Expo app: native front end for health.rehbock.xyz

Login (HTTP Basic, token in SecureStore) + Today, Blood, Sleep, Train,
Body, Mind, DNA screens ported from the PWA at /app/. All data is
fetched live from health.rehbock.xyz; nothing is stored on device
beyond the auth token.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/lib/shape.ts

@@ -0,0 +1,94 @@
+import type {
+  BiomarkersResponse, MarkerGroup, Night, SleepApiResponse, SleepCycleExport,
+  Week, Workout,
+} from './types';
+
+export function shapeSleep(api: SleepApiResponse, sc: SleepCycleExport): Night[] {
+  const byDate = new Map<string, Night>();
+  (sc.sessions || []).forEach((r) => {
+    const o: Record<string, any> = Object.fromEntries(sc.fields.map((f, i) => [f, r[i]]));
+    const date = String(o.end || '').slice(0, 10);
+    if (!date) return;
+    byDate.set(date, {
+      date,
+      total: o.inbed_s || o.asleep_s,
+      asleep: o.asleep_s,
+      deep: o.deep_s,
+      rem: o.rem_s,
+      light: o.light_s || (o.deep_s || o.rem_s ? 0 : o.asleep_s),
+      awake: o.awake_s,
+      quality: o.quality,
+      hrv: null,
+      hr: null,
+      src: 'Sleep Cycle',
+    });
+  });
+  (api.sessions || []).forEach((s) => {
+    const date = s.ended_at.slice(0, 10);
+    byDate.set(date, {
+      date,
+      total: s.total_seconds,
+      asleep: s.sleep_seconds,
+      deep: s.deep_seconds,
+      rem: s.rem_seconds,
+      light: s.light_seconds,
+      awake: s.awake_seconds,
+      quality: null,
+      hrv: s.avg_hrv,
+      hr: s.avg_hr,
+      src: 'Eight Sleep',
+    });
+  });
+  return [...byDate.values()].sort((a, b) => (a.date < b.date ? -1 : 1));
+}
+
+export function workoutVolume(w: Workout): { vol: number; sets: number } {
+  let vol = 0;
+  let sets = 0;
+  (w.exercises || []).forEach((ex) =>
+    (ex.sets || []).forEach((s) => {
+      sets++;
+      if (s.weight_kg && s.reps) vol += s.weight_kg * s.reps;
+    }),
+  );
+  return { vol, sets };
+}
+
+export function weekStart(d: string): string {
+  const dt = new Date(d);
+  const day = (dt.getDay() + 6) % 7;
+  dt.setDate(dt.getDate() - day);
+  return dt.toISOString().slice(0, 10);
+}
+
+export function shapeWeeks(workouts: Workout[], n: number): Week[] {
+  const map = new Map<string, Week>();
+  workouts.forEach((w) => {
+    const k = weekStart(w.start_time);
+    if (!map.has(k)) map.set(k, { start: k, vol: 0, count: 0, sets: 0 });
+    const e = map.get(k)!;
+    const { vol, sets } = workoutVolume(w);
+    e.vol += vol;
+    e.count++;
+    e.sets += sets;
+  });
+  return [...map.values()].sort((a, b) => (a.start < b.start ? -1 : 1)).slice(-n);
+}
+
+export function shapeBiomarkers(bm: BiomarkersResponse): MarkerGroup[] {
+  const groups = new Map<string, typeof bm.biomarkers>();
+  bm.biomarkers.forEach((b) => {
+    if (!groups.has(b.name)) groups.set(b.name, []);
+    groups.get(b.name)!.push(b);
+  });
+  const out: MarkerGroup[] = [];
+  groups.forEach((hist, name) => {
+    hist.sort((a, b) => (a.collected < b.collected ? -1 : 1));
+    const latest = hist[hist.length - 1];
+    const series = hist
+      .filter((h) => h.unit === latest.unit && h.value_num != null)
+      .map((h) => ({ d: h.collected, v: h.value_num! }));
+    out.push({ name, latest, series, panel: latest.panel });
+  });
+  return out.sort((a, b) => a.name.localeCompare(b.name));
+}