namespace Transport;

/// <summary>
///     Represents management of all available vehicles and performed rides.
/// </summary>
public sealed class TravelManagement
{
    /// <summary>
    ///     The max. distance a rickshaw can travel during a single rental
    /// </summary>
    public const double MaxRickshawDistance = 50D;

    private readonly List<Vehicle> _vehicles;

    /// <summary>
    ///     Creates a new instance of the management
    /// </summary>
    public TravelManagement()
    {
        _vehicles = [];
    }

    /// <summary>
    ///     Loads the available vehicles from the Excel file at the given location
    /// </summary>
    /// <param name="filePath">Path to the workbook</param>
    /// <returns>True if loading was successful; false otherwise</returns>
    public bool InitializeFromFile(string filePath)
    {
        // TODO
        
        var workbook = new XLWorkbook(filePath);
        var rickshawSheet = workbook.Worksheet(Rickshaw.WorksheetName);
        var carSheet = workbook.Worksheet(Car.WorksheetName);

        // TODO
        return false;
    }

    /// <summary>
    ///     Attempts to rent a vehicle for the given distance and customer.
    ///     Important: the distance is (unrealistically) fixed: it will be
    ///     exactly the given value, neither shorter nor longer.
    ///     If a <see cref="Rickshaw"/> is requested but the distance exceeds <see cref="MaxRickshawDistance"/>
    ///     a <see cref="Car"/> is selected instead.
    ///     Only vehicles currently available (= not on a ride) are considered.
    /// </summary>
    /// <param name="customerName">Name of the customer who desires to rent a vehicle</param>
    /// <param name="distance">The distance for which the vehicle is rented</param>
    /// <typeparam name="TPreferredVehicle">Desired vehicle type</typeparam>
    /// <returns>The rented vehicle, if a matching one has been found</returns>
    public Vehicle? RentVehicle<TPreferredVehicle>(string customerName, double distance)
        where TPreferredVehicle : Vehicle
    {
        // TODO
        return null;
    }

    /// <summary>
    ///     Creates an Excel workbook which contains a worksheet for every vehicle.
    ///     Each worksheet contains the detail travel log of all rentals for one vehicle.
    /// </summary>
    /// <returns>Workbook containing travel log of all vehicles</returns>
    public IXLWorkbook GetTravelLog()
    {
        IXLWorkbook workbook = new XLWorkbook();
        
        // TODO

        return workbook;
    }
}