added indices holdings tokens endpoint action

Author: HarshGautam7101

components/token_metrics/actions/get-indices-holdings/get-indices-holdings.mjs

@@ -0,0 +1,54 @@
+import tokenMetrics from "../../token_metrics.app.mjs";
+import { ENDPOINTS, FILTER_DEFINITIONS } from "../../common/constants.mjs";
+import { buildParams, generateFilterSummary } from "../../common/utils.mjs";
+
+const endpoint = ENDPOINTS.INDICES_HOLDINGS;
+
+export default {
+  key: "token_metrics-get-indices-holdings",
+  name: "Get Indices Holdings",
+  description: `${endpoint.description}. [See the documentation](https://developers.tokenmetrics.com/reference/indices-holdings)`,
+  version: "0.0.1",
+  type: "action",
+  props: {
+    tokenMetrics,
+    // Filter props based on endpoint configuration and API documentation
+    id: {
+      ...FILTER_DEFINITIONS.id,
+      description: "ID of the index. Example: 1",
+    },
+  },
+  async run({ $ }) {
+    // Build parameters using utility function
+    const params = buildParams(this, endpoint.filters);
+
+    try {
+      const response = await this.tokenMetrics.getIndicesHoldings({
+        $,
+        params,
+      });
+
+      // Generate summary using utility function
+      const filterSummary = generateFilterSummary(this, endpoint.filters);
+      
+      // Use $ context for export
+      if ($ && $.export) {
+        const dataLength = response.data?.length || 0;
+        $.export("$summary", `Successfully retrieved holdings for index with ${dataLength} tokens${filterSummary}`);
+      }
+      
+      return response;
+    } catch (error) {
+      // Enhanced error handling
+      const errorMessage = error.response?.data?.message || error.message || "An error occurred";
+      const statusCode = error.response?.status;
+      
+      if ($ && $.export) {
+        $.export("$summary", `Error: ${errorMessage}`);
+      }
+      
+      // Throw a more descriptive error
+      throw new Error(`Token Metrics API Error (${statusCode || 'Unknown'}): ${errorMessage}`);
+    }
+  },
+};

components/token_metrics/common/constants.mjs

@@ -205,6 +205,13 @@ export const ENDPOINTS = {
       "indices_type",
     ],
   },
+  INDICES_HOLDINGS: {
+    path: "/indices-holdings",
+    description: "This endpoint returns the current holdings of the given Index, along with their respective weight in %",
+    filters: [
+      "id",
+    ],
+  },
 };
 
 // Common filter definitions that can be reused across endpoints
@@ -334,6 +341,12 @@ export const FILTER_DEFINITIONS = {
       },
     ],
   },
+  id: {
+    type: "integer",
+    label: "ID",
+    description: "ID of the index. Example: 1",
+    optional: false,
+  },
 };
 
 // Common error messages

components/token_metrics/token_metrics.app.mjs

@@ -281,5 +281,15 @@ export default {
         params,
       });
     },
+    async getIndicesHoldings({
+      $ = this,
+      params = {},
+    }) {
+      return this.makeApiCall({
+        $,
+        endpoint: "/indices-holdings",
+        params,
+      });
+    },
   },
 };