package crop import ( "fmt" "path/filepath" "path" "github.com/photoprism/photoprism/pkg/clean" "github.com/photoprism/photoprism/pkg/fs" ) // FromCache returns the crop file name if cached. func FromCache(hash, area string, size Size, thumbPath string) (fileName string, err error) { fileName, err = FileName(hash, area, size.Width, size.Height, thumbPath) if err != nil { return fileName, err } if fs.FileExists(fileName) { return fileName, nil } return fileName, fmt.Errorf("%s not found", filepath.Base(fileName)) } // FileName returns the crop file name based on cache path, size, and area. func FileName(hash, area string, width, height int, thumbPath string) (fileName string, err error) { if len(hash) < 4 { return "", fmt.Errorf("crop: invalid file hash %s", clean.Log(hash)) } if len(thumbPath) < 1 { return "", fmt.Errorf("crop: cache path missing") } if width < 1 || height < 1 || width > 2048 || height > 2048 { return "", fmt.Errorf("crop: invalid size %dx%d", width, height) } fileName = path.Join(thumbPath, hash[0:1], hash[1:2], hash[2:3], fmt.Sprintf("%s_%dx%d_crop_%s%s", hash, width, height, area, fs.ExtJPEG)) return fileName, nil }