👔 Implement PlayerDbManager

Sources/Data/EF/Players/PlayerDBManager.cs

@@ -6,6 +6,7 @@ namespace Data.EF.Players
     public sealed class PlayerDbManager : IManager<PlayerEntity>
     {
         private readonly DiceAppDbContext db;
+
         public PlayerDbManager(DiceAppDbContext db)
         {
             this.db = db;
@@ -16,36 +17,66 @@ namespace Data.EF.Players
             if (db.Players!.Where(entity => entity.Name == toAdd.Name).Any())
             {
                 throw new ArgumentException("this username is already taken", nameof(toAdd));
+            }
+            if (toAdd is null)
+            {
+                throw new ArgumentNullException(nameof(toAdd), "param should not be null");
+            }
+            if (string.IsNullOrWhiteSpace(toAdd.Name))
+            {
+                throw new ArgumentException("Name property should not be null or whitespace", nameof(toAdd));
             }
             EntityEntry ee = db.Players!.Add(toAdd);
             db.SaveChanges();
             return (PlayerEntity)ee.Entity;
         }
 
-
         public IEnumerable<PlayerEntity> GetAll()
         {
             return db.Players!.AsEnumerable();
         }
 
+        /// <summary>
+        /// Calls First(), which will throw an exception if no player with such name exists
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns></returns>
         public PlayerEntity GetOneByName(string name)
         {
-            throw new NotImplementedException();
+            if(string.IsNullOrWhiteSpace(name))
+            {
+                throw new ArgumentException("Name property should not be null or whitespace", nameof(name));
+            }
+            return db.Players!.First(p => p.Name == name);
         }
 
         public void Remove(PlayerEntity toRemove)
-        {
-            throw new NotImplementedException();
+        {
+            if (toRemove is null)
+            {
+                throw new ArgumentNullException(nameof(toRemove), "param should not be null");
+            }
+            db.Players!.Remove(toRemove);
+            db.SaveChanges();
         }
 
         public PlayerEntity Update(PlayerEntity before, PlayerEntity after)
-        {
-            throw new NotImplementedException();
+        {
+            EntityEntry ee = db.Players!.Update(before);
+            before.Name = after.Name;
+            db.SaveChanges();
+            return (PlayerEntity)ee.Entity;
+
         }
 
+        /// <summary>
+        /// Calls First(), which will throw an exception if no player with such ID exists
+        /// </summary>
+        /// <param name="ID"></param>
+        /// <returns></returns>
         public PlayerEntity GetOneByID(Guid ID)
-        {
-            throw new NotImplementedException();
+        {
+           return db.Players!.First(p => p.ID == ID);
         }
     }
 }

Sources/Data/EF/Players/PlayerDbManager.cs

@@ -6,6 +6,7 @@ namespace Data.EF.Players
     public sealed class PlayerDbManager : IManager<PlayerEntity>
     {
         private readonly DiceAppDbContext db;
+
         public PlayerDbManager(DiceAppDbContext db)
         {
             this.db = db;
@@ -16,36 +17,66 @@ namespace Data.EF.Players
             if (db.Players!.Where(entity => entity.Name == toAdd.Name).Any())
             {
                 throw new ArgumentException("this username is already taken", nameof(toAdd));
+            }
+            if (toAdd is null)
+            {
+                throw new ArgumentNullException(nameof(toAdd), "param should not be null");
+            }
+            if (string.IsNullOrWhiteSpace(toAdd.Name))
+            {
+                throw new ArgumentException("Name property should not be null or whitespace", nameof(toAdd));
             }
             EntityEntry ee = db.Players!.Add(toAdd);
             db.SaveChanges();
             return (PlayerEntity)ee.Entity;
         }
 
-
         public IEnumerable<PlayerEntity> GetAll()
         {
             return db.Players!.AsEnumerable();
         }
 
+        /// <summary>
+        /// Calls First(), which will throw an exception if no player with such name exists
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns></returns>
         public PlayerEntity GetOneByName(string name)
         {
-            throw new NotImplementedException();
+            if(string.IsNullOrWhiteSpace(name))
+            {
+                throw new ArgumentException("Name property should not be null or whitespace", nameof(name));
+            }
+            return db.Players!.First(p => p.Name == name);
         }
 
         public void Remove(PlayerEntity toRemove)
-        {
-            throw new NotImplementedException();
+        {
+            if (toRemove is null)
+            {
+                throw new ArgumentNullException(nameof(toRemove), "param should not be null");
+            }
+            db.Players!.Remove(toRemove);
+            db.SaveChanges();
         }
 
         public PlayerEntity Update(PlayerEntity before, PlayerEntity after)
-        {
-            throw new NotImplementedException();
+        {
+            EntityEntry ee = db.Players!.Update(before);
+            before.Name = after.Name;
+            db.SaveChanges();
+            return (PlayerEntity)ee.Entity;
+
         }
 
+        /// <summary>
+        /// Calls First(), which will throw an exception if no player with such ID exists
+        /// </summary>
+        /// <param name="ID"></param>
+        /// <returns></returns>
         public PlayerEntity GetOneByID(Guid ID)
-        {
-            throw new NotImplementedException();
+        {
+           return db.Players!.First(p => p.ID == ID);
         }
     }
 }