242 lines
7.0 KiB
Go
242 lines
7.0 KiB
Go
package service
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import (
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"errors"
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"affiliate_dash/internal/model"
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"golang.org/x/crypto/bcrypt"
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"gorm.io/gorm"
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"gorm.io/gorm/clause"
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)
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type UserService struct {
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db *gorm.DB
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tenant *TenantService
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}
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func NewUserService(db *gorm.DB, tenant *TenantService) *UserService {
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return &UserService{db: db, tenant: tenant}
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}
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type UserListQuery struct {
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MerchantID uint
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Page int
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Size int
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Keyword string
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Role string
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Status *int
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}
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func (s *UserService) List(q UserListQuery) ([]model.User, int64, error) {
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if q.Page < 1 {
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q.Page = 1
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}
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if q.Size < 1 || q.Size > 100 {
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q.Size = 20
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}
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tx := s.db.Model(&model.User{})
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if q.MerchantID != 0 {
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tx = tx.Joins("JOIN merchant_members ON merchant_members.user_id = users.id").
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Where("merchant_members.merchant_id = ?", q.MerchantID)
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}
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if q.Keyword != "" {
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like := "%" + q.Keyword + "%"
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tx = tx.Where("users.username LIKE ? OR users.nickname LIKE ?", like, like)
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}
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if q.Role != "" {
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tx = tx.Where("users.role = ?", q.Role)
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}
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if q.Status != nil {
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tx = tx.Where("users.status = ?", *q.Status)
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}
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var total int64
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if err := tx.Count(&total).Error; err != nil {
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return nil, 0, err
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}
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var list []model.User
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err := tx.Order("users.id DESC").Offset((q.Page - 1) * q.Size).Limit(q.Size).Find(&list).Error
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return list, total, err
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}
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// ListMerchantMembers returns employee assignments across merchants for platform operations.
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func (s *UserService) ListMerchantMembers(page, size int) ([]model.MerchantMember, int64, error) {
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page, size = normalizePage(page, size)
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tx := s.db.Model(&model.MerchantMember{}).
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Joins("JOIN users ON users.id = merchant_members.user_id AND users.deleted_at IS NULL").
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Where("users.role = ?", model.RoleMerchant)
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var total int64
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if err := tx.Count(&total).Error; err != nil {
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return nil, 0, err
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}
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var members []model.MerchantMember
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err := tx.Preload("Merchant").Preload("User").
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Order("merchant_members.merchant_id ASC, merchant_members.id ASC").
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Offset((page - 1) * size).Limit(size).Find(&members).Error
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return members, total, err
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}
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func (s *UserService) Create(username, password, nickname, role string, merchantID uint) (*model.User, error) {
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var count int64
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s.db.Model(&model.User{}).Where("username = ?", username).Count(&count)
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if count > 0 {
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return nil, errors.New("用户名已存在")
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}
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if role == "" {
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role = model.RoleMerchant
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}
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if role != model.RoleAdmin && role != model.RoleMerchant {
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return nil, errors.New("无效的账号角色")
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}
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hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
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if err != nil {
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return nil, err
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}
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user := &model.User{
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Username: username,
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PasswordHash: string(hash),
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Nickname: nickname,
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Role: role,
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Status: 1,
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}
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if user.Nickname == "" {
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user.Nickname = username
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}
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err = s.db.Transaction(func(tx *gorm.DB) error {
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if err := tx.Create(user).Error; err != nil {
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return err
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}
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if s.tenant != nil && merchantID != 0 {
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memberRole := model.MemberRoleOperator
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if role == model.RoleAdmin {
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memberRole = model.MemberRoleOwner
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}
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member := model.MerchantMember{
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MerchantID: merchantID,
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UserID: user.ID,
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Role: memberRole,
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Status: user.Status,
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IsDefault: role == model.RoleAdmin,
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}
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if err := tx.Create(&member).Error; err != nil {
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return err
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}
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return user, nil
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}
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func (s *UserService) UpdateStatus(id uint, status int) error {
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if status != 0 && status != 1 {
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return errors.New("用户状态无效")
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}
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return s.db.Transaction(func(tx *gorm.DB) error {
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var user model.User
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if err := tx.First(&user, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return errors.New("用户不存在")
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}
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return err
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}
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if user.Role == model.RoleAdmin && user.Status == 1 && status == 0 {
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var admins int64
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if err := tx.Model(&model.User{}).Where("role = ? AND status = ?", model.RoleAdmin, 1).Count(&admins).Error; err != nil {
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return err
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}
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if admins <= 1 {
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return errors.New("至少保留一个启用的平台管理员")
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}
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}
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return tx.Model(&user).Update("status", status).Error
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})
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}
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// UpdateRole changes the platform-level account role. Promoted administrators are
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// also made owners of the self-operated merchant for a consistent merchant context.
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func (s *UserService) UpdateRole(id uint, role string, actorUserID uint) error {
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if id == 0 {
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return errors.New("用户不存在")
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}
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if id == actorUserID {
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return errors.New("不能修改当前登录账号的系统角色")
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}
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if role != model.RoleAdmin && role != model.RoleMerchant {
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return errors.New("无效的账号角色")
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}
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return s.db.Transaction(func(tx *gorm.DB) error {
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var user model.User
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if err := tx.First(&user, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return errors.New("用户不存在")
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}
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return err
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}
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if user.Role == role {
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return nil
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}
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if user.Role == model.RoleAdmin && user.Status == 1 && role != model.RoleAdmin {
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var admins int64
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if err := tx.Model(&model.User{}).Where("role = ? AND status = ?", model.RoleAdmin, 1).Count(&admins).Error; err != nil {
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return err
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}
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if admins <= 1 {
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return errors.New("至少保留一个启用的平台管理员")
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}
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}
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if err := tx.Model(&user).Update("role", role).Error; err != nil {
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return err
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}
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if role != model.RoleAdmin {
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return nil
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}
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var merchant model.Merchant
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if err := tx.Where("code = ?", model.MerchantCodeSelfOperated).First(&merchant).Error; err != nil {
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return err
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}
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member := model.MerchantMember{MerchantID: merchant.ID, UserID: user.ID, Role: model.MemberRoleOwner, Status: user.Status, IsDefault: true}
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return tx.Clauses(clause.OnConflict{
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Columns: []clause.Column{{Name: "merchant_id"}, {Name: "user_id"}},
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DoUpdates: clause.Assignments(map[string]interface{}{
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"role": model.MemberRoleOwner, "status": user.Status, "is_default": true,
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}),
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}).Create(&member).Error
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})
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}
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// Delete removes a platform account and its merchant memberships. It protects the current
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// account and the final enabled platform administrator so the platform cannot be locked out.
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func (s *UserService) Delete(id, actorUserID uint) error {
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if id == 0 {
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return errors.New("用户不存在")
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}
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if id == actorUserID {
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return errors.New("不能删除当前登录账号")
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}
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return s.db.Transaction(func(tx *gorm.DB) error {
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var user model.User
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if err := tx.First(&user, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return errors.New("用户不存在")
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}
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return err
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}
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if user.Role == model.RoleAdmin && user.Status == 1 {
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var admins int64
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if err := tx.Model(&model.User{}).Where("role = ? AND status = ?", model.RoleAdmin, 1).Count(&admins).Error; err != nil {
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return err
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}
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if admins <= 1 {
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return errors.New("至少保留一个启用的平台管理员")
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}
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}
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if err := tx.Where("user_id = ?", id).Delete(&model.MerchantMember{}).Error; err != nil {
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return err
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}
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return tx.Delete(&user).Error
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})
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}
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