modular meteograms

src/lib/services/weather.ts

@@ -165,6 +165,8 @@ export interface WeekForecastParams extends WeatherLocation, WeatherUnitParams {
 	model?: string;
 	forecast_days?: number;
 	past_days?: number;
+	/** Hourly API variables to request; defaults to the full core set */
+	hourlyVariables?: string[];
 }
 
 export interface WeekHourlyData {
@@ -178,6 +180,19 @@ export interface WeekHourlyData {
 	relative_humidity_2m: number[];
 	apparent_temperature: number[];
 	dew_point_2m: number[];
+	// Additional popular variables available for the customizable meteograms
+	wind_gusts_10m: number[];
+	pressure_msl: number[];
+	surface_pressure: number[];
+	rain: number[];
+	showers: number[];
+	snowfall: number[];
+	cloud_cover_low: number[];
+	cloud_cover_mid: number[];
+	cloud_cover_high: number[];
+	uv_index: number[];
+	visibility: number[];
+	cape: number[];
 }
 
 export interface WeekDailyData {
@@ -259,6 +274,9 @@ export interface EnsembleForecastResult {
 
 // ─── Week Forecast Fetch ────────────────────────────────────────────────────────
 
+// Fallback set when the caller does not specify which hourly variables it
+// needs. Callers normally pass an explicit list so only shown variables are
+// requested.
 const WEEK_HOURLY_VARS = [
 	'temperature_2m',
 	'precipitation',
@@ -294,10 +312,16 @@ export async function fetchWeekForecast(params: WeekForecastParams): Promise<Wee
 	const pastDays = params.past_days ?? 0;
 	const modelParam = params.model && params.model !== 'best_match' ? params.model : undefined;
 
+	// Request only the variables the caller needs; fall back to the core set.
+	const hourlyVars =
+		params.hourlyVariables && params.hourlyVariables.length > 0
+			? [...new Set(params.hourlyVariables)]
+			: [...WEEK_HOURLY_VARS];
+
 	const apiParams: Record<string, string | number | undefined> = {
 		latitude: params.latitude,
 		longitude: params.longitude,
-		hourly: WEEK_HOURLY_VARS.join(','),
+		hourly: hourlyVars.join(','),
 		daily: WEEK_DAILY_VARS.join(','),
 		temperature_unit: params.temperature_unit ?? 'celsius',
 		wind_speed_unit: params.wind_speed_unit ?? 'kmh',
@@ -328,17 +352,38 @@ export async function fetchWeekForecast(params: WeekForecastParams): Promise<Wee
 	const hourlyTimestamps = getTimestamps(hourlyBlock);
 	const hourlyDates = hourlyTimestamps.map((t) => new Date(t));
 
+	// Values come back in the requested order; index them by API name so
+	// variables that were not requested resolve to empty arrays.
+	const byName: Record<string, number[]> = {};
+	hourlyVars.forEach((name, i) => {
+		const variable = hourlyBlock.variables(i);
+		byName[name] = variable ? getValues(variable) : [];
+	});
+	const g = (name: string): number[] => byName[name] ?? [];
+
 	const hourly: WeekHourlyData = {
-		temperature_2m: getValues(hourlyBlock.variables(0)!),
-		precipitation: getValues(hourlyBlock.variables(1)!),
-		precipitation_probability: getValues(hourlyBlock.variables(2)!),
-		weather_code: getValues(hourlyBlock.variables(3)!),
-		windspeed_10m: getValues(hourlyBlock.variables(4)!),
-		winddirection_10m: getValues(hourlyBlock.variables(5)!),
-		cloud_cover: getValues(hourlyBlock.variables(6)!),
-		relative_humidity_2m: getValues(hourlyBlock.variables(7)!),
-		apparent_temperature: getValues(hourlyBlock.variables(8)!),
-		dew_point_2m: getValues(hourlyBlock.variables(9)!)
+		temperature_2m: g('temperature_2m'),
+		precipitation: g('precipitation'),
+		precipitation_probability: g('precipitation_probability'),
+		weather_code: g('weather_code'),
+		windspeed_10m: g('wind_speed_10m'),
+		winddirection_10m: g('wind_direction_10m'),
+		cloud_cover: g('cloud_cover'),
+		relative_humidity_2m: g('relative_humidity_2m'),
+		apparent_temperature: g('apparent_temperature'),
+		dew_point_2m: g('dew_point_2m'),
+		wind_gusts_10m: g('wind_gusts_10m'),
+		pressure_msl: g('pressure_msl'),
+		surface_pressure: g('surface_pressure'),
+		rain: g('rain'),
+		showers: g('showers'),
+		snowfall: g('snowfall'),
+		cloud_cover_low: g('cloud_cover_low'),
+		cloud_cover_mid: g('cloud_cover_mid'),
+		cloud_cover_high: g('cloud_cover_high'),
+		uv_index: g('uv_index'),
+		visibility: g('visibility'),
+		cape: g('cape')
 	};
 
 	// Daily: variables are in the same order as WEEK_DAILY_VARS