using System;

namespace Code.Lab6
{
    [Serializable]
    public class Edge : IComparable<Edge>
    {
        public float cost;
        public readonly Vertex Vertex;

        public Edge(Vertex vertex = null, float cost = 1f)
        {
            Vertex = vertex;
            this.cost = cost;
        }

        public int CompareTo(Edge other)
        {
            var result = cost - other.cost;
            var idA = Vertex.GetInstanceID();
            var idB = other.Vertex.GetInstanceID();
            if (idA == idB) return 0;
            return (int)result;
        }

        public bool Equals(Edge other)
        {
            return other.Vertex.id == Vertex.id;
        }

        public override bool Equals(object obj)
        {
            var other = (Edge)obj;
            return other != null && other.Vertex.id == Vertex.id;
        }

        public override int GetHashCode()
        {
            return Vertex.GetHashCode();
        }
    }
}