39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
// utils/media.js — 选图 + 压缩 + 上传云存储，返回 fileID
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// 用法：const fileID = await chooseAndUpload('avatars')
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/**
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* 选择一张图片（已压缩）并上传到云存储。
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* @param {string} prefix 云存储目录前缀，如 'avatars' / 'walk-photos'
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* @returns {Promise<string|null>} fileID（cloud://...）或 null
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*/
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function chooseAndUpload(prefix = 'uploads') {
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return new Promise((resolve) => {
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wx.chooseMedia({
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count: 1,
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mediaType: ['image'],
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sizeType: ['compressed'],
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sourceType: ['album', 'camera'],
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success: async (r) => {
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const temp = r.tempFiles && r.tempFiles[0] && r.tempFiles[0].tempFilePath;
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if (!temp) return resolve(null);
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wx.showLoading({ title: '上传中', mask: true });
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try {
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const up = await wx.cloud.uploadFile({
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cloudPath: `${prefix}/${Date.now()}-${Math.floor(Math.random() * 1e6)}.jpg`,
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filePath: temp,
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});
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resolve(up.fileID);
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} catch (e) {
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wx.showToast({ title: '上传失败', icon: 'none' });
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resolve(null);
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} finally {
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wx.hideLoading();
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}
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},
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fail: () => resolve(null),
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});
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});
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}
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module.exports = { chooseAndUpload };
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