<script setup lang="ts">
import { ref, onMounted } from 'vue';
import { useI18n } from 'vue-i18n';
import { useRoute, useRouter } from 'vue-router';
import api from '../../api';
import GoldSpinner from '../../components/GoldSpinner.vue';
import { formatMoney } from '../../utils/localeDisplay';
import { txTypeKey, txDisplayType, txSummaryLabel } from '../../utils/walletTx';

const { t, locale } = useI18n();
const route = useRoute();
const router = useRouter();

function goBack() {
  if (window.history.state && window.history.state.back) {
    router.back();
  } else {
    router.push('/wallet');
  }
}

type TxDetail = {
  transactionId: string;
  transactionType: string;
  displayType?: string;
  summary?: string | null;
  amount: string;
  balanceBefore?: string;
  balanceAfter?: string;
  frozenBefore?: string;
  frozenAfter?: string;
  createdAt: string;
  referenceType?: string | null;
  [key: string]: any;
};

const detail = ref<TxDetail | null>(null);
const loading = ref(true);
const error = ref(false);

async function loadDetail() {
  const id = route.params.transactionId as string;
  if (!id) return;
  loading.value = true;
  error.value = false;
  try {
    const { data } = await api.get(`/player/wallet/transactions/${id}`);
    detail.value = data.data ?? null;
  } catch {
    error.value = true;
  } finally {
    loading.value = false;
  }
}

onMounted(loadDetail);

function txLabel(tx: TxDetail): string {
  const key = txTypeKey(txDisplayType(tx));
  if (key) {
    const translated = t(key);
    if (translated !== key) return translated;
  }
  return tx.transactionType;
}
</script>

<template>
  <div class="desktop-account-page">
    <main class="account-main">
      <div class="detail-layout">
        <div class="page-header">
          <button type="button" class="back-btn" @click="goBack">
            ‹ {{ t('common.back') || '返回' }}
          </button>
          <h1 class="page-title">{{ t('wallet.transaction_detail') || '交易详情' }}</h1>
        </div>

        <div v-if="loading" class="loading-state">
          <GoldSpinner :size="36" />
        </div>

        <div v-else-if="error" class="error-state">
          <p>{{ t('common.load_failed') }}</p>
          <button type="button" class="retry-btn" @click="loadDetail">{{ t('common.retry') }}</button>
        </div>

        <div v-else-if="detail" class="detail-card">
          <div class="amount-hero" :class="parseFloat(detail.amount) >= 0 ? 'pos' : 'neg'">
            {{ formatMoney(detail.amount, locale) }}
          </div>
          <div class="type-label">{{ txLabel(detail) }}</div>

          <div class="detail-rows">
            <div class="detail-row">
              <span class="row-label">{{ t('wallet.type') || '类型' }}</span>
              <span class="row-val">{{ txLabel(detail) }}</span>
            </div>
            <div class="detail-row">
              <span class="row-label">{{ t('wallet.note') || '备注' }}</span>
              <span class="row-val">{{ txSummaryLabel(detail, t) || '-' }}</span>
            </div>
            <div class="detail-row">
              <span class="row-label">{{ t('wallet.balance_before') || '变动前余额' }}</span>
              <span class="row-val mono">{{ formatMoney(detail.balanceBefore, locale) }}</span>
            </div>
            <div class="detail-row">
              <span class="row-label">{{ t('wallet.balance_after') || '变动后余额' }}</span>
              <span class="row-val mono">{{ formatMoney(detail.balanceAfter, locale) }}</span>
            </div>
            <div v-if="parseFloat(detail.frozenBefore || '0') > 0 || parseFloat(detail.frozenAfter || '0') > 0" class="detail-row">
              <span class="row-label">{{ t('wallet.frozen_before') || '冻结前' }}</span>
              <span class="row-val mono">{{ formatMoney(detail.frozenBefore, locale) }}</span>
            </div>
            <div v-if="parseFloat(detail.frozenBefore || '0') > 0 || parseFloat(detail.frozenAfter || '0') > 0" class="detail-row">
              <span class="row-label">{{ t('wallet.frozen_after') || '冻结后' }}</span>
              <span class="row-val mono">{{ formatMoney(detail.frozenAfter, locale) }}</span>
            </div>
            <div class="detail-row">
              <span class="row-label">{{ t('wallet.time') || '时间' }}</span>
              <span class="row-val">{{ new Date(detail.createdAt).toLocaleString() }}</span>
            </div>
            <div class="detail-row">
              <span class="row-label">{{ t('wallet.transaction_id') || '流水号' }}</span>
              <span class="row-val mono">{{ detail.transactionId }}</span>
            </div>
          </div>
        </div>

        <div v-else class="empty-state">{{ t('common.not_found') || '未找到记录' }}</div>
      </div>
    </main>
  </div>
</template>

<style scoped>
.desktop-account-page { display: flex; flex-direction: column; min-height: 0; flex: 1; width: 100%; }

.account-main { flex: 1; min-width: 0; padding: 24px 28px; overflow-y: auto; }

.detail-layout {
  display: flex;
  flex-direction: column;
  max-width: 560px;
  margin: 0 auto;
}

.page-header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.back-btn { background: none; border: none; color: var(--text-muted); font-size: 14px; font-weight: 700; cursor: pointer; padding: 0; }
.back-btn:hover { color: var(--text); }
.page-title { font-size: 18px; font-weight: 800; color: var(--primary-light); margin: 0; }
.loading-state { display: flex; justify-content: center; align-items: center; padding: 80px 0; }
.error-state { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 80px 20px; color: var(--text-muted); }
.retry-btn { padding: 8px 24px; border-radius: 6px; border: 1px solid var(--primary); background: transparent; color: var(--primary-light); font-size: 13px; font-weight: 700; cursor: pointer; }
.empty-state { display: flex; align-items: center; justify-content: center; padding: 80px 20px; color: var(--text-muted); font-size: 14px; font-weight: 600; }

.detail-card {
  background: var(--desktop-sidebar-bg);
  border: 1px solid var(--desktop-border);
  border-radius: 12px;
  padding: 28px;
}

.amount-hero {
  font-size: 36px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-family: 'SF Mono', 'Consolas', monospace;
  line-height: 1.1;
  margin-bottom: 6px;
}

.amount-hero.pos { color: var(--primary-light); }
.amount-hero.neg { color: var(--danger); }

.type-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--desktop-border);
}

.detail-rows { display: flex; flex-direction: column; gap: 0; }

.detail-row {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.detail-row:last-child { border-bottom: none; }

.row-label { width: 120px; flex-shrink: 0; font-size: 12px; color: var(--text-muted); font-weight: 600; }
.row-val { flex: 1; font-size: 13px; font-weight: 700; color: var(--text); word-break: break-all; }
.row-val.pos { color: var(--primary-light); }
.row-val.neg { color: var(--danger); }
.mono { font-family: 'SF Mono', 'Consolas', monospace; font-size: 12px; letter-spacing: 0.03em; }
</style>
