Fix crash when package is not listed on Packagist

Author: SteveDesmond-ca

README.md

@@ -45,6 +45,10 @@ Arguments:
 - `path to project`: required, directory containing `composer.json` and `composer.lock` files
 - `-q`: optional, quiet mode will only output libraries which are not up-to-date (that is, where "Libyears Behind" > 0)
 
+### Limitations
+
+- Currently only packages listed on Packagist are supported (feel free to submit a PR for issue #1)
+
 ## Contributing
 
 Please be sure to read and follow ecoAPM's [Contribution Guidelines](CONTRIBUTING.md) when submitting issues or pull requests.

src/Factory.php

@@ -3,20 +3,17 @@
 namespace LibYear;
 
 use GuzzleHttp\Client;
-use LibYear\Calculator;
-use LibYear\ComposerFile;
-use LibYear\FileSystem;
-use LibYear\PackagistAPI;
+use function cli\err;
 
 class Factory
 {
-    public static function App()
-    {
+    public static function App(): App
+	{
         $fs = new FileSystem();
         $file = new ComposerFile($fs);
 
         $http = new Client();
-        $api = new PackagistAPI($http);
+        $api = new PackagistAPI($http, STDERR);
 
         $calculator = new Calculator($file, $api);
         return new App($calculator, STDOUT);

src/PackagistAPI.php

@@ -3,19 +3,34 @@
 namespace LibYear;
 
 use GuzzleHttp\ClientInterface;
+use GuzzleHttp\Exception\GuzzleException;
 
 class PackagistAPI
 {
-    private ClientInterface $http_client;
+	private ClientInterface $http_client;
 
-    public function __construct(ClientInterface $http_client)
-    {
-        $this->http_client = $http_client;
-    }
+	/** @var resource */
+	private $stderr;
 
-    public function getPackageInfo(string $package): array
-    {
-        $response = $this->http_client->request('GET', "https://repo.packagist.org/packages/{$package}.json");
-        return json_decode($response->getBody()->getContents(), true) ?? [];
-    }
+	/**
+	 * @param ClientInterface $http_client
+	 * @param resource $stderr
+	 */
+	public function __construct(ClientInterface $http_client, $stderr)
+	{
+		$this->http_client = $http_client;
+		$this->stderr = $stderr;
+	}
+
+	public function getPackageInfo(string $package): array
+	{
+		try {
+			$response = $this->http_client->request('GET', "https://repo.packagist.org/packages/{$package}.json");
+			return json_decode($response->getBody()->getContents(), true) ?? [];
+
+		} catch (GuzzleException) {
+			fwrite($this->stderr, "Could not find info for {$package} on Packagist\n");
+			return [];
+		}
+	}
 }

tests/PackagistAPITest.php

@@ -19,12 +19,13 @@ public function testCallsCorrectURL()
         //arrange
         $http_client = Mockery::mock(ClientInterface::class, [
             'request' => Mockery::mock(ResponseInterface::class, [
+				'getStatusCode' => 200,
                 'getBody' => Mockery::mock(StreamInterface::class, [
                     'getContents' => json_encode(['test_field' => 'test value'])
                 ])
             ])
         ]);
-        $api = new PackagistAPI($http_client);
+        $api = new PackagistAPI($http_client, STDERR);
 
         //act
         $package_info = $api->getPackageInfo('vendor_name/package_name');
@@ -38,12 +39,13 @@ public function testCanGetPackageInfo()
         //arrange
         $http_client = Mockery::mock(ClientInterface::class, [
             'request' => Mockery::mock(ResponseInterface::class, [
-                'getBody' => Mockery::mock(StreamInterface::class, [
+				'getStatusCode' => 200,
+				'getBody' => Mockery::mock(StreamInterface::class, [
                     'getContents' => json_encode(['test_field' => 'test value'])
                 ])
             ])
         ]);
-        $api = new PackagistAPI($http_client);
+        $api = new PackagistAPI($http_client, STDERR);
 
         //act
         $package_info = $api->getPackageInfo('vendor_name/package_name');
@@ -52,22 +54,23 @@ public function testCanGetPackageInfo()
         $this->assertEquals('test value', $package_info['test_field']);
     }
 
-    public function testCanHandleBadResponse()
-    {
-        //arrange
-        $http_client = Mockery::mock(ClientInterface::class, [
-            'request' => Mockery::mock(ResponseInterface::class, [
-                'getBody' => Mockery::mock(StreamInterface::class, [
-                    'getContents' => '<html>This is not valid JSON</html>'
-                ])
-            ])
-        ]);
-        $api = new PackagistAPI($http_client);
+	public function testCanHandleBadResponse()
+	{
+		//arrange
+		$http_client = Mockery::mock(ClientInterface::class, [
+			'request' => Mockery::mock(ResponseInterface::class, [
+				'getStatusCode' => 200,
+				'getBody' => Mockery::mock(StreamInterface::class, [
+					'getContents' => '<html>This is not valid JSON</html>'
+				])
+			])
+		]);
+		$api = new PackagistAPI($http_client, STDERR);
 
-        //act
-        $package_info = $api->getPackageInfo('vendor_name/package_name');
+		//act
+		$package_info = $api->getPackageInfo('vendor_name/package_name');
 
-        //assert
-        $this->assertEquals([], $package_info);
-    }
+		//assert
+		$this->assertEquals([], $package_info);
+	}
 }