@5minds/node-red-contrib-processcube/dataobject-instance-query.js

Node-RED nodes for ProcessCube

module.exports = function (RED) {
    function DataobjectInstanceQuery(config) {
        RED.nodes.createNode(this, config);
        var node = this;

        node.on('input', function (msg) {
            let query = RED.util.evaluateNodeProperty(config.query, config.query_type, node, msg);

            node.engine = RED.nodes.getNode(config.engine);
            const client = node.engine.engineClient;
            const isUser = !!msg._client?.user && !!msg._client.user.accessToken;
            const userIdentity = isUser ? { userId: msg._client.user.id, token: msg._client.user.accessToken } : null;

            if (!client) {
                node.error('No engine configured.', msg);
                return;
            }

            client.dataObjectInstances
                .query(query, { identity: userIdentity })
                .then((matchingInstances) => {
                    msg.payload = matchingInstances;

                    if (config.onlyNewest) {
                      const newestInstances = {};

                      matchingInstances.dataObjectInstances.forEach(instance => {
                        newestInstances[instance.processInstanceId] ??= {};
                        if (!newestInstances[instance.processInstanceId][instance.dataObjectId] || newestInstances[instance.processInstanceId][instance.dataObjectId].createdAt < instance.createdAt) {
                          newestInstances[instance.processInstanceId][instance.dataObjectId]  = instance;
                        }
                      })

                      msg.payload.dataObjectInstances = Object.values(newestInstances).flatMap(v => Object.values(v));
                    }

                    node.send(msg);
                })
                .catch((error) => {
                    node.error(`Dataobject Instance Query failed: ${error.message}`, msg);
                });
        });
    }
    RED.nodes.registerType('dataobject-instance-query', DataobjectInstanceQuery);
};