From 59fb60283b3c51b683aa77fa7fbfc81ea149015a Mon Sep 17 00:00:00 2001
From: Hailong Cui <ihailong@amazon.com>
Date: Sun, 21 Jul 2024 13:59:05 +0800
Subject: [PATCH] update to funtional component

Signed-off-by: Hailong Cui <ihailong@amazon.com>
---
 .../workspace_list_card.test.tsx.snap         |   2 +-
 .../service_card/workspace_list_card.tsx      | 279 ++++++++----------
 2 files changed, 128 insertions(+), 153 deletions(-)

diff --git a/src/plugins/workspace/public/components/service_card/__snapshots__/workspace_list_card.test.tsx.snap b/src/plugins/workspace/public/components/service_card/__snapshots__/workspace_list_card.test.tsx.snap
index ca48a73e7a4..35970676eb7 100644
--- a/src/plugins/workspace/public/components/service_card/__snapshots__/workspace_list_card.test.tsx.snap
+++ b/src/plugins/workspace/public/components/service_card/__snapshots__/workspace_list_card.test.tsx.snap
@@ -24,7 +24,7 @@ exports[`workspace list card render normally should show workspace list card cor
           class="euiToolTipAnchor"
         >
           <span
-            aria-label="workspace list card descriptioni"
+            aria-label="workspace list card description"
             data-euiicon-type="iInCircle"
           />
         </span>
diff --git a/src/plugins/workspace/public/components/service_card/workspace_list_card.tsx b/src/plugins/workspace/public/components/service_card/workspace_list_card.tsx
index 451fd33e90a..12b14325ce1 100644
--- a/src/plugins/workspace/public/components/service_card/workspace_list_card.tsx
+++ b/src/plugins/workspace/public/components/service_card/workspace_list_card.tsx
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import React, { Component } from 'react';
+import React, { useState, useEffect, useMemo } from 'react';
 import {
   EuiPanel,
   EuiLink,
@@ -21,16 +21,15 @@ import {
   EuiEmptyPrompt,
 } from '@elastic/eui';
 import { i18n } from '@osd/i18n';
-import { Subscription } from 'rxjs';
 import moment from 'moment';
 import { orderBy } from 'lodash';
 import { CoreStart, WorkspaceObject } from '../../../../../core/public';
 import { navigateToWorkspaceDetail } from '../utils/workspace';
 
 import { WORKSPACE_CREATE_APP_ID, WORKSPACE_LIST_APP_ID } from '../../../common/constants';
-import { WorkspaceEntry, recentWorkspaceManager } from '../../recent_workspace_manager';
+import { recentWorkspaceManager } from '../../recent_workspace_manager';
 
-const WORKSPACE_LIST_CARD_DESCRIPTIOIN = i18n.translate('workspace.list.card.descriptionh', {
+const WORKSPACE_LIST_CARD_DESCRIPTION = i18n.translate('workspace.list.card.description', {
   defaultMessage:
     'Workspaces are dedicated environments for organizing and collaborating on your data, dashboards, and analytics workflows. Each Workspace acts as a self-contained space with its own set of saved objects and access controls.',
 });
@@ -41,53 +40,32 @@ export interface WorkspaceListCardProps {
   core: CoreStart;
 }
 
-export interface WorkspaceListItem {
-  id: string;
-  name: string;
-  time?: string | number;
-}
-
-export interface WorkspaceListCardState {
-  availiableWorkspaces: WorkspaceObject[];
-  filter: string;
-  recentWorkspaces: WorkspaceEntry[];
-}
+export const WorkspaceListCard = (props: WorkspaceListCardProps) => {
+  const [availableWorkspaces, setAvailableWorkspaces] = useState<WorkspaceObject[]>([]);
+  const [filter, setFilter] = useState('viewed');
 
-export class WorkspaceListCard extends Component<WorkspaceListCardProps, WorkspaceListCardState> {
-  private workspaceSub?: Subscription;
-  constructor(props: WorkspaceListCardProps) {
-    super(props);
-    this.state = {
-      availiableWorkspaces: [],
-      recentWorkspaces: recentWorkspaceManager.getRecentWorkspaces() || [],
-      filter: 'viewed',
-    };
-  }
-
-  componentDidMount() {
-    this.workspaceSub = this.props.core.workspaces.workspaceList$.subscribe((list) => {
-      this.setState({
-        availiableWorkspaces: list || [],
-      });
+  useEffect(() => {
+    const workspaceSub = props.core.workspaces.workspaceList$.subscribe((list) => {
+      setAvailableWorkspaces(list || []);
     });
-  }
-
-  componentWillUnmount() {
-    this.workspaceSub?.unsubscribe();
-  }
+    return () => {
+      workspaceSub.unsubscribe();
+    };
+  }, [props.core]);
 
-  private loadWorkspaceListItems() {
-    if (this.state.filter === 'viewed') {
-      return orderBy(this.state.recentWorkspaces, ['timestamp'], ['desc'])
-        .filter((ws) => this.state.availiableWorkspaces.some((a) => a.id === ws.id))
+  const workspaceList = useMemo(() => {
+    const recentWorkspaces = recentWorkspaceManager.getRecentWorkspaces() || [];
+    if (filter === 'viewed') {
+      return orderBy(recentWorkspaces, ['timestamp'], ['desc'])
+        .filter((ws) => availableWorkspaces.some((a) => a.id === ws.id))
         .slice(0, MAX_ITEM_IN_LIST)
         .map((item) => ({
           id: item.id,
-          name: this.state.availiableWorkspaces.find((ws) => ws.id === item.id)?.name!,
+          name: availableWorkspaces.find((ws) => ws.id === item.id)?.name!,
           time: item.timestamp,
         }));
-    } else if (this.state.filter === 'updated') {
-      return orderBy(this.state.availiableWorkspaces, ['lastUpdatedTime'], ['desc'])
+    } else if (filter === 'updated') {
+      return orderBy(availableWorkspaces, ['lastUpdatedTime'], ['desc'])
         .slice(0, MAX_ITEM_IN_LIST)
         .map((ws) => ({
           id: ws.id,
@@ -96,122 +74,119 @@ export class WorkspaceListCard extends Component<WorkspaceListCardProps, Workspa
         }));
     }
     return [];
-  }
+  }, [filter, availableWorkspaces]);
 
-  private handleSwitchWorkspace = (id: string) => {
-    const { application, http } = this.props.core;
+  const handleSwitchWorkspace = (id: string) => {
+    const { application, http } = props.core;
     if (application && http) {
       navigateToWorkspaceDetail({ application, http }, id);
     }
   };
 
-  render() {
-    const workspaceList = this.loadWorkspaceListItems();
-    const { application } = this.props.core;
-
-    const isDashboardAdmin = application.capabilities.dashboards?.isDashboardAdmin;
-
-    return (
-      <EuiPanel paddingSize="s" hasBorder={false} hasShadow={false}>
-        <EuiFlexGroup gutterSize="xs" alignItems="center">
-          <EuiFlexItem grow={3}>
-            <EuiTitle>
-              <h4>Workspaces</h4>
-            </EuiTitle>
-          </EuiFlexItem>
-          <EuiFlexItem grow={1}>
-            <EuiToolTip position="bottom" content={WORKSPACE_LIST_CARD_DESCRIPTIOIN}>
-              <EuiIcon type="iInCircle" aria-label="workspace list card descriptioni" />
+  const { application } = props.core;
+
+  const isDashboardAdmin = application.capabilities.dashboards?.isDashboardAdmin;
+
+  return (
+    <EuiPanel paddingSize="s" hasBorder={false} hasShadow={false}>
+      <EuiFlexGroup gutterSize="xs" alignItems="center">
+        <EuiFlexItem grow={3}>
+          <EuiTitle>
+            <h4>Workspaces</h4>
+          </EuiTitle>
+        </EuiFlexItem>
+        <EuiFlexItem grow={1}>
+          <EuiToolTip position="bottom" content={WORKSPACE_LIST_CARD_DESCRIPTION}>
+            <EuiIcon type="iInCircle" aria-label="workspace list card description" />
+          </EuiToolTip>
+        </EuiFlexItem>
+        <EuiFlexItem grow={5}>
+          <EuiSelect
+            value={filter}
+            data-test-subj="workspace_filter"
+            onChange={(e) => {
+              setFilter(e.target.value);
+            }}
+            options={[
+              {
+                value: 'viewed',
+                text: i18n.translate('workspace.list.card.filter.viewed', {
+                  defaultMessage: 'Recently viewed',
+                }),
+              },
+              {
+                value: 'updated',
+                text: i18n.translate('workspace.list.card.filter.updated', {
+                  defaultMessage: 'Recently updated',
+                }),
+              },
+            ]}
+          />
+        </EuiFlexItem>
+        {isDashboardAdmin && (
+          <EuiFlexItem grow={false}>
+            <EuiToolTip position="top" content="Create workspace">
+              <EuiButtonIcon
+                data-test-subj="create_workspace"
+                aria-label="create workspace"
+                display="base"
+                iconType="plus"
+                size="m"
+                onClick={() => {
+                  application.navigateToApp(WORKSPACE_CREATE_APP_ID);
+                }}
+              />
             </EuiToolTip>
           </EuiFlexItem>
-          <EuiFlexItem grow={5}>
-            <EuiSelect
-              value={this.state.filter}
-              data-test-subj="workspace_filter"
-              onChange={(e) => {
-                this.setState({ filter: e.target.value });
-              }}
-              options={[
-                {
-                  value: 'viewed',
-                  text: i18n.translate('workspace.list.card.filter.viewed', {
-                    defaultMessage: 'Recently viewed',
-                  }),
-                },
-                {
-                  value: 'updated',
-                  text: i18n.translate('workspace.list.card.filter.updated', {
-                    defaultMessage: 'Recently updated',
-                  }),
-                },
-              ]}
-            />
-          </EuiFlexItem>
-          {isDashboardAdmin && (
-            <EuiFlexItem grow={false}>
-              <EuiToolTip position="top" content="Create workspace">
-                <EuiButtonIcon
-                  data-test-subj="create_workspace"
-                  aria-label="create workspace"
-                  display="base"
-                  iconType="plus"
-                  size="m"
+        )}
+      </EuiFlexGroup>
+
+      <EuiSpacer />
+      <EuiListGroup flush={true} bordered={false} style={{ minHeight: '300px' }}>
+        {workspaceList && workspaceList.length === 0 ? (
+          <EuiEmptyPrompt
+            iconType="database"
+            titleSize="xs"
+            title={<p>No Workspaces found</p>}
+            body={i18n.translate('workspace.list.card.empty', {
+              values: {
+                filter,
+              },
+              defaultMessage: 'Workspaces you have recently {filter} will appear here.',
+            })}
+          />
+        ) : (
+          <EuiDescriptionList
+            type="column"
+            titleProps={{ style: { width: '70%' } }}
+            descriptionProps={{ style: { width: '30%' } }}
+            listItems={workspaceList.map((workspace) => ({
+              title: (
+                <EuiLink
                   onClick={() => {
-                    application.navigateToApp(WORKSPACE_CREATE_APP_ID);
+                    handleSwitchWorkspace(workspace.id);
                   }}
-                />
-              </EuiToolTip>
-            </EuiFlexItem>
-          )}
-        </EuiFlexGroup>
-
-        <EuiSpacer />
-        <EuiListGroup flush={true} bordered={false} style={{ minHeight: '300px' }}>
-          {workspaceList && workspaceList.length === 0 ? (
-            <EuiEmptyPrompt
-              iconType="database"
-              titleSize="xs"
-              title={<p>No Workspaces found</p>}
-              body={i18n.translate('workspace.list.card.empty', {
-                values: {
-                  filter: this.state.filter,
-                },
-                defaultMessage: 'Workspaces you have recently {filter} will appear here.',
-              })}
-            />
-          ) : (
-            <EuiDescriptionList
-              type="column"
-              titleProps={{ style: { width: '70%' } }}
-              descriptionProps={{ style: { width: '30%' } }}
-              listItems={workspaceList.map((workspace) => ({
-                title: (
-                  <EuiLink
-                    onClick={() => {
-                      this.handleSwitchWorkspace(workspace.id);
-                    }}
-                  >
-                    <EuiText size="s">{workspace.name}</EuiText>
-                  </EuiLink>
-                ),
-                description: (
-                  <EuiText size="s" color="subdued" className="eui-textRight">
-                    {moment(workspace.time).fromNow()}
-                  </EuiText>
-                ),
-              }))}
-            />
-          )}
-        </EuiListGroup>
-
-        <EuiLink
-          onClick={() => {
-            application.navigateToApp(WORKSPACE_LIST_APP_ID);
-          }}
-        >
-          <EuiText size="s">View all</EuiText>
-        </EuiLink>
-      </EuiPanel>
-    );
-  }
-}
+                >
+                  <EuiText size="s">{workspace.name}</EuiText>
+                </EuiLink>
+              ),
+              description: (
+                <EuiText size="s" color="subdued" className="eui-textRight">
+                  {moment(workspace.time).fromNow()}
+                </EuiText>
+              ),
+            }))}
+          />
+        )}
+      </EuiListGroup>
+
+      <EuiLink
+        onClick={() => {
+          application.navigateToApp(WORKSPACE_LIST_APP_ID);
+        }}
+      >
+        <EuiText size="s">View all</EuiText>
+      </EuiLink>
+    </EuiPanel>
+  );
+};