All files / features/pairing usePairing.ts

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import { create } from "zustand";
 
/**
 * Local pairing state (skeleton). In production this is derived from the
 * `couples` document in Firestore — `members: [uidA, uidB]`, no gendered roles
 * (decision record §4). Pairing is server-authoritative via a Cloud Function.
 */
type PairingState = {
  isPaired: boolean;
  partnerName: string | null;
  togetherDays: number;
  inviteCode: string;
  pair: (partnerName: string) => void;
  reset: () => void;
};
 
function makeInviteCode(): string {
  // Deterministic-enough placeholder; the real code is minted server-side.
  return "GLM-2026";
}
 
export const usePairing = create<PairingState>((set) => ({
  isPaired: false,
  partnerName: null,
  togetherDays: 0,
  inviteCode: makeInviteCode(),
  pair: (partnerName) => set({ isPaired: true, partnerName, togetherDays: 1 }),
  reset: () => set({ isPaired: false, partnerName: null, togetherDays: 0 }),
}));