--- /dev/null
+MIT License
+
+Copyright (c) 2023 Thomas Karpiniec
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- /dev/null
+package main
+
+import (
+ "bufio"
+ "errors"
+ "flag"
+ "log"
+ "os"
+ "os/signal"
+ "path"
+ "strconv"
+ "strings"
+ "syscall"
+ "time"
+
+ "github.com/fsnotify/fsnotify"
+)
+
+var sourcePath string
+var targetPath string
+
+func getSeenPath() string {
+ cacheDir, err := os.UserCacheDir()
+ if err != nil {
+ log.Fatal(err, "No cache directory available")
+ }
+ return path.Join(cacheDir, "photosorter", "seen")
+}
+
+func prepareStateDir() {
+ parent := path.Dir(getSeenPath())
+ log.Println("Storing seen cache in:", parent)
+ os.MkdirAll(parent, 0700)
+}
+
+func getSeen() map[string]bool {
+ seenFiles := make(map[string]bool)
+ file, err := os.Open(getSeenPath())
+ if err != nil {
+ return seenFiles
+ }
+ defer file.Close()
+ scanner := bufio.NewScanner(file)
+ for scanner.Scan() {
+ seenFiles[scanner.Text()] = true
+ }
+ return seenFiles
+}
+
+func setSeen(seenFiles map[string]bool) {
+ file, err := os.Create(getSeenPath())
+ if err != nil {
+ return
+ }
+ defer file.Close()
+ w := bufio.NewWriter(file)
+ for key := range seenFiles {
+ w.WriteString(key)
+ w.WriteString("\n")
+ }
+ w.Flush()
+}
+
+func processFile(name string, modified time.Time) {
+ sourceFile := path.Join(sourcePath, name)
+ targetDir := path.Join(targetPath, strconv.Itoa(modified.Year()))
+ targetFile := path.Join(targetDir, name)
+ if _, err := os.Stat(targetFile); errors.Is(err, os.ErrNotExist) {
+ log.Println("Copying src:", sourceFile, "target:", targetFile)
+ r, err := os.Open(sourceFile)
+ if err != nil {
+ return
+ }
+ defer r.Close()
+ os.MkdirAll(targetDir, 0700)
+ w, err := os.Create(targetFile)
+ if err != nil {
+ return
+ }
+ defer w.Close()
+ _, err = w.ReadFrom(r)
+ if err != nil {
+ // Try to clean up for next time
+ os.Remove(targetFile)
+ }
+ } else {
+ log.Println("Skipping because it exists, src:", sourceFile, "target:", targetFile)
+ }
+}
+
+func doSort() {
+ log.Println("Starting sort...")
+ didProcess := false
+ seenFiles := getSeen()
+ newSeenFiles := make(map[string]bool)
+ files, err := os.ReadDir(sourcePath)
+ if err != nil {
+ log.Fatal(err)
+ }
+ for _, file := range files {
+ if strings.HasPrefix(file.Name(), ".") {
+ continue
+ }
+ if !file.Type().IsRegular() {
+ continue
+ }
+ info, err := file.Info()
+ if err != nil {
+ continue
+ }
+ newSeenFiles[file.Name()] = true
+ if seenFiles[file.Name()] {
+ continue
+ }
+ processFile(file.Name(), info.ModTime())
+ didProcess = true
+ }
+ setSeen(newSeenFiles)
+ if didProcess {
+ log.Println("Sort complete")
+ } else {
+ log.Println("Sort complete (no changes)")
+ }
+}
+
+func sortWorker(changeTimes chan time.Time) {
+ // Handle signals cleanly so we avoid stopping mid-execution
+ stopping := make(chan os.Signal)
+ signal.Notify(stopping, syscall.SIGTERM, syscall.SIGHUP)
+
+ // Initial sort to catch any changes before startup
+ lastRun := time.Now()
+ doSort()
+ for {
+ select {
+ case <-stopping:
+ log.Println("Stopping due to signal")
+ os.Exit(0)
+ case t := <-changeTimes:
+ if t.After(lastRun) {
+ log.Println("Source directory did change")
+ lastRun = time.Now()
+ doSort()
+ }
+ }
+ }
+}
+
+func watcher(changeTimes chan time.Time) {
+ w, err := fsnotify.NewWatcher()
+ if err != nil {
+ log.Fatal(err)
+ }
+ defer w.Close()
+ w.Add(sourcePath)
+ for range w.Events {
+ changeTimes <- time.Now()
+ }
+}
+
+func main() {
+ const req = "REQUIRED"
+ flag.StringVar(&sourcePath, "s", req, "source directory where photos are uploaded")
+ flag.StringVar(&targetPath, "t", req, "target directory in which year directories are created")
+ flag.Parse()
+ if sourcePath == req || targetPath == req {
+ log.Println("Source and Target paths must both be provided")
+ os.Exit(1)
+ }
+ prepareStateDir()
+ changeTimes := make(chan time.Time, 1024)
+ go sortWorker(changeTimes)
+ watcher(changeTimes)
+}
projects / photosorter / commitdiff