namespace DelftTools.Utils.Validation
{
    public class ValidationIssue
    {
        private object viewData;

        public ValidationIssue(object subject, ValidationSeverity severity, string message, object viewdata = null)
        {
            Severity = severity;
            Message = message;
            Subject = subject;
            ViewData = viewdata;
        }

        public ValidationSeverity Severity { get; private set; }
        public string Message { get; private set; }

        public object Subject { get; set; }

        public object ViewData
        {
            get
            {
                return viewData ?? Subject;
            }
            private set
            {
                viewData = value;
            }
        }

        public override string ToString()
        {
            return "[" + Severity + "] " + Subject + ": " + Message;
        }

        public override bool Equals(object obj)
        {
            return Equals(obj as ValidationIssue);
        }

        private bool Equals(ValidationIssue other)
        {
            if (other == null)
            {
                return false;
            }
            if (ReferenceEquals(this, other))
            {
                return true;
            }
            if (Severity != other.Severity)
            {
                return false;
            }
            if (!Equals(Subject, other.Subject))
            {
                return false;
            }
            if (!Equals(Message, other.Message))
            {
                return false;
            }
            return true;
        }
    }
}