fix: use IMGW Hybrid for current weather

lib/imgw-current-api.ts

@@ -0,0 +1,77 @@
+import { toNumber } from "@/lib/weather-utils";
+import type { ImgwCurrentWeather, RawImgwHybridWeatherResponse, RawImgwHybridWeatherRow } from "@/types/imgw-current";
+
+function toCelsius(value: unknown) {
+  const temperature = toNumber(value);
+  if (temperature === null) return null;
+  return temperature > 150 ? temperature - 273.15 : temperature;
+}
+
+function toHectopascals(value: unknown) {
+  const pressure = toNumber(value);
+  if (pressure === null) return null;
+  return pressure > 2_000 ? pressure / 100 : pressure;
+}
+
+function normalizeDate(value: unknown) {
+  if (typeof value !== "string") return null;
+  const date = new Date(value);
+  return Number.isNaN(date.getTime()) ? null : date.toISOString();
+}
+
+function getWeatherCode(iconCode: unknown) {
+  if (typeof iconCode !== "string") return null;
+  const match = iconCode.match(/z(\d{2})/i);
+  return match ? Number(match[1]) : null;
+}
+
+function getCondition(weatherCode: number | null, rainfall10m: number | null, snowfall10m: number | null) {
+  if (weatherCode !== null && weatherCode >= 95) return "thunderstorm" as const;
+  if ((snowfall10m ?? 0) > 0) return "snow" as const;
+  if ((rainfall10m ?? 0) > 0) return "rain" as const;
+  return null;
+}
+
+export function normalizeImgwCurrentWeather(payload: RawImgwHybridWeatherResponse): ImgwCurrentWeather | null {
+  if (!payload.data?.Valid || !Array.isArray(payload.data.Data)) return null;
+
+  const row = payload.data.Data
+    .filter((candidate): candidate is RawImgwHybridWeatherRow => {
+      if (!candidate || typeof candidate !== "object") return false;
+      return candidate.Type === "Type_Ten_Minutes"
+        && typeof candidate.MODEL === "string"
+        && candidate.MODEL.includes("AROME")
+        && normalizeDate(candidate.Date) !== null;
+    })
+    .sort((left, right) => String(right.Date).localeCompare(String(left.Date)))[0];
+  if (!row) return null;
+
+  const measuredAt = normalizeDate(row.Date);
+  if (!measuredAt) return null;
+  const rainfall10m = toNumber(row.Rain10m);
+  const snowfall10m = toNumber(row.Snow10m);
+  const weatherCode = getWeatherCode(row.Icon10);
+
+  return {
+    measuredAt,
+    temperature: toCelsius(row.Temperature),
+    feelsLike: toCelsius(row.Chill),
+    windSpeed: toNumber(row.Wind_Speed),
+    windDirection: toNumber(row.Wind_Dir),
+    humidity: toNumber(row.Humidity),
+    pressure: toHectopascals(row.PressureMSL),
+    precipitation10m: toNumber(row.Precipitation10m),
+    rainfall10m,
+    snowfall10m,
+    cloudCover: toNumber(row.Cloud),
+    weatherCode,
+    condition: getCondition(weatherCode, rainfall10m, snowfall10m),
+  };
+}
+
+export async function fetchImgwCurrentWeather(latitude: number, longitude: number, signal?: AbortSignal) {
+  const params = new URLSearchParams({ latitude: String(latitude), longitude: String(longitude) });
+  const response = await fetch(`/api/imgw-current?${params}`, { signal });
+  if (!response.ok) throw new Error("Nie udało się pobrać bieżącej analizy IMGW Hybrid.");
+  return normalizeImgwCurrentWeather(await response.json() as RawImgwHybridWeatherResponse);
+}