[Update] Implementation of Tutor class

LangLang/Core/Model/Tutor.cs

@@ -1,43 +1,74 @@
-using System;
+using LangLang.Core.Repository.Serialization;
+using LangLang.Core.Model;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using System.Threading.Tasks;
-using System.Windows.Input;
-using LangLang.Core.Model;
+using System.Data;
+
 namespace LangLang.Core.Model
 {
-    class Tutor
+    public class Tutor : ISerializable
     {
-        // Profile attribute of type Profile
         private Profile _profile { get; set; }
         private Dictionary<string, LanguageLevel> _languageSkills { get; set; }
+        private DateTime _employmentDate { get; set; }
 
-        // Constructor
-        public Tutor()
-        {
-            // Initialize empty profile and language skills
-            _profile = new Profile();
-            _profile.Role = UserType.Tutor;
-            _languageSkills = new Dictionary<string, LanguageLevel>();
-        }
-        public Tutor(Profile profile, Dictionary<string, LanguageLevel> languageSkills)
-        {
-            _profile = profile;
+        public Tutor(int id, string name, string lastName, UserGender gender, DateTime dateOfBirth, string phoneNumber, string email, string password, UserType role, DateTime employmentDate, Dictionary<string, LanguageLevel> languageSkills) {
+            _profile = new Profile(id, name, lastName, gender, dateOfBirth, phoneNumber, email, password, role);
+            _employmentDate = employmentDate;
             _languageSkills = languageSkills;
-        }
+            }
 
-        //Getters and setters
-        public Profile Profile
+        public void FromCSV(string[] values)
         {
-            get { return _profile; }
-            private set { _profile = value; }
+            _profile = new Profile(values[0], values[1], values[2], values[3], values[4], values[5], values[6], values[7], values[8]);
+            DateTime employmentDate;
+
+            if (!DateTime.TryParseExact(values[9], "yyyy-MM-dd", null, System.Globalization.DateTimeStyles.None, out employmentDate))
+            {
+                throw new FormatException("Date is not in the correct format.");
+            }
+            _employmentDate = employmentDate;
+
+            for (int i = 10; i < values.Length; i++)
+            {
+                string[] languageSkill = values[i].Split(',');
+
+                if (languageSkill.Length != 2)
+                {
+                    throw new FormatException("Language and skill pair is not in the correct format.");
+                }
+                LanguageLevel level;
+                if (Enum.TryParse(languageSkill[1], out level))
+                {
+                    _languageSkills.Add(languageSkill[0], level);
+                }
+            }
         }
-        public Dictionary<string, LanguageLevel> LanguageSkills
+
+        public string[] ToCSV()
         {
-            get { return _languageSkills; }
-            private set { _languageSkills = value; }
+            string[] csvValues =
+             {
+                _profile.ToString(),
+                _employmentDate.ToString("yyyy-MM-dd"),
+                DictToCSV(_languageSkills)
+            };
+
+            return csvValues;
+        }
+
+        public string DictToCSV(Dictionary<string, LanguageLevel> skills){
+            StringBuilder sb = new StringBuilder();
+            var length = skills.Count();
+            foreach (var skill in skills){
+                sb.Append(skill.Key).Append(",").Append(skill.Value);
+                if (--length>0) sb.Append("|");
+            }
+            return sb.ToString();
         }
+
         /*
         public List<Course> GetCourses(ref Dictionary<int, Course> courses)
         {
@@ -63,3 +94,4 @@ public List<ExamSlot> GetExamSlots(ref Dictionary<int, ExamSlot> examSlots)
         //add searchCourses and searchExamSlots
     }
 }
+