Simplified bank money transfer

Server/Entities/Faction.cs

@@ -1,8 +1,11 @@
 using Microsoft.EntityFrameworkCore;
+using reallife_gamemode.Model;
+using reallife_gamemode.Server.Util;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
 using System.Text;
 
 /**
@@ -13,14 +16,28 @@ using System.Text;
 
 namespace reallife_gamemode.Server.Entities
 {
-    public class Faction
+    public class Faction : IBankAccountOwner
     {
         [Key]
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public int Id { get; set; }
         [StringLength(32)]
         public string Name { get; set; }
-        public int BankAccount { get; set; }
         public bool StateOwned { get; set; }
+
+        public IBankAccount GetBankAccount(DatabaseContext databaseContext = null)
+        {
+            if (databaseContext == null)
+            {
+                using (databaseContext = new DatabaseContext())
+                {
+                    return databaseContext.FactionBankAccounts.FirstOrDefault(u => u.FactionId == this.Id);
+                }
+            }
+            else
+            {
+                return databaseContext.FactionBankAccounts.FirstOrDefault(u => u.FactionId == this.Id);
+            }
+        }
     }
 }

Server/Entities/FactionBankAccount.cs

@@ -13,7 +13,7 @@ using System.Text;
 */
 namespace reallife_gamemode.Server.Entities
 {
-    public class FactionBankAccount
+    public class FactionBankAccount : IBankAccount
     {
         [Key]
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]

Server/Entities/User.cs

@@ -16,7 +16,7 @@ using System.Text;
 
 namespace reallife_gamemode.Server.Entities
 {
-    public class User
+    public class User : IBankAccountOwner
     {
         [Key]
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
@@ -28,8 +28,8 @@ namespace reallife_gamemode.Server.Entities
         [StringLength(64)]
         public string Password { get; set; }
         public int LogUserId { get; set; }
-        [Timestamp]
-        public byte[] RegistrationDate { get; set; }
+        [DatabaseGenerated(DatabaseGeneratedOption.Computed)]
+        public DateTime RegistrationDate { get; set; }
 
         [EmailAddress]
         [StringLength(64)]
@@ -131,5 +131,20 @@ namespace reallife_gamemode.Server.Entities
         }
 
         public bool IsAdmin(AdminLevel level) => AdminLevel >= level;
+
+        public IBankAccount GetBankAccount(DatabaseContext databaseContext = null)
+        {
+            if (databaseContext == null)
+            {
+                using (databaseContext = new DatabaseContext())
+                {
+                    return databaseContext.UserBankAccounts.FirstOrDefault(u => u.UserId == this.Id);
+                }
+            }
+            else
+            {
+                return databaseContext.UserBankAccounts.FirstOrDefault(u => u.UserId == this.Id);
+            }
+        }
     }
 }

Server/Entities/UserBankAccount.cs

@@ -17,8 +17,9 @@ using System.Linq;
 
 namespace reallife_gamemode.Server.Entities
 {
-    public class UserBankAccount
+    public class UserBankAccount : IBankAccount
     {
+        [NotMapped]
         private int _balance;
 
         [Key]