using Marco.Pms.DataAccess.Data;
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;
using Marco.Pms.Model.ViewModels.Employee;
using MarcoBMS.Services.Helpers;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;

namespace MarcoBMS.Services.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    [Authorize]
    public class ProjectController : ControllerBase
    {
        //private readonly IUnitOfWork _unitOfWork;
        private readonly ApplicationDbContext _context;
        private ApplicationUser _applicationUser;
       // private readonly IProjectRepository _projectrepo;
        private readonly UserManager<IdentityUser> _userManager;
        private readonly UserHelper _userHelper;


        public ProjectController(UserManager<IdentityUser> userManager, ApplicationDbContext context, UserHelper userHelper)
        {
            //_unitOfWork = unitOfWork;
            _context = context;
           //_projectrepo = projectrepo;
            _userManager = userManager;
            _userHelper = userHelper;
        }
        [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));

            }
            var tenantId = _userHelper.GetTenantId();
            List<Project> projects = await _context.Projects.Where(c=>c.TenantId == _userHelper.GetTenantId()).ToListAsync();

            
            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<int> 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:int}")]
        public async Task<IActionResult> Get([FromRoute] int 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();

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

        [HttpGet("details/{id:int}")]
        public async Task<IActionResult> Details([FromRoute] int 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();
                projectVM.Id = vm.project.Id;
                projectVM.Name = vm.project.Name;
                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>();
                foreach (Building build in vm.buildings)
                {
                    BuildingVM buildVM = new BuildingVM() { Id = build.Id, Description = build.Description, Name = build.Name };
                    buildVM.Floors = new List<FloorsVM>();
                    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>();

                        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>() };

                            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 = null;
                                workItemVM.WorkItem.ActivityMaster.Tenant = null;
                                workItemVM.WorkItem.Tenant = null;



                                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(int? 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<int> 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.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();

            vm.project = project;
            vm.buildings = buildings;
            vm.floors = floors;
            vm.workAreas = workAreas;
            vm.workItems = workItems;

            return vm;
        }

        private int 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)
        {
            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));

            }

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

            _context.Projects.Add(project);

            await _context.SaveChangesAsync();

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

        [HttpPut]
        [Route("update/{id:int}")]
        public async Task<IActionResult> Update([FromRoute] int id, [FromBody] UpdateProjectDto updateProjectDto)
        {
            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
            {
                int TenantId = GetTenantId();
                updateProjectDto.TenantId = TenantId;

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

                await _context.SaveChangesAsync();

                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(int? 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));

            }
            int 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:int}")]
        public async Task<IActionResult> GetProjectAllocation(int? 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));

            }
            int TenantId = GetTenantId();


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

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

        [HttpPost("allocation")]
        public async Task<IActionResult> ManageAllocation(List<ProjectAllocationDot> projectAllocationDot)
        {
            if (projectAllocationDot != null)
            {
                int TenentID = GetTenantId();

                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;
                            }
                            await _context.SaveChangesAsync();

                        }
                        else
                        {
                            projectAllocation.AllocationDate = DateTime.Now;
                            projectAllocation.IsActive = true;
                            _context.ProjectAllocations.Add(projectAllocation);
                            await _context.SaveChangesAsync();
                        }

                    }
                    catch (Exception ex) {
                        return Ok(ApiResponse<object>.ErrorResponse(ex.Message,ex, 400));
                    }
                }
                return Ok(ApiResponse<object>.SuccessResponse(null, "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)
        {
            List<WorkItemVM> workItems = new List<WorkItemVM> { };
            if (workItemDot != null)
            {
                foreach (var item in workItemDot)
                {
                    item.TenantId = GetTenantId();
                    WorkItem workItem = item.ToWorkItemFromWorkItemDto();

                    if (item.Id > 0)
                    {
                        //update
                        _context.WorkItems.Update(workItem);
                       await _context.SaveChangesAsync();
                    }
                    else
                    {
                        //create
                        _context.WorkItems.Add(workItem);
                        await _context.SaveChangesAsync();
                    }
                    var result = new WorkItemVM
                    {
                        WorkItemId = workItem.Id,
                        WorkItem = workItem
                    };
                    workItems.Add(result);
                }
                var activity = await _context.ActivityMasters.ToListAsync();
                return Ok(ApiResponse<object>.SuccessResponse(workItems, "Data saved successfully.", 200));
            }

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

        }
        [HttpPost("manage-infra")]
        public async Task<IActionResult> ManageProjectInfra(List<InfraDot> infraDots)
        {
            var responseData = new InfraVM{ };
            if (infraDots != null)
            {
                foreach (var item in infraDots)
                {
                    if (item.Building != null)
                    {

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

                        if (item.Building.Id == 0)
                        {
                            //create
                            _context.Buildings.Add(building);
                            await _context.SaveChangesAsync();
                            responseData.building = building;
                        }
                        else
                        {
                            //update
                            _context.Buildings.Update(building);
                            await _context.SaveChangesAsync();
                            responseData.building = building;

                        }
                    }
                    if (item.Floor != null)
                    {
                        Floor floor = item.Floor.ToFloorFromFloorDto();
                        floor.TenantId = GetTenantId();

                        if (item.Floor.Id == 0)
                        {
                            //create
                            _context.Floor.Add(floor);
                            await _context.SaveChangesAsync();
                            responseData.floor = floor;
                        }
                        else
                        {
                            //update
                            _context.Floor.Update(floor);
                            await _context.SaveChangesAsync();
                            responseData.floor = floor;
                        }
                    }
                    if (item.WorkArea != null)
                    {
                        WorkArea workArea = item.WorkArea.ToWorkAreaFromWorkAreaDto();
                        workArea.TenantId = GetTenantId();

                        if (item.WorkArea.Id == 0)
                        {
                            //create
                            _context.WorkAreas.Add(workArea);
                            await _context.SaveChangesAsync();
                            responseData.workArea = workArea;
                        }
                        else
                        {
                            //update
                            _context.WorkAreas.Update(workArea);
                            await _context.SaveChangesAsync();
                            responseData.workArea = workArea;
                        }
                    }
                }
                return Ok(ApiResponse<object>.SuccessResponse(responseData, "Data saved successfully.", 200));
            }
            return BadRequest(ApiResponse<object>.ErrorResponse("Invalid details.", "Infra Details are not valid.", 400));

        }

    }
}