const form = document.getElementById("upload-form");
const titleInput = document.getElementById("title");
const audioInput = document.getElementById("audio");
const submitBtn = document.getElementById("submit-btn");
const uploadProgress = document.getElementById("upload-progress");
const uploadBar = uploadProgress.querySelector(".bar-fill");
const uploadMsg = document.getElementById("upload-msg");
const jobsBody = document.getElementById("jobs-body");
const macStatus = document.getElementById("mac-status");

async function checkMac() {
  try {
    const r = await fetch("/api/mac/health");
    const j = await r.json();
    if (r.ok && j.reachable) {
      macStatus.textContent = "Mac-Backend: online";
      macStatus.classList.add("ok");
      macStatus.classList.remove("err");
    } else {
      macStatus.textContent = "Mac-Backend: nicht erreichbar";
      macStatus.classList.add("err");
      macStatus.classList.remove("ok");
    }
  } catch {
    macStatus.textContent = "Mac-Backend: Fehler";
    macStatus.classList.add("err");
  }
}

function fmtDate(s) {
  const d = new Date(s);
  return d.toLocaleString("de-DE", { dateStyle: "short", timeStyle: "medium" });
}

const DOWNLOADS = [
  { kind: "docx",       label: "DOCX",       title: "Sitzungsprotokoll als Word-Dokument" },
  { kind: "protocol",   label: "Protokoll",  title: "Strukturiertes Protokoll (JSON)" },
  { kind: "summary",    label: "Summary",    title: "Zusammenfassung (JSON)" },
  { kind: "transcript", label: "Transkript", title: "Rohes Transkript (JSON)" },
];

function escapeHtml(s) {
  return String(s ?? "").replace(/[&<>"']/g, (c) => ({
    "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;",
  }[c]));
}

function row(job) {
  const tr = document.createElement("tr");
  const title = job.title || job.original_name;

  const dlCell = document.createElement("td");
  dlCell.className = "dl";
  DOWNLOADS.forEach(({ kind, label, title: tip }) => {
    const a = document.createElement("a");
    a.className = "btn-dl";
    a.textContent = label;
    a.title = tip;
    a.href = `/api/jobs/${job.id}/download/${kind}`;
    if (!job.has[kind]) {
      a.classList.add("disabled");
      a.removeAttribute("href");
      a.title = `${tip} — noch nicht verfügbar`;
    }
    dlCell.appendChild(a);
  });

  const statusCell = `
    <span class="status-pill status-${job.status}">${escapeHtml(job.status)}</span>
    ${job.error ? `<div class="status-error" title="${escapeHtml(job.error)}">${escapeHtml(job.error)}</div>` : ""}
  `;

  tr.innerHTML = `
    <td class="col-id">#${job.id}</td>
    <td class="col-title">${escapeHtml(title)}<br><small class="muted">${escapeHtml(job.original_name)}</small></td>
    <td class="col-status">${statusCell}</td>
    <td class="col-progress"><div class="bar"><div class="bar-fill" style="width:${job.progress}%"></div></div><small class="muted">${job.progress}%</small></td>
    <td class="col-updated"><small class="muted">${fmtDate(job.updated_at)}</small></td>
  `;
  tr.appendChild(dlCell);
  return tr;
}

async function loadJobs() {
  try {
    const r = await fetch("/api/jobs");
    const jobs = await r.json();
    jobsBody.innerHTML = "";
    if (!jobs.length) {
      jobsBody.innerHTML = '<tr><td colspan="6" class="muted">Noch keine Jobs.</td></tr>';
      return;
    }
    jobs.forEach((j) => jobsBody.appendChild(row(j)));
  } catch (e) {
    console.error(e);
  }
}

form.addEventListener("submit", (ev) => {
  ev.preventDefault();
  if (!audioInput.files.length) return;
  const fd = new FormData();
  fd.append("audio", audioInput.files[0]);
  fd.append("title", titleInput.value);

  submitBtn.disabled = true;
  uploadProgress.classList.remove("hidden");
  uploadBar.style.width = "0%";
  uploadMsg.textContent = "";
  uploadMsg.className = "msg";

  const xhr = new XMLHttpRequest();
  xhr.open("POST", "/api/jobs");
  xhr.upload.onprogress = (e) => {
    if (e.lengthComputable) {
      const p = Math.round((e.loaded / e.total) * 100);
      uploadBar.style.width = p + "%";
    }
  };
  xhr.onload = () => {
    submitBtn.disabled = false;
    uploadProgress.classList.add("hidden");
    if (xhr.status >= 200 && xhr.status < 300) {
      const j = JSON.parse(xhr.responseText);
      uploadMsg.textContent = `Job #${j.id} erstellt. Verarbeitung läuft …`;
      uploadMsg.className = "msg ok";
      form.reset();
      loadJobs();
    } else {
      let err = "Upload fehlgeschlagen";
      try { err = JSON.parse(xhr.responseText).detail || err; } catch {}
      uploadMsg.textContent = err;
      uploadMsg.className = "msg err";
    }
  };
  xhr.onerror = () => {
    submitBtn.disabled = false;
    uploadProgress.classList.add("hidden");
    uploadMsg.textContent = "Netzwerkfehler beim Upload";
    uploadMsg.className = "msg err";
  };
  xhr.send(fd);
});

checkMac();
loadJobs();
setInterval(loadJobs, 3000);
setInterval(checkMac, 15000);