feat: Update nhiều thứ

app/utils/episode.ts

@@ -0,0 +1,25 @@
+function extractEpisodeNumber(value?: string): number {
+  if (!value) return 0
+  const match = value.match(/(\d+)(?:\/\d+)?\s*$/)
+  if (!match) {
+    const anyNumber = value.match(/\d+/)
+    return anyNumber ? Number(anyNumber[0]) : 0
+  }
+  return Number(match[1])
+}
+
+export function getEpisodeDisplay(
+  episode?: string,
+  episodeTotal?: string,
+): string | undefined {
+  if (!episode) return undefined
+
+  const totalNum = extractEpisodeNumber(episodeTotal)
+  const epNum = extractEpisodeNumber(episode)
+
+  if (totalNum > 0 && epNum > 0 && epNum !== totalNum) {
+    return `Tập ${epNum}/${totalNum}`
+  }
+
+  return episode
+}