beer-me

Library to (not so) randomly pick beers for you.

Requirements

This library works with a list of beers from the metro online grocery website that you can extract using feed-me.

const metro = require('feed-me')
const fs = require('fs')

metro.getAllResults({ category: 'beverages/beer-cider' })
  .then(JSON.stringify)
  .then(json => fs.writeFileSync('beers.json', json))

The expected format of a beer object is the following:

{
  "brand": "Brasserie Dieu du Ciel!",
  "name": "Disco Soleil kumquats IPA strong beer",
  "weight": "341 ml - bottle",
  "price": 2.39,
  "image": {
    "small": "https://product-images.metro.ca/images/h0b/h4c/8883933675550.jpg",
    "large": "https://product-images.metro.ca/images/h41/h2e/8883934593054.jpg"
  },
  "link": "https://www.metro.ca/en/online-grocery/aisles/beverages/beer-cider/artisanal-beer-microbrewery/disco-soleil-kumquats-ipa-strong-beer/p/696859060489",
  "category": "beverages/beer-cider/artisanal-beer-microbrewery"
}

For convenience, I added a static version of that list in the beers branch.

Usage

const beer = require('beer-me')
const beers = require('./beers').map(beer.formatify)

console.log(beer.beerMe(beers, 48))

You will get a selection of beers in the same format, but with a number of items that will match the desired number of beers (given as second argument).

Getting actual beers

For some reason, even if you search in the beverages/beer-cider categories, you get, stuff that is definitely not beer:

• beverages/beer-cider/cider
• beverages/beer-cider/non-alcoholic-beer
• beverages/juices-drinks/sparkling-juices-drinks
• beverages/soft-drinks/ginger-ale
• beverages/wines-cocktails-coolers/cocktails-other-wines
• beverages/wines-cocktails-coolers/sparkling-wine

By calling:

const actualBeers = beers.filter(beer.isActualBeer)

You get only beers from the following categories:

• beverages/beer-cider/artisanal-beer-microbrewery
• beverages/beer-cider/classic-beer
• beverages/beer-cider/classic-light-beer
• beverages/beer-cider/imported-beer
• beverages/beer-cider/specialty-flavoured-beer

Parsing beer format

beer.parseFormat('740•ml - can') // { count: 1, size: 740, type: 'can' }
beer.parseFormat('24x330•ml - cans') // { count: 24, size: 330, type: 'cans' }
beer.parseFormat('1.18•L - bottle') // { count: 1, size: 1180, type: 'bottle' }
beer.parseFormat('12x341•ml - bottles') // { count: 12, size: 341, type: 'bottles' }

You can also use the following:

const parsedBeers = beers.map(beer.formatify)

After what all the beers will have a format property with the count, size and type.

This is especially useful to filter beers:

const packsOfCans = parsedBeers.filter(beer => beer.format.type === 'cans')
const packsOfBottles = parsedBeers.filter(beer => beer.format.type === 'bottles')
const bigPacksOfBottles = packsOfBottles.filter(beer => beer.format.count >= 24)

This is also needed for the beerMe algorithm.

Real life example

Get packs of between 12 and 24 bottles (less than 500 ml) of beer from a given list of brands, to get a total of 48 bottles:

const beer = require('beer-me')
const beers = require('./beers')
const brands = require('./brands') // An array of brand names to pick.

const set = beers
  .map(beer.formatify)
  .filter(beer.isActualBeer)
  .filter(beer => beer.format.type === 'bottles')
  .filter(beer => beer.format.count >= 12 && beer.format.count <= 24)
  .filter(beer => beer.format.size < 500)
  .filter(beer => brands.includes(beer.brand))

const selection = beer.beerMe(set, 48)