chore: Enhance contact merge action for identified users (#4886)

- Discard conflicting keys 
- Do not merge if there is already an identified contact

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/widget/store/modules/specs/contact/actions.spec.js

@@ -1,21 +1,26 @@
 import { API } from 'widget/helpers/axios';
+import { sendMessage } from 'widget/helpers/utils';
 import { actions } from '../../contacts';
-
 const commit = jest.fn();
 const dispatch = jest.fn();
 jest.mock('widget/helpers/axios');
+jest.mock('widget/helpers/utils', () => ({
+  sendMessage: jest.fn(),
+}));
 
 describe('#actions', () => {
-  describe('#update', () => {
-    it('sends correct actions', async () => {
+  describe('#setUser', () => {
+    it('sends correct actions if contact object is refreshed ', async () => {
       const user = {
         email: 'thoma@sphadikam.com',
         name: 'Adu Thoma',
         avatar_url: '',
-        identifier_hash: 'random_hex_identifier_hash',
       };
-      API.patch.mockResolvedValue({ data: { pubsub_token: 'token' } });
-      await actions.update({ commit, dispatch }, { identifier: 1, user });
+      API.patch.mockResolvedValue({ data: { widget_auth_token: 'token' } });
+      await actions.setUser({ commit, dispatch }, { identifier: 1, user });
+      expect(sendMessage.mock.calls).toEqual([
+        [{ data: { widgetAuthToken: 'token' }, event: 'setAuthCookie' }],
+      ]);
       expect(commit.mock.calls).toEqual([]);
       expect(dispatch.mock.calls).toEqual([
         ['get'],
@@ -24,5 +29,52 @@ describe('#actions', () => {
         ['conversationAttributes/getAttributes', {}, { root: true }],
       ]);
     });
+
+    it('sends correct actions if identifierHash is passed ', async () => {
+      const user = {
+        email: 'thoma@sphadikam.com',
+        name: 'Adu Thoma',
+        avatar_url: '',
+        identifier_hash: '12345',
+      };
+      API.patch.mockResolvedValue({ data: { id: 1 } });
+      await actions.setUser({ commit, dispatch }, { identifier: 1, user });
+      expect(sendMessage.mock.calls).toEqual([]);
+      expect(commit.mock.calls).toEqual([]);
+      expect(dispatch.mock.calls).toEqual([
+        ['get'],
+        ['conversation/clearConversations', {}, { root: true }],
+        ['conversation/fetchOldConversations', {}, { root: true }],
+        ['conversationAttributes/getAttributes', {}, { root: true }],
+      ]);
+    });
+
+    it('does not call sendMessage if contact object is not refreshed ', async () => {
+      const user = {
+        email: 'thoma@sphadikam.com',
+        name: 'Adu Thoma',
+        avatar_url: '',
+      };
+      API.patch.mockResolvedValue({ data: { id: 1 } });
+      await actions.setUser({ commit, dispatch }, { identifier: 1, user });
+      expect(sendMessage.mock.calls).toEqual([]);
+      expect(commit.mock.calls).toEqual([]);
+      expect(dispatch.mock.calls).toEqual([['get']]);
+    });
+  });
+
+  describe('#update', () => {
+    it('sends correct actions', async () => {
+      const user = {
+        email: 'thoma@sphadikam.com',
+        name: 'Adu Thoma',
+        avatar_url: '',
+        identifier_hash: 'random_hex_identifier_hash',
+      };
+      API.patch.mockResolvedValue({ data: { id: 1 } });
+      await actions.update({ commit, dispatch }, { identifier: 1, user });
+      expect(commit.mock.calls).toEqual([]);
+      expect(dispatch.mock.calls).toEqual([['get']]);
+    });
   });
 });