_.each(ingredients, function (subItem) {
var listItem;
if(!subItem.quantity && !subItem.fraction) {
listItem = {_id: subItem._id, listName: subItem.listName, suffix: subItem.suffix};
}
else if (subItem.quantity && subItem.fraction){
let quantity = math.fraction(subItem.quantity);
let fraction = math.fraction(subItem.fraction);
let sum = math.add(quantity, fraction);
listItem = {_id: subItem._id, quantity: sum, measurement: subItem.measurement, listName: subItem.listName, suffix: subItem.suffix};
}
else if (!subItem.quantity && subItem.fraction){
let fraction = math.fraction(subItem.fraction);
let sum = math.add(0, fraction);
listItem = {_id: subItem._id, quantity: sum, measurement: subItem.measurement, listName: subItem.listName, suffix: subItem.suffix};
}
else {
let quantity = math.fraction(subItem.quantity);
listItem = {_id: subItem._id, quantity: quantity, measurement: subItem.measurement, listName: subItem.listName, suffix: subItem.suffix};
}
var existingItem = _.findWhere(shoppingList, {_id: subItem._id});
if(existingItem) {
console.log(existingItem);
console.log(listItem);
var newItem = existingItem;
if (existingItem.measurement === listItem.measurement) {
let sum = math.add(existingItem.quantity, listItem.quantity);
newItem.quantity = sum;
}
else {
if (listItem.quantity) {
newItem.addQuantity = math.fraction(listItem.quantity);
newItem.addMeasurement = listItem.measurement;
}
}
_.extend(_.findWhere(shoppingList, { _id: subItem._id }), newItem);
return;
}
else {
shoppingList.push(listItem);
}
});
const decimalToFractionString = function (number) {
let fractionString;
let wholeNumber = Math.floor(Number(number));
let fraction = math.fraction(number-wholeNumber);
if (fraction.n > 0 && wholeNumber > 0) {
fractionString = wholeNumber + ' ' + fraction.n + '/' + fraction.d;
}
else if (fraction.n > 0) {
fractionString = fraction.n + '/' + fraction.d;
}
else {
fractionString = wholeNumber.toString();
}
return fractionString;
}
'use strict';
let mathjs = require('mathjs');
mathjs.config({number: 'Fraction'});
module.exports = {
readNumber(text) {
return mathjs.fraction(text);
},
writeNumber(number) {
return mathjs.format(number, {fraction: 'decimal', notation: 'fixed'});
},
isNumberEqual(x, y, ...rest) {
for (let n of [y, ...rest]) {
if (!mathjs.equal(x, n)) {
return false;
}
}
return true;
},
divide(x, y, ...rest) {
return [x, y, ...rest].reduce(
(result, value) => mathjs.divide(result, value));
},
multiply(x, y, ...rest) {
return mathjs.multiply(x, y, ...rest);
},