From ef8879bca38161085e1ac58f517f464d848f142f Mon Sep 17 00:00:00 2001
From: David Edwards <david.edwards@alfresco.com>
Date: Fri, 3 Apr 2020 11:34:01 +0100
Subject: [PATCH] ATS-675/ATS-695 Added PdfRendererApadpter.java

Added dependency to pom.xml
Required transformation of String to Long, method added to Util.java
---
 .../alfresco-transform-core-aio/pom.xml       |  5 ++
 .../transformers/PdfRendererAdapter.java      | 83 +++++++++++++++++++
 .../org/alfresco/transformer/util/Util.java   | 11 +++
 3 files changed, 99 insertions(+)
 create mode 100644 alfresco-transform-core-aio/alfresco-transform-core-aio/src/main/java/org/alfresco/transformer/transformers/PdfRendererAdapter.java

diff --git a/alfresco-transform-core-aio/alfresco-transform-core-aio/pom.xml b/alfresco-transform-core-aio/alfresco-transform-core-aio/pom.xml
index 0d97ed26..32bf338f 100644
--- a/alfresco-transform-core-aio/alfresco-transform-core-aio/pom.xml
+++ b/alfresco-transform-core-aio/alfresco-transform-core-aio/pom.xml
@@ -30,6 +30,11 @@
             <artifactId>alfresco-transform-tika</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.alfresco</groupId>
+            <artifactId>alfresco-transform-pdf-renderer</artifactId>
+            <version>${project.version}</version>
+        </dependency>
 
         <dependency>
             <groupId>junit</groupId>
diff --git a/alfresco-transform-core-aio/alfresco-transform-core-aio/src/main/java/org/alfresco/transformer/transformers/PdfRendererAdapter.java b/alfresco-transform-core-aio/alfresco-transform-core-aio/src/main/java/org/alfresco/transformer/transformers/PdfRendererAdapter.java
new file mode 100644
index 00000000..2a4d92ba
--- /dev/null
+++ b/alfresco-transform-core-aio/alfresco-transform-core-aio/src/main/java/org/alfresco/transformer/transformers/PdfRendererAdapter.java
@@ -0,0 +1,83 @@
+/*
+ * #%L
+ * Alfresco Transform Core
+ * %%
+ * Copyright (C) 2005 - 2020 Alfresco Software Limited
+ * %%
+ * This file is part of the Alfresco software.
+ * -
+ * If the software was purchased under a paid Alfresco license, the terms of
+ * the paid license agreement will prevail.  Otherwise, the software is
+ * provided under the following open source license terms:
+ * -
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * -
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * -
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ * #L%
+ */
+package org.alfresco.transformer.transformers;
+
+import static org.alfresco.transformer.util.Util.stringToLong;
+
+import java.io.File;
+import java.util.Map;
+
+import org.alfresco.transformer.executors.PdfRendererCommandExecutor;
+import org.alfresco.transformer.PdfRendererOptionsBuilder;
+
+
+public class PdfRendererAdapter extends AbstractTransformer
+{
+    private static String CONFIG_PREFIX = "pdf-renderer";
+    private PdfRendererCommandExecutor pdfExecutor;
+    
+    //TODO move key strings to a central class
+    private final static String PAGE_REQUEST_PARAM = "page";    
+    private final static String WIDTH_REQUEST_PARAM = "width";
+    private final static String HEIGHT_REQUEST_PARAM = "height";
+    private final static String ALLOW_PDF_ENLARGEMENT = "allowPdfEnlargement";
+    private final static String MAINTAIN_PDF_ASPECT_RATIO = "maintainPdfAspectRatio";
+    private final static String TIMEOUT_REQUEST_PARAM = "timeout";
+
+
+    public PdfRendererAdapter() throws Exception
+    {
+        super();
+        pdfExecutor = new PdfRendererCommandExecutor();
+    }
+
+    @Override
+    String getTransformerConfigPrefix() 
+    {
+		return CONFIG_PREFIX;
+	}
+
+	@Override
+	public void transform(File sourceFile, File targetFile, String sourceMimetype, String targetMimetype,
+            Map<String, String> transformOptions) throws Exception 
+    {
+       
+        final String options = PdfRendererOptionsBuilder
+            .builder()
+            .withPage(transformOptions.get(PAGE_REQUEST_PARAM))
+            .withWidth(transformOptions.get(WIDTH_REQUEST_PARAM))
+            .withHeight(transformOptions.get(HEIGHT_REQUEST_PARAM))
+            .withAllowPdfEnlargement(transformOptions.get(ALLOW_PDF_ENLARGEMENT))
+            .withMaintainPdfAspectRatio(transformOptions.get(MAINTAIN_PDF_ASPECT_RATIO))
+            .build();
+
+        Long timeout = stringToLong(transformOptions.get(TIMEOUT_REQUEST_PARAM));
+
+        pdfExecutor.run(options, sourceFile, targetFile, timeout);
+	}
+	
+}
\ No newline at end of file
diff --git a/alfresco-transformer-base/src/main/java/org/alfresco/transformer/util/Util.java b/alfresco-transformer-base/src/main/java/org/alfresco/transformer/util/Util.java
index 2f24b1f0..ead426a0 100644
--- a/alfresco-transformer-base/src/main/java/org/alfresco/transformer/util/Util.java
+++ b/alfresco-transformer-base/src/main/java/org/alfresco/transformer/util/Util.java
@@ -52,4 +52,15 @@ public class Util
     {
         return param == null ? null : Boolean.parseBoolean(param);
     }
+
+    /**
+     * Safely converts a {@link String} to a {@link Long}
+     *
+     * @param param String to be converted
+     * @return Null if param is null or converted value as {@link Boolean}
+     */
+    public static Long stringToLong(final String param)
+    {
+        return param == null ? null : Long.parseLong(param);
+    }
 }