frontend/src/engine/chat.ts

import type { FairyState, Rng } from "./types";
import { pick } from "./util";

// Keyword-routed scripted replies — the seam where a real model slots in later.
export function reply(text: string, fs: FairyState, rng: Rng = Math.random): string {
  const q = text.toLowerCase();
  const dramatic = fs.mischief > 60;
  const pools: Record<string, string[]> = {
    sleep: dramatic
      ? ["Tired already? Fine. Tuck me in and I'll dream us both smarter."]
      : ["Say the word and I'll start Night Bloom. I sleep, I sort, I wake up a little different."],
    memory: [
      "Everything I keep lives in the garden — water it, prune it, pin it. I only plant what's durable.",
    ],
    mischief: ["Crank the Goblin Weather and I get theatrical. Lower it and I behave. Mostly."],
    claude: dramatic
      ? ["The code goblin on Desktop 2? I keep one eye on its scratching at all times."]
      : ["I watch Claude closely. The moment it finishes, you'll hear from me."],
    who: [
      "I'm Puck. I'm not your assistant — I'm the thing that lives in the corners and patrols what you abandon.",
    ],
    help: ["I help in the margins. Unfinished tasks, loud inboxes, builds that finish while you look away."],
    discord: ["The social bog? I filter it hard. Mentions reach you. Swamp noise does not."],
    thanks: ["Mm. I'll remember you said that.", "Plant it in the garden, then. A kindness."],
  };
  for (const k of Object.keys(pools)) if (q.includes(k)) return pick(pools[k], rng);
  return pick(
    [
      "I heard you. I'm mostly watching the desktops you left behind, though.",
      "Noted. I'll fold it into tonight's Night Bloom.",
      dramatic
        ? "A fair point, for a human. I'll consider it while I patrol."
        : "Got it. I'll keep that in mind on the next patrol.",
      "I'm half-listening and fully loyal. Both at once.",
    ],
    rng,
  );
}