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