首次提交：初始化项目代码

internal/domain/auth/entity/user.go

@@ -0,0 +1,44 @@
+package entity
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type User struct {
+	ID            uint           `json:"id" gorm:"primaryKey;comment:用户ID"`
+	UserCode      string         `json:"user_code" gorm:"uniqueIndex;size:8;comment:用户码（8位随机字母数字）"`
+	Username      string         `json:"username" gorm:"uniqueIndex;size:50;comment:用户名"`
+	Password      string         `json:"-" gorm:"size:255;comment:密码（加密存储）"`
+	Email         string         `json:"email" gorm:"size:100;comment:邮箱"`
+	Phone         string         `json:"phone" gorm:"size:20;comment:手机号"`
+	Nickname      string         `json:"nickname" gorm:"size:50;comment:昵称"`
+	StorageUsed   int64          `json:"storage_used" gorm:"default:0;comment:已使用存储空间（字节）"`
+	StorageLimit  int64          `json:"storage_limit" gorm:"default:52428800;comment:存储空间限制（字节），默认50MB"`
+	CreatedAt     time.Time      `json:"created_at" gorm:"comment:创建时间"`
+	UpdatedAt     time.Time      `json:"updated_at" gorm:"comment:更新时间"`
+	DeletedAt     gorm.DeletedAt `json:"-" gorm:"comment:删除时间"`
+}
+
+func (User) TableName() string {
+	return "users"
+}
+
+func (User) TableComment() string {
+	return "用户表"
+}
+
+func NewUser(username, password, userCode, nickname string) *User {
+	if nickname == "" {
+		nickname = username
+	}
+	return &User{
+		Username:     username,
+		Password:     password,
+		UserCode:     userCode,
+		Nickname:     nickname,
+		StorageUsed:  0,
+		StorageLimit: 52428800,
+	}
+}

internal/domain/auth/repository/user_repository.go

@@ -0,0 +1,21 @@
+package repository
+
+import "cloudnest/internal/domain/auth/entity"
+
+// UserRepository defines the interface for user data access operations.
+// UserRepository 定义了用户数据访问操作的接口。
+//
+// This interface follows the Dependency Inversion Principle (DIP),
+// where the application layer depends on this abstraction rather than concrete implementations.
+//
+// 此接口遵循依赖倒置原则（DIP），应用层依赖于这个抽象而非具体实现。
+type UserRepository interface {
+	FindByUsername(username string) (*entity.User, error)
+	FindByUserCode(userCode string) (*entity.User, error)
+	FindByEmail(email string) (*entity.User, error)
+	Create(user *entity.User) error
+	FindByID(id uint) (*entity.User, error)
+	UpdateStorageUsed(userCode string, size int64) error
+	UpdateProfile(userCode, email, phone, nickname string) error
+	UpdatePassword(userCode, newPassword string) error
+}