op 1

src/utils/analysis.ts

@@ -0,0 +1,45 @@
+import type { PlaylistMetadata, SelectableVideoMetadata, VideoMetadata } from '../types/media'
+
+export function detectMixUrl(url: string): boolean {
+  return url.includes('v=') && url.includes('list=')
+}
+
+export function stripPlaylistContext(rawUrl: string): string {
+  try {
+    const url = new URL(rawUrl)
+    url.searchParams.delete('list')
+    url.searchParams.delete('index')
+    url.searchParams.delete('start_radio')
+    return url.toString()
+  } catch {
+    return rawUrl
+      .replace(/[?&]list=[^&]+/g, '')
+      .replace(/[?&]index=[^&]+/g, '')
+      .replace(/[?&]start_radio=[^&]+/g, '')
+      .replace('?&', '?')
+      .replace(/&&+/g, '&')
+      .replace(/[?&]$/, '')
+  }
+}
+
+export function isLikelyHttpUrl(input: string): boolean {
+  return input.startsWith('http://') || input.startsWith('https://')
+}
+
+export function normalizeBatchLinks(input: string): string[] {
+  return input
+    .split('\n')
+    .map(line => line.trim())
+    .filter(Boolean)
+    .filter(isLikelyHttpUrl)
+    .filter(link => !link.includes('list=') || detectMixUrl(link))
+    .map(link => detectMixUrl(link) ? stripPlaylistContext(link) : link)
+}
+
+export function toSelectableEntries(entries: VideoMetadata[]): SelectableVideoMetadata[] {
+  return entries.map(entry => ({ ...entry, selected: true }))
+}
+
+export function countSelectedEntries(metadata: PlaylistMetadata | null): number {
+  return metadata?.entries.filter(entry => entry.selected).length ?? 0
+}