const config = require("../config.js");
const crypto = require("crypto");
const CardModel = require("../cards/cards.model");

const CardTool = {};

CardTool.getPackCards = async (pack) => {
  var pack_cards = await CardModel.getByPack(pack.tid);
  console.log("pack_cards", pack_cards);
  var cards = [];
  for (var i = 0; i < pack.cards; i++) {
    if (pack.random) {
      //Randomized set
      var rarity_tid = CardTool.getRandomRarity(pack, i == 0);
      var variant_tid = CardTool.getRandomVariant(pack);
      var rarity_cards = CardTool.getCardArray(pack_cards, rarity_tid);
      var card = CardTool.getRandomCard(rarity_cards);
      if (card) {
        var cardQ = { tid: card.tid, variant: variant_tid, quantity: 1 };
        cards.push(cardQ);
      }
    } else if (i < pack_cards.length) {
      //Fixed set
      var card = pack_cards[i];
      var variant_tid = CardTool.getRandomVariant(pack);
      var cardQ = { tid: card.tid, variant: variant_tid, quantity: 1 };
      cards.push(cardQ);
    }
  }
  return cards;
};

CardTool.getRandomRarity = (pack, is_first) => {
  var rarities = is_first ? pack.rarities_1st : pack.rarities;
  if (!rarities || rarities.length == 0) return ""; //Any rarity

  var total = 0;
  for (var rarity of rarities) {
    total += rarity.value;
  }

  var rvalue = Math.floor(Math.random() * total);

  for (var i = 0; i < rarities.length; i++) {
    var rarity = rarities[i];
    if (rvalue < rarity.value) {
      return rarity.tid;
    }
    rvalue -= rarity.value;
  }
  return "";
};

CardTool.getRandomVariant = (pack) => {
  var variants = pack.variants;
  if (!variants || variants.length == 0) return "";

  var total = 0;
  for (var variant of variants) {
    total += variant.value;
  }

  var rvalue = Math.floor(Math.random() * total);

  for (var i = 0; i < variants.length; i++) {
    var variant = variants[i];
    if (rvalue < variant.value) {
      return variant.tid;
    }
    rvalue -= variant.value;
  }
  return "";
};

CardTool.getCardArray = (all_cards, rarity) => {
  var valid_cards = [];
  for (var i = 0; i < all_cards.length; i++) {
    var card = all_cards[i];
    if (!rarity || card.rarity == rarity) valid_cards.push(card);
  }
  return valid_cards;
};

CardTool.getRandomCard = (all_cards, suffix) => {
  if (all_cards.length > 0) {
    var card = all_cards[Math.floor(Math.random() * all_cards.length)];
    return card;
  }
  return null;
};

module.exports = CardTool;