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<?php

    namespace Deliverist\Builder\Commands;

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


    class PingUrl implements ICommand
    {
        /**
         * @param  Builder
         * @param  string
         * @param  bool
         */
        public function run(Builder $builder, $url = NULL, $validateSsl = TRUE)
        {
            if (!isset($url)) {
                throw new InvalidArgumentException("Missing parameter 'url'.");
            }

            $options = array(
                'ssl' => array(
                    'verify_peer' => $validateSsl,
                    'verify_peer_name' => $validateSsl,
                ),
            );

            $err = ($out = @file_get_contents($url, FALSE, stream_context_create($options))) === FALSE;

            if ($err) {
                $error = error_get_last();
                $builder->logError('Error type ' . $error['type']);
                $builder->logError($error['message']);
                $builder->logError('in file ' . $error['file'] . ':' . $error['line']);
                throw new InvalidStateException('URL is unreachable ' . $url);
            }

            $out = strip_tags($out);
            $lines = explode("\n", $out);

            foreach ($lines as $line) {
                $line = trim($line);

                if ($line === '') {
                    continue;
                }

                $builder->log('> ' . $line);
            }
        }
    }