device-icon-s3.js

deviceIcon.getImage = async(req, res, next) => {
    try {

        if (!req.body.deviceName) {
            res.status(400).json({msg: 'Device name required'});
            return;
        }

        AWS.config.update({
            apiVersion: '2006-03-01',
            accessKeyId: config.aws.accessKeyId,
            secretAccessKey: config.aws.secretAccessKey
        });

        const s3 = new AWS.S3();

        if (!s3) {
            res.status(500).json({msg: 'Can\'t Initialize S3 Object - Check your AWS settings in your .env'});
            return;
        }

        const deviceName = req.body.deviceName.replace(/[^0-9a-z]/gi, '').toLowerCase();

        s3.listObjectsV2({Bucket: config.aws.s3BucketName}, (err, data) => {
            if (err) {
                console.error(err);
                res.status(500).json({msg: 'Internal server error'}).end();
            } else {

                const files = data.Contents.map(file => ({
                    filename: file.Key.split('.').slice(0, -1).join('.'),
                    uri: config.aws.url + file.Key,
                    similarity: stringSimilarity.compareTwoStrings(deviceName, file.Key.split('.').slice(0, -1).join('.').split('-').join(' ').toLowerCase())
                }));

                let maxS = 0;
                let result = null;

                for (const file of files) {
                    if (file.similarity > maxS) {
                        maxS = file.similarity;
                        result = file;
                    }
                }

                if (result && result.similarity > 0.50) {
                    res.status(200).json({icon: result.uri}).end();
                } else {
                    res.status(200).json({icon: config.aws.url + 'no-img.png'}).end();
                }
            }
        });

    } catch (error) {
        next(error);
    }
};