using AutoMapper;
using xModels.Dtos;
using xCommons.Extensions;
using xIdentityService.Interfaces;
using xIdentityService.Extensions;

namespace xAiApi.AI.Mppings
{
    /// <summary>
    /// an AutoMapper Value Resolver for Mapping TEntity to TDto 
    /// When TEntity Has OwnerId Property and Owner ... 
    /// </summary>
    /// <typeparam name="TEntity"></typeparam>
    /// <typeparam name="TDto"></typeparam>
    public abstract class XBaseOwnerMappingResolver<TEntity, TDto> : IValueResolver<TEntity, TDto, XPersonDto>
    where TDto : class
    where TEntity : class
    {
        //
        private string destPropertyName = "Owner";
        private string srcPropertyName = "OwnerId";
        private readonly IXIdentityProvider identityProvider;

        public XBaseOwnerMappingResolver(
            IXIdentityProvider identityProvider
        )
        {
            this.identityProvider = identityProvider;
        }

        public XPersonDto Resolve(
            TEntity source,
            TDto destination,
            XPersonDto destMember,
            ResolutionContext context
        )
        {
            //
            XPersonDto result = null;

            //
            // Check Source is not Null ...
            if (source.IsNull())
            {
                return result;
            }

            //
            // Check OwnerId Exists ...
            var isOwnerExists = source.HasProperty(srcPropertyName);
            if (!isOwnerExists)
            {
                return result;
            }

            //
            // Retrieve OwnerId from Source ...
            var ownerId = source.GetProperty<TEntity, string>(srcPropertyName);
            isOwnerExists = !ownerId.IsNullOrEmpty();
            if (!isOwnerExists)
            {
                return result;
            }

            //
            // Retrieve Private Trusted Device ...
            var device = identityProvider.GetDevice();

            //
            // Retrieve Specified OwnerId's UserInfo ...
            var userInfo = identityProvider.GetUserInfo(
                device: device,
                userSelectByParam: ownerId
            ).RunTask();

            //
            // Check UserInfo Exists ... 
            if (!userInfo.IsNullOrDefault())
            {
                //
                // Converts UserInfo to XPersonDto ...
                result = userInfo.ToXPersonDto();
            }

            //
            // Setting Dest Member ...
            destMember = result;

            //
            // Setting Destination Property Value ...
            destination.SetProperty(destPropertyName, result);

            //
            return result;
        }
    }
}