Adding PullRequestApi (#113)

composer.json

@@ -9,7 +9,7 @@
         "doctrine/doctrine-migrations-bundle": "^3.0",
         "doctrine/orm": "^2.7",
         "incenteev/composer-parameter-handler": "~2.0",
-        "knplabs/github-api": "^2.1",
+        "knplabs/github-api": "^2.16",
         "nyholm/psr7": "^1.3",
         "sensio/framework-extra-bundle": "^5.1",
         "symfony/console": "^5.1",

src/Api/PullRequest/GithubPullRequestApi.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Api\PullRequest;
+
+use App\Model\Repository;
+use Github\Api\PullRequest;
+use Github\Api\Repo;
+
+/**
+ * @author Tobias Nyholm <[email protected]>
+ */
+class GithubPullRequestApi implements PullRequestApi
+{
+    /**
+     * @var Repo
+     */
+    private $github;
+    private $botUsername;
+    private $pullRequest;
+
+    public function __construct(Repo $github, PullRequest $pullRequest, string $botUsername)
+    {
+        $this->github = $github;
+        $this->botUsername = $botUsername;
+        $this->pullRequest = $pullRequest;
+    }
+
+    public function show(Repository $repository, $number): array
+    {
+        return (array) $this->pullRequest->show($repository->getVendor(), $repository->getName(), $number);
+    }
+
+    /**
+     * Trigger start of a "find reviewer" job. The job runs on github actions and will comment on the PR.
+     */
+    public function findReviewer(Repository $repository, $number, string $type)
+    {
+        $this->github->dispatch($this->botUsername, 'carsonbot', 'find-reviewer', [
+            'repository' => $repository->getFullName(),
+            'pull_request_number' => $number,
+            'type' => $type,
+        ]);
+    }
+}

src/Api/PullRequest/NullPullRequestApi.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Api\PullRequest;
+
+use App\Model\Repository;
+
+/**
+ * @author Tobias Nyholm <[email protected]>
+ */
+class NullPullRequestApi implements PullRequestApi
+{
+    public function show(Repository $repository, $number): array
+    {
+        return [];
+    }
+
+    public function findReviewer(Repository $repository, $number, string $type)
+    {
+    }
+}

src/Api/PullRequest/PullRequestApi.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Api\PullRequest;
+
+use App\Model\Repository;
+
+/**
+ * Actions that are specific to pull requests.
+ * Actions like comment/close can be performed using the IssueApi.
+ *
+ * @author Tobias Nyholm <[email protected]>
+ */
+interface PullRequestApi
+{
+    public function show(Repository $repository, $number): array;
+
+    public function findReviewer(Repository $repository, $number, string $type);
+}