Include task scheduler in core

composer.json

@@ -25,10 +25,12 @@
         "components/font-awesome": "^5.14.0",
         "dflydev/fig-cookies": "^3.0.0",
         "doctrine/dbal": "^2.7",
+        "dragonmantank/cron-expression": "^3.1.0",
         "franzl/whoops-middleware": "^2.0.0",
         "illuminate/bus": "^8.0",
         "illuminate/cache": "^8.0",
         "illuminate/config": "^8.0",
+        "illuminate/console": "^8.0",
         "illuminate/container": "^8.0",
         "illuminate/contracts": "^8.0",
         "illuminate/database": "^8.0",

src/Console/ConsoleServiceProvider.php

@@ -14,6 +14,9 @@
 use Flarum\Foundation\AbstractServiceProvider;
 use Flarum\Foundation\Console\CacheClearCommand;
 use Flarum\Foundation\Console\InfoCommand;
+use Illuminate\Console\Scheduling\Schedule as LaravelSchedule;
+use Illuminate\Console\Scheduling\ScheduleListCommand;
+use Illuminate\Console\Scheduling\ScheduleRunCommand;
 
 class ConsoleServiceProvider extends AbstractServiceProvider
 {
@@ -22,13 +25,42 @@ class ConsoleServiceProvider extends AbstractServiceProvider
      */
     public function register()
     {
+        // Used by Laravel to proxy artisan commands to its binary.
+        // Flarum uses a similar binary, but it's called flarum.
+        if (! defined('ARTISAN_BINARY')) {
+            define('ARTISAN_BINARY', 'flarum');
+        }
+
+        $this->container->singleton(LaravelSchedule::class, function () {
+            return $this->container->make(Schedule::class);
+        });
+
         $this->container->singleton('flarum.console.commands', function () {
             return [
                 CacheClearCommand::class,
                 InfoCommand::class,
                 MigrateCommand::class,
                 ResetCommand::class,
+                ScheduleListCommand::class,
+                ScheduleRunCommand::class
             ];
         });
+
+        $this->container->singleton('flarum.console.scheduled', function () {
+            return [];
+        });
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function boot()
+    {
+        $schedule = $this->container->make(LaravelSchedule::class);
+
+        foreach ($this->container->make('flarum.console.scheduled') as $scheduled) {
+            $event = $schedule->command($scheduled['command'], $scheduled['args']);
+            $scheduled['callback']($event);
+        }
     }
 }

src/Console/Schedule.php

@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Console;
+
+use Flarum\Foundation\Config;
+use Illuminate\Console\Scheduling\Schedule as LaravelSchedule;
+use Illuminate\Support\Collection;
+
+class Schedule extends LaravelSchedule
+{
+    public function dueEvents($container)
+    {
+        return (new Collection($this->events))->filter->isDue(new FakeApp($container));
+    }
+}
+
+class FakeApp
+{
+    public function __construct($container)
+    {
+        $this->config = $container->make(Config::class);
+    }
+
+    public function isDownForMaintenance()
+    {
+        return $this->config->inMaintenanceMode();
+    }
+
+    public function environment()
+    {
+        return '';
+    }
+}

src/Extend/Console.php

@@ -15,6 +15,7 @@
 class Console implements ExtenderInterface
 {
     protected $addCommands = [];
+    protected $scheduled = [];
 
     /**
      * Add a command to the console.
@@ -28,10 +29,38 @@ public function command($command)
         return $this;
     }
 
+    /**
+     * Schedule a command to run on an interval.
+     *
+     * @param string $command ::class attribute of command class, which must extend Flarum\Console\AbstractCommand
+     * @param callable|string $callback
+     *
+     * The callback can be a closure or invokable class, and should accept:
+     * - \Illuminate\Console\Scheduling\Event $event
+     *
+     * The callback should apply relevant methods to $event, and does not need to return anything.
+     *
+     * @see https://laravel.com/api/8.x/Illuminate/Console/Scheduling/Event.html
+     * @see https://laravel.com/docs/8.x/scheduling#schedule-frequency-options
+     * for more information on available methods and what they do.
+     *
+     * @param array $args An array of args to call the command with.
+     */
+    public function schedule(string $command, $callback, $args = [])
+    {
+        $this->scheduled[] = compact('args', 'callback', 'command');
+
+        return $this;
+    }
+
     public function extend(Container $container, Extension $extension = null)
     {
         $container->extend('flarum.console.commands', function ($existingCommands) {
             return array_merge($existingCommands, $this->addCommands);
         });
+
+        $container->extend('flarum.console.scheduled', function ($existingScheduled) {
+            return array_merge($existingScheduled, $this->scheduled);
+        });
     }
 }

src/Queue/QueueServiceProvider.php

@@ -14,6 +14,7 @@
 use Flarum\Foundation\ErrorHandling\Registry;
 use Flarum\Foundation\ErrorHandling\Reporter;
 use Flarum\Foundation\Paths;
+use Illuminate\Contracts\Cache\Factory as CacheFactory;
 use Illuminate\Contracts\Debug\ExceptionHandler as ExceptionHandling;
 use Illuminate\Contracts\Queue\Factory;
 use Illuminate\Contracts\Queue\Queue;
@@ -82,7 +83,7 @@ function () use ($config) {
 
         // Bind a simple cache manager that returns the cache store.
         $this->container->singleton('cache', function ($container) {
-            return new class($container) {
+            return new class($container) implements CacheFactory {
                 public function __construct($container)
                 {
                     $this->container = $container;
@@ -93,6 +94,13 @@ public function driver()
                     return $this->container['cache.store'];
                 }
 
+                // We have to define this explicitly
+                // so that we implement the interface.
+                public function store($name = null)
+                {
+                    return $this->__call($name, null);
+                }
+
                 public function __call($name, $arguments)
                 {
                     return call_user_func_array([$this->driver(), $name], $arguments);

src/helpers.php

@@ -9,6 +9,7 @@
 
 use Flarum\Foundation\Paths;
 use Illuminate\Container\Container;
+use Illuminate\Contracts\Config\Repository;
 
 if (! function_exists('resolve')) {
     /**
@@ -24,7 +25,6 @@ function resolve($name, $parameters = [])
     }
 }
 
-
 // The following are all deprecated perpetually.
 // They are needed by some laravel components we use (e.g. task scheduling)
 // They should NOT be used in extension code.
@@ -47,7 +47,7 @@ function app($make = null, $parameters = [])
     }
 }
 
-if (!function_exists('base_path')) {
+if (! function_exists('base_path')) {
     /**
      * @deprecated perpetually.
      *
@@ -62,7 +62,7 @@ function base_path($path = '')
     }
 }
 
-if (!function_exists('public_path')) {
+if (! function_exists('public_path')) {
     /**
      * @deprecated perpetually.
      *
@@ -77,7 +77,7 @@ function public_path($path = '')
     }
 }
 
-if (!function_exists('storage_path')) {
+if (! function_exists('storage_path')) {
     /**
      * @deprecated perpetually.
      *
@@ -108,3 +108,13 @@ function event($event, $payload = [], $halt = false)
         return resolve('events')->dispatch($event, $payload, $halt);
     }
 }
+
+if (! function_exists('config')) {
+    /**
+     * @deprecated do not use, will be transferred to flarum/laravel-helpers.
+     */
+    function config(string $key, $default = null)
+    {
+        return resolve(Repository::class)->get($key, $default);
+    }
+}

tests/integration/extenders/ConsoleTest.php

@@ -43,6 +43,37 @@ public function custom_command_exists_when_added()
 
         $this->assertEquals('Custom Command.', $this->runCommand($input));
     }
+
+    /**
+     * @test
+     */
+    public function scheduled_command_doesnt_exist_by_default()
+    {
+        $input = [
+            'command' => 'schedule:list'
+        ];
+
+        $this->assertStringNotContainsString('cache:clear', $this->runCommand($input));
+    }
+
+    /**
+     * @test
+     */
+    public function scheduled_command_exists_when_added()
+    {
+        $this->extend(
+            (new Extend\Console())
+                ->schedule('cache:clear', function ($event) {
+                    $event->everyMinute();
+                })
+        );
+
+        $input = [
+            'command' => 'schedule:list'
+        ];
+
+        $this->assertStringContainsString('cache:clear', $this->runCommand($input));
+    }
 }
 
 class CustomCommand extends AbstractCommand