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package worker
import (
"context"
"git.sr.ht/~gabrielgio/img/pkg/components/media"
"git.sr.ht/~gabrielgio/img/pkg/fileop"
)
type (
EXIFScanner struct {
repository media.Repository
}
)
var _ ListProcessor[*media.Media] = &EXIFScanner{}
func NewEXIFScanner(repository media.Repository) *EXIFScanner {
return &EXIFScanner{
repository: repository,
}
}
func (e *EXIFScanner) Query(ctx context.Context) ([]*media.Media, error) {
medias, err := e.repository.GetEmptyEXIF(ctx, &media.Pagination{
Page: 0,
Size: 100,
})
if err != nil {
return nil, err
}
return medias, nil
}
func wrapReadExif(ctx context.Context, path string) (*media.MediaEXIF, error) {
c := make(chan *media.MediaEXIF)
e := make(chan error)
go func() {
defer close(c)
defer close(e)
newExif, err := fileop.ReadExif(path)
if err != nil {
e <- err
} else {
c <- newExif
}
}()
select {
case <-ctx.Done():
return nil, ctx.Err()
case m := <-c:
return m, nil
case err := <-e:
return nil, err
}
}
func (e *EXIFScanner) Process(ctx context.Context, m *media.Media) error {
newExif, err := wrapReadExif(ctx, m.Path)
if err != nil {
return err
}
return e.repository.CreateEXIF(ctx, m.ID, newExif)
}
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