first commit

internal/services/banner_service.go

@@ -0,0 +1,172 @@
+package services
+
+import (
+	"errors"
+	"strings"
+
+	"gauth-central/internal/database"
+	"gauth-central/internal/models"
+
+	"gorm.io/gorm"
+)
+
+const defaultBannerColor = "#FFFFFF"
+
+type BannerService struct{}
+
+func NewBannerService() *BannerService {
+	return &BannerService{}
+}
+
+// CreateBanner creates a new banner entry.
+func (s *BannerService) CreateBanner(
+	color string,
+	title string,
+	text1 string,
+	text2 string,
+	text4 string,
+	text5 string,
+	image string,
+	imageK string,
+	imageKTxt string,
+	isActive bool,
+) (*models.Banner, error) {
+	color = strings.TrimSpace(color)
+	if color == "" {
+		color = defaultBannerColor
+	}
+
+	banner := models.Banner{
+		Color:     color,
+		Title:     strings.TrimSpace(title),
+		Text1:     strings.TrimSpace(text1),
+		Text2:     strings.TrimSpace(text2),
+		Text4:     strings.TrimSpace(text4),
+		Text5:     strings.TrimSpace(text5),
+		Image:     image,
+		ImageK:    imageK,
+		ImageKTxt: strings.TrimSpace(imageKTxt),
+		IsActive:  isActive,
+	}
+
+	if err := database.DB.Create(&banner).Error; err != nil {
+		return nil, err
+	}
+
+	return s.GetBannerByID(banner.ID.String())
+}
+
+// GetAllBanners retrieves all banners. Use onlyActive to filter public data.
+func (s *BannerService) GetAllBanners(onlyActive bool) ([]models.Banner, error) {
+	var banners []models.Banner
+	query := database.DB.Order("created_at desc")
+	if onlyActive {
+		query = query.Where("is_active = ?", true)
+	}
+
+	if err := query.Find(&banners).Error; err != nil {
+		return nil, err
+	}
+
+	return banners, nil
+}
+
+// GetFirstActiveBanner returns the newest active banner.
+func (s *BannerService) GetFirstActiveBanner() (*models.Banner, error) {
+	var banner models.Banner
+	if err := database.DB.Where("is_active = ?", true).Order("created_at desc").First(&banner).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, errors.New("banner not found")
+		}
+		return nil, err
+	}
+	return &banner, nil
+}
+
+// GetBannerByID retrieves a banner by ID.
+func (s *BannerService) GetBannerByID(id string) (*models.Banner, error) {
+	var banner models.Banner
+	if err := database.DB.Where("id = ?", id).First(&banner).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, errors.New("banner not found")
+		}
+		return nil, err
+	}
+	return &banner, nil
+}
+
+// UpdateBanner updates an existing banner entry.
+func (s *BannerService) UpdateBanner(
+	id string,
+	color *string,
+	title *string,
+	text1 *string,
+	text2 *string,
+	text4 *string,
+	text5 *string,
+	image *string,
+	imageK *string,
+	imageKTxt *string,
+	isActive *bool,
+) (*models.Banner, error) {
+	banner, err := s.GetBannerByID(id)
+	if err != nil {
+		return nil, err
+	}
+
+	updates := map[string]interface{}{}
+	if color != nil {
+		clean := strings.TrimSpace(*color)
+		if clean == "" {
+			clean = defaultBannerColor
+		}
+		updates["color"] = clean
+	}
+	if title != nil {
+		updates["title"] = strings.TrimSpace(*title)
+	}
+	if text1 != nil {
+		updates["text1"] = strings.TrimSpace(*text1)
+	}
+	if text2 != nil {
+		updates["text2"] = strings.TrimSpace(*text2)
+	}
+	if text4 != nil {
+		updates["text4"] = strings.TrimSpace(*text4)
+	}
+	if text5 != nil {
+		updates["text5"] = strings.TrimSpace(*text5)
+	}
+	if image != nil {
+		updates["image"] = *image
+	}
+	if imageK != nil {
+		updates["image_k"] = *imageK
+	}
+	if imageKTxt != nil {
+		updates["image_k_txt"] = strings.TrimSpace(*imageKTxt)
+	}
+	if isActive != nil {
+		updates["is_active"] = *isActive
+	}
+
+	if len(updates) > 0 {
+		if err := database.DB.Model(banner).Updates(updates).Error; err != nil {
+			return nil, err
+		}
+	}
+
+	return s.GetBannerByID(id)
+}
+
+// DeleteBanner deletes a banner by ID.
+func (s *BannerService) DeleteBanner(id string) error {
+	result := database.DB.Delete(&models.Banner{}, "id = ?", id)
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return errors.New("banner not found")
+	}
+	return nil
+}