using AutoMapper;
using Marco.Pms.Model.Dtos.Collection;
using Marco.Pms.Model.Dtos.PurchaseInvoice;
using Marco.Pms.Model.Utilities;
using Marco.Pms.Services.Service.ServiceInterfaces;
using MarcoBMS.Services.Helpers;
using Microsoft.AspNetCore.JsonPatch;
using Microsoft.AspNetCore.Mvc;

namespace Marco.Pms.Services.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class PurchaseInvoiceController : ControllerBase
    {
        private readonly UserHelper _userHelper;
        private readonly IPurchaseInvoiceService _purchaseInvoiceService;
        private readonly ISignalRService _signalR;
        private readonly IServiceScopeFactory _serviceScopeFactory;
        private readonly Guid tenantId;

        public PurchaseInvoiceController(UserHelper userHelper, IPurchaseInvoiceService purchaseInvoiceService, ISignalRService signalR, IServiceScopeFactory serviceScopeFactory)
        {
            _userHelper = userHelper;
            _purchaseInvoiceService = purchaseInvoiceService;
            tenantId = _userHelper.GetTenantId();
            _signalR = signalR;
            _serviceScopeFactory = serviceScopeFactory;
        }

        #region =================================================================== Purchase Invoice Functions ===================================================================

        /// <summary>
        /// Retrieves a list of purchase invoices based on search string, filter, activity status, page size, and page number.
        /// </summary>
        /// <param name="searchString">Optional search string to filter invoices by.</param>
        /// <param name="filter">Optional filter to apply to the invoices.</param>
        /// <param name="isActive">Optional flag to filter invoices by activity status.</param>
        /// <param name="pageSize">The number of invoices to display per page.</param>
        /// <param name="pageNumber">The requested page number (1-based).</param>
        /// <param name="cancellationToken">Token to propagate notification that operations should be canceled.</param>
        /// <returns>A HTTP 200 OK response with a list of purchase invoices or an appropriate HTTP error code.</returns>
        [HttpGet("list")]
        public async Task<IActionResult> GetPurchaseInvoiceList([FromQuery] string? searchString, [FromQuery] string? filter, CancellationToken cancellationToken, [FromQuery] bool isActive = true,
            [FromQuery] int pageSize = 20, [FromQuery] int pageNumber = 1)
        {
            // Get the currently logged-in employee
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();

            // Retrieve the purchase invoice list using the service
            var response = await _purchaseInvoiceService.GetPurchaseInvoiceListAsync(searchString, filter, isActive, pageSize, pageNumber, loggedInEmployee, tenantId, cancellationToken);

            // Return the response with the appropriate HTTP status code
            return StatusCode(response.StatusCode, response);
        }

        [HttpGet("details/{id}")]
        public async Task<IActionResult> GetPurchaseInvoiceDetails(Guid id, CancellationToken cancellationToken)
        {
            // Get the currently logged-in employee
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();

            // Retrieve the purchase invoice details using the service
            var response = await _purchaseInvoiceService.GetPurchaseInvoiceDetailsAsync(id, loggedInEmployee, tenantId, cancellationToken);

            // Return the response with the appropriate HTTP status code
            return StatusCode(response.StatusCode, response);
        }


        /// <summary>
        /// Creates a purchase invoice.
        /// </summary>
        /// <param name="model">The purchase invoice model.</param>
        /// <param name="ct">The cancellation token.</param>
        /// <returns>The HTTP response for the creation of the purchase invoice.</returns>
        [HttpPost("create")]
        public async Task<IActionResult> CreatePurchaseInvoice([FromBody] PurchaseInvoiceDto model, CancellationToken ct)
        {
            // Get the currently logged-in employee
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();

            // Create a purchase invoice using the purchase invoice service
            var response = await _purchaseInvoiceService.CreatePurchaseInvoiceAsync(model, loggedInEmployee, tenantId, ct);

            // If the creation is successful, send a notification to the SignalR service
            if (response.Success)
            {
                var notification = new
                {
                    LoggedInUserId = loggedInEmployee.Id,
                    Keyword = "Purchase_Invoice",
                    Response = response.Data
                };
                await _signalR.SendNotificationAsync(notification);
            }

            // Return the HTTP response
            return StatusCode(response.StatusCode, response);
        }

        [HttpPatch("edit/{id}")]
        public async Task<IActionResult> EditPurchaseInvoice(Guid id, [FromBody] JsonPatchDocument<PurchaseInvoiceDto> patchDoc, CancellationToken ct)
        {
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            var existingPurchaseInvoice = await _purchaseInvoiceService.GetPurchaseInvoiceByIdAsync(id, tenantId, ct);
            if (existingPurchaseInvoice == null)
                return NotFound(ApiResponse<object>.ErrorResponse("Invalid purchase invoice ID", "Invalid purchase invoice ID", 404));

            using var scope = _serviceScopeFactory.CreateScope();
            var mapper = scope.ServiceProvider.GetRequiredService<IMapper>();
            var modelToPatch = mapper.Map<PurchaseInvoiceDto>(existingPurchaseInvoice);

            // Apply the JSON Patch document to the DTO and check model state validity
            patchDoc.ApplyTo(modelToPatch, ModelState);
            if (!ModelState.IsValid)
            {
                return BadRequest(ApiResponse<object>.ErrorResponse("Validation failed", "Provided patch document values are invalid", 400));
            }

            var response = await _purchaseInvoiceService.UpdatePurchaseInvoiceAsync(id, existingPurchaseInvoice, modelToPatch, loggedInEmployee, tenantId, ct);
            return StatusCode(response.StatusCode, response);
        }

        [HttpDelete("delete/{id}")]
        public async Task<IActionResult> DeletePurchaseInvoice(Guid id, CancellationToken ct, [FromQuery] bool isActive = false)
        {
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            var response = await _purchaseInvoiceService.DeletePurchaseInvoiceAsync(id, isActive, loggedInEmployee, tenantId, ct);
            if (response.Success)
            {
                var notification = new
                {
                    LoggedInUserId = loggedInEmployee.Id,
                    Keyword = "Purchase_Invoice",
                    Response = response.Data
                };
                await _signalR.SendNotificationAsync(notification);
            }
            return StatusCode(response.StatusCode, response);
        }

        #endregion

        #region =================================================================== Delivery Challan Functions ===================================================================

        [HttpGet("delivery-challan/list/{purchaseInvoiceId}")]
        public async Task<IActionResult> GetDeliveryChallans(Guid purchaseInvoiceId, CancellationToken cancellationToken)
        {
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            var response = await _purchaseInvoiceService.GetDeliveryChallansAsync(purchaseInvoiceId, loggedInEmployee, tenantId, cancellationToken);
            return StatusCode(response.StatusCode, response);
        }

        /// <summary>
        /// Adds a delivery challan.
        /// </summary>
        /// <param name="model">The delivery challan model.</param>
        /// <param name="ct">The cancellation token.</param>
        /// <returns>The HTTP response for adding the delivery challan.</returns>
        [HttpPost("delivery-challan/create")]
        public async Task<IActionResult> AddDeliveryChallan([FromBody] DeliveryChallanDto model, CancellationToken ct)
        {
            // Get the currently logged-in employee
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();

            // Add the delivery challan using the purchase invoice service
            var response = await _purchaseInvoiceService.AddDeliveryChallanAsync(model, loggedInEmployee, tenantId, ct);

            // If the addition is successful, send a notification to the SignalR service
            if (response.Success)
            {
                var notification = new
                {
                    LoggedInUserId = loggedInEmployee.Id,
                    Keyword = "Delivery_Challan",
                    Response = response.Data
                };
                await _signalR.SendNotificationAsync(notification);
            }

            // Return the HTTP response
            return StatusCode(response.StatusCode, response);
        }

        #endregion

        #region =================================================================== Purchase Invoice History Functions ===================================================================
        [HttpGet("payment-history/list/{purchaseInvoiceId}")]
        public async Task<IActionResult> GetPurchaseInvoiceHistoryList(Guid purchaseInvoiceId, CancellationToken cancellationToken)
        {
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            var response = await _purchaseInvoiceService.GetPurchaseInvoiceHistoryListAsync(purchaseInvoiceId, loggedInEmployee, tenantId, cancellationToken);
            return StatusCode(response.StatusCode, response);
        }

        [HttpPost("add/payment")]
        public async Task<IActionResult> AddPurchaseInvoicePayment([FromBody] ReceivedInvoicePaymentDto model, CancellationToken ct)
        {
            var loggedInEmployee = await _userHelper.GetCurrentEmployeeAsync();
            var response = await _purchaseInvoiceService.AddPurchaseInvoicePaymentAsync(model, loggedInEmployee, tenantId, ct);
            if (response.Success)
            {
                var notification = new
                {
                    LoggedInUserId = loggedInEmployee.Id,
                    Keyword = "Purchase_Invoice_Payment",
                    Response = response.Data
                };
                await _signalR.SendNotificationAsync(notification);
            }

            // Return the HTTP response
            return StatusCode(response.StatusCode, response);
        }
        #endregion
    }
}