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/webid/UnlinkWebIdHandler.test.ts

@@ -0,0 +1,42 @@
+import type { Account } from '../../../../../src/identity/interaction/account/util/Account';
+import type { AccountStore } from '../../../../../src/identity/interaction/account/util/AccountStore';
+import { UnlinkWebIdHandler } from '../../../../../src/identity/interaction/webid/UnlinkWebIdHandler';
+import type { WebIdStore } from '../../../../../src/identity/interaction/webid/util/WebIdStore';
+import { NotFoundHttpError } from '../../../../../src/util/errors/NotFoundHttpError';
+import { createAccount, mockAccountStore } from '../../../../util/AccountUtil';
+
+describe('A UnlinkWebIdHandler', (): void => {
+  const resource = 'http://example.com/.account/link';
+  const webId = 'http://example.com/.account/card#me';
+  const accountId = 'accountId';
+  let account: Account;
+  let accountStore: jest.Mocked<AccountStore>;
+  let webIdStore: jest.Mocked<WebIdStore>;
+  let handler: UnlinkWebIdHandler;
+
+  beforeEach(async(): Promise<void> => {
+    account = createAccount(accountId);
+    account.webIds[webId] = resource;
+
+    accountStore = mockAccountStore(account);
+
+    webIdStore = {
+      get: jest.fn(),
+      add: jest.fn(),
+      delete: jest.fn(),
+    };
+
+    handler = new UnlinkWebIdHandler(accountStore, webIdStore);
+  });
+
+  it('removes the WebID link.', async(): Promise<void> => {
+    await expect(handler.handle({ target: { path: resource }, accountId } as any)).resolves.toEqual({ json: {}});
+    expect(webIdStore.delete).toHaveBeenCalledTimes(1);
+    expect(webIdStore.delete).toHaveBeenLastCalledWith(webId, account);
+  });
+
+  it('errors if there is no matching link resource.', async(): Promise<void> => {
+    delete account.webIds[webId];
+    await expect(handler.handle({ target: { path: resource }, accountId } as any)).rejects.toThrow(NotFoundHttpError);
+  });
+});