feat(admin): 增加工作台大屏和转码通知

src/utils/transcodeNoticeSeen.ts

@@ -0,0 +1,51 @@
+// Author: fruit.com.cn
+
+const SEEN_KEY = 'transcode-notice-seen'
+
+export const TRANSCODE_NOTICE_SEEN = 'transcode-notice-seen'
+
+export interface NoticeCounts {
+  running: number
+  success: number
+  failed: number
+}
+
+/** 上次打开通知页时已经看过的数量。 */
+export function readSeen(): NoticeCounts {
+  try {
+    const raw = localStorage.getItem(SEEN_KEY)
+    if (!raw) return { running: 0, success: 0, failed: 0 }
+    const data = JSON.parse(raw) as NoticeCounts
+    return {
+      running: Number(data.running || 0),
+      success: Number(data.success || 0),
+      failed: Number(data.failed || 0)
+    }
+  } catch {
+    return { running: 0, success: 0, failed: 0 }
+  }
+}
+
+/** 比上次查看多出来的数量，看过的不再计入角标。 */
+export function unreadCounts(current: NoticeCounts): NoticeCounts {
+  const seen = readSeen()
+  return {
+    running: Math.max(0, current.running - seen.running),
+    success: Math.max(0, current.success - seen.success),
+    failed: Math.max(0, current.failed - seen.failed)
+  }
+}
+
+/** 把当前数量记为已读，并通知顶栏收起角标。 */
+export function markTranscodeNoticeSeen(current: NoticeCounts) {
+  const seen = readSeen()
+  localStorage.setItem(
+    SEEN_KEY,
+    JSON.stringify({
+      running: Math.max(seen.running, current.running),
+      success: Math.max(seen.success, current.success),
+      failed: Math.max(seen.failed, current.failed)
+    })
+  )
+  window.dispatchEvent(new Event(TRANSCODE_NOTICE_SEEN))
+}