internal async Task <Tuple <Status, string> > TryDeleteModel(string make, string model)
{
Vehicle_Models chosenModel = dBase.Vehicle_Models.FirstOrDefault(id => id.Model_Name == model);
int modelId = chosenModel.Model_ID;
bool types = false,
vehicles = false,
rentals = false;
if (dBase.Vehicle_Types.FirstOrDefault(carModel => carModel.Make_ID == modelId) != null)
{
types = true;
}
if (dBase.Vehicles.FirstOrDefault(carModel => carModel.Vehicle_Types.Make_ID == modelId) != null)
{
vehicles = true;
}
if (dBase.Rentals.FirstOrDefault(carModel => carModel.Vehicle.Vehicle_Types.Make_ID == modelId) != null)
{
rentals = true;
}
if (types || vehicles || rentals)
{
string error = concatErrorString(types, vehicles, rentals);
return(new Tuple <Status, string>(Status.Failure, error));
}
else
{
dBase.Vehicle_Models.Remove(chosenModel);
await dBase.SaveChangesAsync();
return(new Tuple <Status, string>(Status.Success, model + " Deleted"));
}
}
private async Task <Tuple <Status, string> > TryAddModelToDB(string model, int makeID, string make)
{
Vehicle_Models added = dBase.Vehicle_Models.Add(new Vehicle_Models()
{
Model_Name = model, Make_ID = makeID
});
if (added != null)
{
await dBase.SaveChangesAsync();
return(new Tuple <Status, string>(Status.Success, $" {model} Successfully Added To The {make}'s"));
}
else
{
return(new Tuple <Status, string>(Status.Failure, "Something Went Wrong"));
}
}
