Sample backend route for angular-image-crop

backend-avatar.js

exports.changeProfilePic = function(req, res) {

  var id = req.params.id;

  // check user is logged in
  if (!req.session.userId){
    res.send(401);
    return;
  }

  var requestFields = req.body;

  if (!requestFields.datauri) {
    res.send(400);
    return;
  }

  var fileBuffer = new Buffer(requestFields.datauri.replace(/^data:image\/\w+;base64,/, ''), 'base64');

  var contentLength = fileBuffer.length;
  
  var imageName = '_p_' + req.session.userId + '_' + utilsService.getRandomId(4) + '.png';

  if (contentLength > 1000000) {
    res.send(400, { errors: ['Sorry, your image must be less than 1Mb.'] });
    return;
  }
  
  // save to S3 bucket
  var params = {
      Bucket: config.s3.bucket,
      ACL: 'public-read',
      Key: imageName,
      Body: fileBuffer,
      ContentType: 'image/png',
      ContentLength: contentLength
    };
    
    // s3.putObject...
  
};