openscad-graph-editor

using System.Collections.Generic;
using System.Linq;
using OpenScadGraphEditor.Library;
using OpenScadGraphEditor.Utils;
using Serilog;

namespace OpenScadGraphEditor.Refactorings
{
    /// <summary>
    /// This class represents a context in which refactoring operations can work. It provides editable
    /// graphs for refactorings to work on and ensures that after the refactorings are applied any modified
    /// state is updated in the UI.
    /// </summary>
    public class RefactoringContext
    {
        public ScadProject Project { get; }
        public RefactoringData Data { get; } = new RefactoringData();

        private readonly Queue<Refactoring> _refactorings = new Queue<Refactoring>();

        public RefactoringContext(ScadProject project)
        {
            Project = project;
        }

        public void PerformRefactorings(IEnumerable<Refactoring> refactorings)
        {
            _refactorings.Clear();
            Data.Clear();
            refactorings.ForAll(_refactorings.Enqueue);


            while (_refactorings.Any())
            {
                var refactoring = _refactorings.Dequeue();
                Log.Information("Performing refactoring {Refactoring}", refactoring.GetType().Name);
                refactoring.PerformRefactoring(this);
            }
        }

        /// <summary>
        /// Can be called by refactorings, to run another refactoring. If the refactoring runs in late phase, it will
        /// be enqueued and run after all other refactorings have been applied. Otherwise it will be run immediately.
        /// </summary>
        /// <param name="refactoring"></param>
        internal void PerformRefactoring(Refactoring refactoring)
        {
            if (refactoring.IsLate)
            {
                Log.Information("Enqueuing late-stage refactoring {Refactoring}", refactoring.GetType().Name);
                _refactorings.Enqueue(refactoring);
                return;
            }

            Log.Information("Performing refactoring {Refactoring}", refactoring.GetType().Name);
            refactoring.PerformRefactoring(this);
        }

        /// <summary>
        /// Stores refactoring data under the given key.
        /// </summary>
        internal void StoreRefactoringData<TV>(RefactoringDataKey<TV> key, TV data)
        {
            Data.StoreData(key, data);
        }

    
    }
}