Firebase Part 6 - Moderate User Profile Image

moderateUserProfileImage.ts

module.exports.moderateUserProfileImage = function(object) {
    const userId = object.name.split('/')[1];
    const userDocRef = admin.firestore().collection('users').doc(userId);

    return userDocRef.get()
        .then(doc => {
            const user = doc.data();
            // The image has already been moderated.
            if (user.locked === true) {
                console.log('already moderated!');
                return;
            }

            // Check the image content using the Cloud Vision API.
            return visionClient.safeSearchDetection(`gs://${object.bucket}/${object.name}`);
        })
        .then((results) => {
            if (!results) {
                return;
            }

            const detections = results[0].safeSearchAnnotation;

            if (detections.adult || detections.violence) {
                console.log('The image', object.name, 'has been detected as inappropriate.');
                return blurImage(object, userDocRef);
            }
            else {
                console.log('The image', object.name, ' has been detected as OK.');
                return null;
            }
        });
}