func (self *FileService) GetFile(fileDisplay *display.FileDisplay) error {
// make model from display
file := models.File{
ShortUrl: fileDisplay.ShortUrl,
}
// get file from db
err := self.fileRepository.GetFile(&file)
if err != nil {
return err
}
// now that we have file delete it from db
self.fileRepository.DeleteFile(&file)
// verify that file isn't to old
elapsed := int(time.Now().Sub(file.Created).Seconds())
if elapsed > file.TTL {
// to old delete file
fmt.Println("file to old, delete from s3!")
_, err := GetS3Service().DeleteObject(&s3.DeleteObjectInput{
Bucket: aws.String(config.S3Bucket),
Key: aws.String(config.S3Key + "/" + file.S3Path),
})
if err != nil {
fmt.Println("---ERROR---", err.Error())
}
return errors.New("File has expired")
}
// create get request
req, _ := GetS3Service().GetObjectRequest(&s3.GetObjectInput{
Bucket: aws.String(config.S3Bucket),
Key: aws.String(config.S3Key + "/" + file.S3Path),
})
url, err := req.Presign(15 * time.Minute)
if err != nil {
log.Println("--ERROR---", err.Error())
return err
}
// add needed data to display
fileDisplay.DownloadUrl = url
fileDisplay.Salt = file.Salt
fileDisplay.IV = file.IV
fileDisplay.AData = file.AData
return nil
}
