138 lines
2.9 KiB
Go
138 lines
2.9 KiB
Go
package metadata
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import (
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"context"
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"encoding/hex"
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"errors"
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"time"
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"git.lumeweb.com/LumeWeb/portal/db/models"
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"go.uber.org/fx"
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"gorm.io/gorm"
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)
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var ErrNotFound = gorm.ErrRecordNotFound
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type UploadMetadata struct {
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UserID uint `json:"userId"`
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Hash []byte `json:"hash"`
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MimeType string `json:"mimeType"`
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Protocol string `json:"protocol"`
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UploaderIP string `json:"uploaderIp"`
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Size uint64 `json:"size"`
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Created time.Time `json:"created"`
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}
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func (u UploadMetadata) IsEmpty() bool {
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if u.UserID != 0 || u.MimeType != "" || u.Protocol != "" || u.UploaderIP != "" || u.Size != 0 {
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return false
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}
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if !u.Created.IsZero() {
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return false
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}
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if len(u.Hash) != 0 {
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return false
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}
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return true
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}
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var Module = fx.Module("metadata",
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fx.Provide(
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NewMetadataService,
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fx.As(new(MetadataService)),
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),
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)
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type MetadataService interface {
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SaveUpload(ctx context.Context, metadata UploadMetadata) error
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GetUpload(ctx context.Context, objectHash []byte) (UploadMetadata, error)
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DeleteUpload(ctx context.Context, objectHash []byte) error
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}
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type MetadataServiceDefault struct {
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db *gorm.DB
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}
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type MetadataServiceParams struct {
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fx.In
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Db *gorm.DB
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}
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func NewMetadataService(params MetadataServiceParams) *MetadataServiceDefault {
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return &MetadataServiceDefault{
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db: params.Db,
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}
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}
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func (m *MetadataServiceDefault) SaveUpload(ctx context.Context, metadata UploadMetadata) error {
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var upload models.Upload
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upload.Hash = hex.EncodeToString(metadata.Hash)
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ret := m.db.WithContext(ctx).Model(&models.Upload{}).Where(&upload).First(&upload)
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if ret.Error != nil {
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if !errors.Is(ret.Error, gorm.ErrRecordNotFound) {
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return ret.Error
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}
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}
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if ret.RowsAffected > 0 {
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return nil
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}
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upload.UserID = metadata.UserID
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upload.MimeType = metadata.MimeType
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upload.Protocol = metadata.Protocol
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upload.UploaderIP = metadata.UploaderIP
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upload.Size = metadata.Size
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return m.db.Save(&metadata).Error
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}
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func (m *MetadataServiceDefault) GetUpload(ctx context.Context, objectHash []byte) (UploadMetadata, error) {
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var upload models.Upload
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upload.Hash = hex.EncodeToString(objectHash)
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ret := m.db.WithContext(ctx).Model(&models.Upload{}).Where(&upload).First(&upload)
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if ret.Error != nil {
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if errors.Is(ret.Error, gorm.ErrRecordNotFound) {
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return UploadMetadata{}, ret.Error
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}
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}
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hash, err := hex.DecodeString(upload.Hash)
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if err != nil {
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return UploadMetadata{}, err
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}
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return UploadMetadata{
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UserID: upload.UserID,
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Hash: hash,
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MimeType: upload.MimeType,
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Protocol: upload.Protocol,
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UploaderIP: upload.UploaderIP,
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Size: upload.Size,
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}, nil
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}
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func (m *MetadataServiceDefault) DeleteUpload(ctx context.Context, objectHash []byte) error {
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var upload models.Upload
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upload.Hash = hex.EncodeToString(objectHash)
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ret := m.db.WithContext(ctx).Model(&models.Upload{}).Where(&upload).First(&upload)
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if ret.Error != nil {
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return ret.Error
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}
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return m.db.Delete(&upload).Error
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}
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