✨ feat: Add topic empty

Add new translations, modify titles and descriptions, and add new components to the project. Changes involve localization files, image files, and code files.

locales/en_US/empty.json

@@ -0,0 +1,6 @@
+{
+  "topic": {
+    "desc": "Click the button on the left to save the current conversation as a historical topic and start a new conversation",
+    "title": "Topic List"
+  }
+}

locales/en_US/setting.json

@@ -61,7 +61,10 @@
       "title": "Enable History Message Length Compression Threshold"
     },
     "enableHistoryCount": {
-      "title": "Enable History Message Count Limit"
+      "title": "Enable History Message Count Limit",
+      "alias": "Unlimited",
+      "limited": "Only include {{number}} chat messages",
+      "unlimited": "Unlimited chat history"
     },
     "historyCount": {
       "desc": "Number of history messages carried in each request",

locales/zh_CN/empty.json

@@ -0,0 +1,6 @@
+{
+  "topic": {
+    "desc": "点击发送左侧按钮可将当前会话保存为历史话题，并开启新一轮会话",
+    "title": "话题列表"
+  }
+}

locales/zh_CN/setting.json

@@ -61,7 +61,10 @@
       "title": "是否开启历史消息长度压缩阈值"
     },
     "enableHistoryCount": {
-      "title": "是否开启携带的历史消息数限制"
+      "alias": "不限制",
+      "limited": "只包含 {{number}} 条会话消息",
+      "title": "限制历史消息数",
+      "unlimited": "不限历史消息数"
     },
     "historyCount": {
       "desc": "每次请求携带的历史消息数",

src/components/Empty/index.tsx

@@ -0,0 +1,34 @@
+import { ActionIcon } from '@lobehub/ui';
+import { X } from 'lucide-react';
+import { memo, useState } from 'react';
+
+import { useStyles } from './style';
+
+interface EmptyProps {
+  cover: string;
+  desc: string;
+  title: string;
+}
+
+const Empty = memo<EmptyProps>(({ cover, title, desc }) => {
+  const [visiable, setVisiable] = useState(true);
+  const { styles } = useStyles();
+  if (!visiable) return null;
+  return (
+    <div className={styles.container}>
+      <ActionIcon
+        className={styles.close}
+        icon={X}
+        onClick={() => setVisiable(false)}
+        size={{ blockSize: 24, fontSize: 16 }}
+      />
+      {cover && <img alt="empty" src={cover} width="100%" />}
+      <div className={styles.content}>
+        {title && <h3>{title}</h3>}
+        {desc && <p className={styles.desc}>{desc}</p>}
+      </div>
+    </div>
+  );
+});
+
+export default Empty;

src/components/Empty/style.ts

@@ -0,0 +1,28 @@
+import { createStyles } from 'antd-style';
+
+export const useStyles = createStyles(({ css, token, isDarkMode }) => ({
+  close: css`
+    position: absolute;
+    top: 8px;
+    right: 8px;
+  `,
+  container: css`
+    position: relative;
+
+    overflow: hidden;
+
+    background: linear-gradient(
+      to bottom,
+      ${isDarkMode ? token.colorBgElevated : token.colorBgLayout},
+      ${token.colorBgContainer}
+    );
+    border: 1px solid ${token.colorBorderSecondary};
+    border-radius: ${token.borderRadius}px;
+  `,
+  content: css`
+    padding: 0 16px 16px;
+  `,
+  desc: css`
+    color: ${token.colorTextDescription};
+  `,
+}));

src/locales/default/empty.ts

@@ -0,0 +1,6 @@
+export default {
+  topic: {
+    desc: '点击发送左侧按钮可将当前会话保存为历史话题，并开启新一轮会话',
+    title: '话题列表',
+  },
+};

src/locales/resources/en_US.ts

@@ -1,3 +1,15 @@
-const resources = {} as const;
+import common from '../../../locales/en_US/common.json';
+import empty from '../../../locales/en_US/empty.json';
+import error from '../../../locales/en_US/error.json';
+import plugin from '../../../locales/en_US/plugin.json';
+import setting from '../../../locales/en_US/setting.json';
+
+const resources = {
+  common,
+  empty,
+  error,
+  plugin,
+  setting,
+} as const;
 
 export default resources;

src/locales/resources/zh_CN.ts

@@ -1,10 +1,12 @@
 import common from '../default/common';
+import empty from '../default/empty';
 import error from '../default/error';
 import plugin from '../default/plugin';
 import setting from '../default/setting';
 
 const resources = {
   common,
+  empty,
   error,
   plugin,
   setting,

src/pages/chat/[id]/Sidebar/Topic/index.tsx

@@ -1,15 +1,28 @@
+import { useThemeMode } from 'antd-style';
+import { useTranslation } from 'react-i18next';
 import { Flexbox } from 'react-layout-kit';
 import { shallow } from 'zustand/shallow';
 
+import Empty from '@/components/Empty';
 import { topicSelectors, useSessionStore } from '@/store/session';
 
 import TopicItem from './TopicItem';
 
 export const Topic = () => {
   const topics = useSessionStore(topicSelectors.currentTopics);
+  const { isDarkMode } = useThemeMode();
   const [activeTopicId] = useSessionStore((s) => [s.activeTopicId], shallow);
+  const { t } = useTranslation('empty');
   return (
     <Flexbox gap={8}>
+      {topics?.length === 0 && (
+        <Empty
+          cover={`/images/empty_topic_${isDarkMode ? 'dark' : 'light'}.webp`}
+          desc={t('topic.desc')}
+          title={t('topic.title')}
+        />
+      )}
+
       <TopicItem active={!activeTopicId} fav={false} title={'默认话题'} />
 
       {topics.map(({ id, favorite, title }) => (