Timeline/Models/Http/UserInfo.cs


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using AutoMapper;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Infrastructure;
using Microsoft.AspNetCore.Mvc.Routing;
using Timeline.Controllers;
using Timeline.Services;

namespace Timeline.Models.Http
{
    public interface IUserInfo
    {
        string Username { get; set; }
        string Nickname { get; set; }
        string AvatarUrl { get; set; }
    }

    public class UserInfo : IUserInfo
    {
        public string Username { get; set; } = default!;
        public string Nickname { get; set; } = default!;
        public string AvatarUrl { get; set; } = default!;
    }

    public class UserInfoForAdmin : IUserInfo
    {
        public string Username { get; set; } = default!;
        public string Nickname { get; set; } = default!;
        public string AvatarUrl { get; set; } = default!;
        public bool Administrator { get; set; }
    }

    public class UserInfoAvatarUrlValueResolver : IValueResolver<User, IUserInfo, string>
    {
        private readonly IActionContextAccessor _actionContextAccessor;
        private readonly IUrlHelperFactory _urlHelperFactory;

        public UserInfoAvatarUrlValueResolver()
        {
        }

        public UserInfoAvatarUrlValueResolver(IActionContextAccessor actionContextAccessor, IUrlHelperFactory urlHelperFactory)
        {
            _actionContextAccessor = actionContextAccessor;
            _urlHelperFactory = urlHelperFactory;
        }

        public string Resolve(User source, IUserInfo destination, string destMember, ResolutionContext context)
        {
            if (_actionContextAccessor == null)
            {
                return $"/users/{destination.Username}/avatar";
            }

            var urlHelper = _urlHelperFactory.GetUrlHelper(_actionContextAccessor.ActionContext);
            return urlHelper.ActionLink(nameof(UserAvatarController.Get), nameof(UserAvatarController), new { destination.Username });
        }
    }

    public class UserInfoAutoMapperProfile : Profile
    {
        public UserInfoAutoMapperProfile()
        {
            CreateMap<User, UserInfo>().ForMember(u => u.AvatarUrl, opt => opt.MapFrom<UserInfoAvatarUrlValueResolver>());
            CreateMap<User, UserInfoForAdmin>().ForMember(u => u.AvatarUrl, opt => opt.MapFrom<UserInfoAvatarUrlValueResolver>());
        }
    }
}