From 75e4a5bf284d49c384f91b3f84bd326bcd5b463d Mon Sep 17 00:00:00 2001
From: DusicaPesic <130140285+DusicaPesic@users.noreply.github.com>
Date: Sat, 30 Mar 2024 22:30:58 +0100
Subject: [PATCH 1/2] [Add] SearchExamSlots to ExamSlotController

Added implementation of the SearchExamSlots method, which filters exam slots based on the provided criteria, such as exam date, course language, and language level.
---
 LangLang/Core/Controller/ExamSlotController.cs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/LangLang/Core/Controller/ExamSlotController.cs b/LangLang/Core/Controller/ExamSlotController.cs
index a12108db..0e149e5a 100644
--- a/LangLang/Core/Controller/ExamSlotController.cs
+++ b/LangLang/Core/Controller/ExamSlotController.cs
@@ -6,6 +6,7 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using static System.Reflection.Metadata.BlobBuilder;
 
 namespace LangLang.Core.Controller
 {
@@ -78,5 +79,21 @@ public bool IsExamSlotAvailable(ExamSlot examSlot)
             return true;
         }
 
+        // Method to search exam slots by tutor and criteria
+        public List<ExamSlot> SearchExamSlots(int tutorId, CourseController courses, DateTime examDate, string courseLanguage, LanguageLevel languageLevel)
+        {
+            // Retrieve all exam slots created by the specified tutor
+            List<ExamSlot> examSlotsByTutor = this.GetExamSlotsByTutor(tutorId, courses);
+
+            // Apply search criteria if they are not null
+            List<ExamSlot> filteredExamSlots = examSlotsByTutor.Where(exam =>
+                (examDate == null || exam.ExamDateTime.Date == examDate.Date) && 
+                (courseLanguage == null || courses.GetAllCourses()[exam.CourseId].Language == courseLanguage) && 
+                (languageLevel == null || courses.GetAllCourses()[exam.CourseId].Level == languageLevel)
+            ).ToList();
+
+            return filteredExamSlots;
+        }
+
     }
 }

From 31cd033a79a42415b58cc54065964a2ad5f0f9ea Mon Sep 17 00:00:00 2001
From: DusicaPesic <130140285+DusicaPesic@users.noreply.github.com>
Date: Sat, 30 Mar 2024 22:41:16 +0100
Subject: [PATCH 2/2] [Update] Delete method in ExamSlotController

Updated Delete method in ExamSlotController to allow deletion only if there are more than 2 weeks before exam date, and to indicate if deletion was allowed (succesful).
---
 LangLang/Core/Controller/ExamSlotController.cs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/LangLang/Core/Controller/ExamSlotController.cs b/LangLang/Core/Controller/ExamSlotController.cs
index 0e149e5a..0fc7f2c1 100644
--- a/LangLang/Core/Controller/ExamSlotController.cs
+++ b/LangLang/Core/Controller/ExamSlotController.cs
@@ -28,12 +28,28 @@ public void Add(ExamSlot examSlot)
         {
             _examSlots.AddExamSlot(examSlot);
         }
-
+        /*
         public void Delete(int examSlotId)
         {
             _examSlots.RemoveExamSlot(examSlotId);
         }
+        */
 
+        //returns true if removal was allowed (succesful) or false if removal wasn't allowed (unsuccesful)
+        public bool Delete(int examSlotId)
+        {
+            ExamSlot examSlot = _examSlots.GetAllExamSlots()[examSlotId];
+            //should use const variable instead of 14
+            if ((examSlot.ExamDateTime - DateTime.Now).TotalDays >= 14)
+            {
+                _examSlots.RemoveExamSlot(examSlotId);
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
         public void Subscribe(IObserver observer)
         {
             _examSlots.Subscribe(observer);