add en_US structure for plain-text

src/plain-text/index.ts

@@ -1,6 +1,6 @@
-import { PageFooterText, pageFooterZhCn } from './PageFooter';
-import { MainPageText, mainPageZhCn } from './MainPage';
-import { UserPageText, userPageZhCn } from './UserPage';
+import { PageFooterText, pageFooterZhCn, pageFooterEnUs } from './PageFooter';
+import { MainPageText, mainPageZhCn, mainPageEnUs } from './MainPage';
+import { UserPageText, userPageZhCn, userPageEnUs } from './UserPage';
 
 interface TextRecord {
   pageFooter: PageFooterText;
@@ -14,15 +14,23 @@ const textZhCn: TextRecord = {
   userPage: userPageZhCn,
 };
 
+const textEnUs: TextRecord = {
+  pageFooter: pageFooterEnUs,
+  mainPage: mainPageEnUs,
+  userPage: userPageEnUs,
+};
+
 // type Lang = 'zh_CN' | 'en_US' | ...;
-type Lang = 'zh_CN';
+type Lang = 'zh_CN' | 'en_US';
 
 class PlainText {
   private readonly textZhCn: TextRecord;
+  private readonly textEnUs: TextRecord;
   private lang: Lang;
 
   constructor() {
     this.textZhCn = textZhCn;
+    this.textEnUs = textEnUs;
     this.lang = 'zh_CN';
   }
 
@@ -33,6 +41,8 @@ class PlainText {
   get(): TextRecord {
     if (this.lang == 'zh_CN') {
       return this.textZhCn;
+    } else if (this.lang == 'en_US') {
+      return this.textEnUs;
     }
     return this.textZhCn;
   }