using Fitness_core_BE.DTOs.PlatformBilling;
using Fitness_core_BE.Helpers;
using Fitness_core_BE.Interfaces.Services;
using Fitness_core_BE.Models.IOs;
using Microsoft.AspNetCore.Mvc;
using static Fitness_core_BE.Helpers.JwtMiddleware;
using static Fitness_core_BE.Helpers.ApiResponseHelper;

namespace Fitness_core_BE.Controllers
{
    // The gym owner's own HexaFitness platform subscription bill — distinct from
    // CustomerPaymentsController, which handles invoices billed to gym members.
    [ApiController]
    [Route("api/client")]
    public class ClientInvoiceController : ControllerBase
    {
        private readonly IClientInvoiceService _clientInvoiceService;
        private readonly IPaymentService _paymentService;
        private readonly IReceiptService _receiptService;
        private readonly IClientPaymentMethodService _clientPaymentMethodService;
        private readonly UserRoleHelper _userRoleHelper;

        public ClientInvoiceController(
            IClientInvoiceService clientInvoiceService,
            IPaymentService paymentService,
            IReceiptService receiptService,
            IClientPaymentMethodService clientPaymentMethodService,
            UserRoleHelper userRoleHelper)
        {
            _clientInvoiceService = clientInvoiceService;
            _paymentService = paymentService;
            _receiptService = receiptService;
            _clientPaymentMethodService = clientPaymentMethodService;
            _userRoleHelper = userRoleHelper;
        }

        [CustomMiddleware]
        [TenantResolution]
        [RequiresPermission("billing")]
        [HttpGet("customer-invoices")]
        public async Task<ActionResult<ApiResponse<object>>> GetCustomerInvoices()
        {
            var clientId = await _userRoleHelper.GetClientId(DataExtractor.GetUserIdFromContext(HttpContext));
            return Response(await _clientInvoiceService.GetClientInvoicesByClientId(new { clientId }, HttpContext));
        }

        [CustomMiddleware]
        [TenantResolution]
        [RequiresPermission("billing")]
        [HttpGet("customer-invoices/{id:guid}")]
        public async Task<ActionResult<ApiResponse<object>>> GetCustomerInvoice(Guid id)
            => Response(await _clientInvoiceService.GetClientInvoiceById(new { clientInvoiceId = id }, HttpContext));

        // Pay this gym's own HexaFitness platform invoice. Records a pending payment
        // attempt (an admin approves it, which flips the invoice to Paid and issues a receipt).
        [CustomMiddleware]
        [TenantResolution]
        [RequiresPermission("billing")]
        [HttpPost("customer-invoices/{id:guid}/pay")]
        public async Task<ActionResult<ApiResponse<object>>> PayCustomerInvoice(Guid id, [FromBody] PayPlatformInvoiceRequest request)
            => Response(await _paymentService.CreateClientPayment(new
            {
                clientInvoiceId = id,
                payAmount = request.PayAmount,
                cardId = request.CardId,
                payNote = request.PayNote
            }, HttpContext));

        // Branded receipt PDF for a platform invoice (download), once paid.
        [CustomMiddleware]
        [TenantResolution]
        [RequiresPermission("billing")]
        [HttpGet("customer-invoices/{id:guid}/receipt.pdf")]
        public async Task<IActionResult> DownloadPlatformInvoiceReceipt(Guid id)
        {
            var clientId = await _userRoleHelper.GetClientId(DataExtractor.GetUserIdFromContext(HttpContext));
            var model = await _receiptService.BuildForClientInvoiceAsync(id, requireClientId: clientId);
            var pdf = _receiptService.GeneratePdf(model);
            return File(pdf, "application/pdf", $"{model.ReceiptNo}.pdf");
        }

        // The gym's own saved card(s) for paying their HexaFitness platform subscription
        // (real Payment-Service-backed flow — distinct from the manual PayCustomerInvoice
        // above, which just records a pending payment for an admin to approve).

        [CustomMiddleware]
        [RequiresPermission("billing")]
        [HttpPost("customer-invoices/cards/onboard")]
        public async Task<ActionResult<ApiResponse<StartCardOnboardingResult>>> StartCardOnboarding(
            [FromBody] StartCardOnboardingRequest request)
            => Response(await _clientPaymentMethodService.StartCardOnboardingAsync(HttpContext, request));

        [CustomMiddleware]
        [RequiresPermission("billing")]
        [HttpGet("customer-invoices/cards/onboard/complete")]
        public async Task<ActionResult<ApiResponse<CardOnboardingStatusResult>>> CompleteCardOnboarding([FromQuery] string sessionId)
            => Response(await _clientPaymentMethodService.CompleteCardOnboardingAsync(HttpContext, sessionId));

        [CustomMiddleware]
        [RequiresPermission("billing")]
        [HttpGet("customer-invoices/cards")]
        public async Task<ActionResult<ApiResponse<List<ClientCardDto>>>> ListCards()
            => Response(await _clientPaymentMethodService.ListCardsAsync(HttpContext));

        [CustomMiddleware]
        [RequiresPermission("billing")]
        [HttpDelete("customer-invoices/cards/{cardToken}")]
        public async Task<ActionResult<ApiResponse<object>>> RemoveCard(string cardToken)
        {
            await _clientPaymentMethodService.RemoveCardAsync(HttpContext, cardToken);
            return Response<object>(new { removed = true });
        }

        [CustomMiddleware]
        [RequiresPermission("billing")]
        [HttpPatch("customer-invoices/cards/{cardToken}/default")]
        public async Task<ActionResult<ApiResponse<ClientCardDto>>> SetDefaultCard(string cardToken)
            => Response(await _clientPaymentMethodService.SetDefaultCardAsync(HttpContext, cardToken));

        [CustomMiddleware]
        [RequiresPermission("billing")]
        [HttpGet("customer-invoices/transactions")]
        public async Task<ActionResult<ApiResponse<TransactionHistoryResult>>> GetTransactionHistory(
            [FromQuery] int page = 1,
            [FromQuery] int pageSize = 20)
            => Response(await _clientPaymentMethodService.GetTransactionHistoryAsync(HttpContext, page, pageSize));

        public class PayPlatformInvoiceRequest
        {
            public decimal PayAmount { get; set; }
            public string? CardId { get; set; }
            public string? PayNote { get; set; }
        }
    }
}