chore: defer Sourcery auth; continue work

backend/internal/services/proxyhost_service.go

@@ -0,0 +1,90 @@
+package services
+
+import (
+	"errors"
+	"fmt"
+
+	"gorm.io/gorm"
+
+	"github.com/Wikid82/CaddyProxyManagerPlus/backend/internal/models"
+)
+
+// ProxyHostService encapsulates business logic for proxy host management.
+type ProxyHostService struct {
+	db *gorm.DB
+}
+
+// NewProxyHostService creates a new proxy host service.
+func NewProxyHostService(db *gorm.DB) *ProxyHostService {
+	return &ProxyHostService{db: db}
+}
+
+// ValidateUniqueDomain ensures no duplicate domains exist before creation/update.
+func (s *ProxyHostService) ValidateUniqueDomain(domain string, excludeID uint) error {
+	var count int64
+	query := s.db.Model(&models.ProxyHost{}).Where("domain = ?", domain)
+
+	if excludeID > 0 {
+		query = query.Where("id != ?", excludeID)
+	}
+
+	if err := query.Count(&count).Error; err != nil {
+		return fmt.Errorf("checking domain uniqueness: %w", err)
+	}
+
+	if count > 0 {
+		return errors.New("domain already exists")
+	}
+
+	return nil
+}
+
+// Create validates and creates a new proxy host.
+func (s *ProxyHostService) Create(host *models.ProxyHost) error {
+	if err := s.ValidateUniqueDomain(host.Domain, 0); err != nil {
+		return err
+	}
+
+	return s.db.Create(host).Error
+}
+
+// Update validates and updates an existing proxy host.
+func (s *ProxyHostService) Update(host *models.ProxyHost) error {
+	if err := s.ValidateUniqueDomain(host.Domain, host.ID); err != nil {
+		return err
+	}
+
+	return s.db.Save(host).Error
+}
+
+// Delete removes a proxy host.
+func (s *ProxyHostService) Delete(id uint) error {
+	return s.db.Delete(&models.ProxyHost{}, id).Error
+}
+
+// GetByID retrieves a proxy host by ID.
+func (s *ProxyHostService) GetByID(id uint) (*models.ProxyHost, error) {
+	var host models.ProxyHost
+	if err := s.db.First(&host, id).Error; err != nil {
+		return nil, err
+	}
+	return &host, nil
+}
+
+// GetByUUID retrieves a proxy host by UUID.
+func (s *ProxyHostService) GetByUUID(uuid string) (*models.ProxyHost, error) {
+	var host models.ProxyHost
+	if err := s.db.Where("uuid = ?", uuid).First(&host).Error; err != nil {
+		return nil, err
+	}
+	return &host, nil
+}
+
+// List retrieves all proxy hosts.
+func (s *ProxyHostService) List() ([]models.ProxyHost, error) {
+	var hosts []models.ProxyHost
+	if err := s.db.Find(&hosts).Error; err != nil {
+		return nil, err
+	}
+	return hosts, nil
+}