feat: stats route return object creation time (#698)

* added application date to hacker stats

* undo commit of package-lock.json

* add applicationDate stat to the getStats test call

* undo accidental gitignore

* update sample request + commented timestamp processing

updated the sample request for in-line apidoc for /hacker/stats and added comments to clarify timestamp processing

Author: meldunn

routes/api/hacker.js

@@ -240,7 +240,8 @@ module.exports = {
                             graduationYear: { "2019": 10 },
                             dietaryRestrictions: { "None": 10 },
                             shirtSize: { "M": 3, "XL": 7 },
-                            age: { "22": 10 }
+                            age: { "22": 10 },
+                            applicationDate: {"2020-12-27" : 2, "2020-12-28" : 8}
                         }
          *          }
          *      }

services/hacker.service.js

@@ -148,7 +148,8 @@ function getStats(hackers) {
         graduationYear: {},
         dietaryRestrictions: {},
         shirtSize: {},
-        age: {}
+        age: {},
+        applicationDate: {}
     };
 
     hackers.forEach((hacker) => {
@@ -198,7 +199,7 @@ function getStats(hackers) {
         stats.graduationYear[hacker.application.general.graduationYear] = stats
             .graduationYear[hacker.application.general.graduationYear]
             ? stats.graduationYear[hacker.application.general.graduationYear] +
-            1
+              1
             : 1;
         for (const dietaryRestrictions of hacker.accountId
             .dietaryRestrictions) {
@@ -213,6 +214,17 @@ function getStats(hackers) {
             : 1;
         const age = hacker.accountId.getAge();
         stats.age[age] = stats.age[age] ? stats.age[age] + 1 : 1;
+
+        const applicationDate = hacker._id
+            .getTimestamp() //
+            .toISOString() // converts Date to "YYYY-MM-DDTHH:mm:ss.sssZ" format
+            .slice(0, 10); // slice(beginIndex, endIndex) extracts string from beginIndex to endIndex, used to convert to "YYYY-MM-DD" format
+
+        stats.applicationDate[applicationDate] = stats.applicationDate[
+            applicationDate
+        ]
+            ? stats.applicationDate[applicationDate] + 1
+            : 1;
     });
     return stats;
 }

tests/hacker.test.js

@@ -1611,6 +1611,7 @@ describe("GET Hacker stats", function() {
                     );
                     res.body.data.stats.should.have.property("shirtSize");
                     res.body.data.stats.should.have.property("age");
+                    res.body.data.stats.should.have.property("applicationDate");
                     done();
                 });
         });