Android: Fixed sharing items from Joplin (#4718)

Ref: https://discourse.joplinapp.org/t/android-lost-access-to-resources/15716/4

.eslintignore

@@ -748,6 +748,9 @@ packages/app-mobile/setUpQuickActions.js.map
 packages/app-mobile/utils/ShareExtension.d.ts
 packages/app-mobile/utils/ShareExtension.js
 packages/app-mobile/utils/ShareExtension.js.map
+packages/app-mobile/utils/ShareUtils.d.ts
+packages/app-mobile/utils/ShareUtils.js
+packages/app-mobile/utils/ShareUtils.js.map
 packages/app-mobile/utils/checkPermissions.d.ts
 packages/app-mobile/utils/checkPermissions.js
 packages/app-mobile/utils/checkPermissions.js.map

.gitignore

@@ -735,6 +735,9 @@ packages/app-mobile/setUpQuickActions.js.map
 packages/app-mobile/utils/ShareExtension.d.ts
 packages/app-mobile/utils/ShareExtension.js
 packages/app-mobile/utils/ShareExtension.js.map
+packages/app-mobile/utils/ShareUtils.d.ts
+packages/app-mobile/utils/ShareUtils.js
+packages/app-mobile/utils/ShareUtils.js.map
 packages/app-mobile/utils/checkPermissions.d.ts
 packages/app-mobile/utils/checkPermissions.js
 packages/app-mobile/utils/checkPermissions.js.map

packages/app-mobile/components/NoteBodyViewer/hooks/useOnResourceLongPress.ts

@@ -1,12 +1,11 @@
 import { useCallback } from 'react';
-import Setting from '@joplin/lib/models/Setting';
-import shim from '@joplin/lib/shim';
 
 const { ToastAndroid } = require('react-native');
 const { _ } = require('@joplin/lib/locale.js');
 import { reg } from '@joplin/lib/registry';
 const { dialogs } = require('../../../utils/dialogs.js');
 import Resource from '@joplin/lib/models/Resource';
+import { copyToCache } from '../../../utils/ShareUtils';
 const Share = require('react-native-share').default;
 
 export default function useOnResourceLongPress(onJoplinLinkClick: Function, dialogBoxRef: any) {
@@ -24,21 +23,14 @@ export default function useOnResourceLongPress(onJoplinLinkClick: Function, dial
 			if (action === 'open') {
 				onJoplinLinkClick(`joplin://${resourceId}`);
 			} else if (action === 'share') {
-				const filename = resource.file_name ?
-					`${resource.file_name}.${resource.file_extension}` :
-					resource.title;
-				const targetPath = `${Setting.value('resourceDir')}/${filename}`;
-
-				await shim.fsDriver().copy(Resource.fullPath(resource), targetPath);
+				const fileToShare = await copyToCache(resource);
 
 				await Share.open({
 					type: resource.mime,
 					filename: resource.title,
-					url: `file://${targetPath}`,
+					url: `file://${fileToShare}`,
 					failOnCancel: false,
 				});
-
-				await shim.fsDriver().remove(targetPath);
 			}
 		} catch (e) {
 			reg.logger().error('Could not handle link long press', e);

packages/app-mobile/package.json

@@ -44,7 +44,7 @@
     "react-native-popup-menu": "^0.10.0",
     "react-native-quick-actions": "^0.3.13",
     "react-native-securerandom": "^1.0.0-rc.0",
-    "react-native-share": "^5.1.3",
+    "react-native-share": "^5.1.5",
     "react-native-side-menu": "^1.1.3",
     "react-native-sqlite-storage": "^5.0.0",
     "react-native-vector-icons": "^7.1.0",

packages/app-mobile/root.tsx

@@ -95,6 +95,7 @@ import FsDriverRN from './utils/fs-driver-rn';
 import DecryptionWorker from '@joplin/lib/services/DecryptionWorker';
 import EncryptionService from '@joplin/lib/services/EncryptionService';
 import MigrationService from '@joplin/lib/services/MigrationService';
+import { clearSharedFilesCache } from './utils/ShareUtils';
 
 let storeDispatch = function(_action: any) {};
 
@@ -564,6 +565,8 @@ async function initialize(dispatch: Function) {
 				folderId: folder.id,
 			});
 		}
+
+		await clearSharedFilesCache();
 	} catch (error) {
 		alert(`Initialization error: ${error.message}`);
 		reg.logger().error('Initialization error:', error);

packages/app-mobile/utils/ShareUtils.ts

@@ -0,0 +1,29 @@
+import Resource from '@joplin/lib/models/Resource';
+import { ResourceEntity } from '@joplin/lib/services/database/types';
+import shim from '@joplin/lib/shim';
+import { CachesDirectoryPath } from 'react-native-fs';
+
+const DIR_NAME = 'sharedFiles';
+
+/**
+ * Copy a file to be shared to cache, renaming it to its orignal name
+ */
+export async function copyToCache(resource: ResourceEntity): Promise<string> {
+	const filename = Resource.friendlySafeFilename(resource);
+
+	const targetDir = `${CachesDirectoryPath}/${DIR_NAME}`;
+	await shim.fsDriver().mkdir(targetDir);
+
+	const targetFile = `${targetDir}/${filename}`;
+
+	await shim.fsDriver().copy(Resource.fullPath(resource), targetFile);
+
+	return targetFile;
+}
+
+/**
+ * Clear previously shared files from cache
+ */
+export async function clearSharedFilesCache(): Promise<void> {
+	return shim.fsDriver().remove(`${CachesDirectoryPath}/sharedFiles`);
+}