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package main
import (
"crypto/sha256"
"fmt"
"io"
"os"
"github.com/barasher/go-exiftool"
)
type File struct {
Path string
SHA256 string
Time string
}
type Storage interface {
Upsert(file *File) error
LoadByPath(path string) *File
}
func NewFile(path string) *File {
return &File{Path: path}
}
func (file *File) CalculateSHA256() error {
f, err := os.Open(file.Path)
if err != nil {
return err
}
defer f.Close()
h := sha256.New()
if _, err := io.Copy(h, f); err != nil {
return err
}
file.SHA256 = fmt.Sprintf("%x", h.Sum(nil))
return nil
}
func (file *File) SetTime() error {
et, err := exiftool.NewExiftool()
if err != nil {
return err
}
defer et.Close()
fileInfos := et.ExtractMetadata(file.Path)
for _, fileInfo := range fileInfos {
if fileInfo.Err != nil {
fmt.Printf("Error concerning %v: %v\n", fileInfo.File, fileInfo.Err)
continue
}
v, ok := fileInfo.Fields["DateTimeOriginal"]
if ok {
t, _ := v.(string)
file.Time = t
}
}
return nil
}
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