search functionality, kinda hacky

webapp/src/services/apiService.ts

@@ -54,3 +54,51 @@ export const getALPRs = async (boundingBox: BoundingBox) => {
   const response = await apiService.get(`/alpr?${queryParams.toString()}`);
   return response.data;
 }
+
+export const geocodeQuery = async (query: string, currentLocation: any) => {
+  const encodedQuery = encodeURIComponent(query);
+  const results = (await apiService.get(`/geocode?query=${encodedQuery}`)).data;
+
+  function findNearestResult(results: any, currentLocation: any) {
+    console.log(currentLocation, results);
+    let nearestResult = results[0];
+    let nearestDistance = Number.MAX_VALUE;
+    for (const result of results) {
+      const distance = Math.sqrt(
+        Math.pow(result.lat - currentLocation.lat, 2) +
+        Math.pow(result.lon - currentLocation.lng, 2)
+      );
+      if (distance < nearestDistance) {
+        nearestResult = result;
+        nearestDistance = distance;
+      }
+    }
+    return nearestResult;
+  }
+
+  if (!results.length) return null;
+
+  const cityStatePattern = /(.+),\s*(\w{2})/;
+  const postalCodePattern = /\d{5}/;
+
+  if (cityStatePattern.test(query)) {
+    console.debug("cityStatePattern");
+    const cityStateResults = results.filter((result: any) => 
+      ["city", "town", "village", "hamlet", "suburb", "quarter", "neighbourhood", "borough"].includes(result.addresstype)
+    );
+    if (cityStateResults.length) {
+      return findNearestResult(cityStateResults, currentLocation);
+    }
+  }
+
+  if (postalCodePattern.test(query)) {
+    console.debug("postalCodePattern");
+    const postalCodeResults = results.filter((result: any) => result.addresstype === "postcode");
+    if (postalCodeResults.length) {
+      return findNearestResult(postalCodeResults, currentLocation);
+    }
+  }
+
+  console.debug("defaultPattern");
+  return findNearestResult(results, currentLocation);
+}