I'm trying to make a HTTPS Callable function that gets Tweets from a user.
In my app:
const getTweets = firebase.functions().httpsCallable('getTweets');
getTweets({
username: 'someUsername',
})
.then(res => console.log(res))
.catch(e => console.log(e));
But no data is returned... I get a empty object {data: null}
This is the function:
exports.getTweets = functions.https.onCall(async (data, context) => {
const Twitter = require('twitter');
const client = new Twitter({
consumer_key: functions.config().twitter.api_key,
consumer_secret: functions.config().twitter.api_secret_key,
access_token_key: functions.config().twitter.access_token,
access_token_secret: functions.config().twitter.access_token_secret,
});
const params = { screen_name: data.username };
// ======== I've tried this: ========
return client.get('statuses/user_timeline', params, (error, tweets, response) => {
if (!error) {
console.log(tweets);
}
});
// ======== And this: ========
client.get('statuses/user_timeline', params, (error, tweets, response) => {
if (!error) {
console.log(tweets);
return tweets;
}
});
});
Seems to a asynchronous issue, you could use Promise
instead ( https://www.npmjs.com/package/twitter#promises ):
exports.getTweets = functions.https.onCall(async (data, context) => {
const Twitter = require('twitter');
const client = new Twitter({
consumer_key: functions.config().twitter.api_key,
consumer_secret: functions.config().twitter.api_secret_key,
access_token_key: functions.config().twitter.access_token,
access_token_secret: functions.config().twitter.access_token_secret,
});
const params = { screen_name: data.username };
try {
return client.get('statuses/user_timeline', params);
} catch (err) {
console.log(err);
}
});
The could be surrounding the use the callback style client.get
. Instead try returning a Promise . Promise
is natively available without any additional libraries:
exports.getTweets = functions.https.onCall(async (data, context) => {
const Twitter = require('twitter');
const client = new Twitter({
consumer_key: functions.config().twitter.api_key,
consumer_secret: functions.config().twitter.api_secret_key,
access_token_key: functions.config().twitter.access_token,
access_token_secret: functions.config().twitter.access_token_secret,
});
const params = { screen_name: data.username };
return new Promise((resolve, reject) => {
client.get('statuses/user_timeline', params, (error, tweets, response) => {
if (error) {
// Make sure to reject to avoid leaving it hanging in case of error
return reject(error);
}
return resolve(tweets);
});
});
});
Hopefully that helps!
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