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

namespace OFBButte.Application.Configuration
{
    public class Permission
    {
        public string Value { get; private set; }
        private Permission(string permission)
        {
            Value = permission;
        }

        public static Permission AddProfile { get; } = new Permission("Add Profile");

        private static Dictionary<string, Permission> values = typeof(Permission).GetProperties(System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static).Where(p => p.PropertyType == typeof(Permission)).ToDictionary(p => p.Name, p => (Permission)p.GetValue(null));
        public static bool TryCast(string input, out Permission permission)
        {
            permission = null;
            if (values.TryGetValue(input, out Permission perm))
            {
                permission = perm;
                return true;
            }
            return false;
        }

        public static implicit operator string(Permission input)
        {
            return input.Value;
        }

        public static explicit operator Permission(string input)
        {
            if (TryCast(input, out Permission permission))
            {
                return permission;
            } else
            {
                throw new InvalidCastException($"Could not cast {input} to {typeof(Permission).ToString()}");
            }
        }
    }
}