feat: Full rework of account management

Complete rewrite of the account management and related systems.
Makes the architecture more modular,
allowing for easier extensions and configurations.

test/unit/identity/interaction/account/util/BaseAccountStore.test.ts

@@ -0,0 +1,54 @@
+import type { Account } from '../../../../../../src/identity/interaction/account/util/Account';
+import { BaseAccountStore } from '../../../../../../src/identity/interaction/account/util/BaseAccountStore';
+import type { ExpiringStorage } from '../../../../../../src/storage/keyvalue/ExpiringStorage';
+import { NotFoundHttpError } from '../../../../../../src/util/errors/NotFoundHttpError';
+import { createAccount } from '../../../../../util/AccountUtil';
+
+jest.mock('uuid', (): any => ({ v4: (): string => '4c9b88c1-7502-4107-bb79-2a3a590c7aa3' }));
+
+describe('A BaseAccountStore', (): void => {
+  let account: Account;
+  let storage: jest.Mocked<ExpiringStorage<string, Account>>;
+  let store: BaseAccountStore;
+
+  beforeEach(async(): Promise<void> => {
+    account = createAccount('4c9b88c1-7502-4107-bb79-2a3a590c7aa3');
+
+    storage = {
+      get: jest.fn().mockResolvedValue(account),
+      set: jest.fn(),
+    } as any;
+
+    store = new BaseAccountStore(storage);
+  });
+
+  it('creates an empty account.', async(): Promise<void> => {
+    await expect(store.create()).resolves.toEqual(account);
+    expect(storage.set).toHaveBeenCalledTimes(1);
+    expect(storage.set).toHaveBeenLastCalledWith(account.id, account, 30 * 60 * 1000);
+  });
+
+  it('stores the new data when updating.', async(): Promise<void> => {
+    // This line is here just for 100% coverage
+    account.logins.empty = undefined;
+    account.logins.method = { key: 'value' };
+    await expect(store.update(account)).resolves.toBeUndefined();
+    expect(storage.set).toHaveBeenCalledTimes(1);
+    expect(storage.set).toHaveBeenLastCalledWith(account.id, account);
+  });
+
+  it('errors when trying to update without login methods.', async(): Promise<void> => {
+    await expect(store.update(account)).rejects.toThrow('An account needs at least 1 login method.');
+    expect(storage.get).toHaveBeenCalledTimes(1);
+    expect(storage.get).toHaveBeenLastCalledWith(account.id);
+    expect(storage.set).toHaveBeenCalledTimes(0);
+  });
+
+  it('throws a 404 if the account is not known when updating.', async(): Promise<void> => {
+    storage.get.mockResolvedValueOnce(undefined);
+    await expect(store.update(account)).rejects.toThrow(NotFoundHttpError);
+    expect(storage.get).toHaveBeenCalledTimes(1);
+    expect(storage.get).toHaveBeenLastCalledWith(account.id);
+    expect(storage.set).toHaveBeenCalledTimes(0);
+  });
+});