///////////////////////////////////////////////////////////////////////////////
// Copyright file = "LocalPaths.cs"                                          //
// Copyright (c) 2020 All Rights Reserved                                    //
// Authors: Francine Rotzetter / Robin Dittli                                //
// Date: 21/01/2020                                                          //
// Summary: Class representing static Paths                                  //
///////////////////////////////////////////////////////////////////////////////
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*/

using System;
using System.IO;
using System.Windows.Forms;

namespace THUMM
{
    // Saves path and path changes
    // Invoke Eventhandlers in SourcePath and DestinationPath
    public static class LocalPaths
    {
        //BackingFields with default directory 
        private static string _sourcePath = AppDomain.CurrentDomain.BaseDirectory;
        private static string _destinationPath = AppDomain.CurrentDomain.BaseDirectory;
        private static string _blenderInstallFolderPath = @"C:\Program Files\Blender Foundation\Blender 2.81";

        //SourcePath -> Direcotry
        public static string SourcePath
        {
            get { return _sourcePath; }
            set
            {
                
                if (!Directory.Exists(value))
                {
                    return;
                }
                else
                {
                    _sourcePath = value;
                    //Event Invoke OnSourcePathChanged
                    OnSourcePathChanged?.Invoke(SourcePath);
                }

            }
        }

        //Get the location where python files should be stored
        public static string PyFolderPath
        { get{ return SourcePath; } }


        //DestinationPath -> Direcotry
        public static string DestinationPath 
        {
            get { return _destinationPath; }
            set
            {
                
                if (!Directory.Exists(value))
                {
                    return;
                }

                else
                {
                    _destinationPath = value;
                    //Event Invoke OnDestinationPathChanged 
                    OnDestinationPathChanged?.Invoke(DestinationPath);     
                }
         
            }
        }

        //Set BlenderInstallFolder
        public static string BlenderInstallFolderPath
        {
            get { return _blenderInstallFolderPath; }
            set 
            {
               //Directory does NOT exist?
                if (!Directory.Exists(value))
                {
                    //yes
                    return;
                }

                //No 
                else
                {
                    //Get all "blender.exe" Files in Directory
                    string[] dirs = Directory.GetFiles(value, "blender.exe");
                        
                    //No "blender.exe" Files found (array is empty)?
                    if (dirs.Length == 0)

                    {
                            MessageBox.Show("This Directory does not contain a <blender.exe> executable! Please choose another Folder! ");
                            return;
                    
                    }

                    //Success "blender.exe" File was found!
                    //Set blender InstallPath
                    _blenderInstallFolderPath = value;

                    //Event Invoke OnDestinationPathChanged 
                    OnBlenderPathChanged?.Invoke(BlenderInstallFolderPath);

                    //Debug
                    foreach (string dir in dirs)
                    {
                        Console.WriteLine(dir);
                    }
                   
                }

            }
         }

        //Event creation
        public static event OnPathChangedHandler OnSourcePathChanged;
        public static event OnPathChangedHandler OnDestinationPathChanged;
        public static event OnPathChangedHandler OnBlenderPathChanged;

        //delegate
        public delegate void OnPathChangedHandler(string path);

    }
}