{include file="index/layout_header" title="首页"}

<!-- 网络统计卡片 -->
<div class="row g-3 mb-4">
    <div class="col-6 col-md-3">
        <div class="card bg-black border-primary h-100">
            <div class="card-body text-center py-3">
                <div class="text-muted small mb-1">当前区块高度</div>
                <div class="fs-3 fw-bold text-primary" id="stat-block">{$stats.currentBlock|default=0}</div>
                <div class="text-muted" style="font-size:11px">CBPP 共识</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-3">
        <div class="card bg-black border-success h-100">
            <div class="card-body text-center py-3">
                <div class="text-muted small mb-1">CBPP 共识状态</div>
                <div class="fs-6 fw-bold">
                    <span class="badge {$stats.cbppBadge|default='bg-secondary'}">{$stats.cbppConsensus|default='unknown'}</span>
                </div>
                <div class="text-muted" style="font-size:11px">宪政区块生产协议</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-3">
        <div class="card bg-black border-info h-100">
            <div class="card-body text-center py-3">
                <div class="text-muted small mb-1">CSNP 网络</div>
                <div class="fs-6 fw-bold">
                    <span class="badge {$stats.csnpBadge|default='bg-secondary'}">{$stats.csnpNetwork|default='unknown'}</span>
                </div>
                <div class="text-muted" style="font-size:11px">宪政安全网络协议</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-3">
        <div class="card bg-black border-warning h-100">
            <div class="card-body text-center py-3">
                <div class="text-muted small mb-1">宪法层</div>
                <div class="fs-6 fw-bold">
                    <span class="badge {$stats.constitutionBadge|default='bg-secondary'}">{$stats.constitutionText|default='未知'}</span>
                </div>
                <div class="text-muted" style="font-size:11px">Charter 智能合约</div>
            </div>
        </div>
    </div>
</div>

<!-- 第二行统计 -->
<div class="row g-3 mb-4">
    <div class="col-6 col-md-2">
        <div class="card bg-dark border-secondary h-100">
            <div class="card-body text-center py-2">
                <div class="text-secondary small">Chain ID</div>
                <div class="fw-bold text-info">{$stats.chainId|default=20260131}</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-2">
        <div class="card bg-dark border-secondary h-100">
            <div class="card-body text-center py-2">
                <div class="text-secondary small">网络</div>
                <div class="fw-bold text-light">{$stats.network|default='mainnet'}</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-2">
        <div class="card bg-dark border-secondary h-100">
            <div class="card-body text-center py-2">
                <div class="text-secondary small">节点数</div>
                <div class="fw-bold text-light">{$stats.nodeCount|default=0}</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-2">
        <div class="card bg-dark border-secondary h-100">
            <div class="card-body text-center py-2">
                <div class="text-secondary small">总交易数</div>
                <div class="fw-bold text-light">{$stats.totalTransactions|default=0}</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-2">
        <div class="card bg-dark border-secondary h-100">
            <div class="card-body text-center py-2">
                <div class="text-secondary small">TPS</div>
                <div class="fw-bold text-light">{$stats.tps|default=0}</div>
            </div>
        </div>
    </div>
    <div class="col-6 col-md-2">
        <div class="card bg-dark border-secondary h-100">
            <div class="card-body text-center py-2">
                <div class="text-secondary small">平均出块</div>
                <div class="fw-bold text-light">{$stats.avgBlockTime|default='3.0'}s</div>
            </div>
        </div>
    </div>
</div>

<!-- 最新区块列表 -->
<div class="card bg-dark border-secondary">
    <div class="card-header d-flex justify-content-between align-items-center border-secondary">
        <span class="fw-bold">
            <span class="text-success">●</span> 最新区块
        </span>
        <a href="/blocks" class="btn btn-sm btn-outline-secondary">查看全部</a>
    </div>
    <div class="table-responsive">
        <table class="table table-dark table-hover mb-0" id="block-table">
            <thead>
                <tr class="text-secondary small">
                    <th class="ps-3">区块号</th>
                    <th>区块哈希</th>
                    <th>出块时间</th>
                    <th>交易数</th>
                    <th>出块节点</th>
                    <th>大小</th>
                </tr>
            </thead>
            <tbody id="block-tbody">
                {volist name="blocks" id="block"}
                <tr style="{if condition='$block.isHeartbeat'}background:rgba(255,193,7,0.05);{/if}">
                    <td class="ps-3">
                        <a href="/block?n={$block.number}" class="{if condition='$block.isHeartbeat'}text-warning{else}text-primary{/if} fw-bold">#{$block.number}</a>
                        {if condition='$block.isHeartbeat'}<span class="badge bg-warning text-dark ms-1" style="font-size:0.65em" title="{$block.blockTypeNote}">心跳</span>{/if}
                    </td>
                    <td>
                        <a href="/block?n={$block.number}" class="text-info font-monospace small">{$block.shortHash}</a>
                    </td>
                    <td class="text-secondary small">{$block.timeAgo}</td>
                    <td>
                        {if condition='$block.isHeartbeat'}<span class="text-warning small">心跳块</span>{else}{$block.txCount|default=0}{/if}
                    </td>
                    <td class="font-monospace small text-secondary">{$block.shortValidator}</td>
                    <td class="text-secondary small">{$block.size|default=0} B</td>
                </tr>
                {/volist}
                {empty name="blocks"}
                <tr>
                    <td colspan="6" class="text-center text-secondary py-4">
                        暂无区块数据，等待链上数据同步...
                    </td>
                </tr>
                {/empty}
            </tbody>
        </table>
    </div>
</div>

<!-- WebSocket 实时推送脚本 -->
<script>
(function() {
    var wsUrl = 'wss://' + location.host + '/ws';
    var ws, reconnectTimer;
    var tbodyEl  = document.getElementById('block-tbody');
    var statBlock = document.getElementById('stat-block');

    function shortHash(h, f, b) {
        f = f || 10; b = b || 8;
        if (!h || h.length <= f + b + 3) return h || 'N/A';
        return h.substring(0, f) + '...' + h.substring(h.length - b);
    }
    function timeAgo(ts) {
        var diff = Math.floor(Date.now()/1000) - ts;
        if (diff < 60) return diff + ' 秒前';
        if (diff < 3600) return Math.floor(diff/60) + ' 分钟前';
        return Math.floor(diff/3600) + ' 小时前';
    }

    function connect() {
        try {
            ws = new WebSocket(wsUrl);
            ws.onopen = function() { clearTimeout(reconnectTimer); };
            ws.onmessage = function(e) {
                try {
                    var data = JSON.parse(e.data);
                    if (data.type === 'new_block' && data.block) {
                        prependBlock(data.block);
                        if (statBlock) statBlock.textContent = data.block.number;
                    }
                } catch(err) {}
            };
            ws.onclose = function() { reconnectTimer = setTimeout(connect, 5000); };
            ws.onerror = function() { ws.close(); };
        } catch(e) {}
    }

    function prependBlock(block) {
        if (!tbodyEl) return;
        // 移除"暂无数据"行
        tbodyEl.querySelectorAll('td[colspan]').forEach(function(td) { td.parentNode.remove(); });
        // 限制最多20行
        var rows = tbodyEl.querySelectorAll('tr');
        if (rows.length >= 20) rows[rows.length - 1].remove();

        var isHb = block.isHeartbeat || block.blockType === 'heartbeat';
        var tr = document.createElement('tr');
        tr.className = 'table-active';
        tr.style.background = isHb ? 'rgba(255,193,7,0.05)' : '';
        var numColor = isHb ? 'text-warning' : 'text-primary';
        var hbBadge = isHb ? '<span class="badge bg-warning text-dark ms-1" style="font-size:0.65em" title="CBPP 宪法原则四：无交易时每60秒产生心跳块">心跳</span>' : '';
        var txCell = isHb ? '<span class="text-warning small">心跳块</span>' : (block.txCount || 0);
        tr.innerHTML = '<td class="ps-3"><a href="/block?n=' + block.number + '" class="' + numColor + ' fw-bold">#' + block.number + '</a>' + hbBadge + '</td>'
            + '<td><a href="/block?n=' + block.number + '" class="text-info font-monospace small">' + shortHash(block.hash) + '</a></td>'
            + '<td class="text-secondary small">' + timeAgo(block.timestamp) + '</td>'
            + '<td>' + txCell + '</td>'
            + '<td class="font-monospace small text-secondary">' + shortHash(block.validator, 8, 6) + '</td>'
            + '<td class="text-secondary small">' + (block.size || 0) + ' B</td>';
        tbodyEl.insertBefore(tr, tbodyEl.firstChild);
        setTimeout(function() { tr.className = ''; }, 2000);
    }

    connect();
})();
</script>

{include file="index/layout_footer"}