using Editor;
using Sandbox;
using Sandbox.Helpers;
using System.Collections.Generic;
using System.Linq;

namespace SFXR.Editor;

[CustomEditor( typeof( List<SFXRSequencer.Note> ) )]
public class SFXRNotesListControlWidget : ControlWidget
{
    private SerializedCollection Collection;

    private Layout Content;

    private Button addButton;

    public override bool SupportsMultiEdit => false;

    SFXRSequencer Sequencer;

    public SFXRNotesListControlWidget( SerializedProperty property )
        : base( property )
    {
        SetSizeMode( SizeMode.Ignore, SizeMode.Ignore );

        base.Layout = Layout.Column();
        base.Layout.Spacing = 2f;
        if ( property.TryGetAsObject( out var obj ) && obj is SerializedCollection collection )
        {
            if ( property.Parent.Targets.First() is SFXRSequencer sequencer )
            {
                Sequencer = sequencer;
            }

            Collection = collection;
            Collection.OnEntryAdded = Rebuild;
            Collection.OnEntryRemoved = Rebuild;
            Content = Layout.Column();
            base.Layout.Add( Content );
            Layout layout = base.Layout.AddRow();
            layout.Margin = 8;
            layout.AddStretchCell();
            addButton = layout.Add( new Button( "Add Note" )
            {
                ToolTip = "Add new note",
            } );
            addButton.MinimumWidth = 200;
            addButton.Clicked = () => AddEntry();
            layout.AddStretchCell();
            Rebuild();
        }
    }

    public void Rebuild()
    {
        Content.Clear( deleteWidgets: true );
        Content.Margin = 0f;
        Layout layout = Layout.Column();
        layout.Spacing = 2f;
        int num = 0;
        int count = Collection.Count();
        for ( int i = 0; i < count; i++ )
        {
            var item = Collection.ElementAt( i );
            int index = num;
            var itemLayout = Layout.Row();
            itemLayout.Spacing = 4f;
            // try to get object
            if ( item.TryGetAsObject( out var obj ) )
            {
                var thing = new SFXRNoteSheet( obj );
                itemLayout.Add( thing );
            }
            else
            {
                var thing = ControlWidget.Create( item );
                thing.MinimumHeight = 100;
                itemLayout.Add( thing );
            }

            var buttonLayout = Layout.Column();
            if ( i > 0 )
            {
                buttonLayout.Add( new IconButton( "arrow_upward", delegate
                {
                    MoveUp( index );
                } )
                {
                    Background = Color.Transparent,
                    FixedWidth = ControlWidget.ControlRowHeight,
                    FixedHeight = ControlWidget.ControlRowHeight,
                    ToolTip = "Move note up"
                } );
            }
            else
            {
                buttonLayout.AddSpacingCell( 25 );
            }

            buttonLayout.Add( new IconButton( "delete", delegate
            {
                RemoveEntry( index );
            } )
            {
                Background = Color.Red,
                FixedWidth = ControlWidget.ControlRowHeight,
                FixedHeight = ControlWidget.ControlRowHeight,
                ToolTip = "Delete note"
            } );

            if ( i < count - 1 )
            {
                buttonLayout.Add( new IconButton( "arrow_downward", delegate
                {
                    MoveDown( index );
                } )
                {
                    Background = Color.Transparent,
                    FixedWidth = ControlWidget.ControlRowHeight,
                    FixedHeight = ControlWidget.ControlRowHeight,
                    ToolTip = "Move note down"
                } );
            }
            else
            {
                buttonLayout.AddSpacingCell( 25 );
            }

            itemLayout.Add( buttonLayout );
            layout.Add( itemLayout );
            num++;
        }

        MinimumHeight = 50 + (num * 105);

        Content.Add( layout );
        Content.Margin = ((num > 0) ? 3 : 0);
    }

    private void AddEntry()
    {
        Collection.Add( new SFXRSequencer.Note() );
    }

    private void RemoveEntry( int index )
    {
        Collection.RemoveAt( index );
    }

    private void MoveUp( int index )
    {
        // Move the index up in Sequencer.Notes list
        if ( index > 0 )
        {
            var note = Sequencer.Notes[index];
            Sequencer.Notes.RemoveAt( index );
            Sequencer.Notes.Insert( index - 1, note );
        }

        Rebuild();
    }

    private void MoveDown( int index )
    {
        // Move the index down in Sequencer.Notes list
        if ( index < Sequencer.Notes.Count - 1 )
        {
            var note = Sequencer.Notes[index];
            Sequencer.Notes.RemoveAt( index );
            Sequencer.Notes.Insert( index + 1, note );
        }

        Rebuild();
    }

    protected override void OnPaint()
    {

    }

    public void AddEffectDialog( Button source )
    {
        var s = new SFXREffectTypeSelector( this );
        s.OnSelect += ( t ) => AddEffect( t );
        s.OpenAt( source.ScreenRect.BottomLeft, animateOffset: new Vector2( 0, -4 ) );
        s.FixedWidth = source.Width;
    }

    void AddEffect( TypeDescription type )
    {
        if ( !type.TargetType.IsAssignableTo( typeof( SFXREffect ) ) )
        {
            Log.Error( $"Type {type.TargetType} is not assignable to {typeof( SFXREffect )}" );
            return;
        }

        SFXREffect effect = type.Create<SFXREffect>();
        Collection.Add( effect );

        Log.Info( effect );
    }


}