更新

app/util/tool.js

@@ -0,0 +1,46 @@
+'use strict';
+
+// 随机长度字符串
+const randomString = len => {
+  len = len || 10;
+  const chars = 'abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+  const maxPos = chars.length;
+  let str = '';
+  for (let i = 0; i < len; i++) {
+    str += chars.charAt(Math.floor(Math.random() * maxPos));
+  }
+  return str;
+};
+
+const getSuffix = fileName => {
+  const arr = fileName.split('.');
+  let suffix = '';
+  if (arr.length >= 2) {
+    suffix = arr[arr.length - 1];
+  }
+  if (suffix) suffix = `.${suffix}`;
+  return suffix;
+};
+
+const getFilePath = type => {
+  const now = new Date();
+  const fullYears = now.getFullYear();
+  const Month = now.getMonth();
+  let typeStr = '';
+  switch (type) {
+    case 'blog':
+      typeStr = 'blog';
+      break;
+    default:
+      typeStr = 'media';
+      break;
+  }
+  const path = `${typeStr}/${fullYears}/${Month}/`;
+  return path;
+};
+
+module.exports = {
+  randomString,
+  getSuffix,
+  getFilePath,
+};