feat: 初始提交云印享付费打印服务后端

cloudprint-backend/internal/grpc/service/library_service.go

@@ -0,0 +1,91 @@
+package service
+
+import (
+	"context"
+
+	"github.com/cloudprint/cloudprint-backend/internal/repository"
+	pb "github.com/cloudprint/cloudprint-backend/proto/generated"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+type LibraryServiceServer struct {
+	pb.UnimplementedLibraryServiceServer
+	libraryRepo *repository.LibraryRepository
+	fileRepo    *repository.FileRepository
+}
+
+func NewLibraryServiceServer(libraryRepo *repository.LibraryRepository, fileRepo *repository.FileRepository) *LibraryServiceServer {
+	return &LibraryServiceServer{
+		libraryRepo: libraryRepo,
+		fileRepo:    fileRepo,
+	}
+}
+
+func (s *LibraryServiceServer) GetCategories(ctx context.Context, req *pb.GetCategoriesRequest) (*pb.CategoryListResponse, error) {
+	categories, err := s.libraryRepo.GetAllCategories(ctx)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "get categories failed: %v", err)
+	}
+
+	pbCategories := make([]*pb.LibraryCategory, 0, len(categories))
+	for _, cat := range categories {
+		pbCategories = append(pbCategories, &pb.LibraryCategory{
+			Id:        cat.ID,
+			Name:      cat.Name,
+			Icon:      cat.Icon,
+			SortOrder: int32(cat.SortOrder),
+		})
+	}
+
+	return &pb.CategoryListResponse{Categories: pbCategories}, nil
+}
+
+func (s *LibraryServiceServer) GetFiles(ctx context.Context, req *pb.GetLibraryFilesRequest) (*pb.LibraryFileListResponse, error) {
+	files, total, err := s.libraryRepo.GetFilesByCategory(ctx, req.CategoryId, int(req.Page), int(req.PageSize))
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "get files failed: %v", err)
+	}
+
+	pbFiles := make([]*pb.LibraryFile, 0, len(files))
+	for _, file := range files {
+		pbFile := &pb.LibraryFile{
+			Id:            file.ID,
+			CategoryId:    file.CategoryID,
+			FileId:        file.FileID,
+			Title:         file.Title,
+			Description:   file.Description,
+			PageCount:     int32(file.PageCount),
+			DownloadCount: int32(file.DownloadCount),
+		}
+		if file.File != nil {
+			pbFile.File = &pb.FileInfo{
+				Id:       file.File.ID,
+				FileName: file.File.FileName,
+				FilePath: file.File.FilePath,
+				FileType: file.File.FileType,
+				FileSize: file.File.FileSize,
+			}
+		}
+		pbFiles = append(pbFiles, pbFile)
+	}
+
+	return &pb.LibraryFileListResponse{
+		Files: pbFiles,
+		Total: int32(total),
+	}, nil
+}
+
+func (s *LibraryServiceServer) UploadFile(stream pb.LibraryService_UploadFileServer) error {
+	// Placeholder for streaming upload
+	return status.Errorf(codes.Unimplemented, "streaming upload not implemented")
+}
+
+func (s *LibraryServiceServer) DeleteFile(ctx context.Context, req *pb.DeleteLibraryFileRequest) (*pb.Empty, error) {
+	err := s.libraryRepo.DeleteFile(ctx, req.LibraryFileId)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "delete file failed: %v", err)
+	}
+
+	return &pb.Empty{}, nil
+}