docparse-upload-process/lib/remove.js

process upload api request for the docparse server

var inspect = require('eyespect').inspector();
var mongoose = require('mongoose');
var Upload = require('docparse-upload');
var User = require('docparse-user');
var async = require('async');
var userInUpload = require('./userInUpload');
var rk = require('required-keys');

function keysExist(data, cb) {
  var keys = [
    'userID',
    'hash'
  ]
  rk.nonNull(data, keys, function (err, reply) {
    if (err) { return cb(err); }
    cb();
  });
}

function findUpload(data, cb) {
  Upload.findOne({hash: data.hash}, function (err, reply) {
    if (err) { return cb(err); }
    if (!reply) {
      return cb('upload not found with hash: '+ data.hash);
    }
    data.upload = reply;
    cb();
  });
}
function findUser(data, cb) {
  User.findById(data.userID, function (err, reply) {
    if (err || !reply) {
      return cb('user not found with id: '+ data.userID);
    }
    data.user = reply;
    cb();
  });
}

/**
 * Remove user from the "users" field in the upload document, but leave the
 * actual upload document itself in the database
 */
function removeUpload(data, cb) {
  var upload = data.upload;
  var user = data.user;
  var userID = data.user._id
  upload.users.remove(userID)
  if (upload.user_details.hasOwnProperty(userID)) {
    delete upload.user_details[userID];
  }
  upload.save(cb);
  // Upload.remove({hash: data.hash}, cb);
}

module.exports = function(data, callback) {
  var upload;
  var output;
  async.series([
    function (cb) {
      keysExist(data, cb)
    },
    function (cb) {
      findUpload(data, cb)
    },
    function (cb) {
      findUser(data, cb)
    },
    function(cb) {
      userInUpload(data, function (err, reply) {
        if (err) { return cb(err); }
        if (!reply) {
          return cb('you are not permitted to remove this upload');
        }
        cb();
      });
    },
    function(cb) {
      removeUpload(data, cb)
    }
  ], callback);
}