inabox/InABox.Core/DigitalForms/Layouts/Fields/DFLayoutTimeField/DFLayoutTimeFieldProperties.cs

using System;
using System.Globalization;

namespace InABox.Core
{
    public class DFLayoutTimeFieldProperties : DFLayoutFieldProperties<TimeSpan, TimeSpan?>
    {
        
        [EditorSequence(-995)]
        [TimeOfDayEditor]
        public override TimeSpan Default { get; set; }
        
        public DFLayoutTimeFieldProperties()
        {
            Format = "hh:mm";
        }

        public string Format { get; set; }

        public override string FormatValue(TimeSpan? value)
        {
            var time = value ?? default;

            return string.IsNullOrWhiteSpace(Format) || string.Equals(Format, "hh:mm")
                ? Math.Truncate(time.TotalHours).ToString("#00") + ":" + time.Minutes.ToString("D2")
                : string.Format("{0:" + Format.Replace(":", "\\:") + "}", time);
        }

        public override void SerializeValue(DFSaveStorageEntry entry, TimeSpan? value)
        {
            if (value.HasValue)
            {
                entry.SetValue(value.Value.ToString("c"));
            }
        }

        public override TimeSpan? DeserializeValue(DFLoadStorageEntry entry)
        {
            var value = entry.GetValue();
            if (value is TimeSpan time)
                return time;
            if (TimeSpan.TryParseExact(value as string, "c", CultureInfo.InvariantCulture, TimeSpanStyles.None, out var result))
                return result;
            return null;
        }

        public override TimeSpan GetValue(TimeSpan? value)
        {
            return value ?? Default;
        }

        protected override void LoadProperties()
        {
            base.LoadProperties();
            Format = GetProperty("Format", "hh:mm");
        }

        protected override void SaveProperties()
        {
            base.SaveProperties();
            SetProperty("Format", Format);
        }
    }
}