using BusinessLogic.Entities;
using BusinessLogic.Models;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Moq;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;

namespace BusinessLogic.UnitTests.Services.Transaction
{
    [TestClass]
    [ExcludeFromCodeCoverage]
    public class SavePendingTransactionTests : BaseTransactionTest
    {
        private void SetupUnitOfWork(bool setVatRate)
        {            
            MockUnitOfWork.Setup(x => x.PendingTransactions.AddRange(It.IsAny<IEnumerable<PendingTransaction>>()));

            var vat = new Entities.Vat()
            {
                VatCode = "V1",
                Percentage = setVatRate == true
                    ? (decimal?)17.5M
                    : null
            };

            MockUnitOfWork.Setup(x => x.Funds.GetByFundCode(
                It.IsAny<string>()))
                .Returns(new Entities.Fund()
                {
                    Vat = vat
                });

            MockUnitOfWork.Setup(x => x.Vats.GetVatByVatCode(
                It.IsAny<string>()))
                .Returns(vat);
        }

        private void SetupSecurityContext(bool result)
        {
            MockSecurityContext.Setup(x => x.IsInRole(It.IsAny<string>()))
                .Returns(result);
        }

        [TestMethod]
        public void ReturnsCorrectType()
        {
            // Arrange
            SetupUnitOfWork(true);
            SetupSecurityContext(true);
            var service = GetService();

            // Act
            var result = service.SavePendingTransaction(
                new PendingTransaction()
                {
                    AccountReference = "test",
                    FundCode = "F1",
                    VatCode = "V1",
                    Amount = 75
                }
                , "source");

            // Assert
            Assert.IsNotNull(result);
            Assert.IsInstanceOfType(result, typeof(Response));
            Assert.IsTrue(result.Success);
        }

        [TestMethod]
        public void IncorrectSecurityReturnsFailure()
        {
            // Arrange
            SetupSecurityContext(false);
            var service = GetService();

            // Act
            var result = service.SavePendingTransaction(new PendingTransaction(), "source");

            // Assert
            Assert.IsNull(result);
        }

        [TestMethod]
        public void FundCodePickedBySourceWhenPendingTransacionFundCodeIsEmpty()
        {
            // Arrange
            SetupUnitOfWork(true);
            SetupSecurityContext(true);
            var service = GetService();

            // Act
            var result = service.SavePendingTransaction(
                new PendingTransaction()
                {
                    AccountReference = "test"
                }
                , "source");

            // Assert
            Assert.IsNotNull(result);
            Assert.IsInstanceOfType(result, typeof(Response));
            Assert.IsTrue(result.Success);
        }

        [TestMethod]
        public void VatCodePickedByFundCodeWhenPendingTranscationHasNoVatCode()
        {
            // Arrange
            SetupUnitOfWork(true);
            SetupSecurityContext(true);
            var service = GetService();

            // Act
            var result = service.SavePendingTransaction(
                new PendingTransaction()
                {
                    AccountReference = "test",
                    FundCode = "F1",
                }
                , "source");

            // Assert
            Assert.IsNotNull(result);
            Assert.IsInstanceOfType(result, typeof(Response));
            Assert.IsTrue(result.Success);
        }

        [TestMethod]
        public void WhenVatPercentageIsNullZeroIsUsed()
        {
            // Arrange
            SetupUnitOfWork(false);
            SetupSecurityContext(true);
            var service = GetService();

            // Act
            var result = service.SavePendingTransaction(
                new PendingTransaction()
                {
                    AccountReference = "test",
                    FundCode = "F1",
                    Amount = 75
                }
                , "source");

            // Assert
            Assert.IsNotNull(result);
            Assert.IsInstanceOfType(result, typeof(Response));
            Assert.IsTrue(result.Success);
        }

        // TODO: Can't do this, as permissions are required in two methods!
        //[TestMethod]
        //public void CheckPermissions()
        //{
        //    // Arrange
        //    var roles = new List<string>() { Security.Role.TransactionSave, Security.Role.TransactionCreate, Security.Role.TransactionRefund, Security.Role.Payments };
        //    var service = GetService();
        //    SetupUnitOfWork(true);

        //    var helper = new PermissionTestHelper(
        //        MockSecurityContext,
        //        roles,
        //        () => {

        //            // Act
        //            var result = service.SavePendingTransaction(
        //                new TransactionsPending()
        //                {
        //                    Account_Reference = "test",
        //                    Fund_Code = "F1",
        //                    VAT_Code = "V1",
        //                    Amount = 75
        //                }
        //                , "source");

        //            // Assert
        //            Assert.IsNotNull(result);
        //            Assert.IsInstanceOfType(result, typeof(Response));
        //            Assert.IsTrue(result.Success);

        //        },
        //        () => {

        //            // Act
        //            var result = service.SavePendingTransaction(new TransactionsPending(), "source");

        //            // Assert
        //            Assert.IsNull(result);

        //        });

        //    // Act
        //    helper.CheckRoles();
        //}
    }
}