/*
Copyright (c) 2014, Lars Brubaker
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met: 

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer. 
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution. 

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies, 
either expressed or implied, of the FreeBSD Project.
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;

using MatterHackers.Agg;
using MatterHackers.Agg.UI;
using MatterHackers.VectorMath;
using MatterHackers.Agg.Image;
using MatterHackers.MatterControl.DataStorage;
using MatterHackers.MatterControl.FieldValidation;
using MatterHackers.Localizations;
using MatterHackers.MatterControl.CustomWidgets;

namespace MatterHackers.MatterControl.SlicerConfiguration
{
    public class SlicePresetsWidget : GuiWidget
    {
        TextImageButtonFactory textImageButtonFactory = new TextImageButtonFactory();
        LinkButtonFactory linkButtonFactory = new LinkButtonFactory();
        SlicePresetsWindow windowController;
        MHTextEditWidget macroNameInput;
        TextWidget macroNameError;
        MHTextEditWidget macroCommandInput;
        TextWidget macroCommandError;

        public SlicePresetsWidget(SlicePresetsWindow windowController)
        {
            this.windowController = windowController;
            if (this.windowController.ActiveMacro == null)
            {
                initMacro();
            }


            linkButtonFactory.fontSize = 10;

            FlowLayoutWidget topToBottom = new FlowLayoutWidget(FlowDirection.TopToBottom);
            topToBottom.AnchorAll();
            topToBottom.Padding = new BorderDouble(3, 0, 3, 5);

            FlowLayoutWidget headerRow = new FlowLayoutWidget(FlowDirection.LeftToRight);
            headerRow.HAnchor = HAnchor.ParentLeftRight;
            headerRow.Margin = new BorderDouble(0, 3, 0, 0);
            headerRow.Padding = new BorderDouble(0, 3, 0, 3);

            {
                string editMacroLabel = LocalizedString.Get("Edit Macro");
                string editMacroLabelFull = string.Format("{0}:", editMacroLabel);
                TextWidget elementHeader = new TextWidget(editMacroLabelFull, pointSize: 14);
                elementHeader.TextColor = ActiveTheme.Instance.PrimaryTextColor;
                elementHeader.HAnchor = HAnchor.ParentLeftRight;
                elementHeader.VAnchor = Agg.UI.VAnchor.ParentBottom;
                headerRow.AddChild(elementHeader);
            }


            topToBottom.AddChild(headerRow);

            FlowLayoutWidget presetsFormContainer = new FlowLayoutWidget(FlowDirection.TopToBottom);
            {
                presetsFormContainer.HAnchor = HAnchor.ParentLeftRight;
                presetsFormContainer.VAnchor = VAnchor.ParentBottomTop;
                presetsFormContainer.Padding = new BorderDouble(3);
                presetsFormContainer.BackgroundColor = ActiveTheme.Instance.SecondaryBackgroundColor;
            }

            topToBottom.AddChild(presetsFormContainer);

            presetsFormContainer.AddChild(createMacroNameContainer());
            presetsFormContainer.AddChild(createMacroCommandContainer());


            Button addMacroButton = textImageButtonFactory.Generate(LocalizedString.Get("Save"));
            addMacroButton.Click += new ButtonBase.ButtonEventHandler(saveMacro_Click);

            Button cancelPresetsButton = textImageButtonFactory.Generate(LocalizedString.Get("Cancel"));
            cancelPresetsButton.Click += (sender, e) =>
            {
                UiThread.RunOnIdle((state) =>
                {
                    windowController.ChangeToSlicePresetList();
                });
            };

            FlowLayoutWidget buttonRow = new FlowLayoutWidget();
            buttonRow.HAnchor = HAnchor.ParentLeftRight;
            buttonRow.Padding = new BorderDouble(0, 3);

            GuiWidget hButtonSpacer = new GuiWidget();
            hButtonSpacer.HAnchor = HAnchor.ParentLeftRight;

            buttonRow.AddChild(addMacroButton);
            buttonRow.AddChild(hButtonSpacer);
            buttonRow.AddChild(cancelPresetsButton);

            topToBottom.AddChild(buttonRow);
            AddChild(topToBottom);
            this.AnchorAll();
        }

        private FlowLayoutWidget createMacroNameContainer()
        {
            FlowLayoutWidget container = new FlowLayoutWidget(FlowDirection.TopToBottom);
            container.Margin = new BorderDouble(0, 5);
            BorderDouble elementMargin = new BorderDouble(top: 3);

            string macroNameLabelTxt = LocalizedString.Get("Macro Name");
            string macroNameLabelTxtFull = string.Format("{0}:", macroNameLabelTxt);
            TextWidget macroNameLabel = new TextWidget(macroNameLabelTxtFull, 0, 0, 12);
            macroNameLabel.TextColor = ActiveTheme.Instance.PrimaryTextColor;
            macroNameLabel.HAnchor = HAnchor.ParentLeftRight;
            macroNameLabel.Margin = new BorderDouble(0, 0, 0, 1);

            macroNameInput = new MHTextEditWidget(windowController.ActiveMacro.Name);
            macroNameInput.HAnchor = HAnchor.ParentLeftRight;

            string giveMacroANameLbl = LocalizedString.Get("Give your macro a name");
            string giveMacroANameLblFull = string.Format("{0}.", giveMacroANameLbl);
            macroNameError = new TextWidget(giveMacroANameLblFull, 0, 0, 10);
            macroNameError.TextColor = ActiveTheme.Instance.PrimaryTextColor;
            macroNameError.HAnchor = HAnchor.ParentLeftRight;
            macroNameError.Margin = elementMargin;

            container.AddChild(macroNameLabel);
            container.AddChild(macroNameInput);
            container.AddChild(macroNameError);
            container.HAnchor = HAnchor.ParentLeftRight;
            return container;
        }

        private FlowLayoutWidget createMacroCommandContainer()
        {
            FlowLayoutWidget container = new FlowLayoutWidget(FlowDirection.TopToBottom);
            container.Margin = new BorderDouble(0, 5);
            BorderDouble elementMargin = new BorderDouble(top: 3);

            string macroCommandLblTxt = LocalizedString.Get("Macro Commands");
            string macroCommandLblTxtFull = string.Format("{0}:", macroCommandLblTxt);
            TextWidget macroCommandLabel = new TextWidget(macroCommandLblTxtFull, 0, 0, 12);
            macroCommandLabel.TextColor = ActiveTheme.Instance.PrimaryTextColor;
            macroCommandLabel.HAnchor = HAnchor.ParentLeftRight;
            macroCommandLabel.Margin = new BorderDouble(0, 0, 0, 1);

            macroCommandInput = new MHTextEditWidget(windowController.ActiveMacro.Value, pixelHeight: 120, multiLine: true);
            macroCommandInput.HAnchor = HAnchor.ParentLeftRight;

            string shouldBeGCodeLbl = LocalizedString.Get("This should be in 'Gcode'");
            string shouldBeGCodeLblFull = string.Format("{0}.", shouldBeGCodeLbl);
            macroCommandError = new TextWidget(shouldBeGCodeLblFull, 0, 0, 10);
            macroCommandError.TextColor = ActiveTheme.Instance.PrimaryTextColor;
            macroCommandError.HAnchor = HAnchor.ParentLeftRight;
            macroCommandError.Margin = elementMargin;

            container.AddChild(macroCommandLabel);
            container.AddChild(macroCommandInput);
            container.AddChild(macroCommandError);
            container.HAnchor = HAnchor.ParentLeftRight;
            return container;
        }

        private bool ValidateMacroForm()
        {
            ValidationMethods validationMethods = new ValidationMethods();

            List<FormField> formFields = new List<FormField> { };
            FormField.ValidationHandler[] stringValidationHandlers = new FormField.ValidationHandler[] { validationMethods.StringIsNotEmpty };
            FormField.ValidationHandler[] nameValidationHandlers = new FormField.ValidationHandler[] { validationMethods.StringIsNotEmpty, validationMethods.StringHasNoSpecialChars };

            formFields.Add(new FormField(macroNameInput, macroNameError, nameValidationHandlers));
            formFields.Add(new FormField(macroCommandInput, macroCommandError, stringValidationHandlers));

            bool formIsValid = true;
            foreach (FormField formField in formFields)
            {
                formField.FieldErrorMessageWidget.Visible = false;
                bool fieldIsValid = formField.Validate();
                if (!fieldIsValid)
                {
                    formIsValid = false;
                }
            }
            return formIsValid;
        }

        void initMacro()
        {
            if (ActivePrinterProfile.Instance.ActivePrinter != null)
            {
                windowController.ActiveMacro = new CustomCommands();
                windowController.ActiveMacro.PrinterId = ActivePrinterProfile.Instance.ActivePrinter.Id;
                windowController.ActiveMacro.Name = "Home All";
                windowController.ActiveMacro.Value = "G28 ; Home All Axes";
            }
            else
            {
                throw new Exception("Macros require a printer profile");
            }
        }

        void saveMacro_Click(object sender, MouseEventArgs mouseEvent)
        {
            UiThread.RunOnIdle((state) =>
            {
                if (ValidateMacroForm())
                {
                    saveActiveMacro();
                    windowController.functionToCallOnSave(this, null);
                    windowController.ChangeToSlicePresetList();
                }
            });
        }

        void saveActiveMacro()
        {
            windowController.ActiveMacro.Name = macroNameInput.Text;
            windowController.ActiveMacro.Value = macroCommandInput.Text;
            windowController.ActiveMacro.Commit();
        }

        IEnumerable<DataStorage.CustomCommands> GetMacros()
        {
            IEnumerable<DataStorage.CustomCommands> results = Enumerable.Empty<DataStorage.CustomCommands>();
            if (ActivePrinterProfile.Instance.ActivePrinter != null)
            {
                //Retrieve a list of saved printers from the Datastore
                string query = string.Format("SELECT * FROM CustomCommands WHERE PrinterId = {0};", ActivePrinterProfile.Instance.ActivePrinter.Id);
                results = (IEnumerable<DataStorage.CustomCommands>)DataStorage.Datastore.Instance.dbSQLite.Query<DataStorage.CustomCommands>(query);
                return results;
            }
            return results;
        }

    }

    public class SlicePresetList : GuiWidget
    {
        SlicePresetsWindow windowController;
        TextImageButtonFactory buttonFactory;

        public SlicePresetList(SlicePresetsWindow windowController)
        {
            this.windowController = windowController;
            this.AnchorAll();

            buttonFactory = new TextImageButtonFactory();
            buttonFactory.normalTextColor = ActiveTheme.Instance.PrimaryTextColor;
            buttonFactory.hoverTextColor = ActiveTheme.Instance.PrimaryTextColor;
            buttonFactory.disabledTextColor = ActiveTheme.Instance.PrimaryTextColor;
            buttonFactory.pressedTextColor = ActiveTheme.Instance.PrimaryTextColor;
            buttonFactory.borderWidth = 0;

            AddElements();
        }

        void AddElements()
        {
            FlowLayoutWidget mainContainer = new FlowLayoutWidget(FlowDirection.TopToBottom);
            mainContainer.Padding = new BorderDouble(3);
            mainContainer.AnchorAll();

            mainContainer.AddChild(GetTopRow());
            mainContainer.AddChild(GetMiddleRow());
            mainContainer.AddChild(GetBottmRow());

            this.AddChild(mainContainer);
        }

        FlowLayoutWidget GetTopRow()
        {
            FlowLayoutWidget container = new FlowLayoutWidget();
            container.HAnchor = HAnchor.ParentLeftRight;
            container.AddChild(new GuiWidget(1, 40));

            container.AddChild(new TextWidget(LocalizedString.Get(windowController.filterTag)));

            return container;
        }

        FlowLayoutWidget GetMiddleRow()
        {
            FlowLayoutWidget container = new FlowLayoutWidget();
            container.HAnchor = HAnchor.ParentLeftRight;
            container.VAnchor = Agg.UI.VAnchor.ParentBottomTop;
            container.BackgroundColor = ActiveTheme.Instance.SecondaryBackgroundColor;
            container.Margin = new BorderDouble(0, 3);
            return container;
        }

        FlowLayoutWidget GetBottmRow()
        {
            FlowLayoutWidget container = new FlowLayoutWidget();
            container.HAnchor = HAnchor.ParentLeftRight;

            Button addPresetButton = buttonFactory.Generate(LocalizedString.Get("Add"), "icon_circle_plus.png");
            Button cancelButton = buttonFactory.Generate(LocalizedString.Get("Cancel"));

            container.AddChild(addPresetButton);
            container.AddChild(new HorizontalSpacer());
            container.AddChild(cancelButton);

            return container;
        }
    }

    public class SlicePresetsWindow : SystemWindow
    {

        public EventHandler functionToCallOnSave;
        public string filterTag;

        public DataStorage.CustomCommands ActiveMacro;

        public SlicePresetsWindow(EventHandler functionToCallOnSave, string filterTag)
            : base(420, 560)
        {
            Title = LocalizedString.Get("Slice Presets Editor");
            this.filterTag = filterTag;
            this.functionToCallOnSave = functionToCallOnSave;
            BackgroundColor = ActiveTheme.Instance.PrimaryBackgroundColor;
            ChangeToSlicePresetList();
            ShowAsSystemWindow();
        }


        public void ChangeToSlicePresetList()
        {
            this.ActiveMacro = null;
            UiThread.RunOnIdle(DoChangeToMacroList);
        }

        private void DoChangeToMacroList(object state)
        {
            GuiWidget slicePresetWidget = new SlicePresetList(this);
            this.RemoveAllChildren();
            this.AddChild(slicePresetWidget);
            this.Invalidate();
        }

        public void ChangeToMacroDetail(CustomCommands macro = null)
        {
            this.ActiveMacro = macro;
            UiThread.RunOnIdle(DoChangeToMacroDetail);
        }

        private void DoChangeToMacroDetail(object state)
        {
            GuiWidget macroDetailWidget = new SlicePresetList(this);
            this.RemoveAllChildren();
            this.AddChild(macroDetailWidget);
            this.Invalidate();
        }
    }
}