Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/javascript/dashboard/components/widgets/conversation/helpers/emailHeadHelper.js

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+import { email as emailValidator } from '@vuelidate/validators';
+
+export const validEmailsByComma = value => {
+  if (!value.length) return true;
+  const emails = value.replace(/\s+/g, '').split(',');
+  return emails.every(email => emailValidator.$validator(email));
+};

research/chatwoot/app/javascript/dashboard/components/widgets/conversation/helpers/scrollTopCalculationHelper.js

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+const totalMessageHeight = (total, element) => {
+  return total + element.scrollHeight;
+};
+
+export const calculateScrollTop = (
+  conversationPanelHeight,
+  parentHeight,
+  relevantMessages
+) => {
+  // add up scrollHeight of a `relevantMessages`
+  let combinedMessageScrollHeight = [...relevantMessages].reduce(
+    totalMessageHeight,
+    0
+  );
+  return (
+    conversationPanelHeight - combinedMessageScrollHeight - parentHeight / 2
+  );
+};

research/chatwoot/app/javascript/dashboard/components/widgets/conversation/helpers/specs/emailHeadHelper.spec.js

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+import { validEmailsByComma } from '../emailHeadHelper';
+
+describe('#validEmailsByComma', () => {
+  it('returns true when empty string is passed', () => {
+    expect(validEmailsByComma('')).toEqual(true);
+  });
+  it('returns true when valid emails separated by comma is passed', () => {
+    expect(validEmailsByComma('ni@njan.com,po@va.da')).toEqual(true);
+  });
+  it('returns false when one of the email passed is invalid', () => {
+    expect(validEmailsByComma('ni@njan.com,pova.da')).toEqual(false);
+  });
+  it('strips spaces between emails before validating', () => {
+    expect(validEmailsByComma('1@test.com  , 2@test.com')).toEqual(true);
+  });
+});

research/chatwoot/app/javascript/dashboard/components/widgets/conversation/helpers/specs/scrollTopCalculationHelper.spec.js

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+import { calculateScrollTop } from '../scrollTopCalculationHelper';
+
+describe('#calculateScrollTop', () => {
+  it('returns calculated value of the scrollTop property', () => {
+    class DOMElement {
+      constructor(scrollHeight) {
+        this.scrollHeight = scrollHeight;
+      }
+    }
+    let count = 3;
+    let relevantMessages = [];
+    while (count > 0) {
+      relevantMessages.push(new DOMElement(100));
+      count -= 1;
+    }
+    expect(calculateScrollTop(1000, 300, relevantMessages)).toEqual(550);
+  });
+});