Enable bundles autodiscovery by default and provide extra.symfony.bundles configuration for customizations

Author: SerheyDolgushev

src/Flex.php

@@ -444,7 +444,7 @@ function ($value) {
                         }
                         $value = strtolower($value[0]);
                         if (!\in_array($value, ['y', 'n', 'a', 'p'])) {
-                            throw new \InvalidArgumentException('Invalid choice');
+                            throw new \InvalidArgumentException('Invalid choice.');
                         }
 
                         return $value;
@@ -757,18 +757,42 @@ public function fetchRecipes(array $operations): array
             }
 
             $noRecipe = !isset($manifests[$name]) || (isset($manifests[$name]['not_installable']) && $manifests[$name]['not_installable']);
-            if ($noRecipe && 'symfony-bundle' === $package->getType()) {
-                $manifest = [];
-                $bundle = new SymfonyBundle($this->composer, $package, $job);
-                if (null === $devPackages) {
-                    $devPackages = array_column($this->composer->getLocker()->getLockData()['packages-dev'], 'name');
-                }
-                $envs = \in_array($name, $devPackages) ? ['dev', 'test'] : ['all'];
-                foreach ($bundle->getClassNames() as $class) {
-                    $manifest['manifest']['bundles'][$class] = $envs;
+            if ($noRecipe) {
+                $bundles = [];
+
+                $extra = $package->getExtra();
+                if (isset($extra['symfony']['bundles'])) {
+                    $extraBundles = $extra['symfony']['bundles'];
+                    if (!\is_array($extraBundles)) {
+                        throw new \InvalidArgumentException(sprintf('Entry "bundles" under "extra.symfony" in the composer.json of package "%s" must be an array, "%s" given.', $name, \gettype($extraBundles)));
+                    }
+                    foreach ($extraBundles as $bundleClass => $envs) {
+                        if (!\is_array($envs)) {
+                            throw new \InvalidArgumentException(sprintf('Invalid envs for bundle "%s" under "extra.symfony.bundles": array expected, "%s" given in the composer.json of package "%s".', $bundleClass, \gettype($envs), $name));
+                        }
+                        foreach ($envs as $env) {
+                            if (!\is_string($env)) {
+                                throw new \InvalidArgumentException(sprintf('Bundle "%s" under "extra.symfony.bundles" should list Symfony envs as strings, "%s" found in the composer.json of package "%s".', $bundleClass, \gettype($env), $name));
+                            }
+                        }
+                        $bundles[$bundleClass] = $envs;
+                    }
+                } else {
+                    if (null === $devPackages) {
+                        $devPackages = array_column($this->composer->getLocker()->getLockData()['packages-dev'], 'name');
+                    }
+                    $envs = \in_array($name, $devPackages) ? ['dev', 'test'] : ['all'];
+                    $bundle = new SymfonyBundle($this->composer, $package, $job);
+                    foreach ($bundle->getClassNames() as $bundleClass) {
+                        $bundles[$bundleClass] = $envs;
+                    }
                 }
-                if ($manifest) {
-                    $manifest['origin'] = sprintf('%s:%s@auto-generated recipe', $name, $package->getPrettyVersion());
+
+                if ($bundles) {
+                    $manifest = [
+                        'origin' => sprintf('%s:%s@auto-generated recipe', $name, $package->getPrettyVersion()),
+                        'manifest' => ['bundles' => $bundles],
+                    ];
                     $recipes[$name] = new Recipe($package, $name, $job, $manifest);
                 }
             }