From 0d1a4ec7ea32842ce406adcf04c6ffd59dd3377f Mon Sep 17 00:00:00 2001
From: jendib <benjamin.gam@gmail.com>
Date: Sun, 13 Dec 2015 22:29:23 +0100
Subject: [PATCH] #55: Export document in PDF (utilities)

---
 .../com/sismics/docs/core/model/jpa/File.java |  94 +++----------
 .../com/sismics/docs/core/util/FileUtil.java  | 123 ++++++++++++++++--
 .../docs/core/util/TemporaryFileStream.java   |  55 ++++++++
 .../java/com/sismics/util/mime/MimeType.java  |   3 -
 .../com/sismics/util/mime/MimeTypeUtil.java   |   4 -
 .../docs/core/util/TestEncryptUtil.java       |  10 +-
 .../sismics/docs/core/util/TestFileUtil.java  |  57 ++++++--
 .../test/resources/file/apollo_landscape.jpg  | Bin 0 -> 23134 bytes
 .../test/resources/file/apollo_portrait.jpg   | Bin 0 -> 7907 bytes
 docs-parent/pom.xml                           |   2 +-
 .../docs/rest/resource/FileResource.java      |   2 +-
 11 files changed, 239 insertions(+), 111 deletions(-)
 create mode 100644 docs-core/src/main/java/com/sismics/docs/core/util/TemporaryFileStream.java
 create mode 100644 docs-core/src/test/resources/file/apollo_landscape.jpg
 create mode 100644 docs-core/src/test/resources/file/apollo_portrait.jpg

diff --git a/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java b/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java
index 401e1f7e..64682bc6 100644
--- a/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java
+++ b/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java
@@ -7,6 +7,7 @@ import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.Lob;
 import javax.persistence.Table;
+import javax.persistence.Transient;
 
 import com.google.common.base.MoreObjects;
 
@@ -69,150 +70,85 @@ public class File implements Loggable {
     private Integer order;
     
     /**
-     * Getter of id.
-     *
-     * @return the id
+     * Private key to decrypt the file.
+     * Not saved to database, of course.
      */
+    @Transient
+    private String privateKey;
+    
     public String getId() {
         return id;
     }
 
-    /**
-     * Setter of id.
-     *
-     * @param id id
-     */
     public void setId(String id) {
         this.id = id;
     }
     
-    /**
-     * Getter of documentId.
-     *
-     * @return the documentId
-     */
     public String getDocumentId() {
         return documentId;
     }
 
-    /**
-     * Setter of documentId.
-     *
-     * @param documentId documentId
-     */
     public void setDocumentId(String documentId) {
         this.documentId = documentId;
     }
-    
-    /**
-     * Getter of mimeType.
-     *
-     * @return the mimeType
-     */
+
     public String getMimeType() {
         return mimeType;
     }
 
-    /**
-     * Setter of mimeType.
-     *
-     * @param mimeType mimeType
-     */
     public void setMimeType(String mimeType) {
         this.mimeType = mimeType;
     }
 
-    /**
-     * Getter of createDate.
-     *
-     * @return the createDate
-     */
     public Date getCreateDate() {
         return createDate;
     }
 
-    /**
-     * Setter of createDate.
-     *
-     * @param createDate createDate
-     */
     public void setCreateDate(Date createDate) {
         this.createDate = createDate;
     }
 
-    /**
-     * Getter of deleteDate.
-     *
-     * @return the deleteDate
-     */
     @Override
     public Date getDeleteDate() {
         return deleteDate;
     }
 
-    /**
-     * Setter of deleteDate.
-     *
-     * @param deleteDate deleteDate
-     */
     public void setDeleteDate(Date deleteDate) {
         this.deleteDate = deleteDate;
     }
     
-    /**
-     * Getter of content.
-     *
-     * @return the content
-     */
     public String getContent() {
         return content;
     }
 
-    /**
-     * Setter of content.
-     *
-     * @param content content
-     */
     public void setContent(String content) {
         this.content = content;
     }
 
-    /**
-     * Getter of order.
-     *
-     * @return the order
-     */
     public Integer getOrder() {
         return order;
     }
 
-    /**
-     * Setter of order.
-     *
-     * @param order order
-     */
     public void setOrder(Integer order) {
         this.order = order;
     }
     
-    /**
-     * Getter of userId.
-     * 
-     * @return the userId
-     */
     public String getUserId() {
         return userId;
     }
 
-    /**
-     * Setter of userId.
-     * 
-     * @param userId userId
-     */
     public void setUserId(String userId) {
         this.userId = userId;
     }
 
+    public String getPrivateKey() {
+        return privateKey;
+    }
+
+    public void setPrivateKey(String privateKey) {
+        this.privateKey = privateKey;
+    }
+
     @Override
     public String toString() {
         return MoreObjects.toStringHelper(this)
diff --git a/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java b/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java
index 59b30bec..82f9de31 100644
--- a/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java
+++ b/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java
@@ -8,13 +8,22 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.List;
 
 import javax.crypto.Cipher;
 import javax.crypto.CipherInputStream;
 import javax.crypto.CipherOutputStream;
 import javax.imageio.ImageIO;
 
+import org.apache.pdfbox.io.MemoryUsageSetting;
+import org.apache.pdfbox.multipdf.PDFMergerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.apache.pdfbox.pdmodel.graphics.image.JPEGFactory;
+import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
+import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
 import org.apache.pdfbox.rendering.PDFRenderer;
 import org.apache.pdfbox.text.PDFTextStripper;
 import org.apache.poi.xwpf.usermodel.XWPFDocument;
@@ -27,6 +36,7 @@ import org.odftoolkit.odfdom.doc.OdfTextDocument;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.google.common.io.Closer;
 import com.sismics.docs.core.model.jpa.Document;
 import com.sismics.docs.core.model.jpa.File;
 import com.sismics.tess4j.Tesseract;
@@ -130,23 +140,24 @@ public class FileUtil {
     /**
      * Convert a file to PDF if necessary.
      * 
-     * @param inputStream InputStream
      * @param file File
+     * @param inputStream InputStream
+     * @param reset Reset the stream after usage
      * @return PDF input stream
      * @throws Exception 
      */
-    public static InputStream convertToPdf(InputStream inputStream, File file) throws Exception {
+    public static InputStream convertToPdf(File file, InputStream inputStream, boolean reset) throws Exception {
         if (file.getMimeType().equals(MimeType.APPLICATION_PDF)) {
             // It's already PDF, just return the input
             return inputStream;
         }
         
         if (file.getMimeType().equals(MimeType.OFFICE_DOCUMENT)) {
-            return convertOfficeDocument(inputStream);
+            return convertOfficeDocument(inputStream, reset);
         }
         
         if (file.getMimeType().equals(MimeType.OPEN_DOCUMENT_TEXT)) {
-            return convertOpenDocumentText(inputStream);
+            return convertOpenDocumentText(inputStream, reset);
         }
         
         // PDF conversion not necessary/possible
@@ -157,15 +168,18 @@ public class FileUtil {
      * Convert an open document text file to PDF.
      * 
      * @param inputStream Unencrypted input stream
+     * @param reset Reset the stream after usage
      * @return PDF input stream
      * @throws Exception 
      */
-    private static InputStream convertOpenDocumentText(InputStream inputStream) throws Exception {
+    private static InputStream convertOpenDocumentText(InputStream inputStream, boolean reset) throws Exception {
         ByteArrayOutputStream pdfOutputStream = new ByteArrayOutputStream();
         OdfTextDocument document = OdfTextDocument.loadDocument(inputStream);
         PdfOptions options = PdfOptions.create();
         PdfConverter.getInstance().convert(document, pdfOutputStream, options);
-        inputStream.reset();
+        if (reset) {
+            inputStream.reset();
+        }
         return new ByteArrayInputStream(pdfOutputStream.toByteArray());
     }
     
@@ -173,15 +187,18 @@ public class FileUtil {
      * Convert an Office document to PDF.
      * 
      * @param inputStream Unencrypted input stream
+     * @param reset Reset the stream after usage
      * @return PDF input stream
      * @throws Exception 
      */
-    private static InputStream convertOfficeDocument(InputStream inputStream) throws Exception {
+    private static InputStream convertOfficeDocument(InputStream inputStream, boolean reset) throws Exception {
         ByteArrayOutputStream pdfOutputStream = new ByteArrayOutputStream();
         XWPFDocument document = new XWPFDocument(inputStream);
         org.apache.poi.xwpf.converter.pdf.PdfOptions options = org.apache.poi.xwpf.converter.pdf.PdfOptions.create();
         org.apache.poi.xwpf.converter.pdf.PdfConverter.getInstance().convert(document, pdfOutputStream, options);
-        inputStream.reset();
+        if (reset) {
+            inputStream.reset();
+        }
         return new ByteArrayInputStream(pdfOutputStream.toByteArray());
     }
     
@@ -272,4 +289,94 @@ public class FileUtil {
             Files.delete(thumbnailFile);
         }
     }
+    
+    /**
+     * Convert a document and its files to a merged PDF file.
+     * 
+     * @param fileList List of files
+     * @param fitImageToPage Fill images to the page
+     * @param margin Margins in millimeters
+     * @return PDF input stream
+     * @throws IOException 
+     */
+    public static InputStream convertToPdf(List<File> fileList, boolean fitImageToPage, int margin) throws Exception {
+        // TODO PDF Export: Option to add a front page with:
+        // document title, document description, creator, date created, language,
+        // list of all files (and information if it is in this document or not)
+        // TODO PDF Export: Option to add the comments
+        
+        // Create a blank PDF
+        Closer closer = Closer.create();
+        MemoryUsageSetting memUsageSettings = MemoryUsageSetting.setupMixed(1000000); // 1MB max memory usage
+        memUsageSettings.setTempDir(new java.io.File(System.getProperty("java.io.tmpdir"))); // To OS temp
+        float mmPerInch = 1 / (10 * 2.54f) * 72f;
+        
+        try (PDDocument doc = new PDDocument(memUsageSettings)) {
+            // Add files
+            for (File file : fileList) {
+                Path storedFile = DirectoryUtil.getStorageDirectory().resolve(file.getId());
+                try (InputStream storedFileInputStream = file.getPrivateKey() == null ? // Try to decrypt the file if we have a private key available
+                        Files.newInputStream(storedFile) : EncryptionUtil.decryptInputStream(Files.newInputStream(storedFile), file.getPrivateKey())) {
+                    if (ImageUtil.isImage(file.getMimeType())) {
+                        PDPage page = new PDPage(PDRectangle.A4); // Images into A4 pages
+                        try (PDPageContentStream contentStream = new PDPageContentStream(doc, page)) {
+                            // Read the image using the correct handler. PDFBox can't do it because it relies wrongly on file extension
+                            PDImageXObject pdImage = null;
+                            if (file.getMimeType().equals(MimeType.IMAGE_JPEG)) {
+                                pdImage = JPEGFactory.createFromStream(doc, storedFileInputStream);
+                            } else if (file.getMimeType().equals(MimeType.IMAGE_GIF) || file.getMimeType().equals(MimeType.IMAGE_PNG)) {
+                                BufferedImage bim = ImageIO.read(storedFileInputStream);
+                                pdImage = LosslessFactory.createFromImage(doc, bim);
+                            }
+                            
+                            if (fitImageToPage) {
+                                // Fill the page with the image
+                                float widthAvailable = page.getMediaBox().getWidth() - 2 * margin * mmPerInch;
+                                float heightAvailable = page.getMediaBox().getHeight() - 2 * margin * mmPerInch;
+                                
+                                // Compare page format and image format
+                                if (widthAvailable / heightAvailable < (float) pdImage.getWidth() / (float) pdImage.getHeight()) {
+                                    float imageHeight = widthAvailable / pdImage.getWidth() * pdImage.getHeight();
+                                    contentStream.drawImage(pdImage, margin * mmPerInch, heightAvailable + margin * mmPerInch - imageHeight,
+                                            widthAvailable, imageHeight);
+                                } else {
+                                    float imageWidth = heightAvailable / pdImage.getHeight() * pdImage.getWidth();
+                                    contentStream.drawImage(pdImage, margin * mmPerInch, margin * mmPerInch,
+                                            imageWidth, heightAvailable);
+                                }
+                            } else {
+                                // Draw the image as is
+                                contentStream.drawImage(pdImage, margin * mmPerInch,
+                                        page.getMediaBox().getHeight() - pdImage.getHeight() - margin * mmPerInch);
+                            }
+                        }
+                        doc.addPage(page);
+                    } else {
+                        // Try to convert the file to PDF
+                        InputStream pdfInputStream = convertToPdf(file, storedFileInputStream, false);
+                        if (pdfInputStream != null) {
+                            // This file is convertible to PDF, just add it to the end
+                            try {
+                                PDDocument mergeDoc = PDDocument.load(pdfInputStream, memUsageSettings);
+                                closer.register(mergeDoc);
+                                PDFMergerUtility pdfMergerUtility = new PDFMergerUtility();
+                                pdfMergerUtility.appendDocument(doc, mergeDoc);
+                            } finally {
+                                pdfInputStream.close();
+                            }
+                        }
+                        
+                        // All other non-PDF-convertible files are ignored
+                    }
+                }
+            }
+            
+            // Save to a temporary file
+            try (TemporaryFileStream temporaryFileStream = new TemporaryFileStream()) {
+                doc.save(temporaryFileStream.openWriteStream());
+                closer.close(); // Close all remaining opened PDF
+                return temporaryFileStream.openReadStream();
+            }
+        }
+    }
 }
diff --git a/docs-core/src/main/java/com/sismics/docs/core/util/TemporaryFileStream.java b/docs-core/src/main/java/com/sismics/docs/core/util/TemporaryFileStream.java
new file mode 100644
index 00000000..9b357f05
--- /dev/null
+++ b/docs-core/src/main/java/com/sismics/docs/core/util/TemporaryFileStream.java
@@ -0,0 +1,55 @@
+package com.sismics.docs.core.util;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.UUID;
+
+/**
+ * Utilities for writing and reading to a temporary file.
+ * 
+ * @author bgamard
+ */
+public class TemporaryFileStream implements Closeable {
+    /**
+     * Temporary file.
+     */
+    private Path tempFile;
+    
+    /**
+     * Construct a temporary file.
+     * 
+     * @throws IOException
+     */
+    public TemporaryFileStream() throws IOException {
+        tempFile = Files.createTempFile(UUID.randomUUID().toString(), ".tmp");
+    }
+    
+    /**
+     * Open a stream for writing.
+     * 
+     * @return OutputStream
+     * @throws IOException
+     */
+    public OutputStream openWriteStream() throws IOException {
+        return Files.newOutputStream(tempFile);
+    }
+    
+    /**
+     * Open a stream for reading.
+     * 
+     * @return InputStream
+     * @throws IOException
+     */
+    public InputStream openReadStream() throws IOException {
+        return Files.newInputStream(tempFile);
+    }
+    
+    @Override
+    public void close() throws IOException {
+        Files.delete(tempFile);
+    }
+}
\ No newline at end of file
diff --git a/docs-core/src/main/java/com/sismics/util/mime/MimeType.java b/docs-core/src/main/java/com/sismics/util/mime/MimeType.java
index e5821a62..b85517ef 100644
--- a/docs-core/src/main/java/com/sismics/util/mime/MimeType.java
+++ b/docs-core/src/main/java/com/sismics/util/mime/MimeType.java
@@ -6,9 +6,6 @@ package com.sismics.util.mime;
  * @author jtremeaux 
  */
 public class MimeType {
-
-    public static final String IMAGE_X_ICON = "image/x-icon";
-    
     public static final String IMAGE_PNG = "image/png";
     
     public static final String IMAGE_JPEG = "image/jpeg";
diff --git a/docs-core/src/main/java/com/sismics/util/mime/MimeTypeUtil.java b/docs-core/src/main/java/com/sismics/util/mime/MimeTypeUtil.java
index 058f7f7d..fcb3d2ec 100644
--- a/docs-core/src/main/java/com/sismics/util/mime/MimeTypeUtil.java
+++ b/docs-core/src/main/java/com/sismics/util/mime/MimeTypeUtil.java
@@ -55,8 +55,6 @@ public class MimeTypeUtil {
         } else if (headerBytes[0] == ((byte) 0x89) && headerBytes[1] == ((byte) 0x50) && headerBytes[2] == ((byte) 0x4e) && headerBytes[3] == ((byte) 0x47) &&
                 headerBytes[4] == ((byte) 0x0d) && headerBytes[5] == ((byte) 0x0a) && headerBytes[6] == ((byte) 0x1a) && headerBytes[7] == ((byte) 0x0a)) {
             return MimeType.IMAGE_PNG;
-        } else if (headerBytes[0] == ((byte) 0x00) && headerBytes[1] == ((byte) 0x00) && headerBytes[2] == ((byte) 0x01) && headerBytes[3] == ((byte) 0x00)) {
-            return MimeType.IMAGE_X_ICON;
         } else if (headerBytes[0] == ((byte) 0x25) && headerBytes[1] == ((byte) 0x50) && headerBytes[2] == ((byte) 0x44) && headerBytes[3] == ((byte) 0x46)) {
             return MimeType.APPLICATION_PDF;
         }
@@ -80,8 +78,6 @@ public class MimeTypeUtil {
             return "jpg";
         case MimeType.IMAGE_PNG:
             return "png";
-        case MimeType.IMAGE_X_ICON:
-            return "ico";
         case MimeType.APPLICATION_PDF:
             return "pdf";
         case MimeType.OPEN_DOCUMENT_TEXT:
diff --git a/docs-core/src/test/java/com/sismics/docs/core/util/TestEncryptUtil.java b/docs-core/src/test/java/com/sismics/docs/core/util/TestEncryptUtil.java
index b6f54964..39477e5f 100644
--- a/docs-core/src/test/java/com/sismics/docs/core/util/TestEncryptUtil.java
+++ b/docs-core/src/test/java/com/sismics/docs/core/util/TestEncryptUtil.java
@@ -18,11 +18,6 @@ import com.google.common.io.ByteStreams;
  * @author bgamard
  */
 public class TestEncryptUtil {
-    /**
-     * Test private key.
-     */
-    String pk = "OnceUponATime";
-    
     @Test
     public void generatePrivateKeyTest() throws Exception {
         String key = EncryptionUtil.generatePrivateKey();
@@ -38,7 +33,7 @@ public class TestEncryptUtil {
         } catch (IllegalArgumentException e) {
             // NOP
         }
-        Cipher cipher = EncryptionUtil.getEncryptionCipher(pk);
+        Cipher cipher = EncryptionUtil.getEncryptionCipher("OnceUponATime");
         InputStream inputStream = new CipherInputStream(this.getClass().getResourceAsStream("/file/udhr.pdf"), cipher);
         byte[] encryptedData = ByteStreams.toByteArray(inputStream);
         byte[] assertData = ByteStreams.toByteArray(this.getClass().getResourceAsStream("/file/udhr_encrypted.pdf"));
@@ -48,7 +43,8 @@ public class TestEncryptUtil {
     
     @Test
     public void decryptStreamTest() throws Exception {
-        InputStream inputStream = EncryptionUtil.decryptInputStream(this.getClass().getResourceAsStream("/file/udhr_encrypted.pdf"), pk);
+        InputStream inputStream = EncryptionUtil.decryptInputStream(
+                this.getClass().getResourceAsStream("/file/udhr_encrypted.pdf"), "OnceUponATime");
         byte[] encryptedData = ByteStreams.toByteArray(inputStream);
         byte[] assertData = ByteStreams.toByteArray(this.getClass().getResourceAsStream("/file/udhr.pdf"));
         
diff --git a/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java b/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java
index 1482d88c..e8dff58a 100644
--- a/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java
+++ b/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java
@@ -1,13 +1,14 @@
 package com.sismics.docs.core.util;
 
-import java.io.ByteArrayInputStream;
 import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
 
 import junit.framework.Assert;
 
-import org.apache.pdfbox.io.IOUtils;
 import org.junit.Test;
 
+import com.google.common.collect.Lists;
 import com.google.common.io.Resources;
 import com.sismics.docs.core.model.jpa.File;
 import com.sismics.util.mime.MimeType;
@@ -20,11 +21,10 @@ import com.sismics.util.mime.MimeType;
 public class TestFileUtil {
     @Test
     public void extractContentOpenDocumentTextTest() throws Exception {
-        try (InputStream inputStream = Resources.getResource("file/document.odt").openStream();
-                InputStream bytesInputStream = new ByteArrayInputStream(IOUtils.toByteArray(inputStream))) {
+        try (InputStream inputStream = Resources.getResource("file/document.odt").openStream()) {
             File file = new File();
             file.setMimeType(MimeType.OPEN_DOCUMENT_TEXT);
-            try (InputStream pdfInputStream = FileUtil.convertToPdf(bytesInputStream, file)) {
+            try (InputStream pdfInputStream = FileUtil.convertToPdf(file, inputStream, false)) {
                 String content = FileUtil.extractContent(null, file, inputStream, pdfInputStream);
                 Assert.assertTrue(content.contains("Lorem ipsum dolor sit amen."));
             }
@@ -33,14 +33,55 @@ public class TestFileUtil {
     
     @Test
     public void extractContentOfficeDocumentTest() throws Exception {
-        try (InputStream inputStream = Resources.getResource("file/document.docx").openStream();
-                InputStream bytesInputStream = new ByteArrayInputStream(IOUtils.toByteArray(inputStream))) {
+        try (InputStream inputStream = Resources.getResource("file/document.docx").openStream()) {
             File file = new File();
             file.setMimeType(MimeType.OFFICE_DOCUMENT);
-            try (InputStream pdfInputStream = FileUtil.convertToPdf(bytesInputStream, file)) {
+            try (InputStream pdfInputStream = FileUtil.convertToPdf(file, inputStream, false)) {
                 String content = FileUtil.extractContent(null, file, inputStream, pdfInputStream);
                 Assert.assertTrue(content.contains("Lorem ipsum dolor sit amen."));
             }
         }
     }
+    
+    @Test
+    public void convertToPdfTest() throws Exception {
+        try (InputStream inputStream0 = Resources.getResource("file/apollo_landscape.jpg").openStream();
+                InputStream inputStream1 = Resources.getResource("file/apollo_portrait.jpg").openStream();
+                InputStream inputStream2 = Resources.getResource("file/udhr_encrypted.pdf").openStream();
+                InputStream inputStream3 = Resources.getResource("file/document.docx").openStream();
+                InputStream inputStream4 = Resources.getResource("file/document.odt").openStream()) {
+            // First file
+            Files.copy(inputStream0, DirectoryUtil.getStorageDirectory().resolve("apollo_landscape"), StandardCopyOption.REPLACE_EXISTING);
+            File file0 = new File();
+            file0.setId("apollo_landscape");
+            file0.setMimeType(MimeType.IMAGE_JPEG);
+            
+            // Second file
+            Files.copy(inputStream1, DirectoryUtil.getStorageDirectory().resolve("apollo_portrait"), StandardCopyOption.REPLACE_EXISTING);
+            File file1 = new File();
+            file1.setId("apollo_portrait");
+            file1.setMimeType(MimeType.IMAGE_JPEG);
+            
+            // Third file
+            Files.copy(inputStream2, DirectoryUtil.getStorageDirectory().resolve("udhr"), StandardCopyOption.REPLACE_EXISTING);
+            File file2 = new File();
+            file2.setId("udhr");
+            file2.setPrivateKey("OnceUponATime");
+            file2.setMimeType(MimeType.APPLICATION_PDF);
+            
+            // Fourth file
+            Files.copy(inputStream3, DirectoryUtil.getStorageDirectory().resolve("document_docx"), StandardCopyOption.REPLACE_EXISTING);
+            File file3 = new File();
+            file3.setId("document_docx");
+            file3.setMimeType(MimeType.OFFICE_DOCUMENT);
+            
+            // Fifth file
+            Files.copy(inputStream4, DirectoryUtil.getStorageDirectory().resolve("document_odt"), StandardCopyOption.REPLACE_EXISTING);
+            File file4 = new File();
+            file4.setId("document_odt");
+            file4.setMimeType(MimeType.OPEN_DOCUMENT_TEXT);
+            
+            FileUtil.convertToPdf(Lists.newArrayList(file0, file1, file2, file3, file4), true, 10).close();
+        }
+    }
 }
diff --git a/docs-core/src/test/resources/file/apollo_landscape.jpg b/docs-core/src/test/resources/file/apollo_landscape.jpg
new file mode 100644
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diff --git a/docs-parent/pom.xml b/docs-parent/pom.xml
index 40da3594..cf977d0b 100644
--- a/docs-parent/pom.xml
+++ b/docs-parent/pom.xml
@@ -30,7 +30,7 @@
     <org.mindrot.jbcrypt>0.3m</org.mindrot.jbcrypt>
     <org.apache.lucene.version>4.2.0</org.apache.lucene.version>
     <org.imgscalr.imgscalr-lib.version>4.2</org.imgscalr.imgscalr-lib.version>
-    <org.apache.pdfbox.pdfbox.version>2.0.0-RC1</org.apache.pdfbox.pdfbox.version>
+    <org.apache.pdfbox.pdfbox.version>2.0.0-RC2</org.apache.pdfbox.pdfbox.version>
     <org.bouncycastle.bcprov-jdk15on.version>1.53</org.bouncycastle.bcprov-jdk15on.version>
     <joda-time.joda-time.version>2.9.1</joda-time.joda-time.version>
     <org.hibernate.hibernate.version>4.1.0.Final</org.hibernate.hibernate.version>
diff --git a/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java b/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
index 4b37e080..539f79e2 100644
--- a/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
+++ b/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
@@ -150,7 +150,7 @@ public class FileResource extends BaseResource {
             file.setMimeType(MimeTypeUtil.guessOpenDocumentFormat(file, fileInputStream));
             
             // Convert to PDF if necessary (for thumbnail and text extraction)
-            InputStream pdfIntputStream = FileUtil.convertToPdf(fileInputStream, file);
+            InputStream pdfIntputStream = FileUtil.convertToPdf(file, fileInputStream, true);
             
             // Save the file
             FileUtil.save(fileInputStream, pdfIntputStream, file, user.getPrivateKey());