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/client-credentials/DeleteClientCredentialsHandler.test.ts

@@ -0,0 +1,48 @@
+import type { Account } from '../../../../../src/identity/interaction/account/util/Account';
+import type { AccountStore } from '../../../../../src/identity/interaction/account/util/AccountStore';
+import {
+  DeleteClientCredentialsHandler,
+} from '../../../../../src/identity/interaction/client-credentials/DeleteClientCredentialsHandler';
+import type {
+  ClientCredentialsStore,
+} from '../../../../../src/identity/interaction/client-credentials/util/ClientCredentialsStore';
+import { NotFoundHttpError } from '../../../../../src/util/errors/NotFoundHttpError';
+import { createAccount, mockAccountStore } from '../../../../util/AccountUtil';
+
+describe('A DeleteClientCredentialsHandler', (): void => {
+  let account: Account;
+  const id = 'token_id';
+  const target = { path: 'http://example.com/.account/my_token' };
+  let accountStore: jest.Mocked<AccountStore>;
+  let clientCredentialsStore: jest.Mocked<ClientCredentialsStore>;
+  let handler: DeleteClientCredentialsHandler;
+
+  beforeEach(async(): Promise<void> => {
+    account = createAccount();
+    account.clientCredentials[id] = target.path;
+
+    accountStore = mockAccountStore(account);
+
+    clientCredentialsStore = {
+      delete: jest.fn(),
+    } as any;
+
+    handler = new DeleteClientCredentialsHandler(accountStore, clientCredentialsStore);
+  });
+
+  it('deletes the token.', async(): Promise<void> => {
+    await expect(handler.handle({ target, accountId: account.id } as any)).resolves.toEqual({ json: {}});
+    expect(accountStore.get).toHaveBeenCalledTimes(1);
+    expect(accountStore.get).toHaveBeenLastCalledWith(account.id);
+    expect(clientCredentialsStore.delete).toHaveBeenCalledTimes(1);
+    expect(clientCredentialsStore.delete).toHaveBeenLastCalledWith(id, account);
+  });
+
+  it('throws a 404 if there is no such token.', async(): Promise<void> => {
+    delete account.clientCredentials[id];
+    await expect(handler.handle({ target, accountId: account.id } as any)).rejects.toThrow(NotFoundHttpError);
+    expect(accountStore.get).toHaveBeenCalledTimes(1);
+    expect(accountStore.get).toHaveBeenLastCalledWith(account.id);
+    expect(clientCredentialsStore.delete).toHaveBeenCalledTimes(0);
+  });
+});