using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using NSubstitute;
using Util.Tests.Samples;
using Xunit;

namespace Util.Tests.Applications {
    /// <summary>
    /// 查询服务测试
    /// </summary>
    public class QueryServiceTest {
        /// <summary>
        /// Id
        /// </summary>
        private Guid _id;
        /// <summary>
        /// Id2
        /// </summary>
        private Guid _id2;
        /// <summary>
        /// 实体
        /// </summary>
        private EntitySample _entity;
        /// <summary>
        /// 实体2
        /// </summary>
        private EntitySample _entity2;
        /// <summary>
        /// 查询服务
        /// </summary>
        private QueryServiceSample _service;
        /// <summary>
        /// 仓储
        /// </summary>
        private IRepositorySample _repository;

        /// <summary>
        /// 测试初始化
        /// </summary>
        public QueryServiceTest() {
            _id = Guid.NewGuid();
            _id2 = Guid.NewGuid();
            _entity = new EntitySample( _id ) {Name = "A"};
            _entity2 = new EntitySample( _id2 ) { Name = "B" };
            _repository = Substitute.For<IRepositorySample>();
            _service = new QueryServiceSample( _repository );
        }

        /// <summary>
        /// 获取实体集合
        /// </summary>
        private List<EntitySample> GetEntities() {
            return new List<EntitySample>{ _entity , _entity2 };
        }

        /// <summary>
        /// 测试获取全部
        /// </summary>
        [Fact]
        public void TestGetAll() {
            _repository.FindAll().Returns( GetEntities() );
            var dtos = _service.GetAll();
            Assert.Equal( 2,dtos.Count );
            Assert.Equal( "A", dtos[0].Name );
            Assert.Equal( "B", dtos[1].Name );
        }

        /// <summary>
        /// 测试获取全部
        /// </summary>
        [Fact]
        public async Task TestGetAllAsync() {
            _repository.FindAllAsync().Returns( GetEntities() );
            var dtos = await _service.GetAllAsync();
            Assert.Equal( 2, dtos.Count );
            Assert.Equal( "A", dtos[0].Name );
            Assert.Equal( "B", dtos[1].Name );
        }

        /// <summary>
        /// 测试通过编号获取
        /// </summary>
        [Fact]
        public void TestGetById() {
            _repository.Find( _id ).Returns( _entity );
            var dto = _service.GetById( _id.ToString() );
            Assert.Equal( "A", dto.Name );
        }

        /// <summary>
        /// 测试通过编号获取
        /// </summary>
        [Fact]
        public async Task TestGetByIdAsync() {
            _repository.FindAsync( _id ).Returns( _entity );
            var dto = await _service.GetByIdAsync( _id.ToString() );
            Assert.Equal( "A", dto.Name );
        }

        /// <summary>
        /// 测试通过编号列表获取
        /// </summary>
        [Fact]
        public void TestGetByIds() {
            var ids = $"{_id},{_id2}";
            _repository.FindByIds( ids ).Returns( GetEntities() );
            var dtos = _service.GetByIds( ids );
            Assert.Equal( 2, dtos.Count );
            Assert.Equal( "A", dtos[0].Name );
            Assert.Equal( "B", dtos[1].Name );
        }

        /// <summary>
        /// 测试通过编号列表获取
        /// </summary>
        [Fact]
        public async Task TestGetByIdsAsync() {
            var ids = $"{_id},{_id2}";
            _repository.FindByIdsAsync( ids ).Returns( GetEntities() );
            var dtos = await _service.GetByIdsAsync( ids );
            Assert.Equal( 2, dtos.Count );
            Assert.Equal( "A", dtos[0].Name );
            Assert.Equal( "B", dtos[1].Name );
        }

        /// <summary>
        /// 测试查询
        /// </summary>
        [Fact]
        public void TestQuery_1() {
            var queryable = GetEntities().AsQueryable();
            _repository.Find().Returns( queryable );
            QueryParameterSample parameter = new QueryParameterSample();
            var dtos = _service.Query( parameter );
            Assert.Equal( 2, dtos.Count );
            Assert.Equal( "A", dtos[0].Name );
            Assert.Equal( "B", dtos[1].Name );
        }

        /// <summary>
        /// 测试查询
        /// </summary>
        [Fact]
        public void TestQuery_2() {
            var queryable = GetEntities().AsQueryable();
            _repository.Find().Returns( queryable );
            QueryParameterSample parameter = new QueryParameterSample();
            parameter.Name = "A";
            var dtos = _service.Query( parameter );
            Assert.Single( dtos);
            Assert.Equal( "A", dtos[0].Name );
        }

        /// <summary>
        /// 测试分页查询
        /// </summary>
        [Fact]
        public void TestPagerQuery_1() {
            var queryable = GetEntities().AsQueryable();
            _repository.Find().Returns( queryable );
            QueryParameterSample parameter = new QueryParameterSample();
            parameter.Order = "Name";
            var result = _service.PagerQuery( parameter );
            Assert.Equal( 2, result.TotalCount );
            Assert.Equal( "A", result[0].Name );
            Assert.Equal( "B", result[1].Name );
        }

        /// <summary>
        /// 测试分页查询
        /// </summary>
        [Fact]
        public void TestPagerQuery_2() {
            var queryable = GetEntities().AsQueryable();
            _repository.Find().Returns( queryable );
            QueryParameterSample parameter = new QueryParameterSample();
            parameter.Name = "B";
            var result = _service.PagerQuery( parameter );
            Assert.Equal( 1, result.TotalCount );
            Assert.Equal( "B", result[0].Name );
        }
    }
}