Implement simple file moving

main.go

@@ -3,6 +3,8 @@ package main
 import (
 	"flag"
 	"fmt"
+	"os"
+	"path/filepath"
 	"regexp"
 	"time"
 
@@ -54,13 +56,40 @@ func main() {
 	files := flag.Args()
 
 	for _, file := range files {
-		logger.Info("processing file: %s", file)
+		filelog := logger.Default.WithPrefix(fmt.Sprintf("file=%q", file))
+		filelog.Info("processing file")
 		date, err := parseDate(file, parsers)
 		if err != nil {
-			logger.Error("error parsing date: %s", err)
+			filelog.Error("error parsing date: %s", err)
 			continue
 		}
-		logger.Info("date: %s", date)
+		filelog.Info("date: %s", date)
+		
+		datedir := fmt.Sprintf("%04d-%02d-%02d", date.Year(), date.Month(), date.Day())
+		dest := filepath.Join(datedir, file)
+		filelog.Info("dest: %s", dest)
+		err = os.MkdirAll(datedir, 0755)
+		if err != nil {
+			filelog.Error("error creating directory: %s", err)
+			continue
+		}
+		// Make sure file doesn't exist
+		destfile, err := os.Stat(dest)
+		if err == nil {
+			filelog.Info("dest file already exists: %s", destfile.Name())
+			continue
+		} else {
+			if !os.IsNotExist(err) {
+				filelog.Error("error checking dest file: %s", err)
+				continue
+			}
+		}
+		err = os.Rename(file, dest)
+		if err != nil {
+			filelog.Error("error renaming file: %s", err)
+			continue
+		}
+		filelog.Info("moved to %q", dest)
 	}
 }