<div id="app">
  <h1 class="title">
    <img class="vue-logo" src="https://vuejs.org/images/logo.png" />
    Card Shuffling
  </h1>
  <div class="main-buttons">
    <button @click="shuffleDeck" class="button is-primary">
      Shuffle <i class="fas fa-random"></i>
    </button>
  </div>
  <div class="deck">
    <div v-for="card in cards" :key="card.id"
         class="card"
         :class="suitColor[card.suit]">
      <span class="card__suit card__suit--top">{{ card.suit }}</span>
      <span class="card__number">{{ card.rank }} </span>
      <span class="card__suit card__suit--bottom">{{ card.suit }}</span>
    </div>
  </div>
</div>

@import url("https://fonts.googleapis.com/css?family=Roboto+Slab:300,400,700");

html, body, #app {
  height: 100%;
  background: ghostwhite;
}

.title {
  font-family: Roboto Slab, sans-serif;
  text-align: center;
  padding-top: 30px;
  margin-bottom: 0 !important;
  font-weight: 300;
  font-size: 3rem;
}

.vue-logo {
  height: 55px;
  position: relative;
  top: 10px;
}

.speed-buttons {
  text-align: center;
  padding-top: 30px;
}
.speed-buttons .button {
  height: 2.50em;
}

.main-buttons {
  display: block;
  margin: 0 auto;
  text-align: center;
  padding-top: 30px;
  margin-bottom: 0 !important;
}

.count-section {
  position: absolute;
  top: 10px;
  right: 10px;
}

.fas {
  padding-left: 5px;
}

.deck {
  margin-left: 30px;
  padding-top: 30px;
}

.card {
  width: 75px;
  height: 100px;
  float: left;
  margin-right: 5px;
  margin-bottom: 5px;
  border-radius: 2px;
}

.card__suit {
  width: 100%;
  display: block;
}

.card__suit--top {
  text-align: left;
  padding-left: 5px;
}

.card__suit--bottom {
  position: absolute;
  bottom: 0px;
  text-align: left;
  transform: rotate(180deg);
  padding-left: 5px;
}

.card__number {
  width: 100%;
  position: absolute;
  top: 38%;
  text-align: center;
}

.red {
  color: #FF0000;
}

.black {
  color: #000;
}

.twitter-section {
  position: absolute;
  bottom: 10px;
  right: 10px;
}
.twitter-section .fa-twitter-square {
  color: #00d1b2;
  font-size: 30px;
}

.shuffleSlow-move {
  transition: transform 2s;
}

.shuffleMedium-move {
  transition: transform 1s;
}

.shuffleFast-move {
  transition: transform 0.5s;
}

.fade-enter-active, .fade-leave-active {
  transition: opacity .5s;
}

.fade-enter, .fade-leave-to {
  opacity: 0;
}

@media (max-width: 1210px) {
  .deck {
    position: initial;
    top: 0;
  }

  .twitter-section {
    display: none;
  }
}

new Vue({
  el: '#app',
  data: {
    ranks: ['A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'],
    suits: ['♥','♦','♠','♣'],
    cards: [],
    suitColor: {
      '♠': 'black',
      '♣': 'black',
      '♦': 'red',
      '♥': 'red',
    },
  },
  created() {
    this.displayInitialDeck();
  },
  methods: {
    displayInitialDeck() {
      let id = 1;
      this.cards = [];

      for( let s = 0; s < this.suits.length; s++ ) {
        for( let r = 0; r < this.ranks.length; r++ ) {
          let card = {
            id: id,
            rank: this.ranks[r],
            suit: this.suits[s]
          }
          this.cards.push(card);
          id++;
        }
      }
    },
    shuffleDeck() {        
      for(let i = this.cards.length - 1; i > 0; i--) {
        let randomIndex = Math.floor(Math.random() * i);
        
        let temp = this.cards[i];
        Vue.set(this.cards, i, this.cards[randomIndex]);
        Vue.set(this.cards, randomIndex, temp);
      }
    },
  },
});