34 lines
1006 B
TypeScript
34 lines
1006 B
TypeScript
import { ensureJssdkReady } from './jssdk';
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import type { WeixinSdkConfig } from './types';
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export function isHttpImageUrl(url?: string | null): url is string {
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return !!url && /^https?:\/\//i.test(url.trim());
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}
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/** 微信内预览图片，便于长按保存到相册（须是可公网访问的 http(s) 地址） */
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export async function previewWechatImage(config: WeixinSdkConfig, url: string): Promise<void> {
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const href = url.trim();
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if (!isHttpImageUrl(href)) {
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throw new Error('图片地址无效');
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}
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await ensureJssdkReady({
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apiBase: config.apiBase ?? '/api/v1',
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clientApp: config.clientApp,
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getAccessToken: config.getAccessToken,
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});
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if (!window.wx?.previewImage) {
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throw new Error('微信预览图片不可用');
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}
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await new Promise<void>((resolve, reject) => {
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window.wx!.previewImage!({
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current: href,
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urls: [href],
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success: () => resolve(),
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fail: (res) => reject(new Error(res?.errMsg || '预览失败')),
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});
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});
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}
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