{% extends "layout.html" %}
{% block body %}
<div class="page-head">
  <div>
    <h1>Statistik</h1>
    <p class="tiny">Auslastung, Verbrauch und Erfolgsquote aus dem Protokoll.</p>
  </div>
  <div class="page-head-side">
    <a class="ghost" id="csv-link" href="/api/v1/statistik.csv">CSV</a>
  </div>
</div>
<div class="toolbar page-tools stat-tools">
  <div class="segmented period-presets fchips" id="period" role="group" aria-label="Zeitraum">
    <button type="button" data-period="all" class="fchip on">Alles</button>
    <button type="button" data-period="day" class="fchip">Tag</button>
    <button type="button" data-period="week" class="fchip">Woche</button>
    <button type="button" data-period="month" class="fchip">Monat</button>
    <button type="button" data-period="yesterday" class="fchip">Gestern</button>
    <button type="button" data-period="last_week" class="fchip">Letzte Woche</button>
    <button type="button" data-period="last_month" class="fchip">Letzter Monat</button>
  </div>
  <details class="stat-more">
    <summary>Weitere Filter</summary>
    <div class="stat-filters">
      <input type="date" id="since" title="Von" class="date-field">
      <input type="date" id="until" title="Bis" class="date-field">
      <select id="host"><option value="">Alle Drucker</option></select>
      <select id="project"><option value="">Alle Projekte</option></select>
      <input type="text" id="material" placeholder="Sorte" size="8" autocomplete="off">
      <input type="text" id="brand" placeholder="Marke" size="8" autocomplete="off">
      <input type="text" id="color" placeholder="Farbe" size="8" autocomplete="off">
    </div>
  </details>
</div>
<p id="stat-note"></p>
<div id="stat" class="statistik"></div>
{% endblock %}
{% block script %}
<script>
function kpi(label, value, hint, ico, extraClass) {
  const empty = !value || value === "—" || value === "0 %";
  const cls = ["kpi", extraClass || "", empty ? "kpi-empty" : ""].filter(Boolean).join(" ");
  return `<div class="${cls}"><div class="kpi-label">${ico ? icon(ico) : ""}${escapeHtml(label)}</div><div class="kpi-value">${value}</div>${hint ? '<div class="kpi-sub">' + escapeHtml(hint) + "</div>" : ""}</div>`;
}

function isoDate(date) {
  const y = date.getFullYear();
  const m = String(date.getMonth() + 1).padStart(2, "0");
  const d = String(date.getDate()).padStart(2, "0");
  return y + "-" + m + "-" + d;
}

function startOfWeek(date) {
  const day = date.getDay();
  const mondayOffset = day === 0 ? -6 : 1 - day;
  const start = new Date(date.getFullYear(), date.getMonth(), date.getDate() + mondayOffset);
  return start;
}

function periodRange(key) {
  const today = new Date();
  today.setHours(0, 0, 0, 0);
  if (key === "all") return { since: "", until: "" };
  if (key === "day") return { since: isoDate(today), until: isoDate(today) };
  if (key === "yesterday") {
    const day = new Date(today);
    day.setDate(day.getDate() - 1);
    return { since: isoDate(day), until: isoDate(day) };
  }
  if (key === "week") {
    const start = startOfWeek(today);
    const end = new Date(start);
    end.setDate(end.getDate() + 6);
    return { since: isoDate(start), until: isoDate(end) };
  }
  if (key === "last_week") {
    const start = startOfWeek(today);
    start.setDate(start.getDate() - 7);
    const end = new Date(start);
    end.setDate(end.getDate() + 6);
    return { since: isoDate(start), until: isoDate(end) };
  }
  if (key === "month") {
    const start = new Date(today.getFullYear(), today.getMonth(), 1);
    const end = new Date(today.getFullYear(), today.getMonth() + 1, 0);
    return { since: isoDate(start), until: isoDate(end) };
  }
  if (key === "last_month") {
    const start = new Date(today.getFullYear(), today.getMonth() - 1, 1);
    const end = new Date(today.getFullYear(), today.getMonth(), 0);
    return { since: isoDate(start), until: isoDate(end) };
  }
  return { since: "", until: "" };
}

function setPeriodActive(key) {
  document.querySelectorAll("#period [data-period]").forEach((btn) => {
    btn.classList.toggle("on", btn.dataset.period === key);
  });
}

function clearPeriodActive() {
  document.querySelectorAll("#period [data-period]").forEach((btn) => btn.classList.remove("on"));
}

function fillPrinters(rows) {
  const select = document.getElementById("host");
  const current = select.value;
  const known = new Set([...select.options].map((o) => o.value));
  (rows || []).forEach((row) => {
    if (!row.printer_host || known.has(row.printer_host)) return;
    const opt = document.createElement("option");
    opt.value = row.printer_host;
    opt.textContent = row.printer_name || row.printer_host;
    select.appendChild(opt);
    known.add(row.printer_host);
  });
  if ([...select.options].some((o) => o.value === current)) select.value = current;
}

function barChart(items, valueKey, labelFn) {
  const rows = (items || []).filter((item) => Number(item[valueKey]) > 0);
  if (!rows.length) return '<p class="empty">Keine Werte fürs Diagramm.</p>';
  const max = Math.max(...rows.map((item) => Number(item[valueKey]) || 0)) || 1;
  return `<div class="bar-chart" role="img">${rows.map((item) => {
    const value = Number(item[valueKey]) || 0;
    const pct = Math.max(4, Math.round(100 * value / max));
    return `<div class="bar-row">
      <span class="bar-label">${escapeHtml(labelFn(item))}</span>
      <span class="bar-track"><span class="bar-fill" style="width:${pct}%"></span></span>
      <span class="bar-val">${escapeHtml(String(item._barLabel || value))}</span>
    </div>`;
  }).join("")}</div>`;
}

function render(data) {
  fillPrinters(data.by_printer);
  const o = data.overview || {};
  const jobs = o.jobs || 0;
  const success = jobs ? Math.round(100 * (o.completed || 0) / jobs) : 0;
  const scrap = jobs ? Math.round(100 * (o.scrap || 0) / jobs) : 0;
  const ratio = data.estimate_ratio != null
    ? (data.estimate_ratio * 100).toFixed(0) + " %"
    : "—";

  if (!jobs) {
    document.getElementById("stat").innerHTML = `
      <div class="empty-state">
        <svg class="ico"><use href="#i-grid"/></svg>
        <p>Keine Läufe im gewählten Zeitraum.</p>
        <a class="ghost" href="/protokoll">Protokoll →</a>
      </div>`;
    return;
  }

  const printers = (data.by_printer || []).map((p) => `
    <tr>
      <td>${escapeHtml(p.printer_name || p.printer_host)}</td>
      <td class="num">${p.jobs}</td>
      <td class="num">${hours(p.duration_s)}</td>
      <td class="num">${grams(p.weight_g)}</td>
      <td class="num">${euro(p.cost)}</td>
      <td class="num">${p.completed}</td>
    </tr>`).join("") || '<tr><td class="empty" colspan="6">Keine Daten.</td></tr>';

  const reasons = (data.scrap_reasons || []).map((r) => `
    <tr>
      <td>${escapeHtml(r.reason || "—")}</td>
      <td class="num">${r.count}</td>
    </tr>`).join("") || '<tr><td class="empty" colspan="2">Kein Ausschuss im Zeitraum.</td></tr>';

  const materials = (data.by_material || []).map((m) => `
    <tr>
      <td>${escapeHtml(m.material_type || "—")}</td>
      <td>${escapeHtml(m.brand || "")}</td>
      <td>${escapeHtml(m.color || "")}</td>
      <td class="num">${grams(m.weight_g)}</td>
      <td class="num">${euro(m.cost)}</td>
      <td class="num">${m.jobs}</td>
    </tr>`).join("") || '<tr><td class="empty" colspan="6">Kein Spulenabzug im Zeitraum.</td></tr>';

  const chartPrinters = (data.by_printer || []).map((p) => ({
    ...p,
    _barLabel: hours(p.duration_s),
  }));
  const chartMaterials = (data.by_material || []).map((m) => ({
    ...m,
    _barLabel: grams(m.weight_g),
  }));

  document.getElementById("stat").innerHTML = `
    <div class="kpi-row kpi-primary">
      ${kpi("Läufe", String(jobs), "", "layers")}
      ${kpi("Druckzeit", hours(o.duration_s), "", "clock")}
      ${kpi("Verbrauch", grams(o.weight_g), "", "weight")}
      ${kpi("Kosten", euro(o.cost), "", "euro")}
      ${kpi("Erfolg", success + " %", (o.completed || 0) + " fertig · " + (o.failed || 0) + " abgebrochen", "circle-check")}
    </div>
    <div class="kpi-row kpi-secondary">
      ${kpi("Ausschuss", scrap + " %", (o.scrap || 0) + " mit Urteil Ausschuss", "ban", "kpi-sm")}
      ${kpi("Stück-Yield", o.yield_percent != null ? Math.round(o.yield_percent) + " %" : "—", (o.pieces_ok || 0) + " gut · " + (o.pieces_bad || 0) + " schlecht", "percent", "kpi-sm")}
      ${kpi("€ / Teil", o.cost_per_part != null ? euro(o.cost_per_part) : "—", "Material + Strom ÷ gut", "tag", "kpi-sm")}
      ${kpi("Schätztreue", ratio, data.estimate_count ? data.estimate_count + " Läufe mit Soll-Zeit" : "keine Soll-Zeit", "gauge", "kpi-sm")}
    </div>
    <div class="split">
      <div class="card">
        <h2>Druckzeit je Drucker</h2>
        ${barChart(chartPrinters, "duration_s", (p) => p.printer_name || p.printer_host || "—")}
      </div>
      <div class="card">
        <h2>Verbrauch je Material</h2>
        ${barChart(chartMaterials, "weight_g", (m) => [m.material_type, m.brand, m.color].filter(Boolean).join(" · ") || "—")}
      </div>
    </div>
    <div class="card">
      <h2>Nach Drucker</h2>
      <div class="table-wrap"><table>
        <thead><tr><th>Drucker</th><th>Läufe</th><th>Zeit</th><th>Gramm</th><th>Kosten</th><th>Fertig</th></tr></thead>
        <tbody>${printers}</tbody>
      </table></div>
    </div>
    <div class="card">
      <h2>Ausschuss-Gründe</h2>
      <div class="table-wrap"><table>
        <thead><tr><th>Grund</th><th>Anzahl</th></tr></thead>
        <tbody>${reasons}</tbody>
      </table></div>
    </div>
    <div class="card">
      <h2>Nach Material</h2>
      <div class="table-wrap"><table>
        <thead><tr><th>Sorte</th><th>Marke</th><th>Farbe</th><th>Gramm</th><th>Kosten</th><th>Läufe</th></tr></thead>
        <tbody>${materials}</tbody>
      </table></div>
    </div>`;
}

async function fillProjects() {
  const select = document.getElementById("project");
  if (!select || select.dataset.filled) return;
  try {
    const rows = await api("/projekte?status=");
    const current = select.value;
    rows.forEach((p) => {
      const opt = document.createElement("option");
      opt.value = p.id;
      opt.textContent = p.name;
      select.appendChild(opt);
    });
    select.dataset.filled = "1";
    if ([...select.options].some((o) => o.value === current)) select.value = current;
  } catch (error) { /* optional */ }
}

async function load() {
  await fillProjects();
  const params = new URLSearchParams();
  const since = document.getElementById("since").value;
  const until = document.getElementById("until").value;
  const host = document.getElementById("host").value;
  const project = document.getElementById("project").value;
  const material = document.getElementById("material").value.trim();
  const brand = document.getElementById("brand").value.trim();
  const color = document.getElementById("color").value.trim();
  if (since) params.set("since", since);
  if (until) params.set("until", until);
  if (host) params.set("host", host);
  if (project) params.set("project_id", project);
  if (material) params.set("material", material);
  if (brand) params.set("brand", brand);
  if (color) params.set("color", color);
  const q = params.toString();
  document.getElementById("csv-link").href = "/api/v1/statistik.csv" + (q ? "?" + q : "");
  const data = await api("/statistik" + (q ? "?" + q : ""));
  render(data);
}

let filterTimer = null;
function scheduleLoad() {
  clearTimeout(filterTimer);
  filterTimer = setTimeout(() => load().catch((error) => showNote("stat-note", error)), 280);
}

function applyPeriod(key) {
  const range = periodRange(key);
  document.getElementById("since").value = range.since;
  document.getElementById("until").value = range.until;
  setPeriodActive(key);
  load().catch((error) => showNote("stat-note", error));
}

document.getElementById("period").addEventListener("click", (event) => {
  const button = event.target.closest("[data-period]");
  if (!button) return;
  applyPeriod(button.dataset.period);
});

["since", "until"].forEach((id) => {
  document.getElementById(id).addEventListener("change", () => {
    clearPeriodActive();
    scheduleLoad();
  });
});
document.getElementById("host").addEventListener("change", scheduleLoad);
document.getElementById("project").addEventListener("change", scheduleLoad);
["material", "brand", "color"].forEach((id) => {
  const node = document.getElementById(id);
  if (!node) return;
  node.addEventListener("input", scheduleLoad);
  node.addEventListener("change", scheduleLoad);
});
load().catch((error) => showNote("stat-note", error));
</script>
{% endblock %}