Repository: shlinkio/shlink-web-client (ts)

Issue:
Improve orphan visits stats
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#### Summary

Improve new orphan visits stats section, implemented in https://github.com/shlinkio/shlink-web-client/pull/394, to include:

- [x] Display visited URL column in visits table.
- [x] Create a new "by context" chart to group by visited URL.
- [x] Allow filtering by type.


Pull request description:
Feature/orphan visits improvements
Closes #395 

Patch:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a924e1c3..593162a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 * [#385](https://github.com/shlinkio/shlink-web-client/issues/385) Added setting to determine if "validate URL" should be enabled or disabled by default.
 * [#386](https://github.com/shlinkio/shlink-web-client/issues/386) Added new card in overview section to display amount of orphan visits when using Shlink 2.6.0 or higher.
 * [#177](https://github.com/shlinkio/shlink-web-client/issues/177) Added dark theme.
-* [#387](https://github.com/shlinkio/shlink-web-client/issues/387) Added a section to see orphan visits stats, when consuming Shlink >=2.6.0.
+* [#387](https://github.com/shlinkio/shlink-web-client/issues/387) and [#395](https://github.com/shlinkio/shlink-web-client/issues/395) Added a section to see orphan visits stats, when consuming Shlink >=2.6.0.
 * [#383](https://github.com/shlinkio/shlink-web-client/issues/383) Added title to short URLs list, displayed when consuming Shlink >=2.6.0.
 * [#368](https://github.com/shlinkio/shlink-web-client/issues/368) Added new settings to define the default interval for visits pages.
 * [#349](https://github.com/shlinkio/shlink-web-client/issues/349) Added support to export visits to CSV.
diff --git a/src/utils/DropdownBtn.tsx b/src/utils/DropdownBtn.tsx
index d1cf6f6b..b658c218 100644
--- a/src/utils/DropdownBtn.tsx
+++ b/src/utils/DropdownBtn.tsx
@@ -7,16 +7,20 @@ export interface DropdownBtnProps {
   text: string;
   disabled?: boolean;
   className?: string;
+  dropdownClassName?: string;
+  right?: boolean;
 }
 
-export const DropdownBtn: FC<DropdownBtnProps> = ({ text, disabled = false, className = '', children }) => {
+export const DropdownBtn: FC<DropdownBtnProps> = (
+  { text, disabled = false, className = '', children, dropdownClassName, right = false },
+) => {
   const [ isOpen, toggle ] = useToggle();
   const toggleClasses = `dropdown-btn__toggle btn-block ${className}`;
 
   return (
-    <Dropdown isOpen={isOpen} toggle={toggle} disabled={disabled}>
+    <Dropdown isOpen={isOpen} toggle={toggle} disabled={disabled} className={dropdownClassName}>
       <DropdownToggle caret className={toggleClasses} color="primary">{text}</DropdownToggle>
-      <DropdownMenu className="w-100">{children}</DropdownMenu>
+      <DropdownMenu className="w-100" right={right}>{children}</DropdownMenu>
     </Dropdown>
   );
 };
diff --git a/src/visits/OrphanVisits.tsx b/src/visits/OrphanVisits.tsx
index 54197a83..b79cfad8 100644
--- a/src/visits/OrphanVisits.tsx
+++ b/src/visits/OrphanVisits.tsx
@@ -33,6 +33,7 @@ export const OrphanVisits = ({ exportVisits }: VisitsExporter) => boundToMercure
       baseUrl={url}
       settings={settings}
       exportCsv={exportCsv}
+      isOrphanVisits
     >
       <OrphanVisitsHeader orphanVisits={orphanVisits} goBack={goBack} />
     </VisitsStats>
diff --git a/src/visits/VisitsStats.tsx b/src/visits/VisitsStats.tsx
index 09271d2d..d94d14bb 100644
--- a/src/visits/VisitsStats.tsx
+++ b/src/visits/VisitsStats.tsx
@@ -6,6 +6,7 @@ import { faCalendarAlt, faMapMarkedAlt, faList, faChartPie, faFileDownload } fro
 import { IconDefinition } from '@fortawesome/fontawesome-common-types';
 import { Route, Switch, NavLink as RouterNavLink, Redirect } from 'react-router-dom';
 import { Location } from 'history';
+import classNames from 'classnames';
 import { DateRangeSelector } from '../utils/dates/DateRangeSelector';
 import Message from '../utils/Message';
 import { formatIsoDate } from '../utils/helpers/date';
@@ -18,10 +19,12 @@ import SortableBarGraph from './helpers/SortableBarGraph';
 import GraphCard from './helpers/GraphCard';
 import LineChartCard from './helpers/LineChartCard';
 import VisitsTable from './VisitsTable';
-import { NormalizedVisit, Stats, VisitsInfo } from './types';
+import { NormalizedOrphanVisit, NormalizedVisit, OrphanVisitType, VisitsInfo } from './types';
 import OpenMapModalBtn from './helpers/OpenMapModalBtn';
-import { normalizeVisits, processStatsFromVisits } from './services/VisitsParser';
+import { processStatsFromVisits } from './services/VisitsParser';
+import { OrphanVisitTypeDropdown } from './helpers/OrphanVisitTypeDropdown';
 import './VisitsStats.scss';
+import { HighlightableProps, highlightedVisitsToStats, normalizeAndFilterVisits } from './types/helpers';
 
 export interface VisitsStatsProps {
   getVisits: (params: Partial<ShlinkVisitsParams>) => void;
@@ -31,6 +34,7 @@ export interface VisitsStatsProps {
   baseUrl: string;
   domain?: string;
   exportCsv: (visits: NormalizedVisit[]) => void;
+  isOrphanVisits?: boolean;
 }
 
 interface VisitsNavLinkProps {
@@ -39,7 +43,6 @@ interface VisitsNavLinkProps {
   icon: IconDefinition;
 }
 
-type HighlightableProps = 'referer' | 'country' | 'city';
 type Section = 'byTime' | 'byContext' | 'byLocation' | 'list';
 
 const sections: Record<Section, VisitsNavLinkProps> = {
@@ -49,18 +52,6 @@ const sections: Record<Section, VisitsNavLinkProps> = {
   list: { title: 'List', subPath: '/list', icon: faList },
 };
 
-const highlightedVisitsToStats = (
-  highlightedVisits: NormalizedVisit[],
-  prop: HighlightableProps,
-): Stats => highlightedVisits.reduce<Stats>((acc, highlightedVisit) => {
-  if (!acc[highlightedVisit[prop]]) {
-    acc[highlightedVisit[prop]] = 0;
-  }
-
-  acc[highlightedVisit[prop]] += 1;
-
-  return acc;
-}, {});
 let selectedBar: string | undefined;
 
 const VisitsNavLink: FC<VisitsNavLinkProps & { to: string }> = ({ subPath, title, icon, to }) => (
@@ -77,12 +68,13 @@ const VisitsNavLink: FC<VisitsNavLinkProps & { to: string }> = ({ subPath, title
 );
 
 const VisitsStats: FC<VisitsStatsProps> = (
-  { children, visitsInfo, getVisits, cancelGetVisits, baseUrl, domain, settings, exportCsv },
+  { children, visitsInfo, getVisits, cancelGetVisits, baseUrl, domain, settings, exportCsv, isOrphanVisits = false },
 ) => {
   const initialInterval: DateInterval = settings.visits?.defaultInterval ?? 'last30Days';
   const [ dateRange, setDateRange ] = useState<DateRange>(intervalToDateRange(initialInterval));
   const [ highlightedVisits, setHighlightedVisits ] = useState<NormalizedVisit[]>([]);
   const [ highlightedLabel, setHighlightedLabel ] = useState<string | undefined>();
+  const [ orphanVisitType, setOrphanVisitType ] = useState<OrphanVisitType | undefined>();
 
   const buildSectionUrl = (subPath?: string) => {
     const query = domain ? `?domain=${domain}` : '';
@@ -90,8 +82,11 @@ const VisitsStats: FC<VisitsStatsProps> = (
     return !subPath ? `${baseUrl}${query}` : `${baseUrl}${subPath}${query}`;
   };
   const { visits, loading, loadingLarge, error, errorData, progress } = visitsInfo;
-  const normalizedVisits = useMemo(() => normalizeVisits(visits), [ visits ]);
-  const { os, browsers, referrers, countries, cities, citiesForMap } = useMemo(
+  const normalizedVisits = useMemo(
+    () => normalizeAndFilterVisits(visits, orphanVisitType),
+    [ visits, orphanVisitType ],
+  );
+  const { os, browsers, referrers, countries, cities, citiesForMap, visitedUrls } = useMemo(
     () => processStatsFromVisits(normalizedVisits),
     [ normalizedVisits ],
   );
@@ -101,7 +96,7 @@ const VisitsStats: FC<VisitsStatsProps> = (
     selectedBar = undefined;
     setHighlightedVisits(selectedVisits);
   };
-  const highlightVisitsForProp = (prop: HighlightableProps) => (value: string) => {
+  const highlightVisitsForProp = (prop: HighlightableProps<NormalizedOrphanVisit>) => (value: string) => {
     const newSelectedBar = `${prop}_${value}`;
 
     if (selectedBar === newSelectedBar) {
@@ -109,7 +104,7 @@ const VisitsStats: FC<VisitsStatsProps> = (
       setHighlightedLabel(undefined);
       selectedBar = undefined;
     } else {
-      setHighlightedVisits(normalizedVisits.filter(propEq(prop, value)));
+      setHighlightedVisits((normalizedVisits as NormalizedOrphanVisit[]).filter(propEq(prop, value)));
       setHighlightedLabel(value);
       selectedBar = newSelectedBar;
     }
@@ -171,13 +166,13 @@ const VisitsStats: FC<VisitsStatsProps> = (
             </Route>
 
             <Route exact path={`${baseUrl}${sections.byContext.subPath}`}>
-              <div className="col-xl-4 col-lg-6 mt-4">
+              <div className={classNames('mt-4 col-lg-6', { 'col-xl-4': !isOrphanVisits })}>
                 <GraphCard title="Operating systems" stats={os} />
               </div>
-              <div className="col-xl-4 col-lg-6 mt-4">
+              <div className={classNames('mt-4 col-lg-6', { 'col-xl-4': !isOrphanVisits })}>
                 <GraphCard title="Browsers" stats={browsers} />
               </div>
-              <div className="col-xl-4 mt-4">
+              <div className={classNames('mt-4', { 'col-xl-4': !isOrphanVisits, 'col-lg-6': isOrphanVisits })}>
                 <SortableBarGraph
                   title="Referrers"
                   stats={referrers}
@@ -191,6 +186,21 @@ const VisitsStats: FC<VisitsStatsProps> = (
                   onClick={highlightVisitsForProp('referer')}
                 />
               </div>
+              {isOrphanVisits && (
+                <div className="mt-4 col-lg-6">
+                  <SortableBarGraph
+                    title="Visited URLs"
+                    stats={visitedUrls}
+                    highlightedLabel={highlightedLabel}
+                    highlightedStats={highlightedVisitsToStats(highlightedVisits, 'visitedUrl')}
+                    sortingItems={{
+                      visitedUrl: 'Visited URL',
+                      amount: 'Visits amount',
+                    }}
+                    onClick={highlightVisitsForProp('visitedUrl')}
+                  />
+                </div>
+              )}
             </Route>
 
             <Route exact path={`${baseUrl}${sections.byLocation.subPath}`}>
@@ -232,6 +242,7 @@ const VisitsStats: FC<VisitsStatsProps> = (
                   visits={normalizedVisits}
                   selectedVisits={highlightedVisits}
                   setSelectedVisits={setSelectedVisits}
+                  isOrphanVisits={isOrphanVisits}
                 />
               </div>
             </Route>
@@ -250,12 +261,24 @@ const VisitsStats: FC<VisitsStatsProps> = (
       <section className="mt-4">
         <div className="row flex-md-row-reverse">
           <div className="col-lg-7 col-xl-6">
-            <DateRangeSelector
-              disabled={loading}
-              initialDateRange={initialInterval}
-              defaultText="All visits"
-              onDatesChange={setDateRange}
-            />
+            <div className="d-md-flex">
+              <div className="flex-fill">
+                <DateRangeSelector
+                  disabled={loading}
+                  initialDateRange={initialInterval}
+                  defaultText="All visits"
+                  onDatesChange={setDateRange}
+                />
+              </div>
+              {isOrphanVisits && (
+                <OrphanVisitTypeDropdown
+                  text="Filter by type"
+                  className="ml-0 ml-md-2 mt-4 mt-md-0"
+                  selected={orphanVisitType}
+                  onChange={setOrphanVisitType}
+                />
+              )}
+            </div>
           </div>
           {visits.length > 0 && (
             <div className="col-lg-5 col-xl-6 mt-4 mt-lg-0">
diff --git a/src/visits/VisitsTable.tsx b/src/visits/VisitsTable.tsx
index fb99a950..9eb0eef2 100644
--- a/src/visits/VisitsTable.tsx
+++ b/src/visits/VisitsTable.tsx
@@ -12,7 +12,7 @@ import SimplePaginator from '../common/SimplePaginator';
 import SearchField from '../utils/SearchField';
 import { determineOrderDir, OrderDir } from '../utils/utils';
 import { prettify } from '../utils/helpers/numbers';
-import { NormalizedVisit } from './types';
+import { NormalizedOrphanVisit, NormalizedVisit } from './types';
 import './VisitsTable.scss';
 
 interface VisitsTableProps {
@@ -20,9 +20,10 @@ interface VisitsTableProps {
   selectedVisits?: NormalizedVisit[];
   setSelectedVisits: (visits: NormalizedVisit[]) => void;
   matchMedia?: (query: string) => MediaQueryList;
+  isOrphanVisits?: boolean;
 }
 
-type OrderableFields = 'date' | 'country' | 'city' | 'browser' | 'os' | 'referer';
+type OrderableFields = 'date' | 'country' | 'city' | 'browser' | 'os' | 'referer' | 'visitedUrl';
 
 interface Order {
   field?: OrderableFields;
@@ -30,8 +31,10 @@ interface Order {
 }
 
 const PAGE_SIZE = 20;
-const visitMatchesSearch = ({ browser, os, referer, country, city }: NormalizedVisit, searchTerm: string) =>
-  `${browser} ${os} ${referer} ${country} ${city}`.toLowerCase().includes(searchTerm.toLowerCase());
+const visitMatchesSearch = ({ browser, os, referer, country, city, ...rest }: NormalizedVisit, searchTerm: string) =>
+  `${browser} ${os} ${referer} ${country} ${city} ${(rest as NormalizedOrphanVisit).visitedUrl}`.toLowerCase().includes(
+    searchTerm.toLowerCase(),
+  );
 const searchVisits = (searchTerm: string, visits: NormalizedVisit[]) =>
   visits.filter((visit) => visitMatchesSearch(visit, searchTerm));
 const sortVisits = ({ field, dir }: Order, visits: NormalizedVisit[]) => !field || !dir ? visits : visits.sort(
@@ -39,7 +42,7 @@ const sortVisits = ({ field, dir }: Order, visits: NormalizedVisit[]) => !field
     const greaterThan = dir === 'ASC' ? 1 : -1;
     const smallerThan = dir === 'ASC' ? -1 : 1;
 
-    return a[field] > b[field] ? greaterThan : smallerThan;
+    return (a as NormalizedOrphanVisit)[field] > (b as NormalizedOrphanVisit)[field] ? greaterThan : smallerThan;
   },
 );
 const calculateVisits = (allVisits: NormalizedVisit[], searchTerm: string | undefined, order: Order) => {
@@ -56,6 +59,7 @@ const VisitsTable = ({
   selectedVisits = [],
   setSelectedVisits,
   matchMedia = window.matchMedia,
+  isOrphanVisits = false,
 }: VisitsTableProps) => {
   const headerCellsClass = 'visits-table__header-cell visits-table__sticky';
   const matchMobile = () => matchMedia('(max-width: 767px)').matches;
@@ -89,11 +93,8 @@ const VisitsTable = ({
   useEffect(() => {
     setPage(1);
 
-    if (isFirstLoad.current) {
-      isFirstLoad.current = false;
-    } else {
-      setSelectedVisits([]);
-    }
+    !isFirstLoad.current && setSelectedVisits([]);
+    isFirstLoad.current = false;
   }, [ searchTerm ]);
 
   return (
@@ -132,22 +133,28 @@ const VisitsTable = ({
             Referrer
             {renderOrderIcon('referer')}
           </th>
+          {isOrphanVisits && (
+            <th className={headerCellsClass} onClick={orderByColumn('visitedUrl')}>
+              Visited URL
+              {renderOrderIcon('visitedUrl')}
+            </th>
+          )}
         </tr>
         <tr>
-          <td colSpan={7} className="p-0">
+          <td colSpan={isOrphanVisits ? 8 : 7} className="p-0">
             <SearchField noBorder large={false} onChange={setSearchTerm} />
           </td>
         </tr>
       </thead>
       <tbody>
-        {(!resultSet.visitsGroups[page - 1] || resultSet.visitsGroups[page - 1].length === 0) && (
+        {!resultSet.visitsGroups[page - 1]?.length && (
           <tr>
-            <td colSpan={7} className="text-center">
+            <td colSpan={isOrphanVisits ? 8 : 7} className="text-center">
               No visits found with current filtering
             </td>
           </tr>
         )}
-        {resultSet.visitsGroups[page - 1] && resultSet.visitsGroups[page - 1].map((visit, index) => {
+        {resultSet.visitsGroups[page - 1]?.map((visit, index) => {
           const isSelected = selectedVisits.includes(visit);
 
           return (
@@ -170,6 +177,7 @@ const VisitsTable = ({
               <td>{visit.browser}</td>
               <td>{visit.os}</td>
               <td>{visit.referer}</td>
+              {isOrphanVisits && <td>{(visit as NormalizedOrphanVisit).visitedUrl}</td>}
             </tr>
           );
         })}
@@ -177,7 +185,7 @@ const VisitsTable = ({
       {resultSet.total > PAGE_SIZE && (
         <tfoot>
           <tr>
-            <td colSpan={7} className="visits-table__footer-cell visits-table__sticky">
+            <td colSpan={isOrphanVisits ? 8 : 7} className="visits-table__footer-cell visits-table__sticky">
               <div className="row">
                 <div className="col-md-6">
                   <SimplePaginator
diff --git a/src/visits/helpers/LineChartCard.tsx b/src/visits/helpers/LineChartCard.tsx
index 2190b4bf..cb180dca 100644
--- a/src/visits/helpers/LineChartCard.tsx
+++ b/src/visits/helpers/LineChartCard.tsx
@@ -9,7 +9,7 @@ import {
   DropdownItem,
 } from 'reactstrap';
 import { Line } from 'react-chartjs-2';
-import { always, cond, reverse } from 'ramda';
+import { always, cond, countBy, reverse } from 'ramda';
 import moment from 'moment';
 import Chart, { ChartData, ChartDataSets, ChartOptions } from 'chart.js';
 import { NormalizedVisit, Stats } from '../types';
@@ -70,15 +70,9 @@ const determineInitialStep = (oldestVisitDate: string): Step => {
   return matcher() ?? 'monthly';
 };
 
-const groupVisitsByStep = (step: Step, visits: NormalizedVisit[]): Stats => visits.reduce<Stats>(
-  (acc, visit) => {
-    const key = STEP_TO_DATE_FORMAT[step](visit.date);
-
-    acc[key] = (acc[key] || 0) + 1;
-
-    return acc;
-  },
-  {},
+const groupVisitsByStep = (step: Step, visits: NormalizedVisit[]): Stats => countBy(
+  (visit) => STEP_TO_DATE_FORMAT[step](visit.date),
+  visits,
 );
 
 const visitsToDatasetGroups = (step: Step, visits: NormalizedVisit[]) =>
diff --git a/src/visits/helpers/OrphanVisitTypeDropdown.tsx b/src/visits/helpers/OrphanVisitTypeDropdown.tsx
new file mode 100644
index 00000000..61273c14
--- /dev/null
+++ b/src/visits/helpers/OrphanVisitTypeDropdown.tsx
@@ -0,0 +1,26 @@
+import { DropdownItem } from 'reactstrap';
+import { OrphanVisitType } from '../types';
+import { DropdownBtn } from '../../utils/DropdownBtn';
+
+interface OrphanVisitTypeDropdownProps {
+  onChange: (type: OrphanVisitType | undefined) => void;
+  selected?: OrphanVisitType | undefined;
+  className?: string;
+  text: string;
+}
+
+export const OrphanVisitTypeDropdown = ({ onChange, selected, text, className }: OrphanVisitTypeDropdownProps) => (
+  <DropdownBtn text={text} dropdownClassName={className} className="mr-3" right>
+    <DropdownItem active={selected === 'base_url'} onClick={() => onChange('base_url')}>
+      Base URL
+    </DropdownItem>
+    <DropdownItem active={selected === 'invalid_short_url'} onClick={() => onChange('invalid_short_url')}>
+      Invalid short URL
+    </DropdownItem>
+    <DropdownItem active={selected === 'regular_404'} onClick={() => onChange('regular_404')}>
+      Regular 404
+    </DropdownItem>
+    <DropdownItem divider />
+    <DropdownItem onClick={() => onChange(undefined)}><i>Clear selection</i></DropdownItem>
+  </DropdownBtn>
+);
diff --git a/src/visits/services/VisitsParser.ts b/src/visits/services/VisitsParser.ts
index 824fb796..9cef1faa 100644
--- a/src/visits/services/VisitsParser.ts
+++ b/src/visits/services/VisitsParser.ts
@@ -2,7 +2,7 @@ import { isNil, map } from 'ramda';
 import { extractDomain, parseUserAgent } from '../../utils/helpers/visits';
 import { hasValue } from '../../utils/utils';
 import { CityStats, NormalizedVisit, Stats, Visit, VisitsStats } from '../types';
-import { isOrphanVisit } from '../types/helpers';
+import { isNormalizedOrphanVisit, isOrphanVisit } from '../types/helpers';
 
 const visitHasProperty = (visit: NormalizedVisit, propertyName: keyof NormalizedVisit) =>
   !isNil(visit) && hasValue(visit[propertyName]);
@@ -54,6 +54,16 @@ const updateCitiesForMapForVisit = (citiesForMapStats: Record<string, CityStats>
   citiesForMapStats[city] = currentCity;
 };
 
+const updateVisitedUrlsForVisit = (visitedUrlsStats: Stats, visit: NormalizedVisit) => {
+  if (!isNormalizedOrphanVisit(visit)) {
+    return;
+  }
+
+  const { visitedUrl } = visit;
+
+  visitedUrlsStats[visitedUrl] = (visitedUrlsStats[visitedUrl] || 0) + 1;
+};
+
 export const processStatsFromVisits = (visits: NormalizedVisit[]) => visits.reduce(
   (stats: VisitsStats, visit: NormalizedVisit) => {
     // We mutate the original object because it has a big performance impact when large data sets are processed
@@ -63,10 +73,11 @@ export const processStatsFromVisits = (visits: NormalizedVisit[]) => visits.redu
     updateCountriesStatsForVisit(stats.countries, visit);
     updateCitiesStatsForVisit(stats.cities, visit);
     updateCitiesForMapForVisit(stats.citiesForMap, visit);
+    updateVisitedUrlsForVisit(stats.visitedUrls, visit);
 
     return stats;
   },
-  { os: {}, browsers: {}, referrers: {}, countries: {}, cities: {}, citiesForMap: {} },
+  { os: {}, browsers: {}, referrers: {}, countries: {}, cities: {}, citiesForMap: {}, visitedUrls: {} },
 );
 
 export const normalizeVisits = map((visit: Visit): NormalizedVisit => {
diff --git a/src/visits/types/helpers.ts b/src/visits/types/helpers.ts
index fdc45733..d2691504 100644
--- a/src/visits/types/helpers.ts
+++ b/src/visits/types/helpers.ts
@@ -1,8 +1,20 @@
-import { groupBy, pipe } from 'ramda';
-import { Visit, OrphanVisit, CreateVisit } from './index';
+import { countBy, filter, groupBy, pipe, prop } from 'ramda';
+import { normalizeVisits } from '../services/VisitsParser';
+import {
+  Visit,
+  OrphanVisit,
+  CreateVisit,
+  NormalizedVisit,
+  NormalizedOrphanVisit,
+  Stats,
+  OrphanVisitType,
+} from './index';
 
 export const isOrphanVisit = (visit: Visit): visit is OrphanVisit => visit.hasOwnProperty('visitedUrl');
 
+export const isNormalizedOrphanVisit = (visit: NormalizedVisit): visit is NormalizedOrphanVisit =>
+  visit.hasOwnProperty('visitedUrl');
+
 export interface GroupedNewVisits {
   orphanVisits: CreateVisit[];
   regularVisits: CreateVisit[];
@@ -13,3 +25,17 @@ export const groupNewVisitsByType = pipe(
   // @ts-expect-error Type declaration on groupBy is not correct. It can return undefined props
   (result): GroupedNewVisits => ({ orphanVisits: [], regularVisits: [], ...result }),
 );
+
+export type HighlightableProps<T extends NormalizedVisit> = T extends NormalizedOrphanVisit
+  ? ('referer' | 'country' | 'city' | 'visitedUrl')
+  : ('referer' | 'country' | 'city');
+
+export const highlightedVisitsToStats = <T extends NormalizedVisit>(
+  highlightedVisits: T[],
+  property: HighlightableProps<T>,
+): Stats => countBy(prop(property) as any, highlightedVisits);
+
+export const normalizeAndFilterVisits = (visits: Visit[], type: OrphanVisitType | undefined) => pipe(
+  normalizeVisits,
+  filter((normalizedVisit) => type === undefined || (normalizedVisit as NormalizedOrphanVisit).type === type),
+)(visits);
diff --git a/src/visits/types/index.ts b/src/visits/types/index.ts
index 813a8767..0e2879d5 100644
--- a/src/visits/types/index.ts
+++ b/src/visits/types/index.ts
@@ -20,7 +20,7 @@ export interface VisitsLoadFailedAction extends Action<string> {
   errorData?: ProblemDetailsError;
 }
 
-type OrphanVisitType = 'base_url' | 'invalid_short_url' | 'regular_404';
+export type OrphanVisitType = 'base_url' | 'invalid_short_url' | 'regular_404';
 
 interface VisitLocation {
   countryCode: string | null;
@@ -90,4 +90,5 @@ export interface VisitsStats {
   countries: Stats;
   cities: Stats;
   citiesForMap: Record<string, CityStats>;
+  visitedUrls: Stats;
 }


Test patch:
diff --git a/test/visits/VisitsTable.test.tsx b/test/visits/VisitsTable.test.tsx
index a2d01c4a..393ab64d 100644
--- a/test/visits/VisitsTable.test.tsx
+++ b/test/visits/VisitsTable.test.tsx
@@ -10,13 +10,14 @@ describe('<VisitsTable />', () => {
   const matchMedia = () => Mock.of<MediaQueryList>({ matches: false });
   const setSelectedVisits = jest.fn();
   let wrapper: ShallowWrapper;
-  const createWrapper = (visits: NormalizedVisit[], selectedVisits: NormalizedVisit[] = []) => {
+  const createWrapper = (visits: NormalizedVisit[], selectedVisits: NormalizedVisit[] = [], isOrphanVisits = false) => {
     wrapper = shallow(
       <VisitsTable
         visits={visits}
         selectedVisits={selectedVisits}
         setSelectedVisits={setSelectedVisits}
         matchMedia={matchMedia}
+        isOrphanVisits={isOrphanVisits}
       />,
     );
 
@@ -134,4 +135,17 @@ describe('<VisitsTable />', () => {
     searchField.simulate('change', '');
     expect(wrapper.find('tbody').find('tr')).toHaveLength(7 + 2);
   });
+
+  it.each([
+    [ true, 8 ],
+    [ false, 7 ],
+  ])('displays proper amount of columns for orphan and non-orphan visits', (isOrphanVisits, expectedCols) => {
+    const wrapper = createWrapper([], [], isOrphanVisits);
+    const rowsWithColspan = wrapper.find('[colSpan]');
+    const cols = wrapper.find('th');
+
+    expect(cols).toHaveLength(expectedCols);
+    expect(rowsWithColspan).toHaveLength(2);
+    rowsWithColspan.forEach((row) => expect(row.prop('colSpan')).toEqual(expectedCols));
+  });
 });
diff --git a/test/visits/helpers/OrphanVisitTypeDropdown.test.tsx b/test/visits/helpers/OrphanVisitTypeDropdown.test.tsx
new file mode 100644
index 00000000..c41b340a
--- /dev/null
+++ b/test/visits/helpers/OrphanVisitTypeDropdown.test.tsx
@@ -0,0 +1,56 @@
+import { shallow, ShallowWrapper } from 'enzyme';
+import { DropdownItem } from 'reactstrap';
+import { OrphanVisitType } from '../../../src/visits/types';
+import { OrphanVisitTypeDropdown } from '../../../src/visits/helpers/OrphanVisitTypeDropdown';
+
+describe('<OrphanVisitTypeDropdown />', () => {
+  let wrapper: ShallowWrapper;
+  const onChange = jest.fn();
+  const createWrapper = (selected?: OrphanVisitType) => {
+    wrapper = shallow(<OrphanVisitTypeDropdown text="The text" selected={selected} onChange={onChange} />);
+
+    return wrapper;
+  };
+
+  beforeEach(jest.clearAllMocks);
+  afterEach(() => wrapper?.unmount());
+
+  it('has provided text', () => {
+    const wrapper = createWrapper();
+
+    expect(wrapper.prop('text')).toEqual('The text');
+  });
+
+  it.each([
+    [ 'base_url' as OrphanVisitType, 0, 1 ],
+    [ 'invalid_short_url' as OrphanVisitType, 1, 1 ],
+    [ 'regular_404' as OrphanVisitType, 2, 1 ],
+    [ undefined, -1, 0 ],
+  ])('sets expected item as active', (selected, expectedSelectedIndex, expectedActiveItems) => {
+    const wrapper = createWrapper(selected);
+    const items = wrapper.find(DropdownItem);
+    const activeItem = items.filterWhere((item) => !!item.prop('active'));
+
+    expect.assertions(expectedActiveItems + 1);
+    expect(activeItem).toHaveLength(expectedActiveItems);
+    items.forEach((item, index) => {
+      if (item.prop('active')) {
+        expect(index).toEqual(expectedSelectedIndex);
+      }
+    });
+  });
+
+  it.each([
+    [ 0, 'base_url' ],
+    [ 1, 'invalid_short_url' ],
+    [ 2, 'regular_404' ],
+    [ 4, undefined ],
+  ])('invokes onChange with proper type when an item is clicked', (index, expectedType) => {
+    const wrapper = createWrapper();
+    const itemToClick = wrapper.find(DropdownItem).at(index);
+
+    itemToClick.simulate('click');
+
+    expect(onChange).toHaveBeenCalledWith(expectedType);
+  });
+});
diff --git a/test/visits/services/VisitsParser.test.ts b/test/visits/services/VisitsParser.test.ts
index 96936f44..7edafab8 100644
--- a/test/visits/services/VisitsParser.test.ts
+++ b/test/visits/services/VisitsParser.test.ts
@@ -64,7 +64,7 @@ describe('VisitsParser', () => {
     }),
     Mock.of<OrphanVisit>({
       type: 'invalid_short_url',
-      visitedUrl: 'baz',
+      visitedUrl: 'bar',
       userAgent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36',
       referer: 'https://m.facebook.com',
       visitLocation: {
@@ -153,6 +153,15 @@ describe('VisitsParser', () => {
         },
       });
     });
+
+    it('properly parses visited URL stats', () => {
+      const { visitedUrls } = processStatsFromVisits(normalizeVisits(orphanVisits));
+
+      expect(visitedUrls).toEqual({
+        foo: 1,
+        bar: 2,
+      });
+    });
   });
 
   describe('normalizeVisits', () => {
@@ -247,7 +256,7 @@ describe('VisitsParser', () => {
           latitude: 123.45,
           longitude: -543.21,
           type: 'invalid_short_url',
-          visitedUrl: 'baz',
+          visitedUrl: 'bar',
         },
       ]);
     });