(() => {
    const $ = (sel) => document.querySelector(sel);
    const inputEl = $('#queryInput');
    const queryBtn = $('#queryBtn');
    const summaryBoxEl = $('#summaryBox');
    const eventBoxEl = $('#eventBox');

    const api = {
        async request(url) {
            const res = await fetch(url);
            const data = await res.json().catch(() => ({}));
            if (!res.ok || data.ok === false) {
                throw new Error(data.error || res.statusText || '请求失败');
            }
            return data;
        },
        query(q) {
            return api.request(`/api/public/ic-cards/query?q=${encodeURIComponent(q)}`);
        }
    };

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

    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 eventTitle = (event) => {
        const map = {
            create: '后台建卡',
            update: '信息更新',
            topup: '余额充值',
            order_created: '线上购卡',
            activated: '正式启用'
        };
        return map[String(event?.type || '').toLowerCase()] || (event?.type || '事件');
    };

    const renderSummary = (card) => {
        const shownCardId = card.display_card_id || card.card_id || '---';
        summaryBoxEl.className = '';
        summaryBoxEl.innerHTML = `
            <div class="jr-ticket-preview">
                <div class="jr-ticket-row-head">
                    <span class="jr-ticket-id mono">${escapeHtml(shownCardId)}</span>
                    <span class="jr-status-pill ${card.status === 'active' ? 'jr-status-valid' : (card.status === 'pending_pickup' ? 'jr-status-used' : 'jr-status-expired')}">${escapeHtml(card.status_label || card.status || '未知')}</span>
                </div>
                <div class="jr-meta-grid">
                    <div class="jr-meta-item"><span>持卡人</span><strong>${escapeHtml(card.holder_name || '未登记')}</strong></div>
                    <div class="jr-meta-item"><span>卡片类型</span><strong>IC 储值卡</strong></div>
                    <div class="jr-meta-item"><span>余额</span><strong>${escapeHtml(card.balance ?? 0)}</strong></div>
                    <div class="jr-meta-item"><span>首次充值</span><strong>${escapeHtml(card.purchase_amount ?? card.balance ?? 0)}</strong></div>
                    <div class="jr-meta-item"><span>凭证码</span><strong>${escapeHtml(card.voucher_code || card.code || card.order_code || '---')}</strong></div>
                    <div class="jr-meta-item"><span>购卡时间</span><strong>${escapeHtml(formatTime(card.created_ts))}</strong></div>
                </div>
            </div>
        `;
    };

    const renderEvents = (events) => {
        if (!events.length) {
            eventBoxEl.innerHTML = '<div class="jr-center-empty" style="min-height:180px;"><p>暂无相关事件记录。</p></div>';
            return;
        }
        eventBoxEl.innerHTML = events.map((event) => `
            <div class="jr-history-item">
                <div class="jr-history-row">
                    <span class="jr-history-title">${escapeHtml(eventTitle(event))}</span>
                    <span class="jr-history-time">${escapeHtml(formatTime(event.ts))}</span>
                </div>
                <div class="jr-history-desc">${escapeHtml(typeof event.detail === 'string' ? event.detail : JSON.stringify(event.detail || {}, null, 2))}</div>
            </div>
        `).join('');
    };

    const renderError = (message) => {
        summaryBoxEl.className = 'jr-center-empty';
        summaryBoxEl.innerHTML = `<p>${escapeHtml(message)}</p>`;
        eventBoxEl.innerHTML = '<div class="jr-center-empty" style="min-height:180px;"><p>暂无可显示的事件记录。</p></div>';
    };

    const doQuery = async () => {
        const q = inputEl.value.trim();
        if (!q) {
            renderError('请输入卡号或凭证码');
            return;
        }
        summaryBoxEl.className = 'jr-center-empty';
        summaryBoxEl.innerHTML = '<p>正在查询 IC 卡...</p>';
        eventBoxEl.innerHTML = '<div class="jr-center-empty" style="min-height:180px;"><p>正在加载事件记录...</p></div>';
        const data = await api.query(q);
        renderSummary(data.card || {});
        renderEvents(data.events || []);
        const newUrl = `${window.location.origin}${window.location.pathname}?q=${encodeURIComponent(q)}`;
        window.history.replaceState({ path: newUrl }, '', newUrl);
    };

    queryBtn.addEventListener('click', () => doQuery().catch((error) => renderError(error.message || String(error))));
    inputEl.addEventListener('keydown', (event) => {
        if (event.key === 'Enter') doQuery().catch((error) => renderError(error.message || String(error)));
    });

    const params = new URLSearchParams(location.search);
    const q = params.get('q');
    if (q) {
        inputEl.value = q;
        doQuery().catch((error) => renderError(error.message || String(error)));
    }
})();