using Resources;
using SmartCoalApplication.Base;
using SmartCoalApplication.Base.CommTool;
using SmartCoalApplication.Core;
using System;
using System.Drawing;
using System.Windows.Forms;

namespace SmartCoalApplication.Actions
{
    internal sealed class CloseWorkspaceAction : AppWorkspaceAction
    {
        private DocumentWorkspace closeMe;
        private bool cancelled;

        public bool Cancelled
        {
            get
            {
                return this.cancelled;
            }
        }

        public override void PerformAction(AppWorkspace appWorkspace)
        {
            if (appWorkspace == null)
            {
                throw new ArgumentNullException("appWorkspace");
            }

            DocumentWorkspace dw;

            if (this.closeMe == null)
            {
                dw = appWorkspace.ActiveDocumentWorkspace;
            }
            else
            {
                dw = this.closeMe;
            }

            if (dw != null)
            {
                if (dw.Document == null)
                {
                    appWorkspace.RemoveDocumentWorkspace(dw);
                }
                else if (!dw.Document.Dirty)
                {
                    appWorkspace.RemoveDocumentWorkspace(dw);
                }
                else
                {
                    appWorkspace.ActiveDocumentWorkspace = dw;

                    TaskButton saveTB = new TaskButton(
                        PdnResources.GetImageResource("Icons.MenuFileSaveIcon.png").Reference,
                        PdnResources.GetString("CloseWorkspaceAction.SaveButton.ActionText"),
                        PdnResources.GetString("CloseWorkspaceAction.SaveButton.ExplanationText"));

                    TaskButton dontSaveTB = new TaskButton(
                        PdnResources.GetImageResource("Icons.MenuFileCloseIcon.png").Reference,
                        PdnResources.GetString("CloseWorkspaceAction.DontSaveButton.ActionText"),
                        PdnResources.GetString("CloseWorkspaceAction.DontSaveButton.ExplanationText"));

                    TaskButton cancelTB = new TaskButton(
                        PdnResources.GetImageResource("Icons.CancelIcon.png").Reference,
                        PdnResources.GetString("CloseWorkspaceAction.CancelButton.ActionText"),
                        PdnResources.GetString("CloseWorkspaceAction.CancelButton.ExplanationText"));

                    string title = PdnResources.GetString("CloseWorkspaceAction.Title");
                    string introTextFormat = PdnResources.GetString("CloseWorkspaceAction.IntroText.Format");
                    string introText = string.Format(introTextFormat, dw.GetFriendlyName());

                    Image taskImage = DrawRulerHelper.ResizeImage(appWorkspace.ActiveDocumentWorkspace.CompositionSurface.CreateAliasedBitmap(), 115, 86, Base.Enum.ThumbnailMode.Cut);

                    Form mainForm = appWorkspace.FindForm();
                    if (mainForm != null)
                    {
                        PdnBaseForm asPDF = mainForm as PdnBaseForm;

                        if (asPDF != null)
                        {
                            asPDF.RestoreWindow();
                        }
                    }

                    Icon warningIcon;
                    ImageResource warningIconImageRes = PdnResources.GetImageResource("Icons.WarningIcon.png");

                    if (warningIconImageRes != null)
                    {
                        Image warningIconImage = warningIconImageRes.Reference;
                        warningIcon = Utility.ImageToIcon(warningIconImage, false);
                    }
                    else
                    {
                        warningIcon = null;
                    }

                    TaskButton clickedTB = TaskDialog.Show(
                        appWorkspace,
                        warningIcon,
                        title,
                        taskImage,
                        false,
                        introText,
                        new TaskButton[] { saveTB, dontSaveTB, cancelTB },
                        saveTB,
                        cancelTB,
                        340,
                        false,
                        0,
                        out bool unuse);

                    if (clickedTB == saveTB)
                    {
                        if (dw.DoSaveNew())
                        {
                            this.cancelled = false;
                            if (!dw.IsDisposed)
                                appWorkspace.RemoveDocumentWorkspace(dw);
                        }
                        else
                        {
                            this.cancelled = true;
                        }
                    }
                    else if (clickedTB == dontSaveTB)
                    {
                        this.cancelled = false;
                        if (!dw.IsDisposed)
                            appWorkspace.RemoveDocumentWorkspace(dw);
                    }
                    else
                    {
                        this.cancelled = true;
                    }
                }
            }

            Utility.GCFullCollect();
        }

        public CloseWorkspaceAction() : this(null)
        {
        }

        public CloseWorkspaceAction(DocumentWorkspace closeMe)
        {
            this.closeMe = closeMe;
            this.cancelled = false;
        }
    }
}