Export button functionality

ui/src/components/Admin/AirportTablePanel.tsx

@@ -112,7 +112,23 @@ export default function AirportTablePanel({ setShowModal, setAirport }: { setSho
           </Space>
           <Space mr={'sm'}>
             <PanelButton color={'blue'} onClick={async () => {
-              
+              const airports = [];
+              let page = 1;
+              let totalPages = 1;
+              do {
+                const response = await getAirports({ limit: 1000, page });
+                airports.push(...response.data);
+                totalPages = response.meta.pages;
+                page++;
+              } while (page <= totalPages);
+              if (airports && airports.length > 0) {
+                const element = document.createElement("a");
+                const file = new Blob([JSON.stringify(airports)], {type: 'text/plain'});
+                element.href = URL.createObjectURL(file);
+                element.download = "airports.json";
+                document.body.appendChild(element); // Required for this to work in FireFox
+                element.click();
+              }
             }}>
               Export
             </PanelButton>

ui/src/components/Metars/MapTiles.tsx

@@ -56,7 +56,8 @@ export default function MapTiles() {
       limit: zoom < 4 ? 200 : 100,
       page: 1
     });
-    const { data: metars } = await getMetars(airportData.map((a) => a.icao));
+    const airports = airportData.filter((airport) => airport.has_metar);
+    const { data: metars } = await getMetars(airports.map((a) => a.icao));
     metars.forEach((metar) => {
       airportData.forEach((airport) => {
         if (metar.station_id == airport.icao) {
@@ -69,7 +70,9 @@ export default function MapTiles() {
 
   function metarIcon(airport: Airport) {
     let iconUrl = '/icons/unkn.svg';
-    if (airport.latest_metar?.flight_category == 'VFR') {
+    if (!airport.has_metar) {
+      iconUrl = '/icons/nometar.svg';
+    } else if (airport.latest_metar?.flight_category == 'VFR') {
       iconUrl = '/icons/vfr.svg';
     }  else if (airport.latest_metar?.flight_category == 'MVFR') {
       iconUrl = '/icons/mvfr.svg';