using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using FluentAssertions;
using NUnit.Framework;
using Strata.Analytics.Biz.Extracts.Models;
using Strata.Analytics.Biz.Extracts.Services;
using Strata.Analytics.Models.Security;
using Strata.Analytics.Models.Utils;
using Strata.Analytics.Test.Unit.Biz.TestData;
using Strata.Testing.Categories;

namespace Strata.Analytics.Test.Unit.Biz.Extracts
{
    [NUnit.Framework.Category(TestCategory.Unit)]
    [Parallelizable(ParallelScope.Self)]
    public class ExtractRoleAssignmentTest
    {

        [Test]
        public async Task ExtractRoleAssignment_Created_GivenRoleAssignmentWithIdentityIsNotAlreadyInDatabase()
        {
            // arrange
            var claimsPrincipal = IClaimsPrincipalAccessorMock.GetClaimsPrincipalAccessor();
            var dbContext = AnalyticsDbContextMock.GetAnalyticsDbContext(claimsPrincipal);
            var extractService = new ExtractService(dbContext, claimsPrincipal, AutoMapperMock.GetAutoMapper());

            var batch = new Batch<ExtractRoleAssignmentSaveInfo, Guid>()
            {
                Updates = new List<ExtractRoleAssignmentSaveInfo>()
                {
                    new ExtractRoleAssignmentSaveInfo() { IdentityGuid = Guid.NewGuid(), IdentityName="Admin", IdentityType=IdentityType.User, Role=ExtractRole.Editor}
                }
            };

            // act
            await extractService.SaveRoleAssignmentsAsync(5, batch, CancellationToken.None);

            // assert
            dbContext.ExtractRoleAssignments.Should().HaveCount(1);
            dbContext.ExtractRoleAssignments.FirstOrDefault().ExtractId.Should().Be(5);
            dbContext.ExtractRoleAssignments.FirstOrDefault().IdentityGuid.Should().Be(batch.Updates.First().IdentityGuid);
            dbContext.ExtractRoleAssignments.FirstOrDefault().IdentityName.Should().Be(batch.Updates.First().IdentityName);
            dbContext.ExtractRoleAssignments.FirstOrDefault().Role.Should().Be(batch.Updates.First().Role);
        }

        [Test]
        public async Task ExtractRoleAssignment_Updated_GivenRoleAssignmentWithIdentityIsAlreadyInDatabase()
        {
            // arrange
            var strataId = 5;
            var claimsPrincipal = IClaimsPrincipalAccessorMock.GetClaimsPrincipalAccessor(strataId);
            var dbContext = AnalyticsDbContextMock.GetAnalyticsDbContext(claimsPrincipal);
            var extractService = new ExtractService(dbContext, claimsPrincipal, AutoMapperMock.GetAutoMapper());

            var existingRoleAssigment = new ExtractRoleAssignment() { StrataId = strataId, ExtractId = 5, IdentityGuid = Guid.NewGuid(), IdentityName = "Admin", IdentityType = IdentityType.User, Role = ExtractRole.Viewer };
            dbContext.ExtractRoleAssignments.Add(existingRoleAssigment);
            await dbContext.SaveChangesAsync();

            // change role to Editor
            var batch = new Batch<ExtractRoleAssignmentSaveInfo, Guid>()
            {
                Updates = new List<ExtractRoleAssignmentSaveInfo>()
                {
                    new ExtractRoleAssignmentSaveInfo() { IdentityGuid = existingRoleAssigment.IdentityGuid, IdentityName="Admin", IdentityType=IdentityType.User, Role=ExtractRole.Editor}
                }
            };

            // act
             await extractService.SaveRoleAssignmentsAsync(5, batch, CancellationToken.None);

            // assert
            dbContext.ExtractRoleAssignments.Should().HaveCount(1);
            dbContext.ExtractRoleAssignments.FirstOrDefault().ExtractId.Should().Be(5);
            dbContext.ExtractRoleAssignments.FirstOrDefault().IdentityGuid.Should().Be(batch.Updates.First().IdentityGuid);
            dbContext.ExtractRoleAssignments.FirstOrDefault().IdentityName.Should().Be(batch.Updates.First().IdentityName);
            dbContext.ExtractRoleAssignments.FirstOrDefault().Role.Should().Be(batch.Updates.First().Role);
        }

        [Test]
        public async Task ExtractRoleAssignment_Deleted_GivenIdentityGuidIsPartOfBatchDeletes()
        {
            // arrange
            var strataId = 5;
            var claimsPrincipal = IClaimsPrincipalAccessorMock.GetClaimsPrincipalAccessor(strataId);
            var dbContext = AnalyticsDbContextMock.GetAnalyticsDbContext(claimsPrincipal);
            var extractService = new ExtractService(dbContext, claimsPrincipal, AutoMapperMock.GetAutoMapper());

            var existingRoleAssigment = new ExtractRoleAssignment() { StrataId = strataId, ExtractId = 5, IdentityGuid = Guid.NewGuid(), IdentityName = "Admin", IdentityType = IdentityType.User, Role = ExtractRole.Editor };
            dbContext.ExtractRoleAssignments.Add(existingRoleAssigment);
            await dbContext.SaveChangesAsync();

            var batch = new Batch<ExtractRoleAssignmentSaveInfo, Guid>()
            {
                Deletes = new List<Guid>() { existingRoleAssigment.IdentityGuid }
            };

            // act
            await extractService.SaveRoleAssignmentsAsync(5, batch, CancellationToken.None);

            // assert
            dbContext.ExtractRoleAssignments.Should().HaveCount(0);
        }

    }
}