init: 初始化项目

internal/auth/model.go

@@ -0,0 +1,29 @@
+package auth
+
+import (
+	"time"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+type User struct {
+	ID        string    `gorm:"primaryKey" json:"id"`
+	Username  string    `gorm:"uniqueIndex;not null" json:"username"`
+	Email     string    `gorm:"uniqueIndex;not null" json:"email"`
+	Password  string    `gorm:"not null" json:"-"`          // 不在 JSON 中返回
+	Role      string    `gorm:"default:'user'" json:"role"` // user, admin
+	CreatedAt time.Time `json:"createdAt"`
+	UpdatedAt time.Time `json:"updatedAt"`
+}
+
+// HashPassword 加密密码
+func HashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	return string(bytes), err
+}
+
+// CheckPassword 验证密码
+func (u *User) CheckPassword(password string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(u.Password), []byte(password))
+	return err == nil
+}