public static void Main()
{
var exit = false;
while (!exit)
{
Console.WriteLine("What do you want to do?\n[new|list|update|delete|exit] [dog|person|ownership]");
var command = Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries);
Type entityType;
object entity;
using var dbContext = new DogFarmDbContext();
switch (command[0])
{
case "new":
entityType = GetEntityType();
entity = Activator.CreateInstance(entityType);
SetPropertiesOrSave(entity);
dbContext.Add(entity);
dbContext.SaveChanges();
break;
case "list":
entityType = GetEntityType();
var entities = (IEnumerable)typeof(DogFarmDbContext).GetMethod(nameof(DogFarmDbContext.Set)).MakeGenericMethod(entityType).Invoke(dbContext, null);
if (entities.Cast <object>().Count() == 0)
{
Console.WriteLine($"No entities stored of type {entityType}.");
}
else
{
foreach (var item in entities)
{
Console.WriteLine(item);
}
}
break;
case "update":
entityType = GetEntityType();
entity = dbContext.Find(entityType, ReadId());
SetPropertiesOrSave(entity);
dbContext.SaveChanges();
break;
case "delete":
entityType = GetEntityType();
entity = dbContext.Find(entityType, ReadId());
dbContext.Remove(entity);
dbContext.SaveChanges();
break;
case "exit":
exit = true;
break;
default:
Console.WriteLine($"Unknown command: '{command}'.");
break;
}
private static void DeleteDog(int dogId)
{
using var dbContext = new DogFarmDbContext();
var dog = dbContext.Dogs.Find(dogId);
dbContext.Dogs.Remove(dog);
dbContext.SaveChanges();
}
private static void UpdateDogBirthDate(int dogId, DateTime?birthDate)
{
using var dbContext = new DogFarmDbContext();
var dog = dbContext.Dogs.Find(dogId);
dog.BirthDate = birthDate;
dbContext.SaveChanges();
}
private static void PrintDogs()
{
using var dbContext = new DogFarmDbContext();
var dogs = dbContext.Dogs.ToList();
if (dogs.Count == 0)
{
Console.WriteLine("No dogs are stored in the database.");
}
else
{
foreach (var dog in dogs)
{
Console.WriteLine(dog);
}
}
Console.WriteLine();
}
private static void AddDogToDatabase(Dog newDog)
{
using var dbContext = new DogFarmDbContext();
dbContext.Dogs.Add(newDog);
dbContext.SaveChanges();
}