using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WIDESEA_Core;
using WIDESEA_Core.BaseRepository;
using WIDESEA_Core.BaseServices;
using WIDESEA_DTO.BasicInfo;
using WIDESEA_IBasicInfoServices;
using WIDESEA_Model.Models;

namespace WIDESEA_BasicInfoServices
{
    public class ProductsService : ServiceBase<Dt_Products, IRepository<Dt_Products>>, IProductsService
    {
        private readonly IRepository<Dt_RuntimeCode> _runtimeCodeRepository;
        private readonly IRepository<Dt_ActivationCode> _activationCodeRepository;
        private readonly IActivationCodeService _activationCodeService;

        public ProductsService(IRepository<Dt_Products> BaseDal, IRepository<Dt_RuntimeCode> runtimeCodeRepository, IRepository<Dt_ActivationCode> activationCodeRepository, IActivationCodeService activationCodeService) : base(BaseDal)
        {
            _runtimeCodeRepository = runtimeCodeRepository;
            _activationCodeRepository = activationCodeRepository;
            _activationCodeService = activationCodeService;
        }

        /// <summary>
        /// 验证产品激活信息
        /// </summary>
        /// <param name="activationModel">包含产品激活所需信息的DTO对象，包括产品名称、运行码、激活码和设备ID</param>
        /// <returns>返回一个WebResponseContent对象，包含验证结果信息：
        /// - 成功时返回OK状态
        /// - 失败时返回具体的错误信息，如"无效的运行码"、"无效的激活码"、"激活码已过期"或"激活码验证失败"</returns>
        /// <remarks>
        /// 验证流程：
        /// 1. 根据产品名称获取产品ID
        /// 2. 验证运行码是否存在且匹配
        /// 3. 验证激活码是否存在且匹配
        /// 4. 检查激活码是否过期
        /// 5. 重新生成激活码进行验证
        /// 6. 更新激活状态为已使用
        /// </remarks>
        public WebResponseContent ValidateActivation(ActivationDTO activationModel)
        {
            int productId = -1;
            Dt_Products product = BaseDal.QueryFirst(x => x.ProductName == activationModel.ProductName);
            if (product != null)
            {
                productId = product.Id;
            }

            // 获取运行码记录
            Dt_RuntimeCode runtimeCode = _runtimeCodeRepository.QueryFirst(rc => rc.RuntimeCode == activationModel.RuntimeCode && rc.DeviceId == activationModel.DeviceId && rc.ProductId == productId);

            if (runtimeCode == null)
                return WebResponseContent.Instance.Error("无效的运行码");

            // 获取对应的激活码
            Dt_ActivationCode activation = _activationCodeRepository.QueryFirst(ac => ac.ActivationCode == activationModel.ActivationCode && ac.RuntimeCode == activationModel.RuntimeCode && ac.DeviceId == activationModel.DeviceId && ac.ProductId == productId);

            if (activation == null)
                return WebResponseContent.Instance.Error("无效的激活码");

            if (activation.ExpiresTime != null && activation.ExpiresTime < DateTime.Now)
                return WebResponseContent.Instance.Error("激活码已过期");

            ActivationCodeDTO activationCodeDTO = new ActivationCodeDTO
            {
                RuntimeCode = runtimeCode.RuntimeCode,
                DeviceId = activation.DeviceId,
                ProductName = activationModel.ProductName
            };

            // 重新生成映射进行验证
            string regenerated = _activationCodeService.GenerateActivationCode(activationCodeDTO);
            if (regenerated != activationModel.ActivationCode)
                return WebResponseContent.Instance.Error("激活码验证失败");

            // 更新激活状态
            activation.IsUsed = true;
            activation.UsedTime = DateTime.Now;
            _activationCodeRepository.UpdateData(activation);

            return WebResponseContent.Instance.OK();
        }

        /// <summary>
        /// 获取设备激活信息
        /// </summary>
        /// <param name="deviceId">设备ID</param>
        /// <param name="productName">产品名称</param>
        /// <returns>
        /// 返回WebResponseContent对象，包含以下情况：
        /// 1. 产品不存在时返回错误
        /// 2. 运行码不存在时返回错误
        /// 3. 激活码不存在时返回运行码、空激活码和未激活状态
        /// 4. 激活码已使用时返回运行码、激活码和已激活状态
        /// 5. 激活码未使用时返回运行码、激活码和未激活状态
        /// 6. 发生异常时返回错误信息
        /// </returns>
        public WebResponseContent GetActivationInfo(string deviceId, string productName)
        {
            try
            {
                Dt_Products product = BaseDal.QueryFirst(x => x.ProductName == productName);
                if (product == null)
                {
                    return WebResponseContent.Instance.Error();
                }

                Dt_RuntimeCode runtimeCode = _runtimeCodeRepository.QueryFirst(x => x.DeviceId == deviceId && x.ProductId == product.Id);
                if (runtimeCode == null)
                {
                    return WebResponseContent.Instance.Error();
                }

                Dt_ActivationCode activationCode = _activationCodeRepository.QueryFirst(x => x.RuntimeCode == runtimeCode.RuntimeCode && x.ProductId == product.Id && x.DeviceId == deviceId);
                if (activationCode == null)
                {
                    return WebResponseContent.Instance.OK(data: new { runtimeCode.RuntimeCode, ActivationCode = "", IsActivated = false });
                }

                if (activationCode.IsUsed && activationCode.UsedTime != null)
                {
                    return WebResponseContent.Instance.OK(data: new { runtimeCode.RuntimeCode, activationCode.ActivationCode, IsActivated = true });
                }

                return WebResponseContent.Instance.OK(data: new { runtimeCode.RuntimeCode, activationCode.ActivationCode, IsActivated = false });
            }
            catch (Exception ex)
            {
                return WebResponseContent.Instance.Error(message: "获取激活码信息失败");
            }
        }
    }
}