// Package account 提供账号管理的业务逻辑服务
// 包含账号创建、查询、更新、删除、密码管理等功能
package account

import (
	"context"
	stdErrors "errors"
	"fmt"
	"slices"
	"strconv"
	"strings"

	accessauditapp "github.com/break/junhong_cmp_fiber/internal/application/accessaudit"
	accountauditapp "github.com/break/junhong_cmp_fiber/internal/application/accountaudit"
	"github.com/break/junhong_cmp_fiber/internal/model"
	"github.com/break/junhong_cmp_fiber/internal/model/dto"
	"github.com/break/junhong_cmp_fiber/internal/store"
	"github.com/break/junhong_cmp_fiber/internal/store/postgres"
	"github.com/break/junhong_cmp_fiber/pkg/auditfailure"
	pkgAuth "github.com/break/junhong_cmp_fiber/pkg/auth"
	"github.com/break/junhong_cmp_fiber/pkg/constants"
	"github.com/break/junhong_cmp_fiber/pkg/errors"
	"github.com/break/junhong_cmp_fiber/pkg/logger"
	"github.com/break/junhong_cmp_fiber/pkg/middleware"
	"github.com/jackc/pgx/v5/pgconn"
	"github.com/redis/go-redis/v9"
	"go.uber.org/zap"
	"golang.org/x/crypto/bcrypt"
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
)

// ShopStoreInterface 店铺存储接口（仅用于获取店铺信息）
type ShopStoreInterface interface {
	GetByIDs(ctx context.Context, ids []uint) ([]*model.Shop, error)
}

// Service 账号业务服务
type Service struct {
	db               *gorm.DB
	lifecycleAudit   accountauditapp.Writer
	accessAudit      accessauditapp.Writer
	redisClient      *redis.Client
	accountStore     *postgres.AccountStore
	roleStore        *postgres.RoleStore
	accountRoleStore *postgres.AccountRoleStore
	shopRoleStore    *postgres.ShopRoleStore
	shopStore        ShopStoreInterface
	enterpriseStore  middleware.EnterpriseStoreInterface
	wecomMembers     WeComMemberFinder
	tokenManager     *pkgAuth.TokenManager
}

// SetLifecycleAudit 注入账号生命周期事务和统一审计边界。
func (s *Service) SetLifecycleAudit(db *gorm.DB, writer accountauditapp.Writer) {
	s.db = db
	s.lifecycleAudit = writer
}

// SetAccessAudit 注入账号角色授权的事务、缓存和统一审计边界。
func (s *Service) SetAccessAudit(db *gorm.DB, redisClient *redis.Client, writer accessauditapp.Writer) {
	s.db = db
	s.redisClient = redisClient
	s.accessAudit = writer
}

// SetTokenManager 注入改密后撤销现有会话所需的令牌管理器。
func (s *Service) SetTokenManager(tokenManager *pkgAuth.TokenManager) {
	s.tokenManager = tokenManager
}

// WeComMemberFinder 定义账号绑定时校验应用可见成员的边界。
type WeComMemberFinder interface {
	GetVisible(ctx context.Context, applicationID uint, userID string) (*model.WeComMember, error)
}

// New 创建账号服务
func New(
	accountStore *postgres.AccountStore,
	roleStore *postgres.RoleStore,
	accountRoleStore *postgres.AccountRoleStore,
	shopRoleStore *postgres.ShopRoleStore,
	shopStore ShopStoreInterface,
	enterpriseStore middleware.EnterpriseStoreInterface,
) *Service {
	return &Service{
		accountStore:     accountStore,
		roleStore:        roleStore,
		accountRoleStore: accountRoleStore,
		shopRoleStore:    shopRoleStore,
		shopStore:        shopStore,
		enterpriseStore:  enterpriseStore,
	}
}

// SetWeComMemberFinder 注入企业微信应用可见成员查询边界。
func (s *Service) SetWeComMemberFinder(finder WeComMemberFinder) {
	s.wecomMembers = finder
}

// Create 创建账号
func (s *Service) Create(ctx context.Context, req *dto.CreateAccountRequest) (*model.Account, error) {
	currentUserID := middleware.GetUserIDFromContext(ctx)
	if currentUserID == 0 {
		return nil, errors.New(errors.CodeUnauthorized, "未授权访问")
	}

	userType := middleware.GetUserTypeFromContext(ctx)

	if userType == constants.UserTypeEnterprise {
		return nil, errors.New(errors.CodeForbidden, "企业账号不允许创建账号")
	}

	if userType == constants.UserTypeAgent && req.UserType == constants.UserTypePlatform {
		return nil, errors.New(errors.CodeForbidden, "无权限创建平台账号")
	}

	if req.UserType == constants.UserTypeAgent && req.ShopID == nil {
		return nil, errors.New(errors.CodeInvalidParam, "代理账号必须提供店铺ID")
	}

	if req.UserType == constants.UserTypeEnterprise && req.EnterpriseID == nil {
		return nil, errors.New(errors.CodeInvalidParam, "企业账号必须提供企业ID")
	}

	if req.UserType == constants.UserTypeAgent && req.ShopID != nil {
		if err := middleware.CanManageShop(ctx, *req.ShopID); err != nil {
			return nil, err
		}
	}

	if req.UserType == constants.UserTypeEnterprise && req.EnterpriseID != nil {
		if err := middleware.CanManageEnterprise(ctx, *req.EnterpriseID, s.enterpriseStore); err != nil {
			return nil, err
		}
	}

	existing, err := s.accountStore.GetByUsername(ctx, req.Username)
	if err == nil && existing != nil {
		return nil, errors.New(errors.CodeUsernameExists, "用户名已存在")
	}

	existing, err = s.accountStore.GetByPhone(ctx, req.Phone)
	if err == nil && existing != nil {
		return nil, errors.New(errors.CodePhoneExists, "手机号已存在")
	}

	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
	if err != nil {
		return nil, errors.Wrap(errors.CodeInternalError, err, "密码哈希失败")
	}

	account := &model.Account{
		Username:     req.Username,
		Phone:        req.Phone,
		Password:     string(hashedPassword),
		UserType:     req.UserType,
		ShopID:       req.ShopID,
		EnterpriseID: req.EnterpriseID,
		Status:       constants.StatusEnabled,
	}

	if err := s.runLifecycleTransaction(ctx, func(tx *gorm.DB) error {
		if err := postgres.NewAccountStore(tx, nil).Create(ctx, account); err != nil {
			return err
		}
		if req.UserType == constants.UserTypeAgent && req.ShopID != nil {
			var roleIDs []uint
			_ = tx.Transaction(func(roleTx *gorm.DB) error {
				var err error
				roleIDs, err = postgres.NewShopRoleStore(roleTx, nil).GetRoleIDsByShopID(ctx, *req.ShopID)
				return err
			})
			for _, roleID := range roleIDs {
				accountRole := &model.AccountRole{AccountID: account.ID, RoleID: roleID, Status: constants.StatusEnabled, Creator: currentUserID, Updater: currentUserID}
				_ = tx.Transaction(func(roleTx *gorm.DB) error {
					return postgres.NewAccountRoleStore(roleTx, nil).Create(ctx, accountRole)
				})
			}
		}
		shop, enterprise, roles, err := loadLifecycleResources(ctx, tx, account)
		if err != nil {
			return err
		}
		return s.lifecycleAudit.WriteAccountLifecycle(ctx, tx, accountauditapp.LifecycleAudit{
			ActionCode: constants.AuditActionAccountCreated, Summary: "创建账号", Result: constants.AuditResultSuccess,
			Account: account, Shop: shop, Enterprise: enterprise, Roles: roles, AfterData: accountLifecycleData(account),
		})
	}); err != nil {
		account.ID = 0
		s.recordLifecycleFailure(ctx, constants.AuditActionAccountCreated, "创建账号失败", constants.AuditResultFailed, account, nil, nil, err)
		return nil, errors.Wrap(errors.CodeInternalError, err, "创建账号失败")
	}

	return account, nil
}

// Get 获取账号
func (s *Service) Get(ctx context.Context, id uint) (*dto.AccountResponse, error) {
	account, err := s.accountStore.GetByID(ctx, id)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, errors.New(errors.CodeAccountNotFound, "账号不存在")
		}
		return nil, errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}
	accounts := []*model.Account{account}
	return s.toAccountResponse(account, s.loadShopNames(ctx, accounts), s.loadEnterpriseNames(ctx, accounts)), nil
}

// BindWeCom 将系统账号绑定到管理员明确选择的企微应用可见成员。
func (s *Service) BindWeCom(ctx context.Context, accountID uint, request dto.BindAccountWeComRequest) (*dto.AccountResponse, error) {
	operatorID := middleware.GetUserIDFromContext(ctx)
	operatorType := middleware.GetUserTypeFromContext(ctx)
	if operatorID == 0 {
		return nil, errors.New(errors.CodeUnauthorized)
	}
	if operatorType != constants.UserTypeSuperAdmin && operatorType != constants.UserTypePlatform {
		return nil, errors.New(errors.CodeForbidden)
	}
	if s.wecomMembers == nil || request.ApplicationID == 0 || strings.TrimSpace(request.UserID) == "" {
		return nil, errors.New(errors.CodeInvalidParam)
	}
	account, err := s.accountStore.GetByID(ctx, accountID)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
		return nil, errors.Wrap(errors.CodeDatabaseError, err, "查询待绑定账号失败")
	}
	member, err := s.wecomMembers.GetVisible(ctx, request.ApplicationID, request.UserID)
	if err != nil {
		s.recordSecurityFailure(ctx, constants.AuditActionAccountWeComBound, "绑定账号企业微信身份失败", constants.AuditResultFailed, account, map[string]any{
			"account_id": account.ID, "auth_method": "wecom", "state": "failed",
		}, nil, nil, err)
		return nil, err
	}
	beforeData := model.JSONB{
		"wecom_corp_id": account.WeComCorpID, "wecom_userid": account.WeComUserID,
		"wecom_name": account.WeComName,
	}
	afterData := map[string]any{
		"wecom_corp_id": member.CorpID, "wecom_userid": member.UserID, "wecom_name": member.Name,
	}
	updatedAccount := *account
	updatedAccount.WeComCorpID = member.CorpID
	updatedAccount.WeComUserID = member.UserID
	updatedAccount.WeComName = member.Name
	updatedAccount.Updater = operatorID
	if err := s.runLifecycleTransaction(ctx, func(tx *gorm.DB) error {
		if err := postgres.NewAccountStore(tx, nil).BindWeCom(ctx, accountID, member.CorpID, member.UserID, member.Name, operatorID); err != nil {
			return err
		}
		return s.lifecycleAudit.WriteAccountSecurity(ctx, tx, accountauditapp.SecurityAudit{
			ActionCode: constants.AuditActionAccountWeComBound, Summary: "绑定账号企业微信身份",
			Result: constants.AuditResultSuccess, ActorID: operatorID, Account: &updatedAccount,
			AuthenticationKey: fmt.Sprintf("account:%d:wecom", account.ID),
			Authentication: map[string]any{
				"account_id": account.ID, "auth_method": "wecom", "state": "bound",
				"wecom_corp_id": member.CorpID, "wecom_userid": member.UserID, "wecom_name": member.Name,
			},
			BeforeData: beforeData, AfterData: afterData,
		})
	}); err != nil {
		var pgErr *pgconn.PgError
		if stdErrors.As(err, &pgErr) && pgErr.Code == "23505" {
			appErr := errors.New(errors.CodeConflict, "该企业微信成员已绑定其他系统账号")
			s.recordSecurityFailure(ctx, constants.AuditActionAccountWeComBound, "拒绝绑定账号企业微信身份", constants.AuditResultDenied, account, map[string]any{
				"account_id": account.ID, "auth_method": "wecom", "state": "denied",
			}, beforeData, nil, appErr)
			return nil, appErr
		}
		s.recordSecurityFailure(ctx, constants.AuditActionAccountWeComBound, "绑定账号企业微信身份失败", constants.AuditResultFailed, account, map[string]any{
			"account_id": account.ID, "auth_method": "wecom", "state": "failed",
		}, beforeData, nil, err)
		return nil, errors.Wrap(errors.CodeDatabaseError, err, "绑定企业微信成员失败")
	}
	account = &updatedAccount
	accounts := []*model.Account{account}
	return s.toAccountResponse(account, s.loadShopNames(ctx, accounts), s.loadEnterpriseNames(ctx, accounts)), nil
}

// Update 更新账号
func (s *Service) Update(ctx context.Context, id uint, req *dto.UpdateAccountRequest) (*model.Account, error) {
	currentUserID := middleware.GetUserIDFromContext(ctx)
	if currentUserID == 0 {
		return nil, errors.New(errors.CodeUnauthorized, "未授权访问")
	}

	account, err := s.accountStore.GetByID(ctx, id)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
		return nil, errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}

	userType := middleware.GetUserTypeFromContext(ctx)

	if userType == constants.UserTypeAgent {
		if account.ShopID == nil {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountUpdated, "拒绝更新账号", constants.AuditResultDenied, account, nil, nil, errors.New(errors.CodeForbidden))
			return nil, errors.New(errors.CodeForbidden, "无权限操作该账号")
		}
		if err := middleware.CanManageShop(ctx, *account.ShopID); err != nil {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountUpdated, "拒绝更新账号", constants.AuditResultDenied, account, nil, nil, err)
			return nil, errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
	}

	beforeData := accountLifecycleData(account)

	if req.Username != nil {
		existing, err := s.accountStore.GetByUsername(ctx, *req.Username)
		if err == nil && existing != nil && existing.ID != id {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountUpdated, "拒绝更新重复用户名", constants.AuditResultDenied, account, beforeData, nil, errors.New(errors.CodeUsernameExists))
			return nil, errors.New(errors.CodeUsernameExists, "用户名已存在")
		}
		account.Username = *req.Username
	}

	if req.Phone != nil {
		existing, err := s.accountStore.GetByPhone(ctx, *req.Phone)
		if err == nil && existing != nil && existing.ID != id {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountUpdated, "拒绝更新重复手机号", constants.AuditResultDenied, account, beforeData, nil, errors.New(errors.CodePhoneExists))
			return nil, errors.New(errors.CodePhoneExists, "手机号已存在")
		}
		account.Phone = *req.Phone
	}

	if req.Password != nil {
		hashedPassword, err := bcrypt.GenerateFromPassword([]byte(*req.Password), bcrypt.DefaultCost)
		if err != nil {
			s.recordSecurityFailure(ctx, constants.AuditActionAccountPasswordReset, "更新账号凭据处理失败", constants.AuditResultFailed, account, passwordAuthentication(account, "failed"), beforeData, nil, err)
			return nil, errors.Wrap(errors.CodeInternalError, err, "密码哈希失败")
		}
		account.Password = string(hashedPassword)
	}

	if req.Status != nil {
		account.Status = *req.Status
	}

	account.Updater = currentUserID

	if err := s.runLifecycleTransaction(ctx, func(tx *gorm.DB) error {
		if err := postgres.NewAccountStore(tx, nil).Update(ctx, account); err != nil {
			return err
		}
		if req.Password != nil {
			return s.lifecycleAudit.WriteAccountSecurity(ctx, tx, accountauditapp.SecurityAudit{
				ActionCode: constants.AuditActionAccountPasswordReset, Summary: "更新账号安全资料", Result: constants.AuditResultSuccess,
				ActorID: currentUserID, Account: account,
				AuthenticationKey: fmt.Sprintf("account:%d:password", account.ID),
				Authentication:    passwordAuthentication(account, "changed"),
				BeforeData:        beforeData, AfterData: accountLifecycleData(account),
			})
		}
		shop, enterprise, roles, err := loadLifecycleResources(ctx, tx, account)
		if err != nil {
			return err
		}
		return s.lifecycleAudit.WriteAccountLifecycle(ctx, tx, accountauditapp.LifecycleAudit{
			ActionCode: constants.AuditActionAccountUpdated, Summary: "更新账号", Result: constants.AuditResultSuccess,
			Account: account, Shop: shop, Enterprise: enterprise, Roles: roles,
			BeforeData: beforeData, AfterData: accountLifecycleData(account),
		})
	}); err != nil {
		if req.Password != nil {
			s.recordSecurityFailure(ctx, constants.AuditActionAccountPasswordReset, "更新账号安全资料失败", constants.AuditResultFailed, account, passwordAuthentication(account, "failed"), beforeData, nil, err)
		} else {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountUpdated, "更新账号失败", constants.AuditResultFailed, account, beforeData, nil, err)
		}
		return nil, errors.Wrap(errors.CodeInternalError, err, "更新账号失败")
	}
	if req.Password != nil {
		s.revokeAccountTokens(ctx, account.ID)
	}

	return account, nil
}

// Delete 软删除账号
func (s *Service) Delete(ctx context.Context, id uint) error {
	currentUserID := middleware.GetUserIDFromContext(ctx)
	if currentUserID == 0 {
		return errors.New(errors.CodeUnauthorized, "未授权访问")
	}

	account, err := s.accountStore.GetByID(ctx, id)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
		return errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}

	userType := middleware.GetUserTypeFromContext(ctx)

	if userType == constants.UserTypeAgent {
		if account.ShopID == nil {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountDeleted, "拒绝删除账号", constants.AuditResultDenied, account, nil, nil, errors.New(errors.CodeForbidden))
			return errors.New(errors.CodeForbidden, "无权限操作该账号")
		}
		if err := middleware.CanManageShop(ctx, *account.ShopID); err != nil {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountDeleted, "拒绝删除账号", constants.AuditResultDenied, account, nil, nil, err)
			return errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
	}

	beforeData := accountLifecycleData(account)
	if err := s.runLifecycleTransaction(ctx, func(tx *gorm.DB) error {
		shop, enterprise, roles, err := loadLifecycleResources(ctx, tx, account)
		if err != nil {
			return err
		}
		if err := postgres.NewAccountStore(tx, nil).Delete(ctx, id); err != nil {
			return err
		}
		return s.lifecycleAudit.WriteAccountLifecycle(ctx, tx, accountauditapp.LifecycleAudit{
			ActionCode: constants.AuditActionAccountDeleted, Summary: "删除账号", Result: constants.AuditResultSuccess,
			Account: account, Shop: shop, Enterprise: enterprise, Roles: roles, BeforeData: beforeData,
		})
	}); err != nil {
		s.recordLifecycleFailure(ctx, constants.AuditActionAccountDeleted, "删除账号失败", constants.AuditResultFailed, account, beforeData, nil, err)
		return errors.Wrap(errors.CodeInternalError, err, "删除账号失败")
	}

	return nil
}

// List 查询账号列表
func (s *Service) List(ctx context.Context, req *dto.AccountListRequest) ([]*dto.AccountResponse, int64, error) {
	opts := &store.QueryOptions{
		Page:     req.Page,
		PageSize: req.PageSize,
		OrderBy:  "id DESC",
	}
	if opts.Page == 0 {
		opts.Page = 1
	}
	if opts.PageSize == 0 {
		opts.PageSize = constants.DefaultPageSize
	}

	filters := make(map[string]interface{})
	if req.Username != "" {
		filters["username"] = req.Username
	}
	if req.Phone != "" {
		filters["phone"] = req.Phone
	}
	if req.UserType != nil {
		filters["user_type"] = *req.UserType
	}
	if req.Status != nil {
		filters["status"] = *req.Status
	}
	if req.ShopID != nil {
		filters["shop_id"] = *req.ShopID
	}
	if req.EnterpriseID != nil {
		filters["enterprise_id"] = *req.EnterpriseID
	}

	accounts, total, err := s.accountStore.List(ctx, opts, filters)
	if err != nil {
		return nil, 0, err
	}

	shopMap := s.loadShopNames(ctx, accounts)
	enterpriseMap := s.loadEnterpriseNames(ctx, accounts)

	responses := make([]*dto.AccountResponse, 0, len(accounts))
	for _, acc := range accounts {
		resp := s.toAccountResponse(acc, shopMap, enterpriseMap)
		responses = append(responses, resp)
	}

	return responses, total, nil
}

// AssignRoles 为账号分配角色（支持空数组清空所有角色，超级管理员禁止分配）
func (s *Service) AssignRoles(ctx context.Context, accountID uint, roleIDs []uint) ([]*model.AccountRole, error) {
	currentUserID := middleware.GetUserIDFromContext(ctx)
	if currentUserID == 0 {
		return nil, errors.New(errors.CodeUnauthorized, "未授权访问")
	}

	account, err := s.accountStore.GetByID(ctx, accountID)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
		return nil, errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}

	userType := middleware.GetUserTypeFromContext(ctx)

	if userType == constants.UserTypeAgent {
		if account.ShopID == nil {
			err := errors.New(errors.CodeForbidden, "无权限操作该账号")
			s.recordRoleAssignmentFailure(ctx, constants.AuditActionAccountRolesAssigned, account, nil, err)
			return nil, err
		}
		if err := middleware.CanManageShop(ctx, *account.ShopID); err != nil {
			appErr := errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
			s.recordRoleAssignmentFailure(ctx, constants.AuditActionAccountRolesAssigned, account, nil, appErr)
			return nil, appErr
		}
	}

	if account.UserType == constants.UserTypeSuperAdmin {
		err := errors.New(errors.CodeInvalidParam, "超级管理员不允许分配角色")
		s.recordRoleAssignmentFailure(ctx, constants.AuditActionAccountRolesAssigned, account, nil, err)
		return nil, err
	}

	assigned, changedRoles, err := s.assignAccountRoles(ctx, account, currentUserID, roleIDs)
	if err != nil {
		s.recordRoleAssignmentFailure(ctx, constants.AuditActionAccountRolesAssigned, account, changedRoles, err)
		return nil, err
	}
	return assigned, nil
}

// GetRoles 获取账号的所有角色
func (s *Service) GetRoles(ctx context.Context, accountID uint) ([]*model.Role, error) {
	// 检查账号存在
	_, err := s.accountStore.GetByID(ctx, accountID)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, errors.New(errors.CodeAccountNotFound, "账号不存在")
		}
		return nil, errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}

	// 获取角色 ID 列表
	roleIDs, err := s.accountRoleStore.GetRoleIDsByAccountID(ctx, accountID)
	if err != nil {
		return nil, errors.Wrap(errors.CodeInternalError, err, "获取账号角色 ID 失败")
	}

	if len(roleIDs) == 0 {
		return []*model.Role{}, nil
	}

	// 获取角色详情
	return s.roleStore.GetByIDs(ctx, roleIDs)
}

// RemoveRole 移除账号的角色
func (s *Service) RemoveRole(ctx context.Context, accountID, roleID uint) error {
	currentUserID := middleware.GetUserIDFromContext(ctx)
	if currentUserID == 0 {
		return errors.New(errors.CodeUnauthorized, "未授权访问")
	}

	account, err := s.accountStore.GetByID(ctx, accountID)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
		return errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}

	userType := middleware.GetUserTypeFromContext(ctx)

	if userType == constants.UserTypeAgent {
		if account.ShopID == nil {
			err := errors.New(errors.CodeForbidden, "无权限操作该账号")
			s.recordRoleAssignmentFailure(ctx, constants.AuditActionAccountRoleRemoved, account, nil, err)
			return err
		}
		if err := middleware.CanManageShop(ctx, *account.ShopID); err != nil {
			appErr := errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
			s.recordRoleAssignmentFailure(ctx, constants.AuditActionAccountRoleRemoved, account, nil, appErr)
			return appErr
		}
	}

	role, err := s.removeAccountRole(ctx, account, currentUserID, roleID)
	if err != nil {
		roles := []*model.Role(nil)
		if role != nil {
			roles = []*model.Role{role}
		}
		s.recordRoleAssignmentFailure(ctx, constants.AuditActionAccountRoleRemoved, account, roles, err)
		return err
	}
	return nil
}

func (s *Service) assignAccountRoles(ctx context.Context, account *model.Account, operatorID uint, requested []uint) ([]*model.AccountRole, []*model.Role, error) {
	if s.db == nil || s.accessAudit == nil {
		return nil, nil, errors.New(errors.CodeInvalidStatus, "账号角色审计接缝未配置")
	}
	assigned := make([]*model.AccountRole, 0, len(requested))
	var changedRoles []*model.Role
	err := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Select("id").First(&model.Account{}, account.ID).Error; err != nil {
			return errors.Wrap(errors.CodeDatabaseError, err, "锁定账号角色关系失败")
		}
		accountRoles := postgres.NewAccountRoleStore(tx, nil)
		roles := postgres.NewRoleStore(tx)
		scopeShop, err := accountRoleScopeShop(ctx, tx, account.ShopID)
		if err != nil {
			return err
		}
		beforeIDs, err := accountRoles.GetRoleIDsByAccountID(ctx, account.ID)
		if err != nil {
			return errors.Wrap(errors.CodeDatabaseError, err, "查询账号现有角色失败")
		}
		afterIDs, changes, err := s.applyAccountRoleAssignment(ctx, accountRoles, roles, account, operatorID, beforeIDs, requested, &assigned)
		if err != nil {
			return err
		}
		changedRoles = changes
		if len(changes) == 0 {
			return nil
		}
		if err := s.accessAudit.WriteAccessChange(ctx, tx, accessauditapp.ChangeAudit{
			ActionCode: constants.AuditActionAccountRolesAssigned, Summary: "为账号分配角色",
			OperatorID: operatorID, Account: account, Shop: scopeShop, Roles: roleAssignmentChanges(changes, beforeIDs, afterIDs),
			BeforeData: map[string]any{"role_ids": sortedRoleIDs(beforeIDs)},
			AfterData:  map[string]any{"role_ids": sortedRoleIDs(afterIDs)},
		}); err != nil {
			return errors.Wrap(errors.CodeInternalError, err, "写入账号角色审计失败")
		}
		return nil
	})
	if err != nil {
		return nil, changedRoles, err
	}
	s.clearAccountPermissionCache(ctx, account.ID)
	return assigned, changedRoles, nil
}

func (s *Service) applyAccountRoleAssignment(ctx context.Context, accountRoles *postgres.AccountRoleStore, roles *postgres.RoleStore, account *model.Account, operatorID uint, beforeIDs, requested []uint, assigned *[]*model.AccountRole) ([]uint, []*model.Role, error) {
	if len(requested) == 0 {
		if len(beforeIDs) == 0 {
			return []uint{}, nil, nil
		}
		removed, err := roles.GetByIDs(ctx, beforeIDs)
		if err != nil {
			return nil, nil, errors.Wrap(errors.CodeDatabaseError, err, "查询待移除角色失败")
		}
		if err := accountRoles.DeleteByAccountID(ctx, account.ID); err != nil {
			return nil, nil, errors.Wrap(errors.CodeDatabaseError, err, "清空账号角色失败")
		}
		return []uint{}, removed, nil
	}
	requestedRoles := make([]*model.Role, 0, len(requested))
	for _, roleID := range requested {
		role, err := roles.GetByID(ctx, roleID)
		if err != nil {
			if err == gorm.ErrRecordNotFound {
				return nil, nil, errors.New(errors.CodeRoleNotFound, fmt.Sprintf("角色 %d 不存在", roleID))
			}
			return nil, nil, errors.Wrap(errors.CodeDatabaseError, err, "查询角色失败")
		}
		if !constants.IsRoleTypeMatchUserType(role.RoleType, account.UserType) {
			return nil, nil, errors.New(errors.CodeInvalidParam, "角色类型与账号类型不匹配")
		}
		requestedRoles = append(requestedRoles, role)
	}
	existing := roleIDSet(beforeIDs)
	newRoleCount := 0
	for _, roleID := range requested {
		if !existing[roleID] {
			newRoleCount++
		}
	}
	maxRoles := constants.GetMaxRolesForUserType(account.UserType)
	if maxRoles == 0 {
		return nil, nil, errors.New(errors.CodeInvalidParam, "该用户类型不需要分配角色")
	}
	if maxRoles != -1 && len(beforeIDs)+newRoleCount > maxRoles {
		return nil, nil, errors.New(errors.CodeInvalidParam, fmt.Sprintf("该用户类型最多只能分配 %d 个角色", maxRoles))
	}
	changed := make([]*model.Role, 0, newRoleCount)
	addedIDs := make([]uint, 0, newRoleCount)
	for index, roleID := range requested {
		if existing[roleID] {
			continue
		}
		accountRole := &model.AccountRole{AccountID: account.ID, RoleID: roleID, Status: constants.StatusEnabled, Creator: operatorID, Updater: operatorID}
		if err := accountRoles.Create(ctx, accountRole); err != nil {
			return nil, changed, errors.Wrap(errors.CodeDatabaseError, err, "创建账号-角色关联失败")
		}
		*assigned = append(*assigned, accountRole)
		changed = append(changed, requestedRoles[index])
		addedIDs = append(addedIDs, roleID)
		existing[roleID] = true
	}
	return append(append([]uint(nil), beforeIDs...), addedIDs...), changed, nil
}

func (s *Service) removeAccountRole(ctx context.Context, account *model.Account, operatorID, roleID uint) (*model.Role, error) {
	if s.db == nil || s.accessAudit == nil {
		return nil, errors.New(errors.CodeInvalidStatus, "账号角色审计接缝未配置")
	}
	var removed *model.Role
	err := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Select("id").First(&model.Account{}, account.ID).Error; err != nil {
			return errors.Wrap(errors.CodeDatabaseError, err, "锁定账号角色关系失败")
		}
		accountRoles := postgres.NewAccountRoleStore(tx, nil)
		scopeShop, err := accountRoleScopeShop(ctx, tx, account.ShopID)
		if err != nil {
			return err
		}
		beforeIDs, err := accountRoles.GetRoleIDsByAccountID(ctx, account.ID)
		if err != nil {
			return errors.Wrap(errors.CodeDatabaseError, err, "查询账号现有角色失败")
		}
		if !slices.Contains(beforeIDs, roleID) {
			return nil
		}
		removed, err = postgres.NewRoleStore(tx).GetByID(ctx, roleID)
		if err != nil {
			return errors.Wrap(errors.CodeDatabaseError, err, "查询待移除角色失败")
		}
		if err := accountRoles.Delete(ctx, account.ID, roleID); err != nil {
			return errors.Wrap(errors.CodeDatabaseError, err, "删除账号-角色关联失败")
		}
		afterIDs := removeRoleID(beforeIDs, roleID)
		if err := s.accessAudit.WriteAccessChange(ctx, tx, accessauditapp.ChangeAudit{
			ActionCode: constants.AuditActionAccountRoleRemoved, Summary: "移除账号角色",
			OperatorID: operatorID, Account: account, Shop: scopeShop,
			Roles:      []accessauditapp.RoleChange{{Role: removed, BeforeData: map[string]any{"assigned": true}, AfterData: map[string]any{"assigned": false}}},
			BeforeData: map[string]any{"role_ids": sortedRoleIDs(beforeIDs)},
			AfterData:  map[string]any{"role_ids": sortedRoleIDs(afterIDs)},
		}); err != nil {
			return errors.Wrap(errors.CodeInternalError, err, "写入账号角色审计失败")
		}
		return nil
	})
	if err == nil && removed != nil {
		s.clearAccountPermissionCache(ctx, account.ID)
	}
	return removed, err
}

func (s *Service) clearAccountPermissionCache(ctx context.Context, accountID uint) {
	if s.redisClient == nil {
		return
	}
	if err := s.redisClient.Del(ctx, constants.RedisUserPermissionsKey(accountID)).Err(); err != nil {
		logger.GetAppLogger().Warn("清理账号权限缓存失败", zap.Uint("account_id", accountID), zap.Error(err))
	}
}

func (s *Service) recordRoleAssignmentFailure(ctx context.Context, action string, account *model.Account, roles []*model.Role, originalErr error) {
	changes := make([]accessauditapp.RoleChange, 0, len(roles))
	for _, role := range roles {
		changes = append(changes, accessauditapp.RoleChange{Role: role})
	}
	accessauditapp.RecordFailure(ctx, s.db, s.accessAudit, accessauditapp.ChangeAudit{
		ActionCode: action, Summary: "账号角色操作失败", Result: accessFailureResult(originalErr),
		OperatorID: middleware.GetUserIDFromContext(ctx), Account: account, Shop: s.loadAccountRoleScopeShop(ctx, account), Roles: changes,
	}, originalErr)
}

func accountRoleScopeShop(ctx context.Context, tx *gorm.DB, shopID *uint) (*model.Shop, error) {
	if shopID == nil {
		return nil, nil
	}
	shop, err := postgres.NewShopStore(tx, nil).GetByID(ctx, *shopID)
	if err != nil {
		return nil, errors.Wrap(errors.CodeDatabaseError, err, "查询账号所属店铺失败")
	}
	return shop, nil
}

func (s *Service) loadAccountRoleScopeShop(ctx context.Context, account *model.Account) *model.Shop {
	if account == nil || account.ShopID == nil || s.shopStore == nil {
		return nil
	}
	shops, err := s.shopStore.GetByIDs(ctx, []uint{*account.ShopID})
	if err != nil || len(shops) == 0 {
		return nil
	}
	return shops[0]
}

func roleAssignmentChanges(roles []*model.Role, beforeIDs, afterIDs []uint) []accessauditapp.RoleChange {
	before, after := roleIDSet(beforeIDs), roleIDSet(afterIDs)
	changes := make([]accessauditapp.RoleChange, 0, len(roles))
	for _, role := range roles {
		changes = append(changes, accessauditapp.RoleChange{
			Role: role, BeforeData: map[string]any{"assigned": before[role.ID]}, AfterData: map[string]any{"assigned": after[role.ID]},
		})
	}
	return changes
}

func accessFailureResult(err error) string {
	var appErr *errors.AppError
	if stdErrors.As(err, &appErr) {
		switch appErr.Code {
		case errors.CodeForbidden, errors.CodeInvalidParam, errors.CodeNotFound, errors.CodeRoleNotFound:
			return constants.AuditResultDenied
		}
	}
	return constants.AuditResultFailed
}

func roleIDSet(ids []uint) map[uint]bool {
	set := make(map[uint]bool, len(ids))
	for _, id := range ids {
		set[id] = true
	}
	return set
}

func sortedRoleIDs(ids []uint) []uint {
	result := append([]uint(nil), ids...)
	slices.Sort(result)
	return result
}

func removeRoleID(ids []uint, removed uint) []uint {
	result := make([]uint, 0, len(ids))
	for _, id := range ids {
		if id != removed {
			result = append(result, id)
		}
	}
	return result
}

// ValidatePassword 验证密码
func (s *Service) ValidatePassword(plainPassword, hashedPassword string) bool {
	err := bcrypt.CompareHashAndPassword([]byte(hashedPassword), []byte(plainPassword))
	return err == nil
}

// UpdatePassword 修改账号密码（管理员重置场景，无需旧密码）
func (s *Service) UpdatePassword(ctx context.Context, accountID uint, newPassword string) error {
	currentUserID := middleware.GetUserIDFromContext(ctx)
	if currentUserID == 0 {
		return errors.New(errors.CodeUnauthorized, "未授权访问")
	}

	account, err := s.accountStore.GetByID(ctx, accountID)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return errors.New(errors.CodeAccountNotFound, "账号不存在")
		}
		return errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}

	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(newPassword), bcrypt.DefaultCost)
	if err != nil {
		s.recordSecurityFailure(ctx, constants.AuditActionAccountPasswordReset, "重置账号密码失败", constants.AuditResultFailed, account, passwordAuthentication(account, "failed"), nil, nil, err)
		return errors.Wrap(errors.CodeInternalError, err, "密码哈希失败")
	}

	if err := s.runLifecycleTransaction(ctx, func(tx *gorm.DB) error {
		if err := postgres.NewAccountStore(tx, nil).UpdatePassword(ctx, accountID, string(hashedPassword), currentUserID); err != nil {
			return err
		}
		return s.lifecycleAudit.WriteAccountSecurity(ctx, tx, accountauditapp.SecurityAudit{
			ActionCode: constants.AuditActionAccountPasswordReset, Summary: "重置账号密码",
			Result: constants.AuditResultSuccess, ActorID: currentUserID, Account: account,
			AuthenticationKey: fmt.Sprintf("account:%d:password", account.ID),
			Authentication:    passwordAuthentication(account, "changed"),
			BeforeData:        map[string]any{"credentials_configured": account.Password != ""},
			AfterData:         map[string]any{"credentials_configured": true},
		})
	}); err != nil {
		s.recordSecurityFailure(ctx, constants.AuditActionAccountPasswordReset, "重置账号密码失败", constants.AuditResultFailed, account, passwordAuthentication(account, "failed"), nil, nil, err)
		return errors.Wrap(errors.CodeInternalError, err, "更新密码失败")
	}
	s.revokeAccountTokens(ctx, account.ID)

	return nil
}

func (s *Service) revokeAccountTokens(ctx context.Context, accountID uint) {
	if s.tokenManager == nil {
		return
	}
	if err := s.tokenManager.RevokeAllUserTokens(ctx, accountID); err != nil {
		logger.GetAppLogger().Warn("改密后撤销账号令牌失败", zap.Uint("account_id", accountID), zap.Error(err))
	}
}

func (s *Service) recordSecurityFailure(
	ctx context.Context,
	actionCode, summary, result string,
	account *model.Account,
	authentication, beforeData, afterData map[string]any,
	originalErr error,
) {
	if s.db == nil || s.lifecycleAudit == nil || account == nil || account.ID == 0 {
		return
	}
	errorCode := strconv.Itoa(errors.CodeInternalError)
	var appErr *errors.AppError
	if stdErrors.As(originalErr, &appErr) {
		errorCode = strconv.Itoa(appErr.Code)
	} else if result == constants.AuditResultDenied {
		errorCode = strconv.Itoa(errors.CodeForbidden)
	}
	operatorID := middleware.GetUserIDFromContext(ctx)
	if operatorID == 0 {
		operatorID = account.ID
	}
	err := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
		return s.lifecycleAudit.WriteAccountSecurity(ctx, tx, accountauditapp.SecurityAudit{
			ActionCode: actionCode, Summary: summary, Result: result, ErrorCode: errorCode, ErrorSummary: summary,
			ActorID: operatorID, Account: account, AuthenticationKey: fmt.Sprintf("account:%d:security", account.ID),
			Authentication: authentication, BeforeData: beforeData, AfterData: afterData,
		})
	})
	if err != nil {
		requestID := ""
		if value := middleware.GetRequestIDFromContext(ctx); value != nil {
			requestID = *value
		}
		auditfailure.RecordSecondaryWriteFailure(actionCode, account.Username, requestID, requestID, errorCode, err)
	}
}

func passwordAuthentication(account *model.Account, state string) map[string]any {
	return map[string]any{"account_id": account.ID, "auth_method": "password", "state": state}
}

// UpdateStatus 修改账号状态（启用/禁用）
func (s *Service) UpdateStatus(ctx context.Context, accountID uint, status int) error {
	currentUserID := middleware.GetUserIDFromContext(ctx)
	if currentUserID == 0 {
		return errors.New(errors.CodeUnauthorized, "未授权访问")
	}
	if status != constants.StatusDisabled && status != constants.StatusEnabled {
		return errors.New(errors.CodeInvalidParam, "账号状态无效")
	}

	account, err := s.accountStore.GetByID(ctx, accountID)
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return errors.New(errors.CodeAccountNotFound, "账号不存在")
		}
		return errors.Wrap(errors.CodeInternalError, err, "获取账号失败")
	}
	if middleware.GetUserTypeFromContext(ctx) == constants.UserTypeAgent {
		if account.ShopID == nil || middleware.CanManageShop(ctx, *account.ShopID) != nil {
			s.recordLifecycleFailure(ctx, constants.AuditActionAccountUpdated, "拒绝更新账号状态", constants.AuditResultDenied, account, nil, nil, errors.New(errors.CodeForbidden))
			return errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
		}
	}
	beforeData := accountLifecycleData(account)
	if err := s.runLifecycleTransaction(ctx, func(tx *gorm.DB) error {
		if err := postgres.NewAccountStore(tx, nil).UpdateStatus(ctx, accountID, status, currentUserID); err != nil {
			return err
		}
		account.Status = status
		account.Updater = currentUserID
		shop, enterprise, roles, err := loadLifecycleResources(ctx, tx, account)
		if err != nil {
			return err
		}
		return s.lifecycleAudit.WriteAccountLifecycle(ctx, tx, accountauditapp.LifecycleAudit{
			ActionCode: constants.AuditActionAccountUpdated, Summary: "更新账号状态", Result: constants.AuditResultSuccess,
			Account: account, Shop: shop, Enterprise: enterprise, Roles: roles,
			BeforeData: beforeData, AfterData: accountLifecycleData(account),
		})
	}); err != nil {
		s.recordLifecycleFailure(ctx, constants.AuditActionAccountUpdated, "更新账号状态失败", constants.AuditResultFailed, account, beforeData, nil, err)
		return errors.Wrap(errors.CodeInternalError, err, "更新状态失败")
	}

	return nil
}

func (s *Service) runLifecycleTransaction(ctx context.Context, fn func(*gorm.DB) error) error {
	if s.db == nil || s.lifecycleAudit == nil {
		return errors.New(errors.CodeInvalidStatus, "账号生命周期审计接缝未配置")
	}
	return s.db.WithContext(ctx).Transaction(fn)
}

func (s *Service) recordLifecycleFailure(
	ctx context.Context,
	actionCode, summary, result string,
	account *model.Account,
	beforeData, afterData map[string]any,
	originalErr error,
) {
	if s.db == nil || s.lifecycleAudit == nil || account == nil {
		return
	}
	errorCode := strconv.Itoa(errors.CodeInternalError)
	var appErr *errors.AppError
	if stdErrors.As(originalErr, &appErr) {
		errorCode = strconv.Itoa(appErr.Code)
	} else if result == constants.AuditResultDenied {
		errorCode = strconv.Itoa(errors.CodeForbidden)
	}
	err := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
		shop, enterprise, roles, loadErr := loadLifecycleResources(ctx, tx, account)
		if loadErr != nil {
			return loadErr
		}
		return s.lifecycleAudit.WriteAccountLifecycle(ctx, tx, accountauditapp.LifecycleAudit{
			ActionCode: actionCode, Summary: summary, Result: result, ErrorCode: errorCode,
			ErrorSummary: summary, Account: account, Shop: shop, Enterprise: enterprise, Roles: roles,
			BeforeData: beforeData, AfterData: afterData,
		})
	})
	if err != nil {
		requestID := ""
		if value := middleware.GetRequestIDFromContext(ctx); value != nil {
			requestID = *value
		}
		auditfailure.RecordSecondaryWriteFailure(actionCode, account.Username, requestID, requestID, errorCode, err)
	}
}

func loadLifecycleResources(ctx context.Context, tx *gorm.DB, account *model.Account) (*model.Shop, *model.Enterprise, []*model.Role, error) {
	var shop *model.Shop
	if account.ShopID != nil {
		shop = &model.Shop{}
		if err := tx.WithContext(ctx).Unscoped().First(shop, *account.ShopID).Error; err != nil {
			return nil, nil, nil, err
		}
	}
	var enterprise *model.Enterprise
	if account.EnterpriseID != nil {
		enterprise = &model.Enterprise{}
		if err := tx.WithContext(ctx).Unscoped().First(enterprise, *account.EnterpriseID).Error; err != nil {
			return nil, nil, nil, err
		}
	}
	var roles []*model.Role
	if account.ID != 0 {
		if err := tx.WithContext(ctx).Table("tb_role AS r").
			Joins("JOIN tb_account_role AS ar ON ar.role_id = r.id AND ar.deleted_at IS NULL").
			Where("ar.account_id = ?", account.ID).Order("r.id ASC").Find(&roles).Error; err != nil {
			return nil, nil, nil, err
		}
	}
	return shop, enterprise, roles, nil
}

func accountLifecycleData(account *model.Account) map[string]any {
	return map[string]any{
		"id": account.ID, "username": account.Username, "phone": account.Phone,
		"user_type": account.UserType, "shop_id": account.ShopID,
		"enterprise_id": account.EnterpriseID, "status": account.Status,
	}
}

// ListPlatformAccounts 查询平台账号列表（自动筛选 user_type IN (1, 2)）
func (s *Service) ListPlatformAccounts(ctx context.Context, req *dto.PlatformAccountListRequest) ([]*model.Account, int64, error) {
	opts := &store.QueryOptions{
		Page:     req.Page,
		PageSize: req.PageSize,
		OrderBy:  "id DESC",
	}
	if opts.Page == 0 {
		opts.Page = 1
	}
	if opts.PageSize == 0 {
		opts.PageSize = constants.DefaultPageSize
	}

	filters := make(map[string]interface{})
	if req.Username != "" {
		filters["username"] = req.Username
	}
	if req.Phone != "" {
		filters["phone"] = req.Phone
	}
	if req.Status != nil {
		filters["status"] = *req.Status
	}

	return s.accountStore.ListPlatformAccounts(ctx, opts, filters)
}

// CreateSystemAccount 系统内部创建账号方法，用于系统初始化场景（绕过当前用户检查）
func (s *Service) CreateSystemAccount(ctx context.Context, account *model.Account) error {
	if account.Username == "" {
		return errors.New(errors.CodeInvalidParam, "用户名不能为空")
	}
	if account.Phone == "" {
		return errors.New(errors.CodeInvalidParam, "手机号不能为空")
	}
	if account.Password == "" {
		return errors.New(errors.CodeInvalidParam, "密码不能为空")
	}

	existing, err := s.accountStore.GetByUsername(ctx, account.Username)
	if err == nil && existing != nil {
		return errors.New(errors.CodeUsernameExists, "用户名已存在")
	}

	existing, err = s.accountStore.GetByPhone(ctx, account.Phone)
	if err == nil && existing != nil {
		return errors.New(errors.CodePhoneExists, "手机号已存在")
	}

	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(account.Password), bcrypt.DefaultCost)
	if err != nil {
		return errors.Wrap(errors.CodeInternalError, err, "密码哈希失败")
	}
	account.Password = string(hashedPassword)

	if err := s.accountStore.Create(ctx, account); err != nil {
		return errors.Wrap(errors.CodeInternalError, err, "创建账号失败")
	}

	return nil
}

// loadShopNames 批量加载店铺名称
func (s *Service) loadShopNames(ctx context.Context, accounts []*model.Account) map[uint]string {
	shopIDs := make([]uint, 0)
	shopIDSet := make(map[uint]bool)

	for _, acc := range accounts {
		if acc.ShopID != nil && *acc.ShopID > 0 && !shopIDSet[*acc.ShopID] {
			shopIDs = append(shopIDs, *acc.ShopID)
			shopIDSet[*acc.ShopID] = true
		}
	}

	shopMap := make(map[uint]string)
	if len(shopIDs) > 0 {
		shops, err := s.shopStore.GetByIDs(ctx, shopIDs)
		if err == nil {
			for _, shop := range shops {
				shopMap[shop.ID] = shop.ShopName
			}
		}
	}
	return shopMap
}

// loadEnterpriseNames 批量加载企业名称
func (s *Service) loadEnterpriseNames(ctx context.Context, accounts []*model.Account) map[uint]string {
	enterpriseIDs := make([]uint, 0)
	enterpriseIDSet := make(map[uint]bool)

	for _, acc := range accounts {
		if acc.EnterpriseID != nil && *acc.EnterpriseID > 0 && !enterpriseIDSet[*acc.EnterpriseID] {
			enterpriseIDs = append(enterpriseIDs, *acc.EnterpriseID)
			enterpriseIDSet[*acc.EnterpriseID] = true
		}
	}

	enterpriseMap := make(map[uint]string)
	if len(enterpriseIDs) > 0 {
		enterprises, err := s.enterpriseStore.GetByIDs(ctx, enterpriseIDs)
		if err == nil {
			for _, ent := range enterprises {
				enterpriseMap[ent.ID] = ent.EnterpriseName
			}
		}
	}
	return enterpriseMap
}

// toAccountResponse 组装账号响应，填充关联名称
func (s *Service) toAccountResponse(acc *model.Account, shopMap map[uint]string, enterpriseMap map[uint]string) *dto.AccountResponse {
	resp := &dto.AccountResponse{
		ID:           acc.ID,
		Username:     acc.Username,
		Phone:        acc.Phone,
		UserType:     acc.UserType,
		ShopID:       acc.ShopID,
		EnterpriseID: acc.EnterpriseID,
		WeComCorpID:  acc.WeComCorpID,
		WeComUserID:  acc.WeComUserID,
		WeComName:    acc.WeComName,
		WeComBound:   acc.WeComCorpID != "" && acc.WeComUserID != "",
		Status:       acc.Status,
		StatusName:   constants.GetStatusName(acc.Status),
		Creator:      acc.Creator,
		Updater:      acc.Updater,
		CreatedAt:    acc.CreatedAt.Format("2006-01-02 15:04:05"),
		UpdatedAt:    acc.UpdatedAt.Format("2006-01-02 15:04:05"),
	}

	if acc.ShopID != nil && *acc.ShopID > 0 {
		resp.ShopName = shopMap[*acc.ShopID]
	}

	if acc.EnterpriseID != nil && *acc.EnterpriseID > 0 {
		resp.EnterpriseName = enterpriseMap[*acc.EnterpriseID]
	}

	return resp
}