import {
  Request
} from '@/service/request/index.js'

//格式化日期
//data: 日期对象或时间戳
//format: 格式化字符串，默认"YYYY-MM-DD hh:mm:ss"
export function formatDate(
  data = { date: null, timestamp: null },
  format = "YYYY-MM-DD hh:mm:ss"
) {
  if (!data?.date && !data?.timestamp) {
    return ""
  }
  let date = data?.date
  if (!date) {
    date = data?.timestamp * 1000
  }
  const d = new Date(date);
  const year = d.getFullYear();
  const month = String(d.getMonth() + 1).padStart(2, "0");
  const day = String(d.getDate()).padStart(2, "0");
  const hour = String(d.getHours()).padStart(2, "0");
  const minute = String(d.getMinutes()).padStart(2, "0");
  const second = String(d.getSeconds()).padStart(2, "0");
  return format
    .replace("YYYY", year)
    .replace("MM", month)
    .replace("DD", day)
    .replace("hh", hour)
    .replace("mm", minute)
    .replace("ss", second);
}

//获取唯一id
export function getUid(len = 16) {
  const ts = Date.now().toString(36);
  const rand = Math.random().toString(36).slice(2);
  return (ts + rand).slice(0, len);
}

let permissions = []

//判断是否有某个功能权限
export function hasFunction(key) {
  return new Promise((resolve, reject) => {
    if (permissions.length) {
      resolve(permissions.includes(key))
      return
    }
    Request(
      {
        url: "/v1/api/basic/home/menu?type=3",
        method,
      }
    ).then((res) => {
      permissions = res.data?.permissions || []
      resolve(permissions.includes(key))
    }).catch(err => {
      reject(err)
    })
  })
}

//
/**
 * 分页获取本地数据
 * @param {Object} params
 * @param {number} params.page 当前页码
 * @param {number} params.size 每页条数
 * @param {Array} params.initData 原始数据源
 * @param {Array} params.data 当前已加载数据
 * @returns {Object} { page, data }
 */
export function getPaginatedList({ page = 0, size = 10, initData = [], data = [] }) {
  if (!data) data = [];
  if (
    data.length >= initData.length
  ) {
    return {};
  }
  const _page = (page || 0) + 1;
  const start = (_page - 1) * size;
  const end = Math.min(
    start + size,
    initData?.length || 0
  );
  data = [
    ...data,
    ...(initData?.slice(start, end) || []),
  ];
  return {
    page: _page,
    data
  }
}