feat: support cache by language

utils/constants/language.ts

@@ -1,14 +1,14 @@
 export const PROMPT_LANGUAGE_MAP: { [key: string]: string } = {
-  English: 'UK English',
-  中文: 'Simplified Chinese',
-  繁體中文: 'Traditional Chinese',
-  日本語: 'Japanese',
-  Italiano: 'Italian',
-  Deutsch: 'German',
-  Español: 'Spanish',
-  Français: 'French',
-  Nederlands: 'Dutch',
-  한국어: 'Korean',
-  ភាសាខ្មែរ: 'Khmer',
-  हिंदी: 'Hindi',
+  English: 'en-US',
+  中文: 'zh-CN',
+  繁體中文: 'zh-TW',
+  日本語: 'ja-JP',
+  Italiano: 'it-IT',
+  Deutsch: 'de-DE',
+  Español: 'es-ES',
+  Français: 'fr-FR',
+  Nederlands: 'nl-NL',
+  한국어: 'ko-KR',
+  ភាសាខ្មែរ: 'km-KH',
+  हिंदी: 'hi-IN',
 }

utils/getCacheId.ts

@@ -1,5 +1,6 @@
 import { VideoConfig } from '~/lib/types'
 
-export function getCacheId({ showTimestamp, videoId, detailLevel }: VideoConfig) {
-  return showTimestamp ? `timestamp-${videoId}-${detailLevel}` : `${videoId}-${detailLevel}`
+export function getCacheId({ showTimestamp, videoId, outputLanguage, detailLevel }: VideoConfig) {
+  const prefix = showTimestamp ? 'timestamp-' : ''
+  return `${prefix}${videoId}-${outputLanguage}-${detailLevel}`
 }