import {
  db,
  Post,
  PostState,
  PostType,
  UserProfile,
  VisitType,
} from '@nice/common';

export async function setPostRelation(params: {
  data: Post;
  staff?: UserProfile;
}) {
  const { data, staff } = params;
  // 在函数开始时计算一次时间
  const thirtyMinutesAgo = new Date(Date.now() - 30 * 60 * 1000);
  const clientIp = (data?.meta as any)?.ip;
  const commentsCount = await db.post.count({
    where: {
      parentId: data.id,
      type: PostType.POST_COMMENT,
    },
  });
  const readed =
    (await db.visit.count({
      where: {
        postId: data.id,
        type: VisitType.READED,
        visitorId: staff?.id,
      },
    })) > 0;
  const liked = await db.visit.count({
    where: {
      postId: data.id,
      type: VisitType?.LIKE,
      ...(staff?.id
        ? // 如果有 staff，查找对应的 visitorId
          { visitorId: staff.id }
        : // 如果没有 staff，查找相同 IP 且 visitorId 为 null 且 30 分钟内的记录
          {
            visitorId: null,
            meta: { path: ['ip'], equals: clientIp },
            updatedAt: {
              gte: thirtyMinutesAgo,
            },
          }),
    },
  });
  const readedCount = await db.visit.count({
    where: {
      postId: data.id,
      type: VisitType.READED,
    },
  });

  Object.assign(data, {
    readed,
    readedCount,
    liked,
    // limitedComments,
    commentsCount,
    // trouble
  });
}

export function getClientIp(req: any): string {
  let ip =
    req.ip ||
    (Array.isArray(req.headers['x-forwarded-for'])
      ? req.headers['x-forwarded-for'][0]
      : req.headers['x-forwarded-for']) ||
    req.socket.remoteAddress;

  // 如果是 IPv4-mapped IPv6 地址，转换为 IPv4
  if (typeof ip === 'string' && ip.startsWith('::ffff:')) {
    ip = ip.substring(7);
  }

  return ip || '';
}
export async function updatePostState(id: string) {
  const post = await db.post.findUnique({
    where: {
      id: id,
    },
    select: {
      id: true,
      state: true,
      receivers: {
        select: {
          id: true,
        },
      },
    },
  });
  if (post?.state === PostState.COMPLETED) {
    return;
  }
  const postReceiverIds = post.receivers
    .map((receiver) => receiver.id)
    .filter(Boolean);
  const receiverViews = await db.visit.count({
    where: {
      postId: id,
      type: VisitType.READED,
      visitorId: {
        in: postReceiverIds,
      },
    },
  });
  if (receiverViews > 0 && post.state === PostState.PENDING) {
    await db.post.update({
      where: { id },
      data: { state: PostState.PROCESSING },
    });
  }
  const receiverComments = await db.post.count({
    where: {
      parentId: id,
      type: PostType.POST_COMMENT,
      authorId: {
        in: postReceiverIds,
      },
    },
  });
  if (receiverComments > 0) {
    await db.post.update({
      where: { id },
      data: { state: PostState.COMPLETED },
    });
  }
}