using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using JD.Application.View.PropertyGrid;
using JD.Collections.Extensions;
using JD.Collections.Interfaces;
using JD.LogService;
using JD.Maths.Utils;
using JD.Timeline.View.Actions.Refactor;
using JD.Timeline.View.PropertyGrid;
using TeaBox;
using TeaBox.Macros;
using JD.Serialization;

namespace JD.Timeline.View.Actions.Macros
{
    [Module]
    public class Selection : TapeActionHandlerBase
    {
        [Macro]
        public void ClearSelection()
        {
            CurrentView.Selection.Clear();
        }

        private List<Clip> FindClips(IExecutionContext context, string actorNameContains, System.Type clipType)
        {
            var clips = CurrentTape.Clips.Where(clip => (clipType == null || clip.Type == clipType) &&
                                            clip.ContainsActor(actorNameContains)).ToList();

            context.Name = $"Found {clips.Count} match";
 
            int count = clips.Count();
            if (count == 0)
            {
                context.LogWarning("Could not find any clip matching the criteria.");
            }
            else
            {
                context.LogMessage(MessageImportance.High, "Selected {0} clips", count);
            }

            return clips;
        }

        [Macro]
        [Description("Select the single next clip matching the criteria, and focus it")]
        public void SelectNextMatch(IExecutionContext context, string actorNameContains, System.Type clipType)
        {
            var currentView = CurrentView;
            if (currentView != null)
            {
                var clips = FindClips(context, actorNameContains, clipType);

                using (CurrentView.Selection.BeginScopedUpdate())
                {
                    if (clips.Count > 0)
                    {
                        int index = SelectedClips.CountEquals(1) ? (clips.IndexOf(SelectedClips.First()) + 1) % clips.Count : 0;
                        index = index.Clamp(0, clips.Count - 1);
                        var toSelect = clips[index];
                        CurrentView.Selection.Clear();
                        CurrentView.ClipView.AddToSelection(toSelect);
                        CurrentView.ClipView.ZoomExtents();
                        CurrentView.ClipView.ScrollIntoView(toSelect);

                        foreach (var clip in clips)
                        {
                            var step = context.AddStep();
                            step.Name = clip.Name;
                            if (clip == toSelect)
                            {
                                using (step.Start())
                                {
                                }
                            }
                        }
                    }
                }
            }
        }

        [Macro]
        public void SelectClipsWhere(IExecutionContext context, string actorNameContains, [PropertyEditor(typeof(ClipTypeEditor))] string clipType)
        {
            var currentView = CurrentView;
            if (currentView != null)
            {
                var type = string.IsNullOrEmpty(clipType) ? null : typeof (Clip).Assembly.GetType(clipType);
                var clips = FindClips(context, actorNameContains, type);

                using (CurrentView.Selection.BeginScopedUpdate())
                {
                    clips.ForEach(CurrentView.ClipView.AddToSelection);
                }
            }
        }

        [Macro]
        public void InvertSelection()
        {
            var currentView = CurrentView;
            if (currentView != null)
            {
                var selected = SelectedClips.ToList();
                var clips = CurrentTape.Clips.Where(clip => !selected.Contains(clip));

                using (CurrentView.Selection.BeginScopedUpdate())
                {
                    CurrentView.Selection.Clear();
                    clips.ForEach(CurrentView.ClipView.AddToSelection);
                }
            }
        }
    }
}