From ffb8bb49395222fd0aca8c4bd8ca6948613504e7 Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.uk>
Date: Wed, 9 Jan 2019 10:59:26 +0000
Subject: [PATCH 1/5] Initial commit

---
 autowire_example.info.yml      |  3 +++
 autowire_example.module        |  9 +++++++++
 autowire_example.services.yml  |  5 +++++
 src/Service/ExampleService.php | 29 +++++++++++++++++++++++++++++
 4 files changed, 46 insertions(+)
 create mode 100644 autowire_example.info.yml
 create mode 100644 autowire_example.module
 create mode 100644 autowire_example.services.yml
 create mode 100644 src/Service/ExampleService.php

diff --git a/autowire_example.info.yml b/autowire_example.info.yml
new file mode 100644
index 0000000..ab2bd93
--- /dev/null
+++ b/autowire_example.info.yml
@@ -0,0 +1,3 @@
+name: Foo
+type: module
+core: 8.x
diff --git a/autowire_example.module b/autowire_example.module
new file mode 100644
index 0000000..67b1b15
--- /dev/null
+++ b/autowire_example.module
@@ -0,0 +1,9 @@
+<?php
+
+/**
+ * Implements hook_preprocess_HOOK().
+ */
+function autowire_example_preprocess_html() {
+  $service = \Drupal::service('autowire_example.test');
+  $service->__invoke();
+}
diff --git a/autowire_example.services.yml b/autowire_example.services.yml
new file mode 100644
index 0000000..6a1bfc2
--- /dev/null
+++ b/autowire_example.services.yml
@@ -0,0 +1,5 @@
+services:
+  autowire_example.test:
+    class: Drupal\autowire_example\Service\ExampleService
+    arguments:
+      - '@current_user'
diff --git a/src/Service/ExampleService.php b/src/Service/ExampleService.php
new file mode 100644
index 0000000..70f7616
--- /dev/null
+++ b/src/Service/ExampleService.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace Drupal\autowire_example\Service;
+
+use Drupal\Core\Session\AccountProxyInterface;
+
+class ExampleService {
+
+  /**
+   * @var \Drupal\Core\Session\AccountProxyInterface
+   */
+  private $currentUser;
+
+  /**
+   * Bar constructor.
+   *
+   * @param \Drupal\Core\Session\AccountProxyInterface $current_user
+   *   The current user.
+   */
+  public function __construct(AccountProxyInterface $current_user) {
+    $this->currentUser = $current_user;
+  }
+
+  public function __invoke() {
+    dump($this->currentUser->id());
+    die;
+  }
+
+}

From 899c89645555c46400801beecffdfac80a57c0cc Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.uk>
Date: Wed, 9 Jan 2019 14:13:07 +0000
Subject: [PATCH 2/5] Initial commit

---
 README.md                            |  4 +++
 autowire_example.info.yml            |  5 +++
 autowire_example.routing.yml         |  6 ++++
 autowire_example.services.yml        |  6 ++++
 src/Controller/ExampleController.php | 48 ++++++++++++++++++++++++++++
 src/Service/UserCounter.php          | 46 ++++++++++++++++++++++++++
 6 files changed, 115 insertions(+)
 create mode 100644 README.md
 create mode 100644 autowire_example.info.yml
 create mode 100644 autowire_example.routing.yml
 create mode 100644 autowire_example.services.yml
 create mode 100644 src/Controller/ExampleController.php
 create mode 100644 src/Service/UserCounter.php

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..4f9e9bc
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+# Autowire Example
+
+An example module to demonstrate autowiring service classes in Drupal 8, as
+well as how to define Controllers as Services.
diff --git a/autowire_example.info.yml b/autowire_example.info.yml
new file mode 100644
index 0000000..a14949b
--- /dev/null
+++ b/autowire_example.info.yml
@@ -0,0 +1,5 @@
+name: 'Autowire Example'
+type: module
+description: 'An example module to demonstrate autowiring in Drupal 8.'
+core: 8.x
+package: 'Example modules'
diff --git a/autowire_example.routing.yml b/autowire_example.routing.yml
new file mode 100644
index 0000000..7883ef4
--- /dev/null
+++ b/autowire_example.routing.yml
@@ -0,0 +1,6 @@
+autowire_example.user_count:
+  path: '/user-count'
+  defaults:
+    _controller: 'Drupal\autowire_example\Controller\ExampleController::__invoke'
+  requirements:
+    _access: 'TRUE'
diff --git a/autowire_example.services.yml b/autowire_example.services.yml
new file mode 100644
index 0000000..edab41d
--- /dev/null
+++ b/autowire_example.services.yml
@@ -0,0 +1,6 @@
+services:
+  Drupal\autowire_example\Service\UserCounter:
+    autowire: true
+
+  Drupal\autowire_example\Controller\ExampleController:
+    autowire: true
diff --git a/src/Controller/ExampleController.php b/src/Controller/ExampleController.php
new file mode 100644
index 0000000..b945018
--- /dev/null
+++ b/src/Controller/ExampleController.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace Drupal\autowire_example\Controller;
+
+use Drupal\autowire_example\Service\UserCounter;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+
+/**
+ * An example controller.
+ */
+class ExampleController {
+
+  use StringTranslationTrait;
+
+  /**
+   * The user counter service.
+   *
+   * @var \Drupal\autowire_example\Service\UserCounter
+   */
+  private $userCounter;
+
+  /**
+   * ExampleController constructor.
+   *
+   * @param \Drupal\autowire_example\Service\UserCounter $user_counter
+   *   The user counter service.
+   */
+  public function __construct(UserCounter $user_counter) {
+    $this->userCounter = $user_counter;
+  }
+
+  /**
+   * Display the username of the current user.
+   *
+   * @return array
+   *   A render array.
+   */
+  public function __invoke() {
+    return [
+      '#markup' => $this->formatPlural(
+        number_format($this->userCounter->getActiveUserCount()),
+        'This site has 1 active user.',
+        'This site has @count active users.'
+      )
+    ];
+  }
+  
+}
diff --git a/src/Service/UserCounter.php b/src/Service/UserCounter.php
new file mode 100644
index 0000000..d4edc15
--- /dev/null
+++ b/src/Service/UserCounter.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Drupal\autowire_example\Service;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+
+/**
+ * A service to count users.
+ */
+class UserCounter {
+
+  /**
+   * The user storage instance.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  private $userStorage;
+
+  /**
+   * UserCounter constructor.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager.
+   *
+   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
+   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
+   */
+  public function __construct(EntityTypeManagerInterface $entity_type_manager) {
+    $this->userStorage = $entity_type_manager->getStorage('user');
+  }
+
+  /**
+   * Count the active users.
+   *
+   * @return integer
+   *   The number of active users.
+   */
+  public function getActiveUserCount() {
+    return (int) $this->userStorage
+      ->getQuery()
+      ->condition('status', 1)
+      ->count()
+      ->execute();
+  }
+
+}

From d5e210109dba6345800deb7fb418237c61c4eaaf Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.uk>
Date: Wed, 9 Jan 2019 23:39:35 +0000
Subject: [PATCH 3/5] Add entity_type.manager alias to services

---
 autowire_example.services.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/autowire_example.services.yml b/autowire_example.services.yml
index edab41d..5ab82c0 100644
--- a/autowire_example.services.yml
+++ b/autowire_example.services.yml
@@ -1,4 +1,7 @@
 services:
+  Drupal\Core\Entity\EntityTypeManagerInterface:
+    alias: entity_type.manager
+
   Drupal\autowire_example\Service\UserCounter:
     autowire: true
 

From 9c3872bf783ab772808baab7c675390b0201b2f0 Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.uk>
Date: Wed, 9 Jan 2019 23:39:42 +0000
Subject: [PATCH 4/5] Add UserCounterTest

---
 tests/src/Kernel/Service/UserCounterTest.php | 50 ++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 tests/src/Kernel/Service/UserCounterTest.php

diff --git a/tests/src/Kernel/Service/UserCounterTest.php b/tests/src/Kernel/Service/UserCounterTest.php
new file mode 100644
index 0000000..92fa881
--- /dev/null
+++ b/tests/src/Kernel/Service/UserCounterTest.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Drupal\Tests\autowire_example\Kernel\Service;
+
+use Drupal\autowire_example\Service\UserCounter;
+use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;
+
+/**
+ * Test the user counter service.
+ */
+class UserCounterTest extends EntityKernelTestBase {
+
+  /**
+   * The user counter service.
+   *
+   * @var \Drupal\autowire_example\Service\UserCounter
+   */
+  private $userCounter;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['autowire_example'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->userCounter = $this->container->get(UserCounter::class);
+  }
+
+  /** @test */
+  public function active_users_are_counted() {
+    $this->createUser(['status' => 1]);
+    $this->createUser(['status' => 1]);
+
+    $this->assertEquals(2, $this->userCounter->getActiveUserCount());
+  }
+
+  /** @test */
+  public function blocked_users_are_not_counted() {
+    $this->createUser(['status' => 1]);
+    $this->createUser(['status' => 0]);
+
+    $this->assertEquals(1, $this->userCounter->getActiveUserCount());
+  }
+
+}

From c936d36e1318853caa12517124cd622b42596fe6 Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.uk>
Date: Wed, 9 Jan 2019 23:44:43 +0000
Subject: [PATCH 5/5] Re-order services

---
 autowire_example.services.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/autowire_example.services.yml b/autowire_example.services.yml
index 5ab82c0..3582c33 100644
--- a/autowire_example.services.yml
+++ b/autowire_example.services.yml
@@ -2,8 +2,8 @@ services:
   Drupal\Core\Entity\EntityTypeManagerInterface:
     alias: entity_type.manager
 
-  Drupal\autowire_example\Service\UserCounter:
-    autowire: true
-
   Drupal\autowire_example\Controller\ExampleController:
     autowire: true
+
+  Drupal\autowire_example\Service\UserCounter:
+    autowire: true