Delete the processed document if it already exists in the Catalog example

Author: Rad Azzouz

samples/Catalog/Catalog.ios.js

@@ -1057,6 +1057,12 @@ class AnnotationProcessing extends Component {
               onPress={async () => {
                 const processedDocumentPath =
                   RNFS.DocumentDirectoryPath + "/embedded.pdf";
+                // Delete the processed document if it already exists.
+                RNFS.exists(processedDocumentPath).then(exists => {
+                  if (exists) {
+                    RNFS.unlink(processedDocumentPath);
+                  }
+                });
                 // First, save all annotations in the current document.
                 await this.refs.pdfView.saveCurrentDocument().then(success => {
                   if (success) {
@@ -1091,7 +1097,14 @@ class AnnotationProcessing extends Component {
               onPress={async () => {
                 const processedDocumentPath =
                   RNFS.DocumentDirectoryPath + "/flattened.pdf";
+                // Delete the processed document if it already exists.
+                RNFS.exists(processedDocumentPath).then(exists => {
+                  if (exists) {
+                    RNFS.unlink(processedDocumentPath);
+                  }
+                });
                 // First, save all annotations in the current document.
+
                 await this.refs.pdfView.saveCurrentDocument().then(success => {
                   if (success) {
                     // Then, flatten all the annotations
@@ -1125,6 +1138,12 @@ class AnnotationProcessing extends Component {
               onPress={async () => {
                 const processedDocumentPath =
                   RNFS.DocumentDirectoryPath + "/removed.pdf";
+                // Delete the processed document if it already exists.
+                RNFS.exists(processedDocumentPath).then(exists => {
+                  if (exists) {
+                    RNFS.unlink(processedDocumentPath);
+                  }
+                });
                 // First, save all annotations in the current document.
                 await this.refs.pdfView.saveCurrentDocument().then(success => {
                   if (success) {
@@ -1159,6 +1178,12 @@ class AnnotationProcessing extends Component {
               onPress={async () => {
                 const processedDocumentPath =
                   RNFS.DocumentDirectoryPath + "/printed.pdf";
+                // Delete the processed document if it already exists.
+                RNFS.exists(processedDocumentPath).then(exists => {
+                  if (exists) {
+                    RNFS.unlink(processedDocumentPath);
+                  }
+                });
                 // First, save all annotations in the current document.
                 await this.refs.pdfView.saveCurrentDocument().then(success => {
                   if (success) {