api키 생성 기능 및 페이지 구현

backend/internal/domain/api_key.go

@@ -0,0 +1,30 @@
+package domain
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+// ApiKey represents an internal API key for Machine-to-Machine communication.
+type ApiKey struct {
+	ID               string         `gorm:"primaryKey;type:uuid;default:gen_random_uuid()" json:"id"`
+	Name             string         `gorm:"not null" json:"name"`
+	ClientID         string         `gorm:"uniqueIndex;not null" json:"clientId"`
+	ClientSecretHash string         `gorm:"not null" json:"-"`
+	Scopes           string         `json:"scopes"` // Space or comma separated
+	Status           string         `gorm:"default:'active'" json:"status"`
+	LastUsedAt       *time.Time     `json:"lastUsedAt"`
+	CreatedAt        time.Time      `json:"createdAt"`
+	UpdatedAt        time.Time      `json:"updatedAt"`
+	DeletedAt        gorm.DeletedAt `gorm:"index" json:"-"`
+}
+
+// BeforeCreate hook to generate UUID if not present.
+func (k *ApiKey) BeforeCreate(tx *gorm.DB) (err error) {
+	if k.ID == "" {
+		k.ID = uuid.NewString()
+	}
+	return
+}