<?php
/**
 * PostFinance Checkout SDK
 *
 * This library allows to interact with the PostFinance Checkout payment service.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


namespace PostFinanceCheckout\Sdk;

use \Exception;

/**
 * ObjectSerializer Class Doc Comment
 *
 * @category    Class
 * @package     PostFinanceCheckout\Sdk
 * @author      wallee AG
 * @license     http://www.apache.org/licenses/LICENSE-2.0 Apache License v2
 */
class ObjectSerializer
{

	/**
	 * The path to the temporary folder (for downloading files).
	 *
	 * @var string
	 */
	private $tempFolderPath;

	/**
	 * Defined whether debug information should be logged.
	 *
	 * @var boolean
	 */
	private $enableDebugging = false;

	/**
	 * The path to the debug file.
	 *
	 * @var string
	 */
	private $debugFile = 'php://output';

	/**
	 * Constructor.
	 */
	public function __construct() {
		$this->tempFolderPath = sys_get_temp_dir();
	}

	/**
	 * Return the path of the temporary folder used to store downloaded files from endpoints with file response. By
	 * default the system's default temporary folder is used.
	 *
	 * @return string
	 */
	public function getTempFolderPath() {
		return $this->tempFolderPath;
	}

	/**
	 * Sets the path to the temporary folder (for downloading files).
	 *
	 * @param string $tempFolderPath the temporary folder path
	 * @return ObjectSerializer
	 */
	public function setTempFolderPath($tempFolderPath) {
		$this->tempFolderPath = $tempFolderPath;
		return $this;
	}

	/**
	 * Returns true, when debugging is enabled.
	 *
	 * @return boolean
	 */
	public function isDebuggingEnabled() {
		return $this->enableDebugging;
	}

	/**
	 * Enables debugging.
	 *
	 * @return ObjectSerializer
	 */
	public function enableDebugging() {
		$this->enableDebugging = true;
		return $this;
	}

	/**
	 * Disables debugging.
	 *
	 * @return ObjectSerializer
	 */
	public function disableDebugging() {
		$this->enableDebugging = false;
		return $this;
	}

	/**
	 * Returns the path to the debug file.
	 *
	 * @return string
	 */
	public function getDebugFile() {
		return $this->debugFile;
	}

	/**
	 * Sets the path to the debug file.
	 *
	 * @param string $debugFile the debug file
	 * @return ObjectSerializer
	 */
	public function setDebugFile($debugFile) {
		$this->debugFile = $debugFile;
		return $this;
	}

    /**
     * Serialize data
     *
     * @param mixed  $data   the data to serialize
     * @param string $type   the SwaggerType of the data
     * @param string $format the format of the Swagger type of the data
     *
     * @return string|object serialized form of $data
     */
    public static function sanitizeForSerialization($data, $type = null, $format = null)
    {
        if (is_scalar($data) || null === $data) {
            return $data;
        } elseif ($data instanceof \DateTime) {
            return ($format === 'date') ? $data->format('Y-m-d') : $data->format(\DateTime::ATOM);
        } elseif (is_array($data)) {
            foreach ($data as $property => $value) {
                $data[$property] = self::sanitizeForSerialization($value);
            }
            return $data;
        } elseif ($data instanceof \stdClass) {
            foreach ($data as $property => $value) {
                $data->$property = self::sanitizeForSerialization($value);
            }
            return $data;
        } elseif (is_object($data)) {
            $values = [];
            $formats = $data::swaggerFormats();
            foreach ($data::swaggerTypes() as $property => $swaggerType) {
                $getter = $data::getters()[$property];
                $value = $data->$getter();
                if ($value !== null
                    && !in_array($swaggerType, ['DateTime', 'bool', 'boolean', 'byte', 'double', 'float', 'int', 'integer', 'mixed', 'number', 'object', 'string', 'void'], true)
                    && method_exists($swaggerType, 'getAllowableEnumValues')
                    && !in_array($value, $swaggerType::getAllowableEnumValues(), true)) {
                    $imploded = implode("', '", $swaggerType::getAllowableEnumValues());
                    throw new \InvalidArgumentException("Invalid value for enum '$swaggerType', must be one of: '$imploded'");
                }
                if ($value !== null) {
                    $values[$data::attributeMap()[$property]] = self::sanitizeForSerialization($value, $swaggerType, $formats[$property]);
                }
            }
            return (object)$values;
        } else {
            return (string)$data;
        }
    }

    /**
     * Sanitize filename by removing path.
     * e.g. ../../sun.gif becomes sun.gif
     *
     * @param string $filename filename to be sanitized
     *
     * @return string the sanitized filename
     */
    public static function sanitizeFilename($filename)
    {
        if (preg_match("/.*[\/\\\\](.*)$/", $filename, $match)) {
            return $match[1];
        } else {
            return $filename;
        }
    }

    /**
     * Take value and turn it into a string suitable for inclusion in
     * the path, by url-encoding.
     *
     * @param string $value a string which will be part of the path
     *
     * @return string the serialized object
     */
    public static function toPathValue($value)
    {
        return rawurlencode(self::toString($value));
    }

    /**
     * Take value and turn it into a string suitable for inclusion in
     * the query, by imploding comma-separated if it's an object.
     * If it's a string, pass through unchanged. It will be url-encoded
     * later.
     *
     * @param string[]|string|\DateTime $object an object to be serialized to a string
     *
     * @return string the serialized object
     */
    public static function toQueryValue($object)
    {
        if (is_array($object)) {
            return implode(',', $object);
        } else {
            return self::toString($object);
        }
    }

    /**
     * Take value and turn it into a string suitable for inclusion in
     * the header. If it's a string, pass through unchanged
     * If it's a datetime object, format it in ISO8601
     *
     * @param string $value a string which will be part of the header
     *
     * @return string the header string
     */
    public static function toHeaderValue($value)
    {
        return self::toString($value);
    }

    /**
     * Take value and turn it into a string suitable for inclusion in
     * the http body (form parameter). If it's a string, pass through unchanged
     * If it's a datetime object, format it in ISO8601
     *
     * @param string|\SplFileObject $value the value of the form parameter
     *
     * @return string the form string
     */
    public static function toFormValue($value)
    {
        if ($value instanceof \SplFileObject) {
            return $value->getRealPath();
        } else {
            return self::toString($value);
        }
    }

    /**
     * Take value and turn it into a string suitable for inclusion in
     * the parameter. If it's a string, pass through unchanged
     * If it's a datetime object, format it in ISO8601
     *
     * @param string|\DateTime $value the value of the parameter
     *
     * @return string the header string
     */
    public static function toString($value)
    {
        if ($value instanceof \DateTime) { // datetime in ISO8601 format
            return $value->format(\DateTime::ATOM);
        } else {
            return $value;
        }
    }

    /**
     * Serialize an array to a string.
     *
     * @param array  $collection                 collection to serialize to a string
     * @param string $collectionFormat           the format use for serialization (csv,
     * ssv, tsv, pipes, multi)
     * @param bool   $allowCollectionFormatMulti allow collection format to be a multidimensional array
     *
     * @return string
     */
    public static function serializeCollection(array $collection, $collectionFormat, $allowCollectionFormatMulti = false)
    {
        if ($allowCollectionFormatMulti && ('multi' === $collectionFormat)) {
            // http_build_query() almost does the job for us. We just
            // need to fix the result of multidimensional arrays.
            return preg_replace('/%5B[0-9]+%5D=/', '=', http_build_query($collection, '', '&'));
        }
        switch ($collectionFormat) {
            case 'pipes':
                return implode('|', $collection);

            case 'tsv':
                return implode("\t", $collection);

            case 'ssv':
                return implode(' ', $collection);

            case 'csv':
                // Deliberate fall through. CSV is default format.
            default:
                return implode(',', $collection);
        }
    }

    /**
     * Deserialize a JSON string into an object
     *
     * @param mixed    $data          object or primitive to be deserialized
     * @param string   $class         class name is passed as a string
     * @param string[] $httpHeaders   HTTP headers
     * @param string   $discriminator discriminator if polymorphism is used
     *
     * @return object|array|null an single or an array of $class instances
     * @throws \Exception
     */
    public static function deserialize($data, $class, $httpHeaders = null)
    {
        if (null === $data) {
            return null;
        } elseif (substr($class, 0, 4) === 'map[') { // for associative array e.g. map[string,int]
            $inner = substr($class, 4, -1);
            $deserialized = [];
            if (strrpos($inner, ",") !== false) {
                $subClass_array = explode(',', $inner, 2);
                $subClass = $subClass_array[1];
                foreach ($data as $key => $value) {
                    $deserialized[$key] = self::deserialize($value, $subClass, null);
                }
            }
            return $deserialized;
        } elseif (strcasecmp(substr($class, -2), '[]') === 0) {
            $subClass = substr($class, 0, -2);
            $values = [];
            foreach ($data as $key => $value) {
                $values[] = self::deserialize($value, $subClass, null);
            }
            return $values;
        } elseif ($class === 'object') {
            settype($data, 'array');
            return $data;
        } elseif ($class === '\DateTime') {
            // Some API's return an invalid, empty string as a
            // date-time property. DateTime::__construct() will return
            // the current time for empty input which is probably not
            // what is meant. The invalid empty string is probably to
            // be interpreted as a missing field/value. Let's handle
            // this graceful.
            if (!empty($data)) {
                return new \DateTime($data);
            } else {
                return null;
            }
        } elseif (in_array($class, ['DateTime', 'bool', 'boolean', 'byte', 'double', 'float', 'int', 'integer', 'mixed', 'number', 'object', 'string', 'void'], true)) {
            settype($data, $class);
            return $data;
        } elseif ($class === '\SplFileObject') {
            /** @var \Psr\Http\Message\StreamInterface $data */

            // determine file name
            if (array_key_exists('Content-Disposition', $httpHeaders) &&
                preg_match('/inline; filename=[\'"]?([^\'"\s]+)[\'"]?$/i', $httpHeaders['Content-Disposition'], $match)) {
                $filename = Configuration::getDefaultConfiguration()->getTempFolderPath() . DIRECTORY_SEPARATOR . self::sanitizeFilename($match[1]);
            } else {
                $filename = tempnam(Configuration::getDefaultConfiguration()->getTempFolderPath(), '');
            }

            $file = fopen($filename, 'w');
            while ($chunk = $data->read(200)) {
                fwrite($file, $chunk);
            }
            fclose($file);

            return new \SplFileObject($filename, 'r');
        } elseif (method_exists($class, 'getAllowableEnumValues')) {
            if (!in_array($data, $class::getAllowableEnumValues(), true)) {
                $imploded = implode("', '", $class::getAllowableEnumValues());
                throw new \InvalidArgumentException("Invalid value for enum '$class', must be one of: '$imploded'");
            }
            return $data;
        } else {
            // If a discriminator is defined and points to a valid subclass, use it.
            $discriminator = $class::DISCRIMINATOR;
            if (!empty($discriminator) && isset($data->{$discriminator}) && is_string($data->{$discriminator})) {
                $subclass = '\PostFinanceCheckout\Sdk\Model\\' . $data->{$discriminator};
                if (is_subclass_of($subclass, $class)) {
                    $class = $subclass;
                }
            }
            $instance = new $class();
            foreach ($instance::swaggerTypes() as $property => $type) {
                $propertySetter = $instance::setters()[$property];

                if (!isset($propertySetter) || !isset($data->{$instance::attributeMap()[$property]})) {
                    continue;
                }

                $propertyValue = $data->{$instance::attributeMap()[$property]};
                if (isset($propertyValue)) {
                    $instance->$propertySetter(self::deserialize($propertyValue, $type, null));
                }
            }
            return $instance;
        }
    }

    /**
     * Wrapper for json_decode that throws when an error occurs.
     *
     * @param string $json    JSON data to parse
     * @param bool $assoc     When true, returned objects will be converted
     *                        into associative arrays.
     * @param int    $depth   User specified recursion depth.
     * @param int    $options Bitmask of JSON decode options.
     *
     * @return mixed
     * @throws Exception\InvalidArgumentException if the JSON cannot be decoded.
     * @link http://www.php.net/manual/en/function.json-decode.php
     * @link https://github.com/guzzle/guzzle/blob/6.4.1/src/functions.php
     */
    public static function json_decode($json, $assoc = false, $depth = 512, $options = 0)
    {
        $data = \json_decode($json, $assoc, $depth, $options);
        if (JSON_ERROR_NONE !== json_last_error()) {
            throw new Exception('json_decode error: ' . json_last_error_msg());
        }
        return $data;
    }

    /**
     * Wrapper for JSON encoding that throws when an error occurs.
     *
     * @param mixed $value   The value being encoded
     * @param int    $options JSON encode option bitmask
     * @param int    $depth   Set the maximum depth. Must be greater than zero.
     *
     * @return string
     * @throws Exception\InvalidArgumentException if the JSON cannot be encoded.
     * @link http://www.php.net/manual/en/function.json-encode.php
     * @link https://github.com/guzzle/guzzle/blob/6.4.1/src/functions.php
     */
    public static function json_encode($value, $options = 0, $depth = 512)
    {
        $json = \json_encode($value, $options, $depth);
        if (JSON_ERROR_NONE !== json_last_error()) {
            throw new Exception('json_encode error: ' . json_last_error_msg());
        }
        return $json;
    }

    /**
     * Build a query string from an array of key value pairs.
     *
     * This function can use the return value of parse_query() to build a query
     * string. This function does not modify the provided keys when an array is
     * encountered (like http_build_query would).
     *
     * @param array     $params   Query string parameters.
     * @param int|false $encoding Set to false to not encode, PHP_QUERY_RFC3986
     *                            to encode using RFC3986, or PHP_QUERY_RFC1738
     *                            to encode using RFC1738.
     * @return string
     */
    public static function build_query(array $params, $encoding = PHP_QUERY_RFC3986)
    {
        if (!$params) {
            return '';
        }
        if ($encoding === false) {
            $encoder = function ($str) { return $str; };
        } elseif ($encoding === PHP_QUERY_RFC3986) {
            $encoder = 'rawurlencode';
        } elseif ($encoding === PHP_QUERY_RFC1738) {
            $encoder = 'urlencode';
        } else {
            throw new \InvalidArgumentException('Invalid type');
        }

        $qs = '';

        foreach ($params as $k => $v) {
            $k = $encoder($k);
            if (!is_array($v)) {
                $qs .= $k;
                if ($v !== null) {
                    $qs .= '=' . $encoder($v);
                }
                $qs .= '&';
            } else {
                foreach ($v as $vv) {
                    $qs .= $k;
                    if ($vv !== null) {
                        $qs .= '=' . $encoder($vv);
                    }
                    $qs .= '&';
                }
            }
        }
        return $qs ? (string) substr($qs, 0, -1) : '';
    }

}
