feat: implement getPullRequestFiles method

src/VCS/Adapter.php

@@ -150,6 +150,16 @@ abstract public function getPullRequestFromBranch(string $owner, string $reposit
      */
     abstract public function getPullRequest(string $owner, string $repositoryName, int $pullRequestNumber): array;
 
+    /**
+     * Get files changed in a pull request
+     *
+     * @param string $owner Owner name of the repository
+     * @param string $repositoryName Name of the repository
+     * @param int $pullRequestNumber The pull request number
+     * @return array<mixed> List of files changed in the pull request
+     */
+    abstract public function getPullRequestFiles(string $owner, string $repositoryName, int $pullRequestNumber): array;
+
     /**
      * Add Comment to Pull Request
      *

src/VCS/Adapter/Git/GitHub.php

@@ -670,6 +670,38 @@ public function getPullRequest(string $owner, string $repositoryName, int $pullR
         return $response['body'] ?? [];
     }
 
+    /**
+     * Get files changed in a pull request
+     *
+     * @return array<mixed> List of files changed in the pull request
+     */
+    public function getPullRequestFiles(string $owner, string $repositoryName, int $pullRequestNumber): array
+    {
+        $allFiles = [];
+        $perPage = 30;
+        $currentPage = 1;
+
+        while (true) {
+            $url = "/repos/{$owner}/{$repositoryName}/pulls/{$pullRequestNumber}/files";
+
+            $response = $this->call(self::METHOD_GET, $url, ['Authorization' => "Bearer $this->accessToken"], [
+                'per_page' => $perPage,
+                'page' => $currentPage,
+            ]);
+
+            $files = $response['body'] ?? [];
+            $allFiles = array_merge($allFiles, $files);
+
+            if (\count($files) < $perPage) {
+                break;
+            }
+
+            $currentPage++;
+        }
+
+        return $allFiles;
+    }
+
     /**
      * Get latest opened pull request with specific base branch
      * @return array<mixed>

src/VCS/Adapter/Git/Gitea.php

@@ -651,6 +651,39 @@ public function getPullRequest(string $owner, string $repositoryName, int $pullR
         return $response['body'] ?? [];
     }
 
+    /**
+     * Get files changed in a pull request
+     *
+     * @return array<mixed> List of files changed in the pull request
+     */
+    public function getPullRequestFiles(string $owner, string $repositoryName, int $pullRequestNumber): array
+    {
+        $allFiles = [];
+        $limit = 30;
+        $maxPages = 100;
+
+        for ($currentPage = 1; $currentPage <= $maxPages; $currentPage++) {
+            $url = "/repos/{$owner}/{$repositoryName}/pulls/{$pullRequestNumber}/files?page={$currentPage}&limit={$limit}";
+
+            $response = $this->call(self::METHOD_GET, $url, ['Authorization' => "token $this->accessToken"]);
+
+            $responseHeaders = $response['headers'] ?? [];
+            $responseHeadersStatusCode = $responseHeaders['status-code'] ?? 0;
+            if ($responseHeadersStatusCode >= 400) {
+                throw new Exception("Failed to get pull request files: HTTP {$responseHeadersStatusCode}");
+            }
+
+            $files = $response['body'] ?? [];
+            $allFiles = array_merge($allFiles, $files);
+
+            if (\count($files) < $limit) {
+                break;
+            }
+        }
+
+        return $allFiles;
+    }
+
     public function getPullRequestFromBranch(string $owner, string $repositoryName, string $branch): array
     {
 

tests/VCS/Adapter/GitHubTest.php

@@ -355,6 +355,21 @@ public function testGetPullRequest(): void
         $this->assertSame($repositoryName, $result['base']['repo']['name']);
     }
 
+    public function testGetPullRequestFiles(): void
+    {
+        $owner = 'vermakhushboo';
+        $repositoryName = 'basic-js-crud';
+        $pullRequestNumber = 1;
+
+        $result = $this->vcsAdapter->getPullRequestFiles($owner, $repositoryName, $pullRequestNumber);
+
+        $this->assertIsArray($result);
+        $this->assertNotEmpty($result);
+
+        $filenames = array_column($result, 'filename');
+        $this->assertContains('README.md', $filenames);
+    }
+
     public function testGenerateCloneCommand(): void
     {
         \exec('rm -rf /tmp/clone-branch');

tests/VCS/Adapter/GiteaTest.php

@@ -480,6 +480,37 @@ public function testGetPullRequest(): void
         $this->vcsAdapter->deleteRepository(static::$owner, $repositoryName);
     }
 
+    public function testGetPullRequestFiles(): void
+    {
+        $repositoryName = 'test-get-pull-request-files-' . \uniqid();
+        $this->vcsAdapter->createRepository(self::$owner, $repositoryName, false);
+
+        $this->vcsAdapter->createFile(self::$owner, $repositoryName, 'README.md', '# Test');
+        $this->vcsAdapter->createBranch(self::$owner, $repositoryName, 'feature-branch', static::$defaultBranch);
+        $this->vcsAdapter->createFile(self::$owner, $repositoryName, 'feature.txt', 'feature content', 'Add feature', 'feature-branch');
+
+        $pr = $this->vcsAdapter->createPullRequest(
+            self::$owner,
+            $repositoryName,
+            'Test PR Files',
+            'feature-branch',
+            static::$defaultBranch
+        );
+
+        $prNumber = $pr['number'] ?? 0;
+        $this->assertGreaterThan(0, $prNumber);
+
+        $result = $this->vcsAdapter->getPullRequestFiles(self::$owner, $repositoryName, $prNumber);
+
+        $this->assertIsArray($result);
+        $this->assertNotEmpty($result);
+
+        $filenames = array_column($result, 'filename');
+        $this->assertContains('feature.txt', $filenames);
+
+        $this->vcsAdapter->deleteRepository(self::$owner, $repositoryName);
+    }
+
     public function testGetPullRequestWithInvalidNumber(): void
     {
         $repositoryName = 'test-get-pull-request-invalid-' . \uniqid();

tests/VCS/Base.php

@@ -32,6 +32,8 @@ abstract public function testGetComment(): void;
 
     abstract public function testGetPullRequest(): void;
 
+    abstract public function testGetPullRequestFiles(): void;
+
     abstract public function testGetRepositoryTree(): void;
 
     /** @return array<mixed> */