Retrieve associated conferences.js

const axios = require('axios');
exports.main = async (event, callback) => {

  const hs_object_id = event.inputFields['hs_object_id'];
  
  let data = JSON.stringify({
    "filterGroups": [
      {
        "filters": [
          {
            "propertyName": "conference_array",
            "operator": "HAS_PROPERTY"
          },
          {
            "propertyName": "associations.deal",
            "operator": "EQ",
            "value": hs_object_id
          }
        ]
      }
    ],
    "properties": ["conference_array"]
  });

  let config = {
    method: 'post',
    maxBodyLength: Infinity,
    url: 'https://api.hubapi.com/crm/v3/objects/contacts/search',
    headers: { 
      'Content-Type': 'application/json', 
      'Authorization': 'Bearer TEST'
    },
    data : data
  };

  try {
    const response = await axios.request(config);
    const results = response.data.results;

    // Merge and deduplicate conference_arrays
    let mergedArray = [];
    const seen = new Set();

    results.forEach(contact => {
      const rawArray = contact.properties?.conference_array;
      if (!rawArray) return;

      let parsedArray;
      try {
        parsedArray = JSON.parse(rawArray); // in case it's a JSON string
      } catch (e) {
        parsedArray = rawArray; // assume it's already an object/array
      }

      if (Array.isArray(parsedArray)) {
        parsedArray.forEach(entry => {
          const key = JSON.stringify(entry); // simple deduplication by content
          if (!seen.has(key)) {
            seen.add(key);
            mergedArray.push(entry);
          }
        });
      }
    });

    callback({
      outputFields: {
        combined_conference_array: JSON.stringify(mergedArray)
      }
    });
    } catch (error) {
    console.error("❌ HubSpot API error:", error.response?.data || error.message);
    callback({
      outputFields: {
        combined_conference_array: "[]"
      }
    });
  }
  
  
}

This: Looks at all associated contacts that have a 'conference array' value. Then, compiles all those arrays into one. Then, you can use this output to make a bulk association request from Deal <> Conference.