<script setup lang="ts">
import { ref, computed } from 'vue';
import { useI18n } from 'vue-i18n';
import { PARLAY_MIN_LEGS, PARLAY_MAX_LEGS } from '@thebet365/shared';
import { useBetSlipStore } from '../stores/betSlip';
import BetSuccessOverlay from './BetSuccessOverlay.vue';
import api from '../api';

const props = defineProps<{ modelValue: boolean }>();
const emit = defineEmits<{ 'update:modelValue': [boolean] }>();

const { t } = useI18n();
const slip = useBetSlipStore();
const show = computed({
  get: () => props.modelValue,
  set: (v) => emit('update:modelValue', v),
});

const loading = ref(false);
const error = ref('');
const success = ref('');
const showSuccess = ref(false);

function genId() {
  return `${Date.now()}-${Math.random().toString(36).slice(2)}`;
}

function onSuccessDone() {
  showSuccess.value = false;
  show.value = false;
  success.value = '';
}

async function placeBet() {
  if (!slip.items.length) return;
  loading.value = true;
  error.value = '';
  success.value = '';

  try {
    if (slip.canPlaceParlay) {
      if (slip.items.length > PARLAY_MAX_LEGS) {
        error.value = t('bet.parlay_max_legs');
        return;
      }
      await api.post('/player/bets/parlay', {
        legs: slip.items.map((i) => ({
          selectionId: i.selectionId,
          oddsVersion: i.oddsVersion,
        })),
        stake: slip.stake,
        requestId: genId(),
      });
    } else if (slip.canPlaceBatchSingles) {
      for (const item of slip.items) {
        await api.post('/player/bets/single', {
          selectionId: item.selectionId,
          oddsVersion: item.oddsVersion,
          stake: slip.stake,
          requestId: genId(),
        });
      }
    } else {
      error.value = t('bet.parlay_need_more');
      return;
    }
    success.value = t('bet.place_success');
    slip.clear();
    showSuccess.value = true;
    setTimeout(() => {
      if (showSuccess.value) {
        showSuccess.value = false;
        show.value = false;
        success.value = '';
      }
    }, 2500);
  } catch (e: unknown) {
    error.value =
      (e as { response?: { data?: { error?: string } } })?.response?.data?.error ||
      t('bet.place_failed');
  } finally {
    loading.value = false;
  }
}
</script>

<template>
  <div v-if="show" class="overlay" @click.self="show = false">
    <div class="drawer">
      <div class="drawer-body">
        <div class="drawer-header">
          <h3>{{ t('bet.bet_slip') }} <span class="count">({{ slip.count }})</span></h3>
          <button type="button" class="close-btn" :aria-label="t('bet.cancel')" @click="show = false">
            ✕
          </button>
        </div>

        <div v-if="!slip.items.length" class="empty">{{ t('bet.slip_empty_hint') }}</div>

        <div v-for="item in slip.items" :key="item.selectionId" class="slip-item">
          <div class="item-name">{{ item.matchName }}</div>
          <div class="item-sel">
            {{ item.selectionName }} @ <span class="odds">{{ item.odds }}</span>
          </div>
          <button type="button" class="remove" @click="slip.removeItem(item.selectionId)">
            {{ t('bet.slip_remove') }}
          </button>
        </div>

        <p v-if="slip.canPlaceParlay" class="mode-hint mode-hint--parlay">
          {{ t('bet.parlay') }} · {{ t('bet.slip_parlay_odds', { odds: slip.totalOdds.toFixed(2) }) }}
        </p>
        <p v-else-if="slip.canPlaceBatchSingles && slip.count > 1" class="mode-hint">
          {{ t('bet.slip_singles_hint', { n: slip.count }) }}
        </p>

        <div v-if="slip.items.length" class="stake-area">
          <label>{{
            slip.canPlaceBatchSingles && slip.count > 1
              ? t('bet.slip_stake_per_bet')
              : t('bet.stake')
          }}</label>
          <input v-model.number="slip.stake" type="number" min="1" />
          <div class="return">
            {{ t('bet.slip_est_return') }}:
            <strong>{{ slip.potentialReturn.toFixed(2) }}</strong>
          </div>
        </div>

        <p v-if="error" class="error">{{ error }}</p>
        <p v-if="success" class="success">{{ success }}</p>
      </div>

      <div class="drawer-foot">
        <button
          type="button"
          class="btn-primary"
          :disabled="loading || !slip.canSubmit"
          @click="placeBet"
        >
          {{ loading ? t('bet.placing') : t('bet.place_bet') }}
        </button>
      </div>
    </div>
  </div>

  <BetSuccessOverlay :show="showSuccess" @done="onSuccessDone" />
</template>

<style scoped>
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 200;
  display: flex;
  align-items: flex-end;
}

.drawer {
  background: linear-gradient(180deg, #222 0%, #141414 100%);
  width: 100%;
  max-height: 80vh;
  border-radius: 16px 16px 0 0;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px 14px 0;
  -webkit-overflow-scrolling: touch;
}

.drawer-foot {
  flex-shrink: 0;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom, 0px));
  background: rgba(14, 14, 14, 0.98);
  border-top: 1px solid var(--border-gold-soft);
  box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.45);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.drawer-header h3 {
  font-size: 16px;
  font-weight: 800;
}

.count {
  color: var(--primary-light);
}

.close-btn {
  background: none;
  color: var(--text-muted);
  font-size: 20px;
  padding: 4px;
}

.slip-item {
  padding: 10px 12px;
  background: #111;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 8px;
}

.item-name {
  font-size: 13px;
  font-weight: 800;
}

.item-sel {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.odds {
  color: var(--primary-light);
  font-weight: 800;
}

.remove {
  background: none;
  color: var(--danger);
  font-size: 12px;
  margin-top: 6px;
  font-weight: 700;
}

.mode-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.mode-hint--parlay {
  color: var(--primary-light);
  font-weight: 700;
}

.stake-area {
  margin: 12px 0;
}

.stake-area label {
  font-size: 12px;
  color: var(--primary-light);
  display: block;
  margin-bottom: 6px;
  font-weight: 700;
}

.return {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
}

.return strong {
  color: var(--primary-light);
  font-size: 18px;
  font-weight: 800;
}

.error {
  color: var(--danger);
  font-size: 13px;
  margin-bottom: 8px;
}

.success {
  color: var(--primary-light);
  font-size: 13px;
  margin-bottom: 8px;
}

.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 24px;
  font-size: 13px;
}
</style>
