// dashboard.js — ChanMacro dashboard

let regimeChart = null, breadthChart = null;

const REGIME_COLORS = { TREND: "#3fb950", RANGE: "#d29922", PANIC: "#f85149" };
const BUCKET_CLASS = { EXTREME: "bucket-EXTREME", STRONG: "bucket-STRONG",
    NORMAL: "bucket-NORMAL", WEAK: "bucket-WEAK", PANIC: "bucket-PANIC" };

async function loadState() {
  try {
    const r = await fetch("/api/state");
    const d = await r.json();
    if (d.error) { document.getElementById("db-status").textContent = d.error; return; }

    document.getElementById("db-status").textContent = "✓ " + d.date;
    document.getElementById("update-time").textContent = "更新于 " + new Date().toLocaleTimeString();

    // Hero
    const regime = d.regime;
    document.getElementById("hero-regime").textContent = regime === "TREND" ? "趋势" : regime === "RANGE" ? "震荡" : "恐慌";
    document.getElementById("hero-regime").className = "hero-regime regime-" + regime;
    document.getElementById("hero-badge").textContent = regime;
    document.getElementById("hero-badge").className = "badge-regime badge-" + regime;
    document.getElementById("hero-conf").textContent = (d.regime_confidence * 100).toFixed(0) + "%";
    document.getElementById("hero-maturity").textContent = d.regime_maturity.toFixed(0) + "/100";

    // Factors
    document.getElementById("f-price").textContent = d.price_structure.score.toFixed(0);
    document.getElementById("f-price").style.color =
      d.price_structure.score >= 60 ? "#3fb950" : d.price_structure.score >= 40 ? "#d29922" : "#f85149";
    document.getElementById("f-price-sub").textContent = d.price_structure.label;
    document.getElementById("f-price-narr").textContent = d.price_structure.narrative;

    const b = d.breadth;
    document.getElementById("f-breadth").textContent = b.score.toFixed(0);
    document.getElementById("f-breadth").setAttribute("style",
      "color: " + (b.bucket === "EXTREME" || b.bucket === "STRONG" ? "#3fb950" :
                   b.bucket === "WEAK" || b.bucket === "PANIC" ? "#f85149" :
                   b.bucket === "NORMAL" ? "#d29922" : "#e6edf3"));
    document.getElementById("f-breadth-sub").textContent =
      `${b.bucket} · T20=${b.top20.toFixed(0)} T50=${b.top50.toFixed(0)} div=${b.divergence > 0 ? "+" : ""}${b.divergence.toFixed(0)}`;
    document.getElementById("f-breadth-narr").textContent = b.narrative;

    document.getElementById("f-oi").textContent = d.oi_state;
    document.getElementById("f-oi").style.color =
      d.oi_state === "New Longs" ? "#3fb950" : d.oi_state === "New Shorts" ? "#f85149" :
      d.oi_state === "Short Covering" ? "#d29922" : d.oi_state === "Long Exit" ? "#f85149" : "#e6edf3";
    document.getElementById("f-oi-sub").textContent = `分数: ${d.oi_score.toFixed(0)}`;
    document.getElementById("f-oi-narr").textContent = d.oi_narrative;

    document.getElementById("f-vol").textContent = d.volatility;
    document.getElementById("f-vol").style.color =
      d.volatility === "LOW_VOL" ? "#58a6ff" : d.volatility === "NORMAL_VOL" ? "#e6edf3" :
      d.volatility === "HIGH_VOL" ? "#d29922" : "#f85149";
    document.getElementById("f-vol-sub").textContent = `分数: ${d.price_structure.score.toFixed(0)}`;
  } catch (e) {
    document.getElementById("db-status").textContent = "连接失败";
  }
}

async function loadHistory() {
  try {
    const r = await fetch("/api/history?days=60");
    const d = await r.json();

    // Regime chart
    const dates = d.regimes.map(x => x.date);
    const regimes = d.regimes.map(x => x.regime);
    const colors = regimes.map(r => REGIME_COLORS[r] || "#8b949e");

    if (regimeChart) regimeChart.destroy();
    const ctx1 = document.getElementById("chart-regime").getContext("2d");
    regimeChart = new Chart(ctx1, {
      type: "bar",
      data: {
        labels: dates,
        datasets: [{
          label: "置信度",
          data: d.regimes.map(x => x.confidence * 100),
          backgroundColor: colors,
          borderWidth: 0,
          borderRadius: 2,
        }]
      },
      options: {
        responsive: true,
        maintainAspectRatio: false,
        plugins: {
          legend: { display: false },
          tooltip: {
            callbacks: {
              label: ctx => `${d.regimes[ctx.dataIndex].regime} · ${ctx.raw.toFixed(0)}%`
            }
          }
        },
        scales: {
          x: { ticks: { color: "#8b949e", maxTicksLimit: 15, maxRotation: 45 } },
          y: { max: 100, ticks: { color: "#8b949e" } }
        }
      }
    });

    // Breadth chart
    if (breadthChart) breadthChart.destroy();
    const ctx2 = document.getElementById("chart-breadth").getContext("2d");
    breadthChart = new Chart(ctx2, {
      type: "line",
      data: {
        labels: d.breadth.map(x => x.date),
        datasets: [
          { label: "上涨", data: d.breadth.map(x => x.advance), borderColor: "#3fb950",
            backgroundColor: "rgba(63,185,80,0.1)", fill: true, tension: 0.3, pointRadius: 0 },
          { label: "下跌", data: d.breadth.map(x => x.decline), borderColor: "#f85149",
            backgroundColor: "rgba(248,81,73,0.1)", fill: true, tension: 0.3, pointRadius: 0 },
          { label: ">EMA20", data: d.breadth.map(x => x.above_ema20), borderColor: "#58a6ff",
            borderDash: [4, 2], tension: 0.3, pointRadius: 0 },
        ]
      },
      options: {
        responsive: true,
        maintainAspectRatio: false,
        plugins: { legend: { labels: { color: "#8b949e", usePointStyle: true, boxWidth: 8 } } },
        scales: {
          x: { ticks: { color: "#8b949e", maxTicksLimit: 15, maxRotation: 45 } },
          y: { max: 50, ticks: { color: "#8b949e" } }
        }
      }
    });
  } catch (e) {
    console.error("History load failed:", e);
  }
}

async function loadExpectancy() {
  const signal = document.getElementById("exp-signal").value;
  try {
    const r = await fetch(`/api/expectancy?signal=${signal}`);
    const d = await r.json();
    if (d.error) { document.getElementById("exp-layers").innerHTML = `<tr><td colspan="6">${d.error}</td></tr>`; return; }

    document.getElementById("exp-sufficiency").textContent = d.sufficiency;
    document.getElementById("exp-sufficiency").className =
      "badge " + (d.sufficiency === "HIGH" ? "bg-success" : d.sufficiency === "MEDIUM" ? "bg-warning" :
                  d.sufficiency === "LOW" ? "bg-danger" : "bg-secondary");

    let html = "";
    for (const l of d.layers) {
      html += `<tr>
        <td>${l.name}</td>
        <td>${l.samples}</td>
        <td>${l.effective_samples.toFixed(0)}</td>
        <td>${l.raw_winrate ? (l.raw_winrate * 100).toFixed(1) + "%" : "—"}</td>
        <td><strong>${(l.posterior_winrate * 100).toFixed(1)}%</strong></td>
        <td>${l.avg_return ? (l.avg_return > 0 ? "+" : "") + l.avg_return.toFixed(1) + "%" : "—"}</td>
      </tr>`;
    }
    document.getElementById("exp-layers").innerHTML = html;

    let summary = `最终估计: <strong>${(d.final_estimate * 100).toFixed(1)}%</strong>`;
    if (d.avg_return_7d) summary += ` · 平均收益: <strong>${d.avg_return_7d > 0 ? "+" : ""}${d.avg_return_7d.toFixed(1)}%</strong>`;
    if (d.profit_factor) summary += ` · 盈亏比: <strong>${d.profit_factor}</strong>`;
    document.getElementById("exp-summary").innerHTML = summary;
  } catch (e) {
    console.error("Expectancy load failed:", e);
  }
}

// Init
loadState();
loadHistory();
loadExpectancy();