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<?php
    /** Cz CLI Console
     *
     * @author      Jan Pecha, <janpecha@email.cz>
     */

    namespace Cz\Cli;

    class Console
    {
        /** @var  IOutputFormatter */
        protected $outputFormatter;

        /** @var  IInputProvider */
        protected $inputProvider;

        /** @var  IParametersParser */
        protected $parametersParser;

        /** @var  string|NULL */
        protected $currentDirectory;



        public function __construct(IOutputFormatter $outputFormatter, IInputProvider $inputProvider, IParametersParser $parametersParser)
        {
            $this->outputFormatter = $outputFormatter;
            $this->inputProvider = $inputProvider;
            $this->parametersParser = $parametersParser;
        }



        /**
         * @param   bool
         * @return  string
         * @throws  ConsoleException
         */
        public function getCurrentDirectory($forceRefresh = FALSE)
        {
            if($forceRefresh || $this->currentDirectory === NULL)
            {
                $cwd = getcwd();

                if($cwd === FALSE)
                {
                    throw ConsoleException('CWD error');
                }

                $this->currentDirectory = $cwd;
            }

            return $this->currentDirectory;
        }



        /**
         * @param   string
         * @return  self
         */
        public function setCurrentDirectory($directory)
        {
            if($directory[0] !== '/')
            {
                $directory = $this->getCurrentDirectory() . "/$directory";
            }

            if(!chdir($directory))
            {
                throw new ConsoleException('CWD set error');
            }

            $this->getCurrentDirectory(TRUE); // force refresh of CWD
            return $this;
        }



        /**
         * @return  self
         */
        public function setRawParameters(array $parameters = NULL)
        {
            $this->parametersParser->setRawParameters($parameters);
            return $this;
        }



        /**
         * @param   array|NULL
         * @return  self
         */
        public function setDefaultParameters(array $defaultParameters = NULL)
        {
            $this->parametersParser->setDefaultParameters($defaultParameters);
            return $this;
        }



        /**
         * @return  array|NULL
         */
        public function getParameters()
        {
            return $this->parametersParser->getParameters();
        }



        /**
         * @param   string
         * @param   mixed
         * @param   bool
         * @return  mixed
         */
        public function getParameter($name, $defaultValue = NULL, $required = FALSE)
        {
            return $this->parametersParser->getParameter($name, $defaultValue, $required);
        }



        /**
         * @param   string|NULL
         * @return  self
         */
        public function output($str = NULL)
        {
            if($str !== NULL)
            {
                return $this->outputFormatter->output($str);
            }

            return $this->outputFormatter;
        }



        /**
         * @param   string|NULL
         * @return  self
         */
        public function success($str = NULL)
        {
            return $this->outputFormatter->success($str);
        }



        /**
         * @param   string|NULL
         * @return  self
         */
        public function error($str = NULL)
        {
            return $this->outputFormatter->error($str);
        }



        /**
         * @param   string|NULL
         * @return  self
         */
        public function warning($str = NULL)
        {
            return $this->outputFormatter->warning($str);
        }



        /**
         * @param   string|NULL
         * @return  self
         */
        public function info($str = NULL)
        {
            return $this->outputFormatter->info($str);
        }



        /**
         * @return  IOutputFormatter
         */
        public function nl()
        {
            return $this->outputFormatter->nl();
        }



        /**
         * @param   bool
         * @return  IOutputFormatter
         */
        public function setAutoNewLine($state)
        {
            return $this->outputFormatter->setAutoNewLine($state);
        }



        /**
         * @return  bool
         */
        public function getAutoNewLine()
        {
            return $this->outputFormatter->getAutoNewLine();
        }



        /**
         * @param   string|NULL  optional
         * @return  string
         */
        public function input($msg = NULL)
        {
            return $this->readInput($msg);
        }



        /**
         * @param   string|NULL  optional
         * @return  string
         */
        public function readInput($msg = NULL)
        {
            $msg = $msg !== NULL ? (string) $msg : $msg;

            if(!$this->inputProvider->isPrintingPrompt())
            {
                $currentAutoNewLine = $this->outputFormatter->getAutoNewLine();
                $this->outputFormatter->setAutoNewLine(FALSE) // disable new lines after output()
                    ->output($msg) // print message
                    ->output($msg !== '' ? ' ' : '') // print one space for not empty message
                    ->setAutoNewLine($currentAutoNewLine); // restore settings
            }

            return $this->inputProvider->readInput($msg);
        }



        /**
         * @return  IOutputFormatter
         */
        public function enableNewLine()
        {
            return $this->setAutoNewLine(TRUE);
        }



        /**
         * @return  IOutputFormatter
         */
        public function disableNewLine()
        {
            return $this->setAutoNewLine(FALSE);
        }
    }



    class ConsoleException extends \RuntimeException
    {
    }