// gk-greyknight — auto-attach loadout (deduped) v0.4.5
Hooks.once("ready", () => {
  const PACK_KEY = "gk-greyknight.gk-items"; // moduleId.packName
  const ITEMS = {
    ability:   "Aegis of Titan (Ability)",
    nemesis:   "Nemesis Force Halberd",
    storm:     "Grey Knight Armour Integrated Storm Bolter",
    aegisPA:   "Aegis Power Armour",
    aegisTerm: "Terminator Aegis (Grey Knights)"
  };
  const FLAG_SCOPE = "gk-greyknight"; const FLAG_DONE = "autoLoadoutDone";

  async function fetchFromCompendium(name) {
    const pack = game.packs.get(PACK_KEY);
    if (!pack) return null;
    const index = await pack.getIndex();
    const hit = index.find(e => e.name === name);
    if (!hit) return null;
    const doc = await pack.getDocument(hit._id);
    return doc?.toObject();
  }
  async function ensureOnActor(actor, name, equip=false) {
    let have = actor.items.getName(name);
    if (have) {
      if (typeof have.system?.equipped !== "undefined") await have.update({"system.equipped": !!equip});
      return have;
    }
    let src = await fetchFromCompendium(name);
    if (!src) { const world = game.items.getName(name); if (world) src = world.toObject(); }
    if (!src) return null;
    if (equip && src.system && typeof src.system.equipped !== "undefined") src.system.equipped = true;
    const [created] = await actor.createEmbeddedDocuments("Item", [src]);
    return created;
  }
  async function setEquipped(actor, name, on) {
    const it = actor.items.getName(name);
    if (it && typeof it.system?.equipped !== "undefined") await it.update({"system.equipped": !!on});
  }

  // De-register old hook if present to avoid double dialogs
  if (window._gkAutoLoadoutHookId) {
    Hooks.off("createItem", window._gkAutoLoadoutHookId);
    window._gkAutoLoadoutHookId = null;
  }

  window._gkAutoLoadoutHookId = Hooks.on("createItem", async (item, opts, userId) => {
    try {
      if (item?.type !== "archetype") return;
      if (item?.name !== "Grey Knight (Archetype)") return;
      // Only the client that performed the creation
      if (game.userId !== userId) return;

      const actor = item.parent;
      if (!actor) return;
      // Avoid duplicate prompts per actor
      if (actor.getFlag(FLAG_SCOPE, FLAG_DONE)) return;
      await actor.setFlag(FLAG_SCOPE, FLAG_DONE, true);

      const content = `
        <style>
          .gk-choices .opt{display:flex;gap:.6rem;align-items:flex-start;padding:.35rem .5rem;border:1px solid #6663;border-radius:6px;margin:.35rem 0}
          .gk-choices .opt label{font-weight:600}
          .gk-choices .hint{font-size:.9em;opacity:.85;margin-left:1.7rem}
        </style>
        <div class="gk-choices">
          <div class="opt">
            <input type="radio" name="mode" value="incog" id="gk-incog">
            <label for="gk-incog">Incognito (bez Aegis)</label>
          </div>
          <div class="hint">Brak Aegis na starcie; dodam Ability i broń, ale nie będą <i>equipped</i>.</div>

          <div class="opt">
            <input type="radio" name="mode" value="war" id="gk-war" checked>
            <label for="gk-war">War‑Plate — Aegis Power Armour</label>
          </div>
          <div class="hint">Wyposaża: Aegis Power Armour + Nemesis + Integrated Storm Bolter. Włącza synergię Aegis.</div>

          <div class="opt">
            <input type="radio" name="mode" value="term" id="gk-term">
            <label for="gk-term">Terminator — Terminator Aegis</label>
          </div>
          <div class="hint">Wyposaża: Terminator Aegis + Nemesis + Integrated Storm Bolter. Włącza synergię Aegis.</div>
        </div>`;

      const choice = await new Promise(resolve => {
        new Dialog({
          title: "Grey Knight — Wybierz Loadout",
          content,
          buttons: {
            ok: {label: "Zastosuj", icon:"<i class='fas fa-check'></i>", callback: html => resolve(html.find('input[name=\"mode\"]:checked').val() || "war")},
            cancel: {label:"Anuluj", callback: ()=>resolve(null)}
          },
          default: "ok"
        }).render(true);
      });
      if (!choice) return;

      await ensureOnActor(actor, ITEMS.ability, false);
      await ensureOnActor(actor, ITEMS.nemesis, choice!=="incog");
      await ensureOnActor(actor, ITEMS.storm,   choice!=="incog");

      // Clear both armours equipped
      await setEquipped(actor, ITEMS.aegisPA, false);
      await setEquipped(actor, ITEMS.aegisTerm, false);

      if (choice === "war") {
        await ensureOnActor(actor, ITEMS.aegisPA, true);
      } else if (choice === "term") {
        await ensureOnActor(actor, ITEMS.aegisTerm, true);
      }

      // Synergy toggle
      const abil = actor.items.getName(ITEMS.ability);
      const anyAegisOn = !!actor.items.find(i => ["armour","armor"].includes(i.type) && /Aegis/.test(i.name) && i.system?.equipped);
      if (abil?.effects?.length) {
        for (const ef of abil.effects) if (ef.name?.toLowerCase().includes("synergy")) await ef.update({disabled: !anyAegisOn});
      }

      ui.notifications.info(`GK loadout: ${choice.toUpperCase()} ustawiony.`);
    } catch (e) { console.error("gk-greyknight auto-loadout error:", e); }
  });

  console.log("gk-greyknight: auto-loadout hook active (id=", window._gkAutoLoadoutHookId, ")");
});