Add thumbnailing for photo grids

diary.go

@@ -283,16 +283,17 @@ func computeCalendarWidget(diaryRootFS, diaryRootURL, fsPath string, depth int)
 
 // diaryPhoto is a photo file whose name starts with a YYYY-MM-DD date prefix.
 type diaryPhoto struct {
-	Date time.Time
-	Name string
-	URL  string
+	Date     time.Time
+	Name     string
+	URL      string
+	ThumbURL string
 }
 
 type diaryMonthSummary struct {
-	ID         string
-	Name       string
-	URL        string
-	PhotoCount int
+	ID     string
+	Name   string
+	URL    string
+	Photos []diaryPhoto
 }
 
 type diaryDaySection struct {
@@ -376,10 +377,16 @@ func yearPhotos(yearFsPath, yearURLPath string) []diaryPhoto {
 		if err != nil {
 			continue
 		}
+		photoURL := path.Join(yearURLPath, url.PathEscape(name))
+		thumb := photoURL
+		if hasThumbnail(name) {
+			thumb = thumbURL(photoURL, 300)
+		}
 		photos = append(photos, diaryPhoto{
-			Date: t,
-			Name: name,
-			URL:  path.Join(yearURLPath, url.PathEscape(name)),
+			Date:     t,
+			Name:     name,
+			URL:      photoURL,
+			ThumbURL: thumb,
 		})
 	}
 	return photos
@@ -408,18 +415,18 @@ func renderDiaryYear(fsPath, urlPath string) template.HTML {
 		if err != nil || monthNum < 1 || monthNum > 12 {
 			continue
 		}
-		count := 0
+		var monthPhotos []diaryPhoto
 		for _, p := range photos {
 			if p.Date.Year() == year && int(p.Date.Month()) == monthNum {
-				count++
+				monthPhotos = append(monthPhotos, p)
 			}
 		}
 		monthDate := time.Date(year, time.Month(monthNum), 1, 0, 0, 0, 0, time.UTC)
 		months = append(months, diaryMonthSummary{
-			ID:         monthDate.Format("2006-01"),
-			Name:       monthDate.Format("January 2006"),
-			URL:        path.Join(urlPath, e.Name()) + "/",
-			PhotoCount: count,
+			ID:     monthDate.Format("2006-01"),
+			Name:   fmt.Sprintf("%s %d", germanMonths[monthDate.Month()], year),
+			URL:    path.Join(urlPath, e.Name()) + "/",
+			Photos: monthPhotos,
 		})
 	}