feat(core): implement frontends for all backends

.gitignore

@@ -1,2 +1,4 @@
 /composer.lock
 /vendor
+/.phpunit.result.cache
+/.php-cs-fixer.cache

src/Backend/Dompdf/DompdfAdapter.php

@@ -32,10 +32,10 @@ public function __construct(
         $this->options = $options;
     }
 
-    public function generateFromDOMDocument(DOMDocument $DOMDocument): StreamInterface
+    public function generateFromDOMDocument(DOMDocument $document): StreamInterface
     {
         $dompdf = $this->buildDompdf();
-        $dompdf->loadDOM($DOMDocument);
+        $dompdf->loadDOM($document);
 
         return $this->createStream($dompdf);
     }

src/Core/Backend/Adapter/StreamToPdf.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KNPLabs\Snappy\Core\Backend\Adapter;
+
+use KNPLabs\Snappy\Core\Backend\Adapter;
+use Psr\Http\Message\StreamInterface;
+
+interface StreamToPdf extends Adapter
+{
+    public function generateFromStream(StreamInterface $stream): StreamInterface;
+}

src/Core/Filesystem/SplResourceInfo.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KNPLabs\Snappy\Core\Filesystem;
+
+final class SplResourceInfo extends \SplFileInfo
+{
+    public static function fromTmpFile(): self
+    {
+        return new self(tmpfile());
+    }
+
+    /**
+     * @param resource $resource
+     */
+    public function __construct(public readonly mixed $resource)
+    {
+        parent::__construct(stream_get_meta_data($this->resource)['uri']);
+    }
+}

src/Core/Frontend/DOMDocumentToPdf.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KNPLabs\Snappy\Core\Frontend;
+
+use DOMDocument;
+use KNPLabs\Snappy\Core\Backend\Adapter;
+use KNPLabs\Snappy\Core\Backend\Options;
+use KNPLabs\Snappy\Core\Filesystem\SplFileInfo;
+use KNPLabs\Snappy\Core\Filesystem\SplResourceInfo;
+use KNPLabs\Snappy\Core\Stream\FileStream;
+use Psr\Http\Message\StreamFactoryInterface;
+use Psr\Http\Message\StreamInterface;
+
+final class DOMDocumentToPdf implements Adapter\DOMDocumentToPdf
+{
+    public function __construct(private readonly Adapter $adapter, private readonly StreamFactoryInterface $streamFactory)
+    {
+    }
+
+    public function withOptions(Options|callable $options): static
+    {
+        return new self(
+            $this->adapter->withOptions($options),
+            $this->streamFactory,
+        );
+    }
+
+    public function generateFromDOMDocument(DOMDocument $document): StreamInterface
+    {
+        if ($this->adapter instanceof Adapter\DOMDocumentToPdf) {
+            return $this->adapter->generateFromDOMDocument($document);
+        }
+
+        $html = $document->saveHTML();
+
+        if (false === $html) {
+            throw new \Exception();
+        }
+
+        if ($this->adapter instanceof Adapter\HtmlToPdf) {
+            return $this->adapter->generateFromHtml($html);
+        }
+
+        if ($this->adapter instanceof Adapter\StreamToPdf) {
+            return $this->adapter->generateFromStream(
+                $this->streamFactory->createStream($html)
+            );
+        }
+
+        if ($this->adapter instanceof Adapter\HtmlFileToPdf) {
+            $file = SplResourceInfo::fromTmpFile();
+
+            fwrite($file->resource, $html);
+
+            return $this->adapter->generateFromHtmlFile($file);
+        }
+
+        throw new \Exception();
+    }
+}

src/Core/Frontend/HtmlFileToPdf.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KNPLabs\Snappy\Core\Frontend;
+
+use DOMDocument;
+use KNPLabs\Snappy\Core\Backend\Adapter;
+use KNPLabs\Snappy\Core\Backend\Options;
+use KNPLabs\Snappy\Core\Stream\FileStream;
+use Psr\Http\Message\StreamFactoryInterface;
+use Psr\Http\Message\StreamInterface;
+use SplFileInfo;
+
+final class HtmlFileToPdf implements Adapter\HtmlFileToPdf
+{
+    public function __construct(private readonly Adapter $adapter, private readonly StreamFactoryInterface $streamFactory)
+    {
+
+    }
+
+    public function withOptions(Options|callable $options): static
+    {
+        return new self(
+            $this->adapter->withOptions($options),
+            $this->streamFactory
+        );
+    }
+
+    public function generateFromHtmlFile(SplFileInfo $file): StreamInterface
+    {
+        if ($this->adapter instanceof Adapter\HtmlFileToPdf) {
+            return $this->adapter->generateFromHtmlFile($file);
+        }
+
+        if ($this->adapter instanceof Adapter\StreamToPdf) {
+            return $this->adapter->generateFromStream(
+                new FileStream(
+                    $file,
+                    $this->streamFactory->createStreamFromFile($file->getPathname()),
+                ),
+            );
+        }
+
+        if ($this->adapter instanceof Adapter\HtmlToPdf) {
+            $html = file_get_contents($file->getPathname());
+
+            if (false === $html) {
+                throw new \Exception("Unable to read content of {$file->getPathname()}.");
+            }
+
+            return $this->adapter->generateFromHtml($html);
+        }
+
+        if ($this->adapter instanceof Adapter\DOMDocumentToPdf) {
+            $document = new \DOMDocument();
+            $document->loadHTMLFile($file->getPathname());
+
+            return $this->adapter->generateFromDOMDocument($document);
+        }
+
+        throw new \Exception();
+    }
+}

src/Core/Frontend/HtmlToPdf.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KNPLabs\Snappy\Core\Frontend;
+
+use DOMDocument;
+use KNPLabs\Snappy\Core\Backend\Adapter;
+use KNPLabs\Snappy\Core\Backend\Options;
+use KNPLabs\Snappy\Core\Filesystem\SplResourceInfo;
+use KNPLabs\Snappy\Core\Stream\FileStream;
+use Psr\Http\Message\StreamFactoryInterface;
+use Psr\Http\Message\StreamInterface;
+
+final class HtmlToPdf implements Adapter\HtmlToPdf
+{
+    public function __construct(private readonly Adapter $adapter, private readonly StreamFactoryInterface $streamFactory)
+    {
+
+    }
+
+    public function withOptions(Options|callable $options): static
+    {
+        return new self(
+            $this->adapter->withOptions($options),
+            $this->streamFactory
+        );
+    }
+
+    public function generateFromHtml(string $html): StreamInterface
+    {
+        if ($this->adapter instanceof Adapter\HtmlToPdf) {
+            return $this->adapter->generateFromHtml($html);
+        }
+
+        if ($this->adapter instanceof Adapter\DOMDocumentToPdf) {
+            $document = new \DOMDocument();
+            $document->loadHTML($html);
+
+            return $this->adapter->generateFromDOMDocument($document);
+        }
+
+        if ($this->adapter instanceof Adapter\StreamToPdf) {
+            return $this->adapter->generateFromStream(
+                $this->streamFactory->createStream($html),
+            );
+        }
+
+        if ($this->adapter instanceof Adapter\HtmlFileToPdf) {
+            $file = SplResourceInfo::fromTmpFile();
+
+            fwrite($file->resource, $html);
+
+            return $this->adapter->generateFromHtmlFile($file);
+        }
+
+        throw new \Exception();
+    }
+
+}

src/Core/Frontend/StreamToPdf.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KNPLabs\Snappy\Core\Frontend;
+
+use DOMDocument;
+use KNPLabs\Snappy\Core\Backend\Adapter;
+use KNPLabs\Snappy\Core\Backend\Options;
+use KNPLabs\Snappy\Core\Filesystem\SplResourceInfo;
+use KNPLabs\Snappy\Core\Stream\FileStream;
+use Psr\Http\Message\StreamFactoryInterface;
+use Psr\Http\Message\StreamInterface;
+use SplFileInfo;
+
+final class StreamToPdf implements Adapter\StreamToPdf
+{
+    public function __construct(private readonly Adapter $adapter, private readonly StreamFactoryInterface $streamFactory)
+    {
+
+    }
+
+    public function withOptions(Options|callable $options): static
+    {
+        return new self(
+            $this->adapter->withOptions($options),
+            $this->streamFactory
+        );
+    }
+
+    public function generateFromStream(StreamInterface  $stream): StreamInterface
+    {
+        if ($this->adapter instanceof Adapter\StreamToPdf) {
+            return $this->adapter->generateFromStream($stream);
+        }
+
+        if ($this->adapter instanceof Adapter\HtmlToPdf) {
+            return $this->adapter->generateFromHtml((string) $stream);
+        }
+
+        if ($this->adapter instanceof Adapter\HtmlFileToPdf) {
+            $file = SplResourceInfo::fromTmpFile();
+
+            $input = $stream->detach();
+
+            if (null === $input) {
+                throw new \Exception('Unable to get resource from stream.');
+            }
+
+            stream_copy_to_stream($input, $file->resource);
+
+            return $this->adapter->generateFromHtmlFile($file);
+        }
+
+        if ($this->adapter instanceof Adapter\DOMDocumentToPdf) {
+            $document = new \DOMDocument();
+            $document->loadHTML((string) $stream);
+
+            return $this->adapter->generateFromDOMDocument($document);
+        }
+
+        throw new \Exception();
+    }
+}