Mcdonalds menu crawl gist

App.js

import React, { Component } from 'react';
import './App.css';
import axios from 'axios'
import MenuCombo from './menucombo'

const heading = "Enter a price cap here for recommendations"


class App extends Component {
      constructor(props){
            super(props)
            this.state = {
                  data:[]
            }
      }
      handleSubmit = (e) => {
            e.preventDefault()
             let PriceCap = this.input.value;
            axios.get(`/?${PriceCap}`)
                  .then(response  =>{
                        let data = response.data
                        console.log(data)
                        this.setState({data})
                  })
                  .catch(err => {
                        console.log("NOT FOUND",err)
                  })
      }
  render() {
    return (
      <div className="App">
        <header className="App-header">
          <h1 className="App-title">{heading}</h1>
        </header>
            <div className = "Menu-card">
                  <form onSubmit={this.handleSubmit}>
                        <label>Enter a price</label>
                        <input  name = 'PriceCap'
                                    ref={node => {this.input = node}}
                                    type = 'number'
                                    min = '1'
                                    max  ='20' />
                        <button>Generate Suggestions</button>
                        <MenuCombo data={this.state.data} />
                  </form>
             </div>
      </div>
    );
  }
}

export default App;

data.js

const express = require('express')
const app = express()
const Combinatorics = require("js-combinatorics");
const reducer = (accumulator, currentValue) => accumulator + currentValue;

app.get('/', function (req, res) {
	console.log(req.query);
	var max = 10;
	var cmb, total, items;
	var data = require('./subset.json');
	var parsed_data = [];
	var parsed_item = {};
	var entry = {};
	var results = [];
	data.forEach(function(i){
		parsed_item = {};
		parsed_item[i['ITEM']] = i['PRICE'];
		parsed_data.push(parsed_item);
	});

	cmb = Combinatorics.power(parsed_data);
	cmb.forEach(function(a){
		total = 0.0;
		items = [];
		a.forEach(function(b){
			total += Object.values(b).reduce(reducer);
			items.push(b);
	     	});
		if (total <= max && total != 0) {
			entry = {};
			entry['total'] = total.toFixed(2);
			entry['items'] = items;
			results.push(entry);
		}
	});

	var fs = require('fs');
	fs.writeFile("output.json", JSON.stringify(results), function(err) {
		if (err) {
			console.log(err);
		}
	});
	console.log("Results returning: ", results)
	res.send(results);
})

app.use(function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "http://localhost:3000");
    res.header("Access-Control-Allow-Credentials", "true");
    res.header("Access-Control-Allow-Headers", "Origin,Content-Type, Authorization, x-id, Content-Length, X-Requested-With");
    res.header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
    next();
});

app.listen(3001, () => console.log('Example app listening on port 3001'))

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import registerServiceWorker from './registerServiceWorker';

ReactDOM.render(<App />, document.getElementById('root'));
registerServiceWorker();

menucombo.js

import React from 'react'

class MenuCombo extends React.Component{
      render(){
            return(
                  <ul>
                        {this.props.data.map(item => {
                              return(
                                    <li key={item.id}>{item.name}</li>
                              )
                        })}
                  </ul>
            )
      }
}

export default MenuCombo

package.json

{
  "name": "budget-food",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "axios": "^0.18.0",
    "js-combinatorics": "^0.5.3",
    "react": "^16.4.1",
    "react-dom": "^16.4.1",
    "react-scripts": "1.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "proxy": "http://localhost:3001"
}

subset.json

[
      {
          "ID" : 1,
          "CAL": "540",
          "FAT": "28",
          "SFAT": "10",
          "TFAT": "1",
          "CHOL": "80",
          "SALT": "970",
          "CARB": "47",
          "FBR": "3",
          "SGR": "9",
          "PRO": "25",
          "ITEM": "Big Mac 7.5 oz (212 g)",
          "CATEGORY": "BURGERSANDWICH",
          "PRICE": 3.99,
          "MEALPRICE": 5.99
      },
      {
          "ID" : 2,
          "CAL": "300",
          "FAT": "12",
          "SFAT": "6",
          "TFAT": "0.5",
          "CHOL": "40",
          "SALT": "680",
          "CARB": "33",
          "FBR": "2",
          "SGR": "7",
          "PRO": "15",
          "ITEM": "Cheeseburger 4 oz (113 g)",
          "CATEGORY": "BURGERSANDWICH",
          "PRICE": 1.00
      },
      {
          "ID" : 3,
          "CAL": "540",
          "FAT": "28",
          "SFAT": "13",
          "TFAT": "1.5",
          "CHOL": "100",
          "SALT": "1110",
          "CARB": "42",
          "FBR": "3",
          "SGR": "10",
          "PRO": "31",
          "ITEM": "Quarter Pounder\u00ae with Cheese 7.3 oz (206 g)",
          "CATEGORY": "BURGERSANDWICH",
          "PRICE": 3.79,
          "MEALPRICE": 5.79
      },
      {
          "ID" : 4,
          "CAL": "780",
          "FAT": "45",
          "SFAT": "21",
          "TFAT": "2.5",
          "CHOL": "175",
          "SALT": "1310",
          "CARB": "43",
          "FBR": "3",
          "SGR": "10",
          "PRO": "50",
          "ITEM": "Double Quarter Pounder with Cheese 10.3 oz (291 g)",
          "CATEGORY": "BURGERSANDWICH",
          "PRICE": 4.79,
          "MEALPRICE": 6.69
      },
      {
          "ID" : 5,
          "CAL": "740",
          "FAT": "41",
          "SFAT": "16",
          "TFAT": "1.5",
          "CHOL": "125",
          "SALT": "1480",
          "CARB": "51",
          "FBR": "4",
          "SGR": "14",
          "PRO": "40",
          "ITEM": "Bacon Clubhouse Burger 9.7 oz (274 g)",
          "CATEGORY": "BURGERSANDWICH",
          "PRICE" : 4.49,
          "MEALPRICE" : 6.49
      }
]