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path: root/Software/Visual_Studio/FSE/Modules/Tango.FSE.Procedures/Dialogs/UserInputDialogViewVM.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Tango.Core;
using Tango.FSE.Common;

namespace Tango.FSE.Procedures.Dialogs
{
    public class UserInputDialogViewVM : FSEDialogViewVM
    {
        public class Parameter
        {
            public PropertyInfo PropertyInfo { get; set; }
            public FieldInfo FieldInfo { get; set; }
            public String Name { get; set; }
            public String Value { get; set; }
        }

        public String Title { get; set; }
        public String Message { get; set; }
        public List<Parameter> Parameters { get; set; }
        public Object Model { get; set; }

        public UserInputDialogViewVM(String title, String message, Object model)
        {
            CanClose = false;
            Title = title;
            Message = message;
            Parameters = new List<Parameter>();
            Model = model;
        }

        public void Init()
        {
            try
            {
                if (Model.GetType().IsValueTypeOrString())
                {
                    Parameter p = new Parameter();
                    p.Value = Model.ToStringSafe();
                    p.Name = "Value";
                    Parameters.Add(p);
                }
                else
                {
                    foreach (var prop in Model.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public))
                    {
                        var att = prop.GetCustomAttribute<UserInput>();

                        Parameter p = new Parameter();
                        p.PropertyInfo = prop;
                        p.Name = att != null ? att.Name : prop.Name.ToTitle();
                        p.Value = prop.GetValue(Model).ToStringSafe();
                        Parameters.Add(p);
                    }

                    foreach (var field in Model.GetType().GetFields(BindingFlags.Instance | BindingFlags.Public))
                    {
                        var att = field.GetCustomAttribute<UserInput>();

                        Parameter p = new Parameter();
                        p.FieldInfo = field;
                        p.Name = att != null ? att.Name : field.Name.ToTitle();
                        p.Value = field.GetValue(Model).ToStringSafe();
                        Parameters.Add(p);
                    }
                }
            }
            catch (Exception ex)
            {
                throw new Exception("Error initializing the user input model.", ex);
            }
        }

        public void FinalizeModel()
        {
            if (Model.GetType().IsValueTypeOrString())
            {
                Model = Convert.ChangeType(Parameters.First().Value, Model.GetType());
            }
            else
            {
                foreach (var p in Parameters)
                {
                    if (p.PropertyInfo != null)
                    {
                        try
                        {
                            p.PropertyInfo.SetValue(Model, Convert.ChangeType(p.Value, p.PropertyInfo.PropertyType));
                        }
                        catch (Exception ex)
                        {
                            throw new ArgumentException($"Error setting the value '{p.Value}' for parameter '{p.PropertyInfo.Name}' of type '{p.PropertyInfo.PropertyType.Name}'.", ex);
                        }
                    }
                    else
                    {
                        try
                        {
                            p.FieldInfo.SetValue(Model, Convert.ChangeType(p.Value, p.FieldInfo.FieldType));
                        }
                        catch (Exception ex)
                        {
                            throw new ArgumentException($"Error setting the value '{p.Value}' for parameter '{p.FieldInfo.Name}' of type '{p.FieldInfo.FieldType.Name}'.", ex);
                        }
                    }
                }
            }
        }
    }
}