using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using LCU.API.Internal.Operations.IncentiveApi.Services;
using LCU.Library.Internal.IncentiveApiModels.Entities;
using Microsoft.AspNetCore.Mvc;
using Moq;
using NUnit.Framework;
using LCU.API.Internal.Operations.IncentiveApi.Controllers;
using LCU.API.Internal.Operations.IncentiveApiLib.Services;
using LCU.API.Internal.Operations.IncentiveApiLib.Persistence;
using LCU.API.Internal.Operations.IncentiveApi.Exceptions;
using LCU.API.Internal.Operations.IncentiveApi.Models;

namespace Application.UnitTests.Controllers
{
    public class DepartmentControllerTest
    {
        private DepartmentController _controller;
        private IDepartmentService _mockDepartmentService;
        private  IUserService _userService;
        private  ICurrentUserService _currentUser;

        [SetUp]
        public void Setup()
        {
            _mockDepartmentService = Mock.Of<IDepartmentService>();
            _userService = Mock.Of<IUserService>();
            _currentUser = Mock.Of<ICurrentUserService>();
            _controller = new DepartmentController(_mockDepartmentService, _userService, _currentUser);
        }

        [Test]
        public async Task GetAll_OK()
        {
           Mock.Get(_mockDepartmentService).Setup(service => service.GetAllDepartmentsAsync()).ReturnsAsync(
                new List<Department>()
                {
                    new Department()
                    {
                        Id = 0
                    }
                });

            var result = await _controller.GetDepartments(null,null);
            Assert.NotNull(result);

            var okResult = result as OkObjectResult;
            Assert.NotNull(okResult);
            Assert.AreEqual(200, okResult.StatusCode);
        }

        [Test]
        public async Task GetAll_Exception()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.GetAllDepartmentsAsync())
                .ThrowsAsync(new Exception("Oops"));

            var result = await _controller.GetDepartments(null, null);
            Assert.NotNull(result);

            var statusRes = result as StatusCodeResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(500, statusRes.StatusCode);
        }

        [Test]
        public async Task GetById_OK()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.GetDepartmentByIdAsync(It.IsAny<int>()))
                .ReturnsAsync(new Department() { Id = 5 });

                var result = await _controller.GetDepartmentById(0);
            Assert.NotNull(result);

            var okResult = result as OkObjectResult;
            Assert.NotNull(okResult);
            Assert.AreEqual(200, okResult.StatusCode);
        }

        [Test]
        public async Task GetById_NotFound()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.GetDepartmentByIdAsync(It.IsAny<int>()))
                .ThrowsAsync(new NotFoundException("Oops"));

            var result = await _controller.GetDepartmentById(5);
            ;
            Assert.NotNull(result);

            var statusRes = result as NotFoundObjectResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(404, statusRes.StatusCode);
        }

        [Test]
        public async Task GetById_Exception()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.GetDepartmentByIdAsync(It.IsAny<int>()))
                .ThrowsAsync(new Exception("Oops"));

            var result = await _controller.GetDepartmentById(5);
            Assert.NotNull(result);

            var statusRes = result as StatusCodeResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(500, statusRes.StatusCode);
        }

        [Test]
        public async Task CreateDepartment_OK()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.SaveDepartmentAsync(It.IsAny<Department>()))
                .ReturnsAsync(new Department() {Id = 5});

            var result = await _controller.CreateDepartment(new Department() {DepartmentName = "Test"});
            Assert.NotNull(result);

            var okResult = result as OkObjectResult;
            Assert.NotNull(okResult);
            Assert.AreEqual(200, okResult.StatusCode);
        }

        [Test]
        public async Task CreateDepartment_Exception()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.SaveDepartmentAsync(It.IsAny<Department>()))
                .ThrowsAsync(new Exception("Oops"));

            var result = await _controller.CreateDepartment(new Department() {DepartmentName = "Test"});
            Assert.NotNull(result);

            var statusRes = result as StatusCodeResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(500, statusRes.StatusCode);
        }

        [Test]
        public async Task CreateDepartment_DuplicateName()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.SaveDepartmentAsync(It.IsAny<Department>()))
                .ThrowsAsync(new DuplicateDataException("Oops"));

            var result = await _controller.CreateDepartment(new Department() {DepartmentName = "Test"});
            Assert.NotNull(result);

            var statusRes = result as BadRequestObjectResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(400, statusRes.StatusCode);
        }

        [Test]
        public async Task UpdateDepartment_OK()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.UpdateDepartmentAsync(It.IsAny<Department>(), It.IsAny<int>()))
                .ReturnsAsync(new Department() {Id = 5});

            var result = await _controller.UpdateDepartment(new Department() {DepartmentName = "Test"}, 3);
            Assert.NotNull(result);

            var okResult = result as OkObjectResult;
            Assert.NotNull(okResult);
            Assert.AreEqual(200, okResult.StatusCode);
        }

        [Test]
        public async Task UpdateDepartment_Exception()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.UpdateDepartmentAsync(It.IsAny<Department>(), It.IsAny<int>()))
                .ThrowsAsync(new Exception("Oops"));

            var result = await _controller.UpdateDepartment(new Department() {DepartmentName = "Test"}, 3);
            Assert.NotNull(result);

            var statusRes = result as StatusCodeResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(500, statusRes.StatusCode);
        }

        [Test]
        public async Task UpdateDepartment_NotFound()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.UpdateDepartmentAsync(It.IsAny<Department>(), It.IsAny<int>()))
                .ThrowsAsync(new NotFoundException("Oops"));

            var result = await _controller.UpdateDepartment(new Department() {DepartmentName = "Test"}, 3);
            Assert.NotNull(result);

            var statusRes = result as NotFoundObjectResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(404, statusRes.StatusCode);
        }

        [Test]
        public async Task UpdateDepartment_DuplicateName()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.UpdateDepartmentAsync(It.IsAny<Department>(), It.IsAny<int>()))
                .ThrowsAsync(new DuplicateDataException("Oops"));

            var result = await _controller.UpdateDepartment(new Department() {DepartmentName = "Test"}, 3);
            Assert.NotNull(result);

            var statusRes = result as BadRequestObjectResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(400, statusRes.StatusCode);
        }

        [Test]
        public async Task GetDepartmentDetails_OK()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.GetDepartmentDetailsAsync(It.IsAny<int>()))
                .ReturnsAsync(new DepartmentDetails {
                    Department = new Department { Id = 3 },
                    Assignments = new List<UserDepartment> { new UserDepartment(), new UserDepartment() },
                    RegionalManager = new AppUser { EmployeeId = "C0000" }
                });

            var result = await _controller.GetDepartmentDetails(3);
            Assert.NotNull(result);

            var okResult = result as OkObjectResult;
            Assert.NotNull(okResult);
            Assert.AreEqual(200, okResult.StatusCode);
        }

        [Test]
        public async Task GetDepartmentDetails_Exception()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.GetDepartmentDetailsAsync( It.IsAny<int>()))
                .ThrowsAsync(new Exception("Oops"));

            var result = await _controller.GetDepartmentDetails(3);
            Assert.NotNull(result);

            var statusRes = result as StatusCodeResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(500, statusRes.StatusCode);
        }

        [Test]
        public async Task GetDepartmentDetails_NotFound()
        {
            Mock.Get(_mockDepartmentService).Setup(service => service.GetDepartmentDetailsAsync(It.IsAny<int>()))
                .ThrowsAsync(new NotFoundException("Oops"));

            var result = await _controller.GetDepartmentDetails(3);
            Assert.NotNull(result);

            var statusRes = result as NotFoundObjectResult;
            Assert.NotNull(statusRes);
            Assert.AreEqual(404, statusRes.StatusCode);
        }
    }
}