(() => {
    const loading = document.getElementById('loading');
    const error = document.getElementById('error');
    const errorMsg = document.getElementById('errorMsg');
    const content = document.getElementById('content');
    const copyCardIdBtn = document.getElementById('copyCardIdBtn');

    const formatTime = (value) => {
        if (value == null || value === '') return '---';
        const ts = Number(value);
        const date = Number.isFinite(ts) ? new Date(ts) : new Date(value);
        return Number.isNaN(date.getTime()) ? String(value) : date.toLocaleString('zh-CN', { hour12: false });
    };

    const escapeHtml = (value) => String(value == null ? '' : value)
        .replace(/&/g, '&')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;')
        .replace(/'/g, '&#39;');

    const applyStatus = (el, text, cls) => {
        if (!el) return;
        el.textContent = text;
        el.className = cls;
    };

    const setText = (id, value) => {
        const el = document.getElementById(id);
        if (el) el.textContent = value ?? '';
    };

    const normalizeStatus = (status) => {
        const s = String(status || '').toLowerCase();
        if (s === 'active') return { text: '正常', cls: 'jr-status-pill jr-status-valid' };
        if (s === 'pending_pickup') return { text: '待领卡', cls: 'jr-status-pill jr-status-used' };
        if (s === 'disabled' || s === 'lost' || s === 'refunded') return { text: '不可用', cls: 'jr-status-pill jr-status-expired' };
        return { text: status || '未知', cls: 'jr-status-pill jr-status-expired' };
    };

    const normalizeMode = (card) => String(card?.status || '').trim().toLowerCase() === 'pending_pickup' ? 'voucher' : 'card';

    const getLookupKey = (card, fallbackCardId) => {
        const voucher = String(card?.voucher_code || card?.code || card?.order_code || '').trim();
        const rawCardId = String(card?.card_id || fallbackCardId || '').trim();
        return normalizeMode(card) === 'voucher' ? (voucher || rawCardId) : (rawCardId || voucher);
    };

    const getUsageHint = (card) => {
        const status = String(card?.status || '').trim().toLowerCase();
        if (status === 'pending_pickup') {
            return '当前仍为待领卡状态，请持凭证码前往站内售票机完成领卡。';
        }
        return '卡片已启用，可在检票机直接刷卡进出站。';
    };

    const pathParts = location.pathname.split('/').filter(Boolean);
    const cardId = decodeURIComponent(pathParts[pathParts.length - 1] || '');
    if (!cardId) {
        loading.style.display = 'none';
        error.style.display = 'block';
        errorMsg.textContent = '无效的卡号';
        return;
    }

    fetch(`/api/public/ic-cards/query?q=${encodeURIComponent(cardId)}`)
        .then((res) => res.json())
        .then((res) => {
            if (!res.ok || !res.card) {
                throw new Error(res.error || '未找到 IC 卡信息');
            }
            const card = res.card;
            const voucher = card.voucher_code || card.code || card.order_code || '---';
            const status = normalizeStatus(card.status_label || card.status);
            const shownCardId = card.display_card_id || card.card_id || cardId;
            const lookupKey = getLookupKey(card, cardId);
            const copyMode = normalizeMode(card);

            loading.style.display = 'none';
            error.style.display = 'none';
            content.style.display = 'block';

            setText('cardIdTop', shownCardId);
            setText('holderName', card.holder_name || '未登记');
            setText('cardBalance', card.balance ?? 0);
            setText('cardVoucher', voucher);
            setText('cardCreatedTs', formatTime(card.created_ts));
            setText('cardUsageHint', getUsageHint(card));
            applyStatus(document.getElementById('cardStatusTop'), status.text, status.cls);
            applyStatus(document.getElementById('cardStatusTag'), status.text, status.cls);

            const searchLink = document.getElementById('searchLink');
            if (searchLink) {
                const href = location.hostname.includes('fse-media.group')
                    ? `https://ticket.fse-media.group/ic-card/search?q=${encodeURIComponent(lookupKey)}`
                    : `/ic-card-search.html?q=${encodeURIComponent(lookupKey)}`;
                searchLink.href = href;
            }

            if (copyCardIdBtn) {
                copyCardIdBtn.innerHTML = copyMode === 'voucher'
                    ? '<i class="fas fa-copy"></i> 复制凭证码'
                    : '<i class="fas fa-copy"></i> 复制卡号';
                copyCardIdBtn.onclick = () => {
                    const copyValue = copyMode === 'voucher' ? voucher : (card.card_id || cardId);
                    navigator.clipboard.writeText(copyValue).then(() => {
                        alert(copyMode === 'voucher' ? '已复制凭证码' : '已复制卡号');
                    });
                };
            }
        })
        .catch((err) => {
            loading.style.display = 'none';
            error.style.display = 'block';
            errorMsg.textContent = err.message || String(err);
        });
})();