Download all files from a document as ZIP

docs-core/src/main/java/com/sismics/util/mime/MimeTypeUtil.java

@@ -56,4 +56,29 @@ public static String guessMimeType(byte[] headerBytes) throws UnsupportedEncodin
 
         return null;
     }
+
+    /**
+     * Get a file extension linked to a MIME type.
+     * 
+     * @param mimeType MIME type
+     * @return File extension
+     */
+    public static String getFileExtension(String mimeType) {
+        switch (mimeType) {
+        case MimeType.APPLICATION_ZIP:
+            return "zip";
+        case MimeType.IMAGE_GIF:
+            return "gif";
+        case MimeType.IMAGE_JPEG:
+            return "jpg";
+        case MimeType.IMAGE_PNG:
+            return "png";
+        case MimeType.IMAGE_X_ICON:
+            return "ico";
+        case MimeType.APPLICATION_PDF:
+            return "pdf";
+        default:
+            return null;
+        }
+    }
 }

docs-parent/TODO

@@ -1,3 +1,2 @@
 - Automatic backup system using Quartz (server)
 - Handle error while uploading a file
-- Download all files as zip (docs & share)

docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java

@@ -11,6 +11,8 @@
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 
 import javax.persistence.NoResultException;
 import javax.ws.rs.Consumes;
@@ -372,4 +374,75 @@ public void write(OutputStream outputStream) throws IOException, WebApplicationE
                 .header("Expires", new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z").format(new Date().getTime() + 3600000 * 24))
                 .build();
     }
+
+    /**
+     * Returns all files from a document, zipped.
+     * 
+     * @param documentId Document ID
+     * @return Response
+     * @throws JSONException
+     */
+    @GET
+    @Path("zip")
+    @Produces(MediaType.APPLICATION_OCTET_STREAM)
+    public Response zip(
+            @QueryParam("id") String documentId,
+            @QueryParam("share") String shareId) throws JSONException {
+        authenticate();
+
+        // Get the document
+        DocumentDao documentDao = new DocumentDao();
+        Document document;
+        try {
+            document = documentDao.getDocument(documentId);
+
+            // Check document visibility
+            ShareDao shareDao = new ShareDao();
+            if (!shareDao.checkVisibility(document, principal.getId(), shareId)) {
+                throw new ForbiddenClientException();
+            }
+        } catch (NoResultException e) {
+            throw new ClientException("DocumentNotFound", MessageFormat.format("Document not found: {0}", documentId));
+        }
+
+        // Get files and user associated with this document
+        FileDao fileDao = new FileDao();
+        UserDao userDao = new UserDao();
+        final List<File> fileList = fileDao.getByDocumentId(documentId);
+        final User user = userDao.getById(document.getUserId());
+
+        // Create the ZIP stream
+        StreamingOutput stream = new StreamingOutput() {
+            @Override
+            public void write(OutputStream outputStream) throws IOException, WebApplicationException {
+                try (ZipOutputStream zipOutputStream = new ZipOutputStream(outputStream)) {
+                    // Add each file to the ZIP stream
+                    int index = 0;
+                    for (File file : fileList) {
+                        java.io.File storedfile = Paths.get(DirectoryUtil.getStorageDirectory().getPath(), file.getId()).toFile();
+                        InputStream fileInputStream = new FileInputStream(storedfile);
+
+                        // Add the decrypted file to the ZIP stream
+                        try (InputStream decryptedStream = EncryptionUtil.decryptInputStream(fileInputStream, user.getPrivateKey())) {
+                            ZipEntry zipEntry = new ZipEntry(index + "." + MimeTypeUtil.getFileExtension(file.getMimeType()));
+                            zipOutputStream.putNextEntry(zipEntry);
+                            ByteStreams.copy(decryptedStream, zipOutputStream);
+                            zipOutputStream.closeEntry();
+                        } catch (Exception e) {
+                            e.printStackTrace();
+                            throw new WebApplicationException(e);
+                        }
+                        index++;
+                    }
+                }
+                outputStream.close();
+            }
+        };
+
+        // Write to the output
+        return Response.ok(stream)
+                .header("Content-Type", "application/zip")
+                .header("Content-Disposition", "attachment; filename=\"" + document.getTitle().replaceAll("\\W+", "_") + ".zip\"")
+                .build();
+    }
 }

docs-web/src/main/webapp/src/partial/docs/document.view.html

@@ -9,7 +9,13 @@
 	</div>
 
 	<div class="page-header">
-	  <h1>{{ document.title }} <small>{{ document.create_date | date: 'yyyy-MM-dd' }}</small> <img ng-if="document" ng-src="img/flag/{{ document.language }}.png" title="{{ document.language }}" /></h1>
+	  <h1>
+      {{ document.title }} <small>{{ document.create_date | date: 'yyyy-MM-dd' }}</small>
+      <img ng-if="document" ng-src="img/flag/{{ document.language }}.png" title="{{ document.language }}" />
+      <a ng-href="../api/file/zip?id={{ document.id }}" class="btn btn-default" title="Download all files">
+        <span class="glyphicon glyphicon-compressed"></span>
+      </a>
+    </h1>
 	  <p>
 	    <button class="btn btn-sm btn-info" ng-click="share()">
         <span class="glyphicon glyphicon-share"></span> Share

docs-web/src/main/webapp/src/partial/share/share.html

@@ -1,7 +1,12 @@
 <div class="row">
   <div class="well col-md-12">
     <div class="page-header">
-      <h1>{{ document.title }} <small>{{ document.create_date | date: 'yyyy-MM-dd' }}</small></h1>
+      <h1>
+        {{ document.title }} <small>{{ document.create_date | date: 'yyyy-MM-dd' }}</small>
+        <a ng-href="../api/file/zip?id={{ document.id }}&share={{ $stateParams.shareId }}" class="btn btn-default" title="Download all files">
+          <span class="glyphicon glyphicon-compressed"></span>
+        </a>
+      </h1>
       <ul class="list-inline">
         <li ng-repeat="tag in document.tags"><span class="label label-info" ng-style="{ 'background': tag.color }">{{ tag.name }}</span></li>
       </ul>

docs-web/src/test/java/com/sismics/docs/rest/TestFileResource.java

@@ -160,6 +160,16 @@ public void testFileResource() throws Exception {
         Assert.assertEquals(file2Id, files.getJSONObject(0).getString("id"));
         Assert.assertEquals(file1Id, files.getJSONObject(1).getString("id"));
 
+        // Get a ZIP from all files
+        fileResource = resource().path("/file/zip");
+        fileResource.addFilter(new CookieAuthenticationFilter(file1AuthenticationToken));
+        getParams = new MultivaluedMapImpl();
+        getParams.putSingle("id", document1Id);
+        response = fileResource.queryParams(getParams).get(ClientResponse.class);
+        is = response.getEntityInputStream();
+        fileBytes = ByteStreams.toByteArray(is);
+        Assert.assertEquals(MimeType.APPLICATION_ZIP, MimeTypeUtil.guessMimeType(fileBytes));
+
         // Deletes a file
         fileResource = resource().path("/file/" + file1Id);
         fileResource.addFilter(new CookieAuthenticationFilter(file1AuthenticationToken));