kopi.js/dist/kopi.js

API for ordering Singaporean Coffee

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global.Kopi = factory());
}(this, function () { 'use strict';

  var kopi = {

    parse: function parse(name){
      name = name.trim().toLowerCase();

      // defaults
      var coffee = 0,
        condensed_milk = 0, // sweetened
        evaporated_milk = 0, // unsweetened
        sugar = 0,
        water = 0,
        state = 'warm';

      if (/^kopi/.test(name)){

        // 1. TYPES

        sugar = 1;

        // Kopi C
        if (/^kopi\s(c|si|see)\b/.test(name)){
          evaporated_milk = .2;
          water = .4;
          coffee = .4;
        }
        // Kopi O
        else if (/^kopi\soh?\b/.test(name)){
          water = .5;
          coffee = .5;
        }
        // Kopi
        else {
          condensed_milk = .2;
          water = .4;
          coffee = .4;
        }

        // 2. STATE

        if (/\b(peng|bing)\b/.test(name)){
          state = 'iced';
        } else if (/\bpua sio\b/.test(name)){
          state = 'lukewarm';
        }

        // 3. EXPRESSIONS

        // po = more water, less coffee
        if (/\bpoh?\b/.test(name)){
          water += .1;
          coffee -= .1;
        }
        // gau = more coffee, less water
        else if (/\b(g|k)a(u|o)\b/.test(name)){
          water -= .1;
          coffee += .1;
        }
        // di lo = no water, more coffee
        else if (/\bdi\slo\b/.test(name)){
          coffee += water;
          water = 0;
        }

        // kosong = no sugar
        if (/\bkosong\b/.test(name)){
          if (condensed_milk){
            throw new Error('Invalid Kopi. Condensed milk contains sugar.');
          }
          sugar = 0;
        }
        // gah dai = sweeter
        else if (/\b(ga|ka)h?\s(d|t)ai\b/.test(name)){
          if (condensed_milk > 0){
            condensed_milk += .1;
            water -= .05;
            coffee -= .05;
          } else if (evaporated_milk > 0){
            evaporated_milk += .1;
            water -= .05;
            coffee -= .05;
          }
          sugar = 1.5;
        }
        // siu dai = less sweet
        else if (/\b(siu|siew|xiu)\s(t|d)ai\b/.test(name)){
          sugar = .5;
        }
        
      } else if (/^water$/.test(name)){
        water = 1;
      }

      return {
        water: water,
        coffee: coffee,
        sugar: sugar,
        condensed_milk: condensed_milk,
        evaporated_milk: evaporated_milk,
        state: state
      };
    },

    stringify: function stringify(ingredients){
      if ( ingredients === void 0 ) ingredients = {};

      var condensed_milk = ingredients.condensed_milk;
      var evaporated_milk = ingredients.evaporated_milk;
      var state = ingredients.state;
      var sugar = ingredients.sugar;
      var coffee = ingredients.coffee;
      var water = ingredients.water;

      var coffeeText = '',
        stateText = '',
        milkText = '',
        sweetnessText = '';

      if (evaporated_milk > 0){
        milkText = ' C';
      } else if (condensed_milk <= 0){ // No milk
        milkText = ' O';
      }

      if (state == 'iced'){
        stateText = ' Peng';
      } else if (state == 'lukewarm'){
        stateText = ' Pua Sio';
      }

      if (coffee > water){
        if (water == 0){
          coffeeText = ' Di Lo';
        } else if (condensed_milk > water){
          sweetnessText = ' Gah Dai';
        } else {
          coffeeText = ' Gao';
        }
      } else if (coffee < water){
        coffeeText = ' Po';
      }

      if (sugar == 0 && condensed_milk <= 0){
        sweetnessText = ' Kosong';
      } else if (sugar < 1){
        sweetnessText = ' Siew Dai';
      } else if (sugar > 1){
        sweetnessText = ' Gah Dai';
      }

      return ("Kopi" + milkText + stateText + coffeeText + sweetnessText);
    }

  };

  return kopi;

}));