<script setup lang="ts">
import { ref, computed } from 'vue'

type Symbol = '🍎' | '💎' | '🔔' | '🍒' | '🍋' | '⭐' | '❓';
const symbols: Symbol[] = ['🍎', '💎', '🔔', '🍒', '🍋', '⭐']

const reelStates = ref([
  { value: '❓' as Symbol, isSpinning: false },
  { value: '❓' as Symbol, isSpinning: false },
  { value: '❓' as Symbol, isSpinning: false }
])

const globalSpinning = ref(false)
const hasSpun = ref(false)

const isWinner = computed(() => {
  const [r1, r2, r3] = reelStates.value;
  return hasSpun.value && !globalSpinning.value &&
    r1?.value !== '❓' && r1?.value === r2?.value && r2?.value === r3?.value
})

const getRandomSymbol = (): Symbol => symbols[Math.floor(Math.random() * symbols.length)]!

const spin = (): void => {
  if (globalSpinning.value) return;

  globalSpinning.value = true;
  hasSpun.value = false;

  reelStates.value.forEach((reel, index) => {
    reel.isSpinning = true;

    // Stop each reel with a stagger
    setTimeout(() => {
      reel.value = getRandomSymbol();
      reel.isSpinning = false;

      if (index === 2) {
        globalSpinning.value = false;
        hasSpun.value = true;
      }
    }, 1500 + (index * 800));
  });
};
</script>

<template>
  <q-layout>
    <q-page-container>
      <q-page class="flex flex-center">
        <q-card class="slot-machine-card q-pa-lg text-center shadow-10">
          <div class="text-h4 q-mb-md text-black text-weight-bolder">Offline Casino</div>

          <div class="row justify-center q-gutter-md q-mb-xl">
            <div v-for="(reel, index) in reelStates" :key="index" class="reel-container shadow-2">

              <div v-if="reel.isSpinning" class="reel-strip">
                <div v-for="n in 10" :key="n" class="text-h2">{{ symbols[n % symbols.length] }}</div>
              </div>

              <div v-else class="text-h2 static-symbol">{{ reel.value }}</div>

            </div>
          </div>

          <div class="result-box q-mb-md" style="height: 40px;">
            <div v-if="isWinner" class="text-h5 text-positive text-weight-bold animate-bounce">YOU WIN! (Nothing)</div>
            <div v-else-if="hasSpun && !globalSpinning" class="text-h6 text-grey-7">Try again!</div>
            <div v-else class="text-h6 text-grey-7">Try your luck until you are connected!</div>
          </div>

          <q-btn
            size="lg" color="light-green"
            :label="globalSpinning ? 'SPINNING...' : 'SPIN'"
            :loading="globalSpinning"
            @click="spin" class="full-width" rounded
          />
        </q-card>
      </q-page>
    </q-page-container>
  </q-layout>
</template>

<style scoped>
.slot-machine-card { width: 100%; max-width: 400px; border: 4px solid #2c3e50; border-radius: 20px; }

.reel-container {
  background: white;
  width: 80px;
  height: 100px;
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  border: 2px solid #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reel-strip {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 0;
  animation: move-strip 0.3s linear infinite;
  filter: blur(2px);
}

@keyframes move-strip {
  0% { transform: translateY(-50%); }
  100% { transform: translateY(0); }
}

.static-symbol {
  animation: land 0.2s ease-out;
}

@keyframes land {
  0% { transform: translateY(-40px); opacity: 0; }
  70% { transform: translateY(10px); }
  100% { transform: translateY(0); opacity: 1; }
}

.animate-bounce { animation: bounce 0.5s infinite alternate; }
@keyframes bounce { from { transform: scale(1); } to { transform: scale(1.1); } }
</style>
