145 lines
2.8 KiB
Go
145 lines
2.8 KiB
Go
package file
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import (
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"io"
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"os"
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"time"
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"github.com/google/uuid"
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)
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type Service struct {
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repo *Repository
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storageDir string
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}
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func NewService(r *Repository, storageDir string) *Service {
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if _, err := os.Stat(storageDir); os.IsNotExist(err) {
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os.MkdirAll(storageDir, os.ModePerm)
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}
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return &Service{repo: r, storageDir: storageDir}
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}
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func (s *Service) UploadFile(filename string, data io.Reader, deleteAfterDownload bool, expiresAfter time.Duration) (*FileRecord, error) {
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folderID := uuid.NewString()
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folderPath := s.storageDir + "/" + folderID
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if err := os.MkdirAll(folderPath, os.ModePerm); err != nil {
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return nil, err
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}
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path := folderPath + "/" + filename
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out, err := os.Create(path)
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if err != nil {
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return nil, err
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}
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defer out.Close()
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size, err := io.Copy(out, data)
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if err != nil {
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return nil, err
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}
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f := &FileRecord{
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ID: folderID,
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DeletionID: uuid.NewString(),
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Filename: filename,
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Path: path,
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Size: size,
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CreatedAt: time.Now(),
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ExpiresAt: time.Now().Add(expiresAfter),
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DeleteAfterDownload: deleteAfterDownload,
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}
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if err := s.repo.Create(f); err != nil {
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return nil, err
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}
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return f, nil
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}
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// DownloadFile Download a file
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func (s *Service) DownloadFile(id string) (*FileRecord, error) {
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f, err := s.repo.GetByID(id)
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if err != nil {
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return nil, err
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}
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if f.Deleted || time.Now().After(f.ExpiresAt) {
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return nil, ErrFileNotFound
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}
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_ = s.repo.IncrementDownload(f)
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if f.DeleteAfterDownload {
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_ = s.repo.MarkDeleted(f)
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}
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return f, nil
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}
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func (s *Service) DeleteFileByID(id string) (*FileRecord, error) {
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f, err := s.repo.GetByID(id)
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if err != nil {
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return nil, err
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}
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if f.Deleted {
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return nil, ErrFileNotFound
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}
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if err := s.repo.MarkDeleted(f); err != nil {
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return nil, err
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}
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return f, nil
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}
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func (s *Service) DeleteFileByDeletionID(delID string) (*FileRecord, error) {
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f, err := s.repo.GetByDeletionID(delID)
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if err != nil {
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return nil, err
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}
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if f.Deleted {
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return nil, ErrFileNotFound
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}
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if err := s.repo.MarkDeleted(f); err != nil {
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return nil, err
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}
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return f, nil
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}
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func (s *Service) ForceDelete(id string) (*FileRecord, error) {
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f, err := s.repo.GetByID(id)
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if err != nil {
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return nil, err
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}
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if err := os.RemoveAll(s.storageDir + "/" + f.ID); err != nil {
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return nil, err
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}
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if err := s.repo.Delete(f); err != nil {
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return nil, err
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}
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return f, nil
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}
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func (s *Service) GetPaginatedFiles(limit, offset int) ([]FileRecord, int, error) {
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return s.repo.GetPaginated(limit, offset)
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}
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func (s *Service) GetFileByID(id string) (*FileRecord, error) {
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return s.repo.GetByID(id)
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}
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func (s *Service) GetFileByDeletionID(delID string) (*FileRecord, error) {
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return s.repo.GetByDeletionID(delID)
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}
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