import {
  api,
  VERDICT_LABELS,
  formatTimestamp,
  getToken,
  setToken,
  isLoggedIn,
} from "./api.js";

const createModal = document.getElementById("createModal");
const pinModal = document.getElementById("pinModal");
const recapList = document.getElementById("recapList");
const emptyState = document.getElementById("emptyState");
const listError = document.getElementById("listError");

function escapeHtml(text) {
  const div = document.createElement("div");
  div.textContent = text;
  return div.innerHTML;
}

function renderRecapCard(item) {
  const verdict = VERDICT_LABELS[item.watch_verdict] || VERDICT_LABELS.skim;
  const href = `/r/${encodeURIComponent(item.video_id)}`;
  return `
    <a class="recapCard" href="${href}">
      <img class="recapThumb" src="${escapeHtml(item.thumbnail_url || "")}" alt="" loading="lazy">
      <div class="recapCardBody">
        <span class="verdictBadge ${verdict.className}">${verdict.emoji} ${verdict.text}</span>
        <h3>${escapeHtml(item.title)}</h3>
        <p class="recapTldr">${escapeHtml(item.tldr)}</p>
        <span class="recapMeta">${escapeHtml(item.channel || "")}</span>
      </div>
    </a>
  `;
}

async function loadRecaps() {
  listError.hidden = true;
  try {
    const data = await api.listRecaps(30);
    const items = data.items || [];
    if (!items.length) {
      recapList.innerHTML = "";
      emptyState.hidden = false;
      return;
    }
    emptyState.hidden = true;
    recapList.innerHTML = items.map(renderRecapCard).join("");
  } catch (err) {
    listError.textContent = err.message || "Liste konnte nicht geladen werden.";
    listError.hidden = false;
  }
}

function openPinModal() {
  document.getElementById("pinError").hidden = true;
  document.getElementById("pinInput").value = "";
  pinModal.showModal();
  document.getElementById("pinInput").focus();
}

function waitForPinLogin() {
  return new Promise((resolve, reject) => {
    if (isLoggedIn()) {
      resolve();
      return;
    }
    openPinModal();
    pinModal.addEventListener(
      "close",
      () => {
        if (isLoggedIn()) resolve();
        else reject(new Error("Abgebrochen"));
      },
      { once: true }
    );
  });
}

function openCreateModal() {
  document.getElementById("createError").hidden = true;
  document.getElementById("createProgress").hidden = true;
  document.getElementById("urlInput").value = "";
  document.getElementById("forceCheckbox").checked = false;
  document.getElementById("createSubmit").disabled = false;
  createModal.showModal();
  document.getElementById("urlInput").focus();
}

async function handleCreate(e) {
  e.preventDefault();
  const url = document.getElementById("urlInput").value.trim();
  const force = document.getElementById("forceCheckbox").checked;
  const errEl = document.getElementById("createError");
  const progress = document.getElementById("createProgress");
  const submit = document.getElementById("createSubmit");

  errEl.hidden = true;
  progress.hidden = false;
  submit.disabled = true;

  try {
    const result = await api.createRecap(url, force);
    createModal.close();
    window.location.href = `/r/${encodeURIComponent(result.recap.video_id)}`;
  } catch (err) {
    errEl.textContent = err.message || "Recap fehlgeschlagen.";
    errEl.hidden = false;
    progress.hidden = true;
    submit.disabled = false;
  }
}

function wirePinForm() {
  document.getElementById("pinCancel").addEventListener("click", () => pinModal.close());
  document.getElementById("pinForm").addEventListener("submit", async (e) => {
    e.preventDefault();
    const pin = document.getElementById("pinInput").value.trim();
    const errEl = document.getElementById("pinError");
    errEl.hidden = true;
    try {
      const { token } = await api.login(pin);
      setToken(token);
      pinModal.close();
    } catch {
      errEl.textContent = "Falscher PIN. Dein Goldfisch auch.";
      errEl.hidden = false;
    }
  });
}

function wireCreate() {
  document.getElementById("newRecapBtn").addEventListener("click", async () => {
    try {
      await waitForPinLogin();
      openCreateModal();
    } catch {
      /* cancelled */
    }
  });
  document.getElementById("createCancel").addEventListener("click", () => createModal.close());
  document.getElementById("createForm").addEventListener("submit", async (e) => {
    e.preventDefault();
    if (!isLoggedIn()) {
      try {
        await waitForPinLogin();
      } catch {
        return;
      }
    }
    await handleCreate(e);
  });
}

function registerSw() {
  if ("serviceWorker" in navigator) {
    navigator.serviceWorker.register("/sw.js").catch(() => {});
  }
}

wirePinForm();
wireCreate();
loadRecaps();
registerSw();