stats: /stats/countries comparison and /stats/countries/[iso3] profiles (Curaçao via World Bank), more WB indicators, Countries + Curaçao cards, nav/sitemap/start links

src/lib/server/stats.ts

@@ -25,6 +25,8 @@ export type StatSeries = {
 	region: string | null;
 	sourceId: string;
 	points: StatPoint[];
+	/** First forecast year (IMF WEO vintages); points from that year on are projections. */
+	forecastFrom?: number;
 };
 export type SeriesRequest = {
 	id: string;
@@ -48,8 +50,10 @@ export async function loadSeries(
 			freq: string;
 			region_code: string | null;
 			source_id: string;
+			forecast_from: string | null;
 		}[]
-	>`select series_id, title, unit, freq, region_code, source_id from stats.series
+	>`select series_id, title, unit, freq, region_code, source_id, meta->>'forecastFrom' as forecast_from
+		from stats.series
 		where series_id = any(${reqs.map((r) => r.id)})`;
 	const out: Record<string, StatSeries> = {};
 	await Promise.all(
@@ -72,6 +76,7 @@ export async function loadSeries(
 				freq: m.freq,
 				region: m.region_code,
 				sourceId: m.source_id,
+				...(m.forecast_from ? { forecastFrom: Number(m.forecast_from) } : {}),
 				points: rows.map((r) => [r.period, Math.round(r.value * 1e6) / 1e6])
 			};
 		})
@@ -181,3 +186,15 @@ export async function loadCbsCross(
 	}
 	return [...byCode.values()].sort((a, b) => a.code.localeCompare(b.code));
 }
+
+export type LatestValue = { period: string; value: number };
+/** Latest observed (non-forecast) value per series; missing ids are absent. */
+export async function loadLatest(ids: string[]): Promise<Record<string, LatestValue>> {
+	if (!ids.length) return {};
+	const rows = await client<{ series_id: string; period: string; value: number }[]>`
+		select distinct on (series_id) series_id, to_char(period, 'YYYY-MM-DD') as period, value
+		from stats.obs
+		where series_id = any(${ids}) and value is not null and status is distinct from 'forecast'
+		order by series_id, period desc`;
+	return Object.fromEntries(rows.map((r) => [r.series_id, { period: r.period, value: r.value }]));
+}