feat: move nav bar to the side (#6)

Co-authored-by: terraputix <terraputix@mailbox.org>
Reviewed-on: useweb/ombrella#6

src/lib/utils/location.ts

@@ -0,0 +1,103 @@
+import { error, redirect } from '@sveltejs/kit';
+
+import { type GeoLocation, storedLocation } from '$lib/stores/settings';
+
+import { geoLocationNameToRoute } from '$lib/utils/meteo';
+
+export function buildLocationRoute(location: GeoLocation): string {
+	const locationRoute = geoLocationNameToRoute(location.name);
+	if (location.population && location.population > 543000) {
+		return locationRoute;
+	}
+	return locationRoute + '_' + location.id;
+}
+
+interface ResolveLocationOptions {
+	urlLocation: string;
+	routePrefix: string;
+	event: {
+		fetch: typeof fetch;
+		url: URL;
+	};
+}
+
+export async function resolveLocationFromRoute({
+	urlLocation,
+	routePrefix,
+	event
+}: ResolveLocationOptions): Promise<GeoLocation> {
+	let location: GeoLocation;
+
+	if (urlLocation.includes('N') && urlLocation.includes('E')) {
+		const parts = urlLocation.split(/N|E/);
+		const latitude = parseFloat(parts[0]);
+		const longitude = parseFloat(parts[1]);
+
+		location = {
+			id: 0,
+			name: `${latitude}N° ${longitude}E°`,
+			latitude,
+			longitude,
+			elevation: 0,
+			feature_code: 'COORD',
+			country_code: undefined,
+			admin1_id: undefined,
+			admin3_id: undefined,
+			admin4_id: undefined,
+			timezone: 'UTC',
+			population: undefined,
+			postcodes: undefined,
+			country_id: undefined,
+			country: undefined,
+			admin1: undefined,
+			admin3: undefined,
+			admin4: undefined
+		};
+	} else {
+		let urlLocationName: string;
+		let urlLocationId: string | undefined;
+
+		if (urlLocation.includes('_')) {
+			const split = urlLocation.split('_');
+			urlLocationName = split[0];
+			urlLocationId = split[1];
+		} else if (/^\d+$/.test(urlLocation)) {
+			urlLocationName = '';
+			urlLocationId = urlLocation;
+		} else {
+			urlLocationName = urlLocation;
+			urlLocationId = undefined;
+		}
+
+		if (urlLocationId) {
+			const res = await event.fetch(
+				`https://geocoding-api.open-meteo.com/v1/get?id=${urlLocationId}`
+			);
+			location = await res.json();
+		} else {
+			const res = await event.fetch(
+				`https://geocoding-api.open-meteo.com/v1/search?name=${urlLocationName}&count=1&language=en&format=json`
+			);
+			const geocodingResponse = await res.json();
+			if (geocodingResponse.results) {
+				location = geocodingResponse.results[0];
+			} else {
+				error(404, 'Location not found');
+			}
+		}
+
+		const locationRoute = geoLocationNameToRoute(location.name);
+		const canonicalSuffix =
+			location.population && location.population > 543000
+				? locationRoute
+				: locationRoute + '_' + location.id;
+		const canonicalPath = `${routePrefix}${canonicalSuffix}`;
+
+		if (event.url.pathname !== canonicalPath) {
+			throw redirect(303, canonicalPath);
+		}
+	}
+
+	storedLocation.set(location);
+	return location;
+}