feat(edge-cases): using proxy to get better default

crawler/casLogIn.js

@@ -13,7 +13,7 @@ const ocr = require('./captcha')
  */
 module.exports = async (school, user) => {
   // improve school campatibility with defaults and edge-cases
-  const schoolEdgeCases = require('./school-edge-cases')[school.name] || {}
+  const schoolEdgeCases = require('./school-edge-cases')(school.name)
 
   const headers = {
     'Cache-control': 'max-age=0',
@@ -44,7 +44,7 @@ module.exports = async (school, user) => {
   // create document for crawling
   const body = await res.text()
   const $ = cheerio.load(body)
-  const form = $('form[method=post]').get(schoolEdgeCases.formIdx || 0)
+  const form = $('form[method=post]').get(schoolEdgeCases.formIdx)
   const hiddenInputList = $('input[type=hidden]', form)
 
   // grab hidden input name-value, this maybe error-prone, but compatible
@@ -66,10 +66,11 @@ module.exports = async (school, user) => {
     username: user.username,
     password: pwdSalt ? new AES(user.password, pwdSalt).encrypt() : user.password,
     ...hiddenInputNameValueMap,
+    rememberMe: schoolEdgeCases.rememberMe,
   })
 
   // check captcha is needed
-  if (schoolEdgeCases.supportCaptcha || true) {
+  if (schoolEdgeCases.supportCaptcha) {
     res = await fetch(`${school.checkCaptcha}?username=${user.username}`, {
       headers,
     })

crawler/school-edge-cases.js

@@ -1,9 +1,29 @@
 // @ts-check
-module.exports = {
+const schoolEdgeCases = {
   武汉轻工大学: {
-    formIdx: 2, // default 0
+    formIdx: 2,
   },
   宁波大学: {
-    supportCaptcha: false, // default true
+    supportCaptcha: false,
+    rememberMe: 'on',
   },
 }
+
+// we will using proxy to get the default properties
+const defaultProps = {
+  rememberMe: true,
+  formIdx: 0,
+  supportCaptcha: true,
+}
+
+module.exports = (schoolName) =>
+  schoolName
+    ? new Proxy(schoolEdgeCases[schoolName], {
+        get(target, prop, receiver) {
+          if (target[prop] === undefined) {
+            return defaultProps[prop]
+          }
+          return Reflect.get(target, prop, receiver)
+        },
+      })
+    : {}