// collecte.js — page "Collecte" : historique des exécutions de tâches de
// collecte (cron quotidien + backfill historique), détail des erreurs par
// exécution, et acquittement manuel.

let currentRuns = [];

async function loadRuns() {
  const res = await fetch("/api/collection-runs");
  if (!res.ok) throw new Error(`API collection-runs: HTTP ${res.status}`);
  return res.json();
}

function runTypeLabel(type) {
  return type === "backfill" ? "Historique (backfill)" : "Journalière";
}

function formatDateTime(iso) {
  if (!iso) return "—";
  return new Intl.DateTimeFormat("fr-FR", { dateStyle: "medium", timeStyle: "short" }).format(new Date(iso));
}

function formatDuration(startIso, endIso) {
  if (!startIso || !endIso) return "—";
  const seconds = Math.max(0, Math.round((new Date(endIso) - new Date(startIso)) / 1000));
  if (seconds < 60) return `${seconds} s`;
  return `${Math.floor(seconds / 60)} min ${seconds % 60} s`;
}

function statusBadge(run) {
  if (run.tenants_error === 0) {
    return `<span class="status-label"><span class="status-dot ok"></span>OK</span>`;
  }
  if (run.acknowledged_at) {
    return `<span class="status-label"><span class="status-dot warning"></span>Erreurs (acquittées)</span>`;
  }
  return `<span class="status-label"><span class="status-dot error"></span>Erreurs</span>`;
}

function renderRunsTable() {
  const wrap = document.getElementById("runs-table-wrap");

  if (currentRuns.length === 0) {
    wrap.innerHTML = `<div class="empty-state">Aucune exécution enregistrée pour l'instant. Lance <code>collect.py</code> ou <code>backfill_historical.py</code>.</div>`;
    return;
  }

  const rows = currentRuns
    .map(
      (r) => `
      <tr class="clickable" data-id="${r.id}">
        <td>${runTypeLabel(r.run_type)}</td>
        <td>${formatDateTime(r.started_at)}</td>
        <td>${formatDuration(r.started_at, r.finished_at)}</td>
        <td class="num">${r.tenants_ok}</td>
        <td class="num">${r.tenants_error}</td>
        <td>${statusBadge(r)}</td>
      </tr>`
    )
    .join("");

  wrap.innerHTML = `
    <table class="data-table">
      <thead>
        <tr>
          <th>Type</th>
          <th>Démarrée</th>
          <th>Durée</th>
          <th class="num">OK</th>
          <th class="num">Erreurs</th>
          <th>Statut</th>
        </tr>
      </thead>
      <tbody>${rows}</tbody>
    </table>`;

  wrap.querySelectorAll("tr.clickable").forEach((tr) => {
    tr.addEventListener("click", () => openRunDrawer(Number(tr.dataset.id)));
  });
}

function openRunDrawer(runId) {
  const run = currentRuns.find((r) => r.id === runId);
  if (!run) return;

  document.getElementById("drawer-title").textContent = `${runTypeLabel(run.run_type)} — ${formatDateTime(run.started_at)}`;
  document.getElementById("drawer-sub").textContent = `${run.tenants_ok} OK, ${run.tenants_error} en erreur`;
  document.getElementById("run-drawer").classList.add("open");
  document.getElementById("run-drawer").setAttribute("aria-hidden", "false");
  document.getElementById("drawer-backdrop").classList.add("open");

  if (run.tenants_error === 0) {
    document.getElementById("drawer-body").innerHTML = `<div class="empty-state">Aucune erreur sur cette exécution.</div>`;
    return;
  }

  document.getElementById("drawer-body").innerHTML = `<div class="skeleton">Chargement…</div>`;

  fetch(`/api/collection-runs/${runId}/errors`)
    .then((res) => {
      if (!res.ok) throw new Error(`HTTP ${res.status}`);
      return res.json();
    })
    .then((data) => renderDrawerContent(run, data.errors))
    .catch((e) => {
      document.getElementById("drawer-body").innerHTML =
        `<div class="banner error"><strong>Erreur de chargement</strong> : ${escapeHtml(e.message)}</div>`;
    });
}

function renderDrawerContent(run, errors) {
  const bodyEl = document.getElementById("drawer-body");

  const list = errors
    .map(
      (e) => `
      <div class="resource-row" style="flex-direction:column; align-items:flex-start; gap:4px;">
        <div class="resource-name">
          <span class="provider-badge ${e.provider}">${providerLabel(e.provider)}</span>
          ${escapeHtml(e.tenant_name)} — ${escapeHtml(e.period_start)}
        </div>
        <div class="resource-pct">${escapeHtml(e.error_message || "erreur inconnue")}</div>
      </div>`
    )
    .join("");

  const ackBlock = run.acknowledged_at
    ? `<p class="chart-card-sub" style="margin: 0 0 14px;">Acquittée le ${formatDateTime(run.acknowledged_at)}</p>`
    : `<button type="button" class="btn" id="ack-button" style="margin-bottom: 14px;">Acquitter cette erreur</button>`;

  bodyEl.innerHTML = `${ackBlock}${list}`;

  const btn = document.getElementById("ack-button");
  if (btn) {
    btn.addEventListener("click", () => acknowledgeRun(run.id));
  }
}

async function acknowledgeRun(runId) {
  const btn = document.getElementById("ack-button");
  if (btn) btn.disabled = true;

  try {
    const res = await fetch(`/api/collection-runs/${runId}/acknowledge`, { method: "POST" });
    if (!res.ok) throw new Error(`HTTP ${res.status}`);
    closeRunDrawer();
    await init();
    refreshCollecteAlert();
  } catch (e) {
    document.getElementById("drawer-body").innerHTML =
      `<div class="banner error"><strong>Erreur</strong> : ${escapeHtml(e.message)}</div>`;
  }
}

function closeRunDrawer() {
  document.getElementById("run-drawer").classList.remove("open");
  document.getElementById("run-drawer").setAttribute("aria-hidden", "true");
  document.getElementById("drawer-backdrop").classList.remove("open");
}

function setupDrawer() {
  document.getElementById("drawer-close").addEventListener("click", closeRunDrawer);
  document.getElementById("drawer-backdrop").addEventListener("click", closeRunDrawer);
  document.addEventListener("keydown", (e) => {
    if (e.key === "Escape") closeRunDrawer();
  });
}

async function init() {
  try {
    const data = await loadRuns();
    currentRuns = data.runs;
    renderRunsTable();
  } catch (e) {
    document.getElementById("error-banner").innerHTML = `
      <div class="banner error"><strong>Erreur de chargement</strong> : ${escapeHtml(e.message)}</div>`;
    document.getElementById("runs-table-wrap").innerHTML = "";
  }
}

init();
setupDrawer();