WechatApp/utils/file.js

import { CDN_CACHE_KEY } from '@/settings/enums';
import { DEFAULT_CDN_URL, UPLOAD } from '@/settings/siteSetting';
import { isString } from './is.js';

/** 获取文件CDN前缀 */
export async function getCdnUrl() {
	try {
		const res = 'xxxxxxxxxxx';
		uni.setStorageSync('CDN_UPLOAD', res.data + '/');
	} catch (error) {
		console.log(error);
	}
}

/**
 * 输出完整文件地址
 * @param url
 */

export function getFileUrl(url, planB = false) {
	if (url === '') return url;

	if (!isString(url)) return url;

	// 特殊处理，/static 开头 是本地文件
	if (url.indexOf('/static') === 0) return url;

	if (/^(https|http):\/\//i.test(url) || /^(data|http|https):/i.test(url) || url.indexOf('http://') >= 0 || url.indexOf('https://') >= 0) return url;

	// 如果第一位非 / 开头 补全指定目录前缀
	if (!/^\//.test(url) && !planB) url = `/orderFood/${url}`;

	url = url.replace(/\.+\//gi, '/').replace(/~+/gi, '/').replace(/\/+/gi, '/').replace(/\//, '').replace(/\\/g, '/');

	// CDN 路径 增加回退逻辑，防止当异步数据没有返回时，页面已经开始加载数据，导致图片无法正常显示
	let prefix = uni.getStorageSync(CDN_CACHE_KEY) || DEFAULT_CDN_URL;
	if (planB) prefix = uni.getStorageSync('CDN_UPLOAD') || UPLOAD;

	// ios老版本不支持webp（使用 getDeviceInfo 替代已废弃的 getSystemInfoSync）
	let platform = '';
	let systemVersion = '';
	try {
		if (typeof uni.getDeviceInfo === 'function') {
			const deviceInfo = uni.getDeviceInfo();
			platform = deviceInfo.platform || '';
			systemVersion = deviceInfo.system || '';
		} else {
			const systemInfo = uni.getSystemInfoSync();
			platform = systemInfo.platform || '';
			systemVersion = systemInfo.osVersion || systemInfo.system || '';
		}
	} catch (e) {}
	if (url.split('.')[1] == 'webp' && platform == 'ios') {
		const parts = systemVersion.split('.');
		const major = parts[0] || '0';
		const minor = parts[1] || '0';
		if (major < '18' || (major == '18' && minor < '2')) {
			url = url.split('.')[0] + '.jpg';
		}
	}

	return prefix + url;
}