Patch to implement feature, exporting notes to JSON (#912, issues/912). (#927)

* Patch to implement feature, exporting notes to JSON (#912, issues/912).

* Revising based on feedback

* Directly calling JSON.stringify on the item

CliClient/tests/services_InteropService.js

@@ -310,4 +310,25 @@ describe('services_InteropService', function() {
 		expect(note2_2.body.indexOf(note1_2.id) >= 0).toBe(true);
 	}));
 
+	it('should export into json format', asyncTest(async () => {
+		const service = new InteropService();
+		let folder1 = await Folder.save({ title: 'folder1' });
+		let note1 = await Note.save({ title: 'ma note', parent_id: folder1.id });
+		note1 = await Note.load(note1.id);
+		const filePath = exportDir();
+
+		await service.export({ path: filePath, format: 'json' });
+
+		// verify that the json files exist and can be parsed
+		const items = [folder1, note1];
+		for (let i = 0; i < items.length; i++) {
+			const jsonFile = filePath + '/' + items[i].id + '.json'; 
+			let json = await fs.readFile(jsonFile, 'utf-8');
+			let obj = JSON.parse(json);
+			expect(obj.id).toBe(items[i].id);
+			expect(obj.type_).toBe(items[i].type_);
+			expect(obj.title).toBe(items[i].title);
+			expect(obj.body).toBe(items[i].body);
+		}
+	}));
 });

ReactNativeClient/lib/models/BaseItem.js

@@ -75,9 +75,14 @@ class BaseItem extends BaseModel {
 		return r.total;
 	}
 
-	static systemPath(itemOrId) {
-		if (typeof itemOrId === 'string') return itemOrId + '.md';
-		return itemOrId.id + '.md';
+	static systemPath(itemOrId, extension = null) {
+		if (extension === null)
+			extension = 'md';
+
+		if (typeof itemOrId === 'string')
+			return itemOrId + '.' + extension;
+		else
+			return itemOrId.id + '.' + extension;
 	}
 
 	static isSystemPath(path) {

ReactNativeClient/lib/services/InteropService.js

@@ -58,6 +58,10 @@ class InteropService {
 				format: 'raw',
 				target: 'directory',
 				description: _('Joplin Export Directory'),
+			}, {
+				format: 'json',
+				target: 'directory',
+				description: _('Json Export Directory'),
 			}, {
 				format: 'md',
 				target: 'directory',

ReactNativeClient/lib/services/InteropService_Exporter_Json.js

@@ -0,0 +1,30 @@
+const InteropService_Exporter_Base = require('lib/services/InteropService_Exporter_Base');
+const { basename, filename } = require('lib/path-utils.js');
+const { shim } = require('lib/shim');
+
+class InteropService_Exporter_Json extends InteropService_Exporter_Base {
+
+	async init(destDir) {
+		this.destDir_ = destDir;
+		this.resourceDir_ = destDir ? destDir + '/resources' : null;
+
+		await shim.fsDriver().mkdir(this.destDir_);
+		await shim.fsDriver().mkdir(this.resourceDir_);
+	}
+
+	async processItem(ItemClass, item) {
+		const fileName = ItemClass.systemPath(item, "json");
+		const filePath = this.destDir_ + '/' + fileName;
+		const serialized = JSON.stringify(item);
+		await shim.fsDriver().writeFile(filePath, serialized, 'utf-8');
+	}
+
+	async processResource(resource, filePath) {
+		const destResourcePath = this.resourceDir_ + '/' + basename(filePath);
+		await shim.fsDriver().copy(filePath, destResourcePath);
+	}
+
+	async close() {}
+}
+
+module.exports = InteropService_Exporter_Json;