Remove Rails API related code

Removs frontend code which was used for Rails API for
fetching Epics as now we use GraphQL.

ee/app/assets/javascripts/roadmap/components/epics_list_section.vue

@@ -141,7 +141,7 @@ export default {
     },
     getEpicItemProps(index) {
       return {
-        key: index,
+        key: generateKey(this.displayedEpics[index]),
         props: {
           epic: this.displayedEpics[index],
           presetType: this.presetType,

ee/app/assets/javascripts/roadmap/roadmap_bundle.js

@@ -15,7 +15,7 @@ import { visitUrl, mergeUrlParams } from '~/lib/utils/url_utility';
 
 import { PRESET_TYPES, EPIC_DETAILS_CELL_WIDTH } from './constants';
 
-import { getEpicsPathForPreset, getTimeframeForPreset } from './utils/roadmap_utils';
+import { getTimeframeForPreset } from './utils/roadmap_utils';
 
 import createStore from './store';
 
@@ -57,9 +57,8 @@ export default () => {
         supportedPresetTypes.indexOf(dataset.presetType) > -1
           ? dataset.presetType
           : PRESET_TYPES.MONTHS;
-      const filterQueryString = window.location.search.substring(1);
       const filterParams = Object.assign(
-        convertObjectPropsToCamelCase(urlParamsToObject(filterQueryString), {
+        convertObjectPropsToCamelCase(urlParamsToObject(window.location.search.substring(1)), {
           dropKeys: ['scope', 'utf8', 'state', 'sort', 'layout'], // These keys are unsupported/unnecessary
         }),
       );
@@ -67,13 +66,6 @@ export default () => {
         presetType,
         window.innerWidth - el.offsetLeft - EPIC_DETAILS_CELL_WIDTH,
       );
-      const initialEpicsPath = getEpicsPathForPreset({
-        basePath: dataset.epicsPath,
-        epicsState: dataset.epicsState,
-        filterQueryString,
-        presetType,
-        timeframe,
-      });
 
       return {
         emptyStateIllustrationPath: dataset.emptyStateIllustration,
@@ -90,8 +82,6 @@ export default () => {
         groupMilestonesEndpoint: dataset.groupMilestonesEndpoint,
         epicsState: dataset.epicsState,
         sortedBy: dataset.sortedBy,
-        filterQueryString,
-        initialEpicsPath,
         filterParams,
         presetType,
         timeframe,
@@ -107,9 +97,7 @@ export default () => {
         epicsState: this.epicsState,
         timeframe: this.timeframe,
         basePath: this.basePath,
-        filterQueryString: this.filterQueryString,
         filterParams: this.filterParams,
-        initialEpicsPath: this.initialEpicsPath,
         groupLabelsEndpoint: this.groupLabelsEndpoint,
         groupMilestonesEndpoint: this.groupMilestonesEndpoint,
         defaultInnerHeight: this.defaultInnerHeight,

ee/app/assets/javascripts/roadmap/store/state.js

@@ -2,8 +2,6 @@ export default () => ({
   // API Calls
   basePath: '',
   epicsState: '',
-  filterQueryString: '',
-  initialEpicsPath: '',
   filterParams: null,
   groupLabelsEndpoint: '',
   groupMilestonesEndpoint: '',

ee/app/assets/javascripts/roadmap/utils/roadmap_utils.js

@@ -406,34 +406,6 @@ export const getEpicsTimeframeRange = ({ presetType = '', timeframe = [] }) => {
   };
 };
 
-export const getEpicsPathForPreset = ({
-  basePath = '',
-  filterQueryString = '',
-  presetType = '',
-  timeframe = [],
-  epicsState = 'all',
-}) => {
-  let epicsPath = basePath;
-
-  if (!basePath || !timeframe.length) {
-    return null;
-  }
-
-  const range = getEpicsTimeframeRange({
-    presetType,
-    timeframe,
-  });
-
-  epicsPath += epicsPath.indexOf('?') === -1 ? '?' : '&';
-  epicsPath += `state=${epicsState}&start_date=${range.startDate}&end_date=${range.dueDate}`;
-
-  if (filterQueryString) {
-    epicsPath += `&${filterQueryString}`;
-  }
-
-  return epicsPath;
-};
-
 /**
  * This function takes two epics and return sortable dates depending on the '
  * type of sorting order -- startDate or endDate.

ee/spec/frontend/roadmap/components/epics_list_section_spec.js

@@ -245,7 +245,7 @@ describe('EpicsListSectionComponent', () => {
       it('returns an object containing props for EpicItem component', () => {
         expect(wrapper.vm.getEpicItemProps(1)).toEqual(
           expect.objectContaining({
-            key: 1,
+            key: `epic-${wrapper.vm.epics[1].id}`,
             props: {
               epic: wrapper.vm.epics[1],
               presetType: wrapper.vm.presetType,

ee/spec/frontend/roadmap/utils/roadmap_utils_spec.js

@@ -7,7 +7,6 @@ import {
   extendTimeframeForWeeksView,
   extendTimeframeForAvailableWidth,
   getEpicsTimeframeRange,
-  getEpicsPathForPreset,
   assignDates,
   sortEpics,
 } from 'ee/roadmap/utils/roadmap_utils';
@@ -345,71 +344,6 @@ describe('getEpicsTimeframeRange', () => {
   });
 });
 
-describe('getEpicsPathForPreset', () => {
-  const basePath = '/groups/gitlab-org/-/epics.json';
-  const filterQueryString = 'scope=all&utf8=✓&state=opened&label_name[]=Bug';
-
-  it('returns epics path string based on provided basePath and timeframe for Quarters', () => {
-    const timeframeQuarters = getTimeframeForQuartersView(new Date(2018, 0, 1));
-    const epicsPath = getEpicsPathForPreset({
-      basePath,
-      timeframe: timeframeQuarters,
-      presetType: PRESET_TYPES.QUARTERS,
-    });
-
-    expect(epicsPath).toBe(`${basePath}?state=all&start_date=2017-7-1&end_date=2019-3-31`);
-  });
-
-  it('returns epics path string based on provided basePath and timeframe for Months', () => {
-    const timeframeMonths = getTimeframeForMonthsView(new Date(2018, 0, 1));
-    const epicsPath = getEpicsPathForPreset({
-      basePath,
-      timeframe: timeframeMonths,
-      presetType: PRESET_TYPES.MONTHS,
-    });
-
-    expect(epicsPath).toBe(`${basePath}?state=all&start_date=2017-11-1&end_date=2018-6-30`);
-  });
-
-  it('returns epics path string based on provided basePath and timeframe for Weeks', () => {
-    const timeframeWeeks = getTimeframeForWeeksView(new Date(2018, 0, 1));
-    const epicsPath = getEpicsPathForPreset({
-      basePath,
-      timeframe: timeframeWeeks,
-      presetType: PRESET_TYPES.WEEKS,
-    });
-
-    expect(epicsPath).toBe(`${basePath}?state=all&start_date=2017-12-17&end_date=2018-2-3`);
-  });
-
-  it('returns epics path string while preserving filterQueryString', () => {
-    const timeframeMonths = getTimeframeForMonthsView(new Date(2018, 0, 1));
-    const epicsPath = getEpicsPathForPreset({
-      basePath,
-      filterQueryString,
-      timeframe: timeframeMonths,
-      presetType: PRESET_TYPES.MONTHS,
-    });
-
-    expect(epicsPath).toBe(
-      `${basePath}?state=all&start_date=2017-11-1&end_date=2018-6-30&scope=all&utf8=✓&state=opened&label_name[]=Bug`,
-    );
-  });
-
-  it('returns epics path string containing epicsState', () => {
-    const epicsState = 'opened';
-    const timeframe = getTimeframeForMonthsView(new Date(2018, 0, 1));
-    const epicsPath = getEpicsPathForPreset({
-      presetType: PRESET_TYPES.MONTHS,
-      basePath,
-      timeframe,
-      epicsState,
-    });
-
-    expect(epicsPath).toContain(`state=${epicsState}`);
-  });
-});
-
 describe('sortEpics', () => {
   it('sorts epics list by startDate in ascending order when `sortedBy` param is `start_date_asc`', () => {
     const epics = mockUnsortedEpics.slice();