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database.js
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database.js
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'use strict';
// setting up required dependencies, assigning them to objects
var mongoose = require('mongoose');
var logger = require('./public/js/logger');
var User = require('./data/models/user');
var SurveySubmission = require('./data/models/surveySubmission');
// establishing connection to database, and calling createAdminUser() function once the conenction is open
this.setup = function () {
mongoose.connect('mongodb://localhost:27017/mongod');
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'Connection error!'));
db.once('open', function () {
logger.log("MongoDB connection open!");
createAdminUser();
});
};
// Check whether the user with the username and password passed in as parameters exists in the database,
// then execute callback function passed in as 3rd parameter ("callback") with boolean as argument signifying whether
// the user was found or not
this.isUserValid = function (usernameParam, passwordParam, callback) {
var query = User.findOne({username: usernameParam, password: passwordParam});
query.exec(function (err, data) {
if (err)
logger.log(err);
else
callback(data ? true : false);
});
};
// Saves the submission object to the database, with the passed in "entries" and "user" objects as fields
this.saveSubmission = function (entries, user) {
var submission = new SurveySubmission({
entries: entries,
user: user
});
submission.save();
};
// Retrieves the submission object for the passed in user, and executed the passed in callback function with the
// returned data object as parameter
this.getSubmission = function (userParam, callback) {
var query = SurveySubmission.findOne({user: userParam});
query.exec(function (err, data) {
if (err)
logger.log(err);
else
callback(data);
});
};
// Creates and persists the admin user to the database
function createAdminUser() {
var admin = new User();
admin.username = 'admin';
admin.password = admin.generateHash('boss');
admin.save();
}