From 748ea8c9c9cf414201449aeec1c5b307faa3a3fe Mon Sep 17 00:00:00 2001
From: philipp lang <philipp@aweos.de>
Date: Thu, 27 Oct 2022 02:26:32 +0200
Subject: [PATCH] --wip-- [skip ci]

---
 src/Compiler.php     | 44 ++++++++++++++++++++++++++++---
 src/CompilerFake.php | 62 ++++++++++++++++++++++++++++++++++++++++++++
 src/CompilerSpy.php  |  6 ++---
 src/Document.php     |  8 ++++++
 src/Tex.php          |  2 +-
 5 files changed, 115 insertions(+), 7 deletions(-)
 create mode 100644 src/CompilerFake.php

diff --git a/src/Compiler.php b/src/Compiler.php
index 9b2ee96..b92f6e4 100644
--- a/src/Compiler.php
+++ b/src/Compiler.php
@@ -2,10 +2,48 @@
 
 namespace Zoomyboy\Tex;
 
-class Compiler
+use Illuminate\Contracts\Support\Responsable;
+use Illuminate\Http\File;
+use Illuminate\Support\Str;
+
+class Compiler implements Responsable
 {
-    public function compile(Document $document): string
+    public File $file;
+
+    public function compile(Document $document): self
     {
-        return '/tmp/file.pdf';
+        $filename = $document->filename();
+        $dir = Str::random(32);
+
+        $contents = view()->make($document->view(), get_object_vars($document))->render();
+
+        mkdir('/tmp/'.$dir);
+        file_put_contents('/tmp/'.$dir.'/'.$document->filename().'.tex', $contents);
+
+        if ($document->template()) {
+            $templatePath = resource_path("views/tex/templates/{$document->template()}");
+            exec('cp '.$templatePath.'/* /tmp/'.$dir);
+        }
+
+        $command = 'cd /tmp/'.$dir;
+        $command .= ' && '.$document->getEngine().' --halt-on-error '.$document->filename().'.tex';
+        $command .= ' && '.$document->getEngine().' --halt-on-error '.$document->filename().'.tex';
+        exec($command, $output, $returnVar);
+
+        if (file_exists('/tmp/'.$dir.'/'.$document->filename().'.pdf')) {
+            $this->file = new File('/tmp/'.$dir.'/'.$document->filename().'.pdf');
+        } else {
+            throw new Exception('Compilation failed');
+        }
+
+        return $this;
+    }
+
+    public function toResponse($request)
+    {
+        return response()->file($this->file->getRealPath(), [
+            'Content-Type' => 'application/pdf',
+            'Content-Disposition' => "inline; filename=\"{$this->file->getFilename()}\"",
+        ]);
     }
 }
diff --git a/src/CompilerFake.php b/src/CompilerFake.php
new file mode 100644
index 0000000..7054c27
--- /dev/null
+++ b/src/CompilerFake.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Zoomyboy\Tex;
+
+use Illuminate\Http\File;
+use Illuminate\Http\UploadedFile;
+use Illuminate\Support\Collection;
+use PHPUnit\Framework\Assert;
+
+class CompilerFake extends Compiler
+{
+    /**
+     * @var array<int, Document>
+     */
+    private array $compiledDocuments = [];
+
+    /**
+     * @param class-string<Document>   $documentClass
+     * @param callable(Document): bool $check
+     */
+    public function assertCompiled(string $documentClass, callable $check): void
+    {
+        $compilations = $this->getCompilations($documentClass);
+        Assert::assertFalse(
+            $compilations->isEmpty(),
+            'The TeX Document "'.$documentClass.'" has not been compiled at all.'
+        );
+
+        Assert::assertFalse(
+            $compilations->isEmpty(),
+            'The TeX Document "'.$documentClass.'" has not been compiled.'
+        );
+
+        $validDocuments = $compilations->filter(fn ($compilation) => $check($compilation));
+
+        Assert::assertNotEmpty($validDocuments, 'Failed that TeX Document "'.$documentClass.'" has been compiled with given check.');
+    }
+
+    /**
+     * @param class-string<Document> $documentClass
+     *
+     * @return Collection<int, Document>
+     */
+    protected function getCompilations(string $documentClass): Collection
+    {
+        return collect($this->compiledDocuments)->filter(fn ($rendered) => get_class($rendered) === $documentClass);
+    }
+
+    public function compile(Document $document): self
+    {
+        $path = '/tmp/'.$document->filename().'.pdf';
+        $file = UploadedFile::fake()->create($document->filename().'.pdf', 100, 'application/pdf');
+
+        file_put_contents($path, $file->get());
+
+        $this->file = new File($path, true);
+
+        $this->compiledDocuments[] = $document;
+
+        return $this;
+    }
+}
diff --git a/src/CompilerSpy.php b/src/CompilerSpy.php
index 7c29137..a2ce69e 100644
--- a/src/CompilerSpy.php
+++ b/src/CompilerSpy.php
@@ -49,12 +49,12 @@ class CompilerSpy
         return collect($this->compiledDocuments)->filter(fn ($rendered) => get_class($rendered) === $documentClass);
     }
 
-    public function compile(Document $document): string
+    public function compile(Document $document): Compiler
     {
-        $filename = static::$actualCompiler->compile($document);
+        $compiler = static::$actualCompiler->compile($document);
 
         $this->compiledDocuments[] = $document;
 
-        return $filename;
+        return $compiler;
     }
 }
diff --git a/src/Document.php b/src/Document.php
index 29e7228..c2f4119 100644
--- a/src/Document.php
+++ b/src/Document.php
@@ -6,6 +6,14 @@ use PHPUnit\Framework\Assert;
 
 abstract class Document
 {
+    abstract public function filename(): string;
+
+    abstract public function view(): string;
+
+    abstract public function template(): ?string;
+
+    abstract public function getEngine(): string;
+
     public function assertHasContent(string $content): void
     {
         Assert::assertStringContainsString(
diff --git a/src/Tex.php b/src/Tex.php
index fabbecc..825f64d 100644
--- a/src/Tex.php
+++ b/src/Tex.php
@@ -5,7 +5,7 @@ namespace Zoomyboy\Tex;
 use Illuminate\Support\Facades\Facade;
 
 /**
- * @method static void assertCompiled(class-string<Document> $documentClass, callable(Document): bool $check)
+ * @method static void assertCompiled(class-string<Document> $documentClass, Closure(Document): bool $check)
  * @method static void compile(Document $document)
  */
 class Tex extends Facade