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<?php

    namespace CzProject\PhpCli;


    class Console
    {
        /** @var  IOutputProvider */
        protected $outputProvider;

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

        /** @var  IParameterParser */
        protected $parameterParser;

        /** @var  array|NULL */
        protected $parameters;


        public function __construct(IOutputProvider $outputProvider, IInputProvider $inputProvider, IParameterParser $parameterParser)
        {
            $this->outputProvider = $outputProvider;
            $this->inputProvider = $inputProvider;
            $this->parameterParser = $parameterParser;
        }


        /**
         * @return string
         * @throws ConsoleException
         */
        public function getCurrentDirectory()
        {
            $cwd = getcwd();

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

            return $cwd;
        }


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

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

            return $this;
        }


        /**
         * @return static
         */
        public function addRawParameters(array $rawParameters = NULL)
        {
            $parameters = $this->processRawParameters($rawParameters);
            $this->addParameters($parameters);
            return $this;
        }


        /**
         * @return static
         */
        public function processRawParameters(array $rawParameters = NULL)
        {
            return $this->parameterParser->parse($rawParameters);
        }


        /**
         * @param  array|NULL
         * @return static
         */
        public function addParameters(array $parameters = NULL)
        {
            $this->parameters = Parameters\Helpers::merge($parameters, $this->parameters);
            return $this;
        }


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


        /**
         * @param  string
         * @param  mixed
         * @param  bool
         * @return mixed
         */
        public function getParameter($name, $defaultValue = NULL, $required = FALSE)
        {
            if (!isset($this->parameters[$name])) {
                if ($required) {
                    throw new MissingParameterException("Required parameter '$name' not found.");
                }

                return $defaultValue;
            }

            return $this->parameters[$name];
        }


        /**
         * @return IOutputProvider
         */
        public function getOutputProvider()
        {
            return $this->outputProvider;
        }


        /**
         * @param  string|string[]
         * @return static
         */
        public function output($str)
        {
            if (!is_array($str)) {
                $str = func_get_args();
            }
            $this->outputProvider->output($str);
            return $this;
        }


        /**
         * @param  string|string[]
         * @return static
         */
        public function success($str)
        {
            if (!is_array($str)) {
                $str = func_get_args();
            }
            $this->outputProvider->success($str);
            return $this;
        }


        /**
         * @param  string|string[]
         * @return static
         */
        public function error($str)
        {
            if (!is_array($str)) {
                $str = func_get_args();
            }
            $this->outputProvider->error($str);
            return $this;
        }


        /**
         * @param  string|string[]
         * @return static
         */
        public function warning($str)
        {
            if (!is_array($str)) {
                $str = func_get_args();
            }
            $this->outputProvider->warning($str);
            return $this;
        }


        /**
         * @param  string|string[]
         * @return static
         */
        public function info($str)
        {
            if (!is_array($str)) {
                $str = func_get_args();
            }
            $this->outputProvider->info($str);
            return $this;
        }


        /**
         * @param  string|string[]
         * @return static
         */
        public function muted($str)
        {
            if (!is_array($str)) {
                $str = func_get_args();
            }
            $this->outputProvider->muted($str);
            return $this;
        }


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


        /**
         * @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()) {
                $this->outputProvider->output($msg) // print message
                    ->output($msg !== '' ? ' ' : ''); // print one space for not empty message
            }

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