Add translation infra and replace english text with calls to translate

1 files changed, 54 insertions, 0 deletions

diff --git a/packages/website/ts/utils/translate.ts b/packages/website/ts/utils/translate.ts
new file mode 100644
index 000000000..cddfef088
--- /dev/null
+++ b/packages/website/ts/utils/translate.ts
@@ -0,0 +1,54 @@
+import * as _ from 'lodash';
+import { english } from 'ts/translations/english';
+import { Deco, Key, Language } from 'ts/types';
+
+const languageToTranslations = {
+    [Language.English]: english,
+};
+
+interface Translation {
+    [key: string]: string;
+}
+
+export class Translate {
+    private _selectedLanguage: Language;
+    private _translation: Translation;
+    constructor() {
+        this.setLanguage(Language.English);
+    }
+    public setLanguage(language: Language) {
+        const isLanguageSupported = !_.isUndefined(languageToTranslations[language]);
+        if (!isLanguageSupported) {
+            throw new Error(`${language} not supported`);
+        }
+        this._selectedLanguage = language;
+        this._translation = languageToTranslations[language];
+    }
+    public get(key: Key, decoration?: Deco) {
+        let text = this._translation[key];
+        if (!_.isUndefined(decoration)) {
+            switch (decoration) {
+                case Deco.Cap:
+                    text = this._capitalize(text);
+                    break;
+
+                case Deco.Upper:
+                    text = text.toUpperCase();
+                    break;
+
+                case Deco.CapWords:
+                    const words = text.split(' ');
+                    const capitalizedWords = _.map(words, w => this._capitalize(w));
+                    text = capitalizedWords.join(' ');
+                    break;
+
+                default:
+                    throw new Error(`Unrecognized decoration: ${decoration}`);
+            }
+        }
+        return text;
+    }
+    private _capitalize(text: string) {
+        return `${text.charAt(0).toUpperCase()}${text.slice(1)}`;
+    }
+}