[React] Currency table (#5858)

* Add basic table for displaying exchange rates

- Needed to extend current <InvenTreeTable> functionality for non-standard API endpoint data

* Add heading

* Add button to reload exchange rates

src/frontend/src/components/nav/PanelGroup.tsx

@@ -131,7 +131,7 @@ export function PanelGroup({
                 }}
               >
                 <Stack spacing="md">
-                  <StylishText size="lg">{panel.label}</StylishText>
+                  <StylishText size="xl">{panel.label}</StylishText>
                   <Divider />
                   {panel.content ?? <PlaceholderPanel />}
                 </Stack>

src/frontend/src/components/tables/InvenTreeTable.tsx

@@ -40,6 +40,7 @@ const defaultPageSize: number = 25;
  * @param customFilters : TableFilter[] - List of custom filters
  * @param customActionGroups : any[] - List of custom action groups
  * @param printingActions : any[] - List of printing actions
+ * @param dataFormatter : (data: any) => any - Callback function to reformat data returned by server (if not in default format)
  * @param rowActions : (record: any) => RowAction[] - Callback function to generate row actions
  * @param onRowClick : (record: any, index: number, event: any) => void - Callback function when a row is clicked
  */
@@ -59,6 +60,7 @@ export type InvenTreeTableProps = {
   customActionGroups?: any[];
   printingActions?: any[];
   idAccessor?: string;
+  dataFormatter?: (data: any) => any;
   rowActions?: (record: any) => RowAction[];
   onRowClick?: (record: any, index: number, event: any) => void;
 };
@@ -356,8 +358,15 @@ export function InvenTreeTable({
               tableProps.noRecordsText ?? t`No records found`
             );
 
-            // Extract returned data (accounting for pagination) and ensure it is a list
-            let results = response.data?.results ?? response.data ?? [];
+            let results = [];
+
+            if (props.dataFormatter) {
+              // Custom data formatter provided
+              results = props.dataFormatter(response.data);
+            } else {
+              // Extract returned data (accounting for pagination) and ensure it is a list
+              results = response.data?.results ?? response.data ?? [];
+            }
 
             if (!Array.isArray(results)) {
               setMissingRecordsText(t`Server returned incorrect data type`);

src/frontend/src/components/tables/settings/CurrencyTable.tsx

@@ -0,0 +1,82 @@
+import { t } from '@lingui/macro';
+import { showNotification } from '@mantine/notifications';
+import { IconReload } from '@tabler/icons-react';
+import { useCallback, useMemo } from 'react';
+
+import { api } from '../../../App';
+import { useTableRefresh } from '../../../hooks/TableRefresh';
+import { ApiPaths, apiUrl } from '../../../states/ApiState';
+import { ActionButton } from '../../buttons/ActionButton';
+import { InvenTreeTable } from '../InvenTreeTable';
+
+/*
+ * Table for displaying available currencies
+ */
+export function CurrencyTable() {
+  const { tableKey, refreshTable } = useTableRefresh('currency');
+
+  const columns = useMemo(() => {
+    return [
+      {
+        accessor: 'currency',
+        title: t`Currency`,
+        switchable: false
+      },
+      {
+        accessor: 'rate',
+        title: t`Rate`,
+        switchable: false
+      }
+    ];
+  }, []);
+
+  const refreshCurrencies = useCallback(() => {
+    api
+      .post(apiUrl(ApiPaths.currency_refresh), {})
+      .then(() => {
+        refreshTable();
+        showNotification({
+          message: t`Exchange rates updated`,
+          color: 'green'
+        });
+      })
+      .catch((error) => {
+        showNotification({
+          title: t`Exchange rate update error`,
+          message: error,
+          color: 'red'
+        });
+      });
+  }, []);
+
+  const tableActions = useMemo(() => {
+    return [
+      <ActionButton
+        onClick={refreshCurrencies}
+        tooltip={t`Refresh currency exchange rates`}
+        icon={<IconReload />}
+      />
+    ];
+  }, []);
+
+  return (
+    <InvenTreeTable
+      url={apiUrl(ApiPaths.currency_list)}
+      tableKey={tableKey}
+      columns={columns}
+      props={{
+        customActionGroups: tableActions,
+        dataFormatter: (data) => {
+          let rates = data?.exchange_rates ?? {};
+
+          return Object.entries(rates).map(([currency, rate]) => {
+            return {
+              currency: currency,
+              rate: rate
+            };
+          });
+        }
+      }}
+    />
+  );
+}

src/frontend/src/pages/Index/Settings/SystemSettings.tsx

@@ -21,10 +21,11 @@ import {
 } from '@tabler/icons-react';
 import { useMemo } from 'react';
 
-import { PlaceholderPill } from '../../../components/items/Placeholder';
+import { StylishText } from '../../../components/items/StylishText';
 import { PanelGroup, PanelType } from '../../../components/nav/PanelGroup';
 import { SettingsHeader } from '../../../components/nav/SettingsHeader';
 import { GlobalSettingList } from '../../../components/settings/SettingList';
+import { CurrencyTable } from '../../../components/tables/settings/CurrencyTable';
 import { CustomUnitsTable } from '../../../components/tables/settings/CustomUnitsTable';
 import { ProjectCodeTable } from '../../../components/tables/settings/ProjectCodeTable';
 import { useServerApiState } from '../../../states/ApiState';
@@ -152,7 +153,9 @@ export default function SystemSettings() {
             <GlobalSettingList
               keys={['CURRENCY_UPDATE_PLUGIN', 'CURRENCY_UPDATE_INTERVAL']}
             />
-            <PlaceholderPill />
+            <StylishText size="xl">{t`Exchange Rates`}</StylishText>
+            <Divider />
+            <CurrencyTable />
           </>
         )
       },

src/frontend/src/states/ApiState.tsx

@@ -71,6 +71,9 @@ export enum ApiPaths {
   settings_user_list = 'api-settings-user-list',
   notifications_list = 'api-notifications-list',
 
+  currency_list = 'api-currency-list',
+  currency_refresh = 'api-currency-refresh',
+
   barcode = 'api-barcode',
   news = 'news',
   global_status = 'api-global-status',
@@ -165,6 +168,10 @@ export function apiEndpoint(path: ApiPaths): string {
       return 'auth/emails/$id/verify/';
     case ApiPaths.user_email_primary:
       return 'auth/emails/$id/primary/';
+    case ApiPaths.currency_list:
+      return 'currency/exchange/';
+    case ApiPaths.currency_refresh:
+      return 'currency/refresh/';
     case ApiPaths.api_search:
       return 'search/';
     case ApiPaths.settings_global_list: