using AutoMapper;
using IM_API.Dtos.Group;
using IM_API.Models;
using IM_API.Services;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Moq;
using Xunit;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using MassTransit;
using IM_API.Configs;
using Microsoft.EntityFrameworkCore.Infrastructure;

namespace IM_API.Tests.Services
{
    public class GroupServiceTests
    {
        private readonly ImContext _context;
        private readonly IMapper _mapper;
        private readonly Mock<ILogger<GroupService>> _loggerMock = new();
        private readonly Mock<IPublishEndpoint> _publishMock = new();

        public GroupServiceTests()
        {
            // 1. 配置内存数据库
            var options = new DbContextOptionsBuilder<ImContext>()
                .UseInMemoryDatabase(databaseName: Guid.NewGuid().ToString())
                .Options;
            _context = new ImContext(options);

            // 2. 配置真实的 AutoMapper (ProjectTo 必须使用真实配置，不能用 Mock)
            var config = new MapperConfiguration(cfg =>
            {
                // 替换为你项目中真实的 Profile 类名
                cfg.AddProfile<MapperConfig>();
                // 如果有多个 Profile，可以继续添加或者加载整个程序集
                // cfg.AddMaps(typeof(GroupProfile).Assembly); 
            });
            _mapper = config.CreateMapper();
        }

        [Fact]
        public async Task GetGroupList_ShouldReturnPagedAndOrderedData()
        {
            // Arrange (准备数据)
            var userId = 1;
            var groups = new List<Group>
            {
                new Group { Id = 101, Name = "Group A", Avatar = "1111" },
                new Group { Id = 102, Name = "Group B" , Avatar = "1111"},
                new Group { Id = 103, Name = "Group C", Avatar = "1111" }
            };

            _context.Groups.AddRange(groups);
            _context.GroupMembers.AddRange(new List<GroupMember>
            {
                new GroupMember { UserId = userId, GroupId = 101 },
                new GroupMember { UserId = userId, GroupId = 102 },
                new GroupMember { UserId = userId, GroupId = 103 }
            });
            await _context.SaveChangesAsync();

            var userService = new Mock<UserService>();

            var service = new GroupService(_context, _mapper, _loggerMock.Object, _publishMock.Object,userService.Object);

            // Act (执行测试: 第1页，每页2条，倒序)
            var result = await service.GetGroupListAsync(userId, page: 1, limit: 2, desc: true);

            // Assert (断言)
            Assert.NotNull(result);
            Assert.Equal(2, result.Count);
            Assert.Equal(103, result[0].Id); // 倒序最大的是 103
            Assert.Equal(102, result[1].Id);
        }

        [Fact]
        public async Task GetGroupList_ShouldReturnEmpty_WhenUserHasNoGroups()
        {

            var userSerivce = new Mock<UserService>();
            // Arrange
            var service = new GroupService(_context, _mapper, _loggerMock.Object, _publishMock.Object, userSerivce.Object);

            // Act
            var result = await service.GetGroupListAsync(userId: 999, page: 1, limit: 10, desc: false);

            // Assert
            Assert.Empty(result);
        }
    }
}