package api

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"time"
	"tyapi-server/internal/application/api/commands"
	"tyapi-server/internal/application/api/dto"
	"tyapi-server/internal/application/api/utils"
	"tyapi-server/internal/config"
	entities "tyapi-server/internal/domains/api/entities"

	"tyapi-server/internal/domains/api/repositories"
	"tyapi-server/internal/domains/api/services"
	"tyapi-server/internal/domains/api/services/processors"
	finance_services "tyapi-server/internal/domains/finance/services"
	product_entities "tyapi-server/internal/domains/product/entities"
	product_services "tyapi-server/internal/domains/product/services"
	user_repositories "tyapi-server/internal/domains/user/repositories"
	task_entities "tyapi-server/internal/infrastructure/task/entities"
	"tyapi-server/internal/infrastructure/task/interfaces"
	"tyapi-server/internal/shared/crypto"
	"tyapi-server/internal/shared/database"
	"tyapi-server/internal/shared/export"
	shared_interfaces "tyapi-server/internal/shared/interfaces"

	"github.com/shopspring/decimal"
	"go.uber.org/zap"
)

type ApiApplicationService interface {
	CallApi(ctx context.Context, cmd *commands.ApiCallCommand) (string, string, error)

	// 获取用户API密钥
	GetUserApiKeys(ctx context.Context, userID string) (*dto.ApiKeysResponse, error)

	// 用户白名单管理
	GetUserWhiteList(ctx context.Context, userID string) (*dto.WhiteListListResponse, error)
	AddWhiteListIP(ctx context.Context, userID string, ipAddress string) error
	DeleteWhiteListIP(ctx context.Context, userID string, ipAddress string) error

	// 获取用户API调用记录
	GetUserApiCalls(ctx context.Context, userID string, filters map[string]interface{}, options shared_interfaces.ListOptions) (*dto.ApiCallListResponse, error)

	// 管理端API调用记录
	GetAdminApiCalls(ctx context.Context, filters map[string]interface{}, options shared_interfaces.ListOptions) (*dto.ApiCallListResponse, error)
	
	// 导出功能
	ExportAdminApiCalls(ctx context.Context, filters map[string]interface{}, format string) ([]byte, error)

	// 加密参数接口
	EncryptParams(ctx context.Context, userID string, cmd *commands.EncryptCommand) (string, error)

	// 解密参数接口
	DecryptParams(ctx context.Context, userID string, cmd *commands.DecryptCommand) (map[string]interface{}, error)

	// 获取表单配置
	GetFormConfig(ctx context.Context, apiCode string) (*dto.FormConfigResponse, error)

	// 异步任务处理接口
	SaveApiCall(ctx context.Context, cmd *commands.SaveApiCallCommand) error
	ProcessDeduction(ctx context.Context, cmd *commands.ProcessDeductionCommand) error
	UpdateUsageStats(ctx context.Context, cmd *commands.UpdateUsageStatsCommand) error
	RecordApiLog(ctx context.Context, cmd *commands.RecordApiLogCommand) error
	ProcessCompensation(ctx context.Context, cmd *commands.ProcessCompensationCommand) error

	// 余额预警设置
	GetUserBalanceAlertSettings(ctx context.Context, userID string) (map[string]interface{}, error)
	UpdateUserBalanceAlertSettings(ctx context.Context, userID string, enabled bool, threshold float64, alertPhone string) error
	TestBalanceAlertSms(ctx context.Context, userID string, phone string, balance float64, alertType string) error
}

type ApiApplicationServiceImpl struct {
	apiCallService           services.ApiCallAggregateService
	apiUserService           services.ApiUserAggregateService
	apiRequestService        *services.ApiRequestService
	formConfigService        services.FormConfigService
	apiCallRepository        repositories.ApiCallRepository
	contractInfoService      user_repositories.ContractInfoRepository
	productManagementService *product_services.ProductManagementService
	userRepo                 user_repositories.UserRepository
	txManager                *database.TransactionManager
	config                   *config.Config
	logger                   *zap.Logger
	taskManager              interfaces.TaskManager
	exportManager            *export.ExportManager

	// 其他域的服务
	walletService       finance_services.WalletAggregateService
	subscriptionService *product_services.ProductSubscriptionService
	balanceAlertService finance_services.BalanceAlertService
}

func NewApiApplicationService(
	apiCallService services.ApiCallAggregateService,
	apiUserService services.ApiUserAggregateService,
	apiRequestService *services.ApiRequestService,
	formConfigService services.FormConfigService,
	apiCallRepository repositories.ApiCallRepository,
	productManagementService *product_services.ProductManagementService,
	userRepo user_repositories.UserRepository,
	txManager *database.TransactionManager,
	config *config.Config,
	logger *zap.Logger,
	contractInfoService user_repositories.ContractInfoRepository,
	taskManager interfaces.TaskManager,
	walletService finance_services.WalletAggregateService,
	subscriptionService *product_services.ProductSubscriptionService,
	exportManager *export.ExportManager,
	balanceAlertService finance_services.BalanceAlertService,
) ApiApplicationService {
	service := &ApiApplicationServiceImpl{
		apiCallService:           apiCallService,
		apiUserService:           apiUserService,
		apiRequestService:        apiRequestService,
		formConfigService:        formConfigService,
		apiCallRepository:        apiCallRepository,
		productManagementService: productManagementService,
		userRepo:                 userRepo,
		txManager:                txManager,
		config:                   config,
		logger:                   logger,
		contractInfoService:      contractInfoService,
		taskManager:              taskManager,
		exportManager:            exportManager,
		walletService:            walletService,
		subscriptionService:      subscriptionService,
		balanceAlertService:      balanceAlertService,
	}

	return service
}

// CallApi 优化后的应用服务层统一入口
func (s *ApiApplicationServiceImpl) CallApi(ctx context.Context, cmd *commands.ApiCallCommand) (string, string, error) {
	// ==================== 第一阶段：同步关键验证 ====================

	// 1. 创建ApiCall（内存中，不保存）
	apiCall, err := entities.NewApiCall(cmd.AccessId, cmd.Data, cmd.ClientIP)
	if err != nil {
		s.logger.Error("创建ApiCall失败", zap.Error(err))
		return "", "", ErrSystem
	}
	transactionId := apiCall.TransactionId

	// 2. 同步验证用户和产品（关键路径）
	validationResult, err := s.validateApiCall(ctx, cmd, apiCall)
	if err != nil {
		// 异步记录失败状态
		go s.asyncRecordFailure(context.Background(), apiCall, err)
		return "", "", err
	}

	// 3. 同步调用外部API（核心业务）
	response, err := s.callExternalApi(ctx, cmd, validationResult)
	if err != nil {
		// 异步记录失败状态
		go s.asyncRecordFailure(context.Background(), apiCall, err)
		return "", "", err
	}

	// 4. 同步加密响应
	encryptedResponse, err := crypto.AesEncrypt([]byte(response), validationResult.GetSecretKey())
	if err != nil {
		s.logger.Error("加密响应失败", zap.Error(err))
		go s.asyncRecordFailure(context.Background(), apiCall, err)
		return "", "", ErrSystem
	}

	// ==================== 第二阶段：异步处理非关键操作 ====================

	// 5. 异步保存API调用记录
	go s.asyncSaveApiCall(context.Background(), apiCall, validationResult, response)

	// 6. 异步扣款处理
	go s.asyncProcessDeduction(context.Background(), apiCall, validationResult)

	// 7. 异步更新使用统计
	// go s.asyncUpdateUsageStats(context.Background(), validationResult)

	// ==================== 第三阶段：立即返回结果 ====================

	s.logger.Info("API调用成功，异步处理后续操作",
		zap.String("transaction_id", transactionId),
		zap.String("user_id", validationResult.GetUserID()),
		zap.String("api_name", cmd.ApiName))

	return transactionId, string(encryptedResponse), nil
}

// validateApiCall 同步验证用户和产品信息
func (s *ApiApplicationServiceImpl) validateApiCall(ctx context.Context, cmd *commands.ApiCallCommand, apiCall *entities.ApiCall) (*dto.ApiCallValidationResult, error) {
	result := dto.NewApiCallValidationResult()

	// 1. 验证ApiUser
	apiUser, err := s.apiUserService.LoadApiUserByAccessId(ctx, cmd.AccessId)
	if err != nil {
		s.logger.Error("查ApiUser失败", zap.Error(err))
		return nil, ErrInvalidAccessId
	}
	result.SetApiUser(apiUser)

	// 2. 验证产品
	product, err := s.productManagementService.GetProductByCode(ctx, cmd.ApiName)
	if err != nil {
		s.logger.Error("查产品失败", zap.Error(err))
		return nil, ErrProductNotFound
	}
	result.SetProduct(product)

	// 3. 验证用户状态
	if apiUser.IsFrozen() {
		s.logger.Error("账户已冻结", zap.String("userId", apiUser.UserId))
		return nil, ErrFrozenAccount
	}

	// 4. 验证IP白名单（非开发环境）
	if !s.config.App.IsDevelopment() && !cmd.Options.IsDebug {
		if !apiUser.IsWhiteListed(cmd.ClientIP) {
			s.logger.Error("IP不在白名单内", zap.String("userId", apiUser.UserId), zap.String("ip", cmd.ClientIP))
			return nil, ErrInvalidIP
		}
	}

	// 5. 验证钱包状态
	if err := s.validateWalletStatus(ctx, apiUser.UserId, product); err != nil {
		return nil, err
	}

	// 6. 验证订阅状态并获取订阅信息
	subscription, err := s.validateSubscriptionStatus(ctx, apiUser.UserId, product)
	if err != nil {
		return nil, err
	}
	result.SetSubscription(subscription)

	// 7. 解密参数
	requestParams, err := crypto.AesDecrypt(cmd.Data, apiUser.SecretKey)
	if err != nil {
		s.logger.Error("解密参数失败", zap.Error(err))
		return nil, ErrDecryptFail
	}

	// 将解密后的字节数组转换为map
	var paramsMap map[string]interface{}
	if err := json.Unmarshal(requestParams, &paramsMap); err != nil {
		s.logger.Error("解析解密参数失败", zap.Error(err))
		return nil, ErrDecryptFail
	}
	result.SetRequestParams(paramsMap)

	// 8. 获取合同信息
	contractInfo, err := s.contractInfoService.FindByUserID(ctx, apiUser.UserId)
	if err == nil && len(contractInfo) > 0 {
		result.SetContractCode(contractInfo[0].ContractCode)
	}

	// 更新ApiCall信息
	apiCall.ProductId = &product.ID
	apiCall.UserId = &apiUser.UserId
	result.SetApiCall(apiCall)

	return result, nil
}

// callExternalApi 同步调用外部API
func (s *ApiApplicationServiceImpl) callExternalApi(ctx context.Context, cmd *commands.ApiCallCommand, validation *dto.ApiCallValidationResult) (string, error) {
	// 创建CallContext
	callContext := &processors.CallContext{
		ContractCode: validation.ContractCode,
	}

	// 将transactionId放入ctx中
	ctxWithTransactionId := context.WithValue(ctx, "transaction_id", validation.ApiCall.TransactionId)

	// 将map转换为字节数组
	requestParamsBytes, err := json.Marshal(validation.RequestParams)
	if err != nil {
		s.logger.Error("序列化请求参数失败", zap.Error(err))
		return "", ErrSystem
	}

	// 调用外部API
	response, err := s.apiRequestService.PreprocessRequestApi(
		ctxWithTransactionId,
		cmd.ApiName,
		requestParamsBytes,
		&cmd.Options,
		callContext)

	if err != nil {
		if errors.Is(err, processors.ErrDatasource) {
			return "", ErrSystem
		} else if errors.Is(err, processors.ErrInvalidParam) {
			return "", ErrInvalidParam
		} else if errors.Is(err, processors.ErrNotFound) {
			return "", ErrQueryEmpty
		} else {
			return "", ErrSystem
		}
	}

	return string(response), nil
}

// asyncSaveApiCall 异步保存API调用记录
func (s *ApiApplicationServiceImpl) asyncSaveApiCall(ctx context.Context, apiCall *entities.ApiCall, validation *dto.ApiCallValidationResult, response string) {
	// 标记为成功
	apiCall.MarkSuccess(validation.GetAmount())

	// 检查TransactionID是否已存在，避免重复创建
	existingCall, err := s.apiCallRepository.FindByTransactionId(ctx, apiCall.TransactionId)
	if err == nil && existingCall != nil {
		s.logger.Warn("API调用记录已存在，跳过创建",
			zap.String("transaction_id", apiCall.TransactionId),
			zap.String("user_id", validation.GetUserID()))
		return // 静默返回，不报错
	}

	// 直接保存到数据库
	if err := s.apiCallRepository.Create(ctx, apiCall); err != nil {
		s.logger.Error("异步保存API调用记录失败", zap.Error(err))
		return
	}

	// 创建任务工厂
	taskFactory := task_entities.NewTaskFactoryWithManager(s.taskManager)

	// 创建并异步入队API调用日志任务
	if err := taskFactory.CreateAndEnqueueApiLogTask(
		ctx,
		apiCall.TransactionId,
		validation.GetUserID(),
		validation.Product.Code,
		validation.Product.Code,
	); err != nil {
		s.logger.Error("创建并入队API日志任务失败", zap.Error(err))
	}
}

// asyncProcessDeduction 异步扣款处理
func (s *ApiApplicationServiceImpl) asyncProcessDeduction(ctx context.Context, apiCall *entities.ApiCall, validation *dto.ApiCallValidationResult) {
	// 创建任务工厂
	taskFactory := task_entities.NewTaskFactoryWithManager(s.taskManager)

	// 为扣款任务生成独立的TransactionID，避免与API调用的TransactionID冲突
	deductionTransactionID := entities.GenerateTransactionID()

	// 创建并异步入队扣款任务
	if err := taskFactory.CreateAndEnqueueDeductionTask(
		ctx,
		apiCall.ID,
		validation.GetUserID(),
		validation.GetProductID(),
		validation.GetAmount().String(),
		deductionTransactionID, // 使用独立的TransactionID
	); err != nil {
		s.logger.Error("创建并入队扣款任务失败", zap.Error(err))
	}
}

// asyncUpdateUsageStats 异步更新使用统计
func (s *ApiApplicationServiceImpl) asyncUpdateUsageStats(ctx context.Context, validation *dto.ApiCallValidationResult) {
	// 创建任务工厂
	taskFactory := task_entities.NewTaskFactoryWithManager(s.taskManager)

	// 创建并异步入队使用统计任务
	if err := taskFactory.CreateAndEnqueueUsageStatsTask(
		ctx,
		validation.GetSubscriptionID(),
		validation.GetUserID(),
		validation.GetProductID(),
		1,
	); err != nil {
		s.logger.Error("创建并入队使用统计任务失败", zap.Error(err))
	}
}

// asyncRecordFailure 异步记录失败状态
func (s *ApiApplicationServiceImpl) asyncRecordFailure(ctx context.Context, apiCall *entities.ApiCall, err error) {
	// 根据错误类型标记失败状态
	var errorType string
	var errorMsg string

	switch {
	case errors.Is(err, ErrInvalidAccessId):
		errorType = entities.ApiCallErrorInvalidAccess
		errorMsg = err.Error()
	case errors.Is(err, ErrFrozenAccount):
		errorType = entities.ApiCallErrorFrozenAccount
	case errors.Is(err, ErrInvalidIP):
		errorType = entities.ApiCallErrorInvalidIP
	case errors.Is(err, ErrArrears):
		errorType = entities.ApiCallErrorArrears
	case errors.Is(err, ErrInsufficientBalance):
		errorType = entities.ApiCallErrorArrears
	case errors.Is(err, ErrProductNotFound):
		errorType = entities.ApiCallErrorProductNotFound
		errorMsg = err.Error()
	case errors.Is(err, ErrProductDisabled):
		errorType = entities.ApiCallErrorProductDisabled
	case errors.Is(err, ErrNotSubscribed):
		errorType = entities.ApiCallErrorNotSubscribed
	case errors.Is(err, ErrProductNotSubscribed):
		errorType = entities.ApiCallErrorNotSubscribed
	case errors.Is(err, ErrSubscriptionExpired):
		errorType = entities.ApiCallErrorNotSubscribed
	case errors.Is(err, ErrSubscriptionSuspended):
		errorType = entities.ApiCallErrorNotSubscribed
	case errors.Is(err, ErrDecryptFail):
		errorType = entities.ApiCallErrorDecryptFail
		errorMsg = err.Error()
	case errors.Is(err, ErrInvalidParam):
		errorType = entities.ApiCallErrorInvalidParam
		errorMsg = err.Error()
	case errors.Is(err, ErrQueryEmpty):
		errorType = entities.ApiCallErrorQueryEmpty
	default:
		errorType = entities.ApiCallErrorSystem
		errorMsg = err.Error()
	}

	apiCall.MarkFailed(errorType, errorMsg)

	// 失败请求不创建任务，只记录日志
	s.logger.Info("API调用失败，记录失败状态",
		zap.String("transaction_id", apiCall.TransactionId),
		zap.String("error_type", errorType),
		zap.String("error_msg", errorMsg))
		
	// 可选：如果需要统计失败请求，可以在这里添加计数器
	// s.failureCounter.Inc()
}

// GetUserApiKeys 获取用户API密钥
func (s *ApiApplicationServiceImpl) GetUserApiKeys(ctx context.Context, userID string) (*dto.ApiKeysResponse, error) {
	apiUser, err := s.apiUserService.LoadApiUserByUserId(ctx, userID)
	if err != nil {
		return nil, err
	}

	return &dto.ApiKeysResponse{
		ID:        apiUser.ID,
		UserID:    apiUser.UserId,
		AccessID:  apiUser.AccessId,
		SecretKey: apiUser.SecretKey,
		Status:    apiUser.Status,
		CreatedAt: apiUser.CreatedAt,
		UpdatedAt: apiUser.UpdatedAt,
	}, nil
}

// GetUserWhiteList 获取用户白名单列表
func (s *ApiApplicationServiceImpl) GetUserWhiteList(ctx context.Context, userID string) (*dto.WhiteListListResponse, error) {
	apiUser, err := s.apiUserService.LoadApiUserByUserId(ctx, userID)
	if err != nil {
		return nil, err
	}

	// 确保WhiteList不为nil
	if apiUser.WhiteList == nil {
		apiUser.WhiteList = []string{}
	}

	// 将白名单字符串数组转换为响应格式
	var items []dto.WhiteListResponse
	for _, ip := range apiUser.WhiteList {
		items = append(items, dto.WhiteListResponse{
			ID:        apiUser.ID, // 使用API用户ID作为标识
			UserID:    apiUser.UserId,
			IPAddress: ip,
			CreatedAt: apiUser.CreatedAt, // 使用API用户创建时间
		})
	}

	return &dto.WhiteListListResponse{
		Items: items,
		Total: len(items),
	}, nil
}

// AddWhiteListIP 添加白名单IP
func (s *ApiApplicationServiceImpl) AddWhiteListIP(ctx context.Context, userID string, ipAddress string) error {
	apiUser, err := s.apiUserService.LoadApiUserByUserId(ctx, userID)
	if err != nil {
		return err
	}

	// 确保WhiteList不为nil
	if apiUser.WhiteList == nil {
		apiUser.WhiteList = []string{}
	}

	// 使用实体的领域方法添加IP到白名单
	err = apiUser.AddToWhiteList(ipAddress)
	if err != nil {
		return err
	}

	// 保存更新
	err = s.apiUserService.SaveApiUser(ctx, apiUser)
	if err != nil {
		return err
	}

	return nil
}

// DeleteWhiteListIP 删除白名单IP
func (s *ApiApplicationServiceImpl) DeleteWhiteListIP(ctx context.Context, userID string, ipAddress string) error {
	apiUser, err := s.apiUserService.LoadApiUserByUserId(ctx, userID)
	if err != nil {
		return err
	}

	// 确保WhiteList不为nil
	if apiUser.WhiteList == nil {
		apiUser.WhiteList = []string{}
	}

	// 使用实体的领域方法删除IP
	err = apiUser.RemoveFromWhiteList(ipAddress)
	if err != nil {
		return err
	}

	// 保存更新
	err = s.apiUserService.SaveApiUser(ctx, apiUser)
	if err != nil {
		return err
	}

	return nil
}

// GetUserApiCalls 获取用户API调用记录
func (s *ApiApplicationServiceImpl) GetUserApiCalls(ctx context.Context, userID string, filters map[string]interface{}, options shared_interfaces.ListOptions) (*dto.ApiCallListResponse, error) {
	// 查询API调用记录（包含产品名称）
	productNameMap, calls, total, err := s.apiCallRepository.ListByUserIdWithFiltersAndProductName(ctx, userID, filters, options)
	if err != nil {
		s.logger.Error("查询API调用记录失败", zap.Error(err), zap.String("userID", userID))
		return nil, err
	}

	// 转换为响应DTO
	var items []dto.ApiCallRecordResponse
	for _, call := range calls {
		item := dto.ApiCallRecordResponse{
			ID:            call.ID,
			AccessId:      call.AccessId,
			UserId:        *call.UserId,
			TransactionId: call.TransactionId,
			ClientIp:      call.ClientIp,
			Status:        call.Status,
			StartAt:       call.StartAt.Format("2006-01-02 15:04:05"),
			CreatedAt:     call.CreatedAt.Format("2006-01-02 15:04:05"),
			UpdatedAt:     call.UpdatedAt.Format("2006-01-02 15:04:05"),
		}

		// 处理可选字段
		if call.ProductId != nil {
			item.ProductId = call.ProductId
		}
		// 从映射中获取产品名称
		if productName, exists := productNameMap[call.ID]; exists {
			item.ProductName = &productName
		}
		if call.EndAt != nil {
			endAt := call.EndAt.Format("2006-01-02 15:04:05")
			item.EndAt = &endAt
		}
		if call.Cost != nil {
			cost := call.Cost.String()
			item.Cost = &cost
		}
		if call.ErrorType != nil {
			item.ErrorType = call.ErrorType
		}
		if call.ErrorMsg != nil {
			item.ErrorMsg = call.ErrorMsg
			// 添加翻译后的错误信息
			item.TranslatedErrorMsg = utils.TranslateErrorMsg(call.ErrorType, call.ErrorMsg)
		}

		items = append(items, item)
	}

	return &dto.ApiCallListResponse{
		Items: items,
		Total: total,
		Page:  options.Page,
		Size:  options.PageSize,
	}, nil
}

// GetAdminApiCalls 获取管理端API调用记录
func (s *ApiApplicationServiceImpl) GetAdminApiCalls(ctx context.Context, filters map[string]interface{}, options shared_interfaces.ListOptions) (*dto.ApiCallListResponse, error) {
	// 查询API调用记录（包含产品名称）
	productNameMap, calls, total, err := s.apiCallRepository.ListWithFiltersAndProductName(ctx, filters, options)
	if err != nil {
		s.logger.Error("查询API调用记录失败", zap.Error(err))
		return nil, err
	}

	// 转换为响应DTO
	var items []dto.ApiCallRecordResponse
	for _, call := range calls {
		// 基础字段安全检查
		if call.ID == "" {
			s.logger.Warn("跳过无效的API调用记录：ID为空")
			continue
		}

		item := dto.ApiCallRecordResponse{
			ID:            call.ID,
			AccessId:      call.AccessId,
			TransactionId: call.TransactionId,
			ClientIp:      call.ClientIp,
			Status:        call.Status,
		}

		// 安全设置用户ID
		if call.UserId != nil && *call.UserId != "" {
			item.UserId = *call.UserId
		} else {
			item.UserId = "未知用户"
		}

		// 安全设置时间字段
		if !call.StartAt.IsZero() {
			item.StartAt = call.StartAt.Format("2006-01-02 15:04:05")
		} else {
			item.StartAt = "未知时间"
		}

		if !call.CreatedAt.IsZero() {
			item.CreatedAt = call.CreatedAt.Format("2006-01-02 15:04:05")
		} else {
			item.CreatedAt = "未知时间"
		}

		if !call.UpdatedAt.IsZero() {
			item.UpdatedAt = call.UpdatedAt.Format("2006-01-02 15:04:05")
		} else {
			item.UpdatedAt = "未知时间"
		}

		// 处理可选字段
		if call.ProductId != nil && *call.ProductId != "" {
			item.ProductId = call.ProductId
		}

		// 从映射中获取产品名称
		if productName, exists := productNameMap[call.ID]; exists && productName != "" {
			item.ProductName = &productName
		}

		// 安全设置结束时间
		if call.EndAt != nil && !call.EndAt.IsZero() {
			endAt := call.EndAt.Format("2006-01-02 15:04:05")
			item.EndAt = &endAt
		}

		// 安全设置费用
		if call.Cost != nil {
			cost := call.Cost.String()
			if cost != "" {
				item.Cost = &cost
			}
		}

		// 安全设置错误类型
		if call.ErrorType != nil && *call.ErrorType != "" {
			item.ErrorType = call.ErrorType
		}

		// 安全设置错误信息
		if call.ErrorMsg != nil && *call.ErrorMsg != "" {
			item.ErrorMsg = call.ErrorMsg
			// 添加翻译后的错误信息
			if call.ErrorType != nil && *call.ErrorType != "" {
				item.TranslatedErrorMsg = utils.TranslateErrorMsg(call.ErrorType, call.ErrorMsg)
			}
		}

		// 获取用户信息和企业名称（增强空指针防护）
		if call.UserId != nil && *call.UserId != "" {
			user, err := s.userRepo.GetByIDWithEnterpriseInfo(ctx, *call.UserId)
			if err == nil && user.ID != "" {
				companyName := "未知企业"

				// 安全获取企业名称
				if user.EnterpriseInfo != nil && user.EnterpriseInfo.CompanyName != "" {
					companyName = user.EnterpriseInfo.CompanyName
				}

				item.CompanyName = &companyName

				// 安全构建用户响应
				item.User = &dto.UserSimpleResponse{
					ID:          user.ID,
					CompanyName: companyName,
					Phone:       user.Phone,
				}

				// 验证用户数据的完整性
				if user.Phone == "" {
					s.logger.Warn("用户手机号为空",
						zap.String("user_id", user.ID),
						zap.String("call_id", call.ID))
					item.User.Phone = "未知手机号"
				}
			} else {
				// 用户查询失败或用户数据不完整时的处理
				if err != nil {
					s.logger.Warn("获取用户信息失败",
						zap.String("user_id", *call.UserId),
						zap.String("call_id", call.ID),
						zap.Error(err))
				} else if user.ID == "" {
					s.logger.Warn("用户ID为空",
						zap.String("call_user_id", *call.UserId),
						zap.String("call_id", call.ID))
				}

				// 设置默认值
				defaultCompanyName := "未知企业"
				item.CompanyName = &defaultCompanyName
				item.User = &dto.UserSimpleResponse{
					ID:          "未知用户",
					CompanyName: defaultCompanyName,
					Phone:       "未知手机号",
				}
			}
		} else {
			// 用户ID为空时的处理
			defaultCompanyName := "未知企业"
			item.CompanyName = &defaultCompanyName
			item.User = &dto.UserSimpleResponse{
				ID:          "未知用户",
				CompanyName: defaultCompanyName,
				Phone:       "未知手机号",
			}
		}

		items = append(items, item)
	}

	return &dto.ApiCallListResponse{
		Items: items,
		Total: total,
		Page:  options.Page,
		Size:  options.PageSize,
	}, nil
}

// ExportAdminApiCalls 导出管理端API调用记录
func (s *ApiApplicationServiceImpl) ExportAdminApiCalls(ctx context.Context, filters map[string]interface{}, format string) ([]byte, error) {
	const batchSize = 1000 // 每批处理1000条记录
	var allCalls []*entities.ApiCall
	var productNameMap map[string]string
	
	// 分批获取数据
	page := 1
	for {
		// 查询当前批次的数据
		batchProductNameMap, calls, _, err := s.apiCallRepository.ListWithFiltersAndProductName(ctx, filters, shared_interfaces.ListOptions{
			Page:     page,
			PageSize: batchSize,
			Sort:     "created_at",
			Order:    "desc",
		})
		if err != nil {
			s.logger.Error("查询导出API调用记录失败", zap.Error(err))
			return nil, err
		}

		// 合并产品名称映射
		if productNameMap == nil {
			productNameMap = batchProductNameMap
		} else {
			for k, v := range batchProductNameMap {
				productNameMap[k] = v
			}
		}

		// 添加到总数据中
		allCalls = append(allCalls, calls...)

		// 如果当前批次数据少于批次大小，说明已经是最后一批
		if len(calls) < batchSize {
			break
		}
		page++
	}

	// 批量获取企业名称映射，避免N+1查询问题
	companyNameMap, err := s.batchGetCompanyNamesForApiCalls(ctx, allCalls)
	if err != nil {
		s.logger.Warn("批量获取企业名称失败，使用默认值", zap.Error(err))
		companyNameMap = make(map[string]string)
	}

	// 准备导出数据
	headers := []string{"企业名称", "产品名称", "交易ID", "客户端IP", "状态", "开始时间", "结束时间"}
	columnWidths := []float64{30, 20, 40, 15, 10, 20, 20}
	
	data := make([][]interface{}, len(allCalls))
	for i, call := range allCalls {
		// 从映射中获取企业名称
		companyName := "未知企业"
		if call.UserId != nil {
			companyName = companyNameMap[*call.UserId]
			if companyName == "" {
				companyName = "未知企业"
			}
		}

		// 获取产品名称
		productName := "未知产品"
		if call.ID != "" {
			productName = productNameMap[call.ID]
			if productName == "" {
				productName = "未知产品"
			}
		}

		// 格式化时间
		startAt := call.StartAt.Format("2006-01-02 15:04:05")
		endAt := ""
		if call.EndAt != nil {
			endAt = call.EndAt.Format("2006-01-02 15:04:05")
		}

		data[i] = []interface{}{
			companyName,
			productName,
			call.TransactionId,
			call.ClientIp,
			call.Status,
			startAt,
			endAt,
		}
	}

	// 创建导出配置
	config := &export.ExportConfig{
		SheetName:    "API调用记录",
		Headers:      headers,
		Data:         data,
		ColumnWidths: columnWidths,
	}

	// 使用导出管理器生成文件
	return s.exportManager.Export(ctx, config, format)
}

// EncryptParams 加密参数
func (s *ApiApplicationServiceImpl) EncryptParams(ctx context.Context, userID string, cmd *commands.EncryptCommand) (string, error) {
	// 1. 将数据转换为JSON字节数组
	jsonData, err := json.Marshal(cmd.Data)
	if err != nil {
		s.logger.Error("序列化参数失败", zap.Error(err))
		return "", err
	}

	// 2. 使用前端传来的SecretKey进行加密
	encryptedData, err := crypto.AesEncrypt(jsonData, cmd.SecretKey)
	if err != nil {
		s.logger.Error("加密参数失败", zap.Error(err))
		return "", err
	}

	return encryptedData, nil
}

// DecryptParams 解密参数
func (s *ApiApplicationServiceImpl) DecryptParams(ctx context.Context, userID string, cmd *commands.DecryptCommand) (map[string]interface{}, error) {
	// 1. 使用前端传来的SecretKey进行解密
	decryptedData, err := crypto.AesDecrypt(cmd.EncryptedData, cmd.SecretKey)
	if err != nil {
		s.logger.Error("解密参数失败", zap.Error(err))
		return nil, err
	}

	// 2. 将解密后的JSON字节数组转换为map
	var result map[string]interface{}
	err = json.Unmarshal(decryptedData, &result)
	if err != nil {
		s.logger.Error("反序列化解密数据失败", zap.Error(err))
		return nil, err
	}

	return result, nil
}

// GetFormConfig 获取指定API的表单配置
func (s *ApiApplicationServiceImpl) GetFormConfig(ctx context.Context, apiCode string) (*dto.FormConfigResponse, error) {
	// 调用领域服务获取表单配置
	config, err := s.formConfigService.GetFormConfig(apiCode)
	if err != nil {
		s.logger.Error("获取表单配置失败", zap.String("api_code", apiCode), zap.Error(err))
		return nil, err
	}

	if config == nil {
		return nil, nil
	}

	// 转换为应用层DTO
	response := &dto.FormConfigResponse{
		ApiCode: config.ApiCode,
		Fields:  make([]dto.FormField, len(config.Fields)),
	}

	for i, field := range config.Fields {
		response.Fields[i] = dto.FormField{
			Name:        field.Name,
			Label:       field.Label,
			Type:        field.Type,
			Required:    field.Required,
			Validation:  field.Validation,
			Description: field.Description,
			Example:     field.Example,
			Placeholder: field.Placeholder,
		}
	}

	return response, nil
}

// ==================== 异步任务处理方法 ====================

// SaveApiCall 保存API调用记录
func (s *ApiApplicationServiceImpl) SaveApiCall(ctx context.Context, cmd *commands.SaveApiCallCommand) error {
	s.logger.Debug("开始保存API调用记录",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("user_id", cmd.UserID))

	// 创建ApiCall实体
	apiCall := &entities.ApiCall{
		ID:            cmd.ApiCallID,
		AccessId:      "", // SaveApiCallCommand中没有AccessID字段
		UserId:        &cmd.UserID,
		TransactionId: cmd.TransactionID,
		ClientIp:      cmd.ClientIP,
		Status:        cmd.Status,
		StartAt:       time.Now(),                                            // SaveApiCallCommand中没有StartAt字段
		EndAt:         nil,                                                   // SaveApiCallCommand中没有EndAt字段
		Cost:          &[]decimal.Decimal{decimal.NewFromFloat(cmd.Cost)}[0], // 转换float64为*decimal.Decimal
		ErrorType:     &cmd.ErrorType,                                        // 转换string为*string
		ErrorMsg:      &cmd.ErrorMsg,                                         // 转换string为*string
		CreatedAt:     time.Now(),
		UpdatedAt:     time.Now(),
	}

	// 保存到数据库
	if err := s.apiCallRepository.Create(ctx, apiCall); err != nil {
		s.logger.Error("保存API调用记录失败", zap.Error(err))
		return err
	}

	s.logger.Info("API调用记录保存成功",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("status", cmd.Status))

	return nil
}

// ProcessDeduction 处理扣款
func (s *ApiApplicationServiceImpl) ProcessDeduction(ctx context.Context, cmd *commands.ProcessDeductionCommand) error {
	s.logger.Debug("开始处理扣款",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("user_id", cmd.UserID),
		zap.String("amount", cmd.Amount))

	// 直接调用钱包服务进行扣款
	amount, err := decimal.NewFromString(cmd.Amount)
	if err != nil {
		s.logger.Error("金额格式错误", zap.Error(err))
		return err
	}

	if err := s.walletService.Deduct(ctx, cmd.UserID, amount, cmd.ApiCallID, cmd.TransactionID, cmd.ProductID); err != nil {
		s.logger.Error("扣款处理失败",
			zap.String("transaction_id", cmd.TransactionID),
			zap.Error(err))
		return err
	}

	s.logger.Info("扣款处理成功",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("user_id", cmd.UserID))

	return nil
}

// UpdateUsageStats 更新使用统计
func (s *ApiApplicationServiceImpl) UpdateUsageStats(ctx context.Context, cmd *commands.UpdateUsageStatsCommand) error {
	s.logger.Debug("开始更新使用统计",
		zap.String("subscription_id", cmd.SubscriptionID),
		zap.String("user_id", cmd.UserID),
		zap.Int("increment", cmd.Increment))

	// 直接调用订阅服务更新使用统计
	if err := s.subscriptionService.IncrementSubscriptionAPIUsage(ctx, cmd.SubscriptionID, int64(cmd.Increment)); err != nil {
		s.logger.Error("更新使用统计失败",
			zap.String("subscription_id", cmd.SubscriptionID),
			zap.Error(err))
		return err
	}

	s.logger.Info("使用统计更新成功",
		zap.String("subscription_id", cmd.SubscriptionID),
		zap.String("user_id", cmd.UserID))

	return nil
}

// RecordApiLog 记录API日志
func (s *ApiApplicationServiceImpl) RecordApiLog(ctx context.Context, cmd *commands.RecordApiLogCommand) error {
	s.logger.Debug("开始记录API日志",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("api_name", cmd.ApiName),
		zap.String("user_id", cmd.UserID))

	// 记录结构化日志
	s.logger.Info("API调用日志",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("user_id", cmd.UserID),
		zap.String("api_name", cmd.ApiName),
		zap.String("client_ip", cmd.ClientIP),
		zap.Int64("response_size", cmd.ResponseSize),
		zap.Time("timestamp", time.Now()))

	// 这里可以添加其他日志记录逻辑
	// 例如：写入专门的日志文件、发送到日志系统、写入数据库等

	s.logger.Info("API日志记录成功",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("api_name", cmd.ApiName),
		zap.String("user_id", cmd.UserID))

	return nil
}

// ProcessCompensation 处理补偿
func (s *ApiApplicationServiceImpl) ProcessCompensation(ctx context.Context, cmd *commands.ProcessCompensationCommand) error {
	s.logger.Debug("开始处理补偿",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("type", cmd.Type))

	// 根据补偿类型处理不同的补偿逻辑
	switch cmd.Type {
	case "refund":
		// 退款补偿 - ProcessCompensationCommand中没有Amount字段，暂时只记录日志
		s.logger.Info("退款补偿处理", zap.String("transaction_id", cmd.TransactionID))
	case "credit":
		// 积分补偿 - ProcessCompensationCommand中没有CreditAmount字段，暂时只记录日志
		s.logger.Info("积分补偿处理", zap.String("transaction_id", cmd.TransactionID))
	case "subscription_extension":
		// 订阅延期补偿 - ProcessCompensationCommand中没有ExtensionDays字段，暂时只记录日志
		s.logger.Info("订阅延期补偿处理", zap.String("transaction_id", cmd.TransactionID))
	default:
		s.logger.Warn("未知的补偿类型", zap.String("type", cmd.Type))
		return fmt.Errorf("未知的补偿类型: %s", cmd.Type)
	}

	s.logger.Info("补偿处理成功",
		zap.String("transaction_id", cmd.TransactionID),
		zap.String("type", cmd.Type))

	return nil
}

// validateWalletStatus 验证钱包状态
func (s *ApiApplicationServiceImpl) validateWalletStatus(ctx context.Context, userID string, product *product_entities.Product) error {
	// 1. 获取用户钱包信息
	wallet, err := s.walletService.LoadWalletByUserId(ctx, userID)
	if err != nil {
		s.logger.Error("获取钱包信息失败",
			zap.String("user_id", userID),
			zap.Error(err))
		return ErrSystem
	}

	// 2. 检查钱包是否激活
	if !wallet.IsActive {
		s.logger.Error("钱包未激活",
			zap.String("user_id", userID),
			zap.String("wallet_id", wallet.ID))
		return ErrFrozenAccount
	}

	// 3. 检查钱包余额是否充足
	requiredAmount := product.Price
	if wallet.Balance.LessThan(requiredAmount) {
		s.logger.Error("钱包余额不足",
			zap.String("user_id", userID),
			zap.String("balance", wallet.Balance.String()),
			zap.String("required_amount", requiredAmount.String()),
			zap.String("product_code", product.Code))
		return ErrInsufficientBalance
	}

	// 4. 检查是否欠费
	if wallet.IsArrears() {
		s.logger.Error("钱包存在欠费",
			zap.String("user_id", userID),
			zap.String("wallet_id", wallet.ID))
		return ErrFrozenAccount
	}

	s.logger.Info("钱包状态验证通过",
		zap.String("user_id", userID),
		zap.String("wallet_id", wallet.ID),
		zap.String("balance", wallet.Balance.String()))

	return nil
}

// validateSubscriptionStatus 验证订阅状态并返回订阅信息
func (s *ApiApplicationServiceImpl) validateSubscriptionStatus(ctx context.Context, userID string, product *product_entities.Product) (*product_entities.Subscription, error) {
	// 1. 检查用户是否已订阅该产品
	subscription, err := s.subscriptionService.UserSubscribedProductByCode(ctx, userID, product.Code)
	if err != nil {
		// 如果没有找到订阅记录，说明用户未订阅
		s.logger.Error("用户未订阅该产品",
			zap.String("user_id", userID),
			zap.String("product_code", product.Code),
			zap.Error(err))
		return nil, ErrProductNotSubscribed
	}

	// 2. 检查订阅是否有效（未删除）
	if !subscription.IsValid() {
		s.logger.Error("订阅已失效",
			zap.String("user_id", userID),
			zap.String("subscription_id", subscription.ID),
			zap.String("product_code", product.Code))
		return nil, ErrSubscriptionExpired
	}

	s.logger.Info("订阅状态验证通过",
		zap.String("user_id", userID),
		zap.String("subscription_id", subscription.ID),
		zap.String("product_code", product.Code),
		zap.String("subscription_price", subscription.Price.String()),
		zap.Int64("api_used", subscription.APIUsed))

	return subscription, nil
}

// batchGetCompanyNamesForApiCalls 批量获取企业名称映射（用于API调用记录）
func (s *ApiApplicationServiceImpl) batchGetCompanyNamesForApiCalls(ctx context.Context, calls []*entities.ApiCall) (map[string]string, error) {
	// 收集所有唯一的用户ID
	userIDSet := make(map[string]bool)
	for _, call := range calls {
		if call.UserId != nil && *call.UserId != "" {
			userIDSet[*call.UserId] = true
		}
	}

	// 转换为切片
	userIDs := make([]string, 0, len(userIDSet))
	for userID := range userIDSet {
		userIDs = append(userIDs, userID)
	}

	// 批量查询用户信息
	users, err := s.userRepo.BatchGetByIDsWithEnterpriseInfo(ctx, userIDs)
	if err != nil {
		return nil, err
	}

	// 构建企业名称映射
	companyNameMap := make(map[string]string)
	for _, user := range users {
		companyName := "未知企业"
		if user.EnterpriseInfo != nil {
			companyName = user.EnterpriseInfo.CompanyName
		}
		companyNameMap[user.ID] = companyName
	}

	return companyNameMap, nil
}

// GetUserBalanceAlertSettings 获取用户余额预警设置
func (s *ApiApplicationServiceImpl) GetUserBalanceAlertSettings(ctx context.Context, userID string) (map[string]interface{}, error) {
	// 获取API用户信息
	apiUser, err := s.apiUserService.LoadApiUserByUserId(ctx, userID)
	if err != nil {
		s.logger.Error("获取API用户信息失败", 
			zap.String("user_id", userID), 
			zap.Error(err))
		return nil, fmt.Errorf("获取API用户信息失败: %w", err)
	}

	if apiUser == nil {
		return nil, fmt.Errorf("API用户不存在")
	}

	// 返回预警设置
	settings := map[string]interface{}{
		"enabled":      apiUser.BalanceAlertEnabled,
		"threshold":    apiUser.BalanceAlertThreshold,
		"alert_phone":  apiUser.AlertPhone,
	}

	return settings, nil
}

// UpdateUserBalanceAlertSettings 更新用户余额预警设置
func (s *ApiApplicationServiceImpl) UpdateUserBalanceAlertSettings(ctx context.Context, userID string, enabled bool, threshold float64, alertPhone string) error {
	// 获取API用户信息
	apiUser, err := s.apiUserService.LoadApiUserByUserId(ctx, userID)
	if err != nil {
		s.logger.Error("获取API用户信息失败", 
			zap.String("user_id", userID), 
			zap.Error(err))
		return fmt.Errorf("获取API用户信息失败: %w", err)
	}

	if apiUser == nil {
		return fmt.Errorf("API用户不存在")
	}

	// 更新预警设置
	if err := apiUser.UpdateBalanceAlertSettings(enabled, threshold, alertPhone); err != nil {
		s.logger.Error("更新预警设置失败", 
			zap.String("user_id", userID), 
			zap.Error(err))
		return fmt.Errorf("更新预警设置失败: %w", err)
	}

	// 保存到数据库
	if err := s.apiUserService.SaveApiUser(ctx, apiUser); err != nil {
		s.logger.Error("保存API用户信息失败", 
			zap.String("user_id", userID), 
			zap.Error(err))
		return fmt.Errorf("保存API用户信息失败: %w", err)
	}

	s.logger.Info("用户余额预警设置更新成功",
		zap.String("user_id", userID),
		zap.Bool("enabled", enabled),
		zap.Float64("threshold", threshold),
		zap.String("alert_phone", alertPhone))

	return nil
}

// TestBalanceAlertSms 测试余额预警短信
func (s *ApiApplicationServiceImpl) TestBalanceAlertSms(ctx context.Context, userID string, phone string, balance float64, alertType string) error {
	// 获取用户信息以获取企业名称
	user, err := s.userRepo.GetByID(ctx, userID)
	if err != nil {
		s.logger.Error("获取用户信息失败", 
			zap.String("user_id", userID), 
			zap.Error(err))
		return fmt.Errorf("获取用户信息失败: %w", err)
	}

	// 获取企业名称
	enterpriseName := "天远数据用户"
	if user.EnterpriseInfo != nil && user.EnterpriseInfo.CompanyName != "" {
		enterpriseName = user.EnterpriseInfo.CompanyName
	}

	// 调用短信服务发送测试短信
	if err := s.balanceAlertService.CheckAndSendAlert(ctx, userID, decimal.NewFromFloat(balance)); err != nil {
		s.logger.Error("发送测试预警短信失败", 
			zap.String("user_id", userID), 
			zap.String("phone", phone),
			zap.Float64("balance", balance),
			zap.String("alert_type", alertType),
			zap.Error(err))
		return fmt.Errorf("发送测试短信失败: %w", err)
	}

	s.logger.Info("测试预警短信发送成功",
		zap.String("user_id", userID),
		zap.String("phone", phone),
		zap.Float64("balance", balance),
		zap.String("alert_type", alertType),
		zap.String("enterprise_name", enterpriseName))

	return nil
}