using System;
using Spectre.Console.Rendering;

namespace Spectre.Console
{
    /// <summary>
    /// Represents a grid column.
    /// </summary>
    public sealed class GridColumn : IColumn, IHasDirtyState
    {
        private bool _isDirty;
        private int? _width;
        private bool _noWrap;
        private Padding? _padding;
        private Justify? _alignment;

        /// <inheritdoc/>
        bool IHasDirtyState.IsDirty => _isDirty;

        /// <summary>
        /// Gets or sets the width of the column.
        /// If <c>null</c>, the column will adapt to it's contents.
        /// </summary>
        public int? Width
        {
            get => _width;
            set => MarkAsDirty(() => _width = value);
        }

        /// <summary>
        /// Gets or sets a value indicating whether wrapping of
        /// text within the column should be prevented.
        /// </summary>
        public bool NoWrap
        {
            get => _noWrap;
            set => MarkAsDirty(() => _noWrap = value);
        }

        /// <summary>
        /// Gets or sets the padding of the column.
        /// Vertical padding (top and bottom) is ignored.
        /// </summary>
        public Padding? Padding
        {
            get => _padding;
            set => MarkAsDirty(() => _padding = value);
        }

        /// <summary>
        /// Gets or sets the alignment of the column.
        /// </summary>
        public Justify? Alignment
        {
            get => _alignment;
            set => MarkAsDirty(() => _alignment = value);
        }

        /// <summary>
        /// Gets a value indicating whether the user
        /// has set an explicit padding for this column.
        /// </summary>
        internal bool HasExplicitPadding => Padding != null;

        private void MarkAsDirty(Action action)
        {
            action();
            _isDirty = true;
        }
    }
}