using System.Text;

namespace CustomComponents
{
    public partial class ListBoxObjects : UserControl
    {

        private string layoutString;

        private string startSymbol;

        private string endSymbol;
        public ListBoxObjects()
        {
            InitializeComponent();
        }


        public void SetLayoutInfo(string layout, string startS, string endS) 
        {
            if (layout == null || startS == null || endS == null) 
            {
                return;
            }
            layoutString = layout;
            startSymbol = startS;
            endSymbol = endS;
        }


        public int SelectedIndex
        {
            get {
                if (listBox.SelectedIndex == -1) 
                {
                    return -1;
                }
                return listBox.SelectedIndex; 
            }
            set {
                if (listBox.SelectedItems.Count != 0)
                {
                    listBox.SelectedIndex = value;
                }
            }
        }

        public T GetObjectFromStr<T>() where T : class, new()
        {
            string selStr = "";
            if (listBox.SelectedIndex != -1)
            {
                selStr = listBox.SelectedItem.ToString()!;
            }
            T curObject = new T();
            foreach (var property in typeof(T).GetProperties()) 
            {
                if (!property.CanWrite) 
                {
                    continue;
                }
                int borderOne = selStr.IndexOf(startSymbol);
                StringBuilder sb = new StringBuilder(selStr);
                sb[borderOne] = 'z';
                selStr = sb.ToString();
                int borderTwo = selStr.IndexOf(endSymbol);
                if (borderOne == -1 || borderTwo == -1) break;
                string propertyValue = selStr.Substring(borderOne + 1, borderTwo - borderOne - 1);
                selStr = selStr.Substring(borderTwo + 1);
                property.SetValue(curObject, Convert.ChangeType(propertyValue,property.PropertyType));
            }
            return curObject;
        }

        public void AddInListBox<T>(T entity)
        {
            if (layoutString == null || startSymbol == null || endSymbol == null)
            {
                throw new Exception("Заполните макетную строку");
            }

            if (!layoutString.Contains(startSymbol) || !layoutString.Contains(endSymbol))
            {
                throw new Exception("Макетная строка не содержит нужные элементы");
            }

            string str = layoutString;

            foreach (var prop in entity.GetType().GetProperties())
            {
                string str1 = $"{startSymbol}" + $"{prop.Name}" + $"{endSymbol}";
                str = str.Replace(str1, $"{startSymbol}" + prop.GetValue(entity).ToString() + $"{endSymbol}");
            }

            listBox.Items.Add(str);
        }
    }
}