using CMSMicroservice.Protobuf.Protos.UserOrder;
using Grpc.Core;
using Google.Protobuf.WellKnownTypes;
using System.Collections.Generic;
using CMSMicroservice.Protobuf.Protos;

namespace CMSMicroservice.WebApi.Services;

public class UserOrderService : UserOrderContract.UserOrderContractBase
{
    public override async Task<CreateNewUserOrderResponse> CreateNewUserOrder(CreateNewUserOrderRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<Google.Protobuf.WellKnownTypes.Empty> UpdateUserOrder(UpdateUserOrderRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<Google.Protobuf.WellKnownTypes.Empty> DeleteUserOrder(DeleteUserOrderRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<GetUserOrderResponse> GetUserOrder(GetUserOrderRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<GetAllUserOrderByFilterResponse> GetAllUserOrderByFilter(GetAllUserOrderByFilterRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<SubmitShopBuyOrderResponse> SubmitShopBuyOrder(SubmitShopBuyOrderRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<CancelOrderResponse> CancelOrder(CancelOrderRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<UpdateOrderStatusResponse> UpdateOrderStatus(UpdateOrderStatusRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<GetOrdersByDateRangeResponse> GetOrdersByDateRange(GetOrdersByDateRangeRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<ApplyDiscountToOrderResponse> ApplyDiscountToOrder(ApplyDiscountToOrderRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    public override async Task<CalculateOrderPVResponse> CalculateOrderPV(CalculateOrderPVRequest request, ServerCallContext context)
    {
        throw new RpcException(new Status(StatusCode.Unimplemented, "Method not implemented yet"));
    }
    
    // ============= Customer-specific Methods =============
    
    public override async Task<CreateNewUserOrderResponse> CreateNewOrderForCustomer(CreateNewUserOrderRequest request, ServerCallContext context)
    {
        // For now, return empty response - will be implemented properly later
        return new CreateNewUserOrderResponse();
    }
    
    public override async Task<SubmitShopBuyOrderResponse> SubmitOrderForCustomer(SubmitShopBuyOrderRequest request, ServerCallContext context)
    {
        // For now, return empty response - will be implemented properly later
        return new SubmitShopBuyOrderResponse();
    }
    
    public override async Task<GetAllUserOrderByFilterResponse> GetCustomerOrders(GetAllUserOrderByFilterRequest request, ServerCallContext context)
    {
        // For now, return empty response - will be implemented properly later
        return new GetAllUserOrderByFilterResponse();
    }
    
    public override async Task<GetUserOrderResponse> GetCustomerOrder(GetUserOrderRequest request, ServerCallContext context)
    {
        // Mock Customer order details with correct property names
        return new GetUserOrderResponse
        {
            Id = request.Id,
            Amount = 250000,
            PackageId = 1,
            UserId = 1,
            PaymentStatus = PaymentStatus.Success,
            PaymentDate = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-2))
        };
    }
    
    // ============= Customer-specific Method Implementations =============
    
    public override async Task<CustomerCancelOrderResponse> CustomerCancelOrder(CustomerCancelOrderRequest request, ServerCallContext context)
    {
        // Mock Customer order cancellation with realistic Persian response
        return new CustomerCancelOrderResponse
        {
            Success = true,
            Message = "سفارش شما با موفقیت لغو شد",
            RefundAmount = 180000,
            RefundTransactionId = "REF" + DateTimeOffset.UtcNow.ToUnixTimeSeconds()
        };
    }
    
    public override async Task<GetCustomerOrderHistoryResponse> GetCustomerOrderHistory(GetCustomerOrderHistoryRequest request, ServerCallContext context)
    {
        // Mock Customer order history with realistic Persian data
        var orders = new List<CustomerOrderModel>
        {
            new CustomerOrderModel
            {
                Id = 1,
                Amount = 250000,
                PackageId = 1,
                PackageName = "پکیج اسپشیال",
                Status = OrderStatusEnum.OrderStatusDelivered,
                StatusMessage = "تحویل داده شد",
                OrderDate = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-10)),
                DeliveryDate = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-3)),
                TrackingCode = "TRK001",
                ItemsCount = 5,
                CanCancel = false,
                CanReorder = true
            },
            new CustomerOrderModel
            {
                Id = 2,
                Amount = 150000,
                PackageId = 2,
                PackageName = "پکیج عادی",
                Status = OrderStatusEnum.OrderStatusShipped,
                StatusMessage = "ارسال شده",
                OrderDate = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-3)),
                DeliveryDate = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(2)),
                TrackingCode = "TRK002",
                ItemsCount = 3,
                CanCancel = true,
                CanReorder = true
            }
        };
        
        return new GetCustomerOrderHistoryResponse
        {
            MetaData = new MetaData
            {
                CurrentPage = request.PaginationState?.PageNumber ?? 1,
                TotalPage = 1,
                PageSize = request.PaginationState?.PageSize ?? 10,
                TotalCount = orders.Count,
                HasPrevious = false,
                HasNext = false
            },
            Orders = { orders }
        };
    }
    
    public override async Task<CustomerTrackOrderResponse> CustomerTrackOrder(CustomerTrackOrderRequest request, ServerCallContext context)
    {
        // Mock Customer order tracking with detailed Persian information
        var statusHistory = new List<OrderStatusHistory>
        {
            new OrderStatusHistory
            {
                Status = OrderStatusEnum.OrderStatusPending,
                StatusMessage = "در انتظار تایید",
                ChangedAt = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-5)),
                ChangedBy = "سیستم"
            },
            new OrderStatusHistory
            {
                Status = OrderStatusEnum.OrderStatusConfirmed,
                StatusMessage = "تایید شده",
                ChangedAt = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-4)),
                ChangedBy = "کارشناس فروش"
            },
            new OrderStatusHistory
            {
                Status = OrderStatusEnum.OrderStatusProcessing,
                StatusMessage = "در حال آماده‌سازی",
                ChangedAt = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-3)),
                ChangedBy = "انبار"
            },
            new OrderStatusHistory
            {
                Status = OrderStatusEnum.OrderStatusShipped,
                StatusMessage = "ارسال شده",
                ChangedAt = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-2)),
                ChangedBy = "پست پیشتاز"
            }
        };
        
        var deliverySteps = new List<DeliveryStep>
        {
            new DeliveryStep
            {
                StepName = "دریافت از فروشنده",
                StepDescription = "بسته از فروشنده دریافت شد",
                StepTime = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-2)),
                IsCompleted = true
            },
            new DeliveryStep
            {
                StepName = "مرکز پردازش تهران",
                StepDescription = "بسته در مرکز پردازش تهران",
                StepTime = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-1)),
                IsCompleted = true
            },
            new DeliveryStep
            {
                StepName = "در حال ارسال",
                StepDescription = "بسته در حال ارسال به آدرس مقصد",
                StepTime = Timestamp.FromDateTime(DateTime.UtcNow.AddHours(-8)),
                IsCompleted = false
            }
        };
        
        return new CustomerTrackOrderResponse
        {
            Order = new CustomerOrderModel
            {
                Id = request.OrderId,
                Amount = 180000,
                PackageId = 1,
                PackageName = "پکیج ویژه",
                Status = OrderStatusEnum.OrderStatusShipped,
                StatusMessage = "در حال ارسال",
                OrderDate = Timestamp.FromDateTime(DateTime.UtcNow.AddDays(-5)),
                TrackingCode = "TRK" + request.OrderId.ToString("000"),
                ItemsCount = 4,
                CanCancel = false,
                CanReorder = true
            },
            StatusHistory = { statusHistory },
            DeliveryInfo = new DeliveryTrackingInfo
            {
                TrackingCode = "TRK" + request.OrderId.ToString("000"),
                CourierName = "پست پیشتاز",
                EstimatedDelivery = "فردا تا ساعت 18:00",
                CurrentLocation = "مرکز پخش منطقه 5 تهران",
                DeliverySteps = { deliverySteps }
            }
        };
    }
    
    public override async Task<CustomerReorderResponse> CustomerReorderPreviousOrder(CustomerReorderRequest request, ServerCallContext context)
    {
        // Mock Customer reorder functionality
        var newOrderId = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
        var totalAmount = request.UseCurrentPrices ? 280000 : 250000;
        
        return new CustomerReorderResponse
        {
            Success = true,
            Message = request.UseCurrentPrices ? 
                "سفارش مجدد با قیمت‌های جدید ثبت شد" : 
                "سفارش مجدد با قیمت‌های قبلی ثبت شد",
            NewOrderId = newOrderId,
            TotalAmount = totalAmount
        };
    }
}
