using System;
using System.IO;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Layout;
using Avalonia.Markup.Xaml;
using UVtools.Core.Operations;
using UVtools.Core.Scripting;
using UVtools.WPF.Extensions;
using UVtools.WPF.Windows;

namespace UVtools.WPF.Controls.Tools
{
    public class ToolScriptingControl : ToolControl
    {
        public OperationScripting Operation => BaseOperation as OperationScripting;

        private readonly StackPanel _scriptConfigurationPanel;
        private readonly Grid _scriptVariablesGrid;


        public ToolScriptingControl()
        {
            InitializeComponent();
            _scriptConfigurationPanel = this.FindControl<StackPanel>("ScriptConfigurationPanel");
            _scriptVariablesGrid = this.FindControl<Grid>("ScriptVariablesGrid");
            BaseOperation = new OperationScripting(SlicerFile);
        }

        private void InitializeComponent()
        {
            AvaloniaXamlLoader.Load(this);
        }

        public override void Callback(ToolWindow.Callbacks callback)
        {
            switch (callback)
            {
                case ToolWindow.Callbacks.Init:
                case ToolWindow.Callbacks.Loaded:
                    ParentWindow.ButtonOkEnabled = Operation.CanExecute;
                    ReloadGUI();
                    Operation.PropertyChanged += (sender, e) =>
                    {
                        if (e.PropertyName == nameof(Operation.CanExecute))
                        {
                            ParentWindow.ButtonOkEnabled = Operation.CanExecute;
                        }
                    };
                    Operation.OnScriptReload += (sender, e) => ReloadGUI();
                    break;
            }
        }

        public async void LoadScript()
        {
            var dialog = new OpenFileDialog
            {
                AllowMultiple = false,
                Directory = UserSettings.Instance.General.DefaultDirectoryScripts,
                Filters = Helpers.ScriptsFileFilter,
            };

            var files = await dialog.ShowAsync(ParentWindow);
            if (files is null || files.Length == 0) return;

            Operation.FilePath = files[0];
            ReloadScript();
        }

        public async void ReloadScript()
        {
            try
            {
                Operation.ReloadScriptFromFile();
            }
            catch (Exception e)
            {
                await ParentWindow.MessageBoxError(e.Message);
            }
            
        }

        public void OpenScriptFolder()
        {
            if (!Operation.HaveFile) return;
            App.StartProcess(Path.GetDirectoryName(Operation.FilePath));
        }

        public void OpenScriptFile()
        {
            if (!Operation.HaveFile) return;
            App.StartProcess(Operation.FilePath);
        }

        public void ReloadGUI()
        {
            if (!Operation.CanExecute) return;

            _scriptConfigurationPanel.Children.Clear();
            _scriptVariablesGrid.Children.Clear();
            _scriptVariablesGrid.RowDefinitions.Clear();

            TextBox tbScriptName = new()
            {
                IsReadOnly = true,
                Text = $"{Operation.ScriptGlobals.Script.Name} | Version: {Operation.ScriptGlobals.Script.Version} by {Operation.ScriptGlobals.Script.Author}",
                UseFloatingWatermark = true,
                Watermark = "Script name, version and author"
            };

            TextBox tbScriptDescription = new()
            {
                IsReadOnly = true,
                Text = Operation.ScriptGlobals.Script.Description,
                AcceptsReturn = true,
                UseFloatingWatermark = true,
                Watermark = "Script description"
            };

            _scriptConfigurationPanel.Children.Add(tbScriptName);
            _scriptConfigurationPanel.Children.Add(tbScriptDescription);

            //Operation.ScriptGlobals.Script.UserInputs.Add(new ScriptBoolInput() { Label = "Hellow" });
            //Operation.ScriptGlobals.Script.UserInputs.Add(new ScriptTextBoxInput() { Label = "Hellow", Value = "m,e", MultiLine = true});
            if (Operation.ScriptGlobals.Script.UserInputs.Count == 0)
            {
                return;
            }

            
            string rowDefinitions = string.Empty;
            for (var i = 0; i < Operation.ScriptGlobals.Script.UserInputs.Count; i++)
            {
                if (i < Operation.ScriptGlobals.Script.UserInputs.Count - 1)
                {
                    rowDefinitions += "Auto,10,";
                }
                else
                {
                    rowDefinitions += "Auto";
                }
            }

            _scriptVariablesGrid.RowDefinitions = RowDefinitions.Parse(rowDefinitions);

            for (var i = 0; i < Operation.ScriptGlobals.Script.UserInputs.Count; i++)
            {
                var variable = Operation.ScriptGlobals.Script.UserInputs[i];

                if (!string.IsNullOrWhiteSpace(variable.Label) && variable is not ScriptCheckBoxInput)
                {
                    TextBlock tbLabel = new()
                    {
                        VerticalAlignment = VerticalAlignment.Center,
                        Text = $"{variable.Label}:"
                    };

                    if (!string.IsNullOrWhiteSpace(variable.ToolTip))
                    {
                        ToolTip.SetTip(tbLabel, variable.ToolTip);
                    }

                    _scriptVariablesGrid.Children.Add(tbLabel);
                    Grid.SetRow(tbLabel, i * 2);
                    Grid.SetColumn(tbLabel, 0);
                }

                if (!string.IsNullOrWhiteSpace(variable.Unit))
                {
                    TextBlock control = new()
                    {
                        VerticalAlignment = VerticalAlignment.Center,
                        Text = variable.Unit
                    };

                    _scriptVariablesGrid.Children.Add(control);
                    Grid.SetRow(control, i * 2);
                    Grid.SetColumn(control, 4);
                }

                switch (variable)
                {
                    case ScriptNumericalInput<sbyte> numSBYTE:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numSBYTE.Minimum,
                                Maximum = numSBYTE.Maximum,
                                Value = numSBYTE.Value,
                                Increment = numSBYTE.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numSBYTE.Value = (sbyte)value;
                                control.Value = numSBYTE.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<byte> numBYTE:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numBYTE.Minimum,
                                Maximum = numBYTE.Maximum,
                                Value = numBYTE.Value,
                                Increment = numBYTE.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numBYTE.Value = (byte)value;
                                control.Value = numBYTE.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<short> numSHORT:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numSHORT.Minimum,
                                Maximum = numSHORT.Maximum,
                                Value = numSHORT.Value,
                                Increment = numSHORT.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numSHORT.Value = (short)value;
                                control.Value = numSHORT.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<ushort> numUSHORT:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numUSHORT.Minimum,
                                Maximum = numUSHORT.Maximum,
                                Value = numUSHORT.Value,
                                Increment = numUSHORT.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numUSHORT.Value = (ushort)value;
                                control.Value = numUSHORT.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<int> numINT:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numINT.Minimum,
                                Maximum = numINT.Maximum,
                                Value = numINT.Value,
                                Increment = numINT.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numINT.Value = (int)value;
                                control.Value = numINT.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<uint> numUINT:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numUINT.Minimum,
                                Maximum = numUINT.Maximum,
                                Value = numUINT.Value,
                                Increment = numUINT.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numUINT.Value = (uint)value;
                                control.Value = numUINT.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<long> numLONG:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numLONG.Minimum,
                                Maximum = numLONG.Maximum,
                                Value = numLONG.Value,
                                Increment = numLONG.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numLONG.Value = (long)value;
                                control.Value = numLONG.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<ulong> numULONG:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numULONG.Minimum,
                                Maximum = numULONG.Maximum,
                                Value = numULONG.Value,
                                Increment = numULONG.Increment,
                                MinWidth = 150
                            };

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numULONG.Value = (ulong)value;
                                control.Value = numULONG.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<float> numFLOAT:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numFLOAT.Minimum,
                                Maximum = numFLOAT.Maximum,
                                Value = numFLOAT.Value,
                                Increment = numFLOAT.Increment,
                                MinWidth = 150
                            };

                            if (numFLOAT.DecimalPlates > 0)
                            {
                                control.FormatString = $"F{numFLOAT.DecimalPlates}";
                            }

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numFLOAT.Value = (float) Math.Round(value, numFLOAT.DecimalPlates);
                                control.Value = numFLOAT.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<double> numDOUBLE:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = numDOUBLE.Minimum,
                                Maximum = numDOUBLE.Maximum,
                                Value = numDOUBLE.Value,
                                Increment = numDOUBLE.Increment,
                                MinWidth = 150
                            };

                            if (numDOUBLE.DecimalPlates > 0)
                            {
                                control.FormatString = $"F{numDOUBLE.DecimalPlates}";
                            }

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numDOUBLE.Value = Math.Round(value, numDOUBLE.DecimalPlates);
                                control.Value = numDOUBLE.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptNumericalInput<decimal> numDECIMAL:
                        {
                            NumericUpDown control = new()
                            {
                                Minimum = (double)numDECIMAL.Minimum,
                                Maximum = (double)numDECIMAL.Maximum,
                                Value = (double)numDECIMAL.Value,
                                Increment = (double)numDECIMAL.Increment,
                                MinWidth = 150
                            };

                            if (numDECIMAL.DecimalPlates > 0)
                            {
                                control.FormatString = $"F{numDECIMAL.DecimalPlates}";
                            }

                            var valueProperty = control.GetObservable(NumericUpDown.ValueProperty);
                            valueProperty.Subscribe(value =>
                            {
                                numDECIMAL.Value = (decimal)Math.Round(value, numDECIMAL.DecimalPlates);
                                control.Value = (double)numDECIMAL.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            continue;
                        }
                    case ScriptCheckBoxInput inputCheckBox:
                        {
                            CheckBox control = new()
                            {
                                Content = variable.Label,
                                IsChecked = inputCheckBox.Value
                            };

                            var valueProperty = control.GetObservable(CheckBox.IsCheckedProperty);
                            valueProperty.Subscribe(value =>
                            {
                                if (value != null) inputCheckBox.Value = value.Value;
                            });

                            _scriptVariablesGrid.Children.Add(control);
                            Grid.SetRow(control, i * 2);
                            Grid.SetColumn(control, 2);

                            if (!string.IsNullOrWhiteSpace(variable.ToolTip))
                            {
                                ToolTip.SetTip(control, variable.ToolTip);
                            }

                            continue;
                        }
                    case ScriptTextBoxInput inputTextBox:
                    {
                        TextBox control = new()
                        {
                            AcceptsReturn = inputTextBox.MultiLine,
                            Text = inputTextBox.Value,
                        };

                        var valueProperty = control.GetObservable(TextBox.TextProperty);
                        valueProperty.Subscribe(value =>
                        {
                            inputTextBox.Value = value;
                        });

                        _scriptVariablesGrid.Children.Add(control);
                        Grid.SetRow(control, i * 2);
                        Grid.SetColumn(control, 2);

                        continue;
                    }
                }
            }

            ParentWindow.FitToSize();
        }
    }
}