// ########## user_fns.js

const hashPassword = (password) => {

    bcrypt.hash(password, saltRounds, (err, hash) => {
      if(err){
      	console.log(err)
      } else {
      	// console.log(hash)
      	return hash
      }
    })
}


const getUserByEmail = (email) => {
	return Promise.try(() => {
	        return database("users").where({ email: email });
	    }).then(function(results){
			if(results.length !== 0){
				console.log('there are results from checkUser_EmailExists, results object is:', results)
				return results
			} else {
				console.log('there are no results from checkUser_EmailExists, results object is:', results)
				return results
			}
		})
	.catch(function(err) {
		throw('error on attempt to checkUser_EmailExists', err)
	})
}

const createUser = (username, email, hashed_password) => {

	// our default usertype is 'general-hasNot-applied'
	return Promise.try(() => {
		database('users').insert([
			{	username: username,
			 	email: email,
			 	hashed_password: hashed_password,
			 	user_type: 'general-hasNot-applied'
			}
		])
	.catch(function(err) {
		throw('error on attempt to createUser', err)
	})
	})
}



// #########  excerpt from the API file that uses the above functions
return Promise.try(() => {
	    	    // Here, we return the result of calling our own function. That return value is a Promise.
	    	    return User_fns.getUserByEmail(req.body.email);
	    	}).then((user) => {
	    		// B - if user obj does not exist, we can safely create one
	    		// an empty user object appears as empty array: []
	    		if (user === undefined || user.length == 0) {
	    		    // array empty or does not exist
	    		    console.log('user obj is empty or does not exist');
	    		    // safe to create user, b/c this one we searched for does not exist.
	    		    // - B1. hash pw.
	    		    console.log('pw avail?', req.body.password);
	    		    var password =  req.body.password;

					var hashed_password = User_fns.hashPassword(password);

			    	console.log('hashed_password 123?', hashed_password)


			    	User_fns.createUser(req.body.username, req.body.email, hashed_password)
			    	req.flash('success', 'Thanks for registering.')

			    	res.render('pages/register', {
		    	    data: req.body, // { message, email }
		    	    errors: errors.mapped(),
		    	    env: process.env.NODE_ENV
		    		})
	    		    // - B2. insert user into users table.

	    		        // passing in the request objects from form, and hashed_password

	    		    	// should even pass in some of their info, such as username, so its clear that it worked
	    		    // - B3. flash confirmation
	    		}