(function () {
    var list = document.getElementById('position-live-list');
    var pollTimer = null;

    function fmtNum(v, digits) {
        if (v === null || v === undefined) return '--';
        return Number(v).toFixed(digits === undefined ? 2 : digits);
    }

    function buildPosCard(row) {
        var pnlClass = '';
        if (row.float_pnl > 0) pnlClass = 'pnl-pos';
        if (row.float_pnl < 0) pnlClass = 'pnl-neg';
        var pnlText = '--';
        if (row.float_pnl != null) {
            var sign = row.float_pnl >= 0 ? '+' : '';
            pnlText = sign + fmtNum(row.float_pnl) + '元';
            if (row.float_pct != null) {
                pnlText += ' (' + sign + fmtNum(row.float_pct) + '%)';
            }
        }
        var rr = row.rr_ratio != null ? row.rr_ratio + ':1' : '--';
        var openT = (row.open_time || '').replace('T', ' ').slice(0, 16);
        var dirBadge = row.direction_label || (row.direction === 'long' ? '做多' : '做空');
        var closeBtn = '';

        if (row.close_url) {
            closeBtn =
                '<form method="post" action="' + row.close_url + '" style="display:inline" onsubmit="return confirm(\'确认平仓？\')">' +
                '<button type="submit" class="btn-del pos-del">平仓</button></form>';
        } else if (row.can_close) {
            closeBtn =
                '<button type="button" class="btn-del pos-del" data-close=\'' + JSON.stringify({
                    source: row.source,
                    symbol_code: row.symbol_code,
                    direction: row.direction,
                    lots: row.lots,
                    mark_price: row.mark_price,
                    monitor_id: row.monitor_id || null
                }) + '\'>平仓</button>';
        }

        var metaParts = ['来源 <strong>' + (row.source_label || row.source) + '</strong>'];
        if (row.risk_pct != null) {
            metaParts.push('风险 <strong>' + fmtNum(row.risk_pct) + '%≈' + fmtNum(row.risk_amount) + '元</strong>');
        }
        if (row.tick_value_total != null) {
            metaParts.push('每跳 <strong>' + fmtNum(row.tick_value_total) + '元</strong>');
        }

        var slTp =
            '<div class="cell"><label>止损</label><div>' + (row.stop_loss != null ? fmtNum(row.stop_loss) : '--') + '</div></div>' +
            '<div class="cell"><label>止盈</label><div>' + (row.take_profit != null ? fmtNum(row.take_profit) : '--') + '</div></div>';

        var footerParts = ['张数 ' + row.lots];
        if (row.margin != null) footerParts.push('保证金 ' + fmtNum(row.margin) + '元');
        if (row.position_pct != null) footerParts.push('仓位占比 ' + fmtNum(row.position_pct) + '%');
        if (openT) footerParts.push('开仓 ' + openT);
        if (row.holding_duration) footerParts.push('持仓 ' + row.holding_duration);
        if (row.est_fee != null) footerParts.push('手续费(估) ' + fmtNum(row.est_fee) + '元');

        return (
            '<div class="pos-card" data-key="' + (row.key || '') + '">' +
            '<div class="pos-card-head">' +
            '<div><div class="title">' + row.symbol + ' <span class="badge dir">' + dirBadge + '</span></div>' +
            (row.symbol_code && row.symbol_code !== row.symbol ? '<div class="text-muted" style="font-size:.72rem;margin-top:.15rem">' + row.symbol_code + '</div>' : '') +
            '</div>' + closeBtn + '</div>' +
            '<div class="pos-card-meta">' + metaParts.join(' · ') + '</div>' +
            '<div class="pos-metrics">' +
            '<div class="cell"><label>成交价</label><div>' + fmtNum(row.entry_price) + '</div></div>' +
            slTp +
            '<div class="cell"><label>盈亏比</label><div>' + rr + '</div></div>' +
            '<div class="cell"><label>标记价</label><div>' + (row.mark_price != null ? fmtNum(row.mark_price) : '--') + '</div></div>' +
            '<div class="cell ' + pnlClass + '"><label>浮盈亏</label><div>' + pnlText + '</div></div>' +
            (row.est_fee != null ?
                '<div class="cell"><label>预估手续费</label><div>' + fmtNum(row.est_fee) + '元</div></div>' +
                '<div class="cell ' + (row.est_pnl_net > 0 ? 'pnl-pos' : (row.est_pnl_net < 0 ? 'pnl-neg' : '')) + '">' +
                '<label>扣费后</label><div>' + (row.est_pnl_net != null ? fmtNum(row.est_pnl_net) + '元' : '--') + '</div></div>'
                : '') +
            '</div>' +
            '<div class="pos-footer">' + footerParts.map(function (s) { return '<span>' + s + '</span>'; }).join('') + '</div>' +
            '</div>'
        );
    }

    function closePosition(payload) {
        var price = payload.mark_price;
        if (!price || price <= 0) {
            alert('无法获取现价，请稍后重试');
            return;
        }
        if (!confirm('确认以 ' + price + ' 限价平仓 ' + payload.lots + ' 手？')) return;
        fetch('/api/trading/close', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                source: payload.source,
                symbol_code: payload.symbol_code,
                direction: payload.direction,
                lots: payload.lots,
                price: price,
                monitor_id: payload.monitor_id
            })
        }).then(function (r) { return r.json(); }).then(function (d) {
            if (!d.ok) { alert(d.error || '平仓失败'); return; }
            pollPositions();
        }).catch(function () { alert('平仓请求失败'); });
    }

    function pollPositions() {
        if (!list) return;
        fetch('/api/trading/live')
            .then(function (r) { return r.json(); })
            .then(function (data) {
                var cap = document.getElementById('cap-display');
                if (cap && data.capital != null) cap.textContent = Number(data.capital).toFixed(2);
                var recCap = document.getElementById('rec-capital');
                if (recCap && data.capital != null) recCap.textContent = Number(data.capital).toFixed(2);
                var riskBadge = document.getElementById('risk-badge');
                if (riskBadge && data.risk_status) {
                    riskBadge.textContent = data.risk_status.status_label;
                    riskBadge.className = 'badge ' + (data.risk_status.can_trade ? 'profit' : 'loss');
                }
                var ctpBadge = document.getElementById('ctp-badge');
                if (ctpBadge && data.ctp_status) {
                    ctpBadge.textContent = data.ctp_status.connected ? 'CTP 已连接' : 'CTP 未连接';
                    ctpBadge.className = 'badge ' + (data.ctp_status.connected ? 'profit' : 'planned');
                }
                var rows = data.rows || [];
                if (!rows.length) {
                    list.innerHTML = '<div class="empty-hint">暂无持仓。请通过上方「期货下单 → 策略交易」开仓，或连接 CTP 同步柜台持仓。</div>';
                    return;
                }
                list.innerHTML = rows.map(buildPosCard).join('');
                list.querySelectorAll('[data-close]').forEach(function (btn) {
                    btn.addEventListener('click', function () {
                        closePosition(JSON.parse(btn.getAttribute('data-close')));
                    });
                });
            })
            .catch(function () {
                if (list.innerHTML.indexOf('pos-card') < 0) {
                    list.innerHTML = '<div class="empty-hint text-loss">加载失败，请刷新页面</div>';
                }
            });
    }

    var btnConnect = document.getElementById('btn-ctp-connect');
    if (btnConnect) {
        btnConnect.addEventListener('click', function () {
            btnConnect.disabled = true;
            btnConnect.textContent = '连接中…';
            fetch('/api/ctp/connect', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: '{}' })
                .then(function (r) { return r.json(); })
                .then(function (d) {
                    if (!d.ok) { alert(d.error || '连接失败'); return; }
                    location.reload();
                })
                .finally(function () {
                    btnConnect.disabled = false;
                    btnConnect.textContent = '连接 CTP';
                });
        });
    }

    document.addEventListener('DOMContentLoaded', function () {
        pollPositions();
        pollTimer = setInterval(pollPositions, 2000);
    });
})();