<?php

require_once 'Swift/Tests/SwiftUnitTestCase.php';
require_once 'Swift/Mime/ContentEncoder/NativeQpContentEncoder.php';
require_once 'Swift/CharacterStream/ArrayCharacterStream.php';
require_once 'Swift/CharacterReaderFactory/SimpleCharacterReaderFactory.php';
require_once 'Swift/ByteStream/ArrayByteStream.php';

class Swift_Mime_ContentEncoder_NativeQpContentEncoderAcceptanceTest
    extends Swift_Tests_SwiftUnitTestCase
{
    /**
     * @var Swift_Mime_ContentEncoder_NativeQpContentEncoder
     */
    protected $_encoder;

    public function setUp()
    {
        $this->_samplesDir = realpath(dirname(__FILE__) . '/../../../../_samples/charsets');
        $this->_encoder = new Swift_Mime_ContentEncoder_NativeQpContentEncoder();
    }

    public function testEncodingAndDecodingSamples()
    {
        $sampleFp = opendir($this->_samplesDir);
        while (false !== $encodingDir = readdir($sampleFp)) {
            if (substr($encodingDir, 0, 1) == '.') {
                continue;
            }

            $sampleDir = $this->_samplesDir . '/' . $encodingDir;

            if (is_dir($sampleDir)) {

                $fileFp = opendir($sampleDir);
                while (false !== $sampleFile = readdir($fileFp)) {
                    if (substr($sampleFile, 0, 1) == '.') {
                        continue;
                    }

                    $text = file_get_contents($sampleDir . '/' . $sampleFile);

                    $os = new Swift_ByteStream_ArrayByteStream();
                    $os->write($text);

                    $is = new Swift_ByteStream_ArrayByteStream();
                    $this->_encoder->encodeByteStream($os, $is);

                    $encoded = '';
                    while (false !== $bytes = $is->read(8192)) {
                        $encoded .= $bytes;
                    }

                    $this->assertEqual(
                        quoted_printable_decode($encoded), $text,
                        '%s: Encoded string should decode back to original string for sample ' .
                        $sampleDir . '/' . $sampleFile
                        );
                }
                closedir($fileFp);
            }

        }
        closedir($sampleFp);

    }

    public function testEncodingAndDecodingSamplesFromDiConfiguredInstance()
    {
        $encoder = $this->_createEncoderFromContainer();
        $this->assertSame('=C3=A4=C3=B6=C3=BC=C3=9F', $encoder->encodeString('äöüß'));
    }

    public function testCharsetChangeNotImplemented()
    {
        $this->_encoder->charsetChanged('utf-8');
        $this->expectException(new RuntimeException('Charset "charset" not supported. NativeQpContentEncoder only supports "utf-8"'));
        $this->_encoder->charsetChanged('charset');
    }

    public function testGetName()
    {
        $this->assertSame('quoted-printable', $this->_encoder->getName());
    }

    // -- Private Methods

    private function _createEncoderFromContainer()
    {
        return Swift_DependencyContainer::getInstance()
            ->lookup('mime.nativeqpcontentencoder')
            ;
    }
}