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<?php

    namespace Deliverist\Builder\Commands;

    use Deliverist\Builder\Builder;
    use Deliverist\Builder\FileSystemException;
    use Deliverist\Builder\InvalidArgumentException;
    use Deliverist\Builder\InvalidStateException;
    use Deliverist\Builder\ICommand;
    use Nette\Utils\FileSystem;


    class LessCompile implements ICommand
    {
        /** @var string */
        private $executable = 'lessc';


        /**
         * @param  string
         * @param  self
         */
        public function setExecutable($executable)
        {
            $this->executable = $executable;
            return $this;
        }


        /**
         * @param  Builder
         * @param  string
         */
        public function run(Builder $builder, $file = NULL)
        {
            if (!isset($file)) {
                throw new InvalidArgumentException("Missing parameter 'file'.");
            }

            $path = $builder->getPath($file);

            if (!is_file($path)) {
                throw new FileSystemException("File '$file' not found.");
            }

            $info = pathinfo($path);
            $result = $builder->execute(array(
                $this->executable,
                '-ru',
                '--clean-css', // TODO: option??
                '--no-color',
                $path,
                $info['dirname'] . '/' . $info['filename'] . '.css',
            ));

            $builder->logDebug($result->toText());

            if ($result->getCode() !== 0 || !is_file($path)) {
                throw new InvalidStateException("Compile LESS for file $file failed.");
            }
        }
    }