using System;
using xCommons.Extensions;
using xModels.Base;
using xModels.Dtos;

namespace xIdentityModels.Dtos
{
    /// <summary>
    /// a List of Available Open Actions ...
    /// </summary>
    public struct XOpenActions
    {
        public const string HandShake = "HandShake";
        public const string GetUserInfo = "GetUserInfo";
        public const string GetUserInfos = "GetUserInfos";
    }

    /// <summary>
    /// Open Actions Request Model ...
    /// </summary>
    public class XOpenActionRequestDto : XBaseDto
    {
        //
        public string Action { get; set; }
        public string Payload { get; set; }
        public string Checksum { get; set; }
        public XDeviceDto Device { get; set; }
        public string Timestamp { get; set; }

        /// <summary>
        /// Validate Model ...
        /// </summary>
        /// <returns></returns>
        public bool Validate()
        {
            //
            var result =
                !Device.IsNull() &&
                !Timestamp.IsNull() &&
                !Action.IsNullOrEmpty() &&
                (Action == XOpenActions.HandShake ||
                Action == XOpenActions.GetUserInfo ||
                Action == XOpenActions.GetUserInfos) &&
                !Int64.Parse(Timestamp).FromTimestamp().IsExPired();

            //
            return result;
        }

        /// <summary>
        /// Checksum Digest Model ...
        /// </summary>
        /// <returns></returns>
        public string ToOpenActionToken()
        {
            //
            var result = string.Empty;
            if (!Validate())
            {
                return result;
            }

            //
            var tmp = this;
            tmp.Checksum = string.Empty;

            //
            result = $"{tmp.ToJSON()}"
                .ToMd5String();
            return result;
        }

        /// <summary>
        /// Validate a Token is Correspond to Model or not ...
        /// </summary>
        /// <param name="token"></param>
        /// <returns></returns>
        public bool ValidateToken(string token)
        {
            //
            var result =
                Validate() &&
                !token.IsNullOrEmpty() &&
                token == ToOpenActionToken();

            //
            return result;
        }
    }

    /// <summary>
    /// aa Dto which used between Api's ...
    /// </summary>
    public class XOpenActionInnerDto : XBaseDto
    {
        public string Token { get; set; }
        public string Payload { get; set; }
    }

    /// <summary>
    /// User Info Providing in Open Actions ...
    /// </summary>
    public class XOpenActionUserInfoDto : XBaseDto
    {
        public string Username { get; set; }
        public string Firstname { get; set; }
        public string Lastname { get; set; }
        public string Avatar { get; set; }
    }
}