using Marco.Pms.DataAccess.Data;
using Marco.Pms.Model.Activities;
using Marco.Pms.Model.Dtos.Project;
using Marco.Pms.Model.Employees;
using Marco.Pms.Model.Entitlements;
using Marco.Pms.Model.Mapper;
using Marco.Pms.Model.Projects;
using Marco.Pms.Model.Utilities;
using Marco.Pms.Model.ViewModels.Employee;
using Marco.Pms.Model.ViewModels.Projects;
using Marco.Pms.Services.Hubs;
using MarcoBMS.Services.Helpers;
using MarcoBMS.Services.Service;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
using Microsoft.EntityFrameworkCore;

namespace MarcoBMS.Services.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    [Authorize]
    public class ProjectController : ControllerBase
    {
        private readonly ApplicationDbContext _context;
        private readonly UserHelper _userHelper;
        private readonly ILoggingService _logger;
        private readonly RolesHelper _rolesHelper;
        private readonly ProjectsHelper _projectsHelper;
        private readonly IHubContext<MarcoHub> _signalR;


        public ProjectController(ApplicationDbContext context, UserHelper userHelper, ILoggingService logger, RolesHelper rolesHelper, ProjectsHelper projectHelper, IHubContext<MarcoHub> signalR)
        {
            _context = context;
            _userHelper = userHelper;
            _logger = logger;
            _rolesHelper = rolesHelper;
            _projectsHelper = projectHelper;
            _signalR = signalR;

        }

        [HttpGet("list/basic")]
        public async Task<IActionResult> GetAllProjects()
        {
            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }
            Guid tenantId = _userHelper.GetTenantId();
            var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();

            // Defensive check for null employee (important for robust APIs)
            if (LoggedInEmployee == null)
            {
                return Unauthorized(ApiResponse<object>.ErrorResponse("Employee not found.", null, 401));
            }


            List<Project> projects = await _projectsHelper.GetMyProjects(tenantId, LoggedInEmployee);


            // 4. Project projection to ProjectInfoVM
            // This part is already quite efficient.
            // Ensure ToProjectInfoVMFromProject() is also optimized and doesn't perform N+1 queries.
            // If ProjectInfoVM only needs a subset of Project properties,
            // you can use a LINQ Select directly on the IQueryable before ToListAsync()
            // to fetch only the required columns from the database.
            List<ProjectInfoVM> response = projects
                .Select(project => project.ToProjectInfoVMFromProject())
                .ToList();


            //List<ProjectInfoVM> response = new List<ProjectInfoVM>();

            //foreach (var project in projects)
            //{
            //    response.Add(project.ToProjectInfoVMFromProject());
            //}

            return Ok(ApiResponse<object>.SuccessResponse(response, "Success.", 200));
        }

        [HttpGet("list")]
        public async Task<IActionResult> GetAll()
        {
            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }
            Guid tenantId = _userHelper.GetTenantId();
            var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            //List<FeaturePermission> featurePermission = await _rolesHelper.GetFeaturePermissionByEmployeeID(LoggedInEmployee.Id);
            //string[] projectsId = [];
            //List<Project> projects = new List<Project>();

            ///* User with permission manage project  can see all projects */
            //if (featurePermission != null && featurePermission.Exists(c => c.Id.ToString() == "172fc9b6-755b-4f62-ab26-55c34a330614"))
            //{
            //    projects = await _projectsHelper.GetAllProjectByTanentID(LoggedInEmployee.TenantId);
            //}
            //else
            //{
            //    List<ProjectAllocation> allocation = await _projectsHelper.GetProjectByEmployeeID(LoggedInEmployee.Id);
            //    projectsId = allocation.Select(c => c.ProjectId.ToString()).ToArray();
            //    projects = await _context.Projects.Where(c => projectsId.Contains(c.Id.ToString()) && c.TenantId == tenantId).ToListAsync();
            //}

            List<Project> projects = await _projectsHelper.GetMyProjects(tenantId, LoggedInEmployee);




            List<ProjectListVM> response = new List<ProjectListVM>();
            foreach (var project in projects)
            {
                var result = project.ToProjectListVMFromProject();
                var team = await _context.ProjectAllocations.Where(p => p.TenantId == tenantId && p.ProjectId == project.Id && p.IsActive == true).ToListAsync();

                result.TeamSize = team.Count();

                List<Building> buildings = await _context.Buildings.Where(b => b.ProjectId == project.Id && b.TenantId == tenantId).ToListAsync();
                List<Guid> idList = buildings.Select(b => b.Id).ToList();

                List<Floor> floors = await _context.Floor.Where(f => idList.Contains(f.BuildingId) && f.TenantId == tenantId).ToListAsync();
                idList = floors.Select(f => f.Id).ToList();

                List<WorkArea> workAreas = await _context.WorkAreas.Where(a => idList.Contains(a.FloorId) && a.TenantId == tenantId).ToListAsync();
                idList = workAreas.Select(a => a.Id).ToList();

                List<WorkItem> workItems = await _context.WorkItems.Where(i => idList.Contains(i.WorkAreaId) && i.TenantId == tenantId).Include(i => i.ActivityMaster).ToListAsync();
                double completedTask = 0;
                double plannedTask = 0;
                foreach (var workItem in workItems)
                {
                    completedTask += workItem.CompletedWork;
                    plannedTask += workItem.PlannedWork;
                }
                result.PlannedWork = plannedTask;
                result.CompletedWork = completedTask;
                response.Add(result);
            }

            return Ok(ApiResponse<object>.SuccessResponse(response, "Success.", 200));
        }

        [HttpGet("get/{id}")]
        public async Task<IActionResult> Get([FromRoute] Guid id)
        {
            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }

            var project = await _context.Projects.Where(c => c.TenantId == _userHelper.GetTenantId() && c.Id == id).SingleOrDefaultAsync();
            if (project == null) return NotFound(ApiResponse<object>.ErrorResponse("Project not found", "Project not found", 404));
            return Ok(ApiResponse<object>.SuccessResponse(project, "Success.", 200));
        }

        [HttpGet("details/{id}")]
        public async Task<IActionResult> Details([FromRoute] Guid id)
        {
            // ProjectDetailsVM vm = new ProjectDetailsVM();

            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }

            var project = await _context.Projects.Where(c => c.TenantId == _userHelper.GetTenantId() && c.Id == id).Include(c => c.ProjectStatus).SingleOrDefaultAsync(); // includeProperties: "ProjectStatus,Tenant"); //_context.Stock.FindAsync(id);

            if (project == null)
            {
                return NotFound(ApiResponse<object>.ErrorResponse("Project not found", "Project not found", 404));

            }
            else
            {
                //var project = projects.Where(c => c.Id == id).SingleOrDefault();
                ProjectDetailsVM vm = await GetProjectViewModel(id, project);

                ProjectVM projectVM = new ProjectVM();
                if (vm.project != null)
                {
                    projectVM.Id = vm.project.Id;
                    projectVM.Name = vm.project.Name;
                    projectVM.ShortName = vm.project.ShortName;
                    projectVM.ProjectAddress = vm.project.ProjectAddress;
                    projectVM.ContactPerson = vm.project.ContactPerson;
                    projectVM.StartDate = vm.project.StartDate;
                    projectVM.EndDate = vm.project.EndDate;
                    projectVM.ProjectStatusId = vm.project.ProjectStatusId;
                }
                projectVM.Buildings = new List<BuildingVM>();
                if (vm.buildings != null)
                {
                    foreach (Building build in vm.buildings)
                    {
                        BuildingVM buildVM = new BuildingVM() { Id = build.Id, Description = build.Description, Name = build.Name };
                        buildVM.Floors = new List<FloorsVM>();
                        if (vm.floors != null)
                        {
                            foreach (Floor floorDto in vm.floors.Where(c => c.BuildingId == build.Id).ToList())
                            {
                                FloorsVM floorVM = new FloorsVM() { FloorName = floorDto.FloorName, Id = floorDto.Id };
                                floorVM.WorkAreas = new List<WorkAreaVM>();

                                if (vm.workAreas != null)
                                {
                                    foreach (WorkArea workAreaDto in vm.workAreas.Where(c => c.FloorId == floorVM.Id).ToList())
                                    {
                                        WorkAreaVM workAreaVM = new WorkAreaVM() { Id = workAreaDto.Id, AreaName = workAreaDto.AreaName, WorkItems = new List<WorkItemVM>() };

                                        if (vm.workItems != null)
                                        {
                                            foreach (WorkItem workItemDto in vm.workItems.Where(c => c.WorkAreaId == workAreaDto.Id).ToList())
                                            {
                                                WorkItemVM workItemVM = new WorkItemVM() { WorkItemId = workItemDto.Id, WorkItem = workItemDto };

                                                workItemVM.WorkItem.WorkArea = new WorkArea();

                                                if (workItemVM.WorkItem.ActivityMaster != null)
                                                {
                                                    workItemVM.WorkItem.ActivityMaster.Tenant = new Tenant();
                                                }
                                                workItemVM.WorkItem.Tenant = new Tenant();

                                                double todaysAssigned = 0;
                                                if (vm.Tasks != null)
                                                {
                                                    var tasks = vm.Tasks.Where(t => t.WorkItemId == workItemDto.Id).ToList();
                                                    foreach (TaskAllocation task in tasks)
                                                    {
                                                        todaysAssigned += task.PlannedTask;
                                                    }
                                                }
                                                workItemVM.TodaysAssigned = todaysAssigned;

                                                workAreaVM.WorkItems.Add(workItemVM);
                                            }
                                        }

                                        floorVM.WorkAreas.Add(workAreaVM);
                                    }
                                }

                                buildVM.Floors.Add(floorVM);
                            }
                        }
                        projectVM.Buildings.Add(buildVM);
                    }
                }
                return Ok(ApiResponse<object>.SuccessResponse(projectVM, "Success.", 200));
            }


        }

        private async Task<ProjectDetailsVM> GetProjectViewModel(Guid? id, Project project)
        {
            ProjectDetailsVM vm = new ProjectDetailsVM();

            // List<Building> buildings = _unitOfWork.Building.GetAll(c => c.ProjectId == id).ToList();
            List<Building> buildings = await _context.Buildings.Where(c => c.ProjectId == id).ToListAsync();
            List<Guid> idList = buildings.Select(o => o.Id).ToList();
            // List<Floor> floors = _unitOfWork.Floor.GetAll(c => idList.Contains(c.Id)).ToList();
            List<Floor> floors = await _context.Floor.Where(c => idList.Contains(c.BuildingId)).ToListAsync();
            idList = floors.Select(o => o.Id).ToList();
            //List<WorkArea> workAreas = _unitOfWork.WorkArea.GetAll(c => idList.Contains(c.Id), includeProperties: "WorkItems,WorkItems.ActivityMaster").ToList();

            List<WorkArea> workAreas = await _context.WorkAreas.Where(c => idList.Contains(c.FloorId)).ToListAsync();

            idList = workAreas.Select(o => o.Id).ToList();
            List<WorkItem> workItems = await _context.WorkItems.Include(c => c.WorkCategoryMaster).Where(c => idList.Contains(c.WorkAreaId)).Include(c => c.ActivityMaster).ToListAsync();
            //  List <WorkItem> workItems = _unitOfWork.WorkItem.GetAll(c => idList.Contains(c.WorkAreaId), includeProperties: "ActivityMaster").ToList();
            idList = workItems.Select(t => t.Id).ToList();
            List<TaskAllocation> tasks = await _context.TaskAllocations.Where(t => idList.Contains(t.WorkItemId) && t.AssignmentDate.Date == DateTime.UtcNow.Date).ToListAsync();
            vm.project = project;
            vm.buildings = buildings;
            vm.floors = floors;
            vm.workAreas = workAreas;
            vm.workItems = workItems;
            vm.Tasks = tasks;
            return vm;
        }

        private Guid GetTenantId()
        {
            return _userHelper.GetTenantId();
            //var tenant = User.FindFirst("TenantId")?.Value;
            //return (tenant != null ? Convert.ToInt32(tenant) : 1);
        }

        [HttpPost]
        public async Task<IActionResult> Create([FromBody] CreateProjectDto projectDto)
        {
            var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }

            Guid TenantId = GetTenantId();
            var project = projectDto.ToProjectFromCreateProjectDto(TenantId);

            _context.Projects.Add(project);

            await _context.SaveChangesAsync();
            var notification = new { LoggedInUserId = LoggedInEmployee.Id, Keyword = "Create_Project", Response = project.ToProjectDto() };

            await _signalR.Clients.All.SendAsync("NotificationEventHandler", notification);

            return Ok(ApiResponse<object>.SuccessResponse(project.ToProjectDto(), "Success.", 200));
        }

        [HttpPut]
        [Route("update/{id}")]
        public async Task<IActionResult> Update([FromRoute] Guid id, [FromBody] UpdateProjectDto updateProjectDto)
        {
            var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }
            try
            {
                Guid TenantId = GetTenantId();

                Project project = updateProjectDto.ToProjectFromUpdateProjectDto(TenantId, id);
                _context.Projects.Update(project);

                await _context.SaveChangesAsync();

                var notification = new { LoggedInUserId = LoggedInEmployee.Id, Keyword = "Update_Project", Response = project.ToProjectDto() };

                await _signalR.Clients.All.SendAsync("NotificationEventHandler", notification);

                return Ok(ApiResponse<object>.SuccessResponse(project.ToProjectDto(), "Success.", 200));

            }
            catch (Exception ex)
            {
                return BadRequest(ApiResponse<object>.ErrorResponse(ex.Message, ex, 400));
            }
        }

        //[HttpPost("assign-employee")]
        //public async Task<IActionResult> AssignEmployee(int? allocationid, int employeeId, int projectId)
        //{
        //    var employee = await _context.Employees.FindAsync(employeeId);
        //    var project = _projectrepo.Get(c => c.Id == projectId);
        //    if (employee == null || project == null)
        //    {
        //        return NotFound();
        //    }

        //    // Logic to add the product to a new table (e.g., selected products)

        //    if (allocationid == null)
        //    {
        //        // Add allocation
        //        ProjectAllocation allocation = new ProjectAllocation()
        //        {
        //            EmployeeId = employeeId,
        //            ProjectId = project.Id,
        //            AllocationDate = DateTime.UtcNow,
        //            //EmployeeRole = employee.Rol
        //            TenantId = project.TenantId
        //        };

        //        _unitOfWork.ProjectAllocation.CreateAsync(allocation);
        //    }
        //    else
        //    {
        //        //remove allocation
        //        var allocation = await _context.ProjectAllocations.FindAsync(allocationid);
        //        if (allocation != null)
        //        {
        //            allocation.ReAllocationDate = DateTime.UtcNow;

        //            _unitOfWork.ProjectAllocation.UpdateAsync(allocation.Id, allocation);
        //        }
        //        else
        //        {
        //            return NotFound();
        //        }
        //    }

        //    return Ok();
        //}

        [HttpGet]
        [Route("employees/get/{projectid?}/{includeInactive?}")]
        public async Task<IActionResult> GetEmployeeByProjectID(Guid? projectid, bool includeInactive = false)
        {
            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }
            Guid TenantId = GetTenantId();

            if (projectid != null)
            {
                // Fetch assigned project
                List<Employee> result = new List<Employee>();

                if ((bool)includeInactive)
                {

                    result = await (from rpm in _context.Employees.Include(c => c.JobRole)
                                    join fp in _context.ProjectAllocations.Where(c => c.TenantId == TenantId && c.ProjectId == projectid)
                                    on rpm.Id equals fp.EmployeeId
                                    select rpm).ToListAsync();
                }
                else
                {
                    result = await (from rpm in _context.Employees.Include(c => c.JobRole)
                                    join fp in _context.ProjectAllocations.Where(c => c.TenantId == TenantId && c.ProjectId == projectid && c.IsActive == true)
                                    on rpm.Id equals fp.EmployeeId
                                    select rpm).ToListAsync();
                }

                List<EmployeeVM> resultVM = new List<EmployeeVM>();
                foreach (Employee employee in result)
                {
                    EmployeeVM vm = employee.ToEmployeeVMFromEmployee();
                    resultVM.Add(vm);
                }

                return Ok(ApiResponse<object>.SuccessResponse(resultVM, "Success.", 200));
            }
            else
            {
                return NotFound(ApiResponse<object>.ErrorResponse("Invalid Input Parameter", 404));
            }


        }

        [HttpGet]
        [Route("allocation/{projectId}")]
        public async Task<IActionResult> GetProjectAllocation(Guid? projectId)
        {
            if (!ModelState.IsValid)
            {
                var errors = ModelState.Values
                    .SelectMany(v => v.Errors)
                    .Select(e => e.ErrorMessage)
                    .ToList();
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid data", errors, 400));

            }
            Guid TenantId = GetTenantId();


            var employees = await _context.ProjectAllocations
                .Where(c => c.TenantId == TenantId && c.ProjectId == projectId && c.Employee != null)
                .Include(e => e.Employee)
                .Select(e => new
                {
                    ID = e.Id,
                    EmployeeId = e.EmployeeId,
                    ProjectId = e.ProjectId,
                    AllocationDate = e.AllocationDate,
                    ReAllocationDate = e.ReAllocationDate,
                    FirstName = e.Employee != null ? e.Employee.FirstName : string.Empty,
                    LastName = e.Employee != null ? e.Employee.LastName : string.Empty,
                    MiddleName = e.Employee != null ? e.Employee.MiddleName : string.Empty,
                    IsActive = e.IsActive,
                    JobRoleId = (e.JobRoleId != null ? e.JobRoleId : e.Employee != null ? e.Employee.JobRoleId : null)
                }).ToListAsync();

            return Ok(ApiResponse<object>.SuccessResponse(employees, "Success.", 200));
        }

        [HttpPost("allocation")]
        public async Task<IActionResult> ManageAllocation(List<ProjectAllocationDot> projectAllocationDot)
        {
            if (projectAllocationDot != null)
            {
                Guid TenentID = GetTenantId();
                var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();

                List<object>? result = new List<object>();
                List<Guid> employeeIds = new List<Guid>();
                List<Guid> projectIds = new List<Guid>();

                foreach (var item in projectAllocationDot)
                {
                    try
                    {
                        ProjectAllocation projectAllocation = item.ToProjectAllocationFromProjectAllocationDto(TenentID);
                        ProjectAllocation? projectAllocationFromDb = await _context.ProjectAllocations.Where(c => c.EmployeeId == projectAllocation.EmployeeId
                        && c.ProjectId == projectAllocation.ProjectId
                        && c.ReAllocationDate == null
                        && c.TenantId == TenentID).SingleOrDefaultAsync();

                        if (projectAllocationFromDb != null)
                        {
                            _context.ProjectAllocations.Attach(projectAllocationFromDb);

                            if (item.Status)
                            {
                                projectAllocationFromDb.JobRoleId = projectAllocation.JobRoleId; ;
                                projectAllocationFromDb.IsActive = true;
                                _context.Entry(projectAllocationFromDb).Property(e => e.JobRoleId).IsModified = true;
                                _context.Entry(projectAllocationFromDb).Property(e => e.IsActive).IsModified = true;
                            }
                            else
                            {
                                projectAllocationFromDb.ReAllocationDate = DateTime.Now;
                                projectAllocationFromDb.IsActive = false;
                                _context.Entry(projectAllocationFromDb).Property(e => e.ReAllocationDate).IsModified = true;
                                _context.Entry(projectAllocationFromDb).Property(e => e.IsActive).IsModified = true;

                                employeeIds.Add(projectAllocation.EmployeeId);
                                projectIds.Add(projectAllocation.ProjectId);
                            }
                            await _context.SaveChangesAsync();
                            var result1 = new
                            {
                                Id = projectAllocationFromDb.Id,
                                EmployeeId = projectAllocation.EmployeeId,
                                JobRoleId = projectAllocation.JobRoleId,
                                IsActive = projectAllocation.IsActive,
                                ProjectId = projectAllocation.ProjectId,
                                AllocationDate = projectAllocation.AllocationDate,
                                ReAllocationDate = projectAllocation.ReAllocationDate,
                                TenantId = projectAllocation.TenantId
                            };
                            result.Add(result1);
                        }
                        else
                        {
                            projectAllocation.AllocationDate = DateTime.Now;
                            projectAllocation.IsActive = true;
                            _context.ProjectAllocations.Add(projectAllocation);
                            await _context.SaveChangesAsync();

                            employeeIds.Add(projectAllocation.EmployeeId);
                            projectIds.Add(projectAllocation.ProjectId);
                        }


                    }
                    catch (Exception ex)
                    {
                        return Ok(ApiResponse<object>.ErrorResponse(ex.Message, ex, 400));
                    }
                }
                var notification = new { LoggedInUserId = LoggedInEmployee.Id, Keyword = "Assign_Project", ProjectIds = projectIds, EmployeeList = employeeIds };

                await _signalR.Clients.All.SendAsync("NotificationEventHandler", notification);
                return Ok(ApiResponse<object>.SuccessResponse(result, "Data saved successfully", 200));

            }
            return BadRequest(ApiResponse<object>.ErrorResponse("Invalid details.", "Work Item Details are not valid.", 400));

        }

        [HttpPost("task")]
        public async Task<IActionResult> CreateProjectTask(List<WorkItemDot> workItemDot)
        {
            Guid tenantId = GetTenantId();
            var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            List<WorkItemVM> workItems = new List<WorkItemVM> { };
            List<Guid> projectIds = new List<Guid>();
            string message = "";
            string responseMessage = "";
            if (workItemDot != null)
            {
                foreach (var item in workItemDot)
                {
                    WorkItem workItem = item.ToWorkItemFromWorkItemDto(tenantId);

                    var workArea = await _context.WorkAreas.Include(a => a.Floor).FirstOrDefaultAsync(a => a.Id == workItem.WorkAreaId) ?? new WorkArea();

                    Building building = await _context.Buildings.FirstOrDefaultAsync(b => b.Id == (workArea.Floor != null ? workArea.Floor.BuildingId : Guid.Empty)) ?? new Building();

                    if (item.Id != null)
                    {
                        //update
                        _context.WorkItems.Update(workItem);
                        await _context.SaveChangesAsync();
                        responseMessage = "Task Updated Successfully";
                        message = $"Task Updated in Building: {building.Name}, on Floor: {workArea.Floor?.FloorName}, in Area: {workArea.AreaName} by {LoggedInEmployee.FirstName} {LoggedInEmployee.LastName}";
                    }
                    else
                    {
                        //create
                        _context.WorkItems.Add(workItem);
                        await _context.SaveChangesAsync();
                        responseMessage = "Task Added Successfully";
                        message = $"Task Added in Building: {building.Name}, on Floor: {workArea.Floor?.FloorName}, in Area: {workArea.AreaName} by {LoggedInEmployee.FirstName} {LoggedInEmployee.LastName}";
                    }
                    var result = new WorkItemVM
                    {
                        WorkItemId = workItem.Id,
                        WorkItem = workItem
                    };
                    workItems.Add(result);
                    projectIds.Add(building.ProjectId);
                }
                var activity = await _context.ActivityMasters.ToListAsync();
                var category = await _context.WorkCategoryMasters.ToListAsync();

                var notification = new { LoggedInUserId = LoggedInEmployee.Id, Keyword = "Infra", ProjectIds = projectIds, Message = message };

                await _signalR.Clients.All.SendAsync("NotificationEventHandler", notification);
                return Ok(ApiResponse<object>.SuccessResponse(workItems, responseMessage, 200));
            }

            return BadRequest(ApiResponse<object>.ErrorResponse("Invalid details.", "Work Item Details are not valid.", 400));

        }

        [HttpDelete("task/{id}")]
        public async Task<IActionResult> DeleteProjectTask(Guid id)
        {
            Guid tenantId = _userHelper.GetTenantId();
            var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            List<Guid> projectIds = new List<Guid>();
            WorkItem? task = await _context.WorkItems.AsNoTracking().Include(t => t.WorkArea).FirstOrDefaultAsync(t => t.Id == id && t.TenantId == tenantId);
            if (task != null)
            {
                if (task.CompletedWork == 0)
                {
                    var assignedTask = await _context.TaskAllocations.Where(t => t.WorkItemId == id).ToListAsync();
                    if (assignedTask.Count == 0)
                    {
                        _context.WorkItems.Remove(task);
                        await _context.SaveChangesAsync();
                        _logger.LogInfo("Task with ID {WorkItemId} has been successfully deleted.", task.Id);

                        var floorId = task.WorkArea?.FloorId;
                        var floor = await _context.Floor.Include(f => f.Building).FirstOrDefaultAsync(f => f.Id == floorId);


                        projectIds.Add(floor?.Building?.ProjectId ?? Guid.Empty);

                        var notification = new { LoggedInUserId = LoggedInEmployee.Id, Keyword = "Infra", ProjectIds = projectIds, Message = $"Task Deleted in Building: {floor?.Building?.Name}, on Floor: {floor?.FloorName}, in Area: {task.WorkArea?.AreaName} by {LoggedInEmployee.FirstName} {LoggedInEmployee.LastName}" };
                        await _signalR.Clients.All.SendAsync("NotificationEventHandler", notification);
                    }
                    else
                    {
                        _logger.LogWarning("Task with ID {WorkItemId} is currently assigned and cannot be deleted.", task.Id);
                        return BadRequest(ApiResponse<object>.ErrorResponse("Task is currently assigned and cannot be deleted.", "Task is currently assigned and cannot be deleted.", 400));
                    }
                }
                else
                {
                    double percentage = (task.CompletedWork / task.PlannedWork) * 100;
                    percentage = Math.Round(percentage, 2);
                    _logger.LogWarning("Task with ID {WorkItemId} is {CompletionPercentage}% complete and cannot be deleted", task.Id, percentage);
                    return BadRequest(ApiResponse<object>.ErrorResponse(System.String.Format("Task is {0}% complete and cannot be deleted", percentage), System.String.Format("Task is {0}% complete and cannot be deleted", percentage), 400));

                }
            }
            else
            {
                _logger.LogError("Task with ID {WorkItemId} not found ID database", id);
            }
            return Ok(ApiResponse<object>.SuccessResponse(new { }, "Task deleted successfully", 200));
        }

        [HttpPost("manage-infra")]
        public async Task<IActionResult> ManageProjectInfra(List<InfraDot> infraDots)
        {
            Guid tenantId = GetTenantId();
            var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();

            var responseData = new InfraVM { };
            string responseMessage = "";
            string message = "";
            List<Guid> projectIds = new List<Guid>();
            if (infraDots != null)
            {
                foreach (var item in infraDots)
                {
                    if (item.Building != null)
                    {

                        Building building = item.Building.ToBuildingFromBuildingDto(tenantId);
                        building.TenantId = GetTenantId();

                        if (item.Building.Id == null)
                        {
                            //create
                            _context.Buildings.Add(building);
                            await _context.SaveChangesAsync();
                            responseData.building = building;
                            responseMessage = "Buliding Added Successfully";
                            message = "Building Added";
                        }
                        else
                        {
                            //update
                            _context.Buildings.Update(building);
                            await _context.SaveChangesAsync();
                            responseData.building = building;
                            responseMessage = "Buliding Updated Successfully";
                            message = "Building Updated";

                        }
                        projectIds.Add(building.ProjectId);
                    }
                    if (item.Floor != null)
                    {
                        Floor floor = item.Floor.ToFloorFromFloorDto(tenantId);
                        floor.TenantId = GetTenantId();

                        if (item.Floor.Id == null)
                        {
                            //create
                            _context.Floor.Add(floor);
                            await _context.SaveChangesAsync();
                            responseData.floor = floor;
                            responseMessage = "Floor Added Successfully";
                            message = "Floor Added";
                        }
                        else
                        {
                            //update
                            _context.Floor.Update(floor);
                            await _context.SaveChangesAsync();
                            responseData.floor = floor;
                            responseMessage = "Floor Updated Successfully";
                            message = "Floor Updated";
                        }
                        Building? building = await _context.Buildings.FirstOrDefaultAsync(b => b.Id == floor.BuildingId);
                        projectIds.Add(building?.ProjectId ?? Guid.Empty);
                        message = $"{message} in Building: {building?.Name}";
                    }
                    if (item.WorkArea != null)
                    {
                        WorkArea workArea = item.WorkArea.ToWorkAreaFromWorkAreaDto(tenantId);
                        workArea.TenantId = GetTenantId();

                        if (item.WorkArea.Id == null)
                        {
                            //create
                            _context.WorkAreas.Add(workArea);
                            await _context.SaveChangesAsync();
                            responseData.workArea = workArea;
                            responseMessage = "Work Area Added Successfully";
                            message = "Work Area Added";
                        }
                        else
                        {
                            //update
                            _context.WorkAreas.Update(workArea);
                            await _context.SaveChangesAsync();
                            responseData.workArea = workArea;
                            responseMessage = "Work Area Updated Successfully";
                            message = "Work Area Updated";
                        }
                        Floor? floor = await _context.Floor.Include(f => f.Building).FirstOrDefaultAsync(f => f.Id == workArea.FloorId);
                        projectIds.Add(floor?.Building?.ProjectId ?? Guid.Empty);
                        message = $"{message} in Building: {floor?.Building?.Name}, on Floor: {floor?.FloorName}";
                    }
                }
                message = $"{message} by {LoggedInEmployee.FirstName} {LoggedInEmployee.LastName}";
                var notification = new { LoggedInUserId = LoggedInEmployee.Id, Keyword = "Infra", ProjectIds = projectIds, Message = message };

                await _signalR.Clients.All.SendAsync("NotificationEventHandler", notification);
                return Ok(ApiResponse<object>.SuccessResponse(responseData, responseMessage, 200));
            }
            return BadRequest(ApiResponse<object>.ErrorResponse("Invalid details.", "Infra Details are not valid.", 400));

        }

        [HttpGet("assigned-projects/{employeeId}")]
        public async Task<IActionResult> GetProjectsByEmployee([FromRoute] Guid employeeId)
        {

            Guid tenantId = _userHelper.GetTenantId();
            if (employeeId == Guid.Empty)
            {
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid details.", "Employee id not valid.", 400));
            }

            List<Guid> projectList = await _context.ProjectAllocations
                .Where(c => c.TenantId == tenantId && c.EmployeeId == employeeId && c.IsActive)
                .Select(c => c.ProjectId).Distinct()
                .ToListAsync();

            if (!projectList.Any())
            {
                return NotFound(ApiResponse<object>.SuccessResponse(new List<object>(), "No projects found.", 200));
            }


            List<Project> projectlist = await _context.Projects
                 .Where(p => projectList.Contains(p.Id))
                 .ToListAsync();

            List<ProjectListVM> projects = new List<ProjectListVM>();


            foreach (var project in projectlist)
            {

                projects.Add(project.ToProjectListVMFromProject());
            }



            return Ok(ApiResponse<object>.SuccessResponse(projects, "Success.", 200));
        }

        [HttpPost("assign-projects/{employeeId}")]
        public async Task<ActionResult> AssigneProjectsToEmployee([FromBody] List<ProjectsAllocationDto> projectAllocationDtos, [FromRoute] Guid employeeId)
        {
            if (projectAllocationDtos != null && employeeId != Guid.Empty)
            {
                Guid TenentID = GetTenantId();
                var LoggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
                List<object>? result = new List<object>();
                List<Guid> projectIds = new List<Guid>();

                foreach (var projectAllocationDto in projectAllocationDtos)
                {
                    try
                    {
                        ProjectAllocation projectAllocation = projectAllocationDto.ToProjectAllocationFromProjectsAllocationDto(TenentID, employeeId);
                        ProjectAllocation? projectAllocationFromDb = await _context.ProjectAllocations.Where(c => c.EmployeeId == employeeId && c.ProjectId == projectAllocationDto.ProjectId && c.ReAllocationDate == null && c.TenantId == TenentID).SingleOrDefaultAsync();

                        if (projectAllocationFromDb != null)
                        {


                            _context.ProjectAllocations.Attach(projectAllocationFromDb);

                            if (projectAllocationDto.Status)
                            {
                                projectAllocationFromDb.JobRoleId = projectAllocation.JobRoleId; ;
                                projectAllocationFromDb.IsActive = true;
                                _context.Entry(projectAllocationFromDb).Property(e => e.JobRoleId).IsModified = true;
                                _context.Entry(projectAllocationFromDb).Property(e => e.IsActive).IsModified = true;
                            }
                            else
                            {
                                projectAllocationFromDb.ReAllocationDate = DateTime.UtcNow;
                                projectAllocationFromDb.IsActive = false;
                                _context.Entry(projectAllocationFromDb).Property(e => e.ReAllocationDate).IsModified = true;
                                _context.Entry(projectAllocationFromDb).Property(e => e.IsActive).IsModified = true;

                                projectIds.Add(projectAllocation.ProjectId);
                            }
                            await _context.SaveChangesAsync();
                            var result1 = new
                            {
                                Id = projectAllocationFromDb.Id,
                                EmployeeId = projectAllocation.EmployeeId,
                                JobRoleId = projectAllocation.JobRoleId,
                                IsActive = projectAllocation.IsActive,
                                ProjectId = projectAllocation.ProjectId,
                                AllocationDate = projectAllocation.AllocationDate,
                                ReAllocationDate = projectAllocation.ReAllocationDate,
                                TenantId = projectAllocation.TenantId
                            };
                            result.Add(result1);
                        }
                        else
                        {
                            projectAllocation.AllocationDate = DateTime.Now;
                            projectAllocation.IsActive = true;
                            _context.ProjectAllocations.Add(projectAllocation);
                            await _context.SaveChangesAsync();

                            projectIds.Add(projectAllocation.ProjectId);

                        }


                    }
                    catch (Exception ex)
                    {

                        return Ok(ApiResponse<object>.ErrorResponse(ex.Message, ex, 400));
                    }
                }
                var notification = new { LoggedInUserId = LoggedInEmployee.Id, Keyword = "Assign_Project", ProjectIds = projectIds, EmployeeId = employeeId };

                await _signalR.Clients.All.SendAsync("NotificationEventHandler", notification);

                return Ok(ApiResponse<object>.SuccessResponse(result, "Data saved successfully", 200));
            }
            else
            {
                return BadRequest(ApiResponse<object>.ErrorResponse("Invalid details.", "All Field is required", 400));
            }

        }


    }
}