using Api.SeaHavenIndustries.DTOs;
using Data.SeaHavenIndustries;
using Data.SeaHavenIndustries.Enums;
using FluentValidation;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Components.Forms;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.Data.SqlClient;
using Microsoft.EntityFrameworkCore;
using Microsoft.VisualBasic;
using SendGrid.Helpers.Mail;
using System.IO;
using System.Net.Http.Headers;
using System.Security.Claims;
using static System.Runtime.InteropServices.JavaScript.JSType;
using SeaHaven.Services.Interfaces;
using SeaHaven.Services.DTOs;
using SeaHaven.Services.Helpers;
using SeaHaven.DataServices.Interfaces;

namespace Api.SeaHavenIndustries.Controllers
{
    [Authorize]
    [ApiController]
    [Route("api/WorkOrder")]
    [Route("api/workorders")]
    public class WorkOrderController : Controller
    {
        private readonly UserManager<ApplicationUser> _userManager;
        private readonly IWorkOrderService _workOrderService;
        private readonly IWorkOrderDataService _workOrderDataService;
        private readonly ICommentDataService _commentDataService;
        private readonly IQuotesDataService _quotesDataService;
        private readonly IUserDataService _userDataService;
        private readonly IDispatchDataService _dispatchDataService;
        private readonly IVendorDataService _vendorDataService;
        private readonly ITaskListTemplateDataService _taskListTemplateDataService;
        private readonly ApplicationDbContext _db;
        private readonly IWebHostEnvironment _webHostEnvironment;
        IHttpContextAccessor _httpContext;
        private readonly Helper.SendMessage _sendMessage;
        private readonly Helper.VendorPortalTokenService _vendorTokens;
        private readonly IConfiguration _config;
        private readonly IWorkOrderBoardService _workOrderBoardService;

        public WorkOrderController(
            UserManager<ApplicationUser> userManager,
            IWorkOrderService workOrderService,
            IWorkOrderDataService workOrderDataService,
            ICommentDataService commentDataService,
            IQuotesDataService quotesDataService,
            IUserDataService userDataService,
            IDispatchDataService dispatchDataService,
            IVendorDataService vendorDataService,
            ITaskListTemplateDataService taskListTemplateDataService,
            ApplicationDbContext db,
            IWebHostEnvironment webHostEnvironment,
            IHttpContextAccessor httpContext,
            Helper.SendMessage sendMessage,
            Helper.VendorPortalTokenService vendorTokens,
            IConfiguration config,
            IWorkOrderBoardService workOrderBoardService)
        {
            _userManager = userManager;
            _workOrderService = workOrderService;
            _workOrderDataService = workOrderDataService;
            _commentDataService = commentDataService;
            _quotesDataService = quotesDataService;
            _userDataService = userDataService;
            _dispatchDataService = dispatchDataService;
            _vendorDataService = vendorDataService;
            _taskListTemplateDataService = taskListTemplateDataService;
            _db = db;
            _webHostEnvironment = webHostEnvironment;
            _httpContext = httpContext;
            _sendMessage = sendMessage;
            _vendorTokens = vendorTokens;
            _config = config;
            _workOrderBoardService = workOrderBoardService;
        }

        [HttpGet("board")]
        public async Task<IActionResult> GetBoard(
            [FromQuery, BindRequired] DateOnly weekStart,
            [FromQuery] DateOnly? weekEnd = null,
            [FromQuery] List<string>? dispatchers = null,
            [FromQuery] bool myWorkOrders = false,
            [FromQuery] List<WorkOrderType>? types = null,
            [FromQuery] string? search = null)
        {
            var resolvedWeekEnd = weekEnd ?? weekStart.AddDays(4);
            var weekValidationError = WorkOrderOperationalWeek.ValidateWeekWindow(weekStart, resolvedWeekEnd);
            if (weekValidationError != null)
                return BadRequest(weekValidationError);

            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var query = new WorkOrderBoardQueryDto
            {
                WeekStart = weekStart,
                WeekEnd = weekEnd,
                Dispatchers = dispatchers,
                MyWorkOrders = myWorkOrders,
                Types = types,
                Search = search
            };

            var result = await _workOrderBoardService.GetBoardAsync(query, userId);
            return Ok(result);
        }

        [HttpGet("lookups/dispatchers")]
        public async Task<IActionResult> GetDispatcherLookups()
        {
            var result = await _workOrderBoardService.GetDispatcherLookupsAsync();
            return Ok(result);
        }

        [HttpPost]
        [Route("AddWorkorder")]
        public async Task<IActionResult> Addworkorder([FromForm] Workorder_DTO model)
        {
            try
            {
                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);

                var createDto = new CreateWorkOrderDTO
                {
                    WorkerOrderTitle = model.WorkerOrderTitle ?? "",
                    Description = model.Description,
                    Status = WorkOrderStatus.Open,
                    Priority = model.Priority ?? WorkOrderPriority.Medium,
                    LocationId = model.LocationId,
                    AssignTo = model.AssignTo,
                    DueDate = model.DueDate
                };

                var workOrderId = await _workOrderService.CreateWorkOrderAsync(createDto, userId!);

                if (model.ContactIds != null && model.ContactIds.Any())
                {
                    await _workOrderDataService.AddWorkOrderContactsAsync(workOrderId, model.ContactIds);
                }

                if (model.CategoryIds != null && model.CategoryIds.Any())
                {
                    await _workOrderDataService.AddWorkOrderCategoriesAsync(workOrderId, model.CategoryIds);
                }

                if (model.Attachments != null)
                {
                    foreach (var attachment in model.Attachments)
                    {
                        var fileUrl = await SaveFileAsync(attachment);
                        await _workOrderDataService.AddWorkOrderAttachmentAsync(new WorkOrderAttachments
                        {
                            WorkorderId = workOrderId,
                            Attachments = fileUrl
                        });
                    }
                }

                if (model.BeforPhotoAttachment != null)
                {
                    var fileUrl = await SaveFileAsync(model.BeforPhotoAttachment);
                    var workOrder = await _workOrderDataService.GetByIdAsync(workOrderId);
                    if (workOrder != null)
                    {
                        workOrder.BeforPhotoAttachment = fileUrl;
                        await _workOrderDataService.UpdateAsync(workOrder);
                    }
                }

                if (model.AfterPhotoAttachment != null)
                {
                    var fileUrl = await SaveFileAsync(model.AfterPhotoAttachment);
                    var workOrder = await _workOrderDataService.GetByIdAsync(workOrderId);
                    if (workOrder != null)
                    {
                        workOrder.AfterPhotoAttachment = fileUrl;
                        await _workOrderDataService.UpdateAsync(workOrder);
                    }
                }

                if (model.SignOffAttachment != null)
                {
                    var fileUrl = await SaveFileAsync(model.SignOffAttachment);
                    var workOrder = await _workOrderDataService.GetByIdAsync(workOrderId);
                    if (workOrder != null)
                    {
                        workOrder.SignOffAttachment = fileUrl;
                        await _workOrderDataService.UpdateAsync(workOrder);
                    }
                }

                return Ok(new DataResponse { Message = "Work order created successfully", Status = "200", Data = workOrderId });
            }
            catch (ValidationException vex)
            {
                var errors = string.Join(", ", vex.Errors.Select(e => e.ErrorMessage));
                return BadRequest(new Response { Status = "Validation Error", Message = errors });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }


        [HttpPost]
        [HttpPut("{id:int}")]
        [Route("EditWorkorder")]
        public async Task<IActionResult> Editworkorder([FromForm] EditWorkorder_DTO model)
        {
            try
            {
                if (!model.Id.HasValue)
                    return BadRequest(new Response { Status = "Error", Message = "Work order ID is required" });

                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);

                var updateDto = new UpdateWorkOrderDTO
                {
                    WorkerOrderTitle = model.WorkerOrderTitle,
                    Description = model.Description,
                    Status = model.Status,
                    Priority = model.Priority,
                    LocationId = model.LocationId,
                    AssignTo = model.AssignTo,
                    DueDate = model.DueDate,
                    CompletedDate = model.CompletedDate
                };

                var success = await _workOrderService.UpdateWorkOrderAsync(model.Id.Value, updateDto, userId!);
                if (!success)
                    return BadRequest(new Response { Status = "Error", Message = "Work order not found" });

                await _workOrderDataService.DeleteWorkOrderContactsAsync(model.Id.Value);
                await _workOrderDataService.DeleteWorkOrderCategoriesAsync(model.Id.Value);

                if (model.ContactIds != null && model.ContactIds.Any())
                {
                    await _workOrderDataService.AddWorkOrderContactsAsync(model.Id.Value, model.ContactIds);
                }

                if (model.CategoryIds != null && model.CategoryIds.Any())
                {
                    await _workOrderDataService.AddWorkOrderCategoriesAsync(model.Id.Value, model.CategoryIds);
                }

                if (model.Attachments != null)
                {
                    foreach (var attachment in model.Attachments)
                    {
                        var fileUrl = await SaveFileAsync(attachment);
                        await _workOrderDataService.AddWorkOrderAttachmentAsync(new WorkOrderAttachments
                        {
                            WorkorderId = model.Id.Value,
                            Attachments = fileUrl
                        });
                    }
                }

                if (model.BeforPhotoAttachment != null)
                {
                    var fileUrl = await SaveFileAsync(model.BeforPhotoAttachment);
                    var workOrder = await _workOrderDataService.GetByIdAsync(model.Id.Value);
                    if (workOrder != null)
                    {
                        workOrder.BeforPhotoAttachment = fileUrl;
                        await _workOrderDataService.UpdateAsync(workOrder);
                    }
                }

                if (model.AfterPhotoAttachment != null)
                {
                    var fileUrl = await SaveFileAsync(model.AfterPhotoAttachment);
                    var workOrder = await _workOrderDataService.GetByIdAsync(model.Id.Value);
                    if (workOrder != null)
                    {
                        workOrder.AfterPhotoAttachment = fileUrl;
                        await _workOrderDataService.UpdateAsync(workOrder);
                    }
                }

                if (model.SignOffAttachment != null)
                {
                    var fileUrl = await SaveFileAsync(model.SignOffAttachment);
                    var workOrder = await _workOrderDataService.GetByIdAsync(model.Id.Value);
                    if (workOrder != null)
                    {
                        workOrder.SignOffAttachment = fileUrl;
                        await _workOrderDataService.UpdateAsync(workOrder);
                    }
                }

                return Ok(new DataResponse { Message = "Updated Successfully", Status = "200" });
            }
            catch (ValidationException vex)
            {
                var errors = string.Join(", ", vex.Errors.Select(e => e.ErrorMessage));
                return BadRequest(new Response { Status = "Validation Error", Message = errors });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }
        // -----------------------------------
        // GET: api/WorkOrder/GetWorkOrderList
        // -----------------------------------
        [HttpGet("GetWorkOrderList")]
        public async Task<IActionResult> GetWorkOrderList(string? search = "", int page = 1, int pageSize = 12, string? sortBy = "lastUpdated", string? sortDir = "desc", string? status = "", string? assignee = "", int? locationId = null)
        {
            var (data, totalCount) = await _workOrderDataService.GetWorkOrderListPagedAsync(
                page,
                pageSize,
                search,
                status,
                assignee,
                locationId,
                sortBy,
                sortDir);

            var viewModel = new Pagination_DTO
            {
                Data = data,
                PageNumber = page,
                PageSize = pageSize,
                TotalCount = totalCount,
                TotalPages = (int)Math.Ceiling(totalCount / (double)pageSize)
            };

            return Ok(viewModel);
        }


        [HttpDelete]
        [Route("DeleteWorkorder")]
        public async Task<IActionResult> Deleteworkorder([FromBody] EditWorkorder_DTO model)
        {
            int id = model.Id.HasValue ? model.Id.Value : 0;
            if (id == 0)
            {
                return BadRequest("Id is required");
            }
            try
            {
                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
                var success = await _workOrderService.DeleteWorkOrderAsync(id, userId!);

                if (!success)
                    return BadRequest("Work order not found!");

                await _quotesDataService.UnlinkFromWorkOrderAsync(id);

                var comments = await _commentDataService.GetByWorkOrderIdAsync(id);
                foreach (var comment in comments)
                {
                    await _commentDataService.DeleteAsync(comment.Id);
                }

                return Ok(new DataResponse { Message = "Removed Successfully", Status = "200" });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpGet]
        [Route("GetFilteredWorkorder")]
        public IActionResult GetFilteredWorkorder(
         [FromQuery] string[] assignto,
         [FromQuery] int[]? location,
         [FromQuery] string[]? priority,
         [FromQuery] string[]? status,
         [FromQuery] string[]? duedate,
         [FromQuery] string search = "",
         [FromQuery] string sort = "Sort Order",
         [FromQuery] string sortby = "Sort By",
         int page = 1,
         int pageSize = 10)
        {
            try
            {
                IQueryable<WorkOrder> query = _db.workOrders.Where(w => w.istemplate != true).Include(w => w.Locations);

                if (!string.IsNullOrEmpty(search))
                {
                    var s = search.ToLower();
                    query = query.Where(w =>
                        (w.WorkerOrderTitle ?? "").ToLower().Contains(s) ||
                        (w.WorkerOrderNumber ?? "").ToLower().Contains(s) ||
                        (w.Locations != null && (w.Locations.Title ?? "").ToLower().Contains(s)));
                }

                if (assignto != null && assignto.Length > 0)
                {
                    if (assignto[0] != "" && assignto[0] != null)
                        query = query.Where(w => assignto.Contains(w.AssignTo));
                }

                if (location != null && location.Length > 0)
                {
                    if (location[0] != 0)
                        query = query.Where(w => location.Contains(w.LocationId ?? 0));
                }

                if (priority != null && priority.Length > 0)
                {
                    if (priority[0] != "" && priority[0] != null)
                        query = query.Where(w => priority.Contains(w.Priority));
                }

                if (status != null && status.Length > 0)
                {
                    if (status[0] != "" && status[0] != null)
                        query = query.Where(w => status.Contains(w.Status));
                }
                var data = query.ToList();

                // Perform client-side filtering for due dates
                data = data.Where(w =>
                    duedate == null || duedate.Length == 0 || duedate[0] == null ||
                    duedate.Any(dd => w.DueDate.HasValue && CheckDueDate(dd, w.DueDate.Value.Date, DateTime.UtcNow.Date))).ToList();

                // Apply sorting
                if (!string.IsNullOrEmpty(sort) && !string.IsNullOrEmpty(sortby) && sortby != "")
                {
                    switch (sortby)
                    {
                        case "Name":
                            data = (sort.ToLower() == "ascending") ? data.OrderBy(w => w.WorkerOrderTitle).ToList() : data.OrderByDescending(w => w.WorkerOrderTitle).ToList();
                            break;
                        case "Due Date":
                            data = (sort.ToLower() == "ascending") ? data.OrderBy(w => w.DueDate).ToList() : data.OrderByDescending(w => w.DueDate).ToList();
                            break;
                        case "Severity":
                            data = (sort.ToLower() == "ascending") ? data.OrderBy(w => w.Priority).ToList() : data.OrderByDescending(w => w.Priority).ToList();
                            break;
                        default:
                            // Handle default case or throw an exception
                            break;
                    }
                }

                var totalCount = data.Count();
                var pagedData = data
                    .Skip((page - 1) * pageSize)
                    .Take(pageSize)
                    .Select(s => new { s.Id, s.WorkerOrderTitle, s.DueDate, s.Status, s.Priority, Name = s.Locations != null ? s.Locations.Name : "" })
                    .OrderByDescending(d => d.Name)
                    .ToList();

                var totalPages1 = (int)Math.Ceiling(totalCount / (double)pageSize);

                // Create a view model containing the paged items and pagination metadata
                var viewModel = new Pagination_DTO
                {
                    Data = pagedData,
                    PageNumber = page,
                    PageSize = pageSize,
                    TotalCount = totalCount,
                    TotalPages = totalPages1
                };

                return Ok(viewModel);
            }
            catch (Exception ex)
            {
                // Handle exception and return a default result or an error response
                return StatusCode(500, "Internal Server Error");
            }
        }

        [HttpGet("{id:int}")]
        [HttpGet("GetWorkorderById")]
        public async Task<IActionResult> GetWorkorderById(int id)
        {
            var exist = await _db.workOrders.Include(w => w.Locations).Include(w => w.Comments).Include(w => w.Quotes).Include(w => w.Dispatches).ThenInclude(d => d.Vendor).Where(w => w.Id == id).Select(s => new
            {
                s.Id,
                s.InternalWONumber,
                s.WorkerOrderNumber,
                title = s.WorkerOrderTitle,
                s.Description,
                s.CreatedDate,
                s.DueDate,
                s.ScheduledDate,
                s.CompletedDate,
                s.Status,
                assignee = s.AssignToUser != null ? s.AssignToUser.FirstName : "",
                location = s.Locations != null ? s.Locations.Name : "",
                locationId = s.LocationId,
                locationZip = s.Locations != null ? (s.Locations.Zip ?? ExtractZip(s.Locations.Address1)) : "",
                priority = s.Priority,
                s.Problem,
                s.Trade,
                s.SubTrade,
                s.VendorNTE,
                s.Source,
                s.PO,
                s.TT,
                poc = s.WorkOrderContacts.Select(c => new { c.Id, name = c.POC != null ? (c.POC.FirstName + " " + c.POC.LastName).Trim() : "", email = c.POC != null ? c.POC.Email : "", phone = c.POC != null ? c.POC.PhoneNumber : "" }),
                category = s.WorkOrderCategories.Select(c => new { c.Id, name = c.Category != null ? c.Category.Name : "" }),
                Attachments = s.workOrderAttachments.Select(a => new { a.Id, attachment = a.Attachments }),
                s.BeforPhotoIssue,
                s.BeforPhotoAttachment,
                s.AfterPhotoIssue,
                s.AfterPhotoAttachment,
                s.SignOffName,
                s.SignOffAttachment,
                s.SignOffSignature,
                Comments = s.Comments.Select(c => new { c.Id, c.CreatedDate, c.Commenttext, c.Commenter, c.RecordType, c.CommentType, c.Documents, userName = c.ApplicationUser != null ? c.ApplicationUser.FirstName : "" }),
                quotes = s.Quotes.Select(q => new { code = q.QuotId, q.Id }),
                auditLog = _db.WorkOrderAuditLogs
                    .Where(a => a.WorkOrderId == s.Id)
                    .OrderByDescending(a => a.CreatedAt)
                    .Select(a => new {
                        a.Id,
                        a.FieldName,
                        a.OldValue,
                        a.NewValue,
                        a.Action,
                        a.CreatedAt,
                        userName = a.User != null ? a.User.FirstName + " " + a.User.LastName : ""
                    }).ToList(),
                dispatches = s.Dispatches.Select(d => new {
                    d.Id,
                    d.DispatchNumber,
                    d.PONumber,
                    d.NTEAmount,
                    d.Description,
                    d.Status,
                    d.ScheduledDate,
                    d.CompletedDate,
                    d.DispatchedAt,
                    d.EmailSent,
                    vendorName = d.Vendor != null ? d.Vendor.CompanyName : "",
                    vendorEmail = d.Vendor != null ? d.Vendor.Email : "",
                    vendorId = d.VendorId
                }).ToList()
            }).FirstOrDefaultAsync();
            if (exist == null)
            {

                return BadRequest(new Response { Status = "Error", Message = "ID not found!" });
            }
            else
            {
                return Ok(exist);
            }
        }
        [HttpGet]
        [Route("GetFilteredWorkorder2")]
        public IActionResult GetFilteredWorkorder2([FromQuery] string[] assignto, [FromQuery] int[]? location, [FromQuery] string[]? priority, [FromQuery] string[]? status, [FromQuery] string[]? duedate, [FromQuery] string search = "", [FromQuery] string sort = "Sort Order", [FromQuery] string sortby = "Sort By", int page = 1, int pageSize = 10)
        {
            try
            {
                var totalCount = _db.workOrders.Where(w => w.istemplate != true).Count();
                if (sort == "Sort Order" && sortby == "Sort By" && assignto.Count() == 0 && (duedate == null || duedate.Count() == 0) && location.Count() == 0 && (priority == null || priority.Count() == 0) && (status == null || status.Count() == 0) && search == "")
                {
                    var data1 = _db.workOrders.Where(w => w.istemplate != true).Include(w => w.Locations).ToListAsync();
                    return Ok(data1);
                }
                //if (sort == "Sort Order" && sortby == "Sort By" && assignto.Count() == 0 && (duedate == null || duedate.Count() == 0) && location.Count() == 0 && (priority == null || priority.Count() == 0) && (status == null || status.Count() == 0) && search == "")
                //{
                //    var data1 = _db.workOrders.Where(w => w.istemplate != true).Include(w => w.Locations).Select(s => new {s.Id, s.WorkerOrderTitle, s.DueDate, s.Status, s.Priority, s.Locations.Name }).OrderByDescending(d => d.Name).ToList().Skip((page - 1) * pageSize)
                //    .Take(pageSize);

                //    // Calculate the number of pages
                //    var totalPages = (int)Math.Ceiling(totalCount / (double)pageSize);

                //    // Create a view model containing the paged items and pagination metadata
                //    var viewModel1 = new Pagination_DTO
                //    {
                //        Data = data1,
                //        PageNumber = page,
                //        PageSize = pageSize,
                //        TotalCount = totalCount,
                //        TotalPages = totalPages
                //    };
                //    return Ok(viewModel1);
                //}

                var currentDate = DateTime.UtcNow.Date;
                var data = _db.workOrders.Include(w => w.Locations)
                     .Where(w => w.istemplate != true && (((w.WorkerOrderTitle ?? "").ToLower().Contains(search.ToLower()) || (w.WorkerOrderNumber ?? "").ToLower().Contains(search.ToLower()) || (w.Locations != null && (w.Locations.Title ?? "").ToLower().Contains(search.ToLower()))) &&
                         (assignto.Count() == 0 || assignto.Contains(w.AssignTo)) &&
                         (location.Count() == 0 || (w.LocationId.HasValue && location.Contains(w.LocationId.Value))) &&
                         (priority.Count() == 0 || priority.Contains(w.Priority)) &&
                         ((status.Count() == 0 || status.Contains(w.Status))
                         )))
                     .ToList();

                // Perform client-side filtering for due dates
                data = data.Where(w =>
                        duedate.Count() == 0 ||
                        duedate.Any(dd => w.DueDate.HasValue && CheckDueDate(dd, w.DueDate.Value.Date, currentDate))).ToList();

                // Apply sorting
                if (!string.IsNullOrEmpty(sort) && !string.IsNullOrEmpty(sortby) && sortby != "")
                {
                    switch (sortby)
                    {
                        case "Name":
                            data = (sort.ToLower() == "ascending") ? data.OrderBy(w => w.WorkerOrderTitle).ToList() : data.OrderByDescending(w => w.WorkerOrderTitle).ToList();
                            break;
                        case "Due Date":
                            data = (sort.ToLower() == "ascending") ? data.OrderBy(w => w.DueDate).ToList() : data.OrderByDescending(w => w.DueDate).ToList();
                            break;
                        case "Severity":
                            data = (sort.ToLower() == "ascending") ? data.OrderBy(w => w.Priority).ToList() : data.OrderByDescending(w => w.Priority).ToList();
                            break;
                        default:
                            // Handle default case or throw an exception
                            break;
                    }
                }
                var newdata = data.Select(s => new { s.Id, s.WorkerOrderTitle, s.DueDate, s.Status, s.Priority, Name = s.Locations != null ? s.Locations.Name : "" }).OrderByDescending(d => d.Name).ToList().Skip((page - 1) * pageSize)
                    .Take(pageSize);
                var totalPages1 = (int)Math.Ceiling(totalCount / (double)pageSize);

                // Create a view model containing the paged items and pagination metadata
                var viewModel = new Pagination_DTO
                {
                    Data = newdata,
                    PageNumber = page,
                    PageSize = pageSize,
                    TotalCount = totalCount,
                    TotalPages = totalPages1
                };
                return Ok(viewModel);
            }
            catch (Exception ex)
            {
                var totalCount = _db.workOrders.Where(w => w.istemplate != true).Count();
                var data1 = _db.workOrders.Where(w => w.istemplate != true).Include(w => w.Locations).Select(s => new
                {
                    s.Id,
                    s.WorkerOrderTitle,
                    s.DueDate,
                    s.Status,
                    s.Priority,
                    Name = s.Locations != null ? s.Locations.Name : ""
                }).OrderByDescending(d => d.Id).ToList().Skip((page - 1) * pageSize)
                    .Take(pageSize);

                // Calculate the number of pages
                var totalPages = (int)Math.Ceiling(totalCount / (double)pageSize);

                // Create a view model containing the paged items and pagination metadata
                var viewModel = new Pagination_DTO
                {
                    Data = data1,
                    PageNumber = page,
                    PageSize = pageSize,
                    TotalCount = totalCount,
                    TotalPages = totalPages
                };
                return Ok(viewModel);
            }
        }
        bool CheckDueDate(string dd, DateTime dueDate, DateTime currentDate)
        {
            return dd switch
            {
                "Today" => dueDate == currentDate,
                "Tomorrow" => dueDate == currentDate.AddDays(1),
                "Next Week" => dueDate >= currentDate.AddDays(1) && dueDate <= currentDate.AddDays(7),
                "Next Month" => dueDate >= currentDate.AddDays(1) && dueDate <= currentDate.AddMonths(1),
                "Over Due" => dueDate < currentDate,
                _ => false
            };
        }

        [HttpPost]
        [Route("ChangeStatus")]
        public async Task<IActionResult> ChangeStatus(int id, string status)
        {
            try
            {
                var workOrder = await _workOrderDataService.GetByIdAsync(id);
                if (workOrder == null)
                    return BadRequest(new Response { Status = "Error", Message = "Work order not found" });

                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);

                if (workOrder.Status != status)
                {
                    await _workOrderDataService.AddAuditLogAsync(new WorkOrderAuditLog
                    {
                        WorkOrderId = id,
                        UserId = userId,
                        FieldName = "Status",
                        OldValue = workOrder.Status ?? "",
                        NewValue = status,
                        Action = AuditAction.StatusChange.ToString(),
                        CreatedAt = DateTime.UtcNow
                    });
                }

                workOrder.Status = status;
                await _workOrderDataService.UpdateAsync(workOrder);

                return Ok(new DataResponse { Message = "Updated Successfully", Status = "200", Data = WorkOrderDTO.MapToModel(workOrder) });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpPost]
        [Route("ChangeAssignment")]
        public async Task<IActionResult> ChangeAssignment(int id, string? assignTo)
        {
            try
            {
                var workOrder = await _workOrderDataService.GetByIdAsync(id);
                if (workOrder == null)
                    return BadRequest(new Response { Status = "Error", Message = "Work order not found" });

                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);

                if (workOrder.AssignTo != assignTo)
                {
                    var oldUser = workOrder.AssignTo != null ? await _userDataService.GetByIdAsync(workOrder.AssignTo) : null;
                    var newUser = assignTo != null ? await _userDataService.GetByIdAsync(assignTo) : null;

                    await _workOrderDataService.AddAuditLogAsync(new WorkOrderAuditLog
                    {
                        WorkOrderId = id,
                        UserId = userId,
                        FieldName = "AssignedTo",
                        OldValue = oldUser != null ? (oldUser.FirstName + " " + oldUser.LastName).Trim() : "",
                        NewValue = newUser != null ? (newUser.FirstName + " " + newUser.LastName).Trim() : "Unassigned",
                        Action = AuditAction.AssignmentChange.ToString(),
                        CreatedAt = DateTime.UtcNow
                    });
                }

                workOrder.AssignTo = assignTo;
                await _workOrderDataService.UpdateAsync(workOrder);

                var assignedUser = assignTo != null ? await _userDataService.GetByIdAsync(assignTo) : null;
                var assignedName = assignedUser != null ? (assignedUser.FirstName + " " + assignedUser.LastName).Trim() : "";
                return Ok(new { message = "Updated Successfully", assignedTo = assignedName });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpPost]
        [Route("AddComment")]
        public async Task<IActionResult> AddComment([FromForm] Comments_DTO model)
        {
            try
            {
                var userId = _httpContext?.HttpContext?.User?.FindFirst(ClaimTypes.NameIdentifier)?.Value ?? "";

                var comment = new Comments
                {
                    UserId = userId,
                    WorkerOrderId = model.WorkorderId,
                    Commenttext = model.Text,
                    CommentType = model.CommentType ?? "vendor"
                };

                if (model.Document != null)
                {
                    var fileUrl = await SaveFileAsync(model.Document);
                    comment.Documents = fileUrl;
                }

                var saved = await _commentDataService.AddAsync(comment);
                return Ok(new DataResponse { Message = "Updated Successfully", Status = "200", Data = saved });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpPost]
        [Route("AddCommentJson")]
        public async Task<IActionResult> AddCommentJson([FromBody] Comments_DTO model)
        {
            try
            {
                var userId = _httpContext?.HttpContext?.User?.FindFirst(ClaimTypes.NameIdentifier)?.Value ?? "";
                var comment = new Comments
                {
                    UserId = userId,
                    WorkerOrderId = model.WorkorderId,
                    Commenttext = model.Text,
                    CommentType = model.CommentType ?? "internal",
                };

                var saved = await _commentDataService.AddAsync(comment);
                var user = await _userDataService.GetByIdAsync(userId);

                return Ok(new
                {
                    saved.Id,
                    saved.CreatedDate,
                    saved.Commenttext,
                    saved.CommentType,
                    userName = user != null ? (user.FirstName + " " + user.LastName).Trim() : ""
                });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpGet]
        [Route("GetComments")]
        public async Task<IActionResult> GetComments()
        {
            var comments = await _commentDataService.GetAllAsync();
            var data = comments.Select(s => new
            {
                s.Id,
                s.Commenttext,
                FirstName = s.ApplicationUser != null ? s.ApplicationUser.FirstName : "",
                s.Documents
            }).ToList();
            return Ok(data);
        }

        [HttpGet]
        [Route("GetCommentsByWorkorderId")]
        public async Task<IActionResult> GetCommentsByWorkorderId(int woid)
        {
            var comments = await _commentDataService.GetByWorkOrderIdAsync(woid);
            var data = comments.Select(s => new
            {
                s.Id,
                s.Commenttext,
                FirstName = s.ApplicationUser != null ? s.ApplicationUser.FirstName : "",
                s.Documents
            }).ToList();
            return Ok(data);
        }
        [HttpGet]
        [Route("GetworkordersDD")]
        public async Task<IActionResult> GetworkordersDD()
        {
            var data = await _workOrderDataService.GetAllAsync();
            return Ok(data.Where(w => w.istemplate != true));
        }
        [HttpGet]
        [Route("Getworkorders")]
        public async Task<IActionResult> Getworkorders()
        {
            var workOrders = await _workOrderDataService.GetAllWithDetailsAsync();
            var data = workOrders.Select(s => new WorkorderFilterVM
            {
                Id = s.Id,
                Priority = s.Priority,
                Status = s.Status,
                WorkerOrderNumber = s.WorkerOrderNumber,
                WorkerOrderTitle = s.WorkerOrderTitle,
                DueDate = s.DueDate,
                AssignToUserName = s.AssignToUser != null ? s.AssignToUser.FirstName : "",
                LocationName = s.Locations != null ? s.Locations.Name : "",
                LocationId = s.LocationId,
                PO = s.PO,
                TT = s.TT,
            }).ToList();
            return Ok(data);
        }
        [HttpPost]
        [Route("DispatchToVendor")]
        public async Task<IActionResult> DispatchToVendor([FromBody] Dispatch_DTO model)
        {
            try
            {
                var allWorkOrders = await _workOrderDataService.GetAllWithDetailsAsync();
                var workOrders = allWorkOrders.Where(w => model.WorkOrderIds.Contains(w.Id)).ToList();

                if (workOrders.Count == 0)
                    return BadRequest(new Response { Status = "Error", Message = "No work orders found" });

                var primaryWO = workOrders.First();

                var lastPO = await _dispatchDataService.GenerateNextPONumberAsync();
                int nextPO = int.TryParse(lastPO, out var po) ? po : 1;

                var lastDSP = await _dispatchDataService.GenerateNextDispatchNumberAsync();
                int nextDSP = lastDSP.StartsWith("DSP-") && int.TryParse(lastDSP.Substring(4), out var dspNum) ? dspNum : 1;

                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
                var currentUser = userId != null ? await _userDataService.GetByIdAsync(userId) : null;
                var senderName = currentUser != null ? (currentUser.FirstName + " " + currentUser.LastName).Trim() : "";
                var dispatches = new List<object>();

                foreach (var vendorId in model.VendorIds)
                {
                    var vendor = await _vendorDataService.GetByIdAsync(vendorId);
                    if (vendor == null) continue;

                    var poNumber = $"VPO-{nextPO:D5}";
                    nextPO++;
                    var dispatchNumber = $"DSP-{nextDSP:D5}";
                    nextDSP++;

                    var replyTo = $"wo-{primaryWO.InternalWONumber}-{dispatchNumber}@int.seahaven.com";

                    var dispatch = new Dispatch
                    {
                        WorkOrderId = primaryWO.Id,
                        VendorId = vendorId,
                        DispatchNumber = dispatchNumber,
                        PONumber = poNumber,
                        NTEAmount = model.NTEAmount,
                        Description = model.Description,
                        Status = "Sent",
                        ScheduledDate = model.ScheduledDate,
                        DispatchedAt = DateTime.UtcNow,
                        ReplyToAddress = replyTo,
                        DispatchWorkOrders = workOrders.Select(wo => new DispatchWorkOrder { WorkOrderId = wo.Id }).ToList()
                    };

                    var checklistItems = new List<DispatchChecklistItem>();
                    if (model.TaskListTemplateId.HasValue)
                    {
                        var template = await _taskListTemplateDataService.GetByIdWithItemsAsync(model.TaskListTemplateId.Value);
                        if (template?.Items != null)
                        {
                            checklistItems.AddRange(template.Items.OrderBy(i => i.SortOrder).Select((i, idx) =>
                                new DispatchChecklistItem { ItemText = i.ItemText, SortOrder = idx }));
                        }
                    }
                    if (model.CustomChecklistItems != null)
                    {
                        var startIdx = checklistItems.Count;
                        checklistItems.AddRange(model.CustomChecklistItems.Select((text, idx) =>
                            new DispatchChecklistItem { ItemText = text, SortOrder = startIdx + idx }));
                    }
                    dispatch.ChecklistItems = checklistItems;

                    var woListHtml = string.Join("", workOrders.Select(wo =>
                        $"<tr><td style='padding:6px 8px;border:1px solid #ddd;'>{System.Net.WebUtility.HtmlEncode(wo.InternalWONumber ?? "")}</td>" +
                        $"<td style='padding:6px 8px;border:1px solid #ddd;'>{System.Net.WebUtility.HtmlEncode(wo.WorkerOrderTitle ?? "")}</td>" +
                        $"<td style='padding:6px 8px;border:1px solid #ddd;'>{System.Net.WebUtility.HtmlEncode(wo.Priority ?? "")}</td>" +
                        $"<td style='padding:6px 8px;border:1px solid #ddd;'>{wo.DueDate?.ToString("yyyy-MM-dd") ?? "N/A"}</td></tr>"));

                    var locationName = System.Net.WebUtility.HtmlEncode(primaryWO.Locations?.Name ?? "");
                    var locationAddr = System.Net.WebUtility.HtmlEncode(primaryWO.Locations?.Address1 ?? "");
                    var subject = $"[{dispatchNumber}] {(workOrders.Count > 1 ? $"{workOrders.Count} Work Orders" : primaryWO.WorkerOrderTitle)} at {primaryWO.Locations?.Name ?? ""}";
                    var descriptionHtml = System.Net.WebUtility.HtmlEncode(model.Description ?? primaryWO.Description ?? "");
                    var senderNameHtml = System.Net.WebUtility.HtmlEncode(senderName);

                    var vendorToken = await _vendorTokens.GetOrCreateActiveTokenAsync(vendorId);
                    var frontendBase = _config.GetValue<string>("FrontendBaseUrl")?.TrimEnd('/') ?? "";
                    var portalUrl = $"{frontendBase}/v/{vendorToken.Token}/dashboard";

                    var html = $@"
                        <h2>Work Order Dispatch — {dispatchNumber}</h2>
                        <p><strong>Location:</strong> {locationName} {locationAddr}</p>
                        <p><strong>Vendor PO:</strong> {poNumber} &nbsp; <strong>NTE:</strong> ${model.NTEAmount?.ToString("F2") ?? "N/A"}</p>
                        <h3>Work Orders</h3>
                        <table style='border-collapse:collapse;width:100%;font-family:Arial,sans-serif;'>
                            <tr style='background:#f5f5f5;'>
                                <th style='padding:6px 8px;border:1px solid #ddd;text-align:left;'>WO #</th>
                                <th style='padding:6px 8px;border:1px solid #ddd;text-align:left;'>Title</th>
                                <th style='padding:6px 8px;border:1px solid #ddd;text-align:left;'>Priority</th>
                                <th style='padding:6px 8px;border:1px solid #ddd;text-align:left;'>Due Date</th>
                            </tr>
                            {woListHtml}
                        </table>
                        <h3>Description</h3>
                        <p>{descriptionHtml}</p>
                        <br/>
                        <div style='text-align:center;margin:20px 0;'>
                            <a href='{portalUrl}' style='display:inline-block;padding:12px 32px;background:#28a745;color:white;text-decoration:none;border-radius:6px;font-weight:bold;font-size:16px;'>View Work Order</a>
                        </div>
                        <br/><p style='color:#666;font-size:13px;'>{senderNameHtml}<br/>Sea Haven Industries</p>
                        <hr/><p style='color:#999;font-size:12px;'>Reply to this email to communicate about this dispatch.</p>";

                    var emailSent = await _sendMessage.SendDispatchEmail(vendor.Email, subject, html, replyTo);
                    dispatch.EmailSent = emailSent;

                    var savedDispatch = await _dispatchDataService.AddAsync(dispatch);

                    foreach (var wo in workOrders)
                    {
                        await _workOrderDataService.AddAuditLogAsync(new WorkOrderAuditLog
                        {
                            WorkOrderId = wo.Id,
                            UserId = userId,
                            FieldName = "Dispatch",
                            OldValue = "",
                            NewValue = $"{vendor.CompanyName} ({dispatchNumber})",
                            Action = AuditAction.Dispatch.ToString(),
                            CreatedAt = DateTime.UtcNow
                        });
                    }

                    dispatches.Add(new { savedDispatch.Id, dispatchNumber, poNumber, vendorName = vendor.CompanyName, savedDispatch.Status, workOrderCount = workOrders.Count });
                }

                return Ok(new { message = "Dispatched", dispatches });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpGet("GetDispatches/{workOrderId}")]
        public async Task<IActionResult> GetDispatches(int workOrderId)
        {
            var dispatches = await _dispatchDataService.GetByWorkOrderIdAsync(workOrderId);
            var data = dispatches.OrderByDescending(d => d.DispatchedAt).Select(d => new
            {
                d.Id,
                d.DispatchNumber,
                d.PONumber,
                d.NTEAmount,
                d.Description,
                d.Status,
                d.ScheduledDate,
                d.CompletedDate,
                d.DispatchedAt,
                d.EmailSent,
                vendorName = d.Vendor != null ? d.Vendor.CompanyName : "",
                vendorEmail = d.Vendor != null ? d.Vendor.Email : "",
                vendorId = d.VendorId
            }).ToList();
            return Ok(data);
        }

        [HttpGet("GetDispatch/{id}")]
        public async Task<IActionResult> GetDispatchById(int id)
        {
            var d = await _db.Dispatches
                .Include(x => x.Vendor)
                .Include(x => x.WorkOrder)
                .Where(x => x.Id == id)
                .Select(x => new
                {
                    x.Id,
                    x.DispatchNumber,
                    x.PONumber,
                    x.NTEAmount,
                    x.Description,
                    x.Status,
                    x.ScheduledDate,
                    x.CompletedDate,
                    x.DispatchedAt,
                    x.EmailSent,
                    x.WorkOrderId,
                    x.AcknowledgedAt,
                    x.VerifiedBy,
                    x.VerifiedAt,
                    woNumber = x.WorkOrder != null ? x.WorkOrder.InternalWONumber : "",
                    woTitle = x.WorkOrder != null ? x.WorkOrder.WorkerOrderTitle : "",
                    vendorName = x.Vendor != null ? x.Vendor.CompanyName : "",
                    vendorEmail = x.Vendor != null ? x.Vendor.Email : "",
                    vendorId = x.VendorId,
                    workOrders = _db.DispatchWorkOrders
                        .Where(dwo => dwo.DispatchId == x.Id)
                        .Select(dwo => new {
                            dwo.WorkOrderId,
                            woNumber = dwo.WorkOrder != null ? dwo.WorkOrder.InternalWONumber : "",
                            woTitle = dwo.WorkOrder != null ? dwo.WorkOrder.WorkerOrderTitle : ""
                        }).ToList(),
                    checklistItems = _db.DispatchChecklistItems
                        .Where(ci => ci.DispatchId == x.Id)
                        .OrderBy(ci => ci.SortOrder)
                        .Select(ci => new {
                            ci.Id,
                            ci.ItemText,
                            ci.IsCompleted,
                            ci.CompletedBy,
                            ci.CompletedAt,
                            ci.SortOrder,
                            ci.WorkOrderId
                        }).ToList(),
                    signoffs = _db.DispatchSignoffs
                        .Where(s => s.DispatchId == x.Id)
                        .Select(s => new {
                            s.Id,
                            s.SignoffType,
                            s.Name,
                            s.Signature,
                            s.SignatureMethod,
                            s.SignedAt
                        }).ToList(),
                    comments = _db.Comments
                        .Where(c => c.DispatchId == x.Id)
                        .OrderBy(c => c.CreatedDate)
                        .Select(c => new
                        {
                            c.Id,
                            c.CreatedDate,
                            c.Commenttext,
                            c.Commenter,
                            c.CommentType,
                            userName = c.ApplicationUser != null ? c.ApplicationUser.FirstName + " " + c.ApplicationUser.LastName : ""
                        }).ToList()
                }).FirstOrDefaultAsync();

            if (d == null)
                return NotFound(new Response { Status = "Error", Message = "Dispatch not found" });
            return Ok(d);
        }

        [HttpPost("UpdateDispatch")]
        public async Task<IActionResult> UpdateDispatch([FromBody] UpdateDispatch_DTO model)
        {
            try
            {
                var dispatch = await _db.Dispatches.FindAsync(model.Id);
                if (dispatch == null)
                    return BadRequest(new Response { Status = "Error", Message = "Dispatch not found" });

                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);

                if (dispatch.Status != model.Status)
                {
                    _db.WorkOrderAuditLogs.Add(new WorkOrderAuditLog
                    {
                        WorkOrderId = dispatch.WorkOrderId ?? 0,
                        UserId = userId,
                        FieldName = $"Dispatch {dispatch.DispatchNumber} Status",
                        OldValue = dispatch.Status ?? "",
                        NewValue = model.Status ?? "",
                        Action = "dispatch_status_change",
                        CreatedAt = DateTime.UtcNow
                    });
                }

                dispatch.Status = model.Status;
                dispatch.NTEAmount = model.NTEAmount;
                dispatch.ScheduledDate = model.ScheduledDate;
                dispatch.CompletedDate = model.CompletedDate;
                dispatch.Description = model.Description;

                if (model.Status == "Completed" && dispatch.CompletedDate == null)
                    dispatch.CompletedDate = DateTime.UtcNow;

                await _db.SaveChangesAsync();
                return Ok(new { message = "Dispatch updated" });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpPost("AddDispatchComment")]
        public async Task<IActionResult> AddDispatchComment([FromBody] DispatchComment_DTO model)
        {
            try
            {
                var dispatch = await _db.Dispatches.Include(d => d.Vendor).Include(d => d.WorkOrder)
                    .FirstOrDefaultAsync(d => d.Id == model.DispatchId);
                if (dispatch == null)
                    return BadRequest(new Response { Status = "Error", Message = "Dispatch not found" });

                var userId = _httpContext?.HttpContext?.User?.FindFirst(ClaimTypes.NameIdentifier)?.Value ?? "";
                var user = !string.IsNullOrEmpty(userId) ? await _db.Users.FindAsync(userId) : null;
                var senderName = user != null ? (user.FirstName + " " + user.LastName).Trim() : "";

                var comment = new Comments
                {
                    CreatedDate = DateTime.UtcNow,
                    UserId = userId,
                    WorkerOrderId = dispatch.WorkOrderId,
                    DispatchId = dispatch.Id,
                    Commenttext = model.Text,
                    CommentType = "dispatcher",
                    Commenter = !string.IsNullOrWhiteSpace(senderName) ? senderName : null,
                };
                _db.Comments.Add(comment);
                await _db.SaveChangesAsync();

                if (model.SendEmail && dispatch.Vendor?.Email != null && dispatch.WorkOrder != null)
                {
                    var subject = $"[WO-{dispatch.WorkOrder.InternalWONumber}-{dispatch.DispatchNumber}] {dispatch.WorkOrder.WorkerOrderTitle}";
                    var html = $"<p>{model.Text}</p><br/><p style='color:#666;font-size:13px;'>{senderName}<br/>Sea Haven Industries</p><hr/><p style='color:#999;font-size:12px;'>Reply to this email to respond.</p>";
                    await _sendMessage.SendDispatchEmail(dispatch.Vendor.Email, subject, html, dispatch.ReplyToAddress);
                }
                return Ok(new
                {
                    comment.Id,
                    comment.CreatedDate,
                    comment.Commenttext,
                    comment.CommentType,
                    userName = user != null ? (user.FirstName + " " + user.LastName).Trim() : ""
                });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        private static string? ExtractZip(string? address)
        {
            if (string.IsNullOrWhiteSpace(address)) return null;
            var match = System.Text.RegularExpressions.Regex.Match(address, @"\b(\d{5})(?:-\d{4})?\b");
            return match.Success ? match.Groups[1].Value : null;
        }

        [HttpPost("VerifyDispatch")]
        public async Task<IActionResult> VerifyDispatch(int dispatchId)
        {
            try
            {
                var dispatch = await _db.Dispatches.FindAsync(dispatchId);
                if (dispatch == null)
                    return BadRequest(new Response { Status = "Error", Message = "Dispatch not found" });

                var incompleteItems = await _db.DispatchChecklistItems
                    .Where(c => c.DispatchId == dispatchId && !c.IsCompleted)
                    .CountAsync();

                var signoffCount = await _db.DispatchSignoffs
                    .Where(s => s.DispatchId == dispatchId)
                    .CountAsync();

                var missing = new List<string>();
                if (incompleteItems > 0)
                    missing.Add($"{incompleteItems} checklist item(s) incomplete");
                if (signoffCount < 2)
                {
                    var existingTypes = await _db.DispatchSignoffs
                        .Where(s => s.DispatchId == dispatchId)
                        .Select(s => s.SignoffType)
                        .ToListAsync();
                    if (!existingTypes.Contains("Customer")) missing.Add("Missing Customer sign-off");
                    if (!existingTypes.Contains("Vendor")) missing.Add("Missing Vendor sign-off");
                }

                if (missing.Count > 0)
                    return BadRequest(new { status = "Error", message = "Cannot verify", missing });

                var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
                var user = userId != null ? await _db.Users.FindAsync(userId) : null;
                var userName = user != null ? (user.FirstName + " " + user.LastName).Trim() : "";

                dispatch.Status = "Verified";
                dispatch.VerifiedBy = userName;
                dispatch.VerifiedAt = DateTime.UtcNow;

                _db.WorkOrderAuditLogs.Add(new WorkOrderAuditLog
                {
                    WorkOrderId = dispatch.WorkOrderId ?? 0,
                    UserId = userId,
                    FieldName = $"Dispatch {dispatch.DispatchNumber}",
                    OldValue = dispatch.Status ?? "",
                    NewValue = "Verified",
                    Action = "dispatch_verified",
                    CreatedAt = DateTime.UtcNow
                });

                await _db.SaveChangesAsync();
                return Ok(new { message = "Dispatch verified", verifiedBy = userName, verifiedAt = dispatch.VerifiedAt });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpPost("AddDispatchSignoff")]
        public async Task<IActionResult> AddDispatchSignoff([FromBody] DispatchSignoff_DTO model)
        {
            try
            {
                var dispatch = await _db.Dispatches.FindAsync(model.DispatchId);
                if (dispatch == null)
                    return BadRequest(new Response { Status = "Error", Message = "Dispatch not found" });

                var existing = await _db.DispatchSignoffs
                    .AnyAsync(s => s.DispatchId == model.DispatchId && s.SignoffType == model.SignoffType);
                if (existing)
                    return BadRequest(new Response { Status = "Error", Message = $"{model.SignoffType} sign-off already exists" });

                var signoff = new DispatchSignoff
                {
                    DispatchId = model.DispatchId,
                    SignoffType = model.SignoffType,
                    Name = model.Name,
                    Signature = model.Signature,
                    SignatureMethod = model.SignatureMethod,
                    SignedAt = DateTime.UtcNow
                };
                _db.DispatchSignoffs.Add(signoff);
                await _db.SaveChangesAsync();

                return Ok(new { signoff.Id, signoff.SignoffType, signoff.Name, signoff.SignedAt, signoff.SignatureMethod });
            }
            catch (Exception ex)
            {
                return BadRequest(new Response { Status = "Error", Message = ex.Message });
            }
        }

        [HttpPost("UpdateChecklistItem")]
        public async Task<IActionResult> UpdateChecklistItem([FromBody] ChecklistItemUpdate_DTO model)
        {
            var item = await _dispatchDataService.GetChecklistItemByIdAsync(model.Id);
            if (item == null)
                return NotFound(new Response { Status = "Error", Message = "Checklist item not found" });

            item.IsCompleted = model.IsCompleted;
            item.CompletedBy = model.IsCompleted ? model.CompletedBy : null;
            item.CompletedAt = model.IsCompleted ? DateTime.UtcNow : null;
            await _dispatchDataService.UpdateChecklistItemAsync(item);
            return Ok(new { message = "Updated", item.Id, item.IsCompleted, item.CompletedBy, item.CompletedAt });
        }

        [HttpPost("AddChecklistItem")]
        public async Task<IActionResult> AddChecklistItem([FromBody] AddChecklistItem_DTO model)
        {
            var checklistItems = await _dispatchDataService.GetChecklistItemsAsync(model.DispatchId);
            var maxSort = checklistItems.Any() ? checklistItems.Max(c => c.SortOrder) : -1;

            var item = new DispatchChecklistItem
            {
                DispatchId = model.DispatchId,
                WorkOrderId = model.WorkOrderId,
                ItemText = model.ItemText,
                SortOrder = maxSort + 1,
                IsCompleted = false
            };
            await _dispatchDataService.AddChecklistItemAsync(item);
            return Ok(new { item.Id, item.ItemText, item.SortOrder, item.IsCompleted });
        }

        private async Task<string> GenerateInternalWONumber()
        {
            return await _workOrderDataService.GenerateNextInternalWONumberAsync();
        }

        private async Task<string> SaveFileAsync(IFormFile file)
        {
            var fileName = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
            var uniqueFileName = $"{Guid.NewGuid()}_{fileName}";
            var uploadPath = Path.Combine("Assets", "Documents");
            var fullPath = Path.Combine(_webHostEnvironment.WebRootPath, uploadPath, uniqueFileName);

            Directory.CreateDirectory(Path.GetDirectoryName(fullPath)!);

            using (var stream = System.IO.File.Create(fullPath))
            {
                await file.CopyToAsync(stream);
            }

            var request = _httpContext.HttpContext!.Request;
            var domain = $"{request.Scheme}://{request.Host}";
            return $"{domain}/{uploadPath.Replace("\\", "/")}/{uniqueFileName}";
        }

        public class WorkorderFilterVM
        {
            public int? Id { get; set; }
            public int? LocationId { get; set; }
            public string? WorkerOrderNumber { get; set; }
            public string? BillingAddress { get; set; } = "Amazon.com Services LLC 410 Terry Ave,North Seattle, Washington, 98109";

            public string? WorkerOrderTitle { get; set; }
            public string? LocationName { get; set; }
            public string? AssignToUserName { get; set; }
            public string? Priority { get; set; }
            public string? Status { get; set; }
            public DateTime? DueDate { get; set; }
            public string FormattedDueDate
            {
                get { return DueDate.HasValue ? DueDate.Value.ToString("MM/dd/yyyy") : ""; }
            }
            public string? Dispatcher { get; set; }
            public string? Scheduler { get; set; }
            public string? PO { get; set; }
            public string? TT { get; set; }
        }
    }
}