Refactor db setup a bit

src/db/index.ts

@@ -9,59 +9,39 @@ import {
 } from "./tables/settings";
 import { AppString } from "@/constants/app";
 
-// a separate DB because the seed is super-sensitive data
-type SensitiveTables = {
-  accounts: Table<Account>;
-};
-
+// Define types for tables that hold sensitive and non-sensitive data
+type SensitiveTables = { accounts: Table<Account> };
 type NonsensitiveTables = {
   contacts: Table<Contact>;
   settings: Table<Settings>;
 };
 
-/**
- * In order to make the next line be acceptable, the program needs to have its linter suppress a rule:
- *   https://typescript-eslint.io/rules/no-unnecessary-type-constraint/
- *
- * and change *any* to *unknown*
- *
- *   https://9to5answer.com/how-to-bypass-warning-unexpected-any-specify-a-different-type-typescript-eslint-no-explicit-any
- */
+// Using 'unknown' instead of 'any' for stricter typing and to avoid TypeScript warnings
 export type SensitiveDexie<T extends unknown = SensitiveTables> = BaseDexie & T;
-export const accountsDB = new BaseDexie("TimeSafariAccounts") as SensitiveDexie;
-const SensitiveSchemas = Object.assign({}, AccountsSchema);
-
 export type NonsensitiveDexie<T extends unknown = NonsensitiveTables> =
   BaseDexie & T;
-export const db = new BaseDexie("TimeSafari") as NonsensitiveDexie;
-const NonsensitiveSchemas = Object.assign({}, ContactsSchema, SettingsSchema);
 
-/**
- * Needed to enable a special webpack setting to allow *await* below:
- *   https://stackoverflow.com/questions/72474803/error-the-top-level-await-experiment-is-not-enabled-set-experiments-toplevelaw
- */
+// Initialize Dexie databases for sensitive and non-sensitive data
+export const accountsDB = new BaseDexie("TimeSafariAccounts") as SensitiveDexie;
+const SensitiveSchemas = { ...AccountsSchema };
 
-/**
- * Create password and place password in localStorage.
- *
- * It's good practice to keep the data encrypted at rest, so we'll do that even
- * if the secret is stored right next to the app.
- */
+export const db = new BaseDexie("TimeSafari") as NonsensitiveDexie;
+const NonsensitiveSchemas = { ...ContactsSchema, ...SettingsSchema };
+
+// Manage the encryption key. If not present in localStorage, create and store it.
 const secret =
   localStorage.getItem("secret") || Encryption.createRandomEncryptionKey();
+if (!localStorage.getItem("secret")) localStorage.setItem("secret", secret);
 
-if (localStorage.getItem("secret") == null) {
-  localStorage.setItem("secret", secret);
-}
-
+// Apply encryption to the sensitive database using the secret key
 encrypted(accountsDB, { secretKey: secret });
-accountsDB.version(1).stores(SensitiveSchemas);
 
+// Define the schema for our databases
+accountsDB.version(1).stores(SensitiveSchemas);
 db.version(1).stores(NonsensitiveSchemas);
 
-// initialize, a la https://dexie.org/docs/Tutorial/Design#the-populate-event
-db.on("populate", function () {
-  // ensure there's an initial entry for settings
+// Event handler to initialize the non-sensitive database with default settings
+db.on("populate", () => {
   db.settings.add({
     id: MASTER_SETTINGS_KEY,
     apiServer: AppString.DEFAULT_ENDORSER_API_SERVER,