using System;
using System.Collections.Generic;
using Moq;
using Xunit;
using LCU.API.Collections.CollectionsApi.Services;
using LCU.API.Collections.CollectionsApi.Exceptions;
using System.Threading.Tasks;
using LCU.API.Collections.CollectionsApi.Dao;
using LCU.API.Collections.CollectionsApiLib.Models;
using LCU.API.Collections.TemenosApiWrapper.Services;
using LCU.API.Collections.CollectionsApi.Models.TemenosApiWrapper;

namespace LCU.API.Collections.CollectionsApiTests.ServiceTests
{
    public class AccountServiceTest
    {
        private Mock<ITemenosAccountDao> _mockTemenosAccountDao;
        private AccountService _accountService;
        private Mock<ITemenosApiWrapperService> _mockTemenosApiWrapperService;

        public AccountServiceTest()
        {
            _mockTemenosAccountDao = new Mock<ITemenosAccountDao>();
            _mockTemenosApiWrapperService = new Mock<ITemenosApiWrapperService>();
            _accountService = new AccountService(_mockTemenosAccountDao.Object, _mockTemenosApiWrapperService.Object);
        }

        [Fact]
        public async void ListByAccountNo_Ok()
        {
            //setup
            _mockTemenosAccountDao.Setup(dao => dao.ListByAccountNoAsync(It.IsAny<string>(), It.IsAny<string>())).ReturnsAsync(
                new List<CollectionsApiLib.Models.TemenosAccount>()
                {
                    new CollectionsApiLib.Models.TemenosAccount()
                    {
                        AccountId = 1234,
                        AccountNumber = "123"
                    }
                });

            _mockTemenosApiWrapperService.Setup(service => service.AccountSearch(It.IsAny<AccountSearchRequest>())).ReturnsAsync(
                new List<AccountSearchResponse>()
                {
                    new AccountSearchResponse()
                    {
                        InternalAccountNumber = "232354254425443",
                        AccountAccountNumber = "123"
                    }
                });

            var result = await _accountService.ListByAccountNoAsync("123");

            Assert.NotNull(result);
            Assert.Single(result);
        }

        [Fact]
        public async void ListByAccountNoTemenosApiWrapperService_Exception()
        {
            //setup
            _mockTemenosApiWrapperService.Setup(service => service.AccountSearch(It.IsAny<AccountSearchRequest>()))
                .Throws(new Exception("Oops"));

            var exc = await Assert.ThrowsAsync<AggregateException>(() => _accountService.ListByAccountNoAsync("123"));

            Assert.NotNull(exc);
        }

        [Fact]
        public async void ListByAccountNo_Exception()
        {
            //setup
            _mockTemenosAccountDao.Setup(dao => dao.ListByAccountNoAsync(It.IsAny<string>(), It.IsAny<string>()))
                .Throws(new Exception("Oops"));

            var exc = await Assert.ThrowsAsync<Exception>(() => _accountService.ListByAccountNoAsync("123"));

            Assert.NotNull(exc);
        }

        [Fact]
        public async void Get_OK()
        {
            //setup
            _mockTemenosAccountDao.Setup(dao => dao.FindByIdAsync(It.IsAny<int>())).ReturnsAsync(
                new CollectionsApiLib.Models.TemenosAccount()
                {
                    AccountId = 1234,
                    AccountNumber = "123"
                }
            );

            var result = await _accountService.FindByIdAsync(123);

            Assert.NotNull(result);
            Assert.Equal(1234, result.AccountId);
        }

        [Fact]
        public async void Get_Server_Exception()
        {
            //setup
            _mockTemenosAccountDao.Setup(dao => dao.FindByIdAsync(It.IsAny<int>())).ThrowsAsync(new Exception("Oops"));
            var result = await Assert.ThrowsAsync<ServerErrorException>(() => _accountService.FindByIdAsync(123));

            Assert.NotNull(result);
        }

        [Fact]
        public async void Get_NotFound()
        {
            //setup
            _mockTemenosAccountDao.Setup(dao => dao.FindByIdAsync(It.IsAny<int>()))
                .Returns(Task.FromResult<CollectionsApiLib.Models.TemenosAccount>(null));

            var result = await Assert.ThrowsAsync<NotFoundException>(() => _accountService.FindByIdAsync(123));

            Assert.NotNull(result);
            Assert.Equal("Account with id 123 not found.", result.Message);
        }


        [Fact]
        public async void GetHistory_OK()
        {
            const int accountId = 111;
            //setup
            _mockTemenosAccountDao.Setup(dao => dao.FindCommentsAsync(accountId)).ReturnsAsync(
                new List<TemenosHistory>()
                {
                    new TemenosHistory()
                    {
                        Created = DateTime.Now,
                        Message = "Comment",
                        Type = HistoryType.Comment,
                        UserId = 10
                    }
                }
            );

            _mockTemenosAccountDao.Setup(dao => dao.FindHistoryAsync(accountId)).ReturnsAsync(
                new List<TemenosHistory>()
                {
                    new TemenosHistory()
                    {
                        Created = DateTime.Now,
                        Message = "Workflow",
                        Type = HistoryType.Workflow,
                        UserId = 10
                    }
                }
            );

            var result = await _accountService.GetHistoryByAccountIdAsync(accountId);

            Assert.NotNull(result);
            Assert.Equal(2, result.Count);
        }
    }
}