quantum-hello-world/server.js at main · ItamarIliuk/quantum-hello-world · GitHub

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// @ts-check
const http = require("http");
const path = require("path");
const { spawnSync } = require("child_process");

const PORT = 3741;

// ─── Executa o circuito Python ──────────────────────────────────────────────
function runQuantumCircuit() {
  const scriptPath = path.join(__dirname, "quantum_circuit.py");
  const result = spawnSync("python", [scriptPath], { encoding: "utf8" });
  if (result.status !== 0) throw new Error(result.stderr);
  return JSON.parse(result.stdout.trim());
}

// ─── Gera barra de progresso SVG ────────────────────────────────────────────
function progressBar(pct, color) {
  const w = Math.round(pct * 3.2); // max ~320px
  return `<div class="bar-wrap">
    <div class="bar" style="width:${w}px;background:${color};"></div>
    <span>${pct.toFixed(1)}%</span>
  </div>`;
}

// ─── Gera HTML completo ──────────────────────────────────────────────────────
function buildHTML(data) {
  const counts = data.counts;
  const probs  = data.probabilities;
  const total  = data.shots;
  const states = Object.keys(counts).sort();

  const stateColors = {
    "00": "#4ade80",
    "11": "#60a5fa",
    "01": "#f87171",
    "10": "#facc15",
  };

  const barsHTML = states.map(s => {
    const pct   = (counts[s] / total) * 100;
    const color = stateColors[s] || "#a78bfa";
    return `
      <div class="state-row">
        <div class="state-label">|${s}⟩</div>
        ${progressBar(pct, color)}
        <div class="state-count">${counts[s]} shots</div>
      </div>`;
  }).join("");

  const gatesHTML = Object.entries(data.gates).map(([g, d]) => `
    <div class="gate-card">
      <span class="gate-name">${g}</span>
      <span class="gate-desc">${d}</span>
    </div>`).join("");

  return `<!DOCTYPE html>
<html lang="pt-BR">
<head>
  <meta charset="UTF-8"/>
  <meta name="viewport" content="width=device-width,initial-scale=1"/>
  <title>⚛ Simulador Quântico — Hello World</title>
  <style>
    :root {
      --bg:       #0a0e1a;
      --card:     #111827;
      --border:   #1e3a5f;
      --cyan:     #22d3ee;
      --yellow:   #facc15;
      --green:    #4ade80;
      --blue:     #60a5fa;
      --purple:   #a78bfa;
      --text:     #e2e8f0;
      --muted:    #64748b;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'Segoe UI', system-ui, sans-serif;
      min-height: 100vh;
      padding: 2rem;
    }

    /* ── Header ── */
    .header {
      text-align: center;
      margin-bottom: 2.5rem;
    }
    .header h1 {
      font-size: 2.4rem;
      background: linear-gradient(135deg, var(--cyan), var(--yellow));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: 0.04em;
    }
    .header p { color: var(--muted); margin-top: .5rem; font-size: .95rem; }

    /* ── Grid ── */
    .grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
      max-width: 1000px;
      margin: 0 auto;
    }
    @media (max-width: 720px) { .grid { grid-template-columns: 1fr; } }
    .full { grid-column: 1 / -1; }

    /* ── Card ── */
    .card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 1rem;
      padding: 1.5rem;
    }
    .card-title {
      font-size: .75rem;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 1rem;
    }

    /* ── Circuito ASCII ── */
    .circuit-wrap {
      overflow-x: auto;
    }
    pre.circuit {
      font-family: 'Cascadia Code', 'Fira Code', 'Courier New', monospace;
      font-size: 1rem;
      color: var(--cyan);
      line-height: 1.6;
      white-space: pre;
    }

    /* ── Stats ── */
    .stats { display: flex; gap: 2rem; flex-wrap: wrap; }
    .stat  { text-align: center; }
    .stat .val {
      font-size: 2rem;
      font-weight: 700;
      color: var(--yellow);
    }
    .stat .lbl { font-size: .8rem; color: var(--muted); margin-top: .2rem; }

    /* ── Histograma ── */
    .state-row {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: .85rem;
    }
    .state-label {
      font-family: monospace;
      font-size: 1.1rem;
      color: var(--text);
      min-width: 3rem;
    }
    .bar-wrap { display: flex; align-items: center; gap: .6rem; flex: 1; }
    .bar {
      height: 28px;
      border-radius: 4px;
      transition: width .5s ease;
      min-width: 4px;
    }
    .bar-wrap span { font-size: .9rem; color: var(--text); white-space: nowrap; }
    .state-count { font-size: .8rem; color: var(--muted); white-space: nowrap; }

    /* ── Portas ── */
    .gate-card {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding: .7rem 0;
      border-bottom: 1px solid var(--border);
    }
    .gate-card:last-child { border-bottom: none; }
    .gate-name {
      background: #1e3a5f;
      color: var(--cyan);
      font-family: monospace;
      font-weight: 700;
      padding: .3rem .7rem;
      border-radius: .4rem;
      min-width: 3.5rem;
      text-align: center;
    }
    .gate-desc { color: var(--muted); font-size: .9rem; }

    /* ── Bell state ── */
    .bell {
      font-family: 'Segoe UI', sans-serif;
      font-size: 1.3rem;
      text-align: center;
      color: var(--text);
      line-height: 2.2;
    }
    .bell strong { color: var(--cyan); }
    .ket { color: var(--green); font-family: monospace; }

    /* ── Hello World banner ── */
    .hw-banner {
      text-align: center;
      padding: 1.5rem 0;
    }
    .hw-banner .title {
      font-size: 2rem;
      font-weight: 900;
      background: linear-gradient(90deg, var(--yellow), var(--cyan), var(--purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: .05em;
    }
    .hw-banner .sub {
      margin-top: .6rem;
      color: var(--purple);
      font-size: 1rem;
    }
    .atom { font-size: 2.5rem; animation: spin 6s linear infinite; display: inline-block; }
    @keyframes spin {
      0%   { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    /* ── Reload ── */
    .reload-btn {
      display: block;
      margin: 1.5rem auto 0;
      padding: .6rem 2rem;
      border: 1px solid var(--cyan);
      background: transparent;
      color: var(--cyan);
      border-radius: .5rem;
      cursor: pointer;
      font-size: .95rem;
      letter-spacing: .05em;
      transition: background .2s;
    }
    .reload-btn:hover { background: #0e3047; }
  </style>
</head>
<body>

<div class="header">
  <h1>⚛ Simulador Quântico</h1>
  <p>TypeScript + Qiskit (Python) &nbsp;·&nbsp; Estado Bell Phi+ &nbsp;·&nbsp; ${total} shots</p>
</div>

<div class="grid">

  <!-- Hello World -->
  <div class="card full hw-banner">
    <div class="atom">⚛</div>
    <div class="title">Hello, Quantum World!</div>
    <div class="sub">Superposição + Emaranhamento Quântico demonstrados com sucesso</div>
  </div>

  <!-- Circuito -->
  <div class="card full">
    <div class="card-title">Circuito Quântico</div>
    <div class="circuit-wrap">
      <pre class="circuit">${data.circuit_ascii.replace(/</g,"&lt;")}</pre>
    </div>
  </div>

  <!-- Stats -->
  <div class="card">
    <div class="card-title">Estatísticas</div>
    <div class="stats">
      <div class="stat"><div class="val">${data.num_qubits}</div><div class="lbl">Qubits</div></div>
      <div class="stat"><div class="val">${data.depth}</div><div class="lbl">Profundidade</div></div>
      <div class="stat"><div class="val">${total.toLocaleString()}</div><div class="lbl">Shots</div></div>
      <div class="stat"><div class="val">${states.length}</div><div class="lbl">Estados</div></div>
    </div>
  </div>

  <!-- Portas -->
  <div class="card">
    <div class="card-title">Portas Utilizadas</div>
    ${gatesHTML}
  </div>

  <!-- Histograma -->
  <div class="card full">
    <div class="card-title">Histograma de Medições</div>
    ${barsHTML}
  </div>

  <!-- Bell state -->
  <div class="card full">
    <div class="card-title">Interpretação Física — Estado Bell Φ⁺</div>
    <div class="bell">
      <strong>|Ψ⟩</strong> = <span style="color:var(--yellow)">1/√2</span>
      <span class="ket">|00⟩</span>
      +
      <span style="color:var(--yellow)">1/√2</span>
      <span class="ket">|11⟩</span>
      <br>
      Os dois qubits estão <strong>emaranhados</strong>: ao medir um, o outro
      colapsa <em>instantaneamente</em> para o mesmo estado.
      <br>
      Resultados possíveis: apenas <span class="ket">|00⟩</span>
      (${(probs["00"]||0).toFixed(1)}%) ou
      <span class="ket">|11⟩</span> (${(probs["11"]||0).toFixed(1)}%) —
      nunca opostos.
    </div>
    <button class="reload-btn" onclick="location.reload()">↻ Nova simulação</button>
  </div>

</div>
</body>
</html>`;
}

// ─── Servidor HTTP ───────────────────────────────────────────────────────────
const server = http.createServer((req, res) => {
  if (req.url !== "/") {
    res.writeHead(404);
    res.end("Not found");
    return;
  }
  try {
    const data = runQuantumCircuit();
    const html = buildHTML(data);
    res.writeHead(200, { "Content-Type": "text/html; charset=utf-8" });
    res.end(html);
  } catch (err) {
    res.writeHead(500, { "Content-Type": "text/plain; charset=utf-8" });
    res.end("Erro ao executar circuito:\n" + err.message);
  }
});

server.listen(PORT, () => {
  console.log(`Servidor quântico rodando em http://localhost:${PORT}`);
});