initial version of streba 2

src/routes/activities/[id]/+page.server.ts

@@ -0,0 +1,54 @@
+import { error, redirect } from '@sveltejs/kit';
+import { db, deleteActivity, getActivity } from '$lib/server/db';
+import { haversine } from '$lib/server/gpx';
+import type { Actions, PageServerLoad } from './$types';
+import type { PeakRow } from '$lib/server/db';
+
+export const load: PageServerLoad = ({ params }) => {
+	const activity = getActivity(Number(params.id));
+	if (!activity) error(404, 'Activity not found');
+
+	const points = JSON.parse(activity.points) as {
+		lat: number;
+		lon: number;
+		ele: number | null;
+		t: number | null;
+	}[];
+
+	const latlngs = points.map((p) => [p.lat, p.lon] as [number, number]);
+
+	// cumulative-distance elevation profile
+	const profile: { d: number; ele: number }[] = [];
+	let dist = 0;
+	for (let i = 0; i < points.length; i++) {
+		if (i > 0) {
+			dist += haversine(points[i - 1].lat, points[i - 1].lon, points[i].lat, points[i].lon);
+		}
+		if (points[i].ele !== null) profile.push({ d: dist, ele: points[i].ele! });
+	}
+
+	const bagged = db
+		.prepare('SELECT * FROM peaks WHERE activity_id = ?')
+		.all(activity.id) as PeakRow[];
+
+	return {
+		activity: { ...activity, points: undefined },
+		latlngs,
+		profile,
+		bagged: bagged.map((p) => ({
+			id: p.id,
+			name: p.name,
+			elevation_m: p.elevation_m,
+			lat: p.lat,
+			lon: p.lon,
+			climbed: true
+		}))
+	};
+};
+
+export const actions: Actions = {
+	delete: async ({ params }) => {
+		deleteActivity(Number(params.id));
+		redirect(303, '/activities');
+	}
+};