using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace MultiWheelC.TrajectoryPlanning.EMPlanner;

public sealed class EmTrajectory
{
    public EmTrajectory(EmTrajectoryMetadata metadata, IReadOnlyList<EmTrajectoryPoint> points)
    {
        if (metadata == null)
            throw new ArgumentNullException(nameof(metadata));
        if (points == null)
            throw new ArgumentNullException(nameof(points));
        if (points.Count == 0)
            throw new ArgumentException("A published trajectory requires at least one point.", nameof(points));

        var copy = new List<EmTrajectoryPoint>(points.Count);
        for (int index = 0; index < points.Count; index++)
        {
            if (points[index] == null)
                throw new ArgumentException("Trajectory points cannot contain null values.", nameof(points));
            copy.Add(points[index]);
        }

        Metadata = metadata;
        Points = new ReadOnlyCollection<EmTrajectoryPoint>(copy);
    }

    public EmTrajectoryMetadata Metadata { get; }

    public IReadOnlyList<EmTrajectoryPoint> Points { get; }
}