Refactored thumbnail system

TODO

@@ -6,11 +6,6 @@ everything related to posts:
         - fav count
         - score
         - comment count
-        - fix broken thumbnails if no external software is installed
-
-    - uploading post
-        - remove hard dependency on gd2 in PostService::setContentFromString
-          (getimagesizefromstring)
 
     - single post view
         - post content

public_html/data/.gitignore

@@ -1,2 +1 @@
 posts
-thumbnails

public_html/data/thumbnails/.gitignore

@@ -0,0 +1,3 @@
+*
+!.gitignore
+!blank.png

src/Controllers/PostContentController.php

@@ -29,18 +29,19 @@ final class PostContentController extends AbstractController
 	public function getPostContent($postName)
 	{
 		$post = $this->postService->getByName($postName);
-		$source = $post->getContentPath();
-		$this->fileService->serve($source);
+		$this->fileService->serve($post->getContentPath());
 	}
 
 	public function getPostThumbnail($postName, $size)
 	{
 		$post = $this->postService->getByName($postName);
-		$source = $post->getThumbnailSourceContentPath();
-		if (!$this->fileService->exists($source))
-			$source = $post->getContentPath();
 
-		$sizedSource = $this->thumbnailService->getOrGenerate($source, $size, $size);
-		$this->fileService->serve($sizedSource);
+		$sourceName = $post->getThumbnailSourceContentPath();
+		if (!$this->fileService->exists($sourceName))
+			$sourceName = $post->getContentPath();
+
+		$this->thumbnailService->generateIfNeeded($sourceName, $size, $size);
+		$thumbnailName = $this->thumbnailService->getThumbnailName($sourceName, $size, $size);
+		$this->fileService->serve($thumbnailName);
 	}
 }

src/Controllers/UserAvatarController.php

@@ -38,7 +38,7 @@ final class UserAvatarController extends AbstractController
 				break;
 
 			case \Szurubooru\Entities\User::AVATAR_STYLE_BLANK:
-				$this->serveFromFile($this->getBlankAvatarSourcePath(), $size);
+				$this->serveFromFile($this->getBlankAvatarSourceContentPath(), $size);
 				break;
 
 			case \Szurubooru\Entities\User::AVATAR_STYLE_MANUAL:
@@ -46,7 +46,7 @@ final class UserAvatarController extends AbstractController
 				break;
 
 			default:
-				$this->serveFromFile($this->getBlankAvatarSourcePath(), $size);
+				$this->serveFromFile($this->getBlankAvatarSourceContentPath(), $size);
 				break;
 		}
 	}
@@ -56,17 +56,15 @@ final class UserAvatarController extends AbstractController
 		$this->httpHelper->redirect($url);
 	}
 
-	private function serveFromFile($file, $size)
+	private function serveFromFile($sourceName, $size)
 	{
-		if (!$this->fileService->exists($file))
-			$file = $this->getBlankAvatarSourcePath();
-
-		$sizedFile = $this->thumbnailService->getOrGenerate($file, $size, $size);
-		$this->fileService->serve($sizedFile);
+		$this->thumbnailService->generateIfNeeded($sourceName, $size, $size);
+		$thumbnailName = $this->thumbnailService->getThumbnailName($sourceName, $size, $size);
+		$this->fileService->serve($thumbnailName);
 	}
 
-	private function getBlankAvatarSourcePath()
+	private function getBlankAvatarSourceContentPath()
 	{
-		return 'avatars' . DIRECTORY_SEPARATOR . 'blank.png';
+		return 'avatars/blank.png';
 	}
 }

src/Helpers/ProgramExecutor.php

@@ -0,0 +1,26 @@
+<?php
+namespace Szurubooru\Helpers;
+
+class ProgramExecutor
+{
+	public static function run($programName, $arguments)
+	{
+		$quotedArguments = array_map('escapeshellarg', $arguments);
+
+		$cmd = sprintf('%s %s 2>&1', $programName, implode(' ', $quotedArguments));
+		return exec($cmd);
+	}
+
+	public static function isProgramAvailable($programName)
+	{
+		if (PHP_OS === 'WINNT')
+		{
+			exec('where "' . $programName . '" 2>&1 >nul', $trash, $exitCode);
+		}
+		else
+		{
+			exec('command -v "' . $programName . '" >/dev/null 2>&1', $trash, $exitCode);
+		}
+		return $exitCode === 0;
+	}
+}

src/Services/ImageManipulation/GdImageManipulator.php

@@ -0,0 +1,93 @@
+<?php
+namespace Szurubooru\Services\ImageManipulation;
+
+class GdImageManipulator implements IImageManipulator
+{
+	public function loadFromBuffer($source)
+	{
+		try
+		{
+			return imagecreatefromstring($source);
+		}
+		catch (\Exception $e)
+		{
+			return null;
+		}
+	}
+
+	public function getImageWidth($imageResource)
+	{
+		return imagesx($imageResource);
+	}
+
+	public function getImageHeight($imageResource)
+	{
+		return imagesy($imageResource);
+	}
+
+	public function resizeImage(&$imageResource, $width, $height)
+	{
+		$targetImageResource = imagecreatetruecolor($width, $height);
+
+		imagecopyresampled(
+			$targetImageResource,
+			$imageResource,
+			0, 0,
+			0, 0,
+			$width,
+			$height,
+			imagesx($imageResource),
+			imagesy($imageResource));
+
+		$imageResource = $targetImageResource;
+	}
+
+	public function cropImage(&$imageResource, $width, $height, $originX, $originY)
+	{
+		if ($originX + $width > imagesx($imageResource))
+			$width = imagesx($imageResource) - $originX;
+		if ($originY + $height > imagesy($imageResource))
+			$height = imagesy($imageResource) - $originY;
+
+		if ($originX < 0)
+			$width = $width + $originX;
+		if ($originY < 0)
+			$height = $height + $originY;
+
+		if ($width < 1)
+			$width = 1;
+		if ($height < 1)
+			$height = 1;
+
+		$imageResource = imagecrop($imageResource, [
+			'x' => $originX,
+			'y' => $originY,
+			'width' => $width,
+			'height' => $height]);
+	}
+
+	public function saveToBuffer($imageResource, $format)
+	{
+		ob_start();
+
+		switch ($format)
+		{
+			case self::FORMAT_JPEG:
+				imagejpeg($imageResource);
+				break;
+
+			case self::FORMAT_PNG:
+				imagepng($imageResource);
+				break;
+
+			default:
+		}
+
+		$buffer = ob_get_contents();
+		ob_end_clean();
+
+		if (!$buffer)
+			throw new \InvalidArgumentException('Not supported');
+		return $buffer;
+	}
+}

src/Services/ImageManipulation/IImageManipulator.php

@@ -0,0 +1,20 @@
+<?php
+namespace Szurubooru\Services\ImageManipulation;
+
+interface IImageManipulator
+{
+	const FORMAT_JPEG = 0;
+	const FORMAT_PNG = 1;
+
+	public function loadFromBuffer($source);
+
+	public function getImageWidth($imageResource);
+
+	public function getImageHeight($imageResource);
+
+	public function resizeImage(&$imageResource, $width, $height);
+
+	public function cropImage(&$imageResource, $width, $height, $originX, $originY);
+
+	public function saveToBuffer($imageResource, $format);
+}

src/Services/ImageManipulation/ImageManipulator.php

@@ -0,0 +1,55 @@
+<?php
+namespace Szurubooru\Services\ImageManipulation;
+
+class ImageManipulator implements IImageManipulator
+{
+	private $strategy;
+
+	public function __construct(
+		\Szurubooru\Services\ImageManipulation\ImagickImageManipulator $imagickImageManipulator,
+		\Szurubooru\Services\ImageManipulation\GdImageManipulator $gdImageManipulator)
+	{
+		if (extension_loaded('imagick'))
+		{
+			$this->strategy = $imagickImageManipulator;
+		}
+		else if (extension_loaded('gd'))
+		{
+			$this->strategy = $gdImageManipulator;
+		}
+		else
+		{
+			throw new \RuntimeException('Neither imagick or gd image extensions are enabled');
+		}
+	}
+
+	public function loadFromBuffer($source)
+	{
+		return $this->strategy->loadFromBuffer($source);
+	}
+
+	public function getImageWidth($imageResource)
+	{
+		return $this->strategy->getImageWidth($imageResource);
+	}
+
+	public function getImageHeight($imageResource)
+	{
+		return $this->strategy->getImageHeight($imageResource);
+	}
+
+	public function resizeImage(&$imageResource, $width, $height)
+	{
+		return $this->strategy->resizeImage($imageResource, $width, $height);
+	}
+
+	public function cropImage(&$imageResource, $width, $height, $originX, $originY)
+	{
+		return $this->strategy->cropImage($imageResource, $width, $height, $originX, $originY);
+	}
+
+	public function saveToBuffer($source, $format)
+	{
+		return $this->strategy->saveToBuffer($source, $format);
+	}
+}

src/Services/ImageManipulation/ImagickImageManipulator.php

@@ -0,0 +1,60 @@
+<?php
+namespace Szurubooru\Services\ImageManipulation;
+
+class ImagickImageManipulator implements IImageManipulator
+{
+	public function loadFromBuffer($source)
+	{
+		try
+		{
+			$image = new \Imagick();
+			$image->readImageBlob($source);
+			$image = $image->coalesceImages();
+			return $image;
+		}
+		catch (\Exception $e)
+		{
+			return null;
+		}
+	}
+
+	public function getImageWidth($imageResource)
+	{
+		return $imageResource->getImageWidth();
+	}
+
+	public function getImageHeight($imageResource)
+	{
+		return $imageResource->getImageHeight();
+	}
+
+	public function resizeImage(&$imageResource, $width, $height)
+	{
+		$imageResource->resizeImage($width, $height, \Imagick::FILTER_LANCZOS, 0.9);
+	}
+
+	public function cropImage(&$imageResource, $width, $height, $originX, $originY)
+	{
+		$imageResource->cropImage($width, $height, $originX, $originY);
+		$imageResource->setImagePage(0, 0, 0, 0);
+	}
+
+	public function saveToBuffer($imageResource, $format)
+	{
+		switch ($format)
+		{
+			case self::FORMAT_JPEG:
+				$imageResource->setImageFormat('jpeg');
+				break;
+
+			case self::FORMAT_PNG:
+				$imageResource->setImageFormat('png');
+				break;
+
+			default:
+				throw new \InvalidArgumentException('Not supported');
+		}
+
+		return $imageResource->getImageBlob();
+	}
+}

src/Services/PostService.php

@@ -11,6 +11,7 @@ class PostService
 	private $timeService;
 	private $authService;
 	private $fileService;
+	private $imageManipulator;
 
 	public function __construct(
 		\Szurubooru\Config $config,
@@ -20,7 +21,8 @@ class PostService
 		\Szurubooru\Dao\Services\PostSearchService $postSearchService,
 		\Szurubooru\Services\AuthService $authService,
 		\Szurubooru\Services\TimeService $timeService,
-		\Szurubooru\Services\FileService $fileService)
+		\Szurubooru\Services\FileService $fileService,
+		\Szurubooru\Services\ImageManipulation\ImageManipulator $imageManipulator)
 	{
 		$this->config = $config;
 		$this->validator = $validator;
@@ -30,6 +32,7 @@ class PostService
 		$this->timeService = $timeService;
 		$this->authService = $authService;
 		$this->fileService = $fileService;
+		$this->imageManipulator = $imageManipulator;
 	}
 
 	public function getByNameOrId($postNameOrId)
@@ -137,9 +140,9 @@ class PostService
 
 		$post->setContent($content);
 
-		list ($imageWidth, $imageHeight) = getimagesizefromstring($content);
-		$post->setImageWidth($imageWidth);
-		$post->setImageHeight($imageHeight);
+		$image = $this->imageManipulator->loadFromBuffer($content);
+		$post->setImageWidth($this->imageManipulator->getImageWidth($image));
+		$post->setImageHeight($this->imageManipulator->getImageHeight($image));
 
 		$post->setOriginalFileSize(strlen($content));
 	}

src/Services/ThumbnailGenerators/FlashThumbnailGenerator.php

@@ -3,6 +3,9 @@ namespace Szurubooru\Services\ThumbnailGenerators;
 
 class FlashThumbnailGenerator implements IThumbnailGenerator
 {
+	const PROGRAM_NAME_DUMP_GNASH = 'dump-gnash';
+	const PROGRAM_NAME_SWFRENDER = 'swfrender';
+
 	private $imageThumbnailGenerator;
 
 	public function __construct(ImageThumbnailGenerator $imageThumbnailGenerator)
@@ -10,35 +13,47 @@ class FlashThumbnailGenerator implements IThumbnailGenerator
 		$this->imageThumbnailGenerator = $imageThumbnailGenerator;
 	}
 
-	public function generate($srcPath, $dstPath, $width, $height)
+	public function generate($source, $width, $height, $cropStyle)
 	{
-		if (!file_exists($srcPath))
-			throw new \InvalidArgumentException($srcPath . ' does not exist');
+		$tmpSourcePath = tempnam(sys_get_temp_dir(), 'thumb') . '.dat';
+		$tmpTargetPath = tempnam(sys_get_temp_dir(), 'thumb') . '.png';
+		file_put_contents($tmpSourcePath, $source);
 
-		$tmpPath = tempnam(sys_get_temp_dir(), 'thumb') . '.png';
-
-		$cmd = sprintf(
-			'dump-gnash --screenshot last --screenshot-file "%s" -1 -r1 --max-advances 15 "%s"',
-			$tmpPath,
-			$srcPath);
-		exec($cmd);
-
-		if (file_exists($tmpPath))
+		if (\Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(self::PROGRAM_NAME_DUMP_GNASH))
 		{
-			$this->imageThumbnailGenerator->generate($tmpPath, $dstPath, $width, $height);
-			unlink($tmpPath);
-			return;
+			\Szurubooru\Helpers\ProgramExecutor::run(
+				self::PROGRAM_NAME_DUMP_GNASH,
+				[
+					'--screenshot', 'last',
+					'--screenshot-file', $tmpTargetPath,
+					'-1',
+					'-r1',
+					'--max-advances', '15',
+					$tmpSourcePath,
+				]);
 		}
 
-		exec('swfrender ' . $srcPath . ' -o ' . $tmpPath);
-
-		if (file_exists($tmpPath))
+		if (!file_exists($tmpTargetPath) and \Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(self::PROGRAM_NAME_SWFRENDER))
 		{
-			$this->imageThumbnailGenerator->generate($tmpPath, $dstPath, $width, $height);
-			unlink($tmpPath);
-			return;
+			\Szurubooru\Helpers\ProgramExecutor::run(
+				self::PROGRAM_NAME_SWFRENDER,
+				[
+					'swfrender',
+					$tmpSourcePath,
+					'-o',
+					$tmpTargetPath,
+				]);
 		}
 
-		throw new \RuntimeException('Failed to generate thumbnail');
+		if (!file_exists($tmpTargetPath))
+		{
+			unlink($tmpSourcePath);
+			return null;
+		}
+
+		$ret = $this->imageThumbnailGenerator->generate(file_get_contents($tmpTargetPath), $width, $height, $cropStyle);
+		unlink($tmpSourcePath);
+		unlink($tmpTargetPath);
+		return $ret;
 	}
 }

src/Services/ThumbnailGenerators/IThumbnailGenerator.php

@@ -3,5 +3,8 @@ namespace Szurubooru\Services\ThumbnailGenerators;
 
 interface IThumbnailGenerator
 {
-	public function generate($srcPath, $dstPath, $width, $height);
+	const CROP_OUTSIDE = 0;
+	const CROP_INSIDE = 1;
+
+	public function generate($sourceString, $width, $height, $cropStyle);
 }

src/Services/ThumbnailGenerators/ImageGdThumbnailGenerator.php

@@ -1,98 +0,0 @@
-<?php
-namespace Szurubooru\Services\ThumbnailGenerators;
-
-class ImageGdThumbnailGenerator implements IThumbnailGenerator
-{
-	private $config;
-
-	public function __construct(\Szurubooru\Config $config)
-	{
-		$this->config = $config;
-	}
-
-	public function generate($srcPath, $dstPath, $width, $height)
-	{
-		if (!file_exists($srcPath))
-			throw new \InvalidArgumentException($srcPath . ' does not exist');
-
-		$mime = mime_content_type($srcPath);
-
-		switch ($mime)
-		{
-			case 'image/jpeg':
-				$srcImage = imagecreatefromjpeg($srcPath);
-				break;
-
-			case 'image/png':
-				$srcImage = imagecreatefrompng($srcPath);
-				break;
-
-			case 'image/gif':
-				$srcImage = imagecreatefromgif($srcPath);
-				break;
-
-			default:
-				throw new \Exception('Invalid thumbnail image type');
-		}
-
-		switch ($this->config->misc->thumbnailCropStyle)
-		{
-			case 'outside':
-				$dstImage = $this->cropOutside($srcImage, $width, $height);
-				break;
-			case 'inside':
-				$dstImage = $this->cropInside($srcImage, $width, $height);
-				break;
-			default:
-				throw new \Exception('Unknown thumbnail crop style');
-		}
-
-		imagejpeg($dstImage, $dstPath);
-		imagedestroy($srcImage);
-		imagedestroy($dstImage);
-	}
-
-	private function cropOutside($srcImage, $dstWidth, $dstHeight)
-	{
-		$srcWidth = imagesx($srcImage);
-		$srcHeight = imagesy($srcImage);
-
-		if (($dstHeight / $dstWidth) > ($srcHeight / $srcWidth))
-		{
-			$cropHeight = $srcHeight;
-			$cropWidth = $srcHeight * $dstWidth / $dstHeight;
-		}
-		else
-		{
-			$cropWidth = $srcWidth;
-			$cropHeight = $srcWidth * $dstHeight / $dstWidth;
-		}
-		$cropX = ($srcWidth - $cropWidth) / 2;
-		$cropY = ($srcHeight - $cropHeight) / 2;
-
-		$dstImage = imagecreatetruecolor($dstWidth, $dstHeight);
-		imagecopyresampled($dstImage, $srcImage, 0, 0, $cropX, $cropY, $dstWidth, $dstHeight, $cropWidth, $cropHeight);
-		return $dstImage;
-	}
-
-	private function cropInside($srcImage, $dstWidth, $dstHeight)
-	{
-		$srcWidth = imagesx($srcImage);
-		$srcHeight = imagesy($srcImage);
-
-		if (($dstHeight / $dstWidth) < ($srcHeight / $srcWidth))
-		{
-			$cropHeight = $dstHeight;
-			$cropWidth = $dstHeight * $srcWidth / $srcHeight;
-		}
-		else
-		{
-			$cropWidth = $dstWidth;
-			$cropHeight = $dstWidth * $srcHeight / $srcWidth;
-		}
-
-		$dstImage = imagecreatetruecolor($cropWidth, $cropHeight);
-		imagecopyresampled($dstImage, $srcImage, 0, 0, 0, 0, $cropWidth, $cropHeight, $srcWidth, $srcHeight);
-		return $dstImage;
-	}
-}

src/Services/ThumbnailGenerators/ImageImagickThumbnailGenerator.php

@@ -1,78 +0,0 @@
-<?php
-namespace Szurubooru\Services\ThumbnailGenerators;
-
-class ImageImagickThumbnailGenerator implements IThumbnailGenerator
-{
-	private $config;
-
-	public function __construct(\Szurubooru\Config $config)
-	{
-		$this->config = $config;
-	}
-
-	public function generate($srcPath, $dstPath, $width, $height)
-	{
-		if (!file_exists($srcPath))
-			throw new \InvalidArgumentException($srcPath . ' does not exist');
-
-		$image = new \Imagick($srcPath);
-		$image = $image->coalesceImages();
-
-		switch ($this->config->misc->thumbnailCropStyle)
-		{
-			case 'outside':
-				$this->cropOutside($image, $width, $height);
-				break;
-			case 'inside':
-				$this->cropInside($image, $width, $height);
-				break;
-			default:
-				throw new \Exception('Unknown thumbnail crop style');
-		}
-
-		$image->writeImage($dstPath);
-		$image->destroy();
-	}
-
-	private function cropOutside($srcImage, $dstWidth, $dstHeight)
-	{
-		$srcWidth = $srcImage->getImageWidth();
-		$srcHeight = $srcImage->getImageHeight();
-
-		if (($dstHeight / $dstWidth) > ($srcHeight / $srcWidth))
-		{
-			$cropHeight = $dstHeight;
-			$cropWidth = $dstHeight * $srcWidth / $srcHeight;
-		}
-		else
-		{
-			$cropWidth = $dstWidth;
-			$cropHeight = $dstWidth * $srcHeight / $srcWidth;
-		}
-		$cropX = ($cropWidth - $dstWidth) >> 1;
-		$cropY = ($cropHeight - $dstHeight) >> 1;
-
-		$srcImage->resizeImage($cropWidth, $cropHeight, \imagick::FILTER_LANCZOS, 0.9);
-		$srcImage->cropImage($dstWidth, $dstHeight, $cropX, $cropY);
-		$srcImage->setImagePage(0, 0, 0, 0);
-	}
-
-	private function cropInside($srcImage, $dstWidth, $dstHeight)
-	{
-		$srcWidth = $srcImage->getImageWidth();
-		$srcHeight = $srcImage->getImageHeight();
-
-		if (($dstHeight / $dstWidth) < ($srcHeight / $srcWidth))
-		{
-			$cropHeight = $dstHeight;
-			$cropWidth = $dstHeight * $srcWidth / $srcHeight;
-		}
-		else
-		{
-			$cropWidth = $dstWidth;
-			$cropHeight = $dstWidth * $srcHeight / $srcWidth;
-		}
-
-		$srcImage->resizeImage($cropWidth, $cropHeight, \imagick::FILTER_LANCZOS, 0.9);
-	}
-}

src/Services/ThumbnailGenerators/ImageThumbnailGenerator.php

@@ -3,26 +3,77 @@ namespace Szurubooru\Services\ThumbnailGenerators;
 
 class ImageThumbnailGenerator implements IThumbnailGenerator
 {
-	private $imageImagickThumbnailGenerator;
-	private $imageGdThumbnailGenerator;
+	private $imageManipulator;
 
-	public function __construct(
-		ImageImagickThumbnailGenerator $imageImagickThumbnailGenerator,
-		ImageGdThumbnailGenerator $imageGdThumbnailGenerator)
+	public function __construct(\Szurubooru\Services\ImageManipulation\ImageManipulator $imageManipulator)
 	{
-		$this->imageImagickThumbnailGenerator = $imageImagickThumbnailGenerator;
-		$this->imageGdThumbnailGenerator = $imageGdThumbnailGenerator;
+		$this->imageManipulator = $imageManipulator;
 	}
 
-	public function generate($srcPath, $dstPath, $width, $height)
+	public function generate($source, $width, $height, $cropStyle)
 	{
-		if (extension_loaded('imagick'))
-			$strategy = $this->imageImagickThumbnailGenerator;
-		elseif (extension_loaded('gd'))
-			$strategy = $this->imageGdThumbnailGenerator;
+		try
+		{
+			$image = $this->imageManipulator->loadFromBuffer($source);
+			$srcWidth = $this->imageManipulator->getImageWidth($image);
+			$srcHeight = $this->imageManipulator->getImageHeight($image);
+
+			switch ($cropStyle)
+			{
+				case IThumbnailGenerator::CROP_OUTSIDE:
+					$this->cropOutside($image, $srcWidth, $srcHeight, $width, $height);
+					break;
+
+				case IThumbnailGenerator::CROP_INSIDE:
+					$this->cropInside($image, $srcWidth, $srcHeight, $width, $height);
+					break;
+
+				default:
+					throw new \InvalidArgumentException('Unknown thumbnail crop style');
+			}
+
+			return $this->imageManipulator->saveToBuffer(
+				$image,
+				\Szurubooru\Services\ImageManipulation\IImageManipulator::FORMAT_JPEG);
+		}
+		catch (\Exception $e)
+		{
+			return null;
+		}
+	}
+
+	private function cropOutside($image, $srcWidth, $srcHeight, $dstWidth, $dstHeight)
+	{
+		if (($dstHeight / $dstWidth) > ($srcHeight / $srcWidth))
+		{
+			$cropHeight = $dstHeight;
+			$cropWidth = $dstHeight * $srcWidth / $srcHeight;
+		}
 		else
-			throw new \Exception('Both imagick and gd extensions are disabled');
+		{
+			$cropWidth = $dstWidth;
+			$cropHeight = $dstWidth * $srcHeight / $srcWidth;
+		}
+		$cropX = ($cropWidth - $dstWidth) >> 1;
+		$cropY = ($cropHeight - $dstHeight) >> 1;
 
-		return $strategy->generate($srcPath, $dstPath, $width, $height);
+		$this->imageManipulator->resizeImage($image, $cropWidth, $cropHeight);
+		$this->imageManipulator->cropImage($image, $dstWidth, $dstHeight, $cropX, $cropY);
+	}
+
+	private function cropInside($image, $srcWidth, $srcHeight, $dstWidth, $dstHeight)
+	{
+		if (($dstHeight / $dstWidth) < ($srcHeight / $srcWidth))
+		{
+			$cropHeight = $dstHeight;
+			$cropWidth = $dstHeight * $srcWidth / $srcHeight;
+		}
+		else
+		{
+			$cropWidth = $dstWidth;
+			$cropHeight = $dstWidth * $srcHeight / $srcWidth;
+		}
+
+		$this->imageManipulator->resizeImage($image, $cropWidth, $cropHeight);
 	}
 }

src/Services/ThumbnailGenerators/SmartThumbnailGenerator.php

@@ -17,22 +17,19 @@ class SmartThumbnailGenerator implements IThumbnailGenerator
 		$this->imageThumbnailGenerator = $imageThumbnailGenerator;
 	}
 
-	public function generate($srcPath, $dstPath, $width, $height)
+	public function generate($source, $width, $height, $cropStyle)
 	{
-		if (!file_exists($srcPath))
-			throw new \InvalidArgumentException($srcPath . ' does not exist');
-
-		$mime = \Szurubooru\Helpers\MimeHelper::getMimeTypeFromFile($srcPath);
+		$mime = \Szurubooru\Helpers\MimeHelper::getMimeTypeFromBuffer($source);
 
 		if (\Szurubooru\Helpers\MimeHelper::isFlash($mime))
-			return $this->flashThumbnailGenerator->generate($srcPath, $dstPath, $width, $height);
+			return $this->flashThumbnailGenerator->generate($source, $width, $height, $cropStyle);
 
 		if (\Szurubooru\Helpers\MimeHelper::isVideo($mime))
-			return $this->videoThumbnailGenerator->generate($srcPath, $dstPath, $width, $height);
+			return $this->videoThumbnailGenerator->generate($source, $width, $height, $cropStyle);
 
 		if (\Szurubooru\Helpers\MimeHelper::isImage($mime))
-			return $this->imageThumbnailGenerator->generate($srcPath, $dstPath, $width, $height);
+			return $this->imageThumbnailGenerator->generate($source, $width, $height, $cropStyle);
 
-		throw new \InvalidArgumentException('Invalid thumbnail file type: ' . $mime);
+		return null;
 	}
 }

src/Services/ThumbnailGenerators/VideoThumbnailGenerator.php

@@ -3,6 +3,9 @@ namespace Szurubooru\Services\ThumbnailGenerators;
 
 class VideoThumbnailGenerator implements IThumbnailGenerator
 {
+	const PROGRAM_NAME_FFMPEG = 'ffmpeg';
+	const PROGRAM_NAME_FFMPEGTHUMBNAILER = 'ffmpegthumbnailer';
+
 	private $imageThumbnailGenerator;
 
 	public function __construct(ImageThumbnailGenerator $imageThumbnailGenerator)
@@ -10,39 +13,43 @@ class VideoThumbnailGenerator implements IThumbnailGenerator
 		$this->imageThumbnailGenerator = $imageThumbnailGenerator;
 	}
 
-	public function generate($srcPath, $dstPath, $width, $height)
+	public function generate($source, $width, $height, $cropStyle)
 	{
-		if (!file_exists($srcPath))
-			throw new \InvalidArgumentException($srcPath . ' does not exist');
+		$tmpSourcePath = tempnam(sys_get_temp_dir(), 'thumb') . '.dat';
+		$tmpTargetPath = tempnam(sys_get_temp_dir(), 'thumb') . '.png';
+		file_put_contents($tmpSourcePath, $source);
 
-		$tmpPath = tempnam(sys_get_temp_dir(), 'thumb') . '.jpg';
-
-		$cmd = sprintf(
-			'ffmpegthumbnailer -i"%s" -o"%s" -s0 -t"12%%"',
-			$srcPath,
-			$tmpPath);
-		exec($cmd);
-
-		if (file_exists($tmpPath))
+		if (\Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(self::PROGRAM_NAME_FFMPEGTHUMBNAILER))
 		{
-			$this->imageThumbnailGenerator->generate($tmpPath, $dstPath, $width, $height);
-			unlink($tmpPath);
-			return;
+			\Szurubooru\Helpers\ProgramExecutor::run(
+				self::PROGRAM_NAME_FFMPEGTHUMBNAILER,
+				[
+					'-i' . $tmpSourcePath,
+					'-o' . $tmpTargetPath,
+					'-s0',
+					'-t12%%'
+				]);
 		}
 
-		$cmd = sprintf(
-			'ffmpeg -i "%s" -vframes 1 "%s"',
-			$srcPath,
-			$tmpPath);
-		exec($cmd);
-
-		if (file_exists($tmpPath))
+		if (!file_exists($tmpTargetPath) and \Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(self::PROGRAM_NAME_FFMPEG))
 		{
-			$this->imageThumbnailGenerator->generate($tmpPath, $dstPath, $width, $height);
-			unlink($tmpPath);
-			return;
+			\Szurubooru\Helpers\ProgramExecutor::run(self::PROGRAM_NAME_FFMEPG,
+				[
+					'-i', $tmpSourcePath,
+					'-vframes', '1',
+					$tmpTargetPath
+				]);
 		}
 
-		throw new \RuntimeException('Failed to generate thumbnail');
+		if (!file_exists($tmpTargetPath))
+		{
+			unlink($tmpSourcePath);
+			return null;
+		}
+
+		$ret = $this->imageThumbnailGenerator->generate(file_get_contents($tmpTargetPath), $width, $height, $cropStyle);
+		unlink($tmpSourcePath);
+		unlink($tmpTargetPath);
+		return $ret;
 	}
 }

src/Services/ThumbnailService.php

@@ -3,48 +3,69 @@ namespace Szurubooru\Services;
 
 class ThumbnailService
 {
+	private $config;
 	private $fileService;
 	private $thumbnailGenerator;
 
 	public function __construct(
-		FileService $fileService,
-		ThumbnailGenerators\SmartThumbnailGenerator $thumbnailGenerator)
+		\Szurubooru\Config $config,
+		\Szurubooru\Services\FileService $fileService,
+		\Szurubooru\Services\ThumbnailGenerators\SmartThumbnailGenerator $thumbnailGenerator)
 	{
+		$this->config = $config;
 		$this->fileService = $fileService;
 		$this->thumbnailGenerator = $thumbnailGenerator;
 	}
 
-	public function getOrGenerate($source, $width, $height)
-	{
-		$target = $this->getPath($source, $width, $height);
-
-		if (!$this->fileService->exists($target))
-			$this->generate($source, $width, $height);
-
-		return $target;
-	}
-
-	public function deleteUsedThumbnails($source)
+	public function deleteUsedThumbnails($sourceName)
 	{
 		foreach ($this->getUsedThumbnailSizes() as $size)
 		{
 			list ($width, $height) = $size;
-			$target = $this->getPath($source, $width, $height);
-			if ($this->fileService->exists($target))
+			$target = $this->getThumbnailName($sourceName, $width, $height);
 			$this->fileService->delete($target);
 		}
 	}
 
-	public function generate($source, $width, $height)
+	public function generateIfNeeded($sourceName, $width, $height)
 	{
-		$target = $this->getPath($source, $width, $height);
+		$thumbnailName = $this->getThumbnailName($sourceName, $width, $height);
 
-		$fullSource = $this->fileService->getFullPath($source);
-		$fullTarget = $this->fileService->getFullPath($target);
-		$this->fileService->createFolders($target);
-		$this->thumbnailGenerator->generate($fullSource, $fullTarget, $width, $height);
+		if (!$this->fileService->exists($thumbnailName))
+			$this->generate($sourceName, $width, $height);
+	}
 
-		return $target;
+	public function generate($sourceName, $width, $height)
+	{
+		switch ($this->config->misc->thumbnailCropStyle)
+		{
+			case 'outside':
+				$cropStyle = \Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_OUTSIDE;
+				break;
+
+			case 'inside':
+				$cropStyle = \Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_INSIDE;
+				break;
+
+			default:
+				throw new \InvalidArgumentException('Invalid thumbnail crop style');
+		}
+
+		$thumbnailName = $this->getThumbnailName($sourceName, $width, $height);
+
+		$source = $this->fileService->load($sourceName);
+		$result = null;
+
+		if (!$source)
+			$source = $this->fileService->load($this->getBlankThumbnailName());
+
+		if ($source)
+			$result = $this->thumbnailGenerator->generate($source, $width, $height, $cropStyle);
+
+		if (!$result)
+			$result = $this->fileService->load($this->getBlankThumbnailName());
+
+		$this->fileService->save($thumbnailName, $result);
 	}
 
 	public function getUsedThumbnailSizes()
@@ -64,8 +85,13 @@ class ThumbnailService
 		}
 	}
 
-	private function getPath($source, $width, $height)
+	public function getThumbnailName($source, $width, $height)
 	{
 		return 'thumbnails' . DIRECTORY_SEPARATOR . $width . 'x' . $height . DIRECTORY_SEPARATOR . $source;
 	}
+
+	public function getBlankThumbnailName()
+	{
+		return 'thumbnails' . DIRECTORY_SEPARATOR . 'blank.png';
+	}
 }

tests/Helpers/ProgramExecutorTest.php

@@ -0,0 +1,10 @@
+<?php
+namespace Szurubooru\Tests;
+
+class ProgramExecutorTest extends \Szurubooru\Tests\AbstractTestCase
+{
+	public function testIsProgramAvailable()
+	{
+		$this->assertFalse(\Szurubooru\Helpers\ProgramExecutor::isProgramAvailable('there_is_no_way_my_os_can_have_this_program'));
+	}
+}

tests/Services/ImageManipulatorTest.php

@@ -0,0 +1,114 @@
+<?php
+namespace Szurubooru\Tests\Services;
+
+class ImageManipulatorTest extends \Szurubooru\Tests\AbstractTestCase
+{
+	private $imageManipulators;
+
+	public function setUp()
+	{
+		parent::setUp();
+
+		$imagickImageManipulator = new \Szurubooru\Services\ImageManipulation\ImagickImageManipulator();
+		$gdImageManipulator = new \Szurubooru\Services\ImageManipulation\GdImageManipulator();
+		$autoImageManipulator = new \Szurubooru\Services\ImageManipulation\ImageManipulator(
+			$imagickImageManipulator,
+			$gdImageManipulator);
+
+		$this->imageManipulators = [
+			$imagickImageManipulator,
+			$gdImageManipulator,
+			$autoImageManipulator,
+		];
+	}
+
+	public function testImageSize()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$image = $imageManipulator->loadFromBuffer($this->getTestFile('image.jpg'));
+			$this->assertEquals(640, $imageManipulator->getImageWidth($image));
+			$this->assertEquals(480, $imageManipulator->getImageHeight($image));
+		}
+	}
+
+	public function testNonImage()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$this->assertNull($imageManipulator->loadFromBuffer($this->getTestFile('flash.swf')));
+		}
+	}
+
+	public function testImageResizing()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$image = $imageManipulator->loadFromBuffer($this->getTestFile('image.jpg'));
+			$imageManipulator->resizeImage($image, 400, 500);
+			$this->assertEquals(400, $imageManipulator->getImageWidth($image));
+			$this->assertEquals(500, $imageManipulator->getImageHeight($image));
+		}
+	}
+
+	public function testImageCroppingBleedWidth()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$image = $imageManipulator->loadFromBuffer($this->getTestFile('image.jpg'));
+			$imageManipulator->cropImage($image, 640, 480, 200, 200);
+			$this->assertEquals(440, $imageManipulator->getImageWidth($image));
+			$this->assertEquals(280, $imageManipulator->getImageHeight($image));
+		}
+	}
+
+	public function testImageCroppingBleedPosition()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$image = $imageManipulator->loadFromBuffer($this->getTestFile('image.jpg'));
+			$imageManipulator->cropImage($image, 640, 480, -200, -200);
+			$this->assertEquals(440, $imageManipulator->getImageWidth($image));
+			$this->assertEquals(280, $imageManipulator->getImageHeight($image));
+		}
+	}
+
+	public function testImageCroppingBleedBoth()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$image = $imageManipulator->loadFromBuffer($this->getTestFile('image.jpg'));
+			$imageManipulator->cropImage($image, 642, 481, -1, -1);
+			$this->assertEquals(640, $imageManipulator->getImageWidth($image));
+			$this->assertEquals(480, $imageManipulator->getImageHeight($image));
+		}
+	}
+
+	public function testImageCroppingMaxBleeding()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$image = $imageManipulator->loadFromBuffer($this->getTestFile('image.jpg'));
+			$imageManipulator->cropImage($image, 100, 100, 1000, 1000);
+			$this->assertEquals(1, $imageManipulator->getImageWidth($image));
+			$this->assertEquals(1, $imageManipulator->getImageHeight($image));
+		}
+	}
+
+	public function testSaving()
+	{
+		foreach ($this->getImageManipulators() as $imageManipulator)
+		{
+			$image = $imageManipulator->loadFromBuffer($this->getTestFile('image.jpg'));
+			$jpegBuffer = $imageManipulator->saveToBuffer($image, \Szurubooru\Services\ImageManipulation\IImageManipulator::FORMAT_JPEG);
+			$pngBuffer = $imageManipulator->saveToBuffer($image, \Szurubooru\Services\ImageManipulation\IImageManipulator::FORMAT_PNG);
+			$this->assertEquals('image/jpeg', \Szurubooru\Helpers\MimeHelper::getMimeTypeFromBuffer($jpegBuffer));
+			$this->assertEquals('image/png', \Szurubooru\Helpers\MimeHelper::getMimeTypeFromBuffer($pngBuffer));
+		}
+	}
+
+	private function getImageManipulators()
+	{
+		return $this->imageManipulators;
+	}
+}

tests/Services/PostServiceTest.php

@@ -11,6 +11,7 @@ class PostServiceTest extends \Szurubooru\Tests\AbstractTestCase
 	private $authServiceMock;
 	private $timeServiceMock;
 	private $fileServiceMock;
+	private $imageManipulatorMock;
 
 	public function setUp()
 	{
@@ -23,9 +24,9 @@ class PostServiceTest extends \Szurubooru\Tests\AbstractTestCase
 		$this->timeServiceMock = $this->mock(\Szurubooru\Services\TimeService::class);
 		$this->fileServiceMock = $this->mock(\Szurubooru\Services\FileService::class);
 		$this->configMock->set('database/maxPostSize', 1000000);
+		$this->imageManipulatorMock = $this->mock(\Szurubooru\Services\ImageManipulation\ImageManipulator::class);
 	}
 
-
 	public function testCreatingYoutubePost()
 	{
 		$formData = new \Szurubooru\FormData\UploadFormData;
@@ -60,15 +61,17 @@ class PostServiceTest extends \Szurubooru\Tests\AbstractTestCase
 		$formData->contentFileName = 'blah';
 
 		$this->postDaoMock->expects($this->once())->method('save')->will($this->returnArgument(0));
+		$this->imageManipulatorMock->expects($this->once())->method('getImageWidth')->willReturn(640);
+		$this->imageManipulatorMock->expects($this->once())->method('getImageHeight')->willReturn(480);
 
 		$this->postService = $this->getPostService();
 		$savedPost = $this->postService->createPost($formData);
 		$this->assertEquals(\Szurubooru\Entities\Post::POST_TYPE_IMAGE, $savedPost->getContentType());
 		$this->assertEquals('24216edd12328de3a3c55e2f98220ee7613e3be1', $savedPost->getContentChecksum());
-		$this->assertEquals(640, $savedPost->getImageWidth());
-		$this->assertEquals(480, $savedPost->getImageHeight());
 		$this->assertEquals($formData->contentFileName, $savedPost->getOriginalFileName());
 		$this->assertEquals(687645, $savedPost->getOriginalFileSize());
+		$this->assertEquals(640, $savedPost->getImageWidth());
+		$this->assertEquals(480, $savedPost->getImageHeight());
 	}
 
 	public function testCreatingVideos()
@@ -85,8 +88,6 @@ class PostServiceTest extends \Szurubooru\Tests\AbstractTestCase
 		$savedPost = $this->postService->createPost($formData);
 		$this->assertEquals(\Szurubooru\Entities\Post::POST_TYPE_VIDEO, $savedPost->getContentType());
 		$this->assertEquals('16dafaa07cda194d03d590529c06c6ec1a5b80b0', $savedPost->getContentChecksum());
-		$this->assertNull($savedPost->getImageWidth());
-		$this->assertNull($savedPost->getImageHeight());
 		$this->assertEquals($formData->contentFileName, $savedPost->getOriginalFileName());
 		$this->assertEquals(14667, $savedPost->getOriginalFileSize());
 	}
@@ -105,8 +106,6 @@ class PostServiceTest extends \Szurubooru\Tests\AbstractTestCase
 		$savedPost = $this->postService->createPost($formData);
 		$this->assertEquals(\Szurubooru\Entities\Post::POST_TYPE_FLASH, $savedPost->getContentType());
 		$this->assertEquals('d897e044b801d892291b440534c3be3739034f68', $savedPost->getContentChecksum());
-		$this->assertEquals(320, $savedPost->getImageWidth());
-		$this->assertEquals(240, $savedPost->getImageHeight());
 		$this->assertEquals($formData->contentFileName, $savedPost->getOriginalFileName());
 		$this->assertEquals(226172, $savedPost->getOriginalFileSize());
 	}
@@ -180,6 +179,7 @@ class PostServiceTest extends \Szurubooru\Tests\AbstractTestCase
 			$this->postSearchServiceMock,
 			$this->authServiceMock,
 			$this->timeServiceMock,
-			$this->fileServiceMock);
+			$this->fileServiceMock,
+			$this->imageManipulatorMock);
 	}
 }

tests/Services/ThumbnailGeneratorTest.php

@@ -0,0 +1,99 @@
+<?php
+namespace Szurubooru\Tests\Services;
+
+class ThumbnailGeneratorTest extends \Szurubooru\Tests\AbstractTestCase
+{
+	public function testFlashThumbnails()
+	{
+		if (!\Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(\Szurubooru\Services\ThumbnailGenerators\FlashThumbnailGenerator::PROGRAM_NAME_DUMP_GNASH)
+			and !\Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(\Szurubooru\Services\ThumbnailGenerators\FlashThumbnailGenerator::PROGRAM_NAME_SWFRENDER))
+		{
+			$this->markTestSkipped('External software necessary to run this test is missing.');
+		}
+
+		$thumbnailGenerator = $this->getThumbnailGenerator();
+		$imageManipulator = $this->getImageManipulator();
+
+		$result = $thumbnailGenerator->generate(
+			$this->getTestFile('flash.swf'),
+			150,
+			150,
+			\Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_OUTSIDE);
+
+		$image = $imageManipulator->loadFromBuffer($result);
+		$this->assertEquals(150, $imageManipulator->getImageWidth($image));
+		$this->assertEquals(150, $imageManipulator->getImageHeight($image));
+	}
+
+	public function testVideoThumbnails()
+	{
+		if (!\Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(\Szurubooru\Services\ThumbnailGenerators\VideoThumbnailGenerator::PROGRAM_NAME_FFMPEG)
+			and !\Szurubooru\Helpers\ProgramExecutor::isProgramAvailable(\Szurubooru\Services\ThumbnailGenerators\VideoThumbnailGenerator::PROGRAM_NAME_FFMPEGTHUMBNAILER))
+		{
+			$this->markTestSkipped('External software necessary to run this test is missing.');
+		}
+
+		$thumbnailGenerator = $this->getThumbnailGenerator();
+		$imageManipulator = $this->getImageManipulator();
+
+		$result = $thumbnailGenerator->generate(
+			$this->getTestFile('video.mp4'),
+			150,
+			150,
+			\Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_OUTSIDE);
+
+		$image = $imageManipulator->loadFromBuffer($result);
+		$this->assertEquals(150, $imageManipulator->getImageWidth($image));
+		$this->assertEquals(150, $imageManipulator->getImageHeight($image));
+	}
+
+	public function testImageThumbnails()
+	{
+		$thumbnailGenerator = $this->getThumbnailGenerator();
+		$imageManipulator = $this->getImageManipulator();
+
+		$result = $thumbnailGenerator->generate(
+			$this->getTestFile('image.jpg'),
+			150,
+			150,
+			\Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_OUTSIDE);
+
+		$image = $imageManipulator->loadFromBuffer($result);
+		$this->assertEquals(150, $imageManipulator->getImageWidth($image));
+		$this->assertEquals(150, $imageManipulator->getImageHeight($image));
+
+		$result = $thumbnailGenerator->generate(
+			$this->getTestFile('image.jpg'),
+			150,
+			150,
+			\Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_INSIDE);
+
+		$image = $imageManipulator->loadFromBuffer($result);
+		$this->assertEquals(150, $imageManipulator->getImageWidth($image));
+		$this->assertEquals(112, $imageManipulator->getImageHeight($image));
+	}
+
+	public function testBadThumbnails()
+	{
+		$thumbnailGenerator = $this->getThumbnailGenerator();
+		$imageManipulator = $this->getImageManipulator();
+
+		$result = $thumbnailGenerator->generate(
+			$this->getTestFile('text.txt'),
+			150,
+			150,
+			\Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_OUTSIDE);
+
+		$this->assertNull($result);
+	}
+
+	public function getImageManipulator()
+	{
+		return \Szurubooru\Injector::get(\Szurubooru\Services\ImageManipulation\ImageManipulator::class);
+	}
+
+	public function getThumbnailGenerator()
+	{
+		return \Szurubooru\Injector::get(\Szurubooru\Services\ThumbnailGenerators\SmartThumbnailGenerator::class);
+	}
+}

tests/Services/ThumbnailServiceTest.php

@@ -3,29 +3,18 @@ namespace Szurubooru\Tests\Services;
 
 class ThumbnailServiceTest extends \Szurubooru\Tests\AbstractTestCase
 {
-	public function testDeleteUsedThumbnails()
+	private $configMock;
+	private $fileServiceMock;
+	private $thumbnailGeneratorMock;
+
+	public function setUp()
 	{
-		define('DS', DIRECTORY_SEPARATOR);
+		parent::setUp();
 
-		$tempDirectory = $this->createTestDirectory();
-		mkdir($tempDirectory . DS . 'thumbnails');
-		mkdir($tempDirectory . DS . 'thumbnails' . DS . '5x5');
-		mkdir($tempDirectory . DS . 'thumbnails' . DS . '10x10');
-		touch($tempDirectory . DS . 'thumbnails' . DS . '5x5' . DS . 'remove');
-		touch($tempDirectory . DS . 'thumbnails' . DS . '5x5' . DS . 'keep');
-		touch($tempDirectory . DS . 'thumbnails' . DS . '10x10' . DS . 'remove');
-
-		$configMock = $this->mockConfig(null, $tempDirectory);
-		$httpHelperMock = $this->mock(\Szurubooru\Helpers\HttpHelper::class);
-		$fileService = new \Szurubooru\Services\FileService($configMock, $httpHelperMock);
-		$thumbnailGeneratorMock = $this->mock(\Szurubooru\Services\ThumbnailGenerators\SmartThumbnailGenerator::class);
-
-		$thumbnailService = new \Szurubooru\Services\ThumbnailService($fileService, $thumbnailGeneratorMock);
-		$thumbnailService->deleteUsedThumbnails('remove');
-
-		$this->assertFalse(file_exists($tempDirectory . DS . 'thumbnails' . DS . '5x5' . DS . 'remove'));
-		$this->assertTrue(file_exists($tempDirectory . DS . 'thumbnails' . DS . '5x5' . DS . 'keep'));
-		$this->assertFalse(file_exists($tempDirectory . DS . 'thumbnails' . DS . '10x10' . DS . 'remove'));
+		$this->configMock = $this->mockConfig();
+		$this->fileServiceMock = $this->mock(\Szurubooru\Services\FileService::class);
+		$this->thumbnailServiceMock = $this->mock(\Szurubooru\Services\ThumbnailService::class);
+		$this->thumbnailGeneratorMock = $this->mock(\Szurubooru\Services\ThumbnailGenerators\SmartThumbnailGenerator::class);
 	}
 
 	public function testGetUsedThumbnailSizes()
@@ -36,11 +25,8 @@ class ThumbnailServiceTest extends \Szurubooru\Tests\AbstractTestCase
 		mkdir($tempDirectory . DIRECTORY_SEPARATOR . 'something unexpected');
 		touch($tempDirectory . DIRECTORY_SEPARATOR . '15x15');
 
-		$fileServiceMock = $this->mock(\Szurubooru\Services\FileService::class);
-		$fileServiceMock->expects($this->once())->method('getFullPath')->willReturn($tempDirectory);
-		$thumbnailGeneratorMock = $this->mock(\Szurubooru\Services\ThumbnailGenerators\SmartThumbnailGenerator::class);
-
-		$thumbnailService = new \Szurubooru\Services\ThumbnailService($fileServiceMock, $thumbnailGeneratorMock);
+		$this->fileServiceMock->expects($this->once())->method('getFullPath')->with('thumbnails')->willReturn($tempDirectory);
+		$thumbnailService = $this->getThumbnailService();
 
 		$expected = [[5, 5], [10, 10]];
 		$actual = iterator_to_array($thumbnailService->getUsedThumbnailSizes());
@@ -49,4 +35,101 @@ class ThumbnailServiceTest extends \Szurubooru\Tests\AbstractTestCase
 		foreach ($expected as $v)
 			$this->assertContains($v, $actual);
 	}
+
+	public function testDeleteUsedThumbnails()
+	{
+		$tempDirectory = $this->createTestDirectory();
+		mkdir($tempDirectory . DIRECTORY_SEPARATOR . '5x5');
+		mkdir($tempDirectory . DIRECTORY_SEPARATOR . '10x10');
+		touch($tempDirectory . DIRECTORY_SEPARATOR . '5x5' . DIRECTORY_SEPARATOR . 'remove');
+		touch($tempDirectory . DIRECTORY_SEPARATOR . '5x5' . DIRECTORY_SEPARATOR . 'keep');
+		touch($tempDirectory . DIRECTORY_SEPARATOR . '10x10' . DIRECTORY_SEPARATOR . 'remove');
+
+		$this->fileServiceMock->expects($this->once())->method('getFullPath')->with('thumbnails')->willReturn($tempDirectory);
+		$this->fileServiceMock->expects($this->exactly(2))->method('delete')->withConsecutive(
+			['thumbnails' . DIRECTORY_SEPARATOR . '10x10' . DIRECTORY_SEPARATOR . 'remove'],
+			['thumbnails' . DIRECTORY_SEPARATOR . '5x5' . DIRECTORY_SEPARATOR . 'remove']);
+		$thumbnailService = $this->getThumbnailService();
+
+		$thumbnailService->deleteUsedThumbnails('remove');
+	}
+
+	public function testGeneratingFromNonExistingSource()
+	{
+		$this->configMock->set('misc/thumbnailCropStyle', 'outside');
+
+		$this->fileServiceMock
+			->expects($this->exactly(2))
+			->method('load')
+			->withConsecutive(
+				['nope'],
+				['thumbnails/blank.png'])
+			->will(
+				$this->onConsecutiveCalls(
+					null,
+					'content of blank thumbnail'));
+
+		$this->thumbnailGeneratorMock
+			->expects($this->once())
+			->method('generate')
+			->with(
+				'content of blank thumbnail',
+				100,
+				100,
+				\Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_OUTSIDE)
+			->willReturn('generated thumbnail');
+
+		$this->fileServiceMock
+			->expects($this->once())
+			->method('save')
+			->with('thumbnails/100x100/nope', 'generated thumbnail');
+
+		$thumbnailService = $this->getThumbnailService();
+		$thumbnailService->generate('nope', 100, 100);
+	}
+
+	public function testThumbnailGeneratingFail()
+	{
+		$this->configMock->set('misc/thumbnailCropStyle', 'outside');
+
+		$this->fileServiceMock
+			->expects($this->exactly(3))
+			->method('load')
+			->withConsecutive(
+				['nope'],
+				['thumbnails/blank.png'],
+				['thumbnails/blank.png'])
+			->will(
+				$this->onConsecutiveCalls(
+					null,
+					'content of blank thumbnail',
+					'content of blank thumbnail (2)'));
+
+		$this->thumbnailGeneratorMock
+			->expects($this->once())
+			->method('generate')
+			->with(
+				'content of blank thumbnail',
+				100,
+				100,
+				\Szurubooru\Services\ThumbnailGenerators\IThumbnailGenerator::CROP_OUTSIDE)
+			->willReturn(null);
+
+		$this->fileServiceMock
+			->expects($this->once())
+			->method('save')
+			->with('thumbnails/100x100/nope', 'content of blank thumbnail (2)');
+
+		$thumbnailService = $this->getThumbnailService();
+		$thumbnailService->generate('nope', 100, 100);
+	}
+
+
+	private function getThumbnailService()
+	{
+		return new \Szurubooru\Services\ThumbnailService(
+			$this->configMock,
+			$this->fileServiceMock,
+			$this->thumbnailGeneratorMock);
+	}
 }

tests/test_files/text.txt

@@ -0,0 +1 @@
+lorem ipsum