/* ============================================================
   public/js/buildings/daily.js
   Tagesherausforderung – Karten-Pfad mit 7 Stationen gegen KI
============================================================ */

/* ── Stationen: Position auf dem Bild (% left, % top) ───── */
const DAILY_STATIONS = [
  { id: 1, left: 49.5, top: 86.5, label: "1" },
  { id: 2, left: 37.0, top: 73.0, label: "2" },
  { id: 3, left: 44.5, top: 62.0, label: "3" },
  { id: 4, left: 54.5, top: 53.5, label: "4" },
  { id: 5, left: 49.0, top: 46.0, label: "5" },
  { id: 6, left: 44.5, top: 37.5, label: "6" },
  { id: 7, left: 50.0, top: 22.0, label: "7" },
];

let dailyDeckId   = null;
let dailyOverlay  = null;

/* ── Öffnet den Karten-Pfad ──────────────────────────────── */
export async function openDailyMap(deckId) {
  dailyDeckId = deckId;

  // Kein Duplikat
  document.getElementById("daily-map-overlay")?.remove();

  /* Fortschritt vom Server laden */
  let completed = [];
  try {
    const res = await fetch("/api/himmelstor/daily/progress");
    if (res.ok) {
      const data = await res.json();
      completed = data.completed ?? [];
    }
  } catch (e) { console.error("[Daily] Fortschritt laden:", e); }

  /* Overlay aufbauen */
  dailyOverlay = document.createElement("div");
  dailyOverlay.id = "daily-map-overlay";
  dailyOverlay.innerHTML = `
    <div id="daily-map-wrap">
      <img id="daily-map-img" src="/images/KI_arena/daily.jpeg"
           onerror="this.src='/images/items/rueckseite.png'" alt="Daily" />
      <div id="daily-map-title">☀️ TAGESHERAUSFORDERUNG</div>
      <button id="daily-map-close" title="Schließen">✕</button>
      ${buildCircles(completed)}
      <div id="daily-progress-bar-wrap">
        <div id="daily-progress-text">${completed.length} / 7 Stationen abgeschlossen</div>
        <div id="daily-progress-track">
          <div id="daily-progress-fill" style="width:${Math.round((completed.length / 7) * 100)}%"></div>
        </div>
      </div>
      ${completed.length >= 7 ? buildAllDonePanel() : ""}
    </div>`;

  document.body.appendChild(dailyOverlay);

  /* Event-Listener */
  document.getElementById("daily-map-close").addEventListener("click", closeDailyMap);
  dailyOverlay.addEventListener("click", e => { if (e.target === dailyOverlay) closeDailyMap(); });

  /* Klickbare Kreise */
  dailyOverlay.querySelectorAll(".daily-circle.available").forEach(circle => {
    circle.addEventListener("click", () => {
      const station = parseInt(circle.dataset.station, 10);
      startDailyStation(station);
    });
  });
}

/* ── HTML der Kreise ─────────────────────────────────────── */
function buildCircles(completed) {
  const maxDone = completed.length; // nächster freier = maxDone + 1

  return DAILY_STATIONS.map(s => {
    const isDone      = completed.includes(s.id);
    const isAvailable = !isDone && s.id === maxDone + 1;
    const isLocked    = !isDone && !isAvailable;

    const cls = isDone ? "done" : isAvailable ? "available" : "locked";
    const inner = isDone ? "" : s.label; // done zeigt ✓ per CSS ::after

    return `<div
      class="daily-circle ${cls}"
      data-station="${s.id}"
      style="left:${s.left}%;top:${s.top}%;"
      title="${isDone ? "Abgeschlossen" : isAvailable ? `Station ${s.id} starten` : "Gesperrt"}"
    >${inner}</div>`;
  }).join("");
}

function buildAllDonePanel() {
  return `
    <div id="daily-all-done">
      <div class="done-icon">🏆</div>
      <div class="done-title">TAGESQUEST ABGESCHLOSSEN!</div>
      <div class="done-sub">Du hast alle 7 Stationen gemeistert.</div>
      <button class="done-btn" onclick="document.getElementById('daily-map-overlay')?.remove()">
        ✔ SCHLIESSEN
      </button>
    </div>`;
}

/* ── Station starten ─────────────────────────────────────── */
function startDailyStation(station) {
  if (!dailyDeckId) {
    alert("Bitte zuerst ein Deck auswählen.");
    return;
  }

  const socket = window._socket;
  if (!socket) {
    console.error("[Daily] Kein Socket.");
    return;
  }

  /* Kreis als "lädt" markieren */
  const circle = dailyOverlay.querySelector(`.daily-circle[data-station="${station}"]`);
  if (circle) {
    circle.style.animation = "none";
    circle.style.opacity   = "0.5";
    circle.style.cursor    = "wait";
  }

  /* Einmaligen Listener für Match-Gefunden */
  socket.once("ht_daily_match_found", data => {
    closeDailyMap();
    openHtDailyPopup(
      `/himmelstor/daily?match=${encodeURIComponent(data.matchId)}&slot=${encodeURIComponent(data.mySlot)}&deck=${encodeURIComponent(dailyDeckId)}&station=${station}&opponent=${encodeURIComponent("Wächter " + station)}`,
      "Wächter " + station,
      data.matchId
    );
  });

  socket.once("ht_daily_error", data => {
    if (circle) { circle.style.animation = ""; circle.style.opacity = ""; circle.style.cursor = ""; }
    alert(data.message || "Fehler beim Starten.");
  });

  socket.emit("ht_join_daily", {
    station,
    deckId: dailyDeckId,
  });
}

/* ── Popup öffnen (Iframe wie bei Arena) ─────────────────── */
function openHtDailyPopup(src, opponentName, matchId) {
  document.getElementById("ht-daily-backdrop")?.remove();
  document.getElementById("ht-daily-popup")?.remove();

  const backdrop = document.createElement("div");
  backdrop.id = "ht-daily-backdrop";
  backdrop.style.cssText = "position:fixed;inset:0;background:rgba(0,0,0,.82);backdrop-filter:blur(5px);z-index:9998;";

  const popup = document.createElement("div");
  popup.id = "ht-daily-popup";
  popup.style.cssText = "position:fixed;inset:50px;z-index:9999;display:flex;flex-direction:column;border-radius:14px;overflow:hidden;box-shadow:0 0 0 1px rgba(80,140,255,.4),0 30px 90px rgba(0,0,0,.85);";
  popup.innerHTML = `
    <div style="display:flex;align-items:center;justify-content:space-between;background:rgba(5,8,20,.95);border-bottom:1px solid rgba(80,140,255,.3);padding:0 16px;height:42px;flex-shrink:0;">
      <span style="font-family:'Cinzel',serif;font-size:13px;letter-spacing:4px;color:rgba(160,200,255,.85);text-transform:uppercase;">☀️ Daily · vs ${opponentName}</span>
      <span style="font-size:11px;color:rgba(255,255,255,.22);">${matchId}</span>
    </div>
    <iframe src="${src}" allowfullscreen style="flex:1;border:none;width:100%;display:block;"></iframe>`;

  document.body.appendChild(backdrop);
  document.body.appendChild(popup);

  /* Cleanup wenn Iframe-Spiel beendet → closeToArena ruft parent auf */
}

/* ── Overlay schließen ───────────────────────────────────── */
function closeDailyMap() {
  document.getElementById("daily-map-overlay")?.remove();
  dailyOverlay = null;
}

/* ── Extern: nach gewonnenem Match Kreis aktualisieren ───── */
export function markDailyStationDone(station) {
  if (!dailyOverlay) return;
  const circle = dailyOverlay.querySelector(`.daily-circle[data-station="${station}"]`);
  if (!circle) return;
  circle.className = "daily-circle done";
  circle.textContent = "";
  circle.style = "";

  /* Nächste Station freischalten */
  const next = dailyOverlay.querySelector(`.daily-circle[data-station="${station + 1}"]`);
  if (next) {
    next.className = "daily-circle available";
    next.textContent = String(station + 1);
    next.addEventListener("click", () => startDailyStation(station + 1));
  }

  /* Fortschrittsbalken updaten */
  const done = dailyOverlay.querySelectorAll(".daily-circle.done").length;
  const pct  = Math.round((done / 7) * 100);
  const fill = document.getElementById("daily-progress-fill");
  const text = document.getElementById("daily-progress-text");
  if (fill) fill.style.width = pct + "%";
  if (text) text.textContent = `${done} / 7 Stationen abgeschlossen`;

  /* Alle 7 fertig? */
  if (done >= 7) {
    const wrap = document.getElementById("daily-map-wrap");
    if (wrap && !document.getElementById("daily-all-done")) {
      const panel = document.createElement("div");
      panel.innerHTML = buildAllDonePanel();
      wrap.appendChild(panel.firstElementChild);
    }
  }
}