<?php

/**
 * PHPUnit Testing for the MPDI (FPDI) Functionality
 *
 * @package    mPDF
 * @author     Blue Liquid Designs <admin@blueliquiddesigns.com.au>
 * @copyright  2015 Blue Liquid Designs
 * @license    GPLv2
 * @since      6.1.0
 */

/**
 * The MPDI Testing suite
 * @group mpdi
 */
class MPDITest extends PHPUnit_Framework_TestCase
{

    /**
     * Holds our mPDF object instance
     * @var object
     * @since 6.1.0
     */
    private $mpdf;

    /**
     * Holds our FPDI object instance
     * @var object
     * @since 6.1.0
     */
    private $parser;

    /**
     * Holds our FPDI Parser object instance
     * @var object
     * @since 6.1.0
     */
    private $fpdi_parser;

    /**
     * Set up our common testing PDFs
     */
    public function setUp()
    {
        parent::setUp();

        /* Autoload our classes */
        require_once _MPDF_PATH . 'vendor/autoload.php';

        /* Set up our test objects */
        $this->mpdf        = new mPDF();
        $this->fpdi_parser = new fpdi_pdf_parser( _MPDF_PATH . 'tests/data/pdfs/2-Page-PDF_1_4.pdf', $this->mpdf );
        $this->parser      = new pdf_parser( _MPDF_PATH . 'tests/data/pdfs/2-Page-PDF_1_4.pdf' );
    }

    /**
     * Call protected/private method of a class.
     *
     * @param object &$object    Instantiated object that we will run method on.
     * @param string $methodName Method name to call
     * @param array  $parameters Array of parameters to pass into method.
     *
     * @return mixed Method return.
     */
    protected function invokeMethod( &$object, $methodName, array $parameters = array() )
    {
        $reflection = new \ReflectionClass( get_class($object) );
        $method = $reflection->getMethod( $methodName );
        $method->setAccessible( true );

        return $method->invokeArgs($object, $parameters);
    }

    /**
     * Retreve protected/private properties of a class.
     *
     * @param object &$object    Instantiated object that we will run method on.
     * @param string $propertyName Property name to retreve
     */
    protected function getProperty( &$object, $propertyName ) {
        $reflection = new \ReflectionClass( get_class($object) );
        $property = $reflection->getProperty( $propertyName );
        $property->setAccessible( true );

        return $property->getValue( $object );
    }

    /**
     * Check the xref ofset value is accurate
     * From pdf_parser.php
     * @since 6.1.0
     */
    public function test_pdf_find_xref()
    {
        $this->assertEquals(116, $this->invokeMethod( $this->parser, '_findXref' ) );
    }

    /**
     * Check the standardised xref return value based on our testing PDF
     * From pdf_parser.php
     * @since 6.1.0
     */
    public function test_pdf_read_xref()
    {
        $xref = array();

        $this->invokeMethod( $this->parser, '_readXref', array( & $xref, $this->invokeMethod( $this->parser, '_findXref' ) ) );

        /* Verify the xref array */
        $this->assertArrayHasKey('xrefLocation', $xref);
        $this->assertArrayHasKey('maxObject', $xref);
        $this->assertArrayHasKey('xref', $xref);
        $this->assertArrayHasKey('trailer', $xref);

        /* Check the xref array data integrity */
        $this->assertEquals(116, $xref['xrefLocation']);
        $this->assertEquals(27, $xref['maxObject']);
        $this->assertTrue(is_array($xref['xref']));
        $this->assertTrue(is_array($xref['trailer']));

        /* Check the $xref['xref'] array data integrity */
        $this->assertEquals(16, $xref['xref'][9][0]);
        $this->assertEquals(857, $xref['xref'][10][0]);
        $this->assertEquals(935, $xref['xref'][11][0]);
        $this->assertEquals(1166, $xref['xref'][12][0]);
        $this->assertEquals(1347, $xref['xref'][13][0]);
        $this->assertEquals(1742, $xref['xref'][14][0]);
        $this->assertEquals(1792, $xref['xref'][15][0]);
        $this->assertEquals(1837, $xref['xref'][16][0]);
        $this->assertEquals(1914, $xref['xref'][17][0]);
        $this->assertEquals(2137, $xref['xref'][18][0]);
        $this->assertEquals(2699, $xref['xref'][19][0]);
        $this->assertEquals(3069, $xref['xref'][20][0]);
        $this->assertEquals(3284, $xref['xref'][21][0]);
        $this->assertEquals(3319, $xref['xref'][22][0]);
        $this->assertEquals(14059, $xref['xref'][23][0]);
        $this->assertEquals(16751, $xref['xref'][24][0]);
        $this->assertEquals(17706, $xref['xref'][25][0]);
        $this->assertEquals(656, $xref['xref'][26][0]);

        $this->assertEquals(0, $xref['xref'][0]['65535']);
        $this->assertEquals(18010, $xref['xref'][1][0]);
        $this->assertEquals(18238, $xref['xref'][2][0]);
        $this->assertEquals(18418, $xref['xref'][3][0]);
        $this->assertEquals(18980, $xref['xref'][4][0]);
        $this->assertEquals(19014, $xref['xref'][5][0]);
        $this->assertEquals(19038, $xref['xref'][6][0]);
        $this->assertEquals(19096, $xref['xref'][7][0]);
        $this->assertEquals(22433, $xref['xref'][8][0]);

        /* Check the $xref['trailer'] array */
        $this->assertEquals(5, $xref['trailer'][0]);
        $this->assertTrue(is_array($xref['trailer'][1]));

        $this->assertEquals(1, $xref['trailer'][1]['/Size'][0]);
        $this->assertEquals(27, $xref['trailer'][1]['/Size'][1]);

        $this->assertEquals(6, $xref['trailer'][1]['/ID'][0]);

        $this->assertEquals(3, $xref['trailer'][1]['/ID'][1][0][0]);
        $this->assertEquals('F34FF699722057ED0305FD8963F8BEE6', $xref['trailer'][1]['/ID'][1][0][1]);

        $this->assertEquals(3, $xref['trailer'][1]['/ID'][1][1][0]);
        $this->assertEquals('37D4D0052D959F40A6C7109C3CED2DB5', $xref['trailer'][1]['/ID'][1][1][1]);

        $this->assertEquals(8, $xref['trailer'][1]['/Root'][0]);
        $this->assertEquals(10, $xref['trailer'][1]['/Root'][1]);
        $this->assertEquals(0, $xref['trailer'][1]['/Root'][2]);

        $this->assertEquals(8, $xref['trailer'][1]['/Info'][0]);
        $this->assertEquals(8, $xref['trailer'][1]['/Info'][1]);
        $this->assertEquals(0, $xref['trailer'][1]['/Info'][2]);

        $this->assertEquals(1, $xref['trailer'][1]['/Prev'][0]);
        $this->assertEquals(22585, $xref['trailer'][1]['/Prev'][1]);
    }

    /**
     * Check the standardised Trailer /Root value is found
     * From pdf_parser.php
     * @since 6.1.0
     */
    public function test_pdf_read_root()
    {
        $root = $this->getProperty( $this->parser, '_root' );

        $this->assertEquals(9, $root[0]);
        $this->assertEquals(true, is_array( $root[1] ) );
        $this->assertEquals(0, $root[2]);
    }

    /**
     * Check the standardised resolve object functions
     * From pdf_parser.php
     * @since 6.1.0
     */
    public function test_resolve_object()
    {
        $resolved = $this->parser->resolveObject( $this->getProperty( $this->parser, '_root' ) );

        /* Check for the correct results */
        $this->assertEquals(9, $resolved[0]);
        $this->assertEquals(10, $resolved['obj']);
        $this->assertEquals(0, $resolved['gen']);
        $this->assertTrue(is_array($resolved[1]));

        $this->assertEquals(5, $resolved[1][0]);
        $this->assertTrue(is_array($resolved[1][1]));

        $this->assertArrayHasKey('/Metadata', $resolved[1][1]);
        $this->assertArrayHasKey('/PageLabels', $resolved[1][1]);
        $this->assertArrayHasKey('/Pages', $resolved[1][1]);
        $this->assertArrayHasKey('/Type', $resolved[1][1]);

        $this->assertEquals(8, $resolved[1][1]['/Metadata'][0]);
        $this->assertEquals(7, $resolved[1][1]['/Metadata'][1]);
        $this->assertEquals(0, $resolved[1][1]['/Metadata'][2]);

        $this->assertEquals(8, $resolved[1][1]['/PageLabels'][0]);
        $this->assertEquals(4, $resolved[1][1]['/PageLabels'][1]);
        $this->assertEquals(0, $resolved[1][1]['/PageLabels'][2]);

        $this->assertEquals(8, $resolved[1][1]['/Pages'][0]);
        $this->assertEquals(6, $resolved[1][1]['/Pages'][1]);
        $this->assertEquals(0, $resolved[1][1]['/Pages'][2]);

        $this->assertEquals(2, $resolved[1][1]['/Type'][0]);
        $this->assertEquals('/Catalog', $resolved[1][1]['/Type'][1]);
    }

    /**
     * Check the standardised FPDI PDF loader (the construct)
     * From fpdi_pdf_parser.php
     * @since 6.1.0
     */
    public function test_fpdi_pdf_parser()
    {
        $this->assertSame(2, $this->fpdi_parser->getPageCount() );

        $_pages = $this->getProperty( $this->fpdi_parser, '_pages' );

        $page1 = $_pages[0];
        $page2 = $_pages[1];

        /* Check Page 1 as the appropriate values */
        $this->assertEquals(9, $page1[0]);
        $this->assertEquals(11, $page1['obj']);
        $this->assertEquals(0, $page1['gen']);

        /* Check Page 2 as the appropriate values */
        $this->assertEquals(5, $page1[1][0]);
        $this->assertTrue(is_array($page1[1][1]));

        $this->assertArrayHasKey('/ArtBox', $page1[1][1]);
        $this->assertArrayHasKey('/BleedBox', $page1[1][1]);
        $this->assertArrayHasKey('/Contents', $page1[1][1]);
        $this->assertArrayHasKey('/CropBox', $page1[1][1]);
        $this->assertArrayHasKey('/MediaBox', $page1[1][1]);
        $this->assertArrayHasKey('/Parent', $page1[1][1]);
        $this->assertArrayHasKey('/Resources', $page1[1][1]);
        $this->assertArrayHasKey('/Rotate', $page1[1][1]);
        $this->assertArrayHasKey('/TrimBox', $page1[1][1]);
        $this->assertArrayHasKey('/Type', $page1[1][1]);

        /* Check ArtBox */
        $artbox = $page1[1][1]['/ArtBox'];
        $this->assertEquals(6, $artbox[0]);

        $this->assertEquals(1, $artbox[1][0][0]);
        $this->assertEquals(0, $artbox[1][0][1]);

        $this->assertEquals(12, $artbox[1][1][0]);
        $this->assertEquals(0.071, $artbox[1][1][1]);

        $this->assertEquals(12, $artbox[1][2][0]);
        $this->assertEquals(595.02, $artbox[1][2][1]);

        $this->assertEquals(12, $artbox[1][3][0]);
        $this->assertEquals(841.789, $artbox[1][3][1]);

        /* Check BleedBox */
        $bleedbox = $page1[1][1]['/BleedBox'];
        $this->assertEquals(6, $bleedbox[0]);

        $this->assertEquals(1, $bleedbox[1][0][0]);
        $this->assertEquals(0, $bleedbox[1][0][1]);

        $this->assertEquals(12, $bleedbox[1][1][0]);
        $this->assertEquals(0.211, $bleedbox[1][1][1]);

        $this->assertEquals(12, $bleedbox[1][2][0]);
        $this->assertEquals(595.02, $bleedbox[1][2][1]);

        $this->assertEquals(12, $bleedbox[1][3][0]);
        $this->assertEquals(841.929, $bleedbox[1][3][1]);

        /* Check Contents */
        $contents = $page1[1][1]['/Contents'];
        $this->assertEquals(8, $contents[0]);
        $this->assertEquals(18, $contents[1]);
        $this->assertEquals(0, $contents[2]);

        /* Check CropBox */
        $cropbox = $page1[1][1]['/CropBox'];
        $this->assertEquals(6, $cropbox[0]);

        $this->assertEquals(1, $cropbox[1][0][0]);
        $this->assertEquals(0, $cropbox[1][0][1]);

        $this->assertEquals(1, $cropbox[1][1][0]);
        $this->assertEquals(0, $cropbox[1][1][1]);

        $this->assertEquals(12, $cropbox[1][2][0]);
        $this->assertEquals(595.22, $cropbox[1][2][1]);

        $this->assertEquals(1, $cropbox[1][3][0]);
        $this->assertEquals(842, $cropbox[1][3][1]);

        /* Check MediaBox */
        $mediabox = $page1[1][1]['/MediaBox'];
        $this->assertEquals(6, $mediabox[0]);

        $this->assertEquals(1, $mediabox[1][0][0]);
        $this->assertEquals(0, $mediabox[1][0][1]);

        $this->assertEquals(1, $mediabox[1][1][0]);
        $this->assertEquals(0, $mediabox[1][1][1]);

        $this->assertEquals(12, $mediabox[1][2][0]);
        $this->assertEquals(595.22, $mediabox[1][2][1]);

        $this->assertEquals(1, $mediabox[1][3][0]);
        $this->assertEquals(842, $mediabox[1][3][1]);

        /* Check Parent */
        $parent = $page1[1][1]['/Parent'];
        $this->assertEquals(8, $parent[0]);
        $this->assertEquals(6, $parent[1]);
        $this->assertEquals(0, $parent[2]);

        /* Check Resources */
        $resources = $page1[1][1]['/Resources'];
        $this->assertEquals(8, $resources[0]);
        $this->assertEquals(12, $resources[1]);
        $this->assertEquals(0, $resources[2]);

        /* Check Rotate */
        $rotate = $page1[1][1]['/Rotate'];
        $this->assertEquals(1, $rotate[0]);
        $this->assertEquals(0, $rotate[1]);

        /* Check TrimBox */
        $trimbox = $page1[1][1]['/TrimBox'];
        $this->assertEquals(6, $trimbox[0]);

        $this->assertEquals(1, $trimbox[1][0][0]);
        $this->assertEquals(0, $trimbox[1][0][1]);

        $this->assertEquals(12, $trimbox[1][1][0]);
        $this->assertEquals(0.211, $trimbox[1][1][1]);

        $this->assertEquals(12, $trimbox[1][2][0]);
        $this->assertEquals(595.02, $trimbox[1][2][1]);

        $this->assertEquals(12, $trimbox[1][3][0]);
        $this->assertEquals(841.929, $trimbox[1][3][1]);

        /* Check Type */
        $type = $page1[1][1]['/Type'];
        $this->assertEquals(2, $type[0]);
        $this->assertEquals('/Page', $type[1]);

        /* Check the basics for page 2 */
        $this->assertArrayHasKey('/ArtBox', $page2[1][1]);
        $this->assertArrayHasKey('/BleedBox', $page2[1][1]);
        $this->assertArrayHasKey('/Contents', $page2[1][1]);
        $this->assertArrayHasKey('/CropBox', $page2[1][1]);
        $this->assertArrayHasKey('/MediaBox', $page2[1][1]);
        $this->assertArrayHasKey('/Parent', $page2[1][1]);
        $this->assertArrayHasKey('/Resources', $page2[1][1]);
        $this->assertArrayHasKey('/Rotate', $page2[1][1]);
        $this->assertArrayHasKey('/TrimBox', $page2[1][1]);
        $this->assertArrayHasKey('/Type', $page2[1][1]);
    }

    /**
     * Check the standardised FPDI PDF _getPageResources method
     * From fpdi_pdf_parser.php
     * @since 6.1.0
     */
    public function test_fpdi_get_page_resources()
    {

        $_pages = $this->getProperty( $this->fpdi_parser, '_pages' );
        $resources = $this->invokeMethod( $this->fpdi_parser, '_getPageResources', array( $_pages[0] ) );

        /* Run our tests */
        $this->assertEquals(5, $resources[0]);
        $this->assertTrue(is_array($resources[1]));

        $this->assertArrayHasKey('/ColorSpace', $resources[1]);
        $this->assertArrayHasKey('/ExtGState', $resources[1]);
        $this->assertArrayHasKey('/Font', $resources[1]);
        $this->assertArrayHasKey('/ProcSet', $resources[1]);
        $this->assertArrayHasKey('/XObject', $resources[1]);

        /* Test Color Space */
        $color = $resources[1]['/ColorSpace'];
        $this->assertEquals(5, $color[0]);

        $this->assertEquals(8, $color[1]['/Cs6'][0]);
        $this->assertEquals(21, $color[1]['/Cs6'][1]);
        $this->assertEquals(0, $color[1]['/Cs6'][2]);

        $this->assertEquals(8, $color[1]['/Cs8'][0]);
        $this->assertEquals(14, $color[1]['/Cs8'][1]);
        $this->assertEquals(0, $color[1]['/Cs8'][2]);

        $this->assertEquals(8, $color[1]['/Cs9'][0]);
        $this->assertEquals(15, $color[1]['/Cs9'][1]);
        $this->assertEquals(0, $color[1]['/Cs9'][2]);

        /* Test ExtGState */
        $ext = $resources[1]['/ExtGState'];
        $this->assertEquals(5, $ext[0]);

        $this->assertEquals(8, $ext[1]['/GS1'][0]);
        $this->assertEquals(16, $ext[1]['/GS1'][1]);
        $this->assertEquals(0, $ext[1]['/GS1'][2]);

        /* Test Font */
        $font = $resources[1]['/Font'];
        $this->assertEquals(5, $font[0]);

        $this->assertEquals(8, $font[1]['/TT2'][0]);
        $this->assertEquals(13, $font[1]['/TT2'][1]);
        $this->assertEquals(0, $font[1]['/TT2'][2]);

        $this->assertEquals(8, $font[1]['/TT4'][0]);
        $this->assertEquals(19, $font[1]['/TT4'][1]);
        $this->assertEquals(0, $font[1]['/TT4'][2]);

        /* Test ProcSet */
        $proc = $resources[1]['/ProcSet'];
        $this->assertEquals(6, $proc[0]);

        $this->assertEquals(2, $proc[1][0][0]);
        $this->assertEquals('/PDF', $proc[1][0][1]);

        $this->assertEquals(2, $proc[1][1][0]);
        $this->assertEquals('/Text', $proc[1][1][1]);

        $this->assertEquals(2, $proc[1][2][0]);
        $this->assertEquals('/ImageC', $proc[1][2][1]);

        $this->assertEquals(2, $proc[1][3][0]);
        $this->assertEquals('/ImageI', $proc[1][3][1]);

        /* Test XObject */
        $x = $resources[1]['/XObject'];
        $this->assertEquals(5, $x[0]);

        $this->assertEquals(8, $x[1]['/Im1'][0]);
        $this->assertEquals(22, $x[1]['/Im1'][1]);
        $this->assertEquals(0, $x[1]['/Im1'][2]);

        /**
         * Check for basics on Page 2
         */
        $resources = $this->invokeMethod( $this->fpdi_parser, '_getPageResources', array( $_pages[1] ) );

        /* Run our tests */
        $this->assertEquals(5, $resources[0]);
        $this->assertTrue(is_array($resources[1]));

        $this->assertArrayHasKey('/ColorSpace', $resources[1]);
        $this->assertArrayHasKey('/ExtGState', $resources[1]);
        $this->assertArrayHasKey('/Font', $resources[1]);
        $this->assertArrayHasKey('/ProcSet', $resources[1]);
        $this->assertArrayHasKey('/XObject', $resources[1]);
    }

    /**
     * Check the standardised FPDI PDF getContent() method
     * From fpdi_pdf_parser.php
     * @since 6.1.0
     */
    public function test_get_content()
    {
        /* Set Page 1*/
        $this->fpdi_parser->setPageNo(1);

        /* Get contents */
        $content = $this->fpdi_parser->getContent();

        /* Check if contains specific text */
        $this->assertNotSame(false, strpos($content, 'MAIN HEADING'));
        $this->assertNotSame(false, strpos($content, 'Secondary Heading'));
        $this->assertNotSame(false, strpos($content, 'Blue Liquid Designs'));
        $this->assertSame(false, strpos($content, 'String Not In PDF'));
    }

    /**
     * Check the standardised FPDI PDF getPageBox() method
     * From fpdi_pdf_parser.php
     * @since 6.1.0
     */
    public function test_get_page_box()
    {
        $_pages = $this->getProperty( $this->fpdi_parser, '_pages' );
        $box = $this->invokeMethod( $this->fpdi_parser, '_getPageBox', array( $_pages[0], '/TrimBox', _MPDFK ) );

        $this->assertEquals('0', $box['x']);
        $this->assertEquals('0.074436111111111', $box['y']);
        $this->assertEquals('209.90983333333', $box['w']);
        $this->assertEquals('296.93940555556', $box['h']);
    }

    /**
     * Check the standardised FPDI PDF getPageBoxes() method
     * From fpdi_pdf_parser.php
     * @since 6.1.0
     */
    public function test_get_page_boxes()
    {
        $boxes = $this->fpdi_parser->getPageBoxes(1, _MPDFK);

        $this->assertArrayHasKey('/MediaBox', $boxes);
        $this->assertArrayHasKey('/CropBox', $boxes);
        $this->assertArrayHasKey('/BleedBox', $boxes);
        $this->assertArrayHasKey('/TrimBox', $boxes);
        $this->assertArrayHasKey('/ArtBox', $boxes);
    }

    /**
     * Check the standardised FPDI PDF getPageRotation() method
     * From fpdi_pdf_parser.php
     * @since 6.1.0
     */
    public function test_get_page_rotation()
    {
        $rotation = $this->fpdi_parser->getPageRotation(1);

        $this->assertEquals(1, $rotation[0]);
        $this->assertEquals(0, $rotation[1]);
    }
}