feat: [VAN-1000] - Set weekly goal through welcome email via query param (#956)

src/course-home/outline-tab/OutlineTab.test.jsx

@@ -2,6 +2,7 @@
  * @jest-environment jsdom
  */
 import React from 'react';
+import { MemoryRouter } from 'react-router-dom';
 import { Factory } from 'rosie';
 import { getConfig } from '@edx/frontend-platform';
 import { sendTrackEvent, sendTrackingLogEvent } from '@edx/frontend-platform/analytics';
@@ -51,9 +52,14 @@ describe('Outline Tab', () => {
     axiosMock.onGet(outlineUrl).reply(200, outlineTabData);
   }
 
-  async function fetchAndRender() {
+  async function fetchAndRender(path = '') {
     await executeThunk(thunks.fetchOutlineTab(courseId), store.dispatch);
-    await act(async () => render(<OutlineTab />, { store }));
+    await act(async () => render(
+      <MemoryRouter initialEntries={[path]}>
+        <OutlineTab />
+      </MemoryRouter>,
+      { store },
+    ));
   }
 
   beforeEach(async () => {
@@ -338,6 +344,27 @@ describe('Outline Tab', () => {
       expect(spy).toHaveBeenCalledTimes(0);
     });
 
+    it('post goal via query param', async () => {
+      setTabData({
+        course_goals: {
+          weekly_learning_goal_enabled: true,
+        },
+      });
+      const spy = jest.spyOn(thunks, 'saveWeeklyLearningGoal');
+      sendTrackEvent.mockClear();
+
+      await fetchAndRender('http://localhost/?weekly_goal=3');
+      expect(spy).toHaveBeenCalledTimes(1);
+      expect(sendTrackEvent).toHaveBeenCalledWith('edx.ui.lms.goal.days-per-week.changed', {
+        org_key: 'edX',
+        courserun_key: courseId,
+        is_staff: false,
+        num_days: 3,
+        reminder_selected: true,
+        triggeredFromEmail: true,
+      });
+    });
+
     describe('weekly learning goal is not set', () => {
       beforeEach(async () => {
         setTabData({

src/course-home/outline-tab/widgets/WeeklyLearningGoalCard.jsx

@@ -1,7 +1,9 @@
-import React, { useState } from 'react';
+import React, { useEffect, useState } from 'react';
+import { useLocation } from 'react-router-dom';
 import PropTypes from 'prop-types';
 
 import { Form, Card, Icon } from '@edx/paragon';
+import { history } from '@edx/frontend-platform';
 import { sendTrackEvent } from '@edx/frontend-platform/analytics';
 import { getAuthenticatedUser } from '@edx/frontend-platform/auth';
 import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
@@ -32,8 +34,9 @@ function WeeklyLearningGoalCard({
   const [daysPerWeekGoal, setDaysPerWeekGoal] = useState(daysPerWeek);
   // eslint-disable-next-line react/prop-types
   const [isGetReminderSelected, setGetReminderSelected] = useState(subscribedToReminders);
+  const location = useLocation();
 
-  function handleSelect(days) {
+  function handleSelect(days, triggeredFromEmail = false) {
     // Set the subscription button if this is the first time selecting a goal
     const selectReminders = daysPerWeekGoal === null ? true : isGetReminderSelected;
     setGetReminderSelected(selectReminders);
@@ -46,6 +49,7 @@ function WeeklyLearningGoalCard({
         is_staff: administrator,
         num_days: days,
         reminder_selected: selectReminders,
+        triggeredFromEmail,
       });
     }
   }
@@ -65,6 +69,21 @@ function WeeklyLearningGoalCard({
     }
   }
 
+  useEffect(() => {
+    const currentParams = new URLSearchParams(location.search);
+    const weeklyGoal = Number(currentParams.get('weekly_goal'));
+    if ([1, 3, 5].includes(weeklyGoal)) {
+      handleSelect(weeklyGoal, true);
+
+      // Deleting the weekly_goal query param as it only needs to be set once
+      // whenever passed in query params.
+      currentParams.delete('weekly_goal');
+      history.replace({
+        search: currentParams.toString(),
+      });
+    }
+  }, [location.search]);
+
   return (
     <Card
       id="courseHome-weeklyLearningGoal"