Allowing a custom config_file relative to the project

config/services.php

@@ -20,6 +20,7 @@
                 param('kernel.project_dir').'/var/tailwind',
                 abstract_arg('path to tailwind binary'),
                 abstract_arg('Tailwind binary version'),
+                abstract_arg('path to Tailwind CSS config file'),
             ])
 
         ->set('tailwind.command.build', TailwindBuildCommand::class)
@@ -31,7 +32,6 @@
         ->set('tailwind.command.init', TailwindInitCommand::class)
             ->args([
                 service('tailwind.builder'),
-                param('kernel.project_dir'),
             ])
             ->tag('console.command')
 

doc/index.rst

@@ -129,6 +129,15 @@ directives):
     symfonycasts_tailwind:
         input_css: 'assets/styles/other.css'
 
+Another option is the ``config_file`` option, which defaults to ``tailwind.config.js``.
+This represents the Tailwind configuration file:
+
+.. code-block:: yaml
+
+    # config/packages/symfonycasts_tailwind.yaml
+    symfonycasts_tailwind:
+        config_file: 'tailwind.config.js'
+
 Using a Different Binary
 ------------------------
 

src/Command/TailwindInitCommand.php

@@ -24,7 +24,6 @@ class TailwindInitCommand extends Command
 {
     public function __construct(
         private TailwindBuilder $tailwindBuilder,
-        private string $projectDir,
     ) {
         parent::__construct();
     }
@@ -49,8 +48,9 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
     private function createTailwindConfig(SymfonyStyle $io): bool
     {
-        if (file_exists($this->projectDir.'/tailwind.config.js')) {
-            $io->note('tailwind.config.js found: Tailwind CSS is already initialized.');
+        $configFile = $this->tailwindBuilder->getConfigFilePath();
+        if (file_exists($configFile)) {
+            $io->note(sprintf('Tailwind config file already exists in "%s"', $configFile));
 
             return true;
         }
@@ -85,7 +85,7 @@ private function createTailwindConfig(SymfonyStyle $io): bool
 
         EOF;
 
-        file_put_contents($this->projectDir.'/tailwind.config.js', $tailwindConfig);
+        file_put_contents($configFile, $tailwindConfig);
 
         return true;
     }

src/DependencyInjection/TailwindExtension.php

@@ -31,6 +31,7 @@ public function load(array $configs, ContainerBuilder $container): void
             ->replaceArgument(1, $config['input_css'])
             ->replaceArgument(3, $config['binary'])
             ->replaceArgument(4, $config['binary_version'])
+            ->replaceArgument(5, $config['config_file'])
         ;
     }
 
@@ -56,6 +57,10 @@ public function getConfigTreeBuilder(): TreeBuilder
                     ->info('Path to CSS file to process through Tailwind')
                     ->defaultValue('%kernel.project_dir%/assets/styles/app.css')
                 ->end()
+                ->scalarNode('config_file')
+                    ->info('Path to the tailwind.config.js file')
+                    ->defaultValue('%kernel.project_dir%/tailwind.config.js')
+                ->end()
                 ->scalarNode('binary')
                     ->info('The tailwind binary to use instead of downloading a new one')
                     ->defaultNull()

src/TailwindBuilder.php

@@ -31,6 +31,7 @@ public function __construct(
         private readonly string $tailwindVarDir,
         private readonly ?string $binaryPath = null,
         private readonly ?string $binaryVersion = null,
+        private readonly string $configPath = 'tailwind.config.js',
     ) {
         if (is_file($inputPath)) {
             $this->inputPath = $inputPath;
@@ -48,7 +49,7 @@ public function runBuild(
         bool $minify,
     ): Process {
         $binary = $this->createBinary();
-        $arguments = ['-i', $this->inputPath, '-o', $this->getInternalOutputCssPath()];
+        $arguments = ['-c', $this->configPath, '-i', $this->inputPath, '-o', $this->getInternalOutputCssPath()];
         if ($watch) {
             $arguments[] = '--watch';
         }
@@ -105,6 +106,11 @@ public function getInputCssPath(): string
         return $this->inputPath;
     }
 
+    public function getConfigFilePath(): string
+    {
+        return $this->configPath;
+    }
+
     public function getOutputCssContent(): string
     {
         if (!is_file($this->getInternalOutputCssPath())) {

tests/TailwindBuilderTest.php

@@ -39,7 +39,10 @@ public function testIntegrationWithDefaultOptions(): void
         $builder = new TailwindBuilder(
             __DIR__.'/fixtures',
             __DIR__.'/fixtures/assets/styles/app.css',
-            __DIR__.'/fixtures/var/tailwind'
+            __DIR__.'/fixtures/var/tailwind',
+            null,
+            null,
+            __DIR__.'/fixtures/tailwind.config.js'
         );
         $process = $builder->runBuild(watch: false, minify: false);
         $process->wait();
@@ -56,7 +59,10 @@ public function testIntegrationWithMinify(): void
         $builder = new TailwindBuilder(
             __DIR__.'/fixtures',
             __DIR__.'/fixtures/assets/styles/app.css',
-            __DIR__.'/fixtures/var/tailwind'
+            __DIR__.'/fixtures/var/tailwind',
+            null,
+            null,
+            __DIR__.'/fixtures/tailwind.config.js'
         );
         $process = $builder->runBuild(watch: false, minify: true);
         $process->wait();