private bool ValidateRentalDetails(BoatRental boatRental)
{
using (_dbContext)
{
var result = _dbContext.Boats.FirstOrDefault(x => x.Id == boatRental.BoatId);
if (result == null)
{
throw new Exception("Boat ID does not exist");
}
var availableToRent = _dbContext.BoatRentals.FirstOrDefault(x => x.BoatId == boatRental.BoatId && x.EndTime > boatRental.EndTime);
if (availableToRent != null)
{
throw new Exception("Boat Id is not available for rent at this moment, it is already rented to other user");
}
}
if (string.IsNullOrWhiteSpace(boatRental.CustomerName))
{
throw new Exception("Customer Name required");
}
if (boatRental.EndTime <= boatRental.StartTime)
{
throw new Exception("End time can't be less than or equal to Start time");
}
return(true);
}
public async Task <BoatRental> RentBoat(int boatId, string customerName, DateTime From)
{
BoatRental boatRental = new BoatRental
{
BoatId = boatId,
CustomerName = customerName,
StartTime = From,
EndTime = DateTime.MaxValue
};
if (ValidateRentalDetails(boatRental))
{
using (_dbContext)
{
await _dbContext.BoatRentals.AddAsync(boatRental);
await _dbContext.SaveChangesAsync();
return(boatRental);
}
}
return(null);
}
