import type {
  BarkBattleDraftConfig,
  BarkBattleGenerationStatus as SharedBarkBattleGenerationStatus,
  BarkBattleWorkSummary,
} from '../../../packages/shared/src/contracts/barkBattle';

export type BarkBattleGenerationStatus = SharedBarkBattleGenerationStatus;

export function mergeBarkBattleWorkSummary(
  current: BarkBattleWorkSummary,
  updated: BarkBattleWorkSummary,
): BarkBattleWorkSummary {
  if (current.workId !== updated.workId) {
    return current;
  }

  if (current.status === 'published' && updated.status !== 'published') {
    return {
      ...updated,
      ...current,
      playCount: current.playCount ?? updated.playCount,
      recentPlayCount7d: current.recentPlayCount7d ?? updated.recentPlayCount7d,
      updatedAt: current.updatedAt || updated.updatedAt,
      publishedAt: current.publishedAt ?? updated.publishedAt,
    };
  }

  return { ...current, ...updated };
}

export function hasBarkBattleSummaryRequiredImages(item: BarkBattleWorkSummary) {
  return Boolean(
    item.playerCharacterImageSrc?.trim() &&
      item.opponentCharacterImageSrc?.trim() &&
      item.uiBackgroundImageSrc?.trim(),
  );
}

export function shouldPreserveLocalBarkBattleWorkOnRefresh(
  item: BarkBattleWorkSummary,
  refreshed: readonly BarkBattleWorkSummary[],
) {
  if (item.status === 'published') {
    return !refreshed.some(
      (entry) => entry.workId === item.workId && entry.status === 'published',
    );
  }
  if (refreshed.some((entry) => entry.workId === item.workId)) {
    return false;
  }

  // 中文注释：Bark Battle 创建/生成完成/保存后会先把本地摘要塞进作品架，
  // 后端 /works 读模型可能短暂落后；只要刷新结果还没有同 workId，就保留本地草稿，
  // 避免 ready 且三图齐全的草稿在刷新窗口期从“我的草稿”里消失。
  return true;
}

export function buildBarkBattleWorkSummaryFromDraft(
  draft: BarkBattleDraftConfig,
  user:
    | {
        id: string;
        displayName: string;
        publicUserCode: string;
      }
    | null
    | undefined,
  generationStatus: BarkBattleGenerationStatus = 'pending_assets',
): BarkBattleWorkSummary {
  const workId = draft.workId?.trim() || draft.draftId;
  return {
    workId,
    draftId: draft.draftId,
    ownerUserId: user?.id ?? '',
    authorDisplayName: user?.displayName ?? '创作者',
    title: draft.title,
    summary: draft.description ?? '',
    themeDescription: draft.themeDescription,
    playerImageDescription: draft.playerImageDescription,
    opponentImageDescription: draft.opponentImageDescription,
    onomatopoeia: draft.onomatopoeia,
    playerCharacterImageSrc: draft.playerCharacterImageSrc ?? null,
    opponentCharacterImageSrc: draft.opponentCharacterImageSrc ?? null,
    uiBackgroundImageSrc: draft.uiBackgroundImageSrc ?? null,
    difficultyPreset: draft.difficultyPreset,
    status: 'draft',
    generationStatus,
    publishReady: Boolean(
      draft.playerCharacterImageSrc?.trim() &&
        draft.opponentCharacterImageSrc?.trim() &&
        draft.uiBackgroundImageSrc?.trim(),
    ),
    playCount: 0,
    updatedAt: draft.updatedAt,
    publishedAt: null,
  };
}

export function mergeBarkBattleWorksByWorkId(
  items: readonly BarkBattleWorkSummary[],
): BarkBattleWorkSummary[] {
  const byWorkId = new Map<string, BarkBattleWorkSummary>();
  for (const item of items) {
    const current = byWorkId.get(item.workId);
    if (!current) {
      byWorkId.set(item.workId, item);
      continue;
    }
    if (current.status !== 'published' && item.status === 'published') {
      byWorkId.set(item.workId, { ...current, ...item });
      continue;
    }
    if (current.status === item.status || current.status === 'published') {
      byWorkId.set(item.workId, mergeBarkBattleWorkSummary(current, item));
    }
  }
  return Array.from(byWorkId.values());
}