69 lines
2.1 KiB
JavaScript
69 lines
2.1 KiB
JavaScript
/**
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* 小程序系统信息兼容层：
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* 1. 优先使用微信推荐的新接口，避免 `getSystemInfoSync` 废弃告警；
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* 2. 老基础库不存在新接口时，回退到旧接口，保证兼容；
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* 3. 仅暴露当前仓库真正需要的最小字段，避免把整份系统信息继续向外扩散。
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*/
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function callSyncApi(api, name) {
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if (!api || typeof api[name] !== "function") return {};
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try {
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const result = api[name]();
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return result && typeof result === "object" ? result : {};
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} catch {
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return {};
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}
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}
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function resolveWxApi(wxLike) {
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return wxLike || (typeof wx !== "undefined" ? wx : null);
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}
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/**
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* 读取窗口尺寸。
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* 微信已建议从 `getWindowInfo` 获取窗口相关字段；旧环境则回退到 `getSystemInfoSync`。
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*/
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function getWindowMetrics(wxLike) {
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const api = resolveWxApi(wxLike);
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const modern = callSyncApi(api, "getWindowInfo");
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if (Object.keys(modern).length > 0) {
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return {
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windowWidth: Number(modern.windowWidth),
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windowHeight: Number(modern.windowHeight)
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};
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}
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const legacy = callSyncApi(api, "getSystemInfoSync");
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return {
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windowWidth: Number(legacy.windowWidth),
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windowHeight: Number(legacy.windowHeight)
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};
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}
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/**
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* 组合“运行环境 + 设备”指纹。
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* 这里只保留当前代码真正用到的 `platform/system/brand` 三个字段。
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*/
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function getRuntimeFingerprint(wxLike) {
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const api = resolveWxApi(wxLike);
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const appBase = callSyncApi(api, "getAppBaseInfo");
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const device = callSyncApi(api, "getDeviceInfo");
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if (Object.keys(appBase).length > 0 || Object.keys(device).length > 0) {
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return {
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platform: String(appBase.platform || device.platform || ""),
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system: String(device.system || appBase.system || ""),
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brand: String(device.brand || appBase.brand || "")
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};
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}
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const legacy = callSyncApi(api, "getSystemInfoSync");
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return {
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platform: String(legacy.platform || ""),
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system: String(legacy.system || ""),
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brand: String(legacy.brand || "")
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};
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}
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module.exports = {
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getWindowMetrics,
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getRuntimeFingerprint
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};
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