320 lines
14 KiB
TypeScript
320 lines
14 KiB
TypeScript
import type { Advertisement } from '../api/types';
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import { recordList, safeUrl } from '../api/protocol';
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const AGE_KEY = 'hg_age_ok';
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const DISMISSED_KEY = 'dialogAdDismissed';
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const PROGRESS_KEY = 'dialogAdProgress';
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const GRID_DISMISSED_KEY = 'gridAdDismissed';
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function advertisements(list: unknown): Advertisement[] {
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return recordList<Advertisement>(list).map(item => ({...item,
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id: String(item.advertiseCode || '').trim() || String(item.id || '').trim(),
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images: safeUrl(item.images), link: safeUrl(item.link), title: String(item.title || '').trim(),
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})).filter(item => item.images);
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}
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type SessionStore = Pick<Storage, 'getItem' | 'setItem' | 'removeItem'>;
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export interface StartupView {
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showAge(): void;
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closeAge(): void;
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prepareAdvertisement(): void;
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loadAdvertisement(item: Advertisement, signal: AbortSignal): Promise<void>;
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showAdvertisement(item: Advertisement): void;
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hideAdvertisement(): void;
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loadGrid(items: Advertisement[], signal: AbortSignal): Promise<Advertisement[]>;
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showGrid(items: Advertisement[]): void;
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hideGrid(): void;
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}
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/** Session keys, signature version and resume behavior for JHA-1050. */
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export class StartupDialogs {
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private accepted = false;
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private items: Advertisement[] = [];
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private signature = '';
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private index = 0;
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private readyIndex = -1;
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private visibleIndex = -1;
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private displayed = false;
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private generation = 0;
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private loading?: AbortController;
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private advertisementPending = false;
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private gridSignature = '';
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private gridItems: Advertisement[] = [];
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private gridLoading?: AbortController;
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private gridVisible = false;
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private gridDismissed = false;
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constructor(private storage: SessionStore, private view: StartupView, confirmed = false) {
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this.accepted = confirmed || this.read(AGE_KEY) === '1';
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if (this.accepted) view.closeAge(); else view.showAge();
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}
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private read(key: string) {try {return this.storage.getItem(key) || '';} catch {return '';}}
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private write(key: string, value: string) {try {this.storage.setItem(key, value);} catch {}}
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private remove(key: string) {try {this.storage.removeItem(key);} catch {}}
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confirmAge() {
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this.write(AGE_KEY, '1');
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this.accepted = true;
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this.view.closeAge();
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this.showReady();
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this.showGridReady();
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}
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setAdvertisements(list: Advertisement[], gridList: Advertisement[] = []) {
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const items = advertisements(list);
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const signature = items.length ? '2|' + items.map((item, index) => item.id || item.images || String(index)).join('|') : '';
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const changed = signature !== this.signature;
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if (changed) {
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this.generation++;
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this.loading?.abort();
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this.view.hideAdvertisement();
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this.view.hideGrid();
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this.gridVisible = false;
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this.items = items;
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this.signature = signature;
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this.readyIndex = this.visibleIndex = -1;
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this.displayed = false;
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this.advertisementPending = !!items.length && this.read(DISMISSED_KEY) !== signature;
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}
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this.setGridAdvertisements(gridList);
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if (changed && this.advertisementPending) void this.showItem(this.readProgress());
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this.showGridReady();
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}
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private setGridAdvertisements(list: Advertisement[]) {
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const items = advertisements(list);
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const signature = items.length ? JSON.stringify(items.map(item => [item.id, item.images, item.link, item.title])) : '';
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if (signature === this.gridSignature) return;
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this.gridLoading?.abort();
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this.view.hideGrid();
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this.gridVisible = false;
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this.gridItems = [];
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this.gridSignature = signature;
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this.gridDismissed = this.read(GRID_DISMISSED_KEY) === signature;
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if (!items.length || this.gridDismissed) return;
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const controller = this.gridLoading = new AbortController();
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void this.view.loadGrid(items, controller.signal).then(loaded => {
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if (controller.signal.aborted) return;
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this.gridItems = loaded;
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this.showGridReady();
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}).catch(() => { /* A failed grid must never block the page or the other dialogs. */ });
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}
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private showGridReady() {
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if (!this.accepted || this.advertisementPending || this.gridVisible || this.gridDismissed || !this.gridItems.length) return;
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this.gridVisible = true;
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this.view.showGrid(this.gridItems);
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}
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dismissGrid() {
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if (!this.gridVisible) return;
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this.gridDismissed = true;
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this.gridVisible = false;
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this.write(GRID_DISMISSED_KEY, this.gridSignature);
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this.view.hideGrid();
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}
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private readProgress() {
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try {
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const progress = JSON.parse(this.read(PROGRESS_KEY));
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const value = Number(progress?.index);
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return progress?.signature === this.signature && Number.isFinite(value) && value >= 0 ? Math.floor(value) : 0;
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} catch {return 0;}
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}
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private async showItem(index: number) {
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const generation = ++this.generation;
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this.loading?.abort();
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this.readyIndex = this.visibleIndex = -1;
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this.index = index;
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if (index >= this.items.length) {this.finish(); return;}
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this.write(PROGRESS_KEY, JSON.stringify({signature: this.signature, index}));
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this.view.prepareAdvertisement();
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const controller = this.loading = new AbortController();
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try {
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await this.view.loadAdvertisement(this.items[index], controller.signal);
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if (controller.signal.aborted || generation !== this.generation) return;
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this.readyIndex = index;
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this.showReady();
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} catch {
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if (!controller.signal.aborted && generation === this.generation) void this.showItem(index + 1);
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}
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}
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private showReady() {
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if (!this.accepted || this.readyIndex < 0 || this.visibleIndex === this.readyIndex) return;
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this.visibleIndex = this.readyIndex;
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this.displayed = true;
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this.view.showAdvertisement(this.items[this.readyIndex]);
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}
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nextAdvertisement() {
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if (!this.accepted || this.visibleIndex < 0) return;
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void this.showItem(this.visibleIndex + 1);
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}
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private finish() {
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if (this.displayed) this.write(DISMISSED_KEY, this.signature); else this.remove(DISMISSED_KEY);
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this.remove(PROGRESS_KEY);
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this.view.hideAdvertisement();
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this.readyIndex = this.visibleIndex = -1;
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this.advertisementPending = false;
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this.showGridReady();
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}
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}
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export function loadStartupImage(image: HTMLImageElement, source: string, signal: AbortSignal, timeoutMs = 12000): Promise<void> {
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return new Promise((resolve, reject) => {
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let settled = false;
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const timer = setTimeout(() => finish(new Error('广告图片加载超时')), timeoutMs);
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function finish(error?: Error) {
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if (settled) return;
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settled = true;
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clearTimeout(timer);
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image.removeEventListener('load', loaded);
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image.removeEventListener('error', failed);
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signal.removeEventListener('abort', aborted);
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if (error) reject(error); else resolve();
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}
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function loaded() {finish(image.naturalWidth > 0 ? undefined : new Error('广告图片无法解码'));}
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function failed() {finish(new Error('广告图片加载失败'));}
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function aborted() {finish(new DOMException('Aborted', 'AbortError'));}
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function check() {if (image.complete) loaded();}
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image.addEventListener('load', loaded);
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image.addEventListener('error', failed);
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signal.addEventListener('abort', aborted, {once: true});
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if (signal.aborted) {aborted(); return;}
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try {
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if (window.processImage) {
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Promise.resolve(window.processImage(source, image)).then(result => {
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if (!result) finish(new Error('广告图片解码失败')); else check();
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}).catch(error => finish(error instanceof Error ? error : new Error('广告图片解码失败')));
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} else {image.src = source; check();}
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} catch (error) {finish(error instanceof Error ? error : new Error('广告图片加载失败'));}
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});
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}
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export function startStartupDialogs(): StartupDialogs {
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const age = document.getElementById('startup-age') as HTMLDialogElement;
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const ad = document.getElementById('startup-ad') as HTMLDialogElement;
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const grid = document.getElementById('startup-grid') as HTMLDialogElement;
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const promotions = grid.querySelector<HTMLElement>('.startup-promotions')!;
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let gridLinks = new Map<Advertisement, HTMLAnchorElement>();
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let image = ad.querySelector<HTMLImageElement>('.startup-ad-image')!;
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const media = ad.querySelector<HTMLAnchorElement>('.startup-ad-media')!;
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const loading = ad.querySelector<HTMLElement>('.startup-ad-loading')!;
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const close = ad.querySelector<HTMLButtonElement>('.startup-close')!;
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function track(eventType: string, element: HTMLElement = media) {
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try {
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if (eventType === 'close') {
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if (window.tracker?.advertising) window.tracker.advertising(element, eventType);
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else document.dispatchEvent(new CustomEvent('dialog-ad:track', {detail: {element, eventType}}));
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} else if (window.tracker?.externalAd) window.tracker.externalAd(element, eventType);
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else document.dispatchEvent(new CustomEvent('external-ad:track', {detail: {element, eventType}}));
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} catch { /* Tracking does not interrupt display or dismissal. */ }
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}
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const view: StartupView = {
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showAge() {if (!age.open) age.showModal();},
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closeAge() {
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const wasOpen = age.open;
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if (wasOpen) age.close();
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document.documentElement.classList.add('eighteen-ok');
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if (wasOpen) document.dispatchEvent(new CustomEvent('eighteen:closed'));
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},
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prepareAdvertisement() {media.hidden = true; loading.hidden = false; close.disabled = true; ad.setAttribute('aria-busy', 'true');},
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async loadAdvertisement(item, signal) {
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const pending = image.cloneNode(false) as HTMLImageElement;
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pending.removeAttribute('src');
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pending.setAttribute('fetchpriority', 'high');
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await loadStartupImage(pending, item.images, signal);
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if (signal.aborted) return;
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image.replaceWith(pending);
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image = pending;
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},
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showAdvertisement(item) {
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image.alt = image.title = item.title?.trim() || '推荐广告';
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media.setAttribute('aria-label', item.title || '查看广告');
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if (item.link) media.href = item.link; else media.removeAttribute('href');
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media.dataset.adId = item.advertiseCode || item.id || item.images;
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media.dataset.adClickable = item.link ? '1' : '0';
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media.dataset.adLocation = String(item.location || '');
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media.dataset.adSlotKey = item.advertiseLocationCode || String(item.location || '');
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media.dataset.adSlotName = item.advertiseLocationName || '弹窗广告位';
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media.dataset.adPlacement = 'startup-ad';
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media.hidden = false; loading.hidden = true; close.disabled = false;
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ad.removeAttribute('aria-busy');
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ad.setAttribute('aria-label', item.title || '广告推荐');
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if (!ad.open) ad.showModal();
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track('show');
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},
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hideAdvertisement() {if (ad.open) {if (!media.hidden) track('close'); ad.close();} media.hidden = true; loading.hidden = true; ad.removeAttribute('aria-busy');},
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async loadGrid(items, signal) {
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const links = new Map<Advertisement, HTMLAnchorElement>();
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const loaded = await Promise.all(items.map(async item => {
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const link = document.createElement('a');
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link.className = 'startup-promotion';
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link.target = '_blank';
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link.rel = 'sponsored nofollow noopener noreferrer';
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link.setAttribute('aria-label', item.title || '查看推荐应用');
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if (item.link) link.href = item.link;
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link.dataset.trackAd = 'external';
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link.dataset.adPlacement = 'startup-grid';
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link.dataset.adType = 'icon';
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link.dataset.adId = item.advertiseCode || item.id || item.images;
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link.dataset.adClickable = item.link ? '1' : '0';
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link.dataset.adLocation = String(item.location || '');
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link.dataset.adSlotKey = item.advertiseLocationCode || String(item.location || 'nineGridList');
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link.dataset.adSlotName = item.advertiseLocationName || '宫格弹窗广告位';
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const icon = document.createElement('img');
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icon.width = icon.height = 80;
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icon.alt = item.title || '推荐应用';
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icon.decoding = 'async';
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const name = document.createElement('span');
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name.textContent = item.title || '推荐应用';
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link.append(icon, name);
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try {
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await loadStartupImage(icon, item.images, signal);
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links.set(item, link);
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return item;
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} catch {return null;}
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}));
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if (signal.aborted) return [];
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gridLinks = links;
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return loaded.filter((item): item is Advertisement => item !== null);
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},
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showGrid(items) {
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promotions.replaceChildren(...items.map(item => gridLinks.get(item)!));
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promotions.scrollTop = 0;
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if (!grid.open) grid.showModal();
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document.dispatchEvent(new Event('tracker:refresh'));
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},
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hideGrid() {if (grid.open) {promotions.querySelectorAll<HTMLElement>('.startup-promotion').forEach(link => track('close', link)); grid.close();}},
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};
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const storage: SessionStore = {
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getItem: key => window.sessionStorage.getItem(key),
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setItem: (key, value) => window.sessionStorage.setItem(key, value),
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removeItem: key => window.sessionStorage.removeItem(key),
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};
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const startup = new StartupDialogs(storage, view, document.documentElement.classList.contains('eighteen-ok'));
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age.addEventListener('cancel', event => event.preventDefault());
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age.querySelector('.startup-age-confirm')!.addEventListener('click', () => startup.confirmAge());
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age.querySelectorAll('.startup-age-leave,.startup-close').forEach(button => button.addEventListener('click', () => location.assign('https://www.google.com')));
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function nextAdvertisement() {if (ad.open && !media.hidden) track('close'); startup.nextAdvertisement();}
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close.addEventListener('click', nextAdvertisement);
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ad.addEventListener('cancel', event => {event.preventDefault(); nextAdvertisement();});
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grid.querySelector('.startup-close')!.addEventListener('click', () => startup.dismissGrid());
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grid.addEventListener('cancel', event => {event.preventDefault(); startup.dismissGrid();});
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promotions.addEventListener('click', event => {
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const target = event.target instanceof Element ? event.target : null;
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if (target?.closest('.startup-promotion[href]')) startup.dismissGrid();
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});
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[age, ad, grid].forEach(dialog => {
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dialog.addEventListener('keydown', event => {if (event.key === 'Tab') dialog.classList.add('startup-keyboard-focus');});
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dialog.addEventListener('pointerdown', () => dialog.classList.remove('startup-keyboard-focus'));
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dialog.addEventListener('close', () => dialog.classList.remove('startup-keyboard-focus'));
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});
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media.addEventListener('click', () => {if (ad.open && !media.hidden && media.hasAttribute('href')) track('click');});
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return startup;
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}
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