/// <summary>
/// Calculate the total cost of the rent
/// </summary>
/// <param name="bikesCount">Number of bikes to rent</param>
/// <param name="timeUnit">Time unit of the rent</param>
/// <param name="timeValue">Time value</param>
/// <param name="prices">List of prices</param>
/// <returns>Total cost of the rent</returns>
private decimal CalculateTotalCost(int bikesCount, Time.UnitsEnum timeUnit, int timeValue, IList <IPrice> prices)
{
// Take de price for the timeUnit received
var price = prices.FirstOrDefault(p => p.TimeUnit.Equals(timeUnit));
if (price == null)
{
var errorMessage = string.Format(NoPriceDefinedMessage, timeUnit);
throw new ArgumentException(errorMessage, "price");
}
return(bikesCount * timeValue * price.Amount);
}
/// <summary>
/// Initializes a new instance of the <see cref="Rental"/> class.
/// </summary>
/// <param name="bikesCount">Number of bikes to rent</param>
/// <param name="startingAt">Starting date and time</param>
/// <param name="timeUnit">Time unit</param>
/// <param name="timeValue">Time value</param>
/// <param name="prices">List of prices</param>
/// <param name="promotions">List of promotions</param>
public Rental(int bikesCount, DateTime startingAt, Time.UnitsEnum timeUnit, int timeValue, IList <IPrice> prices, IList <IPromotion> promotions)
{
Check.NotNull(prices, "prices");
this.BikesCount = Check.NotZeroOrNegative(bikesCount, "bikesCount");
this.StartingAt = startingAt;
this.TimeUnit = timeUnit;
this.TimeValue = Check.NotZeroOrNegative(timeValue, "timeValue");
this.TotalCost = this.CalculateTotalCost(bikesCount, timeUnit, timeValue, prices);
this.TotalDiscount = this.CalculateTotalDiscount(this.TotalCost, bikesCount, promotions);
}
/// <summary>
/// Initializes a new instance of the <see cref="Rental"/> class with default startingAt date.
/// </summary>
/// <param name="bikesCount">Number of bikes to rent</param>
/// <param name="timeUnit">Time unit</param>
/// <param name="timeValue">Time value</param>
/// <param name="prices">List of prices</param>
/// <param name="promotions">List of promotions</param>
public Rental(int bikesCount, Time.UnitsEnum timeUnit, int timeValue, IList <IPrice> prices, IList <IPromotion> promotions)
: this(bikesCount, DateTime.UtcNow, timeUnit, timeValue, prices, promotions)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Price"/> class.
/// </summary>
/// <param name="timeUnit">Time unit of the price</param>
/// <param name="amount">Amount of the price</param>
public Price(Time.UnitsEnum timeUnit, decimal amount)
{
this.TimeUnit = timeUnit;
this.Amount = Check.NotNegative(amount, "amount");
}
