// gk-greyknight — auto-attach loadout (scoped + incognito + ORDO) v0.5.3
Hooks.once("ready", () => {
  const PACK_KEY = "gk-greyknight.gk-items"; // v11-style pack id
  const PACK_SRC_PREFIX = `Compendium.${PACK_KEY}.`;
  const CORE = {
    knife:  "Compendium.wng-core.items.Item.4QVBQYWXXLyvFWkj",
    pistol: "Compendium.wng-core.items.Item.7b2xcPWBB7up65PM",
    ordo:   "Compendium.wng-core.items.Item.mpcvHYlffwcBy9gP"
  };
  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)",
    pilgrim:   "Pilgrim Astartes Power Armor",
    ordo:      "ORDO MALLEUS"
  };
  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 fetchFromUuid(uuid) { try { const doc = await fromUuid(uuid); return doc?.toObject(); } catch(e){ return null; } }
  async function ensureOnActor(actor, srcDoc, equip=false) {
    const name = srcDoc?.name; if (!name) return null;
    let have = actor.items.getName(name);
    if (have) { if (typeof have.system?.equipped !== "undefined") await have.update({"system.equipped": !!equip}); return have; }
    if (equip && srcDoc.system && typeof srcDoc.system.equipped !== "undefined") srcDoc.system.equipped = true;
    const [created] = await actor.createEmbeddedDocuments("Item", [srcDoc]);
    return created;
  }
  async function ensureByName(actor, name, equip=false) {
    const 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;
    return ensureOnActor(actor, src, equip);
  }
  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});
  }

  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;
      const src = item?.flags?.core?.sourceId || "";
      const isFromOurPack = src.startsWith(PACK_SRC_PREFIX);
      const isOurGKByName = item?.name === "Grey Knight (Archetype)";
      if (!isFromOurPack && !isOurGKByName) return;
      if (game.userId !== userId) return;
      const actor = item.parent; if (!actor) return;
      if (actor.getFlag(FLAG_SCOPE, FLAG_DONE)) return;
      await actor.setFlag(FLAG_SCOPE, FLAG_DONE, true);

      await ensureByName(actor, ITEMS.ability, false);
      let ordoDoc = await fetchFromUuid(CORE.ordo);
      if (!ordoDoc) ordoDoc = await fetchFromCompendium(ITEMS.ordo);
      if (ordoDoc) await ensureOnActor(actor, ordoDoc, false);

      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 — Pilgrim Astartes Power Armor + Combat Knife + Bolt Pistol</label>
          </div>
          <div class="hint">Low‑profile loadout (bez Nemesis/SB)</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">Aegis PA + Nemesis + Integrated Storm Bolter</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">Terminator Aegis + Nemesis + Integrated Storm Bolter</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 setEquipped(actor, ITEMS.aegisPA, false);
      await setEquipped(actor, ITEMS.aegisTerm, false);
      await setEquipped(actor, ITEMS.nemesis, false);
      await setEquipped(actor, ITEMS.storm, false);
      await setEquipped(actor, ITEMS.pilgrim, false);

      if (choice === "incog") {
        await ensureByName(actor, ITEMS.pilgrim, true);
        const knife = await fetchFromUuid(CORE.knife); if (knife) await ensureOnActor(actor, knife, true);
        const pistol = await fetchFromUuid(CORE.pistol); if (pistol) await ensureOnActor(actor, pistol, true);
      } else if (choice === "war") {
        await ensureByName(actor, ITEMS.nemesis, true);
        await ensureByName(actor, ITEMS.storm,   true);
        await ensureByName(actor, ITEMS.aegisPA, true);
      } else if (choice === "term") {
        await ensureByName(actor, ITEMS.nemesis, true);
        await ensureByName(actor, ITEMS.storm,   true);
        await ensureByName(actor, ITEMS.aegisTerm, true);
      }

      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 (v0.5.3, pack=gk-items)");
});