refactor(router): one WeekStatsData mapper for the dashboard page and week-widget fragment

internal/router/frontend.go

@@ -468,16 +468,8 @@ func registerFrontendRoutes(cfg *Config) {
 			weekSvc, weekErr := cfg.StatisticsService.ThisWeek(c.Request().Context(),
 				pgtype.UUID{Bytes: userUUID, Valid: true}, user.Timezone, weekScope)
 			if weekErr == nil {
-				week = &templates.WeekStatsData{
+				wk := weekStatsData(weekSvc, libRes.LibraryID)
-					WeekMinutes:   weekSvc.WeekMinutes,
+				week = &wk
-					WeekPages:     weekSvc.WeekPages,
-					WeekSessions:  weekSvc.WeekSessions,
-					WeekBooks:     weekSvc.WeekBooks,
-					PrevMinutes:   weekSvc.PrevMinutes,
-					ActiveToday:   weekSvc.ActiveToday,
-					CurrentStreak: weekSvc.CurrentStreak,
-					LibraryID:     libRes.LibraryID,
-				}
 			} else {
 				log.Printf("ThisWeek widget failed: %v", weekErr)
 			}
@@ -816,16 +808,8 @@ func registerFrontendRoutes(cfg *Config) {
 				}
 			}
 		}
-		err = templates.DashboardWeekWidget(templates.WeekStatsData{
+		err = templates.DashboardWeekWidget(weekStatsData(weekSvc, libRes.LibraryID),
-			WeekMinutes:   weekSvc.WeekMinutes,
+			widgetLibType).Render(c.Request().Context(), &buf)
-			WeekPages:     weekSvc.WeekPages,
-			WeekSessions:  weekSvc.WeekSessions,
-			WeekBooks:     weekSvc.WeekBooks,
-			PrevMinutes:   weekSvc.PrevMinutes,
-			ActiveToday:   weekSvc.ActiveToday,
-			CurrentStreak: weekSvc.CurrentStreak,
-			LibraryID:     libRes.LibraryID,
-		}, widgetLibType).Render(c.Request().Context(), &buf)
 		if err != nil {
 			return err
 		}
@@ -1680,3 +1664,19 @@ func (cfg *Config) GetHealth(c *echo.Context) error {
 		},
 	})
 }
+
+// weekStatsData maps the statistics weekly aggregate to the widget's
+// template shape (shared by the dashboard page and the HTMX
+// week-widget fragment).
+func weekStatsData(weekSvc services.WeekSummaryStats, libraryID string) templates.WeekStatsData {
+	return templates.WeekStatsData{
+		WeekMinutes:   weekSvc.WeekMinutes,
+		WeekPages:     weekSvc.WeekPages,
+		WeekSessions:  weekSvc.WeekSessions,
+		WeekBooks:     weekSvc.WeekBooks,
+		PrevMinutes:   weekSvc.PrevMinutes,
+		ActiveToday:   weekSvc.ActiveToday,
+		CurrentStreak: weekSvc.CurrentStreak,
+		LibraryID:     libraryID,
+	}
+}