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

using MatterHackers.Agg;
using MatterHackers.Agg.UI;
using MatterHackers.PolygonMesh;
using MatterHackers.RenderOpenGl;
using MatterHackers.VectorMath;
using MatterHackers.MatterControl.DataStorage;
using MatterHackers.Localizations;
using MatterHackers.SerialPortCommunication.FrostedSerial;

namespace MatterHackers.MatterControl.PrinterControls.PrinterConnections
{
    public class SetupStepBaudRate : SetupConnectionWidgetBase
    {
        List<BaudRateRadioButton> BaudRateButtonsList = new List<BaudRateRadioButton>();
        FlowLayoutWidget printerBaudRateContainer;
        TextWidget printerBaudRateError;
        GuiWidget baudRateWidget;
        RadioButton otherBaudRateRadioButton;
        MHTextEditWidget otherBaudRateInput;
        Button nextButton;
        Button printerBaudRateHelpLink;
        TextWidget printerBaudRateHelpMessage;

        public SetupStepBaudRate(ConnectionWindow windowController, GuiWidget containerWindowToClose, PrinterSetupStatus setupPrinterStatus)
            : base(windowController, containerWindowToClose, setupPrinterStatus)
        {
            linkButtonFactory.fontSize = 8;
            
            printerBaudRateContainer = createPrinterBaudRateContainer();
            contentRow.AddChild(printerBaudRateContainer);
            {                
				nextButton = textImageButtonFactory.Generate(LocalizedString.Get("Continue"));
                nextButton.Click += new ButtonBase.ButtonEventHandler(NextButton_Click);

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

                //Add buttons to buttonContainer
                footerRow.AddChild(nextButton);
                footerRow.AddChild(hSpacer);
                footerRow.AddChild(cancelButton);
            }
            BindBaudRateHandlers();
        }

        private FlowLayoutWidget createPrinterBaudRateContainer()
        {
            FlowLayoutWidget container = new FlowLayoutWidget(FlowDirection.TopToBottom);
            container.Margin = new BorderDouble(0);
            container.VAnchor = VAnchor.ParentBottomTop;
            BorderDouble elementMargin = new BorderDouble(top: 3);

			string baudRateLabelText = LocalizedString.Get ("Baud Rate");
			string baudRateLabelTextFull = string.Format ("{0}:", baudRateLabelText);

			TextWidget baudRateLabel = new TextWidget(baudRateLabelTextFull, 0, 0, 12);
            baudRateLabel.TextColor = this.defaultTextColor;
            baudRateLabel.Margin = new BorderDouble(0, 0, 0, 10);
            baudRateLabel.HAnchor = HAnchor.ParentLeftRight;

            baudRateWidget = GetBaudRateWidget();
            baudRateWidget.HAnchor = HAnchor.ParentLeftRight;

            FlowLayoutWidget baudRateMessageContainer = new FlowLayoutWidget();
            baudRateMessageContainer.Margin = elementMargin;
            baudRateMessageContainer.HAnchor = HAnchor.ParentLeftRight;

			printerBaudRateError = new TextWidget(LocalizedString.Get("Select the baud rate."), 0, 0, 10);
			printerBaudRateError.TextColor = ActiveTheme.Instance.PrimaryTextColor;
            printerBaudRateError.AutoExpandBoundsToText = true;   

			printerBaudRateHelpLink = linkButtonFactory.Generate(LocalizedString.Get("What's this?"));
            printerBaudRateHelpLink.Margin = new BorderDouble(left: 5);
            printerBaudRateHelpLink.VAnchor = VAnchor.ParentBottom;
            printerBaudRateHelpLink.Click += new ButtonBase.ButtonEventHandler(printerBaudRateHelp_Click);

			printerBaudRateHelpMessage = new TextWidget(LocalizedString.Get("The term 'Baud Rate' roughly means the speed at which\ndata is transmitted.  Baud rates may differ from printer to\nprinter. Refer to your printer manual for more info.\n\nTip: If you are uncertain - try 250000."), 0, 0, 10);
			printerBaudRateHelpMessage.TextColor = ActiveTheme.Instance.PrimaryTextColor;
            printerBaudRateHelpMessage.Margin = new BorderDouble(top: 10);
            printerBaudRateHelpMessage.Visible = false;

            baudRateMessageContainer.AddChild(printerBaudRateError);
            baudRateMessageContainer.AddChild(printerBaudRateHelpLink);

            container.AddChild(baudRateLabel);
            container.AddChild(baudRateWidget);
            container.AddChild(baudRateMessageContainer);
            container.AddChild(printerBaudRateHelpMessage);
            

            container.HAnchor = HAnchor.ParentLeftRight;
            return container;
        }

        void printerBaudRateHelp_Click(object sender, MouseEventArgs mouseEvent)
        {
            printerBaudRateHelpMessage.Visible = !printerBaudRateHelpMessage.Visible;
        }

        public GuiWidget GetBaudRateWidget()
        {
            FlowLayoutWidget baudRateContainer = new FlowLayoutWidget(FlowDirection.TopToBottom);            
            baudRateContainer.Margin = new BorderDouble(0);

            //TO DO - Add handling for 'Other' option with attached TextEdit
            List<string> baudRates = new List<string> { "115200", "250000" };
            BorderDouble baudRateMargin = new BorderDouble(3, 3, 5, 0);

            foreach (string baudRate in baudRates)
            {
                BaudRateRadioButton baudOption = new BaudRateRadioButton(baudRate);
                BaudRateButtonsList.Add(baudOption);
                baudOption.Margin = baudRateMargin;
                baudOption.TextColor = this.subContainerTextColor;
                if (this.ActivePrinter.BaudRate == baudRate)
                {
                    baudOption.Checked = true;
                }
                baudRateContainer.AddChild(baudOption);
            }

			otherBaudRateRadioButton = new RadioButton(LocalizedString.Get("Other"));
            otherBaudRateRadioButton.Margin = baudRateMargin;
            otherBaudRateRadioButton.TextColor = this.subContainerTextColor;

            baudRateContainer.AddChild(otherBaudRateRadioButton);

            //See if the baud rate of the current print is in the list of displayed rates,
            //flag the 'other' option if it is not and prefill the rate.
            otherBaudRateInput = new MHTextEditWidget("");
            otherBaudRateInput.Visible = false;
            otherBaudRateInput.HAnchor = HAnchor.ParentLeftRight;

            if (this.ActivePrinter.BaudRate != null)
            {
                if (!baudRates.Contains(this.ActivePrinter.BaudRate.ToString()))
                {
                    otherBaudRateRadioButton.Checked = true;
                    otherBaudRateInput.Text  = this.ActivePrinter.BaudRate.ToString();
                    otherBaudRateInput.Visible = true;
                }
            }            

            baudRateContainer.AddChild(otherBaudRateInput);
            return baudRateContainer;
        }

        private void BindBaudRateHandlers()
        {
            otherBaudRateRadioButton.CheckedStateChanged += new RadioButton.CheckedStateChangedEventHandler(BindBaudRate_Select);
            foreach (BaudRateRadioButton button in BaudRateButtonsList)
            {
                button.CheckedStateChanged += new RadioButton.CheckedStateChangedEventHandler(BindBaudRate_Select);
            }
            BindBaudRate_Select(null, null);
        }


        private void BindBaudRate_Select(object sender, EventArgs e)
        {
            if (otherBaudRateRadioButton.Checked == true)
            {
                otherBaudRateInput.Visible = true;
            }
            else
            {
                otherBaudRateInput.Visible = false;
            }
        }

        void RecreateCurrentWidget(object state)
        {
            // you can call this like this
            //             AfterUiEvents.AddAction(new AfterUIAction(RecreateCurrentWidget));

            Parent.AddChild(new EditConnectionWidget((ConnectionWindow)Parent, Parent, ActivePrinter));
            Parent.RemoveChild(this);
        }

        void ReloadCurrentWidget(object sender, MouseEventArgs mouseEvent)
        {
            UiThread.RunOnIdle(RecreateCurrentWidget);
        }

        

        void MoveToNextWidget(object state)
        {
            // you can call this like this
            //             AfterUiEvents.AddAction(new AfterUIAction(MoveToNextWidget));

            if (this.PrinterSetupStatus.DriverNeedsToBeInstalled)
            {
                Parent.AddChild(new SetupStepInstallDriver((ConnectionWindow)Parent, Parent, this.PrinterSetupStatus));
                Parent.RemoveChild(this);
            }
            else
            {
                Parent.AddChild(new SetupStepComPortOne((ConnectionWindow)Parent, Parent, this.PrinterSetupStatus));
                Parent.RemoveChild(this);
            }
        }

        void NextButton_Click(object sender, MouseEventArgs mouseEvent)
        {
            bool canContinue = this.OnSave();
            if (canContinue)
            {
                UiThread.RunOnIdle(MoveToNextWidget);
            }
        }

        bool OnSave()
        {
            string baudRate = null;
            try
            {
                baudRate = GetSelectedBaudRate(); 
            }
            catch
            {
                printerBaudRateHelpLink.Visible = false;
                printerBaudRateError.TextColor = RGBA_Bytes.Red;
				printerBaudRateError.Text = LocalizedString.Get("Oops! Please select a baud rate.");
            }

            if (baudRate != null)
            {
                try
                {
                    int baudRateInt = Convert.ToInt32(baudRate);
                    this.ActivePrinter.BaudRate = baudRate;
                    return true;
                }
                catch
                {
                    printerBaudRateHelpLink.Visible = false;
                    printerBaudRateError.TextColor = RGBA_Bytes.Red;
					printerBaudRateError.Text = LocalizedString.Get("Oops! Baud Rate must be an integer.");
                    return false;
                }
            }
            else
            {
                return false;
            }
        }

        private string GetSelectedBaudRate()
        {
            foreach (BaudRateRadioButton button in BaudRateButtonsList)
            {
                if (button.Checked)
                {
                    return button.BaudRate.ToString();
                }
            }
            if (otherBaudRateRadioButton.Checked)
            {
                return otherBaudRateInput.Text;
            }

			throw new Exception(LocalizedString.Get("Could not find a selected button."));
        }
    }
}