var Flower = Object.freeze({
  Pine: 0,
  Plum: 1,
  Cherry: 2,
  Wisteria: 3,
  Iris: 4,
  Peony: 5,
  BushClover: 6,
  SusukiGrass: 7,
  Chrysanthemum: 8,
  Maple: 9,
  Willow: 10,
  Paulownia: 11
});

var Family = Object.freeze(
  ["Kasu", "Tan", "Tane", "Hikari"].reduce(function(o, name) {
    o[name] = {class: name[0].toLowerCase() + name.slice(1)};
    return o;
  }, {})
);

var CardNames = [
  "Pine0", "Pine1", "PinePoetry", "Crane",
  "Plum0", "Plum1", "PlumPoetry", "BushWarbler",
  "Cherry0", "Cherry1", "CherryPoetry", "CampCurtain",
  "Wisteria0", "Wisteria1", "WisteriaRed", "Cuckoo",
  "Iris0", "Iris1", "IrisRed", "EightPlankBridge",
  "Peony0", "Peony1", "PeonyBlue", "Butterflies",
  "BushClover0", "BushClover1", "BushCloverRed", "Boar",
  "SusukiGrass0", "SusukiGrass1", "Geese", "FullMoon",
  "Chrysanthemum0", "Chrysanthemum1", "ChrysanthemumBlue", "SakeCup",
  "Maple0", "Maple1", "MapleBlue", "Deer",
  "Lightning", "WillowRed", "Swallow", "RainMan",
  "Paulownia0", "Paulownia1", "Sand", "Phoenix"
];

var Card = Object.freeze(
  CardNames.reduce(function(o, name, i) {
    o[name] = {
      id: i,
      family: findFamily(name, i),
      flower: Math.floor(i / 4),
			monthOffset: i % 4,
      name: name
    };
    return o;
  }, {})
);

return {
  Flower: Flower,
  Family: Family,
  Card: Card,
  sameMonth: sameMonth
};

function findFamily(name, i) {
  if((i % 4 < 2 && i < 41) || (i > 43 && i < 47)) {
    return Family.Kasu;
  } else if(name.match(/(Blue|Poetry|Red)/)) {
    return Family.Tan;
  } else if(["Crane", "CampCurtain", "FullMoon", "RainMan", "Phoenix"].includes(name)) {
    return Family.Hikari;
  } else {
    return Family.Tane;
  }
}

function sameMonth(card) {
  var first = 4 * card.flower;
  return [0,1,2,3].map(function(i) {return Card[CardNames[first + i]];});
}