feat: support i18n

app/locales/cn.ts

@@ -0,0 +1,71 @@
+
+const cn = {
+    ChatItem: {
+        ChatItemCount: (count: number) => `${count} 条对话`,
+    },
+    Chat: {
+        SubTitle: (count: number) => `与 ChatGPT 的 ${count} 条对话`,
+        Actions: {
+            ChatList: '查看消息列表',
+            CompressedHistory: '查看压缩后的历史 Prompt',
+            Export: '导出聊天记录',
+        },
+        Typing: '正在输入…',
+        Input: (submitKey: string) => `输入消息，${submitKey} 发送`,
+        Send: '发送',
+    },
+    Export: {
+        Title: '导出聊天记录为 Markdown',
+        Copy: '全部复制',
+        Download: '下载文件',
+    },
+    Memory: {
+        Title: '上下文记忆 Prompt',
+        EmptyContent: '尚未记忆',
+        Copy: '全部复制',
+    },
+    Home: {
+        NewChat: '新的聊天',
+    },
+    Settings: {
+        Title: '设置',
+        SubTitle: '设置选项',
+        Actions: {
+            ClearAll: '清除所有数据',
+            ResetAll: '重置所有选项',
+            Close: '关闭',
+        },
+        Lang: {
+            Name: 'Language',
+            Options: {
+                cn: '中文',
+                en: 'English'
+            }
+        },
+        Avatar: '头像',
+        SendKey: '发送键',
+        Theme: '主题',
+        TightBorder: '紧凑边框',
+        HistoryCount: '附带历史消息数',
+        CompressThreshold: '历史消息长度压缩阈值',
+    },
+    Store: {
+        DefaultTopic: '新的聊天',
+        BotHello: '有什么可以帮你的吗',
+        Error: '出错了，稍后重试吧',
+        Prompt: {
+            History: (content: string) => '这是 ai 和用户的历史聊天总结作为前情提要：' + content,
+            Topic: "直接返回这句话的简要主题，不要解释，如果没有主题，请直接返回“闲聊”",
+            Summarize: '简要总结一下你和用户的对话，用作后续的上下文提示 prompt，控制在 50 字以内',
+        },
+        ConfirmClearAll: '确认清除所有聊天、设置数据？',
+    },
+    Copy: {
+        Success: '已写入剪切板',
+        Failed: '复制失败，请赋予剪切板权限',
+    }
+}
+
+export type LocaleType = typeof cn;
+
+export default cn;

app/locales/en.ts

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+import type { LocaleType } from './index'
+
+const en: LocaleType = {
+    ChatItem: {
+        ChatItemCount: (count: number) => `${count} messages`,
+    },
+    Chat: {
+        SubTitle: (count: number) => `${count} messages with ChatGPT`,
+        Actions: {
+            ChatList: 'Go To Chat List',
+            CompressedHistory: 'Compressed History Memory Prompt',
+            Export: 'Export All Messages as Markdown',
+        },
+        Typing: 'Typing…',
+        Input: (submitKey: string) => `Type something and press ${submitKey} to send`,
+        Send: 'Send',
+    },
+    Export: {
+        Title: 'All Messages',
+        Copy: 'Copy All',
+        Download: 'Download',
+    },
+    Memory: {
+        Title: 'Memory Prompt',
+        EmptyContent: 'Nothing yet.',
+        Copy: 'Copy All',
+    },
+    Home: {
+        NewChat: 'New Chat',
+    },
+    Settings: {
+        Title: 'Settings',
+        SubTitle: 'All Settings',
+        Actions: {
+            ClearAll: 'Clear All Data',
+            ResetAll: 'Reset All Settings',
+            Close: 'Close',
+        },
+        Lang: {
+            Name: '语言',
+            Options: {
+                cn: '中文',
+                en: 'English'
+            }
+        },
+        Avatar: 'Avatar',
+        SendKey: 'Send Key',
+        Theme: 'Theme',
+        TightBorder: 'Tight Border',
+        HistoryCount: 'History Message Count',
+        CompressThreshold: 'Message Compression Threshold',
+    },
+    Store: {
+        DefaultTopic: 'New Conversation',
+        BotHello: 'Hello! How can I assist you today?',
+        Error: 'Something went wrong, please try again later.',
+        Prompt: {
+            History: (content: string) => 'This is a summary of the chat history between the AI and the user as a recap: ' + content,
+            Topic: "Provide a brief topic of the sentence without explanation. If there is no topic, return 'Chitchat'.",
+            Summarize: 'Summarize our discussion briefly in 50 characters or less to use as a prompt for future context.',
+        },
+        ConfirmClearAll: 'Confirm to clear all chat and setting data?',
+    },
+    Copy: {
+        Success: 'Copied to clipboard',
+        Failed: 'Copy failed, please grant permission to access clipboard',
+    }
+}
+
+export default en;

app/locales/index.ts

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+import CN from './cn'
+import EN from './en'
+
+export type { LocaleType } from './cn'
+
+type Lang = 'en' | 'cn'
+
+const LANG_KEY = 'lang'
+export function getLang(): Lang {
+    const savedLang = localStorage?.getItem(LANG_KEY)
+
+    if (['en', 'cn'].includes(savedLang ?? '')) {
+        return savedLang as Lang
+    }
+
+    const lang = navigator.language.toLowerCase()
+
+    if (lang.includes('zh') || lang.includes('cn')) {
+        return 'cn'
+    } else {
+        return 'en'
+    }
+}
+
+export function changeLang(lang: Lang) {
+    localStorage.setItem(LANG_KEY, lang)
+    location.reload()
+}
+
+export default { en: EN, cn: CN }[getLang()]