Clear all storage implemented

static/js/node_store.mjs

@@ -328,6 +328,52 @@ export class NodeStore {
 		this.nodes[ORPHANED_NODE] = new Node({ UUID: ORPHANED_NODE, Name: 'Orphaned nodes', Special: true }, -1)
 	}// }}}
 
+	deleteAll() {// {{{
+		this.db.close()
+
+		const req = indexedDB.deleteDatabase('notes')
+
+		req.onsuccess = async () => {
+			try {
+				console.log('Database deleted successfully')
+
+				// Deleting the storage will log out the user.
+				await this.deleteStorage()
+				await this.deleteCaches()
+				await this.deleteServiceWorkers()
+
+				alert('Database deleted, will now log out.')
+				location.href = '/login'
+			} catch (e) {
+				console.error(e)
+				alert(e.message)
+			}
+		}
+
+		req.onerror = (event) => {
+			console.error('Error deleting database:', event.target.errorCode)
+		}
+
+		req.onblocked = () => {
+			console.warn('Deletion blocked. Close all other tabs/connections to this DB.')
+		}
+	}// }}}
+	async deleteStorage() {// {{{
+		// Clearing local- and session-storage in case
+		// something of value to evil people gets stored there.
+		localStorage.clear()
+		sessionStorage.clear()
+		console.log('Local- and session-storage cleared.')
+	}// }}}
+	async deleteCaches() {// {{{
+		const keys = await caches.keys()
+		return Promise.all(keys.map(key => caches.delete(key)))
+	}// }}}
+	async deleteServiceWorkers() {// {{{
+		const registrations = await navigator.serviceWorker.getRegistrations()
+		await Promise.all(registrations.map(r => r.unregister()))
+	}// }}}
+
 	node(uuid, dataIfUndefined, newLevel) {//{{{
 		let n = this.nodes[uuid]
 		if (n === undefined && dataIfUndefined !== undefined)