Timeline/Entities/UserUtility.cs


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using System;
using System.Linq;
using Timeline.Entities;
using Timeline.Models;

namespace Timeline.Entities
{
    public static class UserUtility
    {
        public const string UserRole = "user";
        public const string AdminRole = "admin";

        public static string[] UserRoleArray { get; } = new string[] { UserRole };
        public static string[] AdminRoleArray { get; } = new string[] { UserRole, AdminRole };

        public static string[] IsAdminToRoleArray(bool isAdmin)
        {
            return isAdmin ? AdminRoleArray : UserRoleArray;
        }

        public static bool RoleArrayToIsAdmin(string[] roles)
        {
            return roles.Contains(AdminRole);
        }

        public static string[] RoleStringToRoleArray(string roleString)
        {
            return roleString.Split(',').ToArray();
        }

        public static string RoleArrayToRoleString(string[] roles)
        {
            return string.Join(',', roles);
        }

        public static string IsAdminToRoleString(bool isAdmin)
        {
            return RoleArrayToRoleString(IsAdminToRoleArray(isAdmin));
        }

        public static UserInfo CreateUserInfo(User user)
        {
            if (user == null)
                throw new ArgumentNullException(nameof(user));
            return new UserInfo(user.Name, RoleArrayToIsAdmin(RoleStringToRoleArray(user.RoleString)));
        }

    }
}