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fileops.go
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fileops.go
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package app
import (
"encoding/csv"
"fmt"
"io"
"os"
"path/filepath"
"time"
"github.com/andrewmolyuk/pixar"
"github.com/andrewmolyuk/pixar/log"
"github.com/andrewmolyuk/pixar/semaphore"
"github.com/evanoberholster/imagemeta"
)
func moveFile(file string, folder string, s *semaphore.Semaphore) {
log.Debug("Moving file: \"%s\" to folder: \"%s\"", file, folder)
defer s.Release()
failIfFileExists(file, folder)
createFolder(folder)
err := os.Rename(file, folder+"/"+filepath.Base(file))
if err != nil {
s.Acquire()
copyFile(file, folder, s)
err = deleteFile(file)
if err != nil {
log.Error("Error deleting file: %s. Error: %s", file, err)
}
}
}
func deleteFile(file string) error {
err := os.RemoveAll(file)
if err != nil {
return err
}
return nil
}
func copyFile(file string, folder string, s *semaphore.Semaphore) {
log.Debug("Copying file: \"%s\" to folder: \"%s\"", file, folder)
defer s.Release()
failIfFileExists(file, folder)
createFolder(folder)
src, err := os.Open(file)
if err != nil {
log.Error("Error opening file: %s. Error: %s", file, err)
}
defer closeFile(src)
dst, err := os.Create(folder + "/" + filepath.Base(file))
if err != nil {
log.Error("Error creating file: %s. Error: %s", folder+"/"+filepath.Base(file), err)
}
defer closeFile(dst)
_, err = io.Copy(dst, src)
if err != nil {
log.Error("Error copying file: %s. Error: %s", file, err)
}
}
func failIfFileExists(file string, folder string) {
if _, err := os.Stat(folder + "/" + filepath.Base(file)); err == nil {
log.Error("File: \"%s\" already exists in folder: \"%s\"", file, folder)
}
}
func closeFile(file io.Closer) {
err := file.Close()
if err != nil {
log.Error("Error closing file: %s. Error: %s", file, err)
}
}
func createFolder(folder string) {
log.Debug("Creating folder: \"%s\"", folder)
err := os.MkdirAll(folder, 0o755)
if err != nil {
log.Error("Error creating folder: %s. Error:", folder, err)
}
}
func isFolderExists(folder string) error {
f, err := os.Stat(folder)
if err != nil {
return err
}
if !f.IsDir() {
return fmt.Errorf("folder: \"%s\" is not a folder", folder)
}
return nil
}
func getFileModificationDate(file string) time.Time {
f, err := os.Stat(file)
if err != nil {
return time.Time{}
}
return f.ModTime()
}
func getFileExifCreateDate(file string) time.Time {
f, err := os.Open(file)
defer closeFile(f)
if err != nil {
return time.Time{}
}
exif, err := imagemeta.Decode(f)
if err != nil {
return time.Time{}
}
return exif.CreateDate()
}
func writeActionsToCsv(file string, actions []pixar.FileAction) error {
zeroTime := time.Time{}
log.Debug("Writing actions to CSV file: \"%s\"", file)
createFolder(filepath.Dir(file))
f, err := os.Create(file)
if err != nil {
return err
}
defer func(file io.Closer) {
err := file.Close()
if err != nil {
log.Error("Error closing file: %s", file)
}
}(f)
writer := csv.NewWriter(f)
defer writer.Flush()
err = writer.Write([]string{"file", "destination_folder", "modification_date", "exif_create_date", "action"})
if err != nil {
return err
}
for _, a := range actions {
md := ""
if a.ModificationDate != zeroTime {
md = a.ModificationDate.String()
}
ecd := ""
if a.ExifCreateDate != zeroTime {
ecd = a.ExifCreateDate.String()
}
err := writer.Write([]string{a.File, a.Destination, md, ecd, a.Action.String()})
if err != nil {
return err
}
}
return nil
}