.
+        $migration = $this->resolve($file);
+
+        $migration->up();
+
+        // Once we have run a migrations class, we will log that it was run in this
+        // repository so that we don't try to run it next time we do a migration
+        // in the application. A migration repository keeps the migrate order.
+        $this->repository->log($file, $extension);
+
+        $this->note("<info>Migrated:</info> $file");
+    }
+
+    /**
+     * Rolls all of the currently applied migrations back.
+     *
+     * @param  bool  $pretend
+     * @return int
+     */
+    public function reset($path, $extension = null)
+    {
+        $this->notes = [];
+
+        $migrations = array_reverse($this->repository->getRan($extension));
+
+        $this->requireFiles($path, $migrations);
+
+        $count = count($migrations);
+
+        if ($count === 0) {
+            $this->note('<info>Nothing to rollback.</info>');
+        } else {
+            foreach ($migrations as $migration) {
+                $this->runDown($migration, $extension);
+            }
+        }
+
+        return $count;
+    }
+
+    /**
+     * Run "down" a migration instance.
+     *
+     * @param  string  $file
+     * @param  string  $extension
+     * @return void
+     */
+    protected function runDown($file, $extension = null)
+    {
+        // First we will get the file name of the migration so we can resolve out an
+        // instance of the migration. Once we get an instance we can either run a
+        // pretend execution of the migration or we can run the real migration.
+        $instance = $this->resolve($file);
+
+        $instance->down();
+
+        // Once we have successfully run the migration "down" we will remove it from
+        // the migration repository so it will be considered to have not been run
+        // by the application then will be able to fire by any later operation.
+        $this->repository->delete($file, $extension);
+
+        $this->note("<info>Rolled back:</info> $file");
+    }
+
+    /**
+     * Get all of the migration files in a given path.
+     *
+     * @param  string  $path
+     * @return array
+     */
+    public function getMigrationFiles($path)
+    {
+        $files = $this->files->glob($path.'/*_*.php');
+
+        // Once we have the array of files in the directory we will just remove the
+        // extension and take the basename of the file which is all we need when
+        // finding the migrations that haven't been run against the databases.
+        if ($files === false) {
+            return [];
+        }
+
+        $files = array_map(function ($file) {
+            return str_replace('.php', '', basename($file));
+        }, $files);
+
+        // Once we have all of the formatted file names we will sort them and since
+        // they all start with a timestamp this should give us the migrations in
+        // the order they were actually created by the application developers.
+        sort($files);
+
+        return $files;
+    }
+
+    /**
+     * Require in all the migration files in a given path.
+     *
+     * @param  string  $path
+     * @param  array   $files
+     * @return void
+     */
+    public function requireFiles($path, array $files)
+    {
+        foreach ($files as $file) {
+            $this->files->requireOnce($path.'/'.$file.'.php');
+        }
+    }
+
+    /**
+     * Resolve a migration instance from a file.
+     *
+     * @param  string  $file
+     * @return object
+     */
+    public function resolve($file)
+    {
+        $file = implode('_', array_slice(explode('_', $file), 4));
+
+        $class = Str::studly($file);
+
+        return app()->make($class);
+    }
+
+    /**
+     * Raise a note event for the migrator.
+     *
+     * @param  string  $message
+     * @return void
+     */
+    protected function note($message)
+    {
+        $this->notes[] = $message;
+    }
+
+    /**
+     * Get the notes for the last operation.
+     *
+     * @return array
+     */
+    public function getNotes()
+    {
+        return $this->notes;
+    }
+
+    /**
+     * Resolve the database connection instance.
+     *
+     * @param  string  $connection
+     * @return \Illuminate\Database\Connection
+     */
+    public function resolveConnection($connection)
+    {
+        return $this->resolver->connection($connection);
+    }
+
+    /**
+     * Set the default connection name.
+     *
+     * @param  string  $name
+     * @return void
+     */
+    public function setConnection($name)
+    {
+        if (!is_null($name)) {
+            $this->resolver->setDefaultConnection($name);
+        }
+
+        $this->repository->setSource($name);
+
+        $this->connection = $name;
+    }
+
+    /**
+     * Get the migration repository instance.
+     *
+     * @return \Illuminate\Database\Migrations\MigrationRepositoryInterface
+     */
+    public function getRepository()
+    {
+        return $this->repository;
+    }
+
+    /**
+     * Determine if the migration repository exists.
+     *
+     * @return bool
+     */
+    public function repositoryExists()
+    {
+        return $this->repository->repositoryExists();
+    }
+
+    /**
+     * Get the file system instance.
+     *
+     * @return \Illuminate\Filesystem\Filesystem
+     */
+    public function getFilesystem()
+    {
+        return $this->files;
+    }
+}

src/Support/ExtensionManager.php

@@ -3,6 +3,7 @@
 use Flarum\Support\ServiceProvider;
 use Flarum\Core\Settings\SettingsRepository;
 use Illuminate\Contracts\Container\Container;
+use Flarum\Migrations\Migrator;
 
 class ExtensionManager
 {
@@ -43,8 +44,7 @@ class ExtensionManager
 
             $class->install();
 
-            // run migrations
-            // vendor publish
+            $this->migrate($extension);
 
             $this->setEnabled($enabled);
         }
@@ -69,7 +69,24 @@ class ExtensionManager
 
         $class->uninstall();
 
-        // run migrations
+        $this->migrate($extension, false);
+    }
+
+    protected function migrate($extension, $up = true)
+    {
+        $migrationDir = base_path('../extensions/' . $extension . '/migrations');
+
+        $this->app->bind('Illuminate\Database\Schema\Builder', function($container) {
+            return $container->make('Illuminate\Database\ConnectionInterface')->getSchemaBuilder();
+        });
+
+        $migrator = $this->app->make('Flarum\Migrations\Migrator');
+
+        if ($up) {
+            $migrator->run($migrationDir, $extension);
+        } else {
+            $migrator->reset($migrationDir, $extension);
+        }
     }
 
     protected function getEnabled()