using Microsoft.AspNetCore.Mvc;
using Nop.Web.Areas.Admin.Controllers;
using Nop.Web.Framework.Mvc.Filters;
using Nop.Web.Framework;
using Nop.Services.Security;
using Microsoft.AspNetCore.Http;
using Nop.Plugin.Misc.FruitBankPlugin.Areas.Admin.Models;
using Nop.Services.Messages;

namespace Nop.Plugin.Misc.FruitBankPlugin.Areas.Admin.Controllers
{
    [Area(AreaNames.ADMIN)]
    [AuthorizeAdmin]  
    public class ShipmentController : BaseAdminController
    {
        private readonly IPermissionService _permissionService;
        protected readonly INotificationService _notificationService;

        public ShipmentController(IPermissionService permissionService, INotificationService notificationService)
        {
            _permissionService = permissionService;
            _notificationService = notificationService;
        }

        public async Task<IActionResult> List()
        {
            if (!await _permissionService.AuthorizeAsync(StandardPermission.Security.ACCESS_ADMIN_PANEL))
                return AccessDeniedView();

            return View("~/Plugins/Misc.FruitBankPlugin/Areas/Admin/Views/Shipment/List.cshtml");
        }

        [HttpGet]
        public async Task<IActionResult> Create()
        {
            if (!await _permissionService.AuthorizeAsync(StandardPermission.Security.ACCESS_ADMIN_PANEL))
                return AccessDeniedView();

            var model = new CreateShipmentModel
            {
                ShipmentDate = DateTime.Now
            };

            return View("~/Plugins/Misc.FruitBankPlugin/Areas/Admin/Views/Shipment/Create.cshtml", model);
        }

        [HttpPost]
        public async Task<IActionResult> Create(CreateShipmentModel model)
        {
            if (!await _permissionService.AuthorizeAsync(StandardPermission.Security.ACCESS_ADMIN_PANEL))
                return AccessDeniedView();

            if (!ModelState.IsValid)
            {
                return View("~/Plugins/Misc.FruitBankPlugin/Areas/Admin/Views/Shipment/Create.cshtml", model);
            }

            try
            {
                // TODO: Save shipment to database
                // var shipment = new Shipment
                // {
                //     Name = model.ShipmentName,
                //     Description = model.Description,
                //     ShipmentDate = model.ShipmentDate,
                //     TrackingNumber = model.TrackingNumber,
                //     CreatedOnUtc = DateTime.UtcNow
                // };
                // await _shipmentService.InsertShipmentAsync(shipment);

                _notificationService.SuccessNotification("Shipment created successfully");
                return RedirectToAction("List");
            }
            catch (Exception ex)
            {
                _notificationService.ErrorNotification($"Error creating shipment: {ex.Message}");
                return View("~/Plugins/Misc.FruitBankPlugin/Areas/Admin/Views/Shipment/Create.cshtml", model);
            }
        }

        [HttpPost]
        public async Task<IActionResult> UploadFile(IFormFile file)
        {
            try
            {
                if (file == null || file.Length == 0)
                    return Json(new FileUploadResult { Success = false, ErrorMessage = "No file selected" });

                // Validate file type (PDF only)
                if (!file.ContentType.Equals("application/pdf", StringComparison.OrdinalIgnoreCase))
                    return Json(new FileUploadResult { Success = false, ErrorMessage = "Only PDF files are allowed" });

                // Validate file size (e.g., max 10MB)
                if (file.Length > 10 * 1024 * 1024)
                    return Json(new FileUploadResult { Success = false, ErrorMessage = "File size must be less than 10MB" });

                // Create upload directory if it doesn't exist
                var uploadsPath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", "uploads", "shipments");
                Directory.CreateDirectory(uploadsPath);

                // Generate unique filename
                var fileName = $"{Guid.NewGuid()}_{file.FileName}";
                var filePath = Path.Combine(uploadsPath, fileName);

                // Save file
                using (var stream = new FileStream(filePath, FileMode.Create))
                {
                    await file.CopyToAsync(stream);
                }

                return Json(new FileUploadResult
                {
                    Success = true,
                    FileName = file.FileName,
                    FilePath = $"/uploads/shipments/{fileName}"
                });
            }
            catch (Exception ex)
            {
                return Json(new FileUploadResult { Success = false, ErrorMessage = ex.Message });
            }
        }

        [HttpPost]
        public IActionResult DeleteUploadedFile(string filePath)
        {
            try
            {
                if (string.IsNullOrEmpty(filePath))
                    return Json(new { success = false, message = "Invalid file path" });

                var fullPath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", filePath.TrimStart('/'));

                if (System.IO.File.Exists(fullPath))
                {
                    System.IO.File.Delete(fullPath);
                    return Json(new { success = true });
                }

                return Json(new { success = false, message = "File not found" });
            }
            catch (Exception ex)
            {
                return Json(new { success = false, message = ex.Message });
            }
        }

    }
}