using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using ChubykinaComponents.Exceptions;

namespace ChubykinaComponents.Components
{
    public partial class UserDatePicker : UserControl
    {
        public UserDatePicker()
        {
            InitializeComponent();
        }

        public event Action<DateTime> DateChange;
        private bool lowBoundrySet = false;
        private bool highBoundrySet = false;

        public bool BoundriesSet { get { return lowBoundrySet && highBoundrySet; } }

        public DateTime? dateFrom
        {
            get
            {
                return lowBoundrySet ? dateTimePicker.MinDate : null;
            }
            set
            {
                if (value.HasValue)
                {
                    dateTimePicker.MinDate = value.Value;
                    lowBoundrySet = true;
                }
            }
        }

        public DateTime? dateTo
        {
            get
            {
                return highBoundrySet ? dateTimePicker.MaxDate : null;
            }
            set
            {
                if (value.HasValue)
                {
                    dateTimePicker.MaxDate = value.Value;
                    highBoundrySet = true;
                }
            }
        }

        public DateTime? Value
        {
            get
            {
                if (!lowBoundrySet || !highBoundrySet)
                {
                    throw new DateBoundsNotSetException("Date bounds are not set.");
                }
                return dateTimePicker.Value;
            }
            set
            {
                if (lowBoundrySet && highBoundrySet && value.HasValue && value.Value >= dateFrom && value.Value <= dateTo) dateTimePicker.Value = value.Value;
            }
        }

        private void dateTimePicker_ValueChanged(object sender, EventArgs e)
        {
            DateChange?.Invoke(dateTimePicker.Value);
        }
    }
}