using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BAKKA_Editor.Operations
{
    internal abstract class NoteOperation : IOperation
    {
        protected Note Note { get; }
        protected Chart Chart { get; }
        public abstract string Description { get; }

        public NoteOperation(Chart chart, Note item)
        {
            Chart = chart;
            Note = item;
        }

        public abstract void Redo();

        public abstract void Undo();
    }

    internal class InsertNote : NoteOperation
    {
        public override string Description => "Insert note";

        public InsertNote(Chart chart, Note item) : base(chart, item)
        { }

        public override void Redo()
        {
            Chart.Notes.Add(Note);
        }

        public override void Undo()
        {
            Chart.Notes.Remove(Note);
        }
    }

    internal class RemoveNote : NoteOperation
    {
        public override string Description => "Remove note";

        public RemoveNote(Chart chart, Note item) : base(chart, item)
        { }

        public override void Redo()
        {
            Chart.Notes.Remove(Note);
        }

        public override void Undo()
        {
            Chart.Notes.Add(Note);
        }
    }

    internal class EditNote : IOperation
    {
        public string Description => "Edit note";

        protected Note Base { get; }
        protected Note OldNote { get; }
        protected Note NewNote { get; }

        public EditNote(Note baseNote, Note newNote)
        {
            Base = baseNote;
            OldNote = new Note(baseNote);
            NewNote = new Note(newNote);
        }

        public void Redo()
        {
            Base.BeatInfo = new BeatInfo(NewNote.BeatInfo);
            Base.Position = NewNote.Position;
            Base.Size = NewNote.Size;
        }

        public void Undo()
        {
            Base.BeatInfo = new BeatInfo(OldNote.BeatInfo);
            Base.Position = OldNote.Position;
            Base.Size = OldNote.Size;
        }
    }
}