<?php
/*
 * Deals with PDF document level aspects
 */
namespace Aspose\Cloud\Pdf;

use Aspose\Cloud\Common\AsposeApp;
use Aspose\Cloud\Common\Utils;
use Aspose\Cloud\Common\Product;
use Aspose\Cloud\Storage\Folder;
use Aspose\Cloud\Exception\AsposeCloudException as Exception;

class Document {

    public $fileName = '';

    public function __construct($fileName) {
        $this->fileName = $fileName;
    }

    /*
     * Gets the page count of the specified PDF document
     */
    public function getPageCount() {
        //build URI
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/pages';

        //sign URI
        $signedURI = Utils::sign($strURI);

        //get response stream
        $responseStream = Utils::ProcessCommand($signedURI, 'GET', '');

        $json = json_decode($responseStream);

        return count($json->Pages->List);
    }

    /*
     * Merges two PDF documents
     * @param string $basePdf (name of the base/first PDF file)
     * @param string $newPdf (name of the second PDF file to merge with base PDF file)
     * @param string $startPage (page number to start merging second PDF: enter 0 to merge complete document)
     * @param string $endPage (page number to end merging second PDF: enter 0 to merge complete document)
     * @param string $sourceFolder (name of the folder where base/first and second input PDFs are present)
     */
    public function appendDocument($basePdf, $newPdf, $startPage = 0, $endPage = 0, $sourceFolder = '') {
        //check whether files are set or not
        if ($basePdf == '')
            throw new Exception('Base file not specified');
        if ($newPdf == '')
            throw new Exception('File to merge is not specified');

        //build URI to merge PDFs
        if ($sourceFolder == '')
            $strURI = Product::$baseProductUri . '/pdf/' . $basePdf .
                    '/appendDocument?appendFile=' . $newPdf . ($startPage > 0 ? '&startPage=' . $startPage : '' ) .
                    ($endPage > 0 ? '&endPage=' . $endPage : '' );
        else
            $strURI = Product::$baseProductUri . '/pdf/' . $basePdf .
                    '/appendDocument?appendFile=' . $sourceFolder . '/' . $newPdf .
                    ($startPage > 0 ? '&startPage=' . $startPage : '' ) .
                    ($endPage > 0 ? '&endPage=' . $endPage : '' ) .
                    '&folder=' . $sourceFolder;

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'POST', '', '');

        $json = json_decode($responseStream);

        if ($json->Code == 200) {
            $folder = new Folder();
            $path = "";
            if($sourceFolder == ""){
                $path = $basePdf;
            }else{
                $path = $sourceFolder . '/' . $basePdf;
            }
            $outputStream = $folder->GetFile($path);
            $outputPath = AsposeApp::$outPutLocation . $basePdf;
            Utils::saveFile($outputStream, $outputPath);
        } else {
            return false;
        }
    }

    /*
     * Merges tow or more PDF documents
     * @param array $sourceFiles (list of PDF files to be merged)
     */
    public function mergeDocuments(array $sourceFiles = array()) {
        $mergedFileName = $this->fileName;
        //check whether files are set or not
        if ($mergedFileName == '')
            throw new Exception('Output file not specified');
        if (empty($sourceFiles))
            throw new Exception('File to merge are not specified');
        if (count($sourceFiles) < 2)
            throw new Exception('Two or more files are requred to merge');


        //Build JSON to post
        $documentsList = array('List' => $sourceFiles);
        $json = json_encode($documentsList);

        $strURI = Product::$baseProductUri . '/pdf/' . $mergedFileName . '/merge';

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = json_decode(Utils::processCommand($signedURI, 'PUT', 'json', $json));

        if ($responseStream->Code == 200)
            return true;
        else
            return false;
    }

    /*
     * Creates a PDF from HTML
     * @param string $pdfFileName (name of the PDF file to create)
     * @param string $htmlFileName (name of the HTML template file)
     */
    public function createFromHtml($pdfFileName, $htmlFileName) {
        //check whether files are set or not
        if ($pdfFileName == '')
            throw new Exception('PDF file name not specified');
        if ($htmlFileName == '')
            throw new Exception('HTML template file name not specified');

        //build URI to create PDF
        $strURI = Product::$baseProductUri . '/pdf/' . $pdfFileName .
                '?templateFile=' . $htmlFileName . '&templateType=html';

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'PUT', '', '');

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($pdfFileName);
            $outputPath = AsposeApp::$outPutLocation . $pdfFileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Creates a PDF from XML
     * @param string $pdfFileName (name of the PDF file to create)
     * @param string $xsltFileName (name of the XSLT template file)
     * @param string $xmlFileName (name of the XML file)
     */
    public function createFromXml($pdfFileName, $xsltFileName, $xmlFileName) {
        //check whether files are set or not
        if ($pdfFileName == '')
            throw new Exception('PDF file name not specified');
        if ($xsltFileName == '')
            throw new Exception('XSLT file name not specified');
        if ($xmlFileName == '')
            throw new Exception('XML file name not specified');

        //build URI to create PDF
        $strURI = Product::$baseProductUri . '/pdf/' . $pdfFileName . '?templateFile=' .
                $xsltFileName . '&dataFile=' . $xmlFileName . '&templateType=xml';

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'PUT', '', '');

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($pdfFileName);
            $outputPath = AsposeApp::$outPutLocation . $pdfFileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Gets the FormField count of the specified PDF document
     */
    public function getFormFieldCount() {
        //build URI
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/fields';

        //sign URI
        $signedURI = Utils::sign($strURI);

        //get response stream
        $responseStream = Utils::ProcessCommand($signedURI, 'GET', '');

        $json = json_decode($responseStream);

        return count($json->Fields->List);
    }

    /*
     * Gets the list of FormFields from the specified PDF document
     */
    public function getFormFields() {
        //build URI
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/fields';

        //sign URI
        $signedURI = Utils::sign($strURI);

        //get response stream
        $responseStream = Utils::ProcessCommand($signedURI, 'GET', '');

        $json = json_decode($responseStream);

        return $json->Fields->List;
    }

    /*
     * Gets a particular form field
     * $fieldName
     */
    public function getFormField($fieldName) {
        //build URI
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/fields/' . $fieldName;

        //sign URI
        $signedURI = Utils::sign($strURI);

        //get response stream
        $responseStream = Utils::ProcessCommand($signedURI, 'GET', '');

        $json = json_decode($responseStream);

        return $json->Field;
    }

    /*
     * Creates an Empty Pdf document
     * @param string $pdfFileName (name of the PDF file to create)
     */
    public function createEmptyPdf($pdfFileName) {
        //check whether files are set or not
        if ($pdfFileName == '')
            throw new Exception('PDF file name not specified');

        //build URI to create PDF
        $strURI = Product::$baseProductUri . '/pdf/' . $pdfFileName;

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'PUT', '', '');

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($pdfFileName);
            $outputPath = AsposeApp::$outPutLocation . $pdfFileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Adds new page to opened Pdf document
     */
    public function addNewPage() {
        //check whether files are set or not
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        //build URI to add page
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/pages';

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'PUT', '', '');

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($this->fileName);
            $outputPath = AsposeApp::$outPutLocation . $this->fileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Deletes selected page from Pdf document
     * $pageNumber
     */
    public function deletePage($pageNumber) {
        //check whether files are set or not
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        //build URI to delete page
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/pages/' . $pageNumber;

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'DELETE', '', '');

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($this->fileName);
            $outputPath = AsposeApp::$outPutLocation . $this->fileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Moves selected page in Pdf document to new location
     * $pageNumber
     * $newLocation
     */
    public function movePage($pageNumber, $newLocation) {
        //check whether files are set or not
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        //build URI to move page
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/pages/' . $pageNumber .
                '/movePage?newIndex=' . $newLocation;

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'POST', '', '');

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($this->fileName);
            $outputPath = AsposeApp::$outPutLocation . $this->fileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Replaces Image in PDF File using Local Image Stream
     * $pageNumber
     * $imageIndex
     * $imageStream
     */
    public function replaceImageUsingStream($pageNumber, $imageIndex, $imageStream) {
        //check whether files are set or not
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        //build URI to replace image
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/pages/' . $pageNumber .
                '/images/' . $imageIndex;

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'POST', '', $imageStream);

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($this->fileName);
            $outputPath = AsposeApp::$outPutLocation . $this->fileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Replaces Image in PDF File using Local Image Stream
     * $pageNumber
     * $imageIndex
     * $fileName
     */
    public function replaceImageUsingFile($pageNumber, $imageIndex, $fileName) {
        //check whether files are set or not
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        //build URI to replace image
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/pages/' . $pageNumber .
                '/images/' . $imageIndex . '?imageFile=' . $fileName;

        //sign URI
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'POST', '', '');

        $v_output = Utils::validateOutput($responseStream);

        if ($v_output === '') {
            //Save PDF file on server
            $folder = new Folder();
            $outputStream = $folder->GetFile($this->fileName);
            $outputPath = AsposeApp::$outPutLocation . $this->fileName;
            Utils::saveFile($outputStream, $outputPath);
            return $outputPath;
        }
        else
            return $v_output;
    }

    /*
     * Get all the properties of the specified document	
     */
    public function getDocumentProperties() {
            if ($this->fileName == '')
                throw new Exception('PDF file name not specified');

            //build URI to replace image
            $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/documentProperties';

            //sign URI
            $signedURI = Utils::sign($strURI);
            $responseStream = Utils::processCommand($signedURI, 'GET', '', '');

            $response_arr = json_decode($responseStream);

            return $response_arr->DocumentProperties->List;
    }

    /*
     * Get specified properity of the document	
     * @param string $propertyName
     */
    public function getDocumentProperty($propertyName = '') {
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        if ($propertyName == '')
            throw new Exception('Property name not specified');

        //build URI to replace image
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/documentProperties/' . $propertyName;

        //sign URI
        $signedURI = Utils::sign($strURI);
        $responseStream = Utils::processCommand($signedURI, 'GET', '', '');

        $response_arr = json_decode($responseStream);

        return $response_arr->DocumentProperty;
    }

    /*
     * Set specified properity of the document	
     * @param string $propertyName
     * @param string $propertyValue
     */
    public function setDocumentProperty($propertyName = '', $propertyValue = '') {
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        if ($propertyName == '')
            throw new Exception('Property name not specified');

        //build URI to replace image
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/documentProperties/' . $propertyName;

        $putArray['Value'] = $propertyValue;
        $json = json_encode($putArray);

        //sign URI
        $signedURI = Utils::sign($strURI);
        $responseStream = Utils::processCommand($signedURI, 'PUT', 'json', $json);

        $response_arr = json_decode($responseStream);

        return $response_arr->DocumentProperty;
    }

    /*
     * Remove all properties of the document	
     */
    public function removeAllProperties() {
        if ($this->fileName == '')
            throw new Exception('PDF file name not specified');

        //build URI to replace image
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/documentProperties';

        //sign URI
        $signedURI = Utils::sign($strURI);
        $responseStream = Utils::processCommand($signedURI, 'DELETE', '', '');

        $response_arr = json_decode($responseStream);

        return $response_arr->Code == 200 ? true : false;
    }

    public function splitAllPages() {
        if ($this->fileName == '') {
            throw new Exception('File name not specified');
        }
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/split';
        $signedURI = Utils::sign($strURI);
        $responseStream = Utils::processCommand($signedURI, 'POST', '', '');
        $json = json_decode($responseStream);
        $i = 1;
        foreach ($json->Result->Documents as $splitPage) {
            $splitFileName = basename($splitPage->Href);
            $strURI = Product::$baseProductUri . '/storage/file/' . $splitFileName;
            $signedURI = Utils::sign($strURI);
            $responseStream = Utils::processCommand($signedURI, 'GET', '', '');
            $fileName = $this->fileName . '_' . $i . '.pdf';
            $outputFile = AsposeApp::$outPutLocation . $fileName;
            Utils::saveFile($responseStream, $outputFile);
            echo $outputFile.'<br />';
            $i++;
        }
    }

    public function splitPages($from, $to) {
        if ($this->fileName == '') {
            throw new Exception('File name not specified');
        }
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/split?from=' . $from . '&to=' . $to;
        $signedURI = Utils::sign($strURI);
        $responseStream = Utils::processCommand($signedURI, 'POST', '', '');
        $json = json_decode($responseStream);
        $i = 1;
        foreach ($json->Result->Documents as $splitPage) {
            $splitFileName = basename($splitPage->Href);
            $strURI = Product::$baseProductUri . '/storage/file/' . $splitFileName;
            $signedURI = Utils::sign($strURI);
            $responseStream = Utils::processCommand($signedURI, 'GET', '', '');
            $fileName = $this->fileName . '_' . $i . '.pdf';
            $outputFile = AsposeApp::$outPutLocation . $fileName;
            Utils::saveFile($responseStream, $outputFile);
            echo $outputFile . '<br />';
            $i++;
        }
    }

    public function splitPagesToAnyFormat($from, $to, $format) {
        if ($this->fileName == '') {
            throw new Exception('File name not specified');
        }
        $strURI = Product::$baseProductUri . '/pdf/' . $this->fileName . '/split?from=' . $from . '&to=' . $to . '&format=' . $format;
        $signedURI = Utils::sign($strURI);
        $responseStream = Utils::processCommand($signedURI, 'POST', '', '');
        $json = json_decode($responseStream);
        $i = 1;
        foreach ($json->Result->Documents as $splitPage) {
            $splitFileName = basename($splitPage->Href);
            $strURI = Product::$baseProductUri . '/storage/file/' . $splitFileName;
            $signedURI = Utils::sign($strURI);
            $responseStream = Utils::processCommand($signedURI, 'GET', '', '');
            $fileName = $this->fileName . '_' . $i . '.' . $format;
            $outputFile = AsposeApp::$outPutLocation . $fileName;
            Utils::saveFile($responseStream, $outputFile);
            echo $outputFile . '<br />';
            $i++;
        }
    }

}