how to run the dialogflow node js? - node.js

Question

i am still confused about the documentation on Dialogflow nodejs, can I get clear for this?
I have read the documentation this -> https://cloud.google.com/dialogflow/docs/reference/rest/v2/projects.agent.sessions/detectIntent
how to test my code and see the result of my query I input then ?
should I do POST via Axios inside this functions
async function runSample(projectId = 'your-project-id') {
// A unique identifier for the given session
const sessionId = uuid.v4();
// Create a new session
const sessionClient = new dialogflow.SessionsClient();
const sessionPath = sessionClient.sessionPath(projectId, sessionId);
// The text query request.
const request = {
session: sessionPath,
queryInput: {
text: {
// The query to send to the dialogflow agent
text: 'hello',
// The language used by the client (en-US)
languageCode: 'en-US',
},
},
};
// Send request and log result
const responses = await sessionClient.detectIntent(request);
console.log('Detected intent');
const result = responses[0].queryResult;
console.log(` Query: ${result.queryText}`);
console.log(` Response: ${result.fulfillmentText}`);
if (result.intent) {
console.log(` Intent: ${result.intent.displayName}`);
} else {
console.log(` No intent matched.`);
}
}
i still not get clear for this, so do we need use HTTP request also in local to check this?
I already follow the Dialogflow nodejs example, but what next?
it said on google we must POST to
POST https://dialogflow.googleapis.com/v2/{session=projects//agent/sessions/}:detectIntent
nd the req body is on the request variable inside that functions,
but I still not clear on dialogflow nodejs for the next step to run that method

Answer 1

You can run this directly using the express app. Just call this function from your express app route or you can call the given function in the file and use node <filename.js> to run the code. Make sure you add your google cloud credentials in the path name using process.env.GOOGLE_APPLICATION_CREDENTIALS = "<your_json_file_path>";

Answer 2

const sessionClient = new dialogflow.SessionsClient(
// below can be used to set the variable in code itself, if below is not working you can run following in the terminal
//export GOOGLE_APPLICATION_CREDENTIALS="/<path of the json file"
{
keyFilename: "/<path of the json file"
}
);