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path: root/frontend/src/components/ProjectMetricRow.svelte
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<script lang="ts">
  // 首页指标卡行(leader round2 spec §1)
  // 数据通过 props 注入(ProjectsPage 拉取并共享聚合输入,见 dashboardMetrics.ts)。
  import { aggregateDashboard } from '../lib/dashboardMetrics';

  interface Props {
    /** 注入的聚合输入;null/undefined 视为"取不到"(占位 -) */
    projects: { id: string }[] | null;
    datasets: { id: string }[] | null;
    runs: { id: string; status: string; result?: unknown }[] | null;
    usage: { totals?: { input_tokens?: number; output_tokens?: number; requests?: number } } | null;
  }
  let { projects, datasets, runs, usage }: Props = $props();

  const metric = $derived(aggregateDashboard({ projects, datasets, runs, usage }));
</script>

<div class="metric-row" role="list" aria-label="工作台概览">
  <div class="metric-card" data-testid="metric-card" role="listitem">
    <span class="mlabel">我的项目</span>
    <span class="mvalue">{metric.projectCount}</span>
  </div>
  <div class="metric-card" data-testid="metric-card" role="listitem">
    <span class="mlabel">数据集</span>
    <span class="mvalue">{metric.datasetCount}</span>
  </div>
  <div class="metric-card" data-testid="metric-card" role="listitem">
    <span class="mlabel">回测</span>
    <span class="mvalue">
      <span class="run-split"><i>运行中</i> {metric.runningRuns}</span>
      <span class="run-split"><i>已完成</i> {metric.doneRuns}</span>
    </span>
  </div>
  <div
    class="metric-card"
    data-testid="metric-card"
    role="listitem"
    data-todo={metric.usageLabel === '-' ? 'TODO: /api/ai/usage 未返回 totals.requests(使用记录为空)时保持占位 -' : undefined}
  >
    <span class="mlabel">AI 用量</span>
    <span class="mvalue">{metric.usageLabel}</span>
    {#if metric.usageTokens}<span class="mvalue-sub">{metric.usageTokens}</span>{/if}
  </div>
</div>

<style>
  .metric-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.6rem;
    margin-bottom: 1.1rem;
  }
  .metric-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) * 1.4);
    padding: 0.65rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
    transition: box-shadow 150ms ease, transform 150ms ease;
  }
  /* 桌面端 hover 轻微上浮阴影 */
  @media (hover: hover) and (min-width: 768px) {
    .metric-card:hover {
      box-shadow: var(--shadow);
      transform: translateY(-1px);
    }
  }
  .metric-card .mvalue {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--foreground);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
    overflow-wrap: anywhere;
  }
  .run-split { display: inline-flex; align-items: baseline; gap: 0.3rem; }
  .run-split i { font-style: normal; font-size: 0.68rem; color: var(--text-3); font-weight: 500; }
  .mvalue-sub { font-size: 0.72rem; color: var(--text-3); }
</style>