using System.Linq.Expressions;
using Microsoft.AspNetCore.Mvc;

namespace NejCommon.Models;

public class DateOnlyFrame
{
    public DateOnlyFrame()
    {

    }
    public DateOnlyFrame(DateOnly fromDate, DateOnly toDate)
    {
        this.fromDate = fromDate;
        this.toDate = toDate;
    }


    private DateOnly _fromDate = DateOnly.MinValue;
    private DateOnly _toDate = DateOnly.MaxValue;
    public DateOnly fromDate { get { return _fromDate; } set { _fromDate = value; Invalid = false; } }
    public DateOnly toDate { get { return _toDate; } set { _toDate = value; Invalid = false; } }
    [FromServices]
    public bool Invalid { get; private set;} = true;

    public override string ToString()
    {
        var from = (fromDate == DateOnly.MinValue) ? "" : (fromDate.ToString("yyyy-MM-dd"));
        var to = (toDate == DateOnly.MaxValue) ? "" : (toDate.ToString("yyyy-MM-dd"));
        var hyphen = from != "" && to != "" ? "-" : "";
        return $"{from}{hyphen}{to}";
    }

    public static Expression<Func<TType, bool>> Conditional<TType>(Expression<Func<TType, DateOnly>> dateAcessor, DateOnlyFrame frame)
    {
        return e => dateAcessor.Compile()(e) >= frame.fromDate && dateAcessor.Compile()(e) <= frame.toDate;
    }

    public DateTimeFrame ToDateTimeFrame()
    {
        return new DateTimeFrame(fromDate.ToDateTime(TimeOnly.MinValue), toDate.ToDateTime(TimeOnly.MaxValue));
    }
}