import { pickVideoCardTags } from "@/components/common/card-tags";
import { sorts, type ShortDramaItem, type Sort } from "@/components/short-drama/data";
import { formatHeat } from "@/components/ranking/data";
import type { VideoCategoryListItem, VideoListItem, VideoListResp } from "@/lib/api/types";

export const VIDEO_PAGE_SIZE = 30;

export const videoSorts = sorts;
export type VideoSort = Sort;

export function videoSortType(sort: VideoSort): 1 | 2 {
  return sort === "latest" ? 2 : 1;
}

export function mapVideoListItem(item: VideoListItem): ShortDramaItem | null {
  // 信息流广告（type=2）不展示：网页只保留后台 5 个站点广告位
  if (item.type === 2) return null;

  if (!item.id) return null;
  const slug = (item.slug || "").trim();
  return {
    kind: "drama",
    id: String(item.id),
    slug: slug || undefined,
    title: (item.title || "").trim() || "未命名",
    subtitle: "",
    tags: pickVideoCardTags(item),
    heat: formatHeat(item.watchNum),
    episodes: "",
    cover: (item.coverImg || "").trim(),
    date: item.addedTime || undefined,
  };
}

export type VideoListResult = {
  items: ShortDramaItem[];
  page: number;
  pageSize: number;
  totalCount: number;
  totalPages: number;
  sort: VideoSort;
  categories: VideoCategoryListItem[];
  categorySlug?: string;
};

export function buildVideoList(
  data: VideoListResp | null | undefined,
  sort: VideoSort,
  fallbackPage = 1,
  fallbackPageSize = VIDEO_PAGE_SIZE,
  options?: { categories?: VideoCategoryListItem[]; categorySlug?: string },
): VideoListResult {
  const page = data?.pageNum || fallbackPage;
  const pageSize = data?.pageSize || fallbackPageSize;
  const totalCount = data?.totalCount || 0;
  const items = (data?.list ?? [])
    .map(mapVideoListItem)
    .filter((item): item is ShortDramaItem => Boolean(item));

  return {
    items,
    page,
    pageSize,
    totalCount,
    totalPages: Math.max(1, Math.ceil(totalCount / pageSize) || 1),
    sort,
    categories: options?.categories ?? [],
    categorySlug: options?.categorySlug,
  };
}