googlephotos: make the start year configurable - fixes #3630

backend/googlephotos/googlephotos.go

@@ -134,14 +134,20 @@ rclone mount needs to know the size of files in advance of reading
 them, so setting this flag when using rclone mount is recommended if
 you want to read the media.`,
 			Advanced: true,
+		}, {
+			Name:     "start_year",
+			Default:  2000,
+			Help:     `Year limits the photos to be downloaded to those which are uploaded after the given year`,
+			Advanced: true,
 		}},
 	})
 }
 
 // Options defines the configuration for this backend
 type Options struct {
-	ReadOnly bool `config:"read_only"`
+	ReadOnly  bool `config:"read_only"`
-	ReadSize bool `config:"read_size"`
+	ReadSize  bool `config:"read_size"`
+	StartYear int  `config:"start_year"`
 }
 
 // Fs represents a remote storage server
@@ -202,6 +208,11 @@ func (f *Fs) dirTime() time.Time {
 	return f.startTime
 }
 
+// startYear returns the start year
+func (f *Fs) startYear() int {
+	return f.opt.StartYear
+}
+
 // retryErrorCodes is a slice of error codes that we will retry
 var retryErrorCodes = []int{
 	429, // Too Many Requests.

backend/googlephotos/pattern.go

@@ -23,6 +23,7 @@ type lister interface {
 	listAlbums(ctx context.Context, shared bool) (all *albums, err error)
 	listUploads(ctx context.Context, dir string) (entries fs.DirEntries, err error)
 	dirTime() time.Time
+	startYear() int
 }
 
 // dirPattern describes a single directory pattern
@@ -222,11 +223,10 @@ func (ds dirPatterns) match(root string, itemPath string, isFile bool) (match []
 	return nil, "", nil
 }
 
-// Return the years from 2000 to today
+// Return the years from startYear to today
-// FIXME make configurable?
 func years(ctx context.Context, f lister, prefix string, match []string) (entries fs.DirEntries, err error) {
 	currentYear := f.dirTime().Year()
-	for year := 2000; year <= currentYear; year++ {
+	for year := f.startYear(); year <= currentYear; year++ {
 		entries = append(entries, fs.NewDir(prefix+fmt.Sprint(year), f.dirTime()))
 	}
 	return entries, nil

backend/googlephotos/pattern_test.go

@@ -59,6 +59,11 @@ func (f *testLister) dirTime() time.Time {
 	return startTime
 }
 
+// mock startYear for testing
+func (f *testLister) startYear() int {
+	return 2000
+}
+
 func TestPatternMatch(t *testing.T) {
 	for testNumber, test := range []struct {
 		// input