using System.Text.RegularExpressions;
using Editor;

namespace Sonic853.InchConverterLib.Editors
{
    [Dock("Editor", "Inch Converter")]
    public class InchConverterWidget : Widget
    {
        protected static InchConverterWidget instance;
        public static InchConverterWidget Instance => instance ?? new(null);
        LineEdit inputm;
        LineEdit inputcm;
        LineEdit inputin;
        public InchConverterWidget(Widget parent) : base(parent, false)
        {
            // Create a Column Layout
            Layout = Layout.Column();
            // Give it some Margins/Spacing
            Layout.Margin = 4;
            Layout.Spacing = 4;
            // Apply some CSS styling
            SetStyles("background-color: #303445; color: white; font-weight: 600;");

            // Add some child Widgets to the Layout
            Layout.Add(new Label("m:", this));
            inputm = Layout.Add(new LineEdit()
            {
                Text = "0.0254",
            });
            Layout.Add(new Label("cm:", this));
            inputcm = Layout.Add(new LineEdit()
            {
                Text = "2.54",
            });
            Layout.Add(new Label("inch:", this));
            inputin = Layout.Add(new LineEdit()
            {
                Text = "1",
            });
            inputm.TextChanged += InputMTextChanged;
            inputcm.TextChanged += InputCMTextChanged;
            inputin.TextChanged += InputINTextChanged;
        }
        void InputMTextChanged(string text)
        {
            var _text = NumberOnly(text);

            if (!float.TryParse(_text, out var m)) { return; }
            if (m == 0f)
            {
                ToZero();
                return;
            }
            inputcm.TextChanged -= InputCMTextChanged;
            inputcm.Text = $"{InchConverter.MToCm(m)}";
            inputcm.TextChanged += InputCMTextChanged;

            inputin.TextChanged -= InputINTextChanged;
            inputin.Text = $"{InchConverter.MToIn(m)}";
            inputin.TextChanged += InputINTextChanged;

            inputm.TextChanged -= InputMTextChanged;
            inputm.Text = _text;
            inputm.TextChanged += InputMTextChanged;
        }
        void InputCMTextChanged(string text)
        {
            var _text = NumberOnly(text);

            if (!float.TryParse(_text, out var cm)) { return; }
            if (cm == 0f)
            {
                ToZero();
                return;
            }
            inputm.TextChanged -= InputMTextChanged;
            inputm.Text = $"{InchConverter.CmToM(cm)}";
            inputm.TextChanged += InputMTextChanged;

            inputin.TextChanged -= InputINTextChanged;
            inputin.Text = $"{InchConverter.CmToIn(cm)}";
            inputin.TextChanged += InputINTextChanged;

            inputcm.TextChanged -= InputCMTextChanged;
            inputcm.Text = _text;
            inputcm.TextChanged += InputCMTextChanged;
        }
        void InputINTextChanged(string text)
        {
            var _text = NumberOnly(text);

            if (!float.TryParse(_text, out var inch)) { return; }
            if (inch == 0f)
            {
                ToZero();
                return;
            }
            inputcm.TextChanged -= InputCMTextChanged;
            inputcm.Text = $"{InchConverter.InToCm(inch)}";
            inputcm.TextChanged += InputCMTextChanged;

            inputm.TextChanged -= InputMTextChanged;
            inputm.Text = $"{InchConverter.InToM(inch)}";
            inputm.TextChanged += InputMTextChanged;

            inputin.TextChanged -= InputINTextChanged;
            inputin.Text = _text;
            inputin.TextChanged += InputINTextChanged;
        }
        void ToZero()
        {
            inputcm.TextChanged -= InputCMTextChanged;
            inputcm.Text = "0";
            inputcm.TextChanged += InputCMTextChanged;

            inputin.TextChanged -= InputINTextChanged;
            inputin.Text = "0";
            inputin.TextChanged += InputINTextChanged;

            inputm.TextChanged -= InputMTextChanged;
            inputm.Text = "0";
            inputm.TextChanged += InputMTextChanged;
        }
        string NumberOnly(string text)
        {
            var _text = Regex.Replace(text, @"[^0-9.]", "");

            if (string.IsNullOrEmpty(_text))
            {
                _text = "0";
            }
            return _text;
        }
        protected override bool OnClose()
        {
            base.OnClose();
            instance = null;
            return true;
        }
    }


}