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https://github.com/MBombeck/HealthLog.git
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Marc-André Bombeck
e61fe42bd1
The detail surface at /insights/workouts/[id] gains a real heart-rate curve, effort zones, an aspect-true GPS route, and per-kilometre splits — all read from data already stored, no new integration, no migration. - HR curve: one server path with strict provenance — stored WorkoutSamples series first, a raw-PULSE window reconstruction second (quality-gated so sparse data hides rather than lies), nothing third. Adaptive bucketing keeps on-screen density constant across a 20-minute HIIT and a 6-hour ride; a min/max envelope surfaces intervals. - Effort zones: five %HRmax bands via the Tanaka HRmax, with a device's own reported time-in-zone winning when present. Descriptive only. - GPS route: self-rendered inline SVG with an equirectangular cos(midLat) longitude correction (fixes the ~40% horizontal stretch), aspect-clamped viewBox, RDP downsampling, start/end markers, and an optional elevation profile. Nothing leaves the origin — no map tiles. - Per-km splits and a GPX export, both derived client/server-side from the geometry already on the payload. - The endpoint extends additively (hrSeries, zones, splits, sportContext, a reserved insight seam) behind an opt-in compact=1 param that drops the raw sample/timestamp blobs for the web client; without the param the response is unchanged. - Every data-less section now hides instead of rendering an empty card; the growing detail component is split into a workout-detail/ directory. - List rows flag which sessions open into a rich detail.
85 lines
2.7 KiB
TypeScript
85 lines
2.7 KiB
TypeScript
/**
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* Per-kilometre splits from a workout's route geometry + per-sample
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* timestamps. Pure; computed server-side so the web client keeps
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* dropping the raw `sampleTimestamps` blob under `compact=1` (the
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* derived splits survive, the 20k-point timestamp array does not) and
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* iOS gets the same resolved figures — server-authoritative parity.
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*
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* Only meaningful for distance/pace sports; the caller gates the sport.
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* A workout without aligned timestamps (or under one full km) yields
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* `null` and the caller hides the splits card.
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*/
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import {
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extractLonLat,
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haversineMeters,
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type RouteCoordinate,
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} from "@/lib/workouts/route-svg";
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export interface WorkoutSplit {
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/** 1-based kilometre index. */
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km: number;
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/** Time to cover this kilometre, seconds. */
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durationSec: number;
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/** Pace over the kilometre, seconds per km (== durationSec here). */
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paceSecPerKm: number;
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}
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const KM = 1000;
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/**
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* Compute whole-kilometre splits. Walks the polyline accumulating
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* haversine distance; at each km boundary the crossing time is linearly
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* interpolated between the two bounding samples by distance fraction,
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* so a split boundary that falls mid-segment is timed honestly.
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*/
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export function computeSplits(
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coordinates: readonly RouteCoordinate[],
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timestamps: readonly string[] | null | undefined,
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): WorkoutSplit[] | null {
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if (!timestamps || timestamps.length !== coordinates.length) return null;
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// Keep coordinate/timestamp pairs that are both well-formed.
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const pts: Array<{ lon: number; lat: number; tMs: number }> = [];
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coordinates.forEach((c, i) => {
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const [lonLat] = extractLonLat([c]);
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if (!lonLat) return;
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const tMs = Date.parse(timestamps[i] ?? "");
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if (!Number.isFinite(tMs)) return;
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pts.push({ lon: lonLat[0], lat: lonLat[1], tMs });
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});
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if (pts.length < 2) return null;
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const splits: WorkoutSplit[] = [];
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let cumulative = 0;
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let nextBoundary = KM;
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let prevBoundaryTimeMs = pts[0].tMs;
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for (let i = 1; i < pts.length; i++) {
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const a = pts[i - 1];
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const b = pts[i];
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const segDist = haversineMeters(a.lon, a.lat, b.lon, b.lat);
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if (segDist <= 0) continue;
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const segStart = cumulative;
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cumulative += segDist;
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// A single long segment can straddle several km boundaries.
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while (cumulative >= nextBoundary) {
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const frac = (nextBoundary - segStart) / segDist;
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const boundaryTimeMs = a.tMs + (b.tMs - a.tMs) * frac;
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const durationSec = Math.max(
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0,
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Math.round((boundaryTimeMs - prevBoundaryTimeMs) / 1000),
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);
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splits.push({
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km: splits.length + 1,
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durationSec,
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paceSecPerKm: durationSec,
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});
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prevBoundaryTimeMs = boundaryTimeMs;
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nextBoundary += KM;
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}
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}
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return splits.length > 0 ? splits : null;
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}
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