// Copyright: (c) 2026 TWWIM UG. All rights reserved. (www.twwim.com)

import { AuthOrigin, Channel } from '@archer/domain';

/**
 * Resolves which storefront/surface the dashboard is rendering for. Single
 * source of truth for UI shape across CP web, WP plugin embed, and Shopify
 * deep-linked sessions. Reuses the @archer/domain Channel enum so backend and
 * client speak the same vocabulary.
 *
 * Resolution priority (intentional):
 *   1. WP build flag wins — the plugin ships its own bundle, every session
 *      inside wp-admin is WORDPRESS regardless of who's signed in.
 *   2. SHOPIFY auth origin — applies only inside the cp.twwim.ai web bundle
 *      when a Shopify-installed merchant deep-links in via /auth/shopify.
 *   3. WEBSITE — the default; pure web TWWIM users.
 *
 * Channel.JTL is reserved for the future native JTL Shop plugin build target.
 */
export interface ResolveChannelInput {
  /** import.meta.env.VITE_WP_EMBED === 'true' — baked at WP plugin build. */
  isWpEmbedBuild: boolean;
  /** AuthenticatedUser.authOrigin from the JWT (undefined before login). */
  authOrigin: AuthOrigin | undefined;
}

export function resolveChannel(input: ResolveChannelInput): Channel {
  if (input.isWpEmbedBuild) return Channel.WORDPRESS;
  if (input.authOrigin === AuthOrigin.SHOPIFY) return Channel.SHOPIFY;
  return Channel.WEBSITE;
}