(function(){
  const host = document.getElementById("toastHost");

  function iconFor(type){
    if(type === "success") return "✅";
    if(type === "error") return "⛔";
    if(type === "info") return "🛰️";
    return "🔔";
  }

  window.toast = function(type="info", title="Notice", message="", ttl=3200){
    if(!host) return;

    const el = document.createElement("div");
    el.className = `toast toast-${type}`;
    el.innerHTML = `
      <div class="toast-icon">${iconFor(type)}</div>
      <div class="toast-body">
        <div class="toast-title">${escapeHtml(title)}</div>
        <div class="toast-msg">${escapeHtml(message)}</div>
      </div>
      <button class="toast-x" aria-label="Close">✕</button>
    `;

    const remove = () => {
      el.classList.add("out");
      el.addEventListener("animationend", () => el.remove(), { once:true });
    };

    el.querySelector(".toast-x").addEventListener("click", remove);
    host.appendChild(el);
    if (ttl > 0) setTimeout(remove, ttl);
  };

  function escapeHtml(s){
    return String(s ?? "")
      .replaceAll("&","&amp;")
      .replaceAll("<","&lt;")
      .replaceAll(">","&gt;")
      .replaceAll('"',"&quot;")
      .replaceAll("'","&#039;");
  }

  // Notifications dropdown (tiny JS)
  const notif = document.getElementById("notifPanel");
  window.toggleNotif = function(){
    if(!notif) return;
    const isHidden = notif.hasAttribute("hidden");
    if(isHidden) notif.removeAttribute("hidden");
    else notif.setAttribute("hidden","");
  };
  document.addEventListener("click", (e)=>{
    if(!notif) return;
    const btn = e.target.closest(".iconbtn");
    const inside = e.target.closest("#notifPanel");
    if(inside || btn) return;
    notif.setAttribute("hidden","");
  });

  // Settings helpers: perf + alertpulse (no cookies)
  function setStorage(key, val, remember){
    try{
      if (remember) {
        localStorage.setItem(key, val);
        sessionStorage.removeItem(key);
      } else {
        sessionStorage.setItem(key, val);
        localStorage.removeItem(key);
      }
    }catch(e){}
  }
  function applyDataset(key, val){
    document.documentElement.dataset[key] = val;
    if (key === "perf") {
      const label = document.getElementById("perfLabel");
      if(label) label.textContent = val.toUpperCase();
    }
  }

  window.applyPerfFromUI = function(){
    const chosen = document.querySelector(".seg-btn.is-selected[data-perf]")?.dataset.perf;
    const remember = document.getElementById("rememberPerf")?.checked;
    const val = chosen || "auto";
    setStorage("perf", val, remember);
    applyDataset("perf", val);
    toast("success","Performance", `Profil: ${val.toUpperCase()}`, 2200);
    if (val === "low") toast("info","Hint","Low deaktiviert Starfield", 1800);
  };

  window.applyPulseFromUI = function(){
    const chosen = document.querySelector(".seg-btn.is-selected[data-alertpulse]")?.dataset.alertpulse;
    const remember = document.getElementById("rememberPulse")?.checked;
    const val = chosen || "burst";
    setStorage("alertpulse", val, remember);
    applyDataset("alertpulse", val);
    toast("success","Alerts", `Pulse: ${val.toUpperCase()}`, 2200);
  };

  // Segment button selection behavior
  document.addEventListener("click", (e)=>{
    const b = e.target.closest(".seg-btn");
    if(!b) return;
    const parent = b.closest(".seg");
    if(parent){
      parent.querySelectorAll(".seg-btn").forEach(x=>x.classList.remove("is-selected"));
      b.classList.add("is-selected");
    }
  });

  // Pre-select in settings pages
  document.addEventListener("DOMContentLoaded", ()=>{
    const perf = document.documentElement.dataset.perf || "auto";
    document.querySelectorAll('.seg-btn[data-perf]').forEach(b=>{
      if(b.dataset.perf === perf) b.classList.add("is-selected");
    });
    const pulse = document.documentElement.dataset.alertpulse || "burst";
    document.querySelectorAll('.seg-btn[data-alertpulse]').forEach(b=>{
      if(b.dataset.alertpulse === pulse) b.classList.add("is-selected");
    });
  });

  function formatNumber(val){
    const num = Number.isFinite(val) ? val : 0;
    return Math.round(num).toLocaleString("de-DE");
  }

  const resourceMap = {
    "Metall": "metal",
    "Kristall": "crystals",
    "Deuterium": "deuterium",
    "Energie": "energy"
  };

  function updateResourceBar(state){
    const stats = document.querySelectorAll(".resource-row .stat");
    stats.forEach((stat)=>{
      const label = stat.querySelector(".stat-k")?.textContent?.trim();
      const key = resourceMap[label];
      if(!key) return;
      const value = state?.resources?.[key];
      if(typeof value !== "number") return;
      const valueEl = stat.querySelector(".stat-v");
      if(!valueEl) return;
      const dot = valueEl.querySelector(".dot");
      const display = key === "energy" ? Math.round(value) : Math.floor(value);
      const prefix = key === "energy" && display >= 0 ? "+" : "";
      valueEl.textContent = "";
      if(dot) valueEl.appendChild(dot);
      valueEl.appendChild(document.createTextNode(` ${prefix}${formatNumber(display)}`));
    });
  }

  async function fetchState(){
    try{
      const res = await fetch("/api/state");
      if(!res.ok) return null;
      return await res.json();
    }catch(e){
      return null;
    }
  }

  async function refreshState(){
    const state = await fetchState();
    if(state) updateResourceBar(state);
  }

  function ensureBuildButton(){
    const content = document.getElementById("content");
    if(!content || document.getElementById("buildOreMine")) return;
    const wrap = document.createElement("div");
    wrap.className = "actions";
    const btn = document.createElement("button");
    btn.className = "btn btn-primary";
    btn.id = "buildOreMine";
    btn.type = "button";
    btn.textContent = "Erzmine bauen";
    btn.addEventListener("click", async ()=>{
      try{
        const res = await fetch("/api/build/start", {
          method: "POST",
          headers: {"Content-Type":"application/json"},
          body: JSON.stringify({building_key:"ore_mine", amount:1})
        });
        const data = await res.json();
        if(res.ok){
          toast("success","Bau gestartet","Erzmine in Queue gelegt");
          updateResourceBar({resources: data.resources});
        }else{
          toast("error","Bau fehlgeschlagen", data.message || "Aktion nicht möglich");
        }
      }catch(e){
        toast("error","Netzwerk","API nicht erreichbar");
      }
    });
    wrap.appendChild(btn);
    content.appendChild(wrap);
  }

  document.addEventListener("DOMContentLoaded", ()=>{
    refreshState();
    ensureBuildButton();
    setInterval(refreshState, 30000);
  });
})();