init

lib/garmin/wellness.ts

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+import type { GarminConnect } from "garmin-connect";
+
+export type DayWellness = {
+  date: string;
+  sleepDurationMin?: number;
+  sleepScore?: number;
+  deepSleepMin?: number;
+  remSleepMin?: number;
+  avgOvernightHrv?: number;
+  hrvStatus?: string;
+  restingHr?: number;
+  bodyBatteryChange?: number;
+};
+
+export async function fetchRecentWellness(
+  client: GarminConnect,
+  days: number
+): Promise<DayWellness[]> {
+  const today = new Date();
+
+  const dates = Array.from({ length: days }, (_, i) => {
+    const d = new Date(today);
+    d.setDate(d.getDate() - i);
+    return d;
+  });
+
+  const results = await Promise.allSettled(
+    dates.map((date) => client.getSleepData(date))
+  );
+
+  return results
+    .map((result, i) => {
+      const dateStr = dates[i].toISOString().slice(0, 10);
+      if (result.status === "rejected" || !result.value?.dailySleepDTO) {
+        return { date: dateStr };
+      }
+      const { value: data } = result;
+      const dto = data.dailySleepDTO;
+      return {
+        date: dateStr,
+        sleepDurationMin: dto.sleepTimeSeconds ? Math.round(dto.sleepTimeSeconds / 60) : undefined,
+        sleepScore: dto.sleepScores?.overall?.value ?? undefined,
+        deepSleepMin: dto.deepSleepSeconds ? Math.round(dto.deepSleepSeconds / 60) : undefined,
+        remSleepMin: dto.remSleepSeconds ? Math.round(dto.remSleepSeconds / 60) : undefined,
+        avgOvernightHrv: data.avgOvernightHrv || undefined,
+        hrvStatus: data.hrvStatus || undefined,
+        restingHr: data.restingHeartRate || undefined,
+        bodyBatteryChange: typeof data.bodyBatteryChange === "number" ? data.bodyBatteryChange : undefined,
+      };
+    })
+    .sort((a, b) => a.date.localeCompare(b.date));
+}