0.0.0

miniprogram/utils/media.js

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