From 620687f8f344b8e5877dada7010a04d43b590f25 Mon Sep 17 00:00:00 2001
From: Alexander Bocken <alexander@bocken.org>
Date: Thu, 19 Mar 2026 09:14:45 +0100
Subject: [PATCH] fitness: limit workouts-per-week chart to 10 weeks and trim
 empty leading weeks

Reduce the chart window from 12 to 10 weeks and trim leading weeks
with zero workouts so the chart starts from the first week with data.
---
 .../api/fitness/stats/profile/+server.ts      | 23 +++++++++++++------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/src/routes/api/fitness/stats/profile/+server.ts b/src/routes/api/fitness/stats/profile/+server.ts
index 000c137e..05633862 100644
--- a/src/routes/api/fitness/stats/profile/+server.ts
+++ b/src/routes/api/fitness/stats/profile/+server.ts
@@ -16,8 +16,8 @@ export const GET: RequestHandler = async ({ locals }) => {
 	await dbConnect();
 	console.timeEnd('[stats/profile] dbConnect');
 
-	const twelveWeeksAgo = new Date();
-	twelveWeeksAgo.setDate(twelveWeeksAgo.getDate() - 84);
+	const tenWeeksAgo = new Date();
+	tenWeeksAgo.setDate(tenWeeksAgo.getDate() - 70);
 
 	console.time('[stats/profile] countDocuments');
 	const totalWorkouts = await WorkoutSession.countDocuments({ createdBy: user.nickname });
@@ -28,7 +28,7 @@ export const GET: RequestHandler = async ({ locals }) => {
 		{
 			$match: {
 				createdBy: user.nickname,
-				startTime: { $gte: twelveWeeksAgo }
+				startTime: { $gte: tenWeeksAgo }
 			}
 		},
 		{
@@ -62,18 +62,27 @@ export const GET: RequestHandler = async ({ locals }) => {
 		weekMap.set(`${item._id.year}-${item._id.week}`, item.count);
 	}
 
-	const workoutsChart: { labels: string[]; data: number[] } = { labels: [], data: [] };
+	const allLabels: string[] = [];
+	const allData: number[] = [];
 	const now = new Date();
-	for (let i = 11; i >= 0; i--) {
+	for (let i = 9; i >= 0; i--) {
 		const d = new Date(now);
 		d.setDate(d.getDate() - i * 7);
 		const year = getISOWeekYear(d);
 		const week = getISOWeek(d);
 		const key = `${year}-${week}`;
-		workoutsChart.labels.push(`W${week}`);
-		workoutsChart.data.push(weekMap.get(key) ?? 0);
+		allLabels.push(`W${week}`);
+		allData.push(weekMap.get(key) ?? 0);
 	}
 
+	// Trim leading empty weeks, but always keep from first week with data
+	let firstNonZero = allData.findIndex((v) => v > 0);
+	if (firstNonZero === -1) firstNonZero = allData.length - 1; // show at least current week
+	const workoutsChart = {
+		labels: allLabels.slice(firstNonZero),
+		data: allData.slice(firstNonZero)
+	};
+
 	// Build chart-ready weight data with SMA ± 1 std dev confidence band
 	const weightChart: {
 		labels: string[];