import type { AccountBinding, MarketplaceLibrarySnapshot } from './account-plugin-cache';
import { MarketplaceClientError, type MarketplaceClient } from './marketplace-client';
import { CHILD_FRIENDLY_REPLIES_PLUGIN_ID, CHILD_FRIENDLY_REPLIES_BUNDLED_RELEASE_ID } from '../../shared/coding-plugins';
import { isMakeLoreVersionCompatible } from './release-descriptor';

export const DEFAULT_CHILD_REPLIES_PLUGIN_ID = CHILD_FRIENDLY_REPLIES_PLUGIN_ID;

/** This code-owned Skill ships with the client; only its account acquisition is remote. */
export async function installDefaultChildReplies(options: {
  marketplace: MarketplaceClient;
  clientVersion: string;
  binding: AccountBinding | null;
  library: MarketplaceLibrarySnapshot;
  onInstalled(): Promise<void>;
}): Promise<MarketplaceLibrarySnapshot> {
  let library = options.library;
  const binding = options.binding;
  if (!binding || library.stale) return library;
  const assertAccount = () => {
    const current = options.marketplace.getCurrentAccountBinding();
    if (current?.accountKey !== binding.accountKey || current?.epoch !== binding.epoch) {
      throw new MarketplaceClientError('marketplace_account_changed', 409, 'Marketplace account changed');
    }
  };
  const pluginId = DEFAULT_CHILD_REPLIES_PLUGIN_ID;
  const entry = library.items.find((item) => item.pluginId === pluginId);
  if (entry) return library; // Includes the account's durable removal receipt.
  try {
    assertAccount();
    const detail = await options.marketplace.readDetail(pluginId);
    assertAccount();
    const release = detail.stableRelease;
    if (detail.stale || detail.runtimeStatus !== 'enabled' || detail.acquisition !== 'free'
      || release?.deliveryKind !== 'bundled' || release.releaseId !== CHILD_FRIENDLY_REPLIES_BUNDLED_RELEASE_ID
      || !isMakeLoreVersionCompatible(options.clientVersion, release.minMakeloreVersion, release.maxMakeloreVersion)) return library;
    library = await options.marketplace.acquire(pluginId);
    assertAccount();
    await options.onInstalled();
  } catch (error) {
    assertAccount();
    if (error instanceof MarketplaceClientError && error.code === 'marketplace_account_changed') throw error;
    // An unavailable default must not hide the rest of the Library. A later
    // session/list refresh retries; no local success or removal receipt is invented.
  }
  return library;
}