xp-dev.com Git - CPE_learningsite/blob - CPE/CPE.App/CPE.App.Api/Helpers/TinCanHelper.cs

   1 using CPE.App.Api.Models;
   2 using CPE.App.Web.Code;
   3 using System;
   4 using System.Collections.Generic;
   5 using System.Linq;
   6 using System.Web;
   7
   8 namespace CPE.App.Api.Helpers
   9 {
  10     public class TinCanHelper
  11     {
  12         public static bool HandleStatement(TinCanStatementModel statement)
  13         {
  14             // statement.Verb.Id=http://adlnet.gov/expapi/verbs/answered
  15             // statement.Verb.Id=http://adlnet.gov/expapi/verbs/experienced
  16
  17             if (statement.Verb.Id.IndexOf("passed")>-1)
  18             {
  19                 Utilities.LogWrapper.Info("[TinCanHelper][HandleStatement] {0} statement.Verb.Id={1}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), statement.Verb.Id);
  20
  21                 //parse statement to db variables
  22                 var email = statement.Actor.Mbox.Substring(7);
  23                 var fname = statement.Actor.Name.Substring(0, statement.Actor.Name.IndexOf(" ") + 1);
  24                 var lname = statement.Actor.Name.Substring(statement.Actor.Name.LastIndexOf(" ") + 1);
  25                 var courseUrl = statement.Object.Id.Substring(statement.Object.Id.LastIndexOf("/") + 1);
  26                 var courseName = statement.Object.Definition.Name.EnUs;
  27
  28                 //cpe has test data with multiple, currently valid purchases of the same course for one user, which causes problems but is not a real-world problem.
  29                 //elucidat tracks all users globally by email address so a tincan statement won't identify a specific purchase here
  30                 //unless we create unique email addy (e.g. email+ticket@mail.com) when originally logging them in to content
  31                 var course = BaseController.Database.PurchasedCourses.FirstOrDefault(c => c.Email == email  && c.ContentUrl == courseUrl && c.CertificateDate == null);
  32                 if (course == null)
  33                 {
  34                     Utilities.LogWrapper.Info("[TinCanHelper][HandleStatement] {0} no action, cert already earned email={1} courseName={2}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), email, courseName);
  35                     //no action, cert already earned
  36                     return true;
  37                 }
  38
  39                 course.CertificateDate = Convert.ToDateTime(statement.Timestamp);
  40                 try
  41                 {
  42                     BaseController.Database.SubmitChanges();
  43                 }
  44                 catch (Exception exception)
  45                 {
  46                     Utilities.LogWrapper.Error("[TinCanHelper][HandleStatement] {0} email={1} courseName={2} exception={3}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), email, courseName, exception.ToString());
  47                 }
  48
  49                 var done = SendEmailHelper.SendCertificateEmail(course);
  50
  51                 Utilities.LogWrapper.Info("[TinCanHelper][HandleStatement] {0} cert sent email={1} courseName={2}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), email, courseName);
  52
  53                 //umm why am i not returning done here?
  54                 return true;
  55             }
  56
  57
  58             if (statement.Verb.Id.IndexOf("failed") > -1)
  59             {
  60                 Utilities.LogWrapper.Info("[TinCanHelper][HandleStatement] {0} statement.Verb.Id={1}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), statement.Verb.Id);
  61
  62                 //parse statement to db variables
  63                 var email = statement.Actor.Mbox.Substring(7);
  64                 var fname = statement.Actor.Name.Substring(0, statement.Actor.Name.IndexOf(" ") + 1);
  65                 var lname = statement.Actor.Name.Substring(statement.Actor.Name.LastIndexOf(" ") + 1);
  66                 var courseUrl = statement.Object.Id.Substring(statement.Object.Id.LastIndexOf("/") + 1);
  67                 var courseName = statement.Object.Definition.Name.EnUs;
  68
  69                 //only logging failed attempts prior to earning a cert
  70                 //selecting first record for a user for a course that is not expired. To allow for if a user fails to earn a cert within a year and re-purchases course
  71
  72                 var course = BaseController.Database.PurchasedCourses.FirstOrDefault(c => c.Email == email && c.ContentUrl == courseUrl && c.CertificateDate == null && ((c.PurchaseDate).AddYears(1)) > DateTime.UtcNow);
  73                 if (course == null)
  74                 {
  75                     //no action, cert already earned
  76                     return true;
  77                 }
  78
  79                 Utilities.LogWrapper.Info("[TinCanHelper][HandleStatement] {0} course.Ticket={1}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), course.Ticket);
  80
  81                 if (!course.FailedAttempts.HasValue)
  82                 {
  83                     course.FailedAttempts = 0;
  84                 }
  85                 course.FailedAttempts++;
  86                 try
  87                 {
  88                     BaseController.Database.SubmitChanges();
  89                 }
  90                 catch (Exception exception)
  91                 {
  92                     Utilities.LogWrapper.Error("[TinCanHelper][HandleStatement] {0} email={1} courseName={2} exception={3}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), email, courseName, exception.ToString());
  93                 }
  94
  95                 Utilities.LogWrapper.Info("[TinCanHelper][HandleStatement] {0} failure recorded email={1} courseName={2}", DateTime.UtcNow.ToString("yyyyMMdd_HHmmss"), email, courseName);
  96
  97                 return true;
  98             }
  99             return true;
 100         }
 101     }
 102 }