fix: Missing version, updated timestamp and recent changes (#726)

Author: TheArmKing

lib/app.js

@@ -92,14 +92,17 @@ const MAPPINGS = {
   IAPRange: ['ds:5', 1, 2, 19, 0],
   androidVersion: {
     path: ['ds:5', 1, 2, 140, 1, 1, 0, 0, 1],
+    fallbackPath: ['ds:5', 1, 2, -1, '141', 1, 1, 0, 0, 1],
     fun: helper.normalizeAndroidVersion
   },
   androidVersionText: {
     path: ['ds:5', 1, 2, 140, 1, 1, 0, 0, 1],
+    fallbackPath: ['ds:5', 1, 2, -1, '141', 1, 1, 0, 0, 1],
     fun: (version) => version || 'Varies with device'
   },
   androidMaxVersion: {
     path: ['ds:5', 1, 2, 140, 1, 1, 0, 1, 1],
+    fallbackPath: ['ds:5', 1, 2, -1, '141', 1, 1, 0, 1, 1],
     fun: helper.normalizeAndroidVersion
   },
   developer: ['ds:5', 1, 2, 68, 0],
@@ -161,13 +164,19 @@ const MAPPINGS = {
   released: ['ds:5', 1, 2, 10, 0],
   updated: {
     path: ['ds:5', 1, 2, 145, 0, 1, 0],
+    fallbackPath: ['ds:5', 1, 2, -1, '146', 0, 1, 0],
     fun: (ts) => ts * 1000
   },
   version: {
     path: ['ds:5', 1, 2, 140, 0, 0, 0],
+    fallbackPath: ['ds:5', 1, 2, -1, '141', 0, 0, 0],
     fun: (val) => val || 'VARY'
   },
-  recentChanges: ['ds:5', 1, 2, 144, 1, 1],
+  recentChanges: {
+    path: ['ds:5', 1, 2, 144, 1, 1],
+    fallbackPath: ['ds:5', 1, 2, -1, '145', 1, 1],
+    fun: (val) => val
+  },
   comments: {
     path: [],
     isArray: true,

lib/utils/scriptData.js

@@ -45,9 +45,15 @@ function extractor (mappings) {
       // extractDataWithServiceRequestId explanation:
       // https://github.com/facundoolano/google-play-scraper/pull/412
       // assume spec object
-      const input = (spec.useServiceRequestId)
-        ? extractDataWithServiceRequestId(parsedData, spec)
-        : R.path(spec.path, parsedData);
+      let input;
+      if (spec.useServiceRequestId) {
+        input = extractDataWithServiceRequestId(parsedData, spec);
+      } else {
+        input = R.path(spec.path, parsedData);
+        if ((input === null || input === undefined) && spec.fallbackPath) {
+          input = R.path(spec.fallbackPath, parsedData);
+        }
+      }
 
       return spec.fun(input, parsedData);
     }, mappings);