bug #85 Add support for composer-plugin-api v2 (Ayesh)

This PR was merged into the 1.2-dev branch.

Discussion
----------

Add support for composer-plugin-api v2

Composer version 2 has `composer-plugin-api` version 2, and this plugin attemts to support both API versions.

See [What's new in Composer 2](https://php.watch/articles/composer-2) and [UPGRADE-2.0](https://github.com/composer/composer/blob/master/UPGRADE-2.0.md#for-integrators-and-plugin-authors) for more changes in API.

 - Empty methods `\Symfony\Thanks\Thanks::deactivate()` and `\Symfony\Thanks\Thanks::uninstall()` are added to make it compatible both versions.
 - On Composer v2, `\Hirak\Prestissimo\CurlRemoteFilesystem` is not used in favor of Composer's native `\Composer\Util\HttpDownloader` which make multiple Curl connections.

Related: #84 and composer/composer#8726.

`thanks` 🙏

Commits
-------

7502bef Add support for composer-plugin-api v2

composer.json

@@ -11,7 +11,7 @@
     ],
     "require": {
         "php": "^5.5.9|^7.0.0",
-        "composer-plugin-api": "^1.0"
+        "composer-plugin-api": "^1.0|^2.0"
     },
     "autoload": {
         "psr-4": {

src/GitHubClient.php

@@ -18,6 +18,8 @@
 use Composer\Json\JsonFile;
 use Composer\Plugin\PluginEvents;
 use Composer\Plugin\PreFileDownloadEvent;
+use Composer\Util\HttpDownloader;
+use Composer\Util\RemoteFilesystem;
 use Hirak\Prestissimo\CurlRemoteFilesystem;
 
 /**
@@ -100,7 +102,12 @@ public function __construct(Composer $composer, IOInterface $io)
     {
         $this->composer = $composer;
         $this->io = $io;
-        $this->rfs = Factory::createRemoteFilesystem($io, $composer->getConfig());
+
+        if (class_exists(HttpDownloader::class)) {
+            $this->rfs = new HttpDownloader($io, $composer->getConfig())
+        } else {
+            $this->rfs = Factory::createRemoteFilesystem($io, $composer->getConfig());
+        }
     }
 
     public function getRepositories(array &$failures = null, $withFundingLinks = false)
@@ -182,19 +189,28 @@ public function call($graphql, array &$failures = [])
 
         if ($eventDispatcher = $this->composer->getEventDispatcher()) {
             $preFileDownloadEvent = new PreFileDownloadEvent(PluginEvents::PRE_FILE_DOWNLOAD, $rfs, 'https://api.github.com/graphql');
+
             $eventDispatcher->dispatch($preFileDownloadEvent->getName(), $preFileDownloadEvent);
-            if (!$preFileDownloadEvent->getRemoteFilesystem() instanceof CurlRemoteFilesystem) {
+
+            if ($rfs instanceof RemoteFilesystem && !$preFileDownloadEvent->getRemoteFilesystem() instanceof CurlRemoteFilesystem) {
                 $rfs = $preFileDownloadEvent->getRemoteFilesystem();
             }
         }
 
-        $result = $rfs->getContents('github.com', 'https://api.github.com/graphql', false, [
+        $options = [
             'http' => [
                 'method' => 'POST',
                 'content' => json_encode(['query' => $graphql]),
                 'header' => ['Content-Type: application/json'],
             ],
-        ]);
+        ];
+
+        if ($rfs instanceof HttpDownloader) {
+            $result = $rfs->get('https://api.github.com/graphql', $options);
+        } else {
+            $result = $rfs->getContents('github.com', 'https://api.github.com/graphql', false, $options);
+        }
+
         $result = json_decode($result, true);
 
         if (isset($result['errors'][0]['message'])) {

src/Thanks.php

@@ -115,4 +115,18 @@ public static function getSubscribedEvents()
             ScriptEvents::POST_UPDATE_CMD => 'displayReminder',
         ];
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deactivate(Composer $composer, IOInterface $io)
+    {
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function uninstall(Composer $composer, IOInterface $io)
+    {
+    }
 }