web

server/internal/service/platform.go

@@ -0,0 +1,150 @@
+package service
+
+import (
+	"dianshang/internal/model"
+	"dianshang/internal/repository"
+	"dianshang/pkg/utils"
+	"errors"
+)
+
+// PlatformService 平台服务
+type PlatformService struct {
+	platformRepo *repository.PlatformRepository
+	productRepo  *repository.ProductRepository
+}
+
+// NewPlatformService 创建平台服务
+func NewPlatformService(platformRepo *repository.PlatformRepository, productRepo *repository.ProductRepository) *PlatformService {
+	return &PlatformService{
+		platformRepo: platformRepo,
+		productRepo:  productRepo,
+	}
+}
+
+// GetPlatformList 获取平台列表
+func (s *PlatformService) GetPlatformList(page, pageSize int, status *int, name string) ([]model.Platform, *utils.Pagination, error) {
+	if page <= 0 {
+		page = 1
+	}
+	if pageSize <= 0 || pageSize > 100 {
+		pageSize = 10
+	}
+
+	// 如果不需要分页，获取所有平台
+	if page == 0 && pageSize == 0 {
+		platforms, err := s.platformRepo.GetAll()
+		return platforms, nil, err
+	}
+
+	offset := (page - 1) * pageSize
+	
+	// TODO: 实现带筛选的分页查询
+	// 暂时先返回所有平台
+	platforms, err := s.platformRepo.GetAll()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// 简单筛选
+	var filteredPlatforms []model.Platform
+	for _, p := range platforms {
+		if status != nil && p.Status != *status {
+			continue
+		}
+		if name != "" && p.Name != name && p.Code != name {
+			continue
+		}
+		filteredPlatforms = append(filteredPlatforms, p)
+	}
+
+	total := len(filteredPlatforms)
+	
+	// 分页
+	start := offset
+	end := offset + pageSize
+	if start > total {
+		start = total
+	}
+	if end > total {
+		end = total
+	}
+	
+	result := filteredPlatforms[start:end]
+	
+	pagination := utils.NewPagination(page, pageSize)
+	pagination.Total = int64(total)
+	
+	return result, pagination, nil
+}
+
+// GetPlatformByID 根据ID获取平台
+func (s *PlatformService) GetPlatformByID(id uint) (*model.Platform, error) {
+	return s.platformRepo.GetByID(id)
+}
+
+// GetPlatformByCode 根据代码获取平台
+func (s *PlatformService) GetPlatformByCode(code string) (*model.Platform, error) {
+	return s.platformRepo.GetByCode(code)
+}
+
+// CreatePlatform 创建平台
+func (s *PlatformService) CreatePlatform(platform *model.Platform) error {
+	// 检查平台代码是否已存在
+	existing, _ := s.platformRepo.GetByCode(platform.Code)
+	if existing != nil {
+		return errors.New("平台代码已存在")
+	}
+
+	return s.platformRepo.Create(platform)
+}
+
+// UpdatePlatform 更新平台
+func (s *PlatformService) UpdatePlatform(id uint, updates map[string]interface{}) error {
+	// 检查平台是否存在
+	_, err := s.platformRepo.GetByID(id)
+	if err != nil {
+		return errors.New("平台不存在")
+	}
+
+	// 如果更新代码，检查是否与其他平台冲突
+	if code, ok := updates["code"].(string); ok {
+		existing, _ := s.platformRepo.GetByCode(code)
+		if existing != nil && existing.ID != id {
+			return errors.New("平台代码已被其他平台使用")
+		}
+	}
+
+	return s.platformRepo.Update(id, updates)
+}
+
+// DeletePlatform 删除平台
+func (s *PlatformService) DeletePlatform(id uint) error {
+	// 检查平台是否存在
+	_, err := s.platformRepo.GetByID(id)
+	if err != nil {
+		return errors.New("平台不存在")
+	}
+
+	// TODO: 检查是否有分类关联到该平台
+	// 可以选择级联删除或禁止删除
+
+	return s.platformRepo.Delete(id)
+}
+
+// GetAllActivePlatforms 获取所有启用的平台
+func (s *PlatformService) GetAllActivePlatforms() ([]model.Platform, error) {
+	platforms, err := s.platformRepo.GetAll()
+	if err != nil {
+		return nil, err
+	}
+
+	// 过滤启用的平台
+	var activePlatforms []model.Platform
+	for _, p := range platforms {
+		if p.Status == 1 {
+			activePlatforms = append(activePlatforms, p)
+		}
+	}
+
+	return activePlatforms, nil
+}