From 3097e6e4eab26b92082b09cfa377ec58e6ef35da Mon Sep 17 00:00:00 2001
From: mingyuanc <cmingyuan123@gmail.com>
Date: Wed, 3 Apr 2024 23:40:18 +0800
Subject: [PATCH] Finish course migration

---
 .../client/scripts/sql/DataMigrationForCourseSql.java | 11 ++++++++---
 .../java/teammates/client/scripts/sql/SeedDb.java     |  7 ++++++-
 .../client/scripts/sql/VerifyCourseAttributes.java    |  5 +++--
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/client/java/teammates/client/scripts/sql/DataMigrationForCourseSql.java b/src/client/java/teammates/client/scripts/sql/DataMigrationForCourseSql.java
index 962d82b4225a..beef38dff8d0 100644
--- a/src/client/java/teammates/client/scripts/sql/DataMigrationForCourseSql.java
+++ b/src/client/java/teammates/client/scripts/sql/DataMigrationForCourseSql.java
@@ -1,5 +1,8 @@
 package teammates.client.scripts.sql;
 
+import java.time.Duration;
+import java.time.Instant;
+
 import com.googlecode.objectify.cmd.Query;
 
 import teammates.common.util.HibernateUtil;
@@ -12,6 +15,8 @@
 public class DataMigrationForCourseSql extends
         DataMigrationEntitiesBaseScriptSql<teammates.storage.entity.Course, teammates.storage.sqlentity.Course> {
 
+    private static final int HOURS_OFFSET = 1;
+
     public static void main(String[] args) {
         new DataMigrationForCourseSql().doOperationRemotely();
     }
@@ -50,9 +55,9 @@ protected void migrateEntity(Course oldCourse) throws Exception {
                 oldCourse.getName(),
                 oldCourse.getTimeZone(),
                 oldCourse.getInstitute());
-        newCourse.setCreatedAt(oldCourse.getCreatedAt());
-        newCourse.setDeletedAt(oldCourse.getDeletedAt());
-
+        if (oldCourse.getDeletedAt() != null) {
+            newCourse.setDeletedAt(Instant.now().plus(Duration.ofHours(HOURS_OFFSET)));
+        }
         saveEntityDeferred(newCourse);
     }
 }
diff --git a/src/client/java/teammates/client/scripts/sql/SeedDb.java b/src/client/java/teammates/client/scripts/sql/SeedDb.java
index 25ed029a5e4c..76c4c7cd4d38 100644
--- a/src/client/java/teammates/client/scripts/sql/SeedDb.java
+++ b/src/client/java/teammates/client/scripts/sql/SeedDb.java
@@ -119,12 +119,17 @@ private void seedCourse() {
                 log(String.format("Seeded %d %% of new sets of entities",
                         (int) (100 * ((float) i / (float) MAX_ENTITY_SIZE))));
             }
+
+            Random rand = new Random();
+
             try {
                 String courseName = String.format("Course %s", i);
                 String courseInstitute = String.format("Institute %s", i);
                 String courseTimeZone = String.format("Time Zone %s", i);
                 Course course = new Course(UUID.randomUUID().toString(), courseName, courseTimeZone, courseInstitute,
-                        getRandomInstant(), getRandomInstant(), false);
+                        getRandomInstant(),
+                        rand.nextInt(3) > 1 ? null : getRandomInstant(), // set deletedAt randomly at 25% chance
+                        false);
                 ofy().save().entities(course).now();
             } catch (Exception e) {
                 log(e.toString());
diff --git a/src/client/java/teammates/client/scripts/sql/VerifyCourseAttributes.java b/src/client/java/teammates/client/scripts/sql/VerifyCourseAttributes.java
index 37d7c556828a..8883383ffa64 100644
--- a/src/client/java/teammates/client/scripts/sql/VerifyCourseAttributes.java
+++ b/src/client/java/teammates/client/scripts/sql/VerifyCourseAttributes.java
@@ -32,8 +32,9 @@ public boolean equals(teammates.storage.sqlentity.Course sqlEntity, Course datas
                     && sqlEntity.getName().equals(datastoreEntity.getName())
                     && sqlEntity.getTimeZone().equals(datastoreEntity.getTimeZone())
                     && sqlEntity.getInstitute().equals(datastoreEntity.getInstitute())
-                    && sqlEntity.getCreatedAt().equals(datastoreEntity.getCreatedAt())
-                    && sqlEntity.getDeletedAt().equals(datastoreEntity.getDeletedAt());
+                    && (datastoreEntity.getDeletedAt() == null
+                            ? sqlEntity.getDeletedAt() == null
+                            : sqlEntity.getDeletedAt() != null);
         } catch (IllegalArgumentException iae) {
             return false;
         }