Adds updateCommunityLinks script

scripts/updateCommunityLinks.ts

@@ -0,0 +1,105 @@
+import { config } from "dotenv";
+import { resolve } from "path";
+import { docClient, getAllCities } from "./common";
+import { UpdateCommand, UpdateCommandOutput } from "@aws-sdk/lib-dynamodb";
+import { City } from "@/app/_db/schema";
+
+config({ path: resolve(process.cwd(), ".env.local") });
+
+const center = "37.7792588,-122.4193286";
+
+async function main() {
+  const cities = await getAllCities();
+
+  // Find cities around center
+  const closeCities = cities.filter((c) => {
+    const [lat, lon] = c.id.split(",").map(parseFloat);
+    const [centerLat, centerLon] = center.split(",").map(parseFloat);
+    if (
+      lat === undefined ||
+      lon === undefined ||
+      centerLat === undefined ||
+      centerLon === undefined
+    )
+      return false;
+    return areCoordinatesNearby(lat, lon, centerLat, centerLon, 100);
+  });
+
+  console.log(closeCities.map((c) => c.id));
+  console.log(closeCities.map((c) => c.name));
+
+  const citiesError: { city: City; res: UpdateCommandOutput }[] = [];
+  for (const city of closeCities) {
+    const updateCommand = new UpdateCommand({
+      TableName: process.env.DYNAMODB_TABLE!,
+      Key: {
+        entityType: "CITY",
+        entityId: city.id,
+      },
+      UpdateExpression: "SET communityLinks = :links",
+      ExpressionAttributeValues: {
+        ":links": [
+          // ...city.communityLinks ?? [], // TO add if we don't want to override
+          {
+            link: "https://discord.gg/Cvb6Sse7YK",
+            name: "meet.hn Bay Area Discord",
+          },
+        ],
+      },
+    });
+
+    const updateResponse = await docClient.send(updateCommand);
+    if (updateResponse.$metadata.httpStatusCode !== 200) {
+      citiesError.push({ city, res: updateResponse });
+    }
+  }
+
+  console.log("errors:", citiesError);
+}
+
+main();
+
+/**
+ * From Claude 3.5 Haiku:
+ *
+ * Checks if two geographical coordinates are within a specified distance of each other.
+ *
+ * @param {number} lat1 - Latitude of the first coordinate
+ * @param {number} lon1 - Longitude of the first coordinate
+ * @param {number} lat2 - Latitude of the second coordinate
+ * @param {number} lon2 - Longitude of the second coordinate
+ * @param {number} [maxDistanceKm=1] - Maximum distance in kilometers to consider coordinates "nearby" (default is 1 km)
+ * @returns {boolean} - True if coordinates are within maxDistanceKm, false otherwise
+ */
+function areCoordinatesNearby(
+  lat1: number,
+  lon1: number,
+  lat2: number,
+  lon2: number,
+  maxDistanceKm: number = 50,
+): boolean {
+  // Earth's radius in kilometers
+  const R = 6371;
+
+  // Convert latitude and longitude to radians
+  const phi1 = (lat1 * Math.PI) / 180;
+  const phi2 = (lat2 * Math.PI) / 180;
+  const deltaLat = ((lat2 - lat1) * Math.PI) / 180;
+  const deltaLon = ((lon2 - lon1) * Math.PI) / 180;
+
+  // Haversine formula
+  const a =
+    Math.sin(deltaLat / 2) * Math.sin(deltaLat / 2) +
+    Math.cos(phi1) *
+      Math.cos(phi2) *
+      Math.sin(deltaLon / 2) *
+      Math.sin(deltaLon / 2);
+
+  const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+
+  // Distance in kilometers
+  const distance = R * c;
+
+  // Check if distance is within maxDistanceKm
+  return distance <= maxDistanceKm;
+}