Add ServerEFCoreRepository and methods.

ServerManagement/Models/ServersEFCoreRepository.cs

@@ -0,0 +1,80 @@
+using Microsoft.EntityFrameworkCore;
+using ServerManagement.Data;
+using ServerManagement.Models;
+
+namespace ServerManagement;
+
+public class ServersEFCoreRepository
+{
+  private readonly IDbContextFactory<ServerManagementContext> contextFactory;
+  public ServersEFCoreRepository(IDbContextFactory<ServerManagementContext> contextFactory) 
+  {
+    this.contextFactory = contextFactory;
+  }
+
+  public void AddServer(Server server)
+  {
+    using var context = this.contextFactory.CreateDbContext();
+    context.Servers.Add(server);
+
+    context.SaveChanges();
+  }
+
+  public List<Server> GetServers()
+  {
+    using var context = this.contextFactory.CreateDbContext();
+    return context.Servers.ToList();
+  }
+
+  public List<Server> GetServersByCity(string cityName)
+  {
+    using var context = this.contextFactory.CreateDbContext();
+    return context.Servers.Where(s => s.City != null && s.City.ToLower().IndexOf(cityName.ToLower()) >= 0).ToList(); 
+  }
+
+  public Server GetServerById(int id)
+  {
+    using var context = this.contextFactory.CreateDbContext();
+    var server = context.Servers.Find(id);
+
+    if (server is not null) return server;
+    return new Server();
+  }
+
+  public void UpdateServer(int serverId, Server server)
+  {
+    if (server == null) throw new ArgumentNullException(nameof(server));
+    if (serverId != server.Id) return;
+
+    using var context = this.contextFactory.CreateDbContext();
+    var serverToUpdate = context.Servers.Find(serverId);
+
+    if (serverToUpdate is not null)
+    {
+      serverToUpdate.IsOnline = server.IsOnline;
+      serverToUpdate.Name = server.Name;
+      serverToUpdate.City = server.City;
+
+      context.SaveChanges();
+    }
+  }
+
+  public void DeleteServer(int serverId)
+  {
+    using var context = this.contextFactory.CreateDbContext();
+    var server = context.Servers.Find(serverId);
+    if (server is null) return;
+
+    context.Servers.Remove(server);
+    context.SaveChanges();
+  }
+
+  public List<Server> SearchServers(string serverFilter)
+  {
+    using var context = this.contextFactory.CreateDbContext();
+    return context.Servers.Where(s => 
+      s.Name != null &&
+      s.Name.ToLower().IndexOf(serverFilter.ToLower()) >= 0)
+      .ToList();
+  }
+}