All: Use Lerna to manage monorepo

packages/app-desktop/gui/NoteEditor/utils/useMessageHandler.ts

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+import { useCallback } from 'react';
+import { FormNote } from './types';
+import contextMenu from './contextMenu';
+import ResourceEditWatcher from '@joplinapp/lib/services/ResourceEditWatcher/index';
+import { _ } from '@joplinapp/lib/locale';
+const BaseItem = require('@joplinapp/lib/models/BaseItem');
+const BaseModel = require('@joplinapp/lib/BaseModel').default;
+const Resource = require('@joplinapp/lib/models/Resource.js');
+const bridge = require('electron').remote.require('./bridge').default;
+const { urlDecode } = require('@joplinapp/lib/string-utils');
+const urlUtils = require('@joplinapp/lib/urlUtils');
+const ResourceFetcher = require('@joplinapp/lib/services/ResourceFetcher.js');
+const { reg } = require('@joplinapp/lib/registry.js');
+
+export default function useMessageHandler(scrollWhenReady:any, setScrollWhenReady:Function, editorRef:any, setLocalSearchResultCount:Function, dispatch:Function, formNote:FormNote) {
+	return useCallback(async (event: any) => {
+		const msg = event.channel ? event.channel : '';
+		const args = event.args;
+		const arg0 = args && args.length >= 1 ? args[0] : null;
+
+		// if (msg !== 'percentScroll') console.info(`Got ipc-message: ${msg}`, arg0);
+
+		if (msg.indexOf('error:') === 0) {
+			const s = msg.split(':');
+			s.splice(0, 1);
+			reg.logger().error(s.join(':'));
+		} else if (msg === 'noteRenderComplete') {
+			if (scrollWhenReady) {
+				const options = { ...scrollWhenReady };
+				setScrollWhenReady(null);
+				editorRef.current.scrollTo(options);
+			}
+		} else if (msg === 'setMarkerCount') {
+			setLocalSearchResultCount(arg0);
+		} else if (msg.indexOf('markForDownload:') === 0) {
+			const s = msg.split(':');
+			if (s.length < 2) throw new Error(`Invalid message: ${msg}`);
+			ResourceFetcher.instance().markForDownload(s[1]);
+		} else if (msg === 'contextMenu') {
+			const menu = await contextMenu({
+				itemType: arg0 && arg0.type,
+				resourceId: arg0.resourceId,
+				textToCopy: arg0.textToCopy,
+				linkToCopy: arg0.linkToCopy || null,
+				htmlToCopy: '',
+				insertContent: () => { console.warn('insertContent() not implemented'); },
+			});
+
+			menu.popup(bridge().window());
+		} else if (msg.indexOf('joplin://') === 0) {
+			const resourceUrlInfo = urlUtils.parseResourceUrl(msg);
+			const itemId = resourceUrlInfo.itemId;
+			const item = await BaseItem.loadItemById(itemId);
+
+			if (!item) throw new Error(`No item with ID ${itemId}`);
+
+			if (item.type_ === BaseModel.TYPE_RESOURCE) {
+				const localState = await Resource.localState(item);
+				if (localState.fetch_status !== Resource.FETCH_STATUS_DONE || !!item.encryption_blob_encrypted) {
+					if (localState.fetch_status === Resource.FETCH_STATUS_ERROR) {
+						bridge().showErrorMessageBox(`${_('There was an error downloading this attachment:')}\n\n${localState.fetch_error}`);
+					} else {
+						bridge().showErrorMessageBox(_('This attachment is not downloaded or not decrypted yet'));
+					}
+					return;
+				}
+
+				try {
+					await ResourceEditWatcher.instance().openAndWatch(item.id);
+				} catch (error) {
+					console.error(error);
+					bridge().showErrorMessageBox(error.message);
+				}
+			} else if (item.type_ === BaseModel.TYPE_NOTE) {
+				dispatch({
+					type: 'FOLDER_AND_NOTE_SELECT',
+					folderId: item.parent_id,
+					noteId: item.id,
+					hash: resourceUrlInfo.hash,
+				});
+			} else {
+				throw new Error(`Unsupported item type: ${item.type_}`);
+			}
+		} else if (urlUtils.urlProtocol(msg)) {
+			if (msg.indexOf('file://') === 0) {
+				// When using the file:// protocol, openExternal doesn't work (does nothing) with URL-encoded paths
+				require('electron').shell.openExternal(urlDecode(msg));
+			} else {
+				require('electron').shell.openExternal(msg);
+			}
+		} else if (msg.indexOf('#') === 0) {
+			// This is an internal anchor, which is handled by the WebView so skip this case
+		} else {
+			bridge().showErrorMessageBox(_('Unsupported link or message: %s', msg));
+		}
+	}, [dispatch, setLocalSearchResultCount, scrollWhenReady, formNote]);
+}