98 lines
2.9 KiB
Go
98 lines
2.9 KiB
Go
// monorepo/cloud/backend/internal/maplefile/service/file/get.go
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package file
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import (
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"context"
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"go.uber.org/zap"
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"github.com/gocql/gocql"
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"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/config"
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"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/config/constants"
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dom_collection "codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/collection"
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uc_filemetadata "codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/usecase/filemetadata"
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"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/pkg/httperror"
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)
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type GetFileService interface {
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Execute(ctx context.Context, fileID gocql.UUID) (*FileResponseDTO, error)
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}
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type getFileServiceImpl struct {
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config *config.Configuration
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logger *zap.Logger
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collectionRepo dom_collection.CollectionRepository
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getMetadataUseCase uc_filemetadata.GetFileMetadataUseCase
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}
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func NewGetFileService(
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config *config.Configuration,
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logger *zap.Logger,
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collectionRepo dom_collection.CollectionRepository,
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getMetadataUseCase uc_filemetadata.GetFileMetadataUseCase,
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) GetFileService {
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logger = logger.Named("GetFileService")
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return &getFileServiceImpl{
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config: config,
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logger: logger,
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collectionRepo: collectionRepo,
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getMetadataUseCase: getMetadataUseCase,
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}
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}
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func (svc *getFileServiceImpl) Execute(ctx context.Context, fileID gocql.UUID) (*FileResponseDTO, error) {
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//
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// STEP 1: Validation
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//
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if fileID.String() == "" {
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svc.logger.Warn("Empty file ID provided")
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return nil, httperror.NewForBadRequestWithSingleField("file_id", "File ID is required")
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}
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//
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// STEP 2: Get user ID from context
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//
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userID, ok := ctx.Value(constants.SessionUserID).(gocql.UUID)
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if !ok {
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svc.logger.Error("Failed getting user ID from context")
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return nil, httperror.NewForInternalServerErrorWithSingleField("message", "Authentication context error")
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}
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//
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// STEP 3: Get file metadata
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//
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file, err := svc.getMetadataUseCase.Execute(fileID)
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if err != nil {
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svc.logger.Error("Failed to get file metadata",
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zap.Any("error", err),
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zap.Any("file_id", fileID))
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return nil, err
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}
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//
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// STEP 4: Check if user has access to the file's collection
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//
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hasAccess, err := svc.collectionRepo.CheckAccess(ctx, file.CollectionID, userID, dom_collection.CollectionPermissionReadOnly)
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if err != nil {
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svc.logger.Error("Failed to check collection access",
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zap.Any("error", err),
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zap.Any("collection_id", file.CollectionID),
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zap.Any("user_id", userID))
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return nil, err
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}
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if !hasAccess {
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svc.logger.Warn("Unauthorized file access attempt",
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zap.Any("user_id", userID),
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zap.Any("file_id", fileID),
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zap.Any("collection_id", file.CollectionID))
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return nil, httperror.NewForForbiddenWithSingleField("message", "You don't have permission to access this file")
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}
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//
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// STEP 5: Map domain model to response DTO
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//
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response := mapFileToDTO(file)
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return response, nil
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}
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