using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
using AutoMapper;
using NUnit.Framework;
using Strata.Analytics.Biz.DbContexts;
using Strata.Analytics.Biz.Workbooks.Services;
using Strata.Analytics.Models.Utils;
using Strata.Analytics.Models.Workbooks;
using Strata.Analytics.Test.Unit.Biz.TestData;
using Strata.CoreLib.Claims;
using Strata.CoreLib.Claims.Extensions;
using Strata.Testing.Categories;

namespace Strata.Analytics.Test.Unit.Biz.Workbooks
{
    [Category(TestCategory.Unit)]
    [Parallelizable(ParallelScope.Self)]
    public class WorkbookCrudTests
    {
        private IClaimsPrincipalAccessor _claimsPrincipalAccessor;
        private AnalyticsDbContext _dbContext;
        private IMapper _mapper;
        private WorkbookService _workbookService;

        [OneTimeSetUp]
        public void OneTimeSetup()
        {
            _claimsPrincipalAccessor = IClaimsPrincipalAccessorMock.GetClaimsPrincipalAccessor();
            _dbContext = AnalyticsDbContextMock.GetAnalyticsDbContext(_claimsPrincipalAccessor);
            _mapper = AutoMapperMock.GetAutoMapper();
            _workbookService = new WorkbookService(_dbContext, _claimsPrincipalAccessor, _mapper);
            _dbContext.Workbooks.AddRange(WorkbookTestData.Workbooks());
            _dbContext.Worksheets.AddRange(WorkbookTestData.Worksheets());
            _dbContext.SaveChanges();
        }

        [OneTimeTearDown]
        public async Task OneTimeTearDown()
        {
            await _dbContext.Database.EnsureDeletedAsync();
        }

        [Test, Order(1)]
        public async Task CanCreateWorkbook()
        {
            // arrange
            var workbookCreateInfo = new WorkbookCreateInfo
            {
                Name = "New",
                Description = "This is a New Workbook",
                DefaultDataSourceId = 1001
            };

            // act
            var result = await _workbookService.CreateAsync(workbookCreateInfo, CancellationToken.None);

            // assert
            Assert.IsNotNull(result);
            Assert.That(result.WorkbookId, Is.GreaterThan(WorkbookTestData.Workbooks().Max(wb => wb.WorkbookId)));
            Assert.That(result.Name, Is.EqualTo(workbookCreateInfo.Name));
            Assert.That(result.Description, Is.EqualTo(workbookCreateInfo.Description));
            Assert.That(result.DefaultDataSourceId, Is.EqualTo(workbookCreateInfo.DefaultDataSourceId));
            Assert.That(result.CreatedByUserGuid, Is.EqualTo(_claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid()));
            Assert.That(result.UpdatedByUserGuid, Is.EqualTo(_claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid()));

            Assert.That(result.Worksheets.Count(), Is.EqualTo(0));
        }

        [Test, Order(1)]
        public async Task CanCreateWorkbookWithSheets()
        {
            var newWorksheets = new List<WorksheetSaveInfo>();
            var worksheet1 = new WorksheetSaveInfo
            {
                Name = "New Worksheet",
                SortOrder = 3,
                WorksheetType = WorksheetType.Adhoc,
                Content = JsonDocument.Parse("{\"MyContent\": \"stuff goes here\"}")
            };
            var worksheet2 = new WorksheetSaveInfo
            {
                Name = "New Worksheet2",
                SortOrder = 4,
                WorksheetType = WorksheetType.Dashboard,
                Content = JsonDocument.Parse("{\"MyContent\": \"stuff2 goes here\"}")
            };
            newWorksheets.Add(worksheet1);
            newWorksheets.Add(worksheet2);
            // arrange
            var workbookCreateInfo = new WorkbookCreateInfo
            {
                Name = "New",
                Description = "This is a New Workbook",
                DefaultDataSourceId = 1001,
                Worksheets = newWorksheets
            };

            // act
            var result = await _workbookService.CreateAsync(workbookCreateInfo, CancellationToken.None);

            // assert
            Assert.IsNotNull(result);
            Assert.That(result.WorkbookId, Is.GreaterThan(WorkbookTestData.Workbooks().Max(wb => wb.WorkbookId)));
            Assert.That(result.Name, Is.EqualTo(workbookCreateInfo.Name));
            Assert.That(result.Description, Is.EqualTo(workbookCreateInfo.Description));
            Assert.That(result.DefaultDataSourceId, Is.EqualTo(workbookCreateInfo.DefaultDataSourceId));
            Assert.That(result.CreatedByUserGuid, Is.EqualTo(_claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid()));
            Assert.That(result.UpdatedByUserGuid, Is.EqualTo(_claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid()));

            Assert.That(result.Worksheets.Count(), Is.EqualTo(2));
        }


        [Test, Order(1)]
        public async Task CanUpdateWorkbook()
        {
            // arrange
            var workbookId = _dbContext.Workbooks.First().WorkbookId;
            await _workbookService.SaveRoleAssignmentsAsync(workbookId,
                new Batch<WorkbookRoleAssignmentSaveInfo, Guid>
                {
                    Updates = new WorkbookRoleAssignmentSaveInfo[]
                    {
                        new()
                        {
                            IdentityGuid = _claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid(),
                            Role = WorkbookRole.Editor
                        }
                    }
                }, CancellationToken.None);

            var workbook = await _workbookService.GetByIdAsync(workbookId, CancellationToken.None);

            var workbookSaveInfo = new WorkbookSaveInfo();
            _mapper.Map(workbook, workbookSaveInfo);

            var updatedWorksheet = workbook.Worksheets[1];
            updatedWorksheet.Name = "Updated WS Name";
            updatedWorksheet.Content = JsonDocument.Parse("{\"MyContent\": \"updated content here\"}");

            var newWorksheet = new WorksheetSaveInfo
            {
                Name = "New Worksheet",
                SortOrder = 3,
                WorksheetType = WorksheetType.Adhoc,
                Content = JsonDocument.Parse("{\"MyContent\": \"stuff goes here\"}")
            };

            var batch = new Batch<WorksheetSaveInfo, int>
            {
                Updates = new List<WorksheetSaveInfo> { _mapper.Map<WorksheetSaveInfo>(updatedWorksheet), newWorksheet },
                Deletes = new List<int> { workbook.Worksheets[0].WorksheetId }
            };


            workbookSaveInfo.WorksheetBatch = batch;
            _dbContext.ChangeTracker.Clear();


            // act
            var result = await _workbookService.UpdateAsync(workbook.WorkbookId, workbookSaveInfo, CancellationToken.None);

            // assert
            Assert.IsNotNull(result);
            Assert.That(result.WorkbookId, Is.EqualTo(workbook.WorkbookId));
            Assert.That(result.Name, Is.EqualTo(workbookSaveInfo.Name));
            Assert.That(result.Description, Is.EqualTo(workbookSaveInfo.Description));
            Assert.That(result.DefaultDataSourceId, Is.EqualTo(workbookSaveInfo.DefaultDataSourceId));
            Assert.That(result.CreatedByUserGuid, Is.EqualTo(workbook.CreatedByUserGuid));
            Assert.That(result.UpdatedByUserGuid, Is.EqualTo(_claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid()));
            Assert.That(result.CreatedDate, Is.EqualTo(workbook.CreatedDate));
            Assert.That(result.UpdatedDate, Is.EqualTo(DateTimeOffset.UtcNow).Within(500).Milliseconds); // this could fail in debug

            Assert.Multiple(() =>
            {
                foreach (var worksheetId in workbookSaveInfo.WorksheetBatch.Deletes)
                {
                    var resultWorksheet = result.Worksheets.FirstOrDefault(ws => ws.WorksheetId == worksheetId);
                    Assert.That(resultWorksheet, Is.Null);
                }

                foreach (var worksheetSaveInfo in workbookSaveInfo.WorksheetBatch.Updates)
                {
                    // get the worksheet - if it was added, grab the last
                    var resultWorksheet = worksheetSaveInfo.WorksheetId.HasValue ?
                        result.Worksheets.FirstOrDefault(ws => ws.WorksheetId == worksheetSaveInfo.WorksheetId) : result.Worksheets.LastOrDefault();

                    var expectedCreatedBy = worksheetSaveInfo.WorksheetId.HasValue
                        ? workbook.Worksheets.First(ws => ws.WorksheetId == worksheetSaveInfo.WorksheetId)
                            .CreatedByUserGuid
                        : _claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid();

                    var expectedUpdateBy = !worksheetSaveInfo.WorksheetId.HasValue || worksheetSaveInfo.WorksheetId == updatedWorksheet.WorksheetId
                        ? _claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid() : workbook.Worksheets
                        .First(ws => ws.WorksheetId == worksheetSaveInfo.WorksheetId)
                        .UpdatedByUserGuid;

                    Assert.That(resultWorksheet.WorkbookId, Is.EqualTo(workbook.WorkbookId));
                    Assert.That(resultWorksheet.Name, Is.EqualTo(worksheetSaveInfo.Name));
                    Assert.That(AnalyticsDbContextJsonSafe.JsonDocumentToString(resultWorksheet.Content), Is.EqualTo(AnalyticsDbContextJsonSafe.JsonDocumentToString(worksheetSaveInfo.Content)));
                    Assert.That(resultWorksheet.SortOrder, Is.EqualTo(worksheetSaveInfo.SortOrder));
                    Assert.That(resultWorksheet.CreatedByUserGuid, Is.EqualTo(expectedCreatedBy));
                    Assert.That(resultWorksheet.UpdatedByUserGuid, Is.EqualTo(expectedUpdateBy));
                }
            });
        }

        [Test, Order(int.MaxValue)] // always run last
        public async Task CanDeleteWorkbookAndCascadeToChildren()
        {
            // arrange
            var workbookId = _dbContext.Workbooks.First().WorkbookId;
            await _workbookService.SaveRoleAssignmentsAsync(workbookId,
                new Batch<WorkbookRoleAssignmentSaveInfo, Guid>
                {
                    Updates = new WorkbookRoleAssignmentSaveInfo[]
                    {
                        new()
                        {
                            IdentityGuid = _claimsPrincipalAccessor.GetCurrentClaimsPrincipal().GetUserGuid(),
                            Role = WorkbookRole.Editor
                        }
                    }
                }, CancellationToken.None);

            var workbook = await _workbookService.GetByIdAsync(workbookId, CancellationToken.None);

            Assert.That(workbook.Worksheets.Count, Is.GreaterThan(0));
            await _dbContext.SaveChangesAsync();
            _dbContext.ChangeTracker.Clear();


            // act
            await _workbookService.DeleteAsync(workbookId, CancellationToken.None);
            var deletedWorkbook = _dbContext.Workbooks.Where(wb => wb.WorkbookId == workbook.WorkbookId);
            var deletedWorksheets = _dbContext.Worksheets.Where(ws => ws.WorkbookId == workbook.WorkbookId);
            var deletedRoleAssignments = _dbContext.WorkbookRoleAssignments.Where(ra => ra.WorkbookId == workbook.WorkbookId);

            // assert
            Assert.That(deletedWorkbook, Is.Empty);
            Assert.That(deletedWorksheets, Is.Empty);
            Assert.That(deletedRoleAssignments, Is.Empty);
        }
    }
}