rainview api integration

ui/src/lib/rainViewer.ts

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+import { WeatherMaps } from '@lib/rainViewer.types.ts';
+
+const weatherMapsUrl = 'https://api.rainviewer.com/public/weather-maps.json';
+
+async function getWeatherMaps(): Promise<WeatherMaps | undefined> {
+  const response = await fetch(`${weatherMapsUrl}`, {
+    method: 'GET',
+  });
+  if (response?.status === 200) {
+    return response.json();
+  } else {
+    return undefined;
+  }
+}
+
+// const rainViewerUrl = 'https://tilecache.rainviewer.com/v2/radar/1744386000/256/{z}/{x}/{y}/2/1_1.png';
+// const rainViewerUrl = 'https://tilecache.rainviewer.com/v2/radar/1744386000/256/10/290/391/2/1_1.png'
+// https://api.rainviewer.com/public/weather-maps.json
+export async function getWeatherMapUrl(): Promise<string | null> {
+  const weatherMaps = await getWeatherMaps();
+  if (weatherMaps != undefined) {
+    let url = weatherMaps.host;
+    let latest = "";
+    if (weatherMaps.radar.nowcast.length > 0) {
+      latest = weatherMaps.radar.nowcast[weatherMaps.radar.nowcast.length - 1].path;
+    } else if (weatherMaps.radar.past.length > 0) {
+      latest = weatherMaps.radar.past[weatherMaps.radar.past.length - 1].path;
+    } else {
+      return null;
+    }
+    url += latest + "/256/{z}/{x}/{y}/2/1_1.png";
+    return url;
+  } else {
+    return null;
+  }
+}

ui/src/lib/rainViewer.types.ts

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+export interface WeatherMaps {
+  version: string;
+  generated: number;
+  host: string;
+  radar: RadarObject;
+  satellite: SatelliteObject;
+}
+
+export interface RadarObject {
+  past: FrameObject[];
+  nowcast: FrameObject[];
+}
+
+export interface SatelliteObject {
+  infrared: FrameObject[];
+}
+
+export interface FrameObject {
+  time: number;
+  path: string;
+}